A hot melt adhesive bonding device for power batteries

Abstract

The present invention relates to the technical field of power battery processing, and discloses a hot melt adhesive bonding device for power batteries, including a feeding component for feeding workpieces to be processed into the interior of the device chassis along the Y direction; a lifting component, there are two groups of the lifting components, and they are respectively fed along the X and Y directions through a mounting plate along with the feeding component; a hot melt adhesive gun that can be driven by the lifting component to lift along the Z direction; a protection component, the protection component can guide a heated metal hose to push a drill bit into the nozzle of the hot melt adhesive gun, reciprocally stir the residual hot melt adhesive inside the nozzle and continuously heat it, avoiding the residue remaining in the nozzle and also avoiding the situation of the colloid cooling and solidifying, without the need for disassembly, cleaning or replacement of the nozzle, further reducing the production cost.

Description

Technical Field

[0001] The present invention relates to the technical field of power battery processing, and in particular to a hot melt adhesive bonding device for power batteries. Background Art

[0002] In the production process of power batteries, the hot melt adhesive bonding device is a key equipment for achieving high-precision bonding among components such as battery cells, heat sinks, and insulating films. This device forms a viscous molten adhesive by heating and melting a solid colloid, and evenly coats the hot melt adhesive on the surface of the target substrate with the help of a precision glue head, and finally cools and solidifies to form a stable structural bonding layer.

[0003] However, since the hot melt adhesive needs to operate continuously at high temperature for a long time, the polymer chains inside the colloid are prone to local carbonization, and residues gradually accumulate in the internal flow channels or nozzles of the glue head; the cooling and solidification of the colloid caused by temperature fluctuations or suspension of operation during the process will also lead to a reduction in the cross-sectional area of the flow channel or even complete blockage; once blockage occurs, it will directly result in unstable glue output, broken glue lines or offset coating trajectories, causing defects such as uneven bonding strength of the power battery module and increased interface thermal resistance. This will not only weaken the structural stability of the battery pack, but also may cause potential thermal runaway hazards due to local heat dissipation failure.

[0004] The traditional solution is to frequently stop the machine for nozzle disassembly, cleaning or replacement, resulting in a 20%-40% decrease in the equipment utilization rate, and the increase in the rejection rate caused by rework further raises the production cost. Summary of the Invention

[0005] The purpose of the present invention is to provide a hot melt adhesive bonding device for power batteries, aiming to solve the problems in the prior art.

[0006] The present invention is implemented as follows. A hot melt adhesive bonding device for power batteries includes:

[0007] A feeding assembly for feeding workpieces to be processed into the interior of the device chassis along the Y direction;

[0008] A lifting assembly. There are two groups of the lifting assemblies, and they are respectively fed along the X and Y directions through the mounting plate along with the feeding assembly;

[0009] A hot melt adhesive gun that can be driven by the lifting assembly to lift along the Z direction;

[0010] A protection assembly. The protection assembly is installed on the mounting plate through a support plate rotating shaft. The position of the protection assembly remains stationary relative to the hot melt adhesive gun, and the protection assembly is used to rotate 90° clockwise along the rotating shaft mounting part and sleeve outside the hot melt adhesive gun as the hot melt adhesive gun rises, or rotate 90° counterclockwise along the rotating shaft mounting part and open from the hot melt adhesive gun as the hot melt adhesive gun descends;

[0011] When the hot melt glue gun rises, the metal hose inside the protection component extends into the nozzle of the hot melt glue gun, and heats the drill bit at the end of the rotating metal hose for leak prevention and blockage prevention operations of the nozzle.

[0012] Preferably, a processing platform is arranged inside the device chassis. A power supply and a glue supply tank are respectively arranged below the device chassis at the position of the processing platform. A glue supply heat pump is arranged above the glue supply tank, which extracts the hot melt glue from the glue supply tank through a glue supply heat pump pipeline and feeds it into the hot melt glue gun.

[0013] The feeding and guiding component is installed above the processing platform, and feeding windows are respectively opened at the front and rear parts of the device chassis at the position of the processing platform.

[0014] Preferably, the feeding and guiding component includes a feeding rail arranged along the Y direction, and guide wheels for feeding are arranged on the feeding rail.

