Heat-shrinkable sleeve packaging equipment for cylindrical battery with protection plate

Abstract

The invention provides heat-shrinkable tube wrapping equipment for a cylindrical battery with a protective plate, which is technically characterized by comprising a conveying device for conveying the battery in a stepping manner and positioning the battery, a gummed paper sticking device for covering the protective plate with gummed paper and sticking and fixing the gummed paper on the surface of the battery, and a tube sleeving device for sleeving a heat-shrinkable tube on the battery, the pre-shaping device is used for pre-shrinking two ends of the heat-shrinkable sleeve so as to position the battery; and the heating device is used for integrally heating the pre-shaped battery. The gummed paper pasting device can ensure that a protection plate is accurately fixed on the surface of the battery by gummed paper and is convenient to sleeve a heat-shrinkable sleeve subsequently, the axial position of the battery in the heat-shrinkable sleeve is accurate through the pre-shaping device, and the position of the battery in the heat-shrinkable sleeve is fixed, so that the subsequent complete heat-shrinkable coating quality can be ensured; according to the equipment, automatic production can be realized, and the production efficiency and the product quality are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing equipment, and in particular to a heat shrink tubing device for cylindrical batteries with protection plates. Background Art

[0002] Existing cylindrical lithium batteries (18650 lithium batteries) are usually equipped with a protection plate to prevent damage to the battery due to overcharging, overcurrent, etc., and a heat shrink tube is also required on the outside to improve safety.

[0003] Since the protection plate of this type of battery is connected to the battery through wires, the protection plate is in an automatic shaking state. When applying the heat shrink tubing, for safety reasons, the fixing position of the protection plate and the position of the heat shrink tubing wrapped around both ends of the battery are required to be high. In addition, the diameter of this type of cylindrical battery is small, which makes the corresponding internal space of the tubing small. Traditional heat shrink tubing equipment is difficult to meet the requirements, and manual operation is inefficient and unstable. Therefore, a special equipment is needed to achieve automated production. Summary of the invention

[0004] The purpose of the present invention is to provide an automated device capable of applying a heat shrink tubing to a cylindrical battery with a protection plate.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A heat shrink tubing device for cylindrical batteries with protection plates, comprising:

[0007] The conveying device is used for conveying and positioning the battery in a stepwise manner, and comprises two parallel supporting rods, a lifting rod arranged in parallel between the two supporting rods, a lifting device for driving the lifting rod to rise and fall, and a pneumatic stepping mechanism for driving the lifting rod to move back and forth in a stepwise manner along its length direction; the supporting rod and the lifting rod both have concave arc-shaped positioning grooves corresponding to each station and adapted to the curvature of the battery;

[0008] The adhesive tape device is used to cover the protective plate with adhesive tape and fix it to the surface of the battery; the adhesive tape device is also provided with a first clamping claw cylinder for clamping and positioning the protective plate, and the first clamping claw cylinder is arranged at the free end of the protective plate of the battery;

[0009] A sleeve device, used for sleeve-fitting a heat shrink tube on a battery, comprising a sleeve reel for feeding, a sleeve support device for stretching the sleeve and sleeved it into the battery, and a tube cutting assembly for cutting the heat shrink tube after sleeve-fitting is completed; the sleeve support device comprises a circular support rod coaxially arranged at one end of the battery, two groups of first clamping rollers distributed at intervals along the length direction of the support rod for rolling and clamping the support rod, and two groups of second clamping rollers distributed at intervals for rolling and clamping the support rod, the axial directions of the first clamping rollers and the second clamping rollers are perpendicular to each other, and the first clamping rollers and the second clamping rollers have at least one group of driving rollers; wherein, corresponding to each side roller shaft of each group of the first clamping rollers, the support rod is provided with an installation groove along the axial direction, two groups of rollers are rotatably installed in the installation groove by means of a pin shaft, and the two groups of rollers are arranged at intervals along the length direction of the support rod, and the roller shaft of each side of the first clamping rollers is installed between the two groups of rollers;

[0010] A pre-forming device, used for pre-shrinking the two ends of the heat shrinkable sleeve to position the battery, comprising a driven rod coaxially rotatably mounted on one end of the battery, an active rod coaxially arranged on the other end of the battery, a motor driving the active rod to rotate around the axis, a linear device driving the active rod and / or the driven rod to reciprocate along the axial direction, and a heating assembly close to the two ends of the battery;

[0011] And a heating device is used to heat the battery after the predetermined shape as a whole, so that the heat shrinkable sleeve shrinks and covers the outside of the battery.

