Adjustable hot melt glue output of hot melt glue gun

Abstract

The present application relates to hot melt adhesive gun technical field, and disclose a kind of adjustable hot melt adhesive glue output quantity's hot melt adhesive gun, the outer wall of gun body is fixedly connected with placing rack, another end of placing rack is fixedly connected with placing seat corresponding to the front end of gun body, the inside of gun body is provided with gun rest, one end of the inside of gun rest is fixedly connected with gun barrel corresponding to gun head, the inside of gun rest is provided with melt glue seat corresponding to the rear end of gun barrel, the inside of gun rest is provided with extrusion seat corresponding to the rear end of melt glue seat, the lower end of gun body is provided with gun switch, gun switch is located in the inside of gun body and extrusion seat is movably connected together, setting on the upper end of gun rest press button, there is extrusion device for extruding hot melt adhesive and adjusting device for controlling the up and down direction of extrusion device;Caliber adjusting device for adjusting the size of hot melt adhesive outlet is set in the inside of gun rest and located at the front end of gun barrel, the upper end of gun body is not only completed to extrude the pressure intensity of internal hot melt adhesive, completes caliber change at the front end of gun body muzzle.

Description

Technical Field

[0001] This invention relates to the field of hot melt glue gun technology, specifically a hot melt glue gun with adjustable hot melt glue dispensing volume. Background Technology

[0002] A hot melt glue gun is a finishing tool primarily used for bonding products with hot melt adhesive strips. It features precise dispensing and a variety of nozzles to meet the requirements of different production lines. Its unique filter design facilitates cleaning. Generally, hot melt glue guns will not deform even after prolonged use at 300℃, and the connectors are durable. Furthermore, the gun body is made of imported materials, ensuring high-temperature resistance and preventing deformation even under prolonged high-temperature use. The gun is also lightweight, allowing for easy and flexible operation. A unique protective design prevents accidental burns to operators; the universal joint incorporates advanced European technology, ensuring smooth operation and durability; and multiple dispensing methods, including spiral, strip, dot, mist, and fibrous dispensing, provide a variety of options for different industries.

[0003] For example, Chinese patent CN219965457U discloses a hot melt glue gun with adjustable glue dispensing capacity. The hot melt chamber has a dispensing end and a glue inlet end. The dispensing nozzle includes a guide port and a nozzle head. The guide port is connected to the dispensing end, and a baffle is provided at the upper part of the guide port to reduce the glue dispensing area. The baffle is slidably connected to the dispensing end. By adjusting the position of the baffle, it can switch between a retracted state where the upper part of the guide port is retracted and an extended state where a portion of the baffle extends into the guide port, thereby adjusting the glue dispensing capacity. This application has the advantage of allowing real-time adjustment during the hot melt glue gun's outward extrusion of hot glue, eliminating the need to replace the dispensing nozzle and improving work efficiency.

[0004] For example, Chinese patent CN217888520U discloses a hot melt glue gun with adjustable dispensing volume. The bottom of the first drive box extends into the interior of the gun barrel, and a second drive box is fixedly connected to the bottom of the first drive box. This utility model solves the problem that most hot melt glue guns on the market have a uniform dispensing volume design, but different dispensing volumes of hot melt glue are required for different usage environments. For better and more convenient work, people have to buy multiple hot melt glue guns with different dispensing volumes at the same time.

[0005] However, adjusting the dispensing size of a hot melt glue gun is different. For example, in Comparative Document 1, the user only needs to manually rotate the free end of the screw to move the baffle. By adjusting the position of the baffle, part of the guide port area is blocked, thus reducing the glue dispensing area and adjusting the glue dispensing volume. This allows for quick and easy adjustment. However, driving the baffle's movement can be affected by external factors, such as internal expansion of the hot melt glue gun blocking the baffle's movement, making it impossible to adjust the size at the nozzle. In contrast, in Comparative Document 2, the operator needs to... Pressing the movable block by hand rotates the first threaded rod, which in turn rotates the second threaded rod via a bevel gear. Since the sleeve is threadedly connected to the second threaded rod, the sleeve moves to the right, which in turn moves the adjusting block to the right. The diameter of the adjusting block is the same as the inner diameter of the right end of the gun barrel. As the adjusting block moves to the right, the right end of the inner wall of the gun barrel is gradually blocked, thereby reducing the glue output of the hot melt glue gun. However, if the operation is improper, such as the entire right end of the gun barrel being blocked, it may block the entire glue output of the hot melt glue gun, causing the hot melt glue to be unable to be sprayed. Therefore, a hot melt glue gun with adjustable glue output is proposed. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a hot melt glue gun with adjustable hot melt glue dispensing volume, thus solving the aforementioned problems.

