Calibrating and rounding mechanism for inner supporting rod

Abstract

The utility model relates to an inner supporting rod calibrating and rounding mechanism which comprises a plurality of inner supporting rods, a fixing piece and an adjusting piece, the plurality of inner supporting rods are all installed on the fixing piece and distributed in a circumferential mode, and the adjusting piece is used for driving the plurality of inner supporting rods to move on the fixing piece so as to adjust the diameter of the circumference formed by the plurality of inner supporting rods. According to the inner supporting rod calibrating and rounding mechanism, when a cylindrical battery steel shell is shaped, the to-be-shaped steel shell is arranged outside the inner supporting rods distributed in the circumferential direction in a sleeving mode, then the diameter of the circumference where the inner supporting rods are located is adjusted through the adjusting piece according to the inner diameter of the steel shell, and the inner supporting rods are all in contact with the inner wall of the steel shell; therefore, circumferential uniform force is applied to the steel shell in the steel shell so as to calibrate and round the steel shell, the shaping effect on the steel shell is good, the structure is simple, the occupied space is small, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an inner support rod calibration full circle mechanism. Background Art

[0002] Cylindrical batteries are a commonly used type of battery, which can be seen in people's daily life and industrial production. For example, cylindrical batteries are needed in remote controls, clocks, toys and various electronic digital products in daily life. In industrial production, cylindrical batteries are also used for assembly in power battery packs. The structure of a cylindrical battery generally includes a battery shell, a battery core disposed in the shell, a coil sheet disposed at both ends of the core, and a cover plate and conductive terminals sealed at both ends of the shell.

[0003] The processing process of cylindrical batteries is as follows: the positive and negative electrode sheets and the electrode separators between the positive and negative electrode sheets are formed into a stack and then wound to form a cylindrical shape, and then the electrolyte is added to form a roll core structure, and then the positive and negative electrode ears at both ends of the roll core are bent, and then the roll original sheet is set on the ear, and the battery roll core with an insulating sheet is loaded into the battery shell, and finally the battery cover and conductive terminals are welded and the battery roll core is sealed. In the prior art, in order to improve the processing efficiency of cylindrical batteries, an automated battery production line is used. However, the cylindrical battery steel shell is compressed during operation, which causes deformation. The deformed steel shell is easy to scratch the roll core after the roll core is put into the shell, and it is easy to cause difficulty in packing. Therefore, the steel shell needs to be pre-shaped before the battery core is put into the shell to ensure that the cylindrical battery is made without scratches on the surface of the battery core, and the battery core is compressed, and the circumference of the battery shell is not enough to affect the peripheral welding and collector plate welding. The traditional cylindrical battery steel shell shaping mechanism has a complex structure, cannot form a uniform direction of force around the steel shell, and the shaping effect is poor. Utility Model Content

[0004] Based on this, it is necessary to address the technical problems that the current cylindrical battery steel shell shaping mechanism has a complex structure, cannot form a force in a uniform direction around the steel shell, and has a poor shaping effect. The utility model provides an internal support rod calibration and rounding mechanism.

[0005] The utility model proposes an internal support rod calibration full circle mechanism, which includes multiple internal support rods, a fixing part and an adjusting part. The multiple internal support rods are all installed on the fixing part and the multiple internal support rods are distributed in a circle. The adjusting part is used to drive the multiple internal support rods to move on the fixing part to adjust the diameter of the circle formed by the multiple internal support rods.

[0006] When the utility model is shaping the cylindrical battery steel shell, the steel shell to be shaped is sleeved outside a plurality of inner support rods distributed in a circle, and then the diameter of the circle where the plurality of inner support rods are located is adjusted through an adjusting piece according to the inner diameter of the steel shell, so that the plurality of inner support rods are all in contact with the inner wall of the steel shell, thereby applying a circumferentially uniform force to the steel shell inside the steel shell to calibrate the steel shell into a full circle, the steel shell shaping effect is good, the structure is simple, and the use is convenient.

[0007] As a further improvement of the above scheme of the utility model, a plurality of circumferentially distributed slide grooves are provided on the fixing member, the extension direction of the slide grooves is consistent with the radial direction of the circle where they are located, and one end of the plurality of inner support rods are respectively slidably connected with the plurality of slide grooves.

