Connecting structure of clutch of screw press

Abstract

The utility model relates to a connecting structure of a clutch of a screw press, and belongs to the field of screw presses. The friction disc and the screw rod are coaxially arranged, the friction disc and the screw rod are jointly provided with at least one connecting pin, the friction disc and the screw rod can synchronously rotate under the action of the connecting pin, and the screw rod can slide in the vertical direction relative to the friction disc; an annular clamping groove is formed in the position, corresponding to the upper portion of the friction disc, of the screw, and a pressing plate is clamped in the clamping groove, can abut against the upper surface of the friction disc and slides along with the screw. The screw rod has the effects that the influence of the counter impact force of the screw rod on the friction disc is reduced, and the stability of the friction disc is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of screw presses, and in particular to a connection structure of a screw press clutch. Background Art

[0002] A screw press is a forging machine that uses a screw and a nut as a transmission mechanism and relies on screw transmission to convert the forward and reverse rotational motion of the flywheel into the up and down reciprocating motion of the slider.

[0003] In the existing clutch screw press, the motor drives the flywheel to rotate, and the screw is provided with a friction disc. The friction disc is connected to the flywheel through a tapered roller bearing, and the friction between the flywheel and the friction disc is adjusted to achieve synchronous movement or separate movement of the flywheel and the friction disc. Generally, the screw press is large in size, and the one-piece design is not conducive to processing, manufacturing, installation and transportation. The screw and friction disc of the screw press often adopt a split design, and the screw and the friction disc are fixed by connecting the pressure plate to the screw and the friction disc at the same time. The pressure plate and the friction disc are fixed by bolts, and the pressure plate is connected to the step surface of the screw to achieve the fixation of the screw and the friction disc.

[0004] Regarding the above-mentioned related technologies, when the slider hits the workpiece, due to the interaction of forces, the screw will be subjected to a recoil impact and move upward under the action of the recoil impact. Due to the fixed connection between the screw and the friction disk, the recoil force of the screw will be transmitted to the friction disk through the pressure plate, thereby reducing the stability and accuracy of the friction disk, which may damage the friction disk and reduce the life of the friction disk. Utility Model Content

[0005] In order to reduce the influence of the counter-impact force of the screw on the friction disk and ensure the stability of the friction disk, the present application provides a connection structure of a screw press clutch.

[0006] The present application provides a connection structure of a screw press clutch adopts the following technical solution:

[0007] A connection structure of a screw press clutch comprises a screw rod, which is arranged vertically; a friction plate, which is arranged coaxially with the screw rod, and the friction plate and the screw rod are jointly provided with at least one connecting pin, the friction plate and the screw rod can rotate synchronously under the action of the connecting pin, and the screw rod can slide in the vertical direction relative to the friction plate; the screw rod is provided with an annular groove at a position corresponding to the upper part of the friction plate, a pressure plate is clamped in the groove, the pressure plate can abut against the upper surface of the friction plate, and the pressure plate slides with the screw rod.

[0008] By adopting the above technical solution, when the slider hits the workpiece, due to the interaction of forces, the screw will be subjected to a counter-impact, and the pressure plate will be driven up under the action of the counter-impact. At this time, the pressure plate is separated from the friction disk, and the counter-impact force received by the screw will not be transmitted to the friction disk through the pressure plate, thereby ensuring the stability of the friction disk.

[0009] Optionally, the outer circumference of the screw is provided with a first connecting groove at a position corresponding to the friction disk, and the inner circumference of the friction disk is provided with a second connecting groove at a position corresponding to the first connecting groove. Each of the connecting pins is transitionally matched with the first connecting groove and the second connecting groove at the same time, and the first connecting groove and the second connecting groove are both vertically arranged.

[0010] By adopting the above technical solution, through the connection between the connecting pin and the first connecting groove and the second connecting groove, high-precision synchronous rotation between the screw and the friction disk can be achieved, ensuring the operating stability and accuracy of the mechanical system. This connection method can withstand large torque and ensure the stability and reliability of the connection. At the same time, the connection structure of the pin and the groove is relatively simple and easy to design and process.

