Transmission mechanism with overload protection function and stamping device

Abstract

The utility model discloses a transmission mechanism with an overload protection function and a stamping device, and belongs to the technical field of battery processing equipment. The transmission mechanism comprises a driving shaft assembly, a driven shaft assembly and a transmission assembly, wherein a first convex ring of the driving shaft assembly is provided with a first through hole; a second convex ring of the driven shaft assembly is provided with a second through hole; the transmission assembly comprises a fixing piece, an elastic piece and a ball, the fixing piece is arranged outside the first convex ring and the second convex ring in a sleeving mode and installed on the driving shaft assembly in a limiting mode, the elastic piece is connected between the fixing piece and the ball, and the ball is clamped in the first through hole and the second through hole under a certain torque so that the driven shaft assembly can synchronously rotate along with the driving shaft assembly. When the driven shaft assembly is overloaded, the inner wall of the second through hole can generate axial acting force on the ball, the ball compresses the elastic piece to be separated from the second through hole, at the moment, the driving shaft assembly idles, and the situation that the transmission mechanism is damaged due to overload can be avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery processing equipment, in particular to a transmission mechanism with an overload protection function and a stamping device. BACKGROUND

[0002] In a processing process of a battery fixture, a stamping device needs to be used. In the related art, the stamping device usually comprises a stamping mechanism and a pushing mechanism. The stamping mechanism is used to complete stamping of the battery fixture, and the pushing mechanism is used to push the battery fixture after the stamping out of the stamping mechanism.

[0003] Since the power source of the stamping mechanism and the power source of the pushing mechanism are the same power source, that is, the same power source drives the stamping mechanism and the pushing mechanism through different transmission mechanisms. When the battery fixture is stuck on the stamping mechanism, the pushing mechanism is easy to cause overload due to the sticking of the battery fixture, thereby causing damage to the transmission mechanism, and even causing damage to the power source.

[0004] Therefore, there is an urgent need for a transmission mechanism with an overload protection function to solve the above problems. CONTENT OF THE INVENTION

[0005] The application aims to solve or at least alleviate part or all of the above problems. To this end, the application aims to provide a transmission mechanism with an overload protection function and a stamping device, which can avoid damage to the transmission mechanism or the power source caused by product sticking, and improve the stability of the equipment.

[0006] In order to achieve the above target, the application adopts the following technical solution:

[0007] In a first aspect, a transmission mechanism with an overload protection function is provided, comprising:

[0008] A driving shaft assembly has a first protruding ring, and a first through hole is formed in the first protruding ring;

[0009] A driven shaft assembly has a second protruding ring, and a second through hole corresponding to the first through hole is formed in the second protruding ring;

[0010] A transmission assembly comprises a fixing member, an elastic member and a ball. The fixing member is sleeved outside the first protruding ring and the second protruding ring and is limitedly installed on the driving shaft assembly. The elastic member is fixedly connected between the fixing member and the ball. The ball can be clamped in the first through hole and the second through hole under a certain torque, so that the driven shaft assembly rotates synchronously with the driving shaft assembly.

[0011] As an alternative of the transmission mechanism with overload protection function, the fixing member cooperates with the first convex ring to form a receiving cavity for receiving the elastic member and the ball.

[0012] As an alternative of the transmission mechanism with overload protection function, the transmission assembly further comprises a transmission sheet, which is sleeved outside the driving shaft assembly and located in the receiving cavity, and the transmission sheet is located between the elastic member and the ball.

[0013] As an alternative of the transmission mechanism with overload protection function, a limiting groove is formed on the transmission sheet, and part of the ball is embedded in the limiting groove.

[0014] As an alternative of the transmission mechanism with overload protection function, the number of the balls is multiple, and the multiple balls are uniformly and spacedly arranged around the rotation axis of the driving shaft assembly.

