Hot melt adhesive laminating device for power battery

Abstract

The invention relates to the technical field of power battery processing, and discloses a hot melt adhesive laminating device for a power battery, which comprises a guiding and conveying assembly for conveying a to-be-processed workpiece into a device case along a Y direction; the number of the lifting assemblies is two, and the lifting assemblies are guided and conveyed along the X direction and the Y direction along with the guiding and conveying assemblies through mounting plates; the hot melt glue gun can be driven by the lifting assembly to ascend and descend in the Z direction; the protection assembly can guide the heated metal hose to push the drill bit to stretch into the spray pipe of the hot melt glue gun, hot melt glue left in the spray pipe is stirred in a reciprocating mode and continuously heated, the situation that the hot melt glue left in the spray pipe is left in the spray pipe is avoided, the situation that glue is cooled and solidified is also avoided, and the spray pipe does not need to be disassembled, cleaned or replaced; and the production cost is further reduced.

Description

Technical Field

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

[0002] In the production process of power batteries, hot melt adhesive bonding devices are key equipment for achieving high-precision bonding between components such as battery cells, heat sinks, and insulating films. The device heats and melts solid colloids to form a viscous adhesive liquid, and uses a precision adhesive head to evenly apply the hot melt adhesive to the surface of the target substrate, and finally cools and solidifies to form a stable structural adhesive layer.

[0003] However, since 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 flow channel or nozzle inside the glue head; the temperature fluctuation of the glue liquid or the cooling and solidification of the colloid caused by suspension of operation during the process will also cause the cross-sectional area of ​​the flow channel to decrease or even completely block it; once blockage occurs, it will directly lead to unstable glue output, breakpoints of the glue line or deviation of the coating trajectory, resulting in uneven bonding strength of the power battery module, increased interface thermal resistance and other defects, which will not only weaken the structural stability of the battery pack, but may also cause thermal runaway risks due to local heat dissipation failure.

[0004] The traditional solution is to frequently shut down the machine to disassemble, clean or replace the nozzle, which results in a 20%-40% decrease in equipment utilization. At the same time, the increase in scrap rate due to rework further increases production costs. Summary of the invention

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

[0006] The present invention is implemented as follows: a hot melt adhesive bonding device for a power battery, comprising: 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 mounting plate through a support plate 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 shaft mounting portion of the hot melt glue gun to be inserted into the outside of the hot melt glue gun, or rotate 90° counterclockwise along the shaft mounting portion of the hot melt glue gun to be 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.

[0007] Preferably, a processing platform is provided inside the device chassis, a power supply and a glue supply box are provided below the processing platform, and a glue supply heat pump is provided above the glue supply box, which extracts hot melt glue from the glue supply box through a glue supply heat pump pipeline and delivers it to a 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.

[0008] Preferably, the guide assembly comprises a feeding rail arranged along the Y direction, and the feeding rail is provided with a guide wheel for feeding; 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.

[0009] Preferably, the lifting assembly is a telescopic machine body, and a telescopic portion thereof is provided with a connecting frame arranged in an inverted L shape, and the lower end portion of the connecting frame is clamped and fixed to the hot melt glue gun via a clamp.

[0010] Preferably, the inner wall of the hot melt glue gun is provided with a heating liner, and a nozzle is also provided inside the heating liner, and the nozzle penetrates and extends to the outside of the bottom of the hot melt glue gun.

[0011] Preferably, 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.

[0012] Preferably, the guide assembly further comprises a push-pull telescopic machine, the telescopic portion of the push-pull telescopic machine is provided with a connecting end, and the end of the metal hose is connected to the rotating shaft of the connecting end.

[0013] Preferably, 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 protective assembly is connected via the rotating bracket; A spring is sleeved on the outside of the connecting rod, and two ends of the spring respectively contact the bottom of the support plate and the top of the rotating bracket.

[0014] Preferably, 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 a convex tooth that engages with the tooth groove on the surface of the tooth plate.

[0015] Preferably, 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 decreases along the direction of the drill bit.

[0016] The invention discloses a hot melt adhesive bonding device for a power battery, and the beneficial effects are: 1. The hot melt adhesive bonding disclosed in the present invention is processed by setting two groups of hot melt glue guns to perform coating alternately, and when the hot melt glue guns on standby are moving upward, the protective component can automatically be inserted into the nozzle of the hot melt glue gun to avoid glue leakage from the nozzle; 2. The protective component can also guide the heated metal hose to push the drill bit into the nozzle of the hot melt glue gun, reciprocatingly stir and continuously heat the hot melt glue remaining in the nozzle, avoiding the residue in the nozzle and the cooling and solidification of the colloid. There is no need to disassemble, clean or replace the nozzle, further reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a hot melt adhesive bonding device for a power battery provided by an embodiment of the present invention; Figure 2 It is a schematic diagram of the internal structure of a hot melt adhesive bonding device for a power battery provided by an embodiment of the present invention; Figure 3 It is a schematic structural diagram of a hot melt glue gun and a protective component of a hot melt glue laminating device for a power battery provided by an embodiment of the present invention; Figure 4 A hot melt adhesive bonding device for a power battery provided by an embodiment of the present invention Figure 3 Schematic diagram of the AA section structure along the arrow direction; Figure 5 A hot melt adhesive bonding device for power batteries provided by an embodiment of the present invention Figure 4 Schematic diagram of the local enlarged structure at point B in the figure.