[0015] The feeding and guiding component further includes two Y-direction guide rails arranged above the feeding rail. The two ends of the two Y-direction guide rails are respectively provided with X-direction guide rails. A guide seat is guided on the two X-direction guide rails, and the lifting component is connected to the guide seat through the mounting plate.

[0016] Preferably, the lifting component is a telescopic machine body, and a connecting frame arranged in an inverted L shape is installed on its telescopic part. The lower end of the connecting frame is fixedly clamped with the hot melt glue gun through a clamp.

[0017] Preferably, the inner wall of the hot melt glue gun is wrapped with a heating inner liner, and a nozzle is further arranged inside the heating inner liner, and the nozzle penetrates and extends to the outside of the bottom of the hot melt glue gun.

[0018] Preferably, an electric heater and a guiding component are respectively installed on one side of the protection component. The end of the protection component is rotationally connected with a rotating ring. The guiding component includes a sleeve extending to the rotating ring. The metal hose extends into the protection component through the sleeve, and the electric heater is used to conduct heat by electrifying the metal hose.

[0019] A rotating motor for driving the rotating ring to rotate is further installed on one side of the protection component. Two groups of protruding parts are arranged on the inner wall of the rotating ring, and strip-shaped grooves corresponding to the protruding parts are respectively opened on both side surfaces of the metal hose.

[0020] Preferably, the guiding component further includes a push-pull telescopic machine. A connecting end is installed on the telescopic part of the push-pull telescopic machine, and the end of the metal hose is rotationally connected with the connecting end.

[0021] Preferably, a connecting rod is slidably installed inside the end of the support plate. The lower end of the connecting rod is rotationally connected with a rotating bracket through a rotating shaft, and the protection component is connected through the rotating bracket.

[0022] A spring is sleeved outside the connecting rod, and two ends of the spring abut against the bottom of the support plate and the top of the rotating bracket respectively.

[0023] Preferably, a top piece is arranged at the top of the connecting rod on the support plate. A toothed plate is arranged on one side of the bottom of the hot melt adhesive gun close to the top piece. A convex tooth meshing with the tooth groove on the surface of the toothed plate is further arranged outside the shaft connecting part of the rotating bracket.

[0024] Preferably, a side port is opened at one end of the protection component close to the hot melt adhesive gun, and a tapered guiding head is further arranged inside the protection component. The inner wall of the guiding head gradually narrows along the direction of the drill bit.

[0025] The beneficial effects of the hot melt adhesive laminating device for power batteries disclosed by the present invention are as follows:

[0026] 1. For the hot melt adhesive laminating disclosed by the present invention, two groups of hot melt adhesive guns are arranged to alternately perform coating processing. During the upward movement of the standby hot melt adhesive gun, the protection component can automatically sleeve on the nozzle of the hot melt adhesive gun, avoiding the leakage of the adhesive from the nozzle.

[0027] 2. The protection component can also guide the heated metal hose to push the drill bit into the nozzle of the hot melt adhesive gun, reciprocally stir the residual hot melt adhesive inside the nozzle and continuously heat it, avoiding the residue of the hot melt adhesive inside the nozzle and the cooling and solidification of the adhesive. There is no need to disassemble, clean or replace the nozzle, further reducing the production cost. Description of the Drawings

[0028] Figure 1 is a schematic diagram of a hot melt adhesive laminating device for power batteries provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the internal structure of a hot melt adhesive laminating device for power batteries provided by an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of the structures of the hot melt adhesive gun and the protection component of a hot melt adhesive laminating device for power batteries provided by an embodiment of the present invention;

[0031] Figure 4 is a hot melt adhesive laminating device for power batteries provided by an embodiment of the present invention Figure 3 in a schematic cross-sectional structure diagram along the arrow direction A-A;

[0032] Figure 5 is a hot melt adhesive laminating device for power batteries provided by an embodiment of the present invention Figure 4 in a partial enlarged structure diagram at B.

