Keywords: Hydraulic Press
+86 188 1880 9064
Request a quote

As auxiliary equipment for weightlifting exercises, dumbbells are popular among fitness enthusiasts because of their advantages of portability and easy storage. The processing of dumbbell blocks generally requires special hydraulic press equipment. Shuntec Press has designed and produced a dumbbell block powder forming hydraulic press, which adopts a four-beam and four-column structure. With the cooperation of the mold, one-time pressing and forming of the dumbbell counterweight can be realized. The hydraulic press is equipped with a servo-hydraulic system, which has a high degree of automation, high productivity, power saving, and durability.

There is more than one production process for dumbbell blocks, and the more commonly used ones include casting and powder molding. In recent years, with the improvement of the technology level and the reduction of cost, the powder molding process has increasingly become the first choice for dumbbell block manufacturers. Dumbbell block powder forming hydraulic press is cost-effective production equipment specially designed for customers. It can press the dumbbell counterweight by cold pressing first and then hot pressing, or directly hot press iron powder. The key lies in the right pressure and matching mold.

Dumbbell block powder molding process

  1. Preparation of raw material powder. It can be pure metal or its alloys, non-metals, compounds of metals and non-metals, and various other compounds.
  2. Put the mixture into the mold, start the dumbbell block powder forming hydraulic press to press down, and make the dumbbell counterweight block of the desired shape.
  3. Heat the pressed dumbbell counterweight blank, and after reaching the required temperature, put it on the dumbbell block powder forming hydraulic press for secondary pressure to achieve the required density. It is also possible to directly use iron powder to cold-press the dumbbells or directly heat the iron powder and put it on a hydraulic press for one-time hot-pressing.
  4. Under the action of the ejector cylinder, the pressed dumbbell counterweight is ejected out of the mold and sent to the safe area by the pushing mechanism.

According to the material, specification, density, weight, etc. of the dumbbell counterweight, Shuntec Press can produce 315 tons, 400 tons, 500 tons, 630 tons, 800 tons, 1000 tons, 1500 tons, and other different tonnages of dumbbell block powder forming hydraulic press for customers. The forming hydraulic press can press all kinds of metal, non-metal, ceramic, and refractory products. It can be floating and pressed during processing. The two cylinders can simultaneously press in both directions. The dumbbell counterweight can be uniformly pressed in both directions with uniform density.

This dumbbell block powder forming hydraulic press designed and produced by Shuntec Press is not only used for pressing dumbbell block products but also suitable for pressing and forming various counterweight blocks, such as elevator counterweight blocks, mining machinery counterweight blocks, etc. The equipment is equipped with a servo numerical control system, which is energy-saving, low-noise, small in size, prevents oil from heating, adjustable in speed, and adjustable in pressure.

Refractory bricks are made of refractory materials, sand, fly ash, stone powder, gravel, construction waste, cement, etc. Shuntec Press has designed and produced a refractory brick powder hydraulic press, with a three-beam and four-column structure or four-beam four-column structure, which can process various silica bricks, high alumina bricks, magnesia calcium bricks, magnesia carbon bricks, magnesia bricks, and other refractory bricks with molds. Refractory bricks are widely used in high-temperature industries such as iron and steel smelting, building materials, non-ferrous metals, and chemicals.

The processing of refractory bricks is generally carried out through the cooperation of the pressure of the refractory brick powder forming hydraulic press and the mold. The specific parameters of the press can be based on customer requirements, such as tonnage, stroke, daylight, bed table size, and processing speed. It can be adjusted in ways such as the number of extra bricks in one mold.

According to the material, specification, density, etc. of refractory bricks, Shuntec Press can design and build 630 tons, 800 tons, 1200 tons, 1500 tons, 2000 tons, and other different tonnages of refractory brick powder compacting hydraulic presses for customers. Cooperating with automatic supporting devices such as automatic feeding devices, brick push-out devices, transfer devices, etc., we can realize the fully automatic operation of refractory brick production.

The refractory brick powder molding process

  1. Raw material crushing: The refractory material is then fed into the crusher and filtered through the screen. The raw materials with a particle size larger than 3mm need to enter the mill to be ground into a fine powder and transported to the silo.
  2. Kneading: The refractory materials are weighed according to the scientific ratio, and then added to the wheel mill to mix evenly, statically mixed for 15 minutes, and there must be no mud and dry materials in the mixing material.
  3. Forming: The mixed material is sent to the hopper through the transmission belt, and the quantitative mixture is sent into the mold after weighing, and after being rapidly pressed and formed by the refractory brick powder forming hydraulic press, it is sent to the brick output belt, and then palletized to the kiln car by the automatic palletizing machine.
  4. Sintering in the kiln: The stacked kiln car is sent into the kiln by the tractor, and after high-temperature sintering, high-temperature resistant bricks can be realized.