[0008] As a further improvement of the above solution of the utility model, the outer side surface of the inner support rod is an arc-shaped surface.

[0009] As a further improvement of the above solution of the utility model, a protective layer is provided on the outer side surface of the inner support rod.

[0010] As a further improvement of the above solution of the utility model, the protective layer is a Teflon layer.

[0011] As a further improvement of the above-mentioned scheme of the utility model, the adjusting member includes a sleeve and a lifting unit, the sleeve is arranged between multiple inner support rods and the central axis of the sleeve coincides with the central axis of the circle where the multiple inner support rods are located, a plurality of connecting rods are hinged on the inner support rods and one end of the connecting rod away from the inner support rods is hinged to the sleeve; the lifting unit is used to carry the upper sleeve to move up and down in the vertical direction to drive the multiple inner support rods to move on the fixing member.

[0012] As a further improvement of the above solution of the utility model, the lifting unit includes a screw rod and a driving mechanism, a sleeve is sleeved on the screw rod and the sleeve is threadedly connected to the screw rod, and the driving mechanism is used to drive the screw rod to rotate.

[0013] As a further improvement of the above solution of the utility model, a through hole coaxially arranged with the sleeve is penetrated through the fixing member, and the diameter of the through hole is larger than the outer diameter of the sleeve.

[0014] As a further improvement of the above scheme of the utility model, the driving mechanism includes a servo motor, a driving wheel, a driven wheel and a synchronous belt. The driving wheel is installed on the output shaft of the servo motor, the driven wheel is fixedly connected to one end of the screw rod, and the synchronous belt is mounted on the driving wheel and the driven wheel.

[0015] As a further improvement of the above solution of the utility model, the number of the inner support rods is set to 4.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model provides an inner support rod calibration and rounding mechanism. When a cylindrical battery steel shell is reshaped, the steel shell to be shaped is sleeved outside a plurality of inner support rods distributed in a circle, and then the diameter of the circle where the plurality of inner support rods are located is adjusted through an adjusting piece according to the inner diameter of the steel shell, so that the plurality of inner support rods are in contact with the inner wall of the steel shell, thereby applying a circumferentially uniform force to the steel shell inside the steel shell to calibrate the steel shell into a circle, which has a good shaping effect on the steel shell, a simple structure, small space occupation, and is easy to use.

[0018] 2. The utility model provides an inner support rod calibration full circle mechanism, in which a protective layer is arranged on the side of the inner support rod in contact with the inner wall of the steel shell to avoid hard contact with the steel shell and damage to the nickel-plated layer on the surface of the steel shell.

[0019] 3. The utility model provides an internal support rod calibration full circle mechanism using a servo motor torque mode, which can effectively control the moving distance of the internal support rod, making the shaping force controllable, and avoiding excessive pressure on the steel shell by the internal support rod, causing damage to the steel shell. At the same time, the screw rod converts the rotational motion of the motor into the linear movement of the internal support rod, and the torque of the servo motor is amplified by the screw rod, so that a small-power servo motor can also exert a sufficiently large force, thereby reducing the manufacturing cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of an inner support rod calibration full circle mechanism proposed in an embodiment of the utility model;

[0021] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 3 A working principle diagram of an inner support rod calibration full circle mechanism proposed in an embodiment of the utility model;

[0023] Figure 4 for Figure 3 Front view of.

[0024] Figure numerals: 1. inner support rod; 2. fixing piece; 3. slide groove; 4. protective layer; 5. sleeve; 6. connecting rod; 7. screw rod; 8. servo motor; 9. driving wheel; 10. driven wheel; 11. synchronous belt; 12. steel shell. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0026] This embodiment aims to solve the technical problems that the current cylindrical battery steel shell shaping mechanism has a complex structure, cannot form a uniform force around the steel shell 12, and has a poor shaping effect. The utility model provides an internal support rod calibration and full circle mechanism, which applies a circumferentially uniform force to the steel shell 12 inside the steel shell 12 to calibrate the steel shell 12 into a full circle. The shaping effect of the steel shell 12 is good, the structure is simple, and it is easy to use.

[0027] Reference Figure 1 , Figure 2 The inner support rod calibration full circle mechanism provided in this embodiment includes four inner support rods 1, a fixing part 2 and an adjusting part.

