Variable-pitch transfer mechanism for feeding pole group into groove

Abstract

The utility model provides a variable-pitch transfer mechanism for feeding a pole group into a groove, which comprises a transfer module, at least two guide rails arranged on the transfer module in parallel; the transfer module comprises two guide rails and a plurality of clamping units, the clamping units are distributed in the length direction of the guide rails, every two adjacent clamping units are installed on the two guide rails in a staggered mode, and the transfer module drives the clamping units to slide. The multiple clamping units are distributed on the two parallel guide rails in a staggered mode, multiple pole groups can be grabbed at the same time to enter grooves in batches, efficiency is improved, the distance between every two adjacent clamping units is variable, the total length can be shorter when the multiple clamping units are folded through staggered distribution, and the groove entering requirement is met; and when the clamping parts are opened, enough avoiding positions are provided, avoiding and the compactness of the whole structure are considered, and the technical problems that in the prior art, a material clamping and groove entering mechanism can only clamp a single pole group, and the efficiency is very low are solved.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a variable distance transfer mechanism for electrode group entry into the slot. Background Technology

[0002] In the battery manufacturing process, one step is to load the laminated electrode groups into a fixture, called "grooving," and then press the electrode groups from the fixture into the battery casing, called "casing." Each battery casing needs to hold multiple sets of electrode groups.

[0003] Chinese patent CN201310251832.6 discloses a clamping and slotting mechanism for a battery pack inserting machine, including a guide rail, a clamping arm, a first driving device for driving the clamping arm to rise and fall, and a second driving device for driving the clamping arm to move along the guide rail. The clamping and slotting mechanism also includes a push rod that can move along the guide rail. A first slider is provided on the guide rail. A third driving device for driving the push rod to rise and fall and a first guide groove connecting the push rod are provided on the first slider. A connecting plate connecting the middle section of the push rod and the third driving device is provided below the first slider. The push rod can completely push the electrode group transferred from the clamping arm to the casting and welding fixture into the fixture.

[0004] However, the existing clamping and feeding mechanism can usually only clamp a single electrode group, which is very inefficient. In addition, the structure of the two grippers opening and closing in parallel has a limited opening, which easily wears down the electrode plates, and it does not have the function of forming electrode tabs. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a variable-distance transfer mechanism for electrode group loading. By distributing several sets of gripping units staggered on two parallel guide rails, it can simultaneously grip multiple sets of electrodes to achieve batch loading, thereby improving efficiency. The spacing between adjacent sets of gripping units is variable, and the staggered distribution allows the total length of multiple gripping units to be shorter when they are closed, meeting the loading requirements. Furthermore, the gripping part has sufficient clearance when it is open, balancing clearance and overall structural compactness. This solves the technical problems of existing clamping and loading mechanisms, such as the fact that they can usually only grip a single electrode group and have very low efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A variable-distance transfer mechanism for pole group entry into a slot includes: a transfer module with at least two guide rails arranged in parallel on the transfer module; and a clamping unit, wherein several groups of clamping units are distributed along the length direction of the guide rails, and adjacent groups of clamping units are staggered and installed on the two guide rails, and the transfer module drives the clamping units to slide.

[0008] In one preferred embodiment, six sets of clamping units are provided, with three sets provided for each guide rail.

[0009] Preferably, the spacing between two adjacent sets of gripping units is variable.

[0010] Preferably, two guide rails are provided, and the clamping unit includes a clamping part. The clamping part of the clamping unit on one of the guide rails is connected to a transverse extension section so that the clamping part on this guide rail and the clamping part on the other guide rail are located on the same straight line.

[0011] Preferably, at least some of the clamping units in the plurality of groups have a rotation function.

[0012] Preferably, the clamping unit includes at least: a clamping drive unit, a linkage assembly, and a clamping part connected sequentially from top to bottom; it also includes a base, the clamping drive unit is mounted on the base and its bottom drive end passes through the base to be connected to the upper end of the linkage assembly, the linkage assembly has two lower ends symmetrically hinged to the base, the clamping part has two symmetrically arranged grippers, the two grippers are respectively connected to the two lower ends of the linkage assembly, and the clamping part is driven by the linkage assembly to rotate open or close.

[0013] Preferably, the device further includes a rotary drive unit, which is poweredly connected to the clamping drive unit to drive the clamping drive unit to rotate.