[0018] Marking Description: 1. Device chassis; 2. Guide assembly; 3. Lifting assembly; 4. Hot melt glue gun; 5. Protective assembly; 11. Delivery window; 12. Processing platform; 13. Power supply; 14. Glue supply box; 141. Glue supply heat pump; 21. Feed rail; 22. X-guide rail; 23. Y-guide rail; 24. Guide seat; 31. Mounting plate; 32. Support plate; 33. Connecting frame; 34. Clamp; 41. nozzle; 42. heating liner; 43. tooth plate; 51. side opening; 52. rotating ring; 53. rotating motor; 54. electric heater; 55. guide assembly; 56. rotating bracket; 57. spring; 58. top sheet; 59. connecting rod; 511. guide head; 551. push-pull telescopic machine; 552. connecting end; 553. casing; 554. metal hose; 555. drill bit. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0020] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the 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 direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] In this embodiment: See attached Figure 1 -Attached Figure 2 As shown, a preferred embodiment of the present invention is provided.

[0023] The present invention mainly solves the problem of residue accumulation at the nozzle, temperature fluctuation of the glue liquid during the process or cooling and solidification of the glue caused by suspension of operation, resulting in frequent shutdown for nozzle disassembly, cleaning or replacement, and reduced productivity.

[0024] The hot melt adhesive bonding device for power batteries of this embodiment includes: The guide assembly 2 is used to deliver the workpiece to be processed to the inside of the device chassis 1 along the Y direction; a processing platform 12 is provided inside the device chassis 1, and the guide assembly 2 is installed above the processing platform 12, and delivery windows 11 are provided at the front and rear parts of the device chassis 1 located at the processing platform 12. The original workpiece is delivered to the device chassis 1 through the delivery window 11 in front of the device chassis 1, and is guided and delivered to the outside of the delivery window 11 at the rear of the device chassis 1 by the guide assembly 2. In this process, the original workpiece is sprayed with hot melt adhesive for subsequent bonding operations; The lifting assembly 3 has two groups, and is guided along the X and Y directions respectively along the guide assembly 2 through the mounting plate 31; the hot melt glue 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 groups of hot melt glue guns 4 can be driven and lifted and sprayed in the X and Y directions respectively; The protective component 5 is installed on the mounting plate 31 through the support plate 32 rotation axis. The position of the protective component 5 remains stationary compared to the hot melt glue gun 4. The protective component 5 is used to rotate 90° clockwise along the rotation axis mounting portion of the hot melt glue gun 4 as it rises and is inserted into the outside of the hot melt glue gun 4, which can prevent the hot melt glue gun 4 from leaking residual glue from the nozzle 41 after the operation is stopped. The protective component 5 rotates 90° counterclockwise along the rotation axis mounting portion of the hot melt glue gun 4 as it falls and is opened from the hot melt glue gun 4, preventing the protective component 5 from interfering with the operation of the hot melt glue gun 4 during the coating process; When the hot melt glue gun 4 rises, the metal hose 554 inside the protective component 5 extends into the nozzle 41 of the hot melt glue gun 4, and heats the drill bit 555 at the end of the rotating metal hose 554 to prevent leakage and blockage of the nozzle 41. The residue attached to the inner wall of the nozzle 41 can be peeled off, and the hot melt glue in the nozzle 41 that has solidified due to cooling of the colloid can be re-melted and unblocked. There is no need to disassemble, clean or replace, thereby improving the processing efficiency.