[0012] A preferred solution is that the adhesive tape device includes an adhesive tape reel for feeding, a positioning clamp for the adhesive tape to pass through, a movable clamp assembly for clamping the tail end of the adhesive tape and dragging it horizontally, a paper cutting assembly for cutting the adhesive tape, and a adhesive tape robot for adsorbing the adhesive tape and applying it to the battery surface.

[0013] In a preferred embodiment, the glue applying robot includes a horizontal mounting arm, a rotary cylinder driving the mounting arm to rotate horizontally around a midpoint, two sets of vertical cylinders fixed at both ends of the mounting arm, and a vacuum suction cup assembly driven by the vertical cylinders.

[0014] A preferred solution is that a glue paper pressing device is further provided behind the glue paper sticking device, and the glue paper pressing device includes a first downward pressing cylinder and a first pressing block driven by the first downward pressing cylinder, the bottom surface of the first pressing block has an arc groove with a cross-section adapted to the curvature of the battery, and the top of the arc groove is also provided with a square groove for accommodating a protective plate.

[0015] In a preferred embodiment, the sleeve device further comprises a baffle plate provided at the other end of the battery relative to the support rod, and a sleeve pressing device provided above the battery, wherein the sleeve pressing device comprises a second downward pressing cylinder and a second pressing block driven by the second downward pressing cylinder.

[0016] A preferred solution is that a material transfer robot is provided between the pre-forming device and the heating device, and the material transfer robot comprises a clamping cylinder for clamping the battery, and an XZ-axis translation platform for driving the clamping cylinder to lift and translate; the heating component is installed on both sides of the clamping cylinder.

[0017] The beneficial effects of the present invention are as follows: the conveying device feeds materials in steps through the lifting rod, and a positioning groove is provided, so that the battery maintains a positioning direction unchanged during the conveyance along the workstation; the adhesive tape device and the first clamping claw cylinder can ensure that the protective plate is accurately fixed to the battery surface by the adhesive tape, and facilitate the subsequent insertion of the heat shrink sleeve; the heat shrink sleeve is then sleeved on the outside of the battery through the sleeve device, and the sleeve device can fully expand the heat shrink sleeve without deformation, thereby ensuring the smoothness of insertion; finally, the pre-forming device is used to make the axial position of the battery in the heat shrink sleeve accurate, and after the two ends of the heat shrink sleeve are preheated and deformed, the position of the battery in the heat shrink sleeve can be fixed, thereby ensuring the quality of subsequent complete heat shrink coating; the equipment can realize automated production and significantly improve production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the structure of the battery to be processed;

[0020] Figure 2 It is a schematic diagram of the overall structure of the device in the embodiment;

[0021] Figure 3 It is a structural schematic diagram of the conveying device in the embodiment;

[0022] Figure 4 It is a structural schematic diagram of the casing device in the embodiment;

[0023] Figure 5 It is a structural schematic diagram of the support rod in the embodiment;

[0024] Figure 6 It is a structural schematic diagram of the pre-forming device and the material transfer robot in the embodiment;

[0025] Figure 7 It is a structural schematic diagram of the adhesive tape sticking device in the embodiment;

[0026] Figure 8 Schematic diagram of the structure of the glue paper laminating device in the embodiment. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] It should be noted that the words indicating directions in the present application document, such as top surface, bottom surface, vertical direction, etc., are only for the convenience of a more intuitive description of the structure in combination with the drawings, and are not intended to limit the product structure.

[0029] refer to Figures 1 to 8 The heat shrink sleeve wrapping device for cylindrical batteries with protective plates shown in the figure comprises a conveying device 1 for conveying and positioning batteries 100 in steps, comprising two parallel supporting rods 11, a lifting rod 12 arranged in parallel between the two supporting rods 11, a lifting device 13 for driving the lifting rod 12 to rise and fall, and a pneumatic stepping mechanism 14 for driving the lifting rod 12 to move back and forth in steps along its length direction; the supporting rod 11 and the lifting rod 12 both have concave arc-shaped positioning grooves 15 corresponding to each station and adapted to the arc of the battery 100;

[0030] The adhesive tape device 2 is used to cover the protective plate 100a with adhesive tape and fix it to the surface of the battery 100; the adhesive tape device 2 is also provided with a first clamping claw cylinder 7121 for clamping and positioning the protective plate 100a, and the first clamping claw cylinder 7121 is provided at the free end of the protective plate 100a of the battery 100;