[0014] The clamping drive unit is a cylinder, and the rotation drive unit is a rotary motor.

[0015] Preferably, the linkage assembly includes: a connecting part connected to the driving end of the clamping drive part; two first linkages symmetrically hinged at the left and right ends of the connecting part; and two second linkages, the free ends of the two first linkages respectively hinged to one second linkage, and the free ends of the two second linkages symmetrically hinged to the base.

[0016] The lower end of the linkage assembly is the bottom free end of the second linkage, and the gripper is connected to the lower part of the free end of the second linkage that is hinged to the base.

[0017] Preferably, the extension section is configured to correspond one-to-one with the gripper, with one lateral end of the extension section connected to the upper end of the gripper and the other lateral end connected to the bottom end of the second connecting rod.

[0018] Preferably, a guide wheel is provided at the rear of the connecting part, and a guide groove is vertically opened on the base, with the guide wheel confined within the guide groove.

[0019] Preferably, the upper end of the gripping surface of the clamp is provided with a pressure block, and the two pressure blocks press the tabs at both ends of the electrode group towards the middle when the electrode group is clamped.

[0020] Preferably, the working surface of the pressure block used to extrude the tab is set as a slope surface, and the working surfaces of the two pressure blocks are in a figure-eight shape.

[0021] Preferably, the transfer module includes: a transfer seat, on the lower part of which the guide rail is mounted; and a transfer drive unit, on the upper part of which the transfer seat is mounted, the transfer drive unit being poweredly connected to each of the clamping units.

[0022] Preferably, the clamping units are connected in series via connecting rods.

[0023] The beneficial effects of this utility model are as follows:

[0024] (1) This utility model can simultaneously grab multiple groups of poles to achieve batch entry into the slot by distributing several sets of clamping units in a staggered manner on two parallel guide rails, thereby improving efficiency. The spacing between two adjacent sets of clamping units is variable. The staggered distribution allows the total length of multiple clamping units to be shorter when they are closed, meeting the slot entry requirements. Furthermore, the clamping part has sufficient clearance when it is open, taking into account both clearance and overall structural compactness.

[0025] (2) The clamping unit in this utility model drives the two clamps to rotate and open in a figure-eight shape through the linkage assembly. The opening is large, which avoids edge rubbing and wear, protects the electrode group, and has sufficient clamping force.

[0026] (3) The clamping unit of this utility model sets pressure blocks on the inner sides of the two clamps. During the clamping process of the electrode group, the electrode ears are pinched and bent towards the middle by the sloping working surface to concentrate them, ensuring that all electrode ears are effectively cast and welded in the future, avoiding the electrode ears on the side from being missed and falling off. Moreover, by pinching the electrode ears by pressing, the springback can be effectively avoided. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the misaligned distribution of the clamping units in this utility model;

[0029] Figure 3 This is a schematic diagram showing the distribution of two adjacent clamping units in this utility model;

[0030] Figure 4 This is a front view of the overall structure of this utility model;

[0031] Figure 5 This is a front view of the clamping unit in this utility model;

[0032] Figure 6 This is a schematic diagram of the clamping unit in this utility model. Figure 1 ;

[0033] Figure 7 This is a schematic diagram of the clamping unit in this utility model. Figure 2 ;

[0034] Figure 8 for Figure 7 Enlarged view of point A in the middle. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] Example 1

[0038] like Figure 1-2 As shown, a variable-distance transfer mechanism for pole group entry into a slot includes: a transfer module 1, on which at least two guide rails 11 are arranged in parallel; and a clamping unit 2, wherein several groups of clamping units 2 are distributed along the length direction of the guide rails 11, and adjacent groups of clamping units 2 are staggered and installed on the two guide rails 11, and the transfer module 1 drives the clamping unit 2 to slide.

[0039] In this embodiment, by distributing several sets of gripping units 2 in a staggered manner on two parallel guide rails 11, multiple sets of pole groups can be gripped simultaneously to achieve batch insertion into the slot, thereby improving efficiency. The spacing between two adjacent sets of gripping units 2 is variable. The staggered distribution allows the total length of multiple gripping units 2 to be shorter when they are closed, meeting the insertion requirements. Furthermore, the gripping part 25 has sufficient clearance when it is open, taking into account both clearance and overall structural compactness.

