Coupling assembly and slitting device

Abstract

The utility model relates to the field of mechanical transmission, and provides a coupling assembly and a slitting device. The coupling assembly comprises a first connecting piece used for being connected with one of the two transmission shafts, the first connecting piece is provided with a rotatable supporting wheel, and the rotating axis of the supporting wheel is eccentrically arranged relative to the rotating axis of the first connecting piece; the second connecting piece is used for being connected with the other one of the two transmission cutter shafts, a clamping groove is formed in the end, facing the first connecting piece, of the second connecting piece, the clamping groove is distributed to two side walls in the circumferential direction of the second connecting piece, and the supporting wheel extends into the position between the two side walls of the clamping groove; the supporting wheel is selectively in rolling fit with the two side walls of the clamping groove in the radial direction of the second connecting piece. Due to the fact that the supporting wheel is rotatably arranged, rolling friction exists between the supporting wheel and the side wall of the clamping groove, friction between the first connecting piece and the second connecting piece is small, vibration of the cutter shaft can be reduced, and fallen metal powder can be prevented from being rubbed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to a coupling assembly and a slitting device. Background Art

[0002] In the production process of lithium batteries, wide battery electrodes are often cut into sizes suitable for production by slitting machines. Common slitting machines generally include a frame and upper and lower knife shaft assemblies installed on the frame. The upper and lower knife shaft assemblies both include a knife shaft rotatably set on the frame and a blade installed on the knife shaft. The drive device is connected to the knife shaft to drive the knife shaft to rotate.

[0003] In the related art, the drive device is usually connected to the cutter shaft by spline transmission. However, due to processing errors and assembly errors, there is a coaxial error between the axis of the output shaft of the drive device and the axis of the cutter shaft. When the drive device drives the cutter shaft to rotate, there is a large radial relative friction between the spline teeth of the spline shaft and the spline teeth of the spline sleeve, which can easily cause the cutter shaft to shake and metal powder to fall off during the friction process, contaminating the pole piece. Utility Model Content

[0004] The utility model provides a coupling assembly and a slitting device, which are used to solve the defects in the prior art that there is large radial relative friction between the spline teeth of the spline shaft and the spline teeth of the spline sleeve, which not only easily causes the knife shaft to shake, but also easily causes metal powder to fall during the friction process and contaminate the pole piece.

[0005] In one aspect, the utility model provides a coupling assembly for connecting two transmission shafts, comprising:

[0006] A first connecting member, used to be connected to one of the two transmission shafts, the first connecting member is provided with a rotatable support wheel, and the rotation axis of the support wheel is eccentrically arranged relative to the rotation axis of the first connecting member;

[0007] The second connecting member is used to be connected to the other of the two transmission knife shafts. The second connecting member is provided with a slot at one end facing the first connecting member. The slot includes two side walls distributed along the circumference of the second connecting member. The support wheel extends between the two side walls of the slot. The support wheel selectively rolls with the two side walls of the slot in the radial direction of the second connecting member.

[0008] According to a coupling assembly provided by the utility model, the first connecting member includes a connecting shaft, and the supporting wheel is rotatably mounted on the connecting shaft.

[0009] A coupling assembly provided by the utility model also includes a baffle, a shoulder is arranged on the connecting shaft, the baffle is connected to the connecting shaft, there is a distance between the baffle and the shoulder, and the support wheel is arranged between the shoulder and the baffle.

[0010] According to a coupling assembly provided by the utility model, the baffle is connected to the connecting shaft through a retaining spring or a threaded fastener.

[0011] According to a coupling assembly provided by the utility model, it also includes a bearing, the bearing is installed on the first connecting member, and the supporting wheel is rotatably sleeved on the outer side of the bearing.

[0012] According to a coupling assembly provided by the utility model, the outer wall of the support wheel is arranged as a curved surface structure, and the support wheel selectively abuts against and rolls with two side walls of the slot through the curved surface structure.

[0013] According to a coupling assembly provided by the utility model, the number of the support wheels is set to at least two, at least two of the support wheels are distributed along the circumference of the first connecting member, the number of the slots is the same as the number of the support wheels, and the slots correspond to the support wheels one by one.

