Safety clutch structure for assisting unit to move
By introducing a safety clutch structure to assist in the movement of the unit in the circular round die cutting machine, the relative rotation of the friction sprocket and friction disc is used to adjust the limit torque, the problem of low safety during the movement of the unit and high impact force of the joint is solved, and higher safety and reliability are achieved.
Patent Information
- Application Number
- CN202422652360.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-31
AI Technical Summary
During the movement of the unit, existing circular press die cutting machines cannot fully monitor items or personnel on the moving path, resulting in low safety, and the impact force in the joint bonding stage is relatively large and the system burden is heavier.
A safety clutch structure for assisting the movement of the unit is designed. By setting a moving friction assembly between the reduction motor and the gear of the unit moving, the extreme torque of the friction sprocket is adjusted by using the relative rotation of the friction sprocket and the friction disc to avoid damage to obstacles when the unit moves, and reducing the impact force during the closing stage.
It improves the safety of unit movement and structural reliability, has high response accuracy, reduces the burden on the transmission system, avoids damage to obstacles and impact force when connecting the machine.
Smart Images
Figure CN223294101U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of rotary die-cutting machine devices, in particular to a safety clutch structure for assisting the movement of a machine group. Background Art
[0002] The rotary die-cutter consists of a paper feeder, pre-crease correction section, a creasing section, a pre-die-cut correction section, and a die-cutting section, all connected in series and mounted on a track below. The machine must be moved apart to change products, change dies, or perform routine maintenance. Once these tasks are complete, the machine can be reassembled and operated. During this process, operators outside the machine cannot fully determine whether there are objects or people inside, which can cause damage to personnel or objects during movement.
[0003] In ordinary personnel protection structures, personnel protection mainly uses electronic grids and sensors for electronic protection. However, the on-site situation during personnel debugging is bound to exceed this common situation. During the entire process of manual debugging and re-closing by the debugger, it is impossible to guarantee a completely effective electronic safety method.
[0004] Therefore, the existing electronic safety cannot fully cover the monitoring of the unit's movement process. If it is unable to monitor any moment of movement, if there are objects or people obstacles on the moving path, it will cause harm to people or objects, resulting in poor safety. In addition, the impact force received by the unit during the final assembly and bonding stage is also large, which puts a heavy burden on the system. Utility Model Content
[0005] The purpose of the present utility model is to provide a safety clutch structure to assist the movement of the unit in order to overcome the defects of the prior art in that the unit cannot be fully monitored on the objects or personnel on the moving path during the moving process and the safety is low.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A safety clutch structure for assisting the movement of a unit, used for transmission connection between a reduction motor and a gear for moving the unit, the clutch structure comprising a movable friction device seat, a first movable friction disc, a second movable friction disc, a friction adjustment assembly and a movable friction wheel shaft;
[0008] The movable friction device seat is provided with a rotatable friction sprocket, and the friction sprocket is driven and connected to the reduction motor. The first movable friction disc is fixed on the movable friction device seat, and the second movable friction disc can be axially moved and fixed on the movable friction device seat. The two sides of the friction sprocket are respectively in contact with and connected to the first movable friction disc and the second movable friction disc, and the second movable friction disc is connected to a friction adjustment component for adjusting the positive pressure between the second movable friction disc and the friction sprocket; the movable friction wheel shaft is rotatably fixed on the unit, and one end of the movable friction wheel shaft is connected to the movable friction device seat, and the other end is connected to the gear.
[0009] Preferably, the friction adjustment assembly includes a butterfly spring and a round nut;
[0010] The butterfly spring is sleeved on the movable friction device seat, and the round nut is rotatably fixed on the movable friction device seat. One side of the butterfly spring abuts against the side of the second movable friction disk away from the friction sprocket, and the other side abuts against the round nut.
[0011] Preferably, a friction disc seat is provided between the second movable friction disc and the movable friction device seat, the friction disc seat flat key is connected to the movable friction device seat, the second movable friction disc is fixed on the side of the friction disc seat close to the friction sprocket, and the other side of the friction disc seat is connected to the friction adjustment assembly.
[0012] Preferably, the movable friction device seat includes a coaxially distributed mounting shaft and a limiting step, the limiting step is fixed to one end of the mounting shaft, and the first movable friction disc is sleeved on the mounting shaft and fixed to a side of the limiting step close to the mounting shaft;
[0013] The friction sprocket is rotatably fixed on the mounting shaft, the second movable friction disc is axially movable and fixed on the mounting shaft, and the friction adjustment assembly is connected to an end of the mounting shaft away from the limiting step.