[0040] In a preferred embodiment, the clamping unit 2 is provided in 6 sets, and each guide rail 11 is provided with 3 sets.

[0041] In a preferred embodiment, two guide rails 11 are provided, and each guide rail 11 is provided with three sets of clamping units 2, for a total of six sets of clamping units 2. The six sets of clamping units 2 are arranged in a single row of 1x6 linear distribution, so as to clamp and load a row of six electrode groups in one operation, which is suitable for 1x6 specification batteries.

[0042] Because multiple clamping units have length requirements when closing and entering the slot, if the length is too long, they will tip over during entry. However, current technologies cannot accommodate six groups of poles in a row and require two separate actions. Unlike conventional cylinder clamping methods in existing technologies (which have insufficient clamping force, limited opening, and large mechanisms, causing interference between adjacent clamping units and affecting entry), this embodiment uses a variable-distance transfer mechanism for pole group entry. This mechanism includes avoidance positioning and mirror-misaligned positioning of adjacent clamping units 2. The parallel arrangement of multiple clamping units 2 ensures mutual avoidance and a compact structure, preventing the total length from being too long and affecting the entry quality. This meets the total length requirement for entry and enables the simultaneous gripping of multiple pole groups (especially six groups) with a single action for batch entry. Furthermore, the clamping force of the clamping unit 2 is sufficient, and when opened, it forms a V-shape, preventing edge wear and protecting the pole groups.

[0043] Preferably, the spacing between two adjacent sets of clamping units 2 is variable, so that the clamps 251 of multiple sets of clamping units 2 can adjust the spacing between them before clamping the electrode group to the electrode group in the slotting fixture to adapt to the electrode group to complete one slotting action or to adapt to one slotting action of different battery models.

[0044] As a preferred option, such as Figure 3 As shown, the guide rail 11 is provided with two rails, and the clamping unit 2 includes a clamping part 25. The clamping part 25 of the clamping unit 2 on one of the guide rails 11 is connected to a transverse extension section 27 so that the clamping part 25 on the guide rail 11 and the clamping part 25 on the other guide rail 11 are located on the same straight line.

[0045] In this embodiment, by distributing several sets of gripping units 2 in a staggered manner on two parallel guide rails 11, multiple sets of pole groups can be gripped simultaneously to achieve batch insertion into the slot, thereby improving efficiency. The staggered distribution allows the total length of multiple gripping units 2 to be shorter when they are closed, meeting the insertion requirements. Furthermore, the gripping part has sufficient clearance when it is open, taking into account both clearance and overall structural compactness.

[0046] In embodiments where a rotation drive unit 21 is provided, rotation can cause the clamping portion 25 on the guide rail 11 with the extension 27 to be misaligned with the clamping portion 25 on the other guide rail 11.

[0047] Preferably, at least some of the clamping units 2 in the plurality of groups have a rotation function.

[0048] The fact that at least some of the clamping units 2 in this application have a rotation function can be understood as follows: in some specific application scenarios or when producing different types of batteries, for example, when the pole group transfer and pitch mechanism is set with 6 sets of clamping units 2, the 1st / 3rd / 5th or the 2nd / 4th / 6th clamping units 2 can be set to have a rotation function to produce, for example, a 1*6 type of battery. Alternatively, the 1st, 2nd, 3rd or the 4th, 5th or 6th clamping units can be set to have rotational kinetic energy, or all 6 sets of clamping units 2 can be set to have a rotation function to produce, for example, a 2*3 type of battery.

[0049] The variable-distance transfer mechanism for electrode group entry in this embodiment is suitable for 1x6 or 2x3 batteries. For 1x6 batteries: 6 clamping units 2 simultaneously clamp 6 electrode groups. During the transfer to the electrode group entry fixture, the 1st / 3rd / 5th or the 2nd / 4th / 6th clamping unit 2 rotates the electrode group 180°, and then the 6 electrode groups simultaneously enter the electrode group entry fixture. For 2*3 specification batteries: 6 clamping units 2 simultaneously clamp 6 groups of electrodes. During the transfer to the electrode group placement fixture, the 1st / 2nd / 3rd or 4th / 5th / 6th clamping unit 2 rotates 90° clockwise with the electrode group, and then these 3 groups of electrodes simultaneously enter the electrode group placement fixture. Then the remaining 4th / 5th / 6th or 1st / 2nd / 3rd clamping unit 2 rotates 90° counterclockwise with the electrode group, and then the clamping unit 2 moves along the guide rail 11 so that the remaining three groups of electrodes are directly facing the electrode group placement fixture. Then these 3 groups of electrodes simultaneously enter the electrode group placement fixture, meeting the requirements of 2*3 battery products.