[0014] According to a coupling assembly provided by the utility model, both side walls of the slot are provided with guiding inclined surfaces at one end close to the first connecting member, and the two guiding inclined surfaces are away from each other along the direction from the second connecting member to the first connecting member.

[0015] According to a coupling assembly provided by the utility model, the second connecting member is configured as a hollow sleeve structure, the clamping groove is arranged on the cylinder wall of the sleeve structure, and the clamping groove passes through the cylinder wall of the sleeve structure.

[0016] On the other hand, the utility model also provides a slitting device, including a driving device, a knife shaft and the coupling assembly as described above, wherein the output shaft of the driving device and the knife shaft are respectively connected to the first connecting member and the second connecting member.

[0017] The coupling assembly provided by the utility model is connected to the output shaft of the driving device and the knife shaft respectively through the first connecting member and the second connecting member, the first connecting member is provided with an eccentrically arranged support wheel, and the second connecting member is provided with a slot for the support wheel to be placed. In the process of transmission from the driving device to the knife shaft, the support wheel on the first connecting member abuts against one of the two side walls of the slot of the second connecting member, so that the driving force is transmitted between the first connecting member and the second connecting member.

[0018] When there is an eccentric error between the output shaft of the driving device and the knife shaft, the support wheel and the side wall of the slot produce relative movement in the radial direction of the second connecting member. Since the support wheel is rotatable, there is rolling friction between the support wheel and the side wall of the slot, which makes the friction between the first connecting member and the second connecting member smaller, thereby reducing the vibration of the knife shaft and the metal powder that falls due to friction.

[0019] The slitting device provided by the utility model includes the coupling assembly provided by the utility model, and thus includes all the above advantages of the coupling assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of a coupling assembly provided by an embodiment of the utility model;

[0022] Figure 2 It is an axonometric view of the coupling assembly provided by the embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a slitting device provided in an embodiment of the utility model;

[0024] Figure 4 It is an axonometric diagram of the slitting device provided in the embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. First connecting member; 101. Connecting shaft; 2. Second connecting member; 201. Slot; 201a. Side wall; 201b. Guide ramp; 3. Support wheel; 4. Driving device; 5. Cutter shaft; 501. Support shaft; 502. Spacer; 503. Cutter; 504. Fixing nut; 6. Baffle; 7. Threaded fastener; 8. Coupling; 9. Support; 10. Bearing. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Combine the following Figure 1-Figure 4 The coupling assembly provided in the embodiment of the utility model is introduced.

[0029] Specifically, the coupling assembly is used to connect two transmission shafts, for example, the coupling assembly is used to connect the output shaft of the driving device 4 and the knife shaft 5. Specifically, the coupling assembly includes a first connecting member 1 and a second connecting member 2.

[0030] The first connecting member 1 is used to connect with one of the two transmission shafts, and the second connecting member 2 is used to connect with the other of the two transmission shafts. For example, the first connecting member 1 is connected with one of the driving device 4 and the knife shaft 5, and the second connecting member 2 is connected with the other of the driving device 4 and the knife shaft 5. Figure 3-Figure 4 The example shown is that the first connecting member 1 is connected to the output shaft of the driving device 4 , and the second connecting member 2 is connected to the knife shaft 5 .

[0031] The first connecting member 1 is provided with a rotatable supporting wheel 3, and the rotation axis of the supporting wheel 3 is eccentrically arranged relative to the rotation axis of the first connecting member 1. Figure 1 As shown, the rotation axis of the support wheel 3 is parallel to the rotation axis of the first connecting member 1 , and the rotation axis of the support wheel 3 deviates from the rotation axis of the first connecting member 1 .

[0032] The second connecting member 2 is provided with a slot 201 at one end thereof facing the first connecting member 1. The slot 201 includes two side walls 201a distributed along the circumference of the second connecting member 2. The circumferential distribution of the second connecting member 2 refers to the circumferential distribution along the rotation axis of the second connecting member 2. The support wheel 3 extends between the two side walls 201a of the slot 201, and the support wheel 3 selectively abuts against the two side walls 201a of the slot 201, and the support wheel 3 is used to roll with the abutting side walls 201a in the radial direction of the second connecting member 2. The radial direction of the second connecting member 2 refers to the direction perpendicular to the rotation axis of the second connecting member 2.

