Screw press clutch easy to maintain

Abstract

The utility model relates to a screw press clutch easy to maintain, and belongs to the field of screw presses, the screw press clutch easy to maintain comprises a press body, the press body comprises a screw rod, and the screw rod is vertically arranged; the flywheel is coaxially and rotatably connected with the screw rod; the cylinder body is located above the flywheel, a piston plate is arranged in the cylinder body, a sealing cavity is formed between the piston plate and the cylinder body, and the piston plate can move in the axis direction of the screw rod; a placing cavity is formed between the piston plate and the flywheel; the friction disc is located in the containing cavity and connected with the screw. The friction disc is provided with a friction block; the two abutting plates are connected to the sides, opposite to the flywheel, of the piston plate through bolts correspondingly. When the piston plate moves downwards, the friction block tightly abuts against the two abutting plates, so that the flywheel rotates to drive the friction disc and the screw to rotate, and when the piston plate moves upwards, the friction block releases the piston plate and the flywheel. The flywheel has the advantages that the maintenance difficulty caused by abrasion of the flywheel is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of screw presses, and in particular to a screw press clutch that is easy to maintain. Background Art

[0002] A screw press is a forging machine that uses a screw and a nut as a transmission mechanism and transforms the forward and reverse rotation of a flywheel into the up and down reciprocating motion of a slider by means of a screw transmission. During operation, the motor accelerates the flywheel to store energy, and at the same time pushes the slider downward through the screw and the nut. When the slider contacts the workpiece, the flywheel is forced to decelerate to a complete stop, and the stored rotational kinetic energy is transformed into impact energy, which is used to strike the workpiece through the slider to deform it. Due to the large mass and rotational inertia of the flywheel, the flywheel consumes a lot of energy during the start and stop process, and the transmission efficiency is low.

[0003] In the existing clutch screw press, the motor drives the flywheel to rotate, the screw is provided with a friction disc, and the friction disc is provided with a friction block. The flywheel and the friction disc can move synchronously or individually by adjusting the pressure of the clutch cylinder. When the pressure of the clutch cylinder increases, the flywheel and the friction disc rotate synchronously through the friction force of the friction block, and the screw rotates to move the slider downward. After the slider hits the workpiece, the flywheel and the friction disc separate, and both move individually. In the process of increasing the pressure of the clutch cylinder, the friction block first slides relative to the flywheel, and finally the flywheel and the friction disc reach a relatively static state to achieve synchronous rotation.

[0004] Regarding the above-mentioned related technologies, the friction block slides on the flywheel surface, which causes the friction block and the flywheel to wear out quickly. When the flywheel surface is seriously worn, it may affect the normal operation of the screw press. Because the flywheel has a large mass, if the flywheel is replaced, it will increase the difficulty of maintenance and the maintenance cost. Utility Model Content

[0005] In order to reduce the difficulty of maintenance caused by wear and tear and reduce maintenance costs, the present application provides a screw press clutch that is easy to maintain.

[0006] The present application provides an easy-to-maintain screw press clutch that adopts the following technical solution:

[0007] An easy-to-maintain screw press clutch comprises a flywheel, the flywheel coaxially rotating with a connecting screw;

[0008] A cylinder body, the cylinder body is located above the flywheel, a piston plate is arranged inside the cylinder body, a sealed cavity is formed between the piston plate and the cylinder body, the piston plate can move along the axial direction of the screw, and a placement cavity is formed between the piston plate and the flywheel;

[0009] A friction disc, the friction disc is located in the placement cavity, the friction disc is connected to the screw rod; the friction disc is provided with a friction block;

[0010] Two abutment plates, the two abutment plates are respectively bolted to the piston plate and the opposite side of the flywheel;

[0011] When the piston plate moves downward, the friction block is in close contact with the two abutment plates, so that the rotation of the flywheel can drive the friction disk and the screw to rotate. When the piston plate moves upward, the friction block releases the piston plate and the flywheel.

[0012] By adopting the above technical solution, since the mass of the friction disc is smaller than that of the flywheel, and the energy consumption during the start-stop process is small, and the flywheel can continue to rotate in one direction, reducing the energy consumption of the flywheel during startup, it can more effectively utilize energy during use and reduce energy consumption costs. By replacing the abutment plate instead of replacing the flywheel, the maintenance difficulty is reduced and the maintenance cost is reduced.