[0014] Preferably, a mounting through hole is provided in the mounting shaft, and the mounting through hole is a stepped hole. The movable friction wheel shaft is located in the mounting through hole and is connected to the mounting shaft flat key. A gasket and a screw are provided at one end of the movable friction wheel shaft. The gasket is fixed to one end of the movable friction wheel shaft by a screw and rests on the step of the mounting through hole.
[0015] Preferably, a friction copper sleeve is provided between the friction sprocket and the mounting shaft, and the friction copper sleeve has a clearance fit with the mounting shaft and an interference fit with the mounting hole of the friction sprocket.
[0016] Preferably, the clutch structure also includes a bearing seat and a bearing; the bearing seat is fixed on the unit, and the bearing seat is provided with a bearing mounting groove, and the bearing includes a first bearing and a second bearing, and the first bearing and the second bearing are respectively installed in the bearing mounting grooves at both ends of the bearing seat, and the movable friction wheel shaft passes through the inner mounting holes of the first bearing and the second bearing.
[0017] Preferably, the bearing is a deep groove ball bearing.
[0018] Preferably, a transmission sprocket and a chain are provided at the output end of the reduction motor, the reduction motor drives and connects to the transmission sprocket, and the transmission sprocket is connected to the friction sprocket through the chain transmission.
[0019] Preferably, a mounting plate, studs and fastening screws are provided between the reduction motor and the unit;
[0020] A waist-shaped hole is provided on the mounting plate, and the long axis direction of the waist-shaped hole is parallel to the straight line connecting the axis centers of the transmission sprocket and the friction sprocket. The reduction motor is fixed on the mounting plate, one end of the stud is fixed on the unit, and the fastening screw passes through the waist-shaped hole to connect the stud.
[0021] Compared with the prior art, the utility model has the following advantages:
[0022] (1) This solution sets a movable friction assembly between the friction sprocket driven by the reduction motor and the gear of the unit. The first movable friction disc and the second movable friction disc close to the two sides of the friction sprocket are used in conjunction with the friction adjustment assembly to adjust the limit torque of the friction sprocket. When the gear encounters an obstacle and the load increases, the friction sprocket and the movable friction seat rotate relative to each other. The movable friction seat cannot drive the gear to rotate, and the unit stops moving. This avoids damage to obstacles during the movement of the unit and improves the safety of the unit movement. Compared with electronic monitoring, the structure is more reliable and the response accuracy is also higher. At the same time, the final closing and fitting stage of the unit movement also reduces the impact between units and reduces the burden on the transmission system.
[0023] (2) In this solution, the second movable friction disc is fixed on the friction disc seat, and the friction disc seat is installed on the movable friction device seat so that it can be axially moved by a flat key. A butterfly spring and a round nut for adjusting the tightness of the butterfly spring are installed on one side of the friction disc seat. The compression of the butterfly spring is adjusted by the round nut, and then the positive pressure of the movable friction disc on both sides of the friction sprocket is adjusted, that is, the braking torque of the movable friction disc on the friction sprocket is adjusted. The adjustment is convenient, the braking is reliable, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A schematic diagram of the explosion structure of the clutch structure provided by the utility model;
[0025] Figure 2 A cross-sectional view of the clutch structure provided by the utility model;
[0026] Figure 3 A schematic structural diagram of the clutch structure provided by the utility model;
[0027] In the figure: 1. movable friction device seat; 2. first movable friction disk; 3. friction device copper sleeve; 4. friction disk seat; 5. bearing seat; 6. movable friction wheel shaft; 7. second movable friction disk; 8. gear; 9. mounting plate; 10. stud; 11. washer; 12. gasket; 13. friction sprocket; 14. transmission sprocket; 15. chain; 16. disc spring; 17. reduction motor; 18. bearing; 19. round nut; 20. stop washer; 101. mounting shaft; 102. limit step; 103. mounting through hole; 91. waist-shaped hole. DETAILED DESCRIPTION
[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.
[0031] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.
[0032] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0033] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", not that the structure must be completely horizontal, but can be slightly tilted.