[0050] As a preferred option, such as Figure 1 As shown, the transfer module 1 includes: a transfer seat 12, on the lower part of which the guide rail 11 is mounted; and a transfer drive unit 13, on the upper part of which the transfer seat 12 is mounted, and the transfer drive unit 13 is poweredly connected to each of the clamping units 2.

[0051] Preferably, each of the clamping units 2 is connected in series via a connecting rod 20.

[0052] Example 2

[0053] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:

[0054] As a preferred option, such as Figure 4 As shown, the clamping unit 2 includes at least: a clamping drive unit 22, a connecting rod assembly 24, and a clamping part 25 connected sequentially from top to bottom; it also includes a base 23, the clamping drive unit 22 is mounted on the base 23 and its bottom drive end passes through the base 23 to be connected to the upper end of the connecting rod assembly 24, the connecting rod assembly 24 has two symmetrically hinged lower ends on the base 23, and the clamping part 25 has two symmetrically arranged grippers 251, the two grippers 251 are respectively connected to the two lower ends of the connecting rod assembly 24, and the clamping part 25 is driven by the connecting rod assembly 24 to rotate open or close.

[0055] In this embodiment, the two grippers 251 are rotated and opened into a figure-eight shape by the linkage assembly 24. The large opening avoids edge rubbing and wear, protects the electrode group, and has sufficient clamping force.

[0056] In embodiments where the rotation drive unit 21 is not provided, the top of the clamping drive unit 22 is slidably mounted on the guide rail 11 via a slider.

[0057] Preferably, the device also includes a rotation drive unit 21, which is poweredly connected to the clamping drive unit 22 to drive the clamping drive unit 22 to rotate.

[0058] In the embodiment where a rotary drive unit 21 is provided, the top of the rotary drive unit 21 is slidably mounted on the guide rail 11 via a slider, and its bottom rotary drive end is connected to the clamping drive unit 22.

[0059] In a preferred embodiment, the clamping drive unit 22 is a cylinder, and the rotation drive unit 21 is a rotary motor.

[0060] As a preferred option, such as Figure 5As shown, the linkage assembly 24 includes: a connecting part 241, which is connected to the driving end of the clamping drive part 22; a first link 242, two first links 242 are symmetrically hinged to the left and right ends of the connecting part 241; and a second link 243, the free ends of the two first links 242 are respectively hinged to a second link 243, and the free ends of the two second links 243 are symmetrically hinged to the base 23.

[0061] Preferably, the lower end of the connecting rod assembly 24 is the bottom free end of the second connecting rod 243, and the lower part of the free end of the second connecting rod 243 that is hinged to the base 23 is connected to the gripper 251.

[0062] As an explanation, the extension segment 27 is provided in a one-to-one correspondence with the gripper 251. One lateral end of the extension segment 27 is connected to the upper end of the gripper 251, and the other lateral end is connected to the bottom end of the second connecting rod 243.

[0063] As a preferred option, such as Figure 6 As shown, a guide wheel 244 is provided at the rear of the connecting part 241, and a guide groove 245 is vertically provided on the base 23, with the guide wheel 244 confined within the guide groove 245.

[0064] In this embodiment, by setting guide wheels 244 and guide grooves 245, the lifting and lowering movement of the connecting part 241 is guided, making it more stable.

[0065] Example 3

[0066] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:

[0067] As a preferred option, such as Figure 5 As shown, the clamping surface of the clamping hand 251 is provided with a pressure block 26. When the two pressure blocks 26 are clamping the electrode group, they squeeze the electrode tabs at both ends of the electrode group towards the middle.

[0068] As a preferred option, such as Figure 8 As shown, the working surface 260 of the pressure block 26 used to compress the electrode tab is set as a slope surface, and the working surfaces 260 of the two pressure blocks 26 are in the shape of an "eight".