[0015] As an alternative of the transmission mechanism with overload protection function, the number of the elastic members is multiple, and the multiple elastic members are uniformly and spacedly arranged around the rotation axis of the driving shaft assembly.

[0016] As an alternative of the transmission mechanism with overload protection function, the fixing member comprises a first shell and a second shell which is detachably and fixedly connected with the first shell, the first shell is sleeved outside the driving shaft assembly, and the first shell has a first limiting portion which abuts against the elastic member, the second shell is sleeved outside the driven shaft assembly, and the second shell has a second limiting portion which abuts against the second convex ring.

[0017] As an alternative of the transmission mechanism with overload protection function, the first shell is threadedly connected with the second shell.

[0018] As an alternative of the transmission mechanism with overload protection function, the transmission assembly further comprises a pressure adjusting member, which is threadedly connected outside the driving shaft assembly, and the pressure adjusting member abuts against the first limiting portion.

[0019] As an alternative of the transmission mechanism with overload protection function, the diameter of the first through hole fixing member is greater than the diameter of the second through hole fixing member and smaller than the diameter of the ball fixing member, and part of the ball fixing member can pass through the first through hole fixing member and be embedded in the second through hole fixing member.

[0020] As an alternative of the transmission mechanism with overload protection function, the driving shaft assembly comprises a driving shaft and a main shaft bushing which is detachably and fixedly connected outside the driving shaft, and the main shaft bushing has the first convex ring; and / or

[0021] The driven shaft assembly comprises a driven shaft and a driven shaft bushing detachably fixed outside the driven shaft, and the driven shaft bushing has the second protruding ring.

[0022] In a second aspect, a stamping device is provided, comprising a power source, a pushing mechanism, a stamping mechanism and a transmission mechanism with overload protection function as described above, the power source is in transmission connection with the pushing mechanism through the transmission mechanism, and the pushing mechanism is used to push the products stamped by the stamping mechanism.

[0023] The application has the following beneficial effects:

[0024] The transmission mechanism with overload protection function provided by the application comprises a driving shaft assembly, a driven shaft assembly and a transmission assembly, the first protruding ring of the driving shaft assembly has a first through hole, the second protruding ring of the driven shaft assembly has a second through hole, the transmission assembly comprises a fixing member, an elastic member and a ball, the fixing member is sleeved outside the first protruding ring and the second protruding ring and is limitingly installed on the driving shaft assembly, the elastic member is connected between the fixing member and the ball, and the ball is clamped in the first through hole and the second through hole under a certain torque, so that the driven shaft assembly rotates synchronously with the driving shaft assembly. When the driven shaft assembly is overloaded, the inner wall of the second through hole will generate an axial force on the ball, so that the ball compresses the elastic member and is separated from the second through hole, at this time, the driving shaft assembly idles, and the damage of the transmission mechanism due to overload can be avoided.

[0025] The stamping device provided by the application can avoid the damage of the transmission mechanism or the power source due to overload by applying the above transmission mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the description of the embodiments of the application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the contents of the embodiments of the application and the drawings.

[0027] Figure 1 FIG. 1 is a structural schematic diagram of a stamping device provided by an embodiment of the application.

[0028] Figure 2 FIG. 2 is a cross-sectional schematic diagram of a transmission mechanism provided by an embodiment of the application.

[0029] Figure 3 FIG. 3 is an exploded schematic diagram of a transmission mechanism provided by an embodiment of the application.

[0030] Reference signs:

[0031] 100, pushing mechanism; 200, stamping mechanism; 201, upper die; 202, lower die; 300, battery fixture;

[0032] 1, driving shaft assembly; 11, driving shaft; 12, main shaft bushing; 121, first protruding ring; 1211, first through hole;

[0033] 2, driven shaft assembly; 21, driven shaft; 22, shaft bushing; 221, second protruding ring; 2211, second through hole;

[0034] 3, transmission assembly; 31, fixing member; 311, first housing; 3111, first limiting part; 312, second housing; 3121, second limiting part; 32, elastic member; 33, ball; 34, transmission sheet; 341, limiting groove; 35, pressure adjusting member; 36, guiding member. DETAILED DESCRIPTION

[0035] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described and hereafter-accompanying drawings.