[0008] (II) Technical Solution

[0009] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a hot melt glue gun with adjustable glue dispensing capacity, comprising a gun body, a placement seat, a placement frame, a gun holder, a gun barrel, a melting glue seat, and an extrusion seat. The placement frame is fixedly connected to the outer wall of the gun body, and the other end of the placement frame is fixedly connected to the placement seat corresponding to the front end of the gun body. The gun holder is disposed inside the gun body, and the gun barrel is fixedly connected to one end of the gun holder corresponding to the gun head. The melting glue seat is disposed inside the gun holder corresponding to the rear end of the gun barrel, and an extrusion seat is disposed inside the gun holder corresponding to the rear end of the melting glue seat. A gun switch is disposed at the lower end of the gun body, and the gun switch is located inside the gun body and movably connected to the extrusion seat. The invention is characterized by further comprising:

[0010] A three-pronged push-button is located on the upper part of the gun holder to adjust the amount of hot melt adhesive dispensed.

[0011] The structure located inside the gun holder at the top of the hot melt base is used to compress the hot melt adhesive. It includes a compression device for compressing the hot melt adhesive and an adjustment device for controlling the up and down direction of the compression device.

[0012] A caliber adjustment device located inside the gun mount at the front of the barrel to adjust the amount of hot melt adhesive exiting.

[0013] Preferably, the lower ends of the three pressing buckles are movably connected to pressing seats, and the lower ends of the three pressing seats are fixedly connected to fixing plates. The fixing plates are fixedly connected to the upper end of the gun frame. The upper end of the pressing buckle is spherical, and the lower end of the pressing buckle is rod-shaped. The pressing buckle and the pressing seat are movably connected by a third spring. The lower end of the pressing buckle passes through the pressing seat and the fixing plate and extends into the gun frame.

[0014] Preferably, the extrusion device includes a rotating base, a rotating sleeve, a rotating wheel, a second rotating wheel, a threaded column, a threaded sleeve, an extrusion barrel, a support column, an extrusion rod, and an extrusion cap. Two rotating bases are fixedly connected to the lower ends of the two pressing buckles on the inner wall of the gun body, and rotating sleeves are movably connected to the upper ends of the two rotating bases. A rotating wheel is movably connected inside the rotating sleeve, and the upper ends of the two rotating wheels correspond to the two pressing buckles. An extrusion barrel is provided on the upper end of the melt base corresponding to the side end of the rotating base. A support column is fixedly connected to the middle position inside the extrusion barrel, and an extrusion rod is movably connected inside the support column. An extrusion cap is movably connected to the upper end of the extrusion barrel, and a threaded sleeve is fixedly connected to the upper end of the extrusion barrel. A threaded column is movably connected to the upper end of the extrusion cap, and the threaded column is threadedly connected to the threaded sleeve. A second rotating wheel is fixedly connected to the upper end of the threaded column, and the second rotating wheel is arranged parallel to the two rotating wheels.

[0015] Preferably, multiple extension plates are fixedly connected to the outer walls of the two rotating sleeves, and the multiple extension plates are distributed in a ring at intervals on the outer walls of the rotating sleeves. A sliding groove is provided on the inner wall of the rotating sleeve, and a V-shaped groove is provided on the inner wall of the rotating sleeve corresponding to the lower end of the sliding groove. The V-shaped groove is located between every two sliding grooves. A locking block is fixedly connected to the outer wall of the rotating wheel, and the locking block is movably engaged with the sliding groove. The lower end of the rotating wheel is movably connected to the rotating sleeve through a spring.

[0016] Preferably, one end of the support column is provided with a through slot, and the extrusion rod is provided with an adjustment groove corresponding to the position of the through slot. An adjustment rod is movably connected to both the support column and the through slot. A thin rod is provided in the middle of the adjustment rod, and the thin rod is inclined. The two ends of the adjustment rod are square-shaped, and the outer sides of the two ends of the square shape are inclined. The two ends of the adjustment rod are symmetrically arranged. The through slot corresponds to the overall thickness of the adjustment rod, and the adjustment groove corresponds to the thickness of the thin rod of the adjustment rod. The upper end of the extrusion rod is fixedly connected to the inner wall of the extrusion cap by a second spring.