[0028] The four inner support rods 1 are evenly distributed in a circle. By adjusting the diameter of the circle where the four inner support rods 1 are located, steel shells 12 of different sizes can be matched, so that the steel shells 12 of different sizes can be calibrated into a full circle. In this embodiment, the number of inner support rods 1 is four. Of course, in other embodiments, as long as the calibration requirement of the steel shell 12 is met, the number of inner support rods 1 can also be 3, 5 or 6. Since the inner wall of the steel shell 12 is a curved surface, in order to improve the shaping effect of the steel shell 12, in this embodiment, the outer side surface of each inner support rod 1 is set to be an arc surface, which can increase the contact area between the inner support rod 1 and the inner wall of the steel shell 12, thereby improving the shaping effect. Furthermore, in order to avoid damaging the nickel-plated layer on the surface of the steel shell 12 during the shaping process, a protective layer 4 is also provided on the outer side surface of the inner support rod 1 to avoid hard contact with the steel shell 12 and damage to the nickel-plated layer on the surface of the steel shell 12. In this embodiment, the protective layer 4 is preferably a Teflon layer. Teflon material has a low friction coefficient characteristic. Using Teflon material as the protective layer 4 can reduce the friction between the protective layer 4 and the inner wall of the steel shell 12, and effectively prevent the inner support rod 1 from damaging the nickel-plated layer on the inner wall of the steel shell 12.

[0029] The fixing member 2 is used to be fixed on the external equipment, and the four inner support rods 1 are installed on the fixing member 2. In this embodiment, the fixing member 2 can be made of a plate. In order to simplify the overall structure, a cross-shaped plate is preferably used as the fixing member 2 in this embodiment. Four slide grooves 3 are provided on the cross-shaped fixing member 2. The extension direction of the slide grooves 3 is consistent with the radial direction of the circumference of the four inner support rods 1. The bottoms of the four inner support rods 1 are respectively slidably connected in the four slide grooves 3. Of course, in other embodiments, four slide rails can also be provided on the fixing member 2, and the bottoms of the four inner support rods 1 are respectively connected to the four slide rails through sliders. In this embodiment, the fixing member 2 is located in the middle position of the four slide grooves 3 and a through hole is also provided through it, and the central axis of the through hole coincides with the central axis of the circumference of the four inner support rods 1.

[0030] The adjusting member drives the four inner support rods 1 to move on the fixing member 2 to adjust the diameter of the circle formed by the four inner support rods 1, so as to match the shaping work of the steel shells 12 of different sizes. In this embodiment, the adjusting member includes a sleeve 5 and a lifting unit, the lifting unit includes a screw 7 and a driving mechanism, and the driving mechanism includes a servo motor 8, a driving wheel 9, a driven wheel 10 and a synchronous belt 11. Specifically, the sleeve 5 is arranged between the four inner support rods 1 and the sleeve 5 is coaxially arranged with the through hole, the bottom of the sleeve 5 can freely pass through the through hole, and a plurality of connecting rods 6 are hinged on the inner support rod 1, and the end of the connecting rod 6 away from the inner support rod 1 is hinged to the sleeve 5. The top end of the screw rod 7 passes through the through hole and the sleeve 5 in sequence, and the screw rod 7 is threadedly connected to the sleeve 5, the screw rod 7 is clearance-matched with the fixing part 2, the screw rod 7 fixes the driven wheel 10, the driving wheel 9 is fixed on the output shaft of the servo motor 8, and the synchronous belt 11 is sleeved on the driving wheel 9 and the driven wheel 10. In this way, when the servo motor 8 is started, it drives the driving wheel 9 to rotate, and the driving wheel 9 drives the driven wheel 10 to rotate synchronously through the synchronous belt 11, and the driven wheel 10 drives the screw rod 7 to rotate. The rotation of the screw rod 7 can drive the sleeve 5 to move in the vertical direction. When the sleeve 5 moves upward, the sleeve 5 pushes the inner support rod 1 to move away from the sleeve 5 through the connecting rod 6 to increase the diameter of the circle where the four inner support rods 1 are located. When the sleeve 5 moves downward, the sleeve 5 pulls the inner support rod 1 through the connecting rod 6 to move in the direction close to the sleeve 5 to reduce the diameter of the circle where the four inner support rods 1 are located. Of course, in other embodiments, the adjusting member may also adopt other existing known structures that can enable the four inner support rods 1 to move on the fixing member 2 to adjust the diameter of the circle formed by the four inner support rods 1 .