[0036] In the present application, the terms "comprising", "containing", "including", "having" or any other similar term are intended to encompass non-exclusive inclusion, such that processes, methods, articles or apparatuses that comprise a list of elements are not limited to those elements, but can also include other elements not expressly listed or inherent to such processes, methods, articles or apparatuses. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.

[0037] In the present application, the term "and / or", is a description of the association relationship between the associated objects, which means that there can be three kinds of relationships. For example, A and / or B, can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents a "and / or" relationship between the front and rear associated objects.

[0038] In the present application, the terms "connection", "combination", "coupling", "mounting" can be direct connection, combination, coupling or mounting, or indirect connection, combination, coupling or mounting. Among them, the direct connection refers to the connection of two parts or components without the need for an intermediate part, and the indirect connection refers to the connection of two parts or components with at least one intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0039] In this application, those of ordinary skill in the art will understand that the relative terms used in connection with a quantity or a condition (for example, "about", "approximately", "substantially" and the like) include the stated value and have the meaning indicated by the context. For example, the relative terms at least include the degree of error related to the measurement of a specific value, the tolerance caused by manufacturing, assembly, use and the like related to a specific value. Such terms should also be considered to disclose the range defined by the absolute values of the two endpoints. The relative terms can refer to the addition or subtraction of a certain percentage (for example, 1%, 5%, 10% or more) of the indicated value. The numerical value without the relative term should also be disclosed as a specific value with a tolerance. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to the addition or subtraction of a certain degree (for example, 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0040] In this application, those of ordinary skill in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0041] In this application, the terms "up", "down", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the application. In addition, it is also understood in the context that when referring to one element connected to another element "up" or "down", it can not only be directly connected to another element "up" or "down", but also indirectly connected to another element "up" or "down" through an intermediate element. It should also be understood that the terms "up", "down", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the lower side, the lower left side, the lower right side, the lower front side and the lower back side, etc.

[0042] Figure 1 The structure of the stamping device provided by the embodiments of the application is shown. As shown in the figure, the stamping device includes a power source, a stamping mechanism 200 and a pushing mechanism 100, the stamping mechanism 200 is used for stamping products, and the pushing mechanism 100 is used for pushing the products stamped by the stamping mechanism 200 out, so as to facilitate the next stamping operation. It should be noted that the stamping device can be used for stamping processing of the battery fixture 300. Figure 1

[0043] ​In the embodiment, the stamping mechanism 200 comprises an upper die 201 and a lower die 202, and the stamping forming of the product can be realized through cooperation of the upper die 201 and the lower die 202. In addition, the power source of the stamping mechanism 200 and the power source of the pushing mechanism 100 are the same power source, and then different transmission mechanisms are used to realize the up-down opening and closing movement of the upper die 201 of the stamping mechanism 200 and the linear pushing movement of the output end of the pushing mechanism 100.

[0044] The working process of the stamping device provided in the application is as follows: when the upper die 201 moves upward to open the die, the output end of the pushing mechanism 100 moves in the first direction to the direction of the stamping mechanism 200 and pushes out the product after stamping; when the upper die 201 moves downward to close the die, the output end of the pushing mechanism 100 moves in the first direction to the direction away from the stamping mechanism 200 to avoid the upper die 201. The first direction is the movement direction of the output end of the pushing mechanism 100.

[0045] In the related art, the stamping device further comprises a transmission mechanism, and the power source is in transmission connection with the pushing mechanism 100 through the transmission mechanism to provide power for the pushing mechanism 100. When the battery fixture 300 is stuck on the stamping mechanism 200, the pushing mechanism 100 is easy to cause load overload due to the sticking of the battery fixture 300, thereby causing damage of the transmission mechanism, and even causing damage of the power source.