[0033] Marking Description:

[0034] 1. Device chassis; 2. Feeding component; 3. Lifting component; 4. Hot melt adhesive gun; 5. Protection component;

[0035] 11. Delivery window; 12. Processing platform; 13. Power supply; 14. Glue supply tank; 141. Glue supply heat pump;

[0036] 21. Feeding rail; 22. X-direction guide rail; 23. Y-direction guide rail; 24. Guide seat;

[0037] 31. Mounting plate; 32. Support plate; 33. Connecting frame; 34. Clamp;

[0038] 41. Nozzle; 42. Heating inner tank; 43. Tooth plate;

[0039] 51. Side port; 52. Rotating ring; 53. Rotating motor; 54. Electric heater; 55. Guiding component; 56. Rotating bracket; 57. Spring; 58. Top piece; 59. Connecting rod;

[0040] 511. Guiding head; 551. Push-pull telescopic machine; 552. Connecting end; 553. Sleeve; 554. Metal hose; 555. Drill bit. Detailed implementation manners

[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0044] In this embodiment:

[0045] Referring to the attached Figure 1 - attached Figure 2 As shown, a preferred embodiment is provided by the present invention.

[0046] The present invention mainly solves the problems of residue accumulation at the nozzle, the cooling and solidification of the glue caused by the temperature fluctuation or suspension of the glue solution during the process, resulting in frequent shutdowns for nozzle disassembly and cleaning or replacement, and reducing the production rate.

[0047] The hot-melt adhesive bonding device for power batteries in this embodiment includes:

[0048] A feeding assembly 2 for feeding workpieces to be processed into the interior of the device chassis 1 along the Y direction; a processing platform 12 is provided inside the device chassis 1, the feeding assembly 2 is installed above the processing platform 12, and feeding windows 11 are opened at the front and rear parts of the device chassis 1 where the processing platform 12 is located. The processing original is sent into the device chassis 1 through the feeding window 11 in front of the device chassis 1, and is fed by the feeding assembly 2 to the outside of the feeding window 11 at the rear of the device chassis 1. During this process, hot-melt adhesive is sprayed on the processing original for subsequent bonding operations;

[0049] A lifting assembly 3, there are two groups of the lifting assembly 3, and they are respectively driven along the X and Y directions by the mounting plate 31 along with the feeding assembly 2; a hot-melt adhesive gun 4 can be driven by the lifting assembly 3 to lift along the Z direction; under the action of the lifting assembly 3, the two hot-melt adhesive guns 4 can respectively perform transmission and lifting spraying operations in the X and Y directions;

[0050] A protection assembly 5, the protection assembly 5 is pivotally installed on the mounting plate 31 through a support plate 32, the position of the protection assembly 5 remains stationary compared with the hot-melt adhesive gun 4, and the protection assembly 5 is used to rotate 90° clockwise along the pivot mounting part and sleeve outside the hot-melt adhesive gun 4 as the hot-melt adhesive gun 4 rises, which can avoid the leakage of residual glue in the nozzle 41 after the hot-melt adhesive gun 4 stops working. The protection assembly 5 rotates 90° counterclockwise along the pivot mounting part and opens from the hot-melt adhesive gun 4 as the hot-melt adhesive gun 4 descends, preventing the protection assembly 5 from interfering with the work of the hot-melt adhesive gun 4 during the coating process;

[0051] When the hot-melt adhesive gun 4 rises, the metal hose 554 inside the protection assembly 5 extends into the nozzle 41 of the hot-melt adhesive gun 4, and the drill bit 555 at the end of the rotating metal hose 554 is heated, which is used for anti-leakage and anti-blockage operations of the nozzle 41. It can peel off the residues attached to the inner wall of the nozzle 41, and at the same time can remelt and dredge the hot-melt adhesive solidified due to the cooling of the glue inside the nozzle 41, without the need for disassembly, cleaning or replacement operations, improving the processing efficiency.

[0052] In the appendix Figure 2In it, a power supply 13 and a glue supply tank 14 are respectively arranged below the device chassis 1 on the processing platform 12. A glue supply heat pump 141 is arranged above the glue supply tank 14. It extracts the hot melt adhesive from the glue supply tank 14 through a pipeline of the glue supply heat pump 141 and feeds it into the hot melt adhesive gun 4. The power supply 13 is used to supply power to each component of the device. The glue supply heat pump 141 is used to extract the hot melt adhesive in the glue supply tank 14 and preheat it so that it can flow fully and then be injected into the hot melt adhesive gun 4 for spraying operation.