[0025] In the attached Figure 2 In the figure, the device chassis 1 is located below the processing platform 12 and is respectively provided with a power supply 13 and a glue supply box 14. A glue supply heat pump 141 is provided above the glue supply box 14, which extracts the hot melt glue from the glue supply box 14 through the glue supply heat pump 141 pipeline and sends it into the hot melt glue gun 4; the power supply 13 is used to power various components of the device, and the glue supply heat pump 141 is used to extract the hot melt glue in the glue supply box 14 and preheat it so that it can fully flow and then inject it into the hot melt glue gun 4 for spraying operation; Furthermore, the guide assembly 2 includes a feed rail 21 arranged along the Y direction, and a guide wheel for feeding is arranged on the feed rail 21, and the guide wheel is used to lift the original workpiece for processing and transport it along the feed rail 21; the guide assembly 2 also includes two Y guide rails 23 placed above the feed rail 21, and both ends of the two Y guide rails 23 are guided by X guide rails 22, and guide seats 24 are guided on the two X guide rails 22, and the lifting assembly 3 is connected to the guide seat 24 through the mounting plate 31. Under the action of the Y guide rail 23 and the X guide rail 22, the guide seat 24 can realize 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; See attached Figure 3 -Attached Figure 4 As shown, the lifting assembly 3 is a telescopic machine body, and the telescopic part thereof is installed 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 glue gun 4 through a clamp 34. The inner wall of the hot melt glue gun 4 is wrapped with a heating liner 42, and a nozzle 41 is further arranged inside the heating liner 42. The nozzle 41 penetrates and extends to the outside of the bottom of the hot melt glue gun 4. The heating liner 42 is used to further heat the hot melt glue introduced into the hot melt glue gun 4 to 120°C-180°C, so as to keep the hot melt glue completely melted and fluid, and can be sprayed onto the surface of the original workpiece with the nozzle 41; In the attached Figure 4 and attached Figure 5 In the embodiment, an electric heater 54 and a guide assembly 55 are respectively installed on one side of the protection assembly 5. The end shaft of the protection assembly 5 is connected with a rotating ring 52. The guide assembly 55 includes a sleeve 553 extending to the rotating ring 52. The metal hose 554 extends to the inside of the protection assembly 5 through the sleeve 553. The electric heater 54 is used to conduct electricity and heat to the metal hose 554. The metal hose 554 is a stainless steel corrugated hose with an embedded resistance wire. The electric heater 54 is used to generate heat to re-melt the condensed hot melt adhesive to prevent clogging. 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.

[0026] 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; 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; When the lifting assembly 3 moves downward with the hot melt glue gun 4, the tooth plate 43 will leave the top plate 58, and when the spring 57 loses its force and resets, the protective assembly 5 will sink, so that the drill bit 555 at the end of the guide head 511 will be separated from the nozzle 41, and at the same time, a certain distance will be created between the guide head 511 and the nozzle 41 to avoid interference when the protective assembly 5 is rotated 90° counterclockwise through the tooth plate 43.

[0027] The power battery hot melt adhesive bonding device of the present invention realizes accurate conveying and positioning of the processed original parts through the guide assembly 2, and cooperates with the lifting assembly 3 to drive the hot melt adhesive gun 4 to complete the X / Y / Z three-axis movement to ensure the accuracy of the spraying position; The hot melt glue gun 4 has a built-in heating liner 42 (maintaining 120-180°C) and a nozzle 41, and realizes lifting and coating through the lifting component 3. The protective component 5 is linked with the tooth plate 43 through the support plate 32, and automatically rotates 90° to fit when the hot melt glue gun 4 rises, and reverses and disengages when it falls to prevent colloid leakage.

[0028] The protective component 5 has a built-in 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, thereby driving the drill bit 555 at the end of the metal hose 554 to rotate, thereby achieving the stripping of residues on the inner wall of the nozzle 41 and the dredging of the colloid.

[0029] The metal hose 554 is pushed into the nozzle 41 by the push-pull telescopic machine 551, and the rotating ring 52 drives the drill bit 555 to rotate and break the blockage by engaging the convex part and the groove; the metal hose 554 is powered on and heated to the melting point of the colloid, and the solidified colloid is completely removed by the rotating centrifugal force to avoid disassembly and maintenance; the spring 57 and the connecting rod 59 control the opening and closing range of the protective component 5 when the hot melt glue gun 4 is raised and lowered, ensuring that the unblocking action and the spraying process do not interfere with each other, thereby significantly improving production efficiency and equipment utilization rate.

[0030] On the basis of the above-mentioned embodiment, the above-mentioned push-pull telescopic machine 551 can select structures such as a cylinder, an oil cylinder, a motor with a lifting rod, etc., which is not limited in this embodiment.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should 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 mounting plate through a support plate 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 shaft mounting portion of the hot melt glue gun to be inserted into the outside of the hot melt glue gun, or rotate 90° counterclockwise along the shaft mounting portion of the hot melt glue gun to be 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.

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 of the lifting assembly. 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 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 via the rotating bracket; A spring is sleeved on the outside of the connecting rod, and two ends of the spring respectively contact the bottom of the support plate and the top of the rotating bracket.

9. A hot melt adhesive bonding device for a power battery as claimed in claim 8, characterized in that: 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.

10. 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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