[0031] The sleeve device 3 is used to sleeve the heat shrink tube on the battery 100, including a sleeve reel 31 for feeding, a tube support device 32 for stretching the sleeve and inserting it into the battery 100, and a tube cutting assembly 33 for cutting the heat shrink tube after the sleeve is completed; the tube support device 32 includes a circular support rod 321 coaxially arranged at one end of the battery 100, two sets of first clamping rollers 322 distributed at intervals along the length direction of the support rod 321 for rolling and clamping the support rod 321, and two sets of second clamping rollers 323 distributed at intervals for rolling and clamping the support rod 321, wherein the first clamping roller 32 2 and the axial direction of the second clamping roller pair 323 are mutually perpendicular, and the first clamping roller pair 322 and the second clamping roller pair 323 have at least one set of driving rollers; wherein, corresponding to each side roller shaft of each set of the first clamping roller pair 322, the support rod 321 is provided with a mounting groove 3211 along the axial direction, and two sets of rollers 3212 are rotatably mounted in the mounting groove 3211 through a pin shaft, and the two sets of rollers 3212 are arranged at intervals along the length direction of the support rod 321, and each side roller shaft of the first clamping roller pair 322 is mounted between the two sets of rollers 3212;

[0032] The pre-forming device 4 is used to pre-shrink the two ends of the heat shrinkable tube to position the battery 100, including a driven rod 41 coaxially rotatably mounted on one end of the battery 100, an active rod 42 coaxially arranged on the other end of the battery 100, a motor 43 driving the active rod 42 to rotate around the axis, a linear device 44 driving the active rod 42 and the driven rod 41 to reciprocate along the axial direction, and a heating assembly 45 close to the two ends of the battery 100;

[0033] The heating device 5 is used to heat the battery 100 after the predetermined shape is formed, so that the heat shrinkable tube shrinks and covers the outside of the battery 100.

[0034] During operation, the battery 100 to be processed is placed horizontally into the positioning groove 15 of the conveying device 1, and the protective plate 100a and its wire 100b are placed on the upper surface of the battery 100 along the axial direction of the battery 100, with the free end of the wire 100b facing outward, and the lifting rod 12 is driven by the lifting device 13 to lift up, so that the battery 100 is separated from the supporting rod 11, and then the pneumatic stepping mechanism 14 drives the lifting rod 12 to step into a station, and then the lifting rod 12 is lowered, so that the battery 100 falls into the next station of the supporting rod 11, and the lifting rod 12 is retracted and reset, and the feeding is carried out in this way. The adhesive tape device 2 sticks the adhesive tape on the battery 100 one by one, and the first clamping claw cylinder 7121 is used to fix the tail end of the protective plate 100a and the wire 100b, and is used to correct the position of the protective plate 100a and prevent the protective plate 100a from shifting when sticking the adhesive tape. After entering the heat shrink tube installation station, the heat shrink tube is unwound from the tube reel 31 and passed through the support rod 321 to be stretched, and then the heat shrink tube is driven forward by the first clamping roller pair 322 to be inserted from the inner side of the battery 100. After reaching the set position, the heat shrink tube is cut by the tube cutting assembly 33. Among them, the support rod 321 is completely positioned by the first clamping roller pair 322 and the second clamping roller pair 323, so that it cannot swing, and the support rod 321 contacts the first clamping roller pair 322 through two sets of rollers 3212, which can prevent the support rod 321 from axial movement. When the battery 100 enters the station of the predetermined forming device 4, the linear device 44 drives the active rod 42 and / or the driven rod 41 to approach and push the battery 100 axially, so that the other end of the battery 100 abuts against the driven rod 41, thereby determining the axial position of the battery 100 in the heat shrink sleeve, and then the heating component 45 heats the two ends of the battery 100, and the motor 43 drives the battery 100 to rotate around the axis, so that the heat shrink sleeve shrinks and deforms at the end of the battery 100, and the battery 100 cannot move axially in the heat shrink sleeve. Finally, the battery 100 is sent to the heating component 45 for uniform heating, so that the heat shrink sleeve completely shrinks and covers the surface of the battery 100, and the processing is completed.