[0053] Moreover, the guiding and feeding assembly 2 includes a feeding rail 21 arranged along the Y direction. Guide wheels for feeding are arranged on the feeding rail 21. The guide wheels are used to support the processed parts and convey them along with the feeding rail 21. The guiding and feeding assembly 2 also includes two Y-direction guide rails 23 arranged above the feeding rail 21. X-direction guide rails 22 are guided at both ends of the two Y-direction guide rails 23. A guide seat 24 is guided on the two X-direction guide rails 22. The lifting assembly 3 is connected to the guide seat 24 through the mounting plate 31. Under the action of the Y-direction guide rails 23 and the X-direction guide rails 22, the guide seat 24 can realize the transmission in the X and Y directions, and the lifting assembly 3 is used to drive the guide seat 24 to realize the lifting operation in the Z direction.

[0054] Refer to the appendix Figure 3 - appendix Figure 4 As shown, the lifting assembly 3 is a telescopic machine body. Its telescopic part is equipped with a connecting frame 33 arranged in an inverted L shape. The lower end of the connecting frame 33 is clamped and fixed to the hot melt adhesive gun 4 through a clamp 34. The inner wall of the hot melt adhesive gun 4 is wrapped with a heating inner tank 42. A spray pipe 41 is also arranged inside the heating inner tank 42. The spray pipe 41 penetrates and extends to the outside of the bottom of the hot melt adhesive gun 4. The heating inner tank 42 further heats the hot melt adhesive introduced into the hot melt adhesive gun 4 to 120°C - 180°C, keeping the hot melt adhesive completely melted and having fluidity, so that it can be sprayed onto the surface of the processed parts along with the spray pipe 41.

[0055] In the appendix Figure 4 and the appendix Figure 5 In it, an electric heater 54 and a guiding component 55 are respectively installed on one side of the protection component 5. The end of the protection component 5 is rotatably connected to a rotating ring 52. The guiding component 55 includes a sleeve 553 extending to the rotating ring 52. The metal hose 554 extends into the protection component 5 through the sleeve 553. The electric heater 54 is used to conduct electricity and heat the metal hose 554. The metal hose 554 is a stainless steel corrugated hose. A resistance wire is embedded in the stainless steel corrugated hose. Heat is generated by the power supply of the electric heater 54 to remelt the condensed hot melt adhesive and prevent blockage.

[0056] It is worth noting that a rotating motor 53 for driving the rotating ring 52 to rotate is also installed on one side of the protective component 5, and two groups of protrusions are provided on the inner wall of the rotating ring 52. The surfaces of both sides of the metal hose 554 are provided with strip grooves corresponding to the protrusions. The guiding component 55 also includes a push-pull telescopic machine 551, and the telescopic part of the push-pull telescopic machine 551 is installed with a connecting end 552, and the end of the metal hose 554 is connected to the connecting end 552 with a rotating shaft; in this way, in the process of pushing the metal hose 554 through the rotating ring 52 by the push-pull telescopic machine 551, the protrusion on the inner wall of the rotating ring 52 can slide inside the strip groove of the metal hose 554, and when the rotating ring 52 is driven to rotate by the rotating motor 53, the metal hose 554 can be driven by the protrusion of the rotating ring 52 to rotate along the rotating shaft connection part through the strip groove, so that the drill bit 555 at the end of the metal hose 554 can easily break the blockage of the nozzle 41, thereby extending the metal hose 554 into the interior of the nozzle 41.