The refractory brick powder hydraulic press generally adopts a vertical four-column, two-way pressurizing structure, driven directly by the oil pump. It can realize two-way equal-quantity pressing, low and high-pressure multiple pressurizations, and stable pressure forming, and is equipped with a volume feeding device, product clamping and conveying device, and automatic adjustment device for brick thickness, which can meet various requirements of refractory material forming process. Loading-forming-bricking, the entire production process is fully automated.

The transmission shaft fork is an important part of the vehicle power system, which is used to transmit the driving force of the vehicle operation. The performance of the drive shaft fork directly affects the safety of the car, and it is difficult to meet the strength requirements of conventional processing methods. Shuntec Press has designed and built a multi-directional forging hydraulic press for the drive shaft fork. It adopts the three-beam four-column structure or the gib-guided frame structure. Using the forging process, the processed drive shaft fork has good mechanical properties, wear resistance, and long service life.

The multi-directional forging of the transmission shaft fork is performed by the upper die of the universal joint fork installed on the slider of the hydraulic press. Under the vertical downward power of the equipment, pressure is applied to the heated round blank which is placed on the lower die of the universal joint fork installed on the workbench. And then, the universal joint fork blank is obtained.

According to the material, specification, and process of the transmission shaft fork, Shuntec can customize the production of 400 tons, 500 tons, 630 tons, 800 tons, 1000 tons, 1500 tons, 2000 tons, and other tonnages of the forging hydraulic press. Forging times per minute can reach 80 to 120 times. The movements of hydraulic system components are sensitive and fast. The hydraulic press controls the pressing amount and stroke of the movable beam through the computer. Under the precision-controlled forging process, the dimensional accuracy of the produced blank can reach ±1~2mm.

By using the multi-directional forging hydraulic press, the material or blanks need to be heated before forging, which can improve the plasticity of the metal and reduce the deformation resistance. That is, to totally increase the plasticity of the metal so that the metal is easy to flow and form and to obtain a good structure and mechanical properties after forging. The forging temperature range of a metal refers to a temperature range between the starting forging temperature and the metal forging temperature. The principle of determining the forging temperature is to ensure that the metal has high plasticity and small deformation resistance within the forging temperature range.

Plastic building formwork is one of the most popular formwork products in recent years. Compared with building formwork of other materials, plastic building formwork has the advantages of heat and cold resistance, anti-aging, high finish, and can be used repeatedly. The plastic building formwork is mainly made of polypropylene plastic, and its production and processing mostly adopt the hot compression molding process. Shuntec Press has designed and produced a compression molding hydraulic press for molding plastic building formwork. It has the tie-rod structure of a three-beam four-column. With different molds, it can realize one-time molding of plastic building shells of different specifications.

According to the material, specification, thickness, process, etc. of the plastic building formwork, Shuntec Press can design and produce 600 tons, 800 tons, 1000 tons, 1250 tons, 1500 tons, 2000 tons, and other tonnages of plastic building formwork compression molding press for customers. The required pressure, working bed, cylinder stroke, process action, etc. can be customized on demand. The equipment is also featured in high efficiency and high speed. It is ideal production equipment for building plastic mold formwork.

Process Flow of Plastic Building Formwork Compression Molding Press

  1. Preheating and pressing: preheating plastic powder, particles, and fibers. Pre-pressing is to press the loose raw materials into plastic blanks of certain quality and shape, in order to facilitate putting into the mold.
  2. Feeding: Put the pressed plastic raw material into the open mold.
  3. Mold clamping: close the mold, and at the same time, the plastic building shell compression molding hydraulic press heats and pressurizes, so that the plastic melts and fills the cavity.
  4. Ejection: After the plastic parts are hardened and formed, the plastic parts are released.

Plastic building formwork molding is a kind of composite material compression molding. The powdered, granular, or fibrous plastic is first put into the forming mold, and then the mold is closed and pressed to form and solidify. It can also be used for compression molding of thermosetting plastics, thermoplastics, and rubber materials.

The plastic building formwork compression molding hydraulic press designed and produced by Shuntec adopts the pressure design of three stages of pre-compression, molding, and pressure holding, and can set the time segmented pressure for scientific distribution, which makes the energy efficiency of the equipment more significant. High precision PLC control, simple and fast mold replacement, high molding pressure, short production cycle, and high production efficiency. It is a safe and reliable molding hydraulic press.

Hydraulic press machines are widely used in the manufacturing industry, but hydraulic presses need maintenance throughout their serving life. Let me share with you the five main points for simple hydraulic press machine maintenance.