[0035] The conveying device 1 feeds the material in steps through the lifting rod 12, and is provided with a positioning groove 15, so that the battery 100 maintains the positioning direction unchanged during the conveyance along the workstation. The adhesive tape device 2 and the first clamping claw cylinder 7121 can ensure that the protective plate 100a is accurately fixed to the surface of the battery 100 by the adhesive tape, and facilitate the subsequent insertion of the heat shrink sleeve. The heat shrink sleeve is then sleeved on the outside of the battery 100 through the sleeve device 3. The sleeve device 3 can fully expand the heat shrink sleeve without deformation, thereby ensuring the smoothness of insertion. Finally, the pre-forming device 4 is used to make the axial position of the battery 100 in the heat shrink sleeve accurate, and the position of the battery 100 in the heat shrink sleeve can be fixed after the two ends of the heat shrink sleeve are preheated and deformed, thereby ensuring the quality of the subsequent complete heat shrink coating. The equipment can realize automated production and significantly improve production efficiency and product quality.

[0036] A preferred solution, the adhesive tape device 2 of this embodiment includes an adhesive tape reel 22 for feeding, a positioning clamp 23 for the adhesive tape to pass through, a movable clamp assembly 24 for clamping the tail end of the adhesive tape and dragging it horizontally, a paper cutting assembly 25 for cutting the adhesive tape, and an adhesive tape manipulator 26 for adsorbing the adhesive tape and applying it to the surface of the battery 100. During operation, the adhesive tape reel 22 discharges the material, the adhesive tape passes through the positioning clamp 23, the tail end is clamped by the movable clamp assembly 24 and dragged horizontally to the set position, and then the adhesive tape is adsorbed by the adhesive tape manipulator 26, and the adhesive tape is cut by the paper cutting assembly 25, and finally the adhesive tape is applied to the surface of the battery 100 at the set position by the adhesive tape manipulator 26. The adhesive tape device 2 can continuously feed materials and has high production efficiency. The function of the adhesive tape device 2 is relatively simple, that is, taking the adhesive tape and applying the adhesive tape. There are many mature adhesive tape application technology solutions in the prior art, which will not be described here.

[0037] A preferred solution, the glue sticking robot 26 of this embodiment includes a horizontal mounting arm 261, a rotary cylinder 264 driving the mounting arm 261 to rotate horizontally around a midpoint, two sets of vertical cylinders 262 fixed at both ends of the mounting arm 261, and a vacuum suction cup assembly 263 driven by the vertical cylinders 262. Two sets of vacuum suction cup assemblies 263 are provided to work alternately in a rotating manner, which can further improve production efficiency.

[0038] A preferred solution is that a glue pressing device 6 is further provided behind the glue sticking device 2 of this embodiment, and the glue pressing device 6 includes a first downward pressing cylinder 61 and a first pressing block 62 driven by the first downward pressing cylinder 61, the bottom surface of the first pressing block 62 has an arc groove 621 whose cross section is adapted to the arc of the battery 100, and the top of the arc groove 621 is also provided with a square groove 622 for accommodating the protective plate 100a. The glue pressing device 6 is used to press the glue paper to completely fit the surface of the battery 100, and the square groove 622 can prevent damage to the protective plate 100a when pressing down.

[0039] In a preferred embodiment, the sleeve device 3 of this embodiment further includes a baffle 34 provided at the other end of the battery 100 relative to the support rod 321, and a sleeve pressing device 35 provided above the battery 100, wherein the sleeve pressing device 35 includes a second downward pressing cylinder 351 and a second pressing block 352 driven by the second downward pressing cylinder 351. The baffle 34 can be used to axially limit the battery 100 when the heat shrink sleeve is sleeved to avoid pushing the battery 100 to axially shift during the sleeve, and the sleeve pressing device is used to position the sleeve when the sleeve is cut to avoid displacement of the sleeve and the battery 100, thereby ensuring the accuracy of the sleeve length.

[0040] A preferred solution is that a material transfer robot 7 is further provided between the pre-forming device 4 and the heating device 5 of this embodiment, and the material transfer robot 7 includes a clamping cylinder 71 for clamping the battery 100, and an XZ-axis translation platform 72 for driving the clamping cylinder 71 to rise and fall and translate; the heating assembly 45 is installed on both sides of the clamping cylinder 71. The clamping cylinder 71 is used to send the pre-formed battery 100 into the heating device 5, and the heating assembly 45 is arranged on the material transfer robot 7, which can drive the heating assembly 45 to move, so that the unheated heat shrink tubing is preheated only when it stays at the pre-forming station, so as to avoid the inaccurate relative position of the heat shrink tubing and the battery 100 caused by premature heating.