[0057] In this embodiment, a connecting rod 59 is slidably installed on the inner side of the end of the support plate 32, and the lower end of the connecting rod 59 is connected to a rotating bracket 56 through a rotating shaft, and the protective component 5 is connected through the rotating bracket 56; a spring 57 is sleeved on the outside of the connecting rod 59, and the two ends of the spring 57 respectively contact the bottom of the support plate 32 and the top of the rotating bracket 56, and the connecting rod 59 is located at the top of the support plate 32. A top plate 58 is also provided on the top of the support plate 32, and a toothed plate 43 is provided on the bottom side of the hot melt glue gun 4 close to the top plate 58, and a toothed plate 43 is also provided on the outer side of the rotating shaft connecting portion of the rotating bracket 56. The convex teeth meshed with the face teeth and grooves, when the hot melt glue gun 4 is driven to rise with the lifting component 3, the tooth plate 43 on one side of the hot melt glue gun 4 will mesh with the convex teeth of the rotating bracket 56, thereby pushing the rotating bracket 56 to rotate 90 degrees, driving the protective component 5 to be inserted into the outside of the hot melt glue gun 4, and the protective component 5 is provided with a side opening 51 at one end close to the hot melt glue gun 4, so that the protective component 5 can be rotated and inserted into the outside of the hot melt glue gun 4 through the side opening 51, and the interior of the protective component 5 is also provided with a conical guide head 511, and the inner wall of the guide head 511 gradually shrinks along the direction of the drill bit 555;

[0058] When the lifting assembly 3 and the hot melt glue gun 4 are further lifted, the tooth plate 43 will press against the top plate 58, thereby pulling the connecting rod 59 upward, compressing the spring 57, and allowing the nozzle 41 of the hot melt glue gun 4 to move toward the end of the guide head 511 inside the protective assembly 5, so that the drill bit 555 passing through the guide head 511 can be inserted into the nozzle 41;

[0059] When the lifting component 3 drives the hot melt adhesive gun 4 to move downward, the toothed plate 43 will leave the top piece 58. When the spring 57 loses its acting force and resets, the protection component 5 will sink, so that the drill bit 555 at the end of the guiding head 511 disengages from the spray pipe 41, and at the same time, a certain distance is generated between the guiding head 511 and the spray pipe 41, avoiding interference when the protection component 5 rotates counterclockwise by 90° through the toothed plate 43.

[0060] The power battery hot melt adhesive bonding device of the present invention realizes the precise conveying and positioning of the processing original parts through the feeding component 2, and cooperates with the lifting component 3 to drive the hot melt adhesive gun 4 to complete the X / Y / Z three-axis movement to ensure the accurate spraying position;

[0061] The hot melt adhesive gun 4 is internally provided with a heating inner tank 42 (maintaining 120-180 °C) and a spray pipe 41, and realizes lifting and coating through the lifting component 3. The protection component 5 is linked with the toothed plate 43 through the support plate 32, automatically rotates 90° and fits when the hot melt adhesive gun 4 rises, and disengages in the reverse direction when it descends, preventing the leakage of the colloid.

[0062] The protection component 5 is internally provided with a metal hose 554, which is powered and heated by the electric heater 54, and cooperates with the rotating motor 53 to drive the rotating ring 52 to drive the drill bit 555 at the end of the metal hose 554 to rotate, realizing the peeling of the residues on the inner wall of the spray pipe 41 and the dredging of the colloid.

[0063] The metal hose 554 is pushed into the spray pipe 41 by the push-pull telescopic machine 551, and the rotating ring 52 uses the convex part to engage with the groove to drive the drill bit 555 to rotate and break the blockage; the metal hose 554 is electrically heated to the melting point of the colloid, and the solidified colloid is completely removed by combining the rotational centrifugal force, avoiding disassembly and maintenance; the spring 57 and the connecting rod 59 control the opening and closing amplitude of the protection component 5 when the hot melt adhesive gun 4 rises and falls, ensuring that the dredging action and the spraying process do not interfere with each other, and significantly improving the production efficiency and the equipment utilization rate.

[0064] On the basis of the above embodiment, the push-pull telescopic machine 551 can be selected from structures such as cylinders, oil cylinders, motors with lifting rods, etc., and is not limited in this embodiment.