[0011] Optionally, a plurality of adjustment pads are arranged between the pressure plate and the friction disk.

[0012] By adopting the above technical solution, the height adjustment of the screw can be achieved by adjusting the number of adjusting pads. During the installation of the screw press, there may be errors in the assembly of the parts, and there may also be tolerances in the processing of the parts, resulting in a certain deviation in the height of the screw after assembly. In this case, the number of adjusting pads can be adjusted to adjust the height of the screw, thereby ensuring the accuracy of the press.

[0013] Optionally, the pressing plate is divided into a plurality of parts, and the pressing plate can be separated from the screw by separating the plurality of parts of the pressing plate.

[0014] By adopting the above technical solution, the pressing plate can be easily disconnected from the screw slot by disassembling multiple parts of the pressing plate, thereby facilitating subsequent maintenance and replacement work. At the same time, the pressing plate can be separated from the screw and the friction disk, making the disassembly and maintenance of the press machine more convenient.

[0015] Optionally, the pressing plate can completely cover the cross-sections of the first connecting groove and the second connecting groove.

[0016] By adopting the above technical solution, the setting of the pressure plate can prevent the connecting pin from separating from the first connecting groove and the second connecting groove. During the operation of the press, the slider hits the workpiece multiple times, and the connecting pin may move upward in the first connecting groove and the second connecting groove due to the impact force, or even separate from the first connecting groove and the second connecting groove, thereby reducing the connection strength between the friction disk and the screw. The setting of the pressure plate ensures the stability of the connection structure.

[0017] Optionally, the first connecting groove and the second connecting groove are both semicircular grooves with equal diameters, and the connecting pin is a cylindrical pin.

[0018] By adopting the above technical solution, semicircular grooves are easier to process than square grooves, because the tool path of semicircular grooves is continuous, which is easier to achieve high-speed processing and smooth feeding compared to the straight lines and corners of square grooves. In addition, the cutting force distribution of semicircular grooves is more uniform, which can reduce cutting vibration and improve processing accuracy. At the same time, the processing of cylindrical pins is relatively easier, and it is easier to achieve high-precision processing, thereby ensuring the connection accuracy of the friction disk and the screw.

[0019] Optionally, a connecting cover is coaxially arranged above the friction disk, the inner wall of the connecting cover abuts against the outer circumference of the pressure plate, and a gap is reserved between the inner wall of the connecting cover and the upper surface of the pressure plate.

[0020] By adopting the above technical solution, the connecting cover limits the maximum upward movement of the screw and the pressing plate, preventing the screw from accidentally moving upward and damaging other parts. On the other hand, the connecting cover restricts the pressing plate in the slot to prevent the pressing plate from loosening and moving. The gap between the connecting cover and the pressing plate provides space for the movement of the pressing plate and the screw.

[0021] Optionally, the connecting cover is bolted to the friction disc.

[0022] By adopting the above technical solution, compared with the one-piece processing process, the processing technology required for the parts to be processed separately and then connected by bolts is relatively simple. Relatively speaking, one-piece processing may require the use of more complex processes and equipment. At the same time, bolt connection can easily disassemble and replace one of the parts, making maintenance and care easier.

[0023] Optionally, a plurality of mounting grooves are provided on the annular surface of the bottom of the friction disc that matches the upper surface of the bearing, and a disc spring and an elastic pad are installed in each of the mounting grooves. The pad is located below the disc spring and abuts against the upper surface of the bearing, and the pad can slide along the length direction of the mounting groove. The pad is provided with an adjusting bolt, which passes through the pad and the disc spring, and is threadedly connected to the friction disc, and the adjusting bolt does not contact the upper surface of the bearing.