[0013] Optionally, the flywheel is provided with a movable part, the movable part is detachably connected to the flywheel, and the abutment plate connected to the flywheel is connected to the movable part of the flywheel.

[0014] By adopting the above technical solution, the design of separating the movable part from the bottom of the flywheel makes it more convenient to replace the lower abutment plate, which can reduce the separation of the piston plate and the upper plate, reduce the impact on the sealing of the sealing chamber, and thus extend the service life of the press. When the movable part is separated from the flywheel, the movable part can be separated from the flywheel smoothly with the help of multiple jacks, and the movable part can also be lifted by the jack when installing the flywheel, thereby realizing the installation of the movable part and the flywheel.

[0015] Optionally, the abutment plate connected to the flywheel is divided into a plurality of parts, and the abutment plate can be separated from the screw by separating the plurality of parts of the abutment plate.

[0016] By adopting the above technical solution, the abutment plate located at the movable part is separated from the flywheel following the movable part. By dividing the abutment plate into a plurality of separable parts, the abutment plate can be separated from the screw rod, making replacement of the abutment plate more convenient.

[0017] Optionally, the height of the friction block is greater than the height of the friction disk.

[0018] By adopting the above technical solution, the upper abutment plate squeezes the friction block so that the friction block is closely abutted against the lower abutment plate, thereby achieving the purpose of synchronous rotation of the flywheel and the friction disk. By making the thickness of the friction block greater than the thickness of the friction disk, it is possible to ensure close abutment between the two abutment plates and the friction block, thereby increasing the reliability of the device.

[0019] Optionally, the flywheel is provided with a plurality of air inlet holes and a plurality of air outlet holes, the plurality of air inlet holes and the plurality of air outlet holes are all connected to the placement cavity, and the axes of the plurality of air outlet holes are arranged along the radial direction of the flywheel.

[0020] By adopting the above technical solution, the gas in the placement chamber is thrown out through the air outlet under the action of the rotation of the flywheel, and then the air enters the placement chamber through the air inlet, achieving the effect of gas circulation. The design of heat dissipation through the air outlet and air intake through the air inlet effectively reduces the heat in the placement chamber, reduces the wear between the friction block and the abutment plate, and further improves the stability and durability of the equipment.

[0021] Optionally, a plurality of friction blocks are provided, and the plurality of friction blocks are distributed around the axis of the friction disk, and there is a gap between two adjacent friction blocks.

[0022] By adopting the above technical solution, channels are formed between the friction blocks arranged at intervals. Gas enters from the air inlet, passes through the channels between the multiple friction blocks, takes away the heat of the multiple friction blocks, and discharges the heat from the air outlet, thereby ensuring that the gas in the placement cavity can flow smoothly and improving the heat dissipation efficiency of the friction blocks.

[0023] Optionally, the cylinder body and the flywheel are jointly provided with a plurality of connecting screws, and the plurality of connecting screws are distributed around the axis of the flywheel, and the piston plate extends outward to the positions of the plurality of connecting screws, and the connecting screws pass through the piston plate, and the piston plate slides along the axial direction of the connecting screws; both ends of the connecting screws are locked by nuts.

[0024] By adopting the above technical solution, the connecting screw plays a guiding role, allowing the piston plate to slide along the axis direction of the connecting screw. This design can ensure the stability and accuracy of the piston plate during movement and reduce the friction between the piston plate and the connecting screw.

[0025] Optionally, the piston plate is provided with a plurality of return springs, and the plurality of return springs apply an upward force to the piston plate.

[0026] By adopting the above technical solution, when the pressure decreases, the return spring will reset the piston plate, that is, move it upward. This function is to enable the piston plate to quickly return to its original position during operation, thereby separating from the friction block. The use of the return spring can ensure the normal operation of the system and improve the efficiency and stability of the press.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By replacing the abutment plate instead of the flywheel, the maintenance difficulty and maintenance cost are reduced. This makes maintenance more convenient and economical, and can reduce the downtime and cost caused by maintenance;

[0029] 2. The design of separating the movable part from the lower wheel can reduce the separation of the piston plate and the upper plate when replacing the lower abutment plate, reduce the impact on the sealing performance of the sealing chamber, and thus extend the service life of the press;

[0030] 3. The design of heat dissipation through the air outlet and air intake through the air inlet effectively reduces the heat in the placement cavity, reduces the wear between the friction block and the abutment plate, and further improves the stability and durability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an easy-to-maintain screw press clutch according to an embodiment of the present application.