[0046] In order to solve the above problems, the application further provides a transmission mechanism with an overload protection function, which can avoid the damage of the transmission mechanism caused by the overload of the pushing mechanism 100, and improve the stability of the equipment.

[0047] Figure 2 The sectional view of the transmission mechanism provided in the application is shown. Figure 3 The exploded view of the transmission mechanism provided in the application is shown. As shown in Figures 2 to 3As shown, the transmission mechanism comprises a driving shaft assembly 1, a driven shaft assembly 2 and a transmission assembly 3. The driving shaft assembly 1 has a first protruding ring 121, and a first through hole 1211 is formed in the first protruding ring 121. The driven shaft assembly 2 has a second protruding ring 221, and a second through hole 2211 corresponding to the first through hole 1211 is formed in the second protruding ring 221. The transmission assembly 3 comprises a fixing member 31, an elastic member 32 and a ball 33. The fixing member 31 is sleeved outside the first protruding ring 121 and the second protruding ring 221 and is limitingly installed on the driving shaft assembly 1. The elastic member 32 is connected between the fixing member 31 and the ball 33. The ball 33 can be clamped in the first through hole 1211 and the second through hole 2211 under a certain torque, so that the driven shaft assembly 2 rotates synchronously with the driving shaft assembly 1. When the driven shaft assembly 2 is overloaded, the inner wall of the second through hole 2211 will generate an axial force on the ball 33, so that the ball 33 compresses the elastic member 32 and is separated from the second through hole 2211. At this time, the driving shaft assembly 1 idles, and the damage of the transmission mechanism due to overload can be avoided.

[0048] The driving shaft assembly 1 comprises a driving shaft 11 and a main shaft sleeve 12 which is detachably fixed outside the driving shaft 11. The main shaft sleeve 12 has the first protruding ring 121. The driving shaft assembly 1 is designed as the detachable driving shaft 11 and the main shaft sleeve 12. On the one hand, it is convenient for the transmission connection between the driving shaft assembly 1 and the power source. On the other hand, when the main shaft sleeve 12 is worn, only the main shaft sleeve 12 needs to be replaced, and the driving shaft 11 does not need to be replaced, so the cost can be reduced.

[0049] Similarly, the driven shaft assembly 2 comprises a driven shaft 21 and a from shaft sleeve 22 which is detachably fixed outside the driven shaft 21. The from shaft sleeve 22 has the second protruding ring 221. The driven shaft assembly 2 is designed as the detachable driven shaft 21 and the from shaft sleeve 22. On the one hand, it is convenient for the transmission connection between the driven shaft assembly 2 and the pushing mechanism. On the other hand, when the from shaft sleeve 22 is worn, only the from shaft sleeve 22 needs to be replaced, and the driven shaft 21 does not need to be replaced, so the cost can be reduced.

[0050] In the embodiment, the fixing member 31 cooperates with the first protruding ring 121 to form a containing cavity for containing the elastic member 32 and the ball 33. The fixing member 31 comprises a first shell 311 and a second shell 312 which is detachably fixedly connected with the first shell 311. The first shell 311 is sleeved outside the driving shaft assembly 1 (specifically the main shaft sleeve 12), and the first shell 311 has a first limiting portion 3111 which abuts against the elastic member 32. The second shell 312 is sleeved outside the driven shaft assembly 2 (specifically the from shaft sleeve 22), and the second shell 312 has a second limiting portion 3121 which abuts against the second protruding ring 221. In this way, not only is the processing and manufacturing of the fixing member 31 convenient, but also the fixing member 31 is conveniently limitingly installed outside the main shaft sleeve 12 and the from shaft sleeve 22.