[0024] By adopting the above technical solution, when the press machine strikes the workpiece, the friction disc may move upward under the action of the counter-impact force. When the friction disc moves upward, the disc spring stretches, and the pad remains motionless under the elastic force of the disc spring, and continues to abut against the bearing surface. When the friction disc falls back, the pad always remains motionless, the friction disc squeezes the disc spring, and the disc spring is compressed while giving the friction disc an upward elastic force, which reduces the impact force between the friction disc and the bearing when it falls back, reduces the rigid impact of the friction disc on the bearing, reduces the operating noise, and thus increases the service life of the rolling bearing and the friction disc.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When the slider hits the workpiece, due to the interaction of forces, the screw will be subjected to a counter-impact, and the screw drives the pressure plate to move up under the action of the counter-impact. At this time, the pressure plate is separated from the friction plate, and the counter-impact force on the screw will not be transmitted to the friction plate through the pressure plate, thereby reducing the impact of the counter-impact force of the screw on the friction plate and ensuring the stability of the friction plate;

[0027] 2. The pressure plate can prevent the connection pin from being separated from the first connection groove and the second connection groove, and prevent the connection pin from slipping out of the first connection groove and the second connection groove due to impact force during the operation of the press, thereby ensuring the connection stability between the friction disc and the screw;

[0028] 3. The setting of disc spring and pad can play a role of buffering and preventing swing when the press hits the workpiece, avoid the rigid impact of the friction disc on the bearing, reduce operating noise, and increase the service life of the rolling bearing and friction disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a cross-sectional view of a connection structure of a screw press clutch according to an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the structure of the screw rod of the embodiment of the present application.

[0031] Figure 3 It is a schematic diagram of the structure of the friction disc of the embodiment of the present application.

[0032] Figure 4 yes Figure 1 Enlarged view of part A.

[0033] Figure 5 yes Figure 1 Enlarged view of part B.

[0034] Explanation of the accompanying drawings: 1. flywheel; 11. bearing; 2. screw; 21. slot; 22. first connecting slot; 3. friction plate; 31. second connecting slot; 4. connecting pin; 5. pressure plate; 6. adjusting pad; 7. connecting cover; 8. mounting slot; 81. disc spring; 82. pad; 83. adjusting bolt. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 This application is described in further detail.

[0036] The present application embodiment discloses a connection structure of a screw press clutch. Figure 1 A connection structure of a screw press clutch includes a vertically arranged screw rod 2, a friction disc 3 is coaxially arranged on the screw rod 2, and the bottom of the friction disc 3 is connected to the flywheel 1 through a tapered roller bearing 11.

[0037] Reference Figure 2 and Figure 3 A plurality of vertical first connecting grooves 22 are provided on the outer circumference of the screw 2 at positions corresponding to the friction disc 3. The first connecting grooves 22 are connected to the upper end of the screw 2, and the plurality of first connecting grooves 22 are distributed in an array around the axis of the screw 2. A second connecting groove 31 is provided on the inner circumference of the friction disc 3 at positions corresponding to the first connecting grooves 22. Both the first connecting grooves 22 and the second connecting grooves 31 are semicircular grooves with equal diameters.

[0038] Reference Figure 1 Each first connection groove 22 and the second connection groove 31 are provided with a connection pin 4, which is a cylindrical pin, and each connection pin 4 is transitionally matched with the first connection groove 22 and the second connection groove 31. The friction disc 3 and the screw rod 2 can rotate synchronously under the joint action of the connection pin 4, the first connection groove 22 and the second connection groove 31, and the screw rod 2 can slide vertically relative to the friction disc 3.

[0039] Reference Figure 2 and Figure 4 An annular groove 21 is provided at the position above the screw rod 2 corresponding to the friction disc 3, and an annular pressure plate 5 is provided in the groove 21. The pressure plate 5 can slide along with the screw rod 2 and can abut against the upper surface of the friction disc 3. When the pressure plate 5 abuts against the upper surface of the friction disc 3, the pressure plate 5 completely covers the cross-section of the first connecting groove 22 and the second connecting groove 31.