[0033] The coupling assembly provided in the embodiment of the utility model is connected to the output shaft of the driving device 4 and the knife shaft 5 respectively through the first connecting member 1 and the second connecting member 2. The first connecting member 1 is provided with an eccentrically arranged support wheel 3, and the second connecting member 2 is provided with a slot 201 for the support wheel 3 to be placed. In the process of transmission from the driving device 4 to the knife shaft 5, the support wheel 3 on the first connecting member 1 is abutted against one of the two side walls 201a of the slot 201 of the second connecting member 2, so that the driving force is transmitted between the first connecting member 1 and the second connecting member 2.

[0034] When there is an eccentric error between the output shaft of the driving device 4 and the knife shaft 5, the support wheel 3 and the side wall 201a of the slot 201 produce relative movement in the radial direction of the second connecting member 2. Since the support wheel 3 is rotatable, there is rolling friction between the support wheel 3 and the side wall 201a of the slot 201, which makes the friction between the first connecting member 1 and the second connecting member 2 smaller, thereby reducing the vibration of the knife shaft 5 and the metal powder that falls due to friction.

[0035] In some embodiments provided by the present utility model, the first connecting member 1 includes a connecting shaft 101, and the supporting wheel 3 is rotatably mounted on the connecting shaft 101. Such a configuration facilitates the installation of the supporting wheel 3.

[0036] Optionally, the first connecting member 1 further comprises a disc and a central shaft, the central shaft is arranged at one end of the disc, the central shaft is arranged coaxially with the disc, and the central shaft is connected to the driving device 4 or the knife shaft 5. The connecting shaft 101 is arranged at the other end of the disc, and the connecting shaft 101 is eccentrically arranged relative to the disc.

[0037] Optionally, the central shaft and the disc are configured as an integral structure, for example, the two may be a machined integral structure or a welded integral structure.

[0038] Optionally, the connecting shaft 101 can be plug-connected to the disc, welded, or configured as a machined integral structure or a welded integral structure.

[0039] In some embodiments provided by the utility model, the coupling assembly further includes a baffle 6. A shoulder is provided on the connecting shaft 101, the baffle 6 is connected to the connecting shaft 101, a distance is provided between the baffle 6 and the shoulder, and the support wheel 3 is provided between the shoulder and the baffle 6. In this embodiment, by providing the support wheel 3 between the baffle 6 and the shoulder, an axial positioning effect can be formed on the support wheel 3 through the shoulder and the baffle 6, reducing the axial movement of the support wheel 3 along the connecting shaft 101, so that the support wheel 3 can better cooperate with the side wall 201a of the slot 201.

[0040] In some embodiments provided by the present invention, the baffle 6 is connected to the connecting shaft 101 through a threaded fastener 7. Specifically, the baffle 6 abuts against the end surface of the connecting shaft 101, the threaded fastener 7 passes through the baffle 6 and is threadedly connected to the connecting shaft 101, and the head of the screw fastener abuts against the baffle 6 to fix the baffle 6. Optionally, the threaded fastener 7 is set as a screw. In this way, the threaded fastener 7 can provide a large axial force for the baffle 6 to ensure the limiting effect of the baffle 6 on the support wheel 3.

[0041] Of course, the baffle 6 is not limited to being fastened by the threaded fastener 7. For example, in other embodiments provided by the present invention, the baffle 6 is connected to the connecting shaft 101 by a retaining spring. Specifically, the baffle 6 is sleeved on the connecting shaft 101. The surface of the connecting shaft 101 is provided with an annular groove. The retaining spring is sleeved in the annular groove on the surface of the connecting shaft 101. The retaining spring abuts against the end surface of the baffle 6 away from the supporting wheel 3. In this way, the retaining spring is clamped with the annular groove on the surface of the connecting shaft 101 and will not loosen due to vibration, thereby improving the stability of the baffle 6.

[0042] In some embodiments provided by the utility model, the coupling assembly further includes a bearing 10. The bearing 10 is mounted on the first connecting member 1, and the support wheel 3 is rotatably mounted on the outer side of the bearing 10. Such a configuration can reduce the friction between the support wheel 3 and the first connecting member 1, so that the support wheel 3 rotates more smoothly.

[0043] Optionally, the bearing 10 is sleeved on the connecting shaft 101 , and the supporting wheel 3 is sleeved on the outer side of the bearing 10 .