[0051] In addition, the diameter of the first through hole 1211 is greater than the diameter of the second through hole 2211 and less than the diameter of the ball 33, and the elastic member 32 can enable the ball 33 to pass through the first through hole 1211 and be embedded in the second through hole 2211, so that the driven shaft assembly 2 rotates synchronously with the driving shaft assembly 1. When the driven shaft assembly 2 is overloaded, the inner wall of the second through hole 2211 of the second protruding ring 221 will generate an axial force on the ball 33, so that the ball 33 compresses the elastic member 32 and is separated from the second through hole 2211, thereby enabling the driving shaft assembly 1 to be idled, and thus the damage of the transmission mechanism due to overload can be avoided.

[0052] In the embodiment, the first shell 311 is threadedly connected with the second shell 312. Specifically, the first shell 311 has external threads, and the second shell 312 has threaded holes threadedly connected with the external threads, and the second shell 312 is screwed onto the external threads of the first shell 311, so as to achieve detachable fixed connection of the second shell 312 with the first shell 311. Of course, in other embodiments, the first shell 311 and the second shell 312 can also be detachably fixedly connected by other manners, which are not limited herein.

[0053] Further, the transmission assembly 3 further comprises a pressure adjusting member 35, which is threadedly connected outside the driving shaft assembly 1 (specifically, the main shaft bushing 12), and the pressure adjusting member 35 abuts against the first limiting portion 3111. The pressure adjusting member 35 is used for adjusting the pre-pressure of the elastic member 32 on the ball 33, i.e., for adjusting the maximum load of the driven shaft assembly 2.

[0054] In the embodiment, the main shaft bushing 12 has external threads, and the pressure adjusting member 35 has threaded holes threadedly connected with the external threads. The pressure adjusting member 35 is screwed onto the external threads of the main shaft bushing 12, and by screwing the pressure adjusting member 35 in the forward or reverse direction, the pre-pressure of the elastic member 32 on the ball 33 can be adjusted. For example, as shown in FIG. 6, the pressure adjusting member 35 is screwed to the left, so as to reduce the pre-pressure of the elastic member 32 on the ball 33; and the pressure adjusting member 35 is screwed to the right, so as to increase the pre-pressure of the elastic member 32 on the ball 33. Figure 2

[0055] In order to stably transmit the elastic force of the elastic member 32 to the ball 33, the transmission assembly 3 further comprises a transmission sheet 34, which is sleeved outside the driving shaft assembly 1 and located in the accommodating cavity, and the transmission sheet 34 is located between the elastic member 32 and the ball 33.

[0056] Further, the transmission sheet 34 is provided with a limiting groove 341, and part of the ball 33 is embedded in the limiting groove 341, so as to limit the ball 33, thereby better transmitting the elastic force of the elastic member 32 to the ball 33. For example, the transmission sheet 34 can be selected from a steel sheet, and the ball 33 can be selected from a steel ball, so as to prolong the service life of the two.​

[0057] In the embodiment, the number of the balls 33 is four, and the four balls 33 are uniformly spaced around the rotation axis of the driving shaft assembly 1. In other embodiments, the number of the balls 33 can also be two, three, five, six, or any other number, which is not limited herein. In addition, the number of the transmission pieces 34 is one, and one transmission piece 34 cooperates with the plurality of balls 33 to stably transmit the elastic force of the elastic members 32 to the plurality of balls 33.

[0058] In the embodiment, the number of the elastic members 32 is multiple, and the multiple elastic members 32 are uniformly spaced around the rotation axis of the driving shaft assembly 1, which can provide sufficient pre-pressure for the balls 33. Of course, in other embodiments, the number of the elastic members 32 can also be one, and one elastic member 32 is sleeved outside the main shaft bushing 12 and abuts against the transmission piece 34. For example, the elastic member 32 can be a spring.

[0059] The transmission assembly 3 further includes a guide piece 36, the first housing 311 has a through hole, one end of the guide piece 36 is arranged in the through hole, and the other end abuts against the transmission piece 34, and the elastic member 32 is sleeved outside the guide piece 36. The guide piece 36 not only facilitates the positioning and installation of the elastic member 32, but also ensures the stability of the elastic member 32, so as to avoid the influence of the bending misalignment of the elastic member 32 on the overload protection function of the transmission assembly 3.