[0032] Figure 2 It is a cross-sectional view of an easily maintainable screw press clutch according to an embodiment of the present application.

[0033] Figure 3 It is a schematic diagram of the structure of the friction disc of the embodiment of the present application.

[0034] Explanation of the reference numerals: 1. flywheel; 11. movable part; 12. placement chamber; 13. air inlet; 14. air outlet; 2. cylinder body; 21. piston plate; 22. sealing chamber; 3. friction disc; 31. friction block; 4. abutment plate; 5. connecting screw; 51. sleeve; 6. support screw; 61. return spring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-3 This application is described in further detail.

[0036] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0038] The present application embodiment discloses a screw press clutch that is easy to maintain. Figure 1 and Figure 2 A screw press clutch that is easy to maintain includes a flywheel 1, which is coaxially connected to the screw rod and connected to a motor (not shown in the figure) through a belt, and the motor drives the flywheel 1 to rotate through the belt. A cylinder body 2 is coaxially arranged above the flywheel 1, and the cylinder body 2 is rotatably connected to the screw rod. The flywheel 1 is rotatably connected to the screw rod through a bearing group, and a piston plate 21 is slidably arranged at the bottom of the cylinder body 2. The piston plate 21 and the cylinder body 2 are connected through a plurality of sealing rings to form a sealed chamber 22, and the sealed chamber 22 is connected to a pressure gas source, and the pressure gas source controls the inflow and outflow of gas in the sealed chamber 22. An annular placement chamber 12 is formed between the piston plate 21 and the flywheel 1, and a friction disc 3 is coaxially fixed at the position of the screw rod corresponding to the placement chamber 12, and the friction disc 3 is located inside the placement chamber 12. When the gas in the sealed chamber 22 increases, the piston plate 21 moves downward, and when the gas in the sealed chamber 22 decreases, the piston plate 21 moves upward.

[0039] Reference Figure 2 and Figure 3 The friction disc 3 is provided with a plurality of mounting grooves, which are vertically connected to both sides of the friction disc 3. The plurality of mounting grooves are evenly distributed around the axis of the friction disc 3, and the plurality of mounting grooves are not connected. A friction block 31 matching the mounting groove is placed in the mounting groove. The thickness of the friction block 31 is greater than the thickness of the friction disc 3, and there is a gap between two adjacent friction blocks 31. A smooth annular abutment plate 4 is bolted to the position of the friction block 31 on the side opposite to the flywheel 1.

[0040] When the press is working, the motor drives the flywheel 1 to rotate through the belt, the pressure gas source increases the gas in the sealed chamber 22, the piston plate 21 moves down, and the abutment plate 4 connected to the piston plate 21 squeezes the friction block 31 downward, the pressure between the friction block 31 and the two abutment plates 4 increases, the friction force increases, and the friction block 31 starts to drive the friction disc 3 to accelerate until the friction disc 3 and the flywheel 1 rotate synchronously. The friction disc 3 drives the screw to rotate, and the screw pushes the slider to move downward. When the slider hits the workpiece, the pressure gas source reduces the gas in the sealed chamber 22, the piston plate 21 moves up, the pressure between the friction block 31 and the two abutment plates 4 decreases, the friction force decreases, and the flywheel 1 releases the friction disc 3. The screw and the friction disc 3 are forced to slow down to a complete stop under the action of the slider, and the flywheel 1 continues to rotate under the action of inertia. The mass of the friction disc 3 is smaller than that of the flywheel 1, so the energy consumption during the start-stop process is small, and the transmission efficiency is relatively high. At the same time, the friction block 31 slides on the surface of the abutment plate 4 during the acceleration process of the friction disc 3. When the abutment plate 4 is seriously worn, the worker can maintain the normal operation of the screw press by replacing the abutment plate 4. By replacing the abutment plate 4 instead of replacing the flywheel 1, the maintenance difficulty is reduced and the maintenance cost is reduced.