[0044] Optionally, the bearing 10 is configured as a polymer self-lubricating sleeve. With this configuration, the size of the bearing 10 is relatively small, thereby making the structure of the first connecting member 1 more compact.

[0045] refer to Figure 1 and Figure 2 As shown, in some embodiments provided by the utility model, the outer wall of the support wheel 3 is set to a curved surface structure, for example, the curved surface structure can be a spherical structure or an ellipsoidal structure. The support wheel 3 selectively abuts against and rolls with the two side walls 201a of the slot 201 through the curved surface structure. In this embodiment, by setting the outer wall of the support wheel 3 to a curved surface structure, under the condition that there is an angle between the rotation axis of the first connecting member 1 and the rotation axis of the second connecting member 2, the curved surface structure of the support wheel 3 can also maintain reliable contact with the side wall 201a of the slot 201, thereby improving the stability and reliability of power transmission between the first connecting member 1 and the second connection.

[0046] In some embodiments provided by the present invention, the number of support wheels 3 is set to at least two, and at least two support wheels 3 are distributed along the circumference of the first connecting member 1. The number of the slots 201 is the same as the number of the support wheels 3, and the slots 201 correspond to the support wheels 3 one by one. In this way, at least two support wheels 3 can share the power transmitted between the first connecting member 1 and the second connecting member 2, avoid the problem of excessive stress on the support wheels 3, and extend the service life of the support wheels 3.

[0047] refer to Figure 1 and Figure 2As shown, in some embodiments provided by the utility model, the two side walls 201a of the slot 201 are both provided with guiding inclined surfaces 201b at one end close to the first connecting member 1, and the two guiding inclined surfaces 201b are away from each other along the direction from the second connecting member 2 to the first connecting member 1. In this embodiment, by providing the guiding inclined surfaces 201b on the side walls 201a of the slot 201, the guiding inclined surfaces 201b can guide the supporting wheel 3 during the process of inserting the supporting wheel 3 into the slot 201, so that the supporting wheel 3 can be easily inserted into the slot 201, thereby reducing the difficulty of installing the coupling assembly.

[0048] refer to Figure 1 and Figure 2 As shown, in some embodiments provided by the present invention, the second connecting member 2 is configured as a hollow sleeve structure, the clamping groove 201 is configured on the cylinder wall of the sleeve structure, and the clamping groove 201 passes through the cylinder wall of the sleeve structure, that is, the clamping groove 201 passes through the cylinder wall along the thickness direction of the cylinder wall. In this embodiment, by configuring the second connecting member 2 as a hollow sleeve structure, the weight of the second connecting member 2 can be reduced.

[0049] The utility model also provides a slitting device in an embodiment.

[0050] Specifically, the slitting device comprises a driving device 4, a knife shaft 5 and the coupling assembly as described above. The output shaft of the driving device 4 and the knife shaft 5 are connected to the first connecting member 1 and the second connecting member 2 respectively.

[0051] It should be noted that the slitting device includes a coupling assembly, and also includes all the above-mentioned advantages of the coupling assembly, which will not be described here.

[0052] Optionally, the slitting device also includes a coupling 8. The driving device 4 includes a reduction motor, and the output shaft of the reduction motor is connected to the first connecting member 1 through the coupling 8. Specifically, the first connecting member 1 includes a connecting shaft 101, a disc and a central shaft. The central shaft is arranged at one end of the disc, the central shaft is coaxially arranged with the disc, and the central shaft is connected to the output shaft of the reduction motor through the coupling 8. The connecting shaft 101 is arranged at the other end of the disc, and the connecting shaft 101 is eccentrically arranged relative to the disc, and the support wheel 3 is arranged on the connecting shaft 101. Such an arrangement facilitates the connection between the driving device 4 and the first connecting member 1.

[0053] Optionally, a polygonal countersunk hole is provided on the outer side of the bottom of the sleeve structure of the second connecting member 2, and the knife shaft 5 is provided with a polygonal column structure for extending into the polygonal countersunk hole and engaging with the polygonal countersunk hole. Figure 2 As shown, the bottom of the polygonal countersink is provided with a through hole, and the polygonal column structure is inserted into the polygonal hole. The screw arranged inside the second connecting member 2 passes through the through hole and is connected to the polygonal column structure to connect the second connecting member 2 to the knife shaft 5. The polygonal hole countersink is set as a rectangular hole.