[0017] Preferably, two trapezoidal blocks are fixedly connected to both sides of the inner wall of the extrusion cap, and the two trapezoidal blocks are arranged symmetrically, with the two trapezoidal blocks respectively fitting together with the inclined ends of the two sides of the adjusting rod.

[0018] Preferably, the adjusting device includes an adjusting block, an adjusting plate, a supporting plate, and an extrusion plate. The adjusting plate is fixedly connected to the upper end of the hot melt adhesive base inside the gun body, and a moving groove is provided on the adjusting plate. The upper end of the adjusting plate is movably connected to the supporting plate. The lower end of the extrusion rod passes through the supporting plate and the moving groove and extends to the lower end. The adjusting block is movably inserted into the side end of the gun body, and one end of the adjusting block passes through the interior and is fixedly connected to the side end of the supporting plate. The lower end of the extrusion rod is movably connected to the extrusion plate, and the extrusion plate is bonded to the hot melt adhesive.

[0019] Preferably, the caliber adjustment device includes a support plate, caliber adjustment blocks, a caliber adjustment disc, a movable disc, and a connecting line. The support plate is fixedly connected to the inner wall of the gun body corresponding to the front end of the barrel, and six caliber adjustment blocks are provided at the rear end of the support plate. The caliber adjustment disc is movably connected to the rear end of the support plate and fits against the barrel. The movable disc is movably connected to the barrel through a torsion spring, and the connecting line is movably wound on the movable disc. One end of the connecting line is fixedly connected to the lower end of the caliber adjustment disc, and the other end of the connecting line is fixedly connected to the middle pressing buckle along the upper end of the gun frame.

[0020] Preferably, the rear end face of the support plate is provided with a hexagonal limiting groove, and six caliber adjustment blocks are arranged around the barrel as the center. The front end of the six caliber adjustment blocks is fixedly connected to a limiting block, and the limiting block is movably engaged with the limiting groove. The rear end of the six caliber adjustment blocks is fixedly connected to a limiting post.

[0021] Preferably, a friction groove is provided on the side wall of the caliber adjustment disc, and the outer wall of the caliber adjustment disc extends to the outer end of the gun body. The caliber adjustment disc has six movable grooves at the position corresponding to the limiting post, and the limiting post and the six movable grooves are movably engaged together.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, the present invention provides a hot melt glue gun with adjustable hot melt glue dispensing volume, which has the following beneficial effects:

[0024] 1. This adjustable hot melt glue gun uses three pressing buckles at the top of the gun body to not only compress the internal hot melt glue to change the amount of hot melt glue dispensed, but also to change the diameter of the nozzle at the front of the gun body, thereby changing the amount of hot melt glue dispensed.

[0025] 2. The adjustable hot melt glue gun has two rotating wheels in the extrusion device. The two rotating wheels correspond to two pressing buckles, so that the two rotating wheels drive the extrusion rod in the extrusion barrel to move the hot melt glue up and down, thereby generating pressure on the hot melt glue.

[0026] 3. This type of hot melt glue gun with adjustable hot melt glue dispensing uses two rotating wheels with two opposite rotation directions to change the up-and-down movement direction of the extrusion rod.

[0027] 4. This type of hot melt glue gun with adjustable hot melt glue dispensing can move the extrusion barrel on the adjustment plate through the adjustment device, thereby using the adjustment block to move the extrusion barrel to the corresponding rotating wheels on the left and right sides of the pressing buckle and engage with them, so that the pressure of the hot melt glue can be changed during the rotation.

[0028] 5. This type of hot melt glue gun with adjustable hot melt glue dispensing capacity has an adjusting rod inserted horizontally in the extrusion rod. The adjusting rod and the trapezoidal block between them are squeezed together, and the shape of the adjusting rod changes the left and right movement direction of the adjusting rod, so that the extrusion rod moves by moving the adjusting rod.

[0029] 6. This type of hot melt glue gun with adjustable hot melt glue dispensing capacity utilizes the connection between the diameter adjustment disc and the diameter adjustment block through a diameter adjustment device. The rotation of the diameter adjustment disc causes the diameter adjustment block to move, and the mutual movement of the six diameter adjustment blocks changes the size of the gun nozzle, thereby changing the dispensing capacity.

[0030] 7. This type of hot melt glue gun with adjustable hot melt glue dispensing capacity uses a central pressing buckle connected to a movable disc via a connecting wire. Utilizing the roller principle, the wire is pulled, causing the diameter adjustment disc to rotate, thereby adjusting the diameter of the dispensing block and thus completing the diameter adjustment. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0032] Figure 2 This is a schematic diagram of the exploded view of the casing of the present invention.