[0041] Reference Figure 2 , after the friction block 31 releases the abutment plates 4 on both sides, the friction block 31 will continue to slide with the abutment plates 4 below under the action of gravity, causing continuous wear on the abutment plates 4 connected to the flywheel 1, so the abutment plates 4 below are worn more seriously. When replacing the abutment plates 4 located below, the cylinder body 2, the piston plate 21 and the friction plate must be disassembled before replacement. Since the sealing cavity 22 between the piston plate 21 and the cylinder body 2 has high requirements for installation accuracy, multiple disassembly may affect the sealing of the sealing cavity 22 and reduce the service life of the press. In order to make it easier to replace the abutment plates 4 below, the flywheel 1 is provided with a stepped movable portion 11, which is connected to the flywheel 1 by bolts. The bolts are connected to the flywheel 1 at the stepped position of the movable portion 11, and the abutment plates 4 connected to the flywheel 1 are connected to the movable portion 11 by bolts. At the same time, the abutment plates 4 connected to the flywheel 1 are evenly divided into multiple parts along the radial direction around their own axis. When the abutment plate 4 connected to the flywheel 1 needs to be replaced, the movable part 11 can be moved downward to separate from the flywheel 1, and then the multiple parts of the abutment plate 4 can be separated, that is, the abutment plate 4 can be separated from the screw. By replacing the abutment plate 4 connected to the flywheel 1 in this way, the separation of the piston plate 21 and the cylinder body 2 can be reduced, making it easier to replace the lower abutment plate 4.

[0042] Reference Figure 2The cylinder body 2 and the flywheel 1 are provided with a plurality of connecting screws 5, which are evenly distributed around the axis of the flywheel 1. The piston plate 21 extends outward to the positions of the plurality of connecting screws 5, and the connecting screws 5 are sequentially passed through the cylinder body 2, the piston plate 21 and the flywheel 1. The connecting bolts are sleeved with supporting sleeves corresponding to the positions of the cylinder body 2 and the piston plate 21, and the two ends of the supporting sleeves are respectively abutted against the surfaces of the cylinder body 2 and the flywheel 1. The piston plate 21 is fixed with a copper sleeve 51 at the position corresponding to the connecting screw 5. The piston plate 21 can slide along the axis direction of the connecting screw 5. The connecting screw 5 guides the sliding of the piston plate 21, and the copper sleeve 51 can reduce the friction between the piston plate 21 and the connecting screw 5 during the sliding process. The cylinder body 2 and the piston plate 21 are also provided with a plurality of support screws 6. A clearance hole (not marked in the figure) is provided at the position of the flywheel 1 corresponding to the support screws 6. The piston plate 21 is provided with a plurality of return springs 61. The plurality of support screws 6 correspond to the plurality of return springs 61 one by one. The plurality of support screws 6 are evenly distributed around the axis of the flywheel 1. The support screws 6 and the connecting screws 5 are distributed at intervals. Both ends of the plurality of connecting screws 5 and the plurality of support screws 6 are locked by nuts. The return spring 61 is arranged coaxially with the support screw 6 in the clearance hole. The return spring 61 is fixedly connected to the end of the support screw 6 away from the cylinder body 2. The return spring 61 applies an upward force to the piston plate 21. When the pressure gas source is deflated, the return spring 61 can copy the piston plate 21 to move upward, thereby separating the upper abutment plate 4 from the friction block 31. A plurality of vertical air inlet holes 13 are provided at the bottom of the flywheel 1. The plurality of air inlet holes 13 are located on the side of the friction block 31 close to the screw and are connected to the placement chamber 12. The flywheel 1 is provided with a plurality of air inlet holes 13 in the circumferential direction. The axes of the plurality of air outlet holes 14 are arranged along the radial direction of the flywheel 1. The plurality of air outlet holes 14 are connected to the placement chamber 12. After the friction block 31 releases the abutment plates 4 on both sides, the friction force will continue to slide with the abutment plates 4 below under the action of gravity, causing continuous wear on the abutment plates 4 connected to the flywheel 1, generating more heat. The hot air in the placement chamber 12 is discharged through the air outlet holes 14 under the action of the high-speed rotation of the flywheel 1, and then drives the outside air to enter from the air inlet holes 13, thereby reducing the heat in the placement chamber 12 and further reducing the wear caused by the friction between the friction block 31 and the abutment plates 4.