[0069] In this embodiment, the clamping unit sets pressure blocks on the inner sides of the two grippers. During the clamping process of the electrode group, the electrode tabs are bent and concentrated in the middle by the sloping working surface, which ensures that all electrode tabs are effectively cast and welded in the future, and avoids the electrode tabs on the side from being missed or falling off. Moreover, by clamping the electrode tabs by pressing, springback can be effectively avoided.

[0070] It is worth noting that the variable pitch slotting mechanism in this utility model only requires one action to make the avoidance position and the mirror misalignment of the adjacent clamping units 2. Since there are length requirements when the variable pitch closing slotting is made, if the length is too long, it will fall over when entering the slot. The existing technology cannot make it possible to insert 6 groups of poles in one row and requires two actions. This utility model takes into account the mutual avoidance and the compactness of the structure between multiple groups of clamping units 2 arranged side by side, so that the total length is not too long and will affect the quality of slotting.

[0071] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A variable-distance transfer mechanism for pole group entry slots, characterized in that, include: Transfer module (1), on which at least two guide rails (11) are arranged in parallel. as well as The clamping unit (2) is distributed in several groups along the length direction of the guide rail (11), and two adjacent clamping units (2) are installed on the two guide rails (11) in a staggered manner. The transfer module (1) drives the clamping unit (2) to slide.

2. The variable-distance transfer mechanism for pole group entry slots according to claim 1, characterized in that, The spacing between two adjacent sets of clamping units (2) is variable.

3. The variable-distance transfer mechanism for pole group entry slots according to claim 1, characterized in that, Two guide rails (11) are provided, and the clamping unit (2) includes a clamping part (25). The clamping part (25) of the clamping unit (2) on one of the guide rails (11) is connected to a transverse extension section (27) so that the clamping part (25) on the guide rail (11) and the clamping part (25) on the other guide rail (11) are located on the same straight line.

4. The variable-distance transfer mechanism for pole group entry slot according to claim 3, characterized in that, At least some of the clamping units (2) in the group of clamping units (2) have a rotation function.

5. The variable-distance transfer mechanism for pole group entry slot according to claim 1, characterized in that, The clamping unit (2) includes at least: The clamping drive unit (22), the linkage assembly (24), and the clamping unit (25) are connected sequentially from top to bottom. It also includes a base (23), the clamping drive part (22) is mounted on the base (23) and its bottom drive end passes through the base (23) to be connected to the upper end of the linkage assembly (24), the linkage assembly (24) has two lower ends symmetrically hinged to the base (23), the clamping part (25) has two symmetrically arranged grippers (251), the two grippers (251) are respectively connected to the two lower ends of the linkage assembly (24), and the clamping part (25) is driven by the linkage assembly (24) to rotate open or close.

6. A variable-distance transfer mechanism for pole group entry slots according to claim 5, characterized in that, It also includes a rotation drive unit (21), which is poweredly connected to the clamping drive unit (22) to drive the clamping drive unit (22) to rotate.

7. A variable-distance transfer mechanism for pole group entry into a slot according to claim 5, characterized in that, The link assembly (24) includes: A connecting part (241) is connected to the driving end of the clamping drive part (22); The first link (242) is symmetrically hinged at both ends of the connecting part (241), and two first links (242) are provided; and The second link (243) is connected to the free ends of the two first links (242) respectively, and the free ends of the two second links (243) are symmetrically hinged to the base (23).

8. A variable-distance transfer mechanism for pole group entry slots according to claim 5, characterized in that, The clamping surface of the clamp (251) is provided with a pressure block (26), and the two pressure blocks (26) squeeze the electrode tabs at both ends of the electrode group towards the middle when the electrode group is clamped.

9. A variable-distance transfer mechanism for pole group entry slots according to claim 8, characterized in that, The working surface (260) of the pressing block (26) for extruding the tab is set as a slope surface, and the working surfaces (260) of the two pressing blocks (26) are in the shape of an "eight".

10. A variable-distance transfer mechanism for pole group entry slots according to claim 1, characterized in that, The transfer module (1) includes: A sliding seat (12), the lower part of which is fitted with the guide rail (11); and The transfer drive unit (13) is mounted on the upper part of the transfer seat (12) and is poweredly connected to each of the clamping units (2).

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