[0040] The friction disc 3 and the screw 2 are connected by the connecting pin 4, so that the high-precision synchronous rotation between the screw 2 and the friction disc 3 is realized, and the running stability and precision of the mechanical system are ensured. At the same time, the semicircular groove and the cylindrical pin are easier to realize high-speed processing, which can reduce cutting vibration and improve processing precision. During the operation of the press machine, the slider hits the workpiece many times, and the connecting pin 4 may move upward in the first connecting groove 22 and the second connecting groove 31 due to the impact force, or even separate from the first connecting groove 22 and the second connecting groove 31, reducing the connection strength between the friction disc 3 and the screw 2. The setting of the pressing plate 5 can prevent the connecting pin 4 from separating from the first connecting groove 22 and the second connecting groove 31. At the same time, the pressing plate 5 is divided into multiple parts, so that the pressing plate 5 can be easily disconnected from the card slot 21 of the screw 2, thereby facilitating subsequent maintenance and replacement work. When the slider hits the workpiece, due to the interaction of forces, the screw 2 will be subjected to a counter-impact, and the pressing plate 5 will be driven to move upward under the action of the counter-impact. At this time, the pressing plate 5 is separated from the friction disc 3, and the counter-impact force received by the screw 2 will not be transmitted to the friction disc 3 through the pressing plate 5, thereby ensuring the stability of the friction disc 3.

[0041] Reference Figure 4 , a number of adjustment pads 6 are arranged between the pressure plate 5 and the friction disc 3. By adjusting the number of the adjustment pads 6, the height adjustment of the screw rod 2 can be achieved, thereby compensating for the assembly error and the parts processing tolerance problem. The coaxial bolt above the friction disc 3 is provided with a connecting cover 7. The inner wall of the connecting cover 7 abuts against the outer circumference of the pressure plate 5, and a gap is reserved between the inner wall of the connecting cover 7 and the upper surface of the pressure plate 5. On the one hand, the connecting cover 7 limits the maximum upward movement of the screw rod 2 and the pressure plate 5 to prevent the screw rod 2 from accidentally moving upward and damaging other parts. On the other hand, the connecting cover 7 limits the pressure plate 5 in the slot 21 to prevent the pressure plate 5 from loosening and displacement. The gap between the connecting cover 7 and the pressure plate 5 provides space for the movement of the pressure plate 5 and the screw rod 2.

[0042] Reference Figure 5A plurality of mounting grooves 8 are provided on the annular surface of the bottom of the friction disc 3 that matches the upper surface of the tapered roller bearing 11. A disc spring 81, a pad 82 and an adjusting bolt 83 are installed in each mounting groove 8. The pad 82 is elastic and can be a rubber block or a nylon block. The disc spring 81 is located in the mounting groove 8. The pad 82 is located below the disc spring 81 and abuts against the upper surface of the bearing 11. The pad 82 can slide along the length direction of the mounting groove 8. The adjusting bolt 83 passes through the pad 82 and the disc spring 81 in sequence and is threadedly connected to the bottom of the friction disc 3. The height of the nail head of the adjusting bolt 83 is higher than the bottom surface of the pad 82, and the adjusting bolt 83 does not contact the upper surface of the bearing 11. The adjusting bolt 83 is used to limit the sliding height of the pad 82. During the striking process, the disc spring 81 plays a buffering role on the friction disc 3. When the press machine strikes the workpiece, the friction disc 3 may move upward. When the friction disc 3 moves upward, the disc spring 81 stretches, and the pad 82 remains stationary under the elastic force of the disc spring 81, and continues to abut against the surface of the bearing 11. When the friction disc 3 falls back, the pad 82 always remains stationary, and the friction disc 3 squeezes the disc spring 81. The disc spring 81 is compressed and exerts an upward force on the friction disc 3, which reduces the impact force between the friction disc 3 and the bearing 11 when it falls back, reduces the rigid impact of the friction disc 3 on the bearing 11, and reduces the operating noise, thereby increasing the service life of the rolling bearing 11 and the friction disc 3.