[0054] Optionally, the cutter shaft 5 comprises a support shaft 501, a spacer sleeve 502, a cutter 503 and a fixing nut 504. A shaft shoulder is provided on the support shaft 501, and the fixing nut 504 is threadedly connected to the support shaft 501, and there is a spacing between the fixing nut 504 and the shaft shoulder. The number of cutters 503 is set to be multiple, and the cutters 503 are all mounted on the support shaft 501 and separated from each other by the spacer sleeve 502. A spacer sleeve 502 is provided between the cutter 503 and the shaft shoulder and between the cutter 503 and the fixing nut 504, and the cutter 503 can be axially positioned by the spacer sleeve 502 to prevent the cutter 503 from axially moving.

[0055] Optionally, one end of the support shaft 501 is provided with a polygonal column structure for connecting with the second connecting member 2. The slitting device further comprises a pair of supports 9, and both ends of the support shaft 501 are rotatably matched with the pair of supports 9 respectively.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A coupling assembly, characterized in that: For connecting two drive shafts, including: A first connecting member (1) is used to be connected to one of the two transmission shafts, the first connecting member (1) is provided with a rotatable supporting wheel (3), and the rotation axis of the supporting wheel (3) is eccentrically arranged relative to the rotation axis of the first connecting member (1); The second connecting member (2) is used for connecting with the other of the two transmission shafts. The second connecting member (2) is provided with a slot (201) at one end facing the first connecting member (1). The slot (201) includes two side walls (201a) distributed along the circumference of the second connecting member (2). The support wheel (3) extends between the two side walls (201a) of the slot (201). The support wheel (3) selectively abuts against the two side walls (201a) of the slot (201) and is used for rolling engagement with the abutting side walls (201a) in the radial direction of the second connecting member (2).

2. The coupling assembly according to claim 1, characterized in that: The first connecting member (1) comprises a connecting shaft (101), and the supporting wheel (3) is rotatably mounted on the connecting shaft (101).

3. The coupling assembly according to claim 2, characterized in that: It also comprises a baffle (6), the connecting shaft (101) is provided with a shaft shoulder, the baffle (6) is connected to the connecting shaft (101), there is a distance between the baffle (6) and the shaft shoulder, and the supporting wheel (3) is arranged between the shaft shoulder and the baffle (6).

4. The coupling assembly according to claim 3, characterized in that: The baffle (6) is connected to the connecting shaft (101) via a retaining spring or a threaded fastener (7).

5. The coupling assembly according to any one of claims 1 to 4, characterized in that: It also comprises a bearing (10), wherein the bearing (10) is mounted on the first connecting member (1), and the supporting wheel (3) is rotatably mounted on the outer side of the bearing (10).

6. The coupling assembly according to any one of claims 1 to 4, characterized in that: The outer wall of the support wheel (3) is arranged as a curved surface structure, and the support wheel (3) selectively abuts against and rolls with the two side walls (201a) of the slot (201) via the curved surface structure.

7. The coupling assembly according to any one of claims 1 to 4, characterized in that: The number of the support wheels (3) is set to be at least two, and the at least two support wheels (3) are distributed along the circumference of the first connecting member (1); the number of the slots (201) is the same as the number of the support wheels (3), and the slots (201) correspond to the support wheels (3) one by one.

8. The coupling assembly according to any one of claims 1 to 4, characterized in that: Both side walls (201a) of the slot (201) are provided with guiding inclined surfaces (201b) at one end close to the first connecting member (1), and along the direction from the second connecting member (2) to the first connecting member (1), the two guiding inclined surfaces (201b) are away from each other.

9. The coupling assembly according to any one of claims 1 to 4, characterized in that: The second connecting member (2) is configured as a hollow sleeve structure, the clamping groove (201) is arranged on the wall of the sleeve structure, and the clamping groove (201) passes through the wall of the sleeve structure.

10. A slitting device, characterized in that: It comprises a driving device (4), a knife shaft (5) and a coupling assembly as claimed in any one of claims 1 to 9, wherein the output shaft of the driving device (4) and the knife shaft (5) are respectively connected to the first connecting member (1) and the second connecting member (2).

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