[0033] Figure 3 This is a schematic diagram of the internal structure of the gun mount of the present invention;

[0034] Figure 4 This is a schematic diagram of the upper fixing plate of the gun mount of the present invention;

[0035] Figure 5 This is an exploded view of the snap fastener of the present invention;

[0036] Figure 6 This is a schematic diagram showing the connection between the press buckle and the pressing device of the present invention;

[0037] Figure 7 This is a schematic diagram of the internal structure of the rotating sleeve of the present invention;

[0038] Figure 8 This is a schematic diagram of the inside of the extrusion barrel of the present invention;

[0039] Figure 9 This is a schematic diagram of the adjusting device of the present invention;

[0040] Figure 10 This is a schematic diagram of the internal extrusion plate of the gun mount of the present invention;

[0041] Figure 11 This is a schematic diagram of the aperture adjustment device of the present invention;

[0042] Figure 12 This is an exploded view of the aperture adjustment device of the present invention;

[0043] Figure 13 This is a schematic diagram of the aperture adjustment block of the present invention.

[0044] In the diagram: 1. Gun body; 2. Placement seat; 3. Placement frame; 4. Gun mount; 5. Gun barrel; 6. Melting base; 7. Extrusion seat; 8. Pressing buckle; 9. Pressing seat; 10. Fixing plate; 11. Third spring; 12. Rotating base; 13. Rotating sleeve; 14. Rotating wheel; 15. Second rotating wheel; 16. Threaded post; 17. Threaded sleeve; 18. Extrusion barrel; 19. Support column; 20. Extrusion rod; 21. Extrusion cap; 22. Extension plate; 23. Slide groove; 24. V 25. Slot; 26. Locking block; 27. Through slot; 28. Adjusting slot; 29. ​​Adjusting rod; 30. Spring; 31. Second spring; 32. Trapezoidal block; 33. Adjusting block; 34. Adjusting plate; 35. Support plate; 36. Extrusion plate; 37. Support plate; 38. Diameter adjusting block; 39. Diameter adjusting plate; 40. Movable plate; 41. Connecting line; 42. Limiting slot; 43. Limiting block; 44. Movable slot; 45. Moving slot. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Please see Figure 1-13A hot melt glue gun with adjustable dispensing capacity includes a gun body 1, a placement seat 2, a placement frame 3, a gun holder 4, a gun barrel 5, a melting base 6, and an extrusion base 7. The placement frame 3 is fixedly connected to the outer wall of the gun body 1, and the placement seat 2 is fixedly connected to the other end of the placement frame 3 corresponding to the front end of the gun body 1. The gun holder 4 is disposed inside the gun body 1, and the gun barrel 5 is fixedly connected to one end of the gun holder 4 corresponding to the gun head. The melting base 6 is disposed inside the gun holder 4 corresponding to the rear end of the gun barrel 5, and the extrusion base 7 is disposed inside the gun holder 4 corresponding to the rear end of the melting base 6. A gun switch is disposed at the lower end of the gun body 1, and the gun switch is located inside the gun body 1 and movably connected to the extrusion base 7. The gun body 1 is characterized by further comprising:

[0047] A three-pronged push button 8 is provided on the upper end of the gun holder 4 to adjust the amount of hot melt adhesive dispensed.

[0048] The structure located inside the gun holder 4 at the upper end of the melt base 6 is used to compress the hot melt adhesive. It includes a compression device for compressing the hot melt adhesive and an adjustment device for controlling the up and down direction of the compression device.

[0049] A caliber adjustment device is installed inside the gun holder 4 at the front end of the barrel 5 to adjust the output of hot melt adhesive. The front end of the gun body 1 is equipped with a placement seat 2 via a placement bracket 3, with the center of the placement seat 2 corresponding to the gun head end of the gun body 1. This ensures that the hot melt adhesive sprayed from the gun body 1 aligns with the placement seat 2. Pressing a switch at the lower end of the gun body 1 pushes the extrusion seat 7 inside the gun holder 4 towards one end of the gun head, causing the hot melt adhesive in the centrally placed melt adhesive seat 6 to be pushed by the extrusion seat 7 into the barrel 5, where it is then sprayed out. This device allows for adjustment of the hot melt adhesive output. By pressing down two of the three pressing buckles 8, the pressure of the extrusion device on the hot melt adhesive is controlled, so that the hot melt