[0034] Example 1
[0035] like Figure 1 As shown, this embodiment provides a safety clutch structure for assisting the movement of the unit, which is used for the transmission connection between the reduction motor 17 and the gear 8 for the unit movement. The clutch structure includes a movable friction device seat 1, a first movable friction plate 2, a second movable friction plate 7, a friction adjustment assembly and a movable friction wheel shaft 6;
[0036] A rotatable friction sprocket 13 is provided on the movable friction device seat 1, and the friction sprocket 13 drives and is connected to the reduction motor 17. The first movable friction disc 2 is fixed on the movable friction device seat 1, and the second movable friction disc 7 can be axially moved and fixed on the movable friction device seat 1. The two sides of the friction sprocket 13 are respectively in contact with and connected to the first movable friction disc 2 and the second movable friction disc 7. The second movable friction disc 7 is connected to a friction adjustment component for adjusting the positive pressure between the second movable friction disc 7 and the friction sprocket 13; the movable friction wheel shaft 6 can be rotatably fixed on the unit, and one end of the movable friction wheel shaft 6 is connected to the movable friction device seat 1, and the other end is connected to the gear 8.
[0037] Working principle: When the unit moves normally, the first movable friction disc 2 and the second movable friction disc 7 clamp the friction sprocket 13, and the reduction motor 17 drives the friction sprocket 13 and the movable friction device seat 1 to rotate, and then drives the gear 8 to rotate through the movable friction wheel shaft 6; when the unit encounters an obstacle during movement, the load on the gear 8 on the unit increases. When the load is greater than the limit torque between the movable friction disc and the friction sprocket 13, the friction sprocket 13 and the movable friction device seat 1 rotate relative to each other, and the gear 8 stops rotating, that is, the unit stops moving.
[0038] By setting a movable friction assembly between the friction sprocket 13 driven by the reduction motor 17 and the gear 8 moved by the unit, and using the first movable friction disc 2 and the second movable friction disc 7 close to both sides of the friction sprocket 13, in conjunction with the friction adjustment assembly, the limit torque received by the friction sprocket 13 is adjusted. When the gear 8 encounters an obstacle and the load increases, the friction sprocket 13 and the movable friction device seat 1 rotate relative to each other, and the movable friction device seat 1 cannot drive the gear 8 to rotate, and the unit stops moving. This avoids damage to obstacles during the unit movement and improves the safety of the unit movement. Compared with electronic monitoring, the structure is more reliable and the response accuracy is higher. At the same time, the final closing and fitting stage of the unit movement also reduces the impact between units and reduces the burden on the transmission system.
[0039] Preferred embodiment, as Figure 2 As shown, the friction adjustment assembly includes a butterfly spring 16 and a round nut 19;
[0040] The butterfly spring 16 is sleeved on the movable friction device seat 1, and the round nut 19 is rotatably fixed on the movable friction device seat 1. One side of the butterfly spring 16 abuts against the side of the second movable friction disk 7 away from the friction sprocket 13, and the other side abuts against the round nut 19.
[0041] Among them, a friction disc seat 4 is provided between the second movable friction disc 7 and the movable friction device seat 1, the friction disc seat 4 is connected to the movable friction device seat 1 by a flat key, the second movable friction disc 7 is fixed on the side of the friction disc seat 4 close to the friction sprocket 13, and the other side of the friction disc seat 4 is connected to the friction adjustment assembly.
[0042] Optionally, in order to improve the axial fixing stability of the round nut 19 , a double nut structure is adopted, and a brake gasket 20 is provided between the two round nuts 19 to improve the reliability of the axial fixing of the round nut 19 to the butterfly spring 16 .
[0043] The second movable friction disc is fixed on the friction disc seat, and the friction disc seat is axially movable on the movable friction device seat with a flat key, and a butterfly spring and a round nut for adjusting the tightness of the butterfly spring are installed on one side of the friction disc seat. The compression amount of the butterfly spring is adjusted by the round nut, and then the positive pressure of the movable friction disc on both sides of the friction sprocket is adjusted, that is, the braking torque of the movable friction disc on the friction sprocket is adjusted. The adjustment is convenient, the braking is reliable, and the practicability is strong.
[0044] Specifically, the movable friction device seat 1 includes a coaxially distributed mounting shaft 101 and a limiting step 102. The limiting step 102 is fixed to one end of the mounting shaft 101. The first movable friction disc 2 is sleeved on the mounting shaft 101 and fixed to the side of the limiting step 102 close to the mounting shaft 101.