[0060] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the above embodiments do not limit the present application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A transmission mechanism with overload protection function, characterized in that, include: The drive shaft assembly (1) has a first convex ring (121) and a first through hole (1211) is provided on the first convex ring (121); The driven shaft assembly (2) has a second protruding ring (221), and the second protruding ring (221) has a second through hole (2211) corresponding to the first through hole (1211); The transmission assembly (3) includes a fixing member (31), an elastic member (32) and a ball (33). The fixing member (31) is sleeved on the outside of the first convex ring (121) and the second convex ring (221) and is limited and installed on the drive shaft assembly (1). The elastic member (32) is connected between the fixing member (31) and the ball (33), and the ball (33) can be locked in the first through hole (1211) and the second through hole (2211) under a certain torque, so that the driven shaft assembly (2) rotates synchronously with the drive shaft assembly (1).

2. The transmission mechanism with overload protection function according to claim 1, characterized in that, The fixing member (31) cooperates with the first convex ring (121) to form a receiving cavity for accommodating the elastic member (32) and the ball (33).

3. The transmission mechanism with overload protection function according to claim 2, characterized in that, The transmission assembly (3) further includes a transmission plate (34), which is sleeved outside the drive shaft assembly (1) and located inside the receiving cavity. The transmission plate (34) is located between the elastic element (32) and the ball (33).

4. The transmission mechanism with overload protection function according to claim 3, characterized in that, A limiting groove (341) is provided on the transmission plate (34), and part of the ball (33) is embedded in the limiting groove (341).

5. The transmission mechanism with overload protection function according to claim 4, characterized in that, The number of the balls (33) is multiple, and the multiple balls (33) are evenly spaced around the rotation axis of the drive shaft assembly (1); and / or The number of elastic elements (32) is multiple, and the multiple elastic elements (32) are evenly spaced around the rotation axis of the drive shaft assembly (1).

6. The transmission mechanism with overload protection function according to claim 2, characterized in that, The fastener (31) includes a first housing (311) and a second housing (312) detachably and fixedly connected to the first housing (311). The first housing (311) is sleeved on the drive shaft assembly (1) and has a first limiting part (3111) that abuts against the elastic member (32). The second housing (312) is sleeved on the driven shaft assembly (2) and has a second limiting part (3121) that abuts against the second convex ring (221).

7. The transmission mechanism with overload protection function according to claim 6, characterized in that, The transmission assembly (3) further includes a pressure regulating member (35), which is threaded to the outside of the drive shaft assembly (1) and abuts against the first limiting part (3111).

8. The transmission mechanism with overload protection function according to any one of claims 1-7, characterized in that, The diameter of the first through hole (1211) is larger than the diameter of the second through hole (2211) and smaller than the diameter of the ball (33). A portion of the ball (33) can pass through the first through hole (1211) and be embedded in the second through hole (2211).

9. The transmission mechanism with overload protection function according to any one of claims 1-7, characterized in that, The drive shaft assembly (1) includes a drive shaft (11) and a spindle bushing (12) detachably fixed to the outside of the drive shaft (11), the spindle bushing (12) having the first convex ring (121); and / or The driven shaft assembly (2) includes a driven shaft (21) and a driven shaft bushing (22) detachably fixed to the driven shaft (21), the driven shaft bushing (22) having the second convex ring (221).

10. A stamping device, characterized in that, It includes a power source, a feeding mechanism (100), a stamping mechanism (200), and a transmission mechanism with overload protection as described in any one of claims 1-9. The power source is connected to the feeding mechanism (100) via the transmission mechanism. The feeding mechanism (100) is used to push out the product stamped by the stamping mechanism (200).

Images