[0043] The implementation principle of the screw press clutch which is easy to maintain in the embodiment of the present application is as follows: when the press needs to strike the workpiece, the motor drives the flywheel 1 to rotate through the belt, the pressure gas source increases the gas in the sealing chamber 22, the piston plate 21 moves downward under the guidance of the connecting screw 5, the upper abutment plate 4 presses the friction block 31 downward, the pressure between the friction block 31 and the two abutment plates 4 increases, the friction force increases, the friction block 31 starts to drive the friction disc 3 to accelerate, until the friction disc 3 rotates synchronously with the flywheel 1, the friction disc 3 drives the screw to rotate, and the screw pushes the slider to move downward. When the slider strikes the workpiece, the pressure gas source reduces the gas in the sealing chamber 22, the piston plate 21 moves upward under the action of the reset spring 61, the pressure between the friction block 31 and the two abutment plates 4 decreases, the friction force decreases, the flywheel 1 releases the friction disc 3, the screw and the friction disc 3 are forced to decelerate to a complete stop under the action of the slider, and the flywheel 1 continues to rotate under the action of inertia. At this time, the friction block 31 continuously slides and rubs with the lower abutment plate 4 under the action of gravity, generating a lot of heat. The hot air in the placement chamber 12 is discharged through the air outlet 14 under the action of the high-speed rotation of the flywheel 1, and then drives the outside air to enter from the air inlet 13, thereby reducing the heat in the placement chamber 12. When it is necessary to replace the lower abutment plate 4, the movable part 11 can be separated from the flywheel 1 with the help of a jack, and then the multiple parts of the abutment plate 4 can be separated, that is, the abutment plate 4 can be separated from the screw rod, so that the abutment plate 4 can be replaced.

[0044] The embodiment of the present application has the effect of reducing the difficulty of repairing the flywheel 1 due to wear and tear, and reducing the repair cost.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An easy-to-maintain screw press clutch, characterized in that ,include: A flywheel (1), the flywheel (1) being coaxially rotatably connected to the screw; A cylinder body (2), the cylinder body (2) being located above the flywheel (1), a piston plate (21) being arranged inside the cylinder body (2), a sealed cavity (22) being formed between the piston plate (21) and the cylinder body (2), the piston plate (21) being able to move along the axial direction of the screw; and a placement cavity (12) being formed between the piston plate (21) and the flywheel (1); A friction disc (3), the friction disc (3) being located in the placement cavity (12), the friction disc (3) being connected to the screw; the friction disc (3) being provided with a friction block (31); Two abutment plates (4), the two abutment plates (4) being respectively bolted to the piston plate (21) and the opposite side of the flywheel (1); When the piston plate (21) moves downward, the friction block (31) is in close contact with the two abutment plates (4), so that the rotation of the flywheel (1) can drive the friction disk (3) and the screw to rotate; when the piston plate (21) moves upward, the friction block (31) releases the piston plate (21) and the flywheel (1).

2. The easy-to-maintain screw press clutch according to claim 1, characterized in that: The flywheel (1) is provided with a movable part (11), the movable part (11) is detachably connected to the flywheel (1), and the abutment plate (4) connected to the flywheel (1) is connected to the movable part (11) of the flywheel (1).

3. The easy-to-maintain screw press clutch according to claim 2, characterized in that: The abutment plate (4) connected to the flywheel (1) is divided into a plurality of parts, and the abutment plate (4) can be separated from the screw by separating the plurality of parts of the abutment plate (4).

4. The easy-to-maintain screw press clutch according to claim 1, characterized in that: The height of the friction block (31) is greater than the height of the friction disk (3).

5. The easy-to-maintain screw press clutch according to claim 1, characterized in that: The flywheel (1) is provided with a plurality of air inlet holes (13) and a plurality of air outlet holes (14), the plurality of air inlet holes (13) and the plurality of air outlet holes (14) are all connected to the placement cavity (12), and the axes of the plurality of air outlet holes (14) are arranged along the radial direction of the flywheel (1).

6. The easy-to-maintain screw press clutch according to claim 5, characterized in that: A plurality of the friction blocks (31) are provided, and the plurality of friction blocks (31) are distributed around the axis of the friction disk (3), with a gap between two adjacent friction blocks (31).

7. The easy-to-maintain screw press clutch according to claim 1, characterized in that: The cylinder body (2) and the flywheel (1) are jointly provided with a plurality of connecting screws (5), the plurality of connecting screws (5) are distributed around the axis of the flywheel (1), the piston plate (21) extends outward to the positions of the plurality of connecting screws (5), the connecting screws (5) pass through the piston plate (21), and the piston plate (21) slides along the axis direction of the connecting screws (5); the two ends of the connecting screws (5) are locked by nuts.

8. The easy-to-maintain screw press clutch according to claim 7, characterized in that: The piston plate (21) is provided with a plurality of return springs (61), and the plurality of return springs (61) exert an upward force on the piston plate (21).

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