[0043] The implementation principle of the connection structure of a screw press clutch in the embodiment of the present application is as follows: when the slider strikes the workpiece, due to the interaction of forces, the screw 2 will be subjected to a counter-impact, and the pressure plate 5 will be driven to move upward under the action of the counter-impact. The gap between the connecting cover 7 and the pressure plate 5 provides space for the movement of the pressure plate 5 and the screw 2. At this time, the pressure plate 5 is separated from the friction plate 3, and the counter-impact force received by the screw 2 will not be transmitted to the friction plate 3 through the pressure plate 5, thereby ensuring the stability of the friction plate 3. At the same time, the disc spring 81 plays a buffering role on the friction plate 3. When the press strikes the workpiece, the friction plate 3 may move upward. When the friction plate 3 moves upward, the pad 82 remains stationary under the action of the disc spring 81 and continues to abut against the surface of the bearing 11. When the friction plate 3 falls back, the friction plate 3 squeezes the disc spring 81. The disc spring 81 is compressed and gives the friction plate 3 an upward force, thereby avoiding the rigid impact of the friction plate 3 on the bearing 11 and reducing the operating noise.

[0044] The embodiment of the present application has the effect of reducing the influence of the counter-impact force of the screw 2 on the friction disc 3 and ensuring the stability of the friction disc 3.

[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. A connection structure of a screw press clutch, characterized in that: include: A screw rod (2), wherein the screw rod (2) is arranged vertically; A friction disc (3), wherein the friction disc (3) and the screw rod (2) are coaxially arranged, and the friction disc (3) and the screw rod (2) are jointly provided with at least one connecting pin (4), and the friction disc (3) and the screw rod (2) can rotate synchronously under the action of the connecting pin (4), and the screw rod (2) can slide in the vertical direction relative to the friction disc (3); The screw rod (2) is provided with an annular groove (21) at a position above the friction disc (3), and a pressure plate (5) is arranged in the groove (21). The pressure plate (5) can abut against the upper surface of the friction disc (3), and the pressure plate (5) slides along with the screw rod (2).

2. A connection structure of a screw press clutch according to claim 1, characterized in that: The screw rod (2) is provided with first connecting grooves (22) at positions corresponding to the friction disc (3) on the outer circumference thereof, and the same number of first connecting grooves (22) as the connecting pins (4) are provided; the friction disc (3) is provided with second connecting grooves (31) at positions corresponding to the first connecting grooves (22) on the inner circumference thereof; each connecting pin (4) is transitionally matched with both the first connecting groove (22) and the second connecting groove (31); and both the first connecting groove (22) and the second connecting groove (31) are vertically arranged.

3. The connection structure of a screw press clutch according to claim 1, characterized in that: A plurality of adjustment pads (6) are arranged between the pressure plate (5) and the friction disk (3).

4. The connection structure of a screw press clutch according to claim 1, characterized in that: The pressing plate (5) is divided into a plurality of parts, and the pressing plate (5) can be separated from the screw (2) by separating the plurality of parts of the pressing plate (5).

5. The connection structure of a screw press clutch according to claim 2, characterized in that: The pressing plate (5) is capable of completely covering the cross-sections of the first connecting groove (22) and the second connecting groove (31).

6. The connection structure of a screw press clutch according to claim 2, characterized in that: The first connecting groove (22) and the second connecting groove (31) are both semicircular grooves with equal diameters, and the connecting pin (4) is a cylindrical pin.

7. A connection structure of a screw press clutch according to claim 4, characterized in that: A connecting cover (7) is coaxially arranged above the friction disc (3); the inner wall of the connecting cover (7) abuts against the outer circumference of the pressure plate (5); and a gap is reserved between the inner wall of the connecting cover (7) and the upper surface of the pressure plate (5).

8. The connection structure of a screw press clutch according to claim 7, characterized in that: The connecting cover (7) is bolted to the friction plate (3).

9. The connection structure of a screw press clutch according to claim 1, characterized in that: A plurality of mounting grooves (8) are provided on the annular surface of the bottom of the friction disk (3) and the upper surface of the bearing (11), and a disc spring (81) and an elastic pad (82) are installed in each of the mounting grooves (8). The pad (82) is located below the disc spring (81) and abuts against the upper surface of the bearing (11), and the pad (82) can slide along the length direction of the mounting groove (8); the pad (82) is provided with an adjusting bolt (83), and the adjusting bolt (83) passes through the pad (82) and the disc spring (81), and the adjusting bolt (83) is threadedly connected to the friction disk (3), and the adjusting bolt (83) does not contact the upper surface of the bearing (11).

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