1. The oil liquid level of the oil tank should always be kept high enough to ensure that the oil in the system has sufficient circulating cooling conditions. Also, We should pay attention to keeping the oil tank and oil pipes clean to facilitate heat dissipation. Generally, the safe operating temperature of the hydraulic press is 30℃-55℃, which is the most suitable temperature for use. With this temperature range, the hydraulic press machines could have the highest performance and the longest-serving life.

2. Hydraulic oil is the energy transfer medium when the hydraulic station is working. The quality, cleanliness, and viscosity of the hydraulic oil play a leading role throughout the serving life of the hydraulic pump, hydraulic valve, and hydraulic cylinder. Therefore, the quality of the hydraulic oil should be paid great attention to when using the hydraulic station. We should keep the hydraulic oil clean. The oil used in the hydraulic system must be strictly filtered, and the oil filter should be a must configuration in the hydraulic system.

3. The hydraulic oil must be replaced each year, and the first replacement time should not exceed three months; in order to ensure the reliable operation of the press, some components of the press are recommended to be replaced after the service life cycle is reached.

4. The sliding block should be filled with lubricating oil frequently, and the exposed surface of the columns should be kept clean and lubricated frequently. In order to prevent dust and water from falling into the oil, the area around the oil tank should be kept clean and regular cleaning should be carried out.

5. The working pressure output is adjustable by the pressure regulating valve. Under normal circumstances, the set pressure cannot exceed its original design rated pressure. Otherwise, it may cause damage to the hydraulic pump, hydraulic valves, and hydraulic cylinders. 

A servo-hydraulic press is the servo motor-driven hydraulic press integrated with the precision pressure and position transducer for closed-loop control. The servo-hydraulic press uses the servo motor to replace the ordinary transmission motor. The motion curve of the press slider can be set according to the process requirements. Also, the pressure, stroke, and speed are freely adjustable on HMI. Thus, the servo-hydraulic press is widely used for high-precision molding processes, and for difficult-to-form materials and parts with complex shapes. It greatly improves the processing accuracy and the yield of the products, at the same time, it is more energy saving.

Servo-hydraulic press machine benefits

Compared with traditional hydraulic presses, the benefits of servo-hydraulic presses are obvious in the following points: 

    1. Universality, flexibility, and high level of intelligence

Due to its servo function, the slider movement curve is no longer just a sine curve but could be adjusted according to the process requirements. 

    2. High accuracy

Due to the advanced linear position transducer and pressure transducer, the motion of the slider could be precisely controlled and monitored. The position control accuracy is high level, especially near the position of the bottom dead center, the accuracy of the slider position can be guaranteed within ±0.01mm. The pressure control accuracy could be ensured within 1%. In this way, each punch of the servo-hydraulic press is highly stable during the production process. With a servo-hydraulic press, we could maintain production consistency and prevent the generation of defective products.

    3. High productivity  

The servo-hydraulic press retains the advantages of the crank press, the productivity is much higher than the conventional hydraulic press. During a working cycle, there is no need to complete a 360-degree rotation for the servo motor, and only need to swing at a certain angle to complete the punching cycle, which further shortens the cycle time. It minimizes unnecessary travel of the slider and greatly improves productivity.

The 1000 ton carbon fiber thermoforming servo hydraulic press is equipped with a servo-hydraulic system, which has the advantages of high efficiency, energy-saving, and environmental protection. In addition, Shuntec can custom build the carbon fiber thermoforming press with the required heated platen temperature, cramping movement speed, pressure cramping, and burp cycle managing. The Shuntec compression molding press is a highly customized manufacturing solution specifically for molding SMC and BMC.

Carbon fiber is made of natural fiber or man-made fiber processed or carbonized under certain conditions. If it is used to make composite materials, the carbon fiber has to undergo a series of surface treatments. Carbon fiber composite materials include carbon fiber/resin, carbon fiber/metal, carbon fiber/carbon, and other products. Among them, carbon fiber reinforced resin composite materials are most widely used in many industries and applications. The specific strength of glass fiber is similar to that of carbon fiber, but the specific stiffness is much lower. Obviously, carbon fiber/resin has superior performance to FRP. Carbon fiber composite materials are usually hot molded by the composite material hydraulic press. It can be one-time molded, with high efficiency and fast speed. The carbon fiber thermoforming machines are currently the ideal equipment for producing carbon fiber composite materials.