[0041] The above description does not limit the technical scope of the present invention in any way. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A heat shrink tubing device for cylindrical batteries with protective plates, characterized in that: include The conveying device is used for conveying and positioning the battery in a stepwise manner, and comprises two parallel supporting rods, a lifting rod arranged in parallel between the two supporting rods, a lifting device for driving the lifting rod to rise and fall, and a pneumatic stepping mechanism for driving the lifting rod to move back and forth in a stepwise manner along its length direction; the supporting rod and the lifting rod both have concave arc-shaped positioning grooves corresponding to each station and adapted to the curvature of the battery; The adhesive tape device is used to cover the protective plate with adhesive tape and fix it to the surface of the battery; the adhesive tape device is also provided with a first clamping claw cylinder for clamping and positioning the protective plate, and the first clamping claw cylinder is arranged at the free end of the protective plate of the battery; A sleeve device, used for sleeve-fitting a heat shrink tube on a battery, comprising a sleeve reel for feeding, a sleeve support device for stretching the sleeve and sleeved it into the battery, and a tube cutting assembly for cutting the heat shrink tube after sleeve-fitting is completed; the sleeve support device comprises a circular support rod coaxially arranged at one end of the battery, two groups of first clamping rollers distributed at intervals along the length direction of the support rod for rolling and clamping the support rod, and two groups of second clamping rollers distributed at intervals for rolling and clamping the support rod, the axial directions of the first clamping rollers and the second clamping rollers are perpendicular to each other, and the first clamping rollers and the second clamping rollers have at least one group of driving rollers; wherein, corresponding to each side roller shaft of each group of the first clamping rollers, the support rod is provided with an installation groove along the axial direction, two groups of rollers are rotatably installed in the installation groove by means of a pin shaft, and the two groups of rollers are arranged at intervals along the length direction of the support rod, and the roller shaft of each side of the first clamping rollers is installed between the two groups of rollers; A pre-forming device, used for pre-shrinking the two ends of the heat shrinkable sleeve to position the battery, comprising a driven rod coaxially rotatably mounted on one end of the battery, an active rod coaxially arranged on the other end of the battery, a motor driving the active rod to rotate around the axis, a linear device driving the active rod and / or the driven rod to reciprocate along the axial direction, and a heating assembly close to the two ends of the battery; And a heating device is used to heat the battery after the predetermined shape as a whole, so that the heat shrinkable sleeve shrinks and covers the outside of the battery.

2. The heat shrink tubing device for cylindrical batteries with protection plates according to claim 1, characterized in that: The adhesive tape device includes an adhesive tape reel for feeding, a positioning clamp for the adhesive tape to pass through, a movable clamp assembly for clamping the tail end of the adhesive tape and dragging it horizontally, a paper cutting assembly for cutting the adhesive tape, and an adhesive tape robot for adsorbing the adhesive tape and applying it to the battery surface.

3. The heat shrink tubing device for cylindrical batteries with protection plates according to claim 2, characterized in that: The glue sticking robot comprises a horizontal mounting arm, a rotary cylinder driving the mounting arm to rotate horizontally around a midpoint, two sets of vertical cylinders fixed at both ends of the mounting arm, and a vacuum suction cup assembly driven by the vertical cylinders.

4. The heat shrink tubing device for cylindrical batteries with protection plates according to claim 2, characterized in that: A glue paper pressing device is also provided behind the glue paper sticking device, and the glue paper pressing device includes a first downward pressing cylinder and a first pressing block driven by the first downward pressing cylinder. The bottom surface of the first pressing block has an arc groove with a cross-section adapted to the curvature of the battery, and a square groove for accommodating a protective plate is also provided on the top of the arc groove.

5. The heat shrink tubing device for cylindrical batteries with protection plates according to claim 1, characterized in that: The sleeve device also includes a baffle plate arranged at the other end of the battery relative to the support rod, and a sleeve pressing device arranged above the battery, the sleeve pressing device includes a second downward pressing cylinder and a second pressing block driven by the second downward pressing cylinder.

6. The heat shrink tubing device for cylindrical batteries with protection plates according to claim 1, characterized in that: A material transfer robot is also provided between the pre-forming device and the heating device. The material transfer robot includes a second clamping cylinder for clamping the battery and an XZ-axis translation platform for driving the second clamping cylinder to lift and translate. The heating component is installed on both sides of the clamping cylinder.

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