[0045] The friction sprocket 13 is rotatably fixed on the mounting shaft 101 , the second movable friction disc 7 is axially movable and fixed on the mounting shaft 101 , and the friction adjustment assembly is connected to the end of the mounting shaft 101 away from the limiting step 102 .
[0046] A mounting through hole 103 is provided in the mounting through hole 103, which is a stepped hole. The movable friction wheel shaft 6 is located in the mounting through hole 103 and is connected to the mounting shaft 101 with a flat key. A gasket 12 and a screw are provided at one end of the movable friction wheel shaft 6. The gasket 12 is fixed to one end of the movable friction wheel shaft 6 by a screw and rests on the step of the mounting through hole 103.
[0047] A friction copper sleeve 3 is provided between the friction sprocket 13 and the mounting shaft 101 . The friction copper sleeve 3 is clearance-fitted with the mounting shaft 101 and interference-fitted with the mounting hole of the friction sprocket 13 .
[0048] Specifically, the clutch structure also includes a bearing seat 5 and a bearing 18; the bearing seat 5 is fixed on the unit, and the bearing seat 15 is provided with a bearing mounting groove. The bearing 18 includes a first bearing and a second bearing, and the first bearing and the second bearing are respectively installed in the bearing mounting grooves at both ends of the bearing seat 15, and the movable friction wheel shaft 6 passes through the inner mounting holes of the first bearing and the second bearing.
[0049] Among them, the bearing 18 is a deep groove ball bearing, which is located at both ends of the bearing seat 5. Deep groove ball bearings with dust covers can be used to reduce the contamination of the deep groove ball bearings by external impurities and extend the service life of the bearing 18 and the clutch structure.
[0050] Specifically, a transmission sprocket 14 and a chain 15 are provided at the output end of the reduction motor 17 . The reduction motor 17 drives and connects to the transmission sprocket 14 , and the transmission sprocket 14 is driven and connected to the friction sprocket 13 through the chain 15 .
[0051] Further, if Figure 3 As shown, a mounting plate 9, studs 10 and fastening screws are provided between the reduction motor 17 and the unit;
[0052] A waist-shaped hole 91 is provided on the mounting plate 9. The long axis direction of the waist-shaped hole 91 is parallel to the straight line connecting the axis centers of the transmission sprocket 14 and the friction sprocket 13. The reduction motor 17 is fixed on the mounting plate 9. One end of the stud 10 is fixed to the unit. The fastening screw passes through the waist-shaped hole 91 to connect the stud 10. In order to ensure the guiding effect of the waist-shaped hole 91, a washer is set between the fastening screw and the mounting plate 9 to prevent the fastening screw from falling off.
[0053] The friction sprocket 13 and the transmission sprocket 14 are connected by a chain 15. The tension of the chain 15 needs to be considered. A waist-shaped hole 91 is provided on the mounting plate 7 to which the reduction motor 17 is fixed. The position of the mounting plate 9 can be understood through the waist-shaped hole 91, and the distance between the two sprockets can be changed to adjust the tension of the chain 15. The operation is convenient and the structure is reliable and stable.
[0054] This safety clutch utilizes a friction pair to transmit torque through the connection between the master and slave components. The clamping force of the connection is adjusted by a butterfly spring and a round nut. When the load exceeds the limit torque set by the spring, relative slippage occurs between the master and slave components of the clutch, causing the clutch to fail. This safety clutch is suitable for applications where the movement trajectory is stable, space is limited, and the joints must be aligned seamlessly after relocation and reassembly, which are not fully addressed by electronic safety measures.
[0055] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.
Claims
1. A safety clutch structure for assisting the movement of a unit, used for the transmission connection between a reduction motor (17) and a gear (8) for moving the unit, characterized in that: The clutch structure comprises a movable friction device seat (1), a first movable friction disc (2), a second movable friction disc (7), a friction adjustment component and a movable friction wheel shaft (6); The movable friction device seat (1) is provided with a rotatable friction sprocket (13), the friction sprocket (13) is driven and connected to the reduction motor (17), the first movable friction disc (2) is fixed on the movable friction device seat (1), the second movable friction disc (7) is axially movable and fixed on the movable friction device seat (1), the two sides of the friction sprocket (13) are respectively in contact with and connected to the first movable friction disc (2) and the second movable friction disc (7), the second movable friction disc (7) is connected to a friction adjustment component for adjusting the positive pressure between the second movable friction disc (7) and the friction sprocket (13); the movable friction wheel shaft (6) is rotatably fixed on the unit, one end of the movable friction wheel shaft (6) is connected to the movable friction device seat (1), and the other end is connected to the gear (8).