[0065] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hot melt adhesive bonding device for a power battery, characterized in that: include: A guide assembly is used to deliver the workpiece to be processed into the interior of the device chassis along the Y direction; Lifting components, the lifting components have two groups, and are guided along X and Y directions respectively with the guiding components through the mounting plate; The hot melt glue gun can be driven by the lifting assembly to rise and fall along the Z direction; A protection component, wherein the protection component is mounted on the support plate of the mounting plate through a rotating shaft, the position of the protection component remains stationary compared to the hot melt glue gun, and the protection component is used to rotate 90° clockwise along the rotating shaft mounting portion as the hot melt glue gun rises, and is inserted into the outside of the hot melt glue gun, or rotate 90° counterclockwise along the rotating shaft mounting portion as the hot melt glue gun falls, and is opened from the hot melt glue gun; When the hot melt glue gun rises, the metal hose inside the protective component extends into the nozzle of the hot melt glue gun and heats the drill bit at the end of the rotating metal hose to prevent leakage and blockage of the nozzle; A connecting rod is slidably mounted on the inner side of the end of the support plate, the lower end of the connecting rod is connected to a rotating bracket via a rotating shaft, and the protection component is connected to the rotating shaft via the rotating bracket; The connecting rod is sleeved with a spring on its exterior, and the two ends of the spring are respectively in contact with the bottom of the support plate and the top of the rotating bracket; The connecting rod is also provided with a top plate at the top of the support plate, the hot melt glue gun is provided with a tooth plate on the bottom side close to the top plate, and the outer side of the rotating shaft connection part of the rotating bracket is also provided with convex teeth that mesh with the tooth grooves on the surface of the tooth plate.

2. A hot melt adhesive bonding device for a power battery as claimed in claim 1, characterized in that: A processing platform is arranged inside the device chassis, and a power supply and a glue supply box are arranged below the processing platform in the device chassis. A glue supply heat pump is arranged above the glue supply box, which extracts hot melt glue from the glue supply box through the glue supply heat pump pipeline and delivers it to the hot melt glue gun; The guide assembly is installed above the processing platform, and the device chassis is located at the front and rear parts of the processing platform and is provided with delivery windows.

3. A hot melt adhesive bonding device for a power battery as claimed in claim 1, characterized in that: The guide assembly comprises a feeding rail arranged along the Y direction, and a guide wheel for feeding is arranged on the feeding rail; The guiding assembly also includes two Y-guide rails placed above the feeding rail, both ends of the two Y-guide rails are provided with X-guide rails, and the two X-guide rails are provided with guide seats, and the lifting assembly is connected to the guide seats through the mounting plate.

4. A hot melt adhesive bonding device for a power battery as claimed in claim 1, characterized in that: The lifting assembly is a telescopic machine body, and a connecting frame arranged in an inverted L shape is installed on the telescopic part thereof. The lower end of the connecting frame is clamped and fixed to the hot melt glue gun through a clamp.

5. A hot melt adhesive bonding device for a power battery as claimed in claim 1, characterized in that: The inner wall of the hot melt glue gun is wrapped with a heating liner, and a nozzle is also arranged inside the heating liner. The nozzle penetrates and extends to the outside of the bottom of the hot melt glue gun.

6. A hot melt adhesive bonding device for a power battery as claimed in claim 1, characterized in that: An electric heater and a guide assembly are respectively installed on one side of the protection assembly, the end shaft of the protection assembly is connected to a rotating ring, the guide assembly includes a sleeve extending to the rotating ring, the metal hose extends to the inside of the protection assembly through the sleeve, and the electric heater is used to conduct electricity and heat to the metal hose; A rotating motor for driving the rotating ring to rotate is also installed on one side of the protection component. Two groups of protrusions are arranged on the inner wall of the rotating ring. Strip grooves corresponding to the protrusions are opened on the two side surfaces of the metal hose.

7. A hot melt adhesive bonding device for a power battery as claimed in claim 6, characterized in that: The guide assembly also includes a push-pull telescopic machine, the telescopic part of the push-pull telescopic machine is equipped with a connecting end, and the end of the metal hose is connected to the connecting end rotating shaft.

8. A hot melt adhesive bonding device for a power battery as claimed in claim 1, characterized in that: A side opening is provided at one end of the protective component close to the hot melt glue gun, and a conical guide head is also provided inside the protective component, and the inner wall of the guide head gradually shrinks along the direction of the drill bit.

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