[0031] Combination Figure 3 , Figure 4 Through the above structural arrangement, when the cylindrical battery steel shell 12 is shaped in this embodiment, the steel shell 12 to be shaped is sleeved outside a plurality of inner support rods 1 distributed in a circle, the servo motor 8 is started to drive the driving wheel 9 to rotate, the driving wheel 9 drives the driven wheel 10 to rotate synchronously through the synchronous belt 11, the driven wheel 10 drives the screw rod 7 to rotate, the screw rod 7 rotates and drives the sleeve 5 to move upward, the sleeve 5 pushes the inner support rod 1 to move away from the sleeve 5 through the connecting rod 6 until the four inner support rods 1 contact the inner wall of the steel shell 12, thereby applying a circumferentially uniform force to the steel shell 12 inside the steel shell 12 to calibrate the steel shell 12 into a full circle; after the shaping is completed, the servo motor 8 rotates in the opposite direction, thereby driving the sleeve 5 to move downward, and the sleeve pulls the inner support rod 1 through the connecting rod 6 to move in the direction close to the sleeve 5 to separate from the steel shell 12, and the shaped steel shell 12 can be directly taken away.

[0032] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0034] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An internal support rod calibration full circle mechanism, characterized in that: It comprises a plurality of inner support rods (1), a fixing member (2) and an adjusting member, wherein the plurality of inner support rods (1) are all mounted on the fixing member (2) and the plurality of inner support rods (1) are distributed in a circular pattern, and the adjusting member is used to drive the plurality of inner support rods (1) to move on the fixing member (2) so as to adjust the diameter of the circle formed by the plurality of inner support rods (1).

2. The inner support rod calibration full circle mechanism according to claim 1, characterized in that: The fixing member (2) is provided with a plurality of slide grooves (3) distributed in a circumference, the extension direction of the slide grooves (3) is consistent with the radial direction of the circumference where the slide grooves (3) are located, and one end of the plurality of inner support rods (1) is respectively connected to the plurality of slide grooves (3) in a sliding manner.

3. The inner support rod calibration full circle mechanism according to claim 1, characterized in that: The outer side surface of the inner support rod (1) is an arc-shaped surface.

4. The inner support rod calibration full circle mechanism according to claim 1, characterized in that: A protective layer (4) is provided on the outer side surface of the inner support rod (1).

5. The inner support rod calibration full circle mechanism according to claim 4, characterized in that: The protective layer (4) is a Teflon layer.

6. The inner support rod calibration full circle mechanism according to claim 2, characterized in that: The adjusting member comprises a sleeve (5) and a lifting unit, wherein the sleeve (5) is arranged between a plurality of inner support rods (1) and the central axis of the sleeve (5) coincides with the central axis of the circle on which the plurality of inner support rods (1) are located, a plurality of connecting rods (6) are hingedly connected to the inner support rods (1) and one end of the connecting rod (6) away from the inner support rods (1) is hingedly connected to the sleeve (5); the lifting unit is used to carry the sleeve (5) to move up and down in the vertical direction so as to drive the plurality of inner support rods (1) to move on the fixing member (2).

7. The inner support rod calibration full circle mechanism according to claim 6, characterized in that: The lifting unit comprises a screw rod (7) and a driving mechanism, wherein a sleeve (5) is sleeved on the screw rod (7) and the sleeve (5) and the screw rod (7) are threadedly connected, and the driving mechanism is used to drive the screw rod (7) to rotate.

8. The inner support rod calibration full circle mechanism according to claim 7, characterized in that: A through hole is formed through the fixing member (2) and is coaxially arranged with the sleeve (5). The diameter of the through hole is larger than the outer diameter of the sleeve (5).

9. The inner support rod calibration full circle mechanism according to claim 7, characterized in that: The driving mechanism comprises a servo motor (8), a driving wheel (9), a driven wheel (10) and a synchronous belt (11); the driving wheel (9) is mounted on the output shaft of the servo motor (8); the driven wheel (10) is fixedly connected to one end of the screw rod (7); and the synchronous belt (11) is sleeved on the driving wheel (9) and the driven wheel (10).

10. The inner support rod calibration full circle mechanism according to claim 1, characterized in that: The number of the inner support rods (1) is 4.

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