2. A safety clutch structure for assisting the movement of a unit according to claim 1, characterized in that: The friction adjustment assembly includes a butterfly spring (16) and a round nut (19); The butterfly spring (16) is sleeved on the movable friction device seat (1), and the round nut (19) is rotatably fixed on the movable friction device seat (1). One side of the butterfly spring (16) abuts against the side of the second movable friction disk (7) away from the friction sprocket (13), and the other side abuts against the round nut (19).
3. A safety clutch structure for assisting the movement of a unit according to claim 1, characterized in that: A friction disc seat (4) is provided between the second movable friction disc (7) and the movable friction device seat (1), the friction disc seat (4) is connected to the movable friction device seat (1) via a flat key, the second movable friction disc (7) is fixed to one side of the friction disc seat (4) close to the friction sprocket (13), and the other side of the friction disc seat (4) is connected to a friction adjustment assembly.
4. A safety clutch structure for assisting unit movement according to claim 1, characterized in that: The movable friction device seat (1) comprises a coaxially distributed mounting shaft (101) and a limiting step (102), wherein the limiting step (102) is fixed to one end of the mounting shaft (101), and the first movable friction disc (2) is sleeved on the mounting shaft (101) and fixed to a side of the limiting step (102) close to the mounting shaft (101); The friction sprocket (13) is rotatably fixed on the mounting shaft (101), the second movable friction disc (7) is axially movable and fixed on the mounting shaft (101), and the friction adjustment assembly is connected to an end of the mounting shaft (101) away from the limiting step (102).
5. A safety clutch structure for assisting the movement of a unit according to claim 4, characterized in that: A mounting through hole (103) is provided in the mounting shaft (101), and the mounting through hole (103) is a stepped hole. The movable friction wheel shaft (6) is located in the mounting through hole (103) and is connected to the mounting shaft (101) with a flat key. A gasket (12) and a screw are provided at one end of the movable friction wheel shaft (6). The gasket (12) is fixed to one end of the movable friction wheel shaft (6) by the screw and abuts against the step of the mounting through hole (103).
6. A safety clutch structure for assisting the movement of a unit according to claim 4, characterized in that: A friction device copper sleeve (3) is provided between the friction sprocket (13) and the mounting shaft (101); the friction device copper sleeve (3) is clearance-fitted with the mounting shaft (101) and interference-fitted with the mounting hole of the friction sprocket (13).
7. The safety clutch structure for assisting the movement of a unit according to claim 1, characterized in that: The clutch structure further comprises a bearing seat (5) and a bearing (18); the bearing seat (5) is fixed on the unit, the bearing seat (5) is provided with a bearing mounting groove, the bearing (18) comprises a first bearing and a second bearing, the first bearing and the second bearing are respectively mounted in the bearing mounting grooves at both ends of the bearing seat (5), and the movable friction wheel shaft (6) passes through the inner mounting holes of the first bearing and the second bearing.
8. A safety clutch structure for assisting the movement of a unit according to claim 7, characterized in that: The bearing (18) is a deep groove ball bearing.
9. The safety clutch structure for assisting the movement of a unit according to claim 1, characterized in that: The output end of the reduction motor (17) is provided with a transmission sprocket (14) and a chain (15); the reduction motor (17) drives the transmission sprocket (14); and the transmission sprocket (14) is connected to the friction sprocket (13) through the chain (15).
10. A safety clutch structure for assisting the movement of a unit according to claim 9, characterized in that: A mounting plate (9), studs (10) and fastening screws are provided between the reduction motor (17) and the unit; The mounting plate (9) is provided with a waist-shaped hole (91), the long axis direction of the waist-shaped hole (91) is parallel to the straight line where the axis connecting the transmission sprocket (14) and the friction sprocket (13) is located, the reduction motor (17) is fixed on the mounting plate (9), one end of the stud (10) is fixed on the unit, and the fastening screw passes through the waist-shaped hole (91) to connect the stud (10).