The 1000-ton carbon fiber hot forming hydraulic press with servo hydraulic system possesses obvious advantages over the conventional hydraulic press;

   1. The conventional carbon fiber thermoforming hydraulic press is designed for simpreciprocating motion; The servo hydraulic carbon fiber thermoforming press is designed with precision control. It pays more attention to dynamic performance, and it can be used in the application with complicated forming processes; 

   2. Friction force should be considered for the servo cylinder. In the servo hydraulic system, it affects the dynamic response, control accuracy, stability, etc. of the system. In the design of the servo-hydraulic cylinder, seals with a low friction coefficient should be selected, and the moving surface should be more precise than the conventional ones.

   3. Servo hydraulic cylinder is the actuator in the servo-hydraulic system or proportional system. It realizes the direction, position, speed, or deformation of the object by applying controllable pushing, pulling, pressing, torsion, and other forces to an object. In order to simplify the mechanism when designing the entire control system, the signal detection and feedback device servo valve or proportional valve, etc. are often directly installed on the servo hydraulic cylinder.

Carbon fiber composite material is an important reinforcement material in advanced composite materials. It is widely used in the field of the defense industry. It is an indispensable strategy for advanced equipment such as military aircraft, unmanned aerial vehicles, military cabinets, rockets, missiles, satellites, ships, etc. The Shuntec four-column carbon fiber composite material thermoforming press and gib-guide frame type composite carbon fiber thermoforming press are two structures for customers to choose from.

When we talk about the servo hydraulic press, we are talking about a series of hydraulic presses driven by the servo motor instead of the ordinary motor. As thus, a hydraulic press with a servo motor-driven system can also be called a servo press. Currently, in China, the servo-hydraulic presses are mainly small-tonnage presses. In order to break through the limitation of the servo motor, the hybrid drive mode is a direction of the servo press development.

Shuntec Press is a professional and leading servo-hydraulic press manufacturer in China for years. With years of engineering and manufacturing experience across dozens of industries and applications, we are confident to build every press to your specifications.

The main features of the servo hydraulic press are:

1. High level of versatility, flexibility, and intelligence.

    The slider motion curve of the servo hydraulic machine is no longer just a sine curve, but an arbitrary curve that can be optimized and designed according to process requirements.

2. High precision

    Because the linear position sensors are used to detect the position of the slider, the slider has motion control accuracy throughout the entire process, especially near the bottom dead center, which can ensure that the accuracy of the slider varies within ±0.01mm; The precision in the production process is stable, and the appearance of product burrs is suppressed to prevent the production of defective products.

3. High productivity

    As the servo-hydraulic press retains the advantages of the crank press, the productivity is much higher than that of the ordinary hydraulic press. It can also adjust the stroke of the slider according to the difference in the workpiece. It does not need to complete a 360-degree rotation in one cycle, but only performs a certain angle of the swing. It minimizes unnecessary trips and greatly improves productivity. This helps to further shorten the overall cycle time. 

The servo-hydraulic press is an energy-saving hydraulic press that uses a servo motor to drive the main oil pump, reduces the control valve loop, and precisely controls the slider of the hydraulic press. The hydraulic servo system has unique advantages such as fast speed, large load, and large power. The press is widely used in assembly applications.

Compared with the traditional hydraulic assembly press, the advantages of the servo hydraulic assembly press are obvious:

1. Numerical input for press-in depth, pressure-holding time, and pressure can be easily adjusted via the HMI. The operation is very quick and simple.

2. When the servo-hydraulic press is press-fitting, the entire process of pressure and displacement can be displayed on the HMI. The entire process of assembling can be managed and monitored online. The function of real-time quality detection can also help to judge whether the product is qualified or not, and can remove the inferior-quality assembled product in time. 

3. Its external end is connected to the computer, and the processing data can be stored in the computer. This helps to ensure the traceability of the data and facilities management.

Servo Electric Press Advantages

1)Real-time monitoring and real-time control. The servo-electric press adopts a modular design, a closed-loop control system, which can ensure 100% quality throughout the assembly process. It can achieve and output the curve of force and displacement monitor, force and time monitor, with press control, displacement control, and rate control.

2)High accuracy. With a servo electric press, the press-fitting precision is less than 1%, and part precision is ±0.01 mm.

3)Discrimination and traceability. Instantly collect data and output force and displacement curve diagrams, configure a size identification dialog box, and automatically identify the pressing results.

4)Easy to use and easy to integrate. The Shuntec servo press is equipped with a 12-inch industrial touch screen, easy integration, and convenient data setting and saving.

5)Strong rigidity. The servo press is suitable for press-fitting work.

6)Safety, energy-saving, and environmental protection. The electric servo press is 70% more environmentally friendly and energy-saving than the conventional hydraulic press, and 90% more environmentally friendly and energy-saving than the pneumatic power source machines. The maintenance is low-cost, and the product cost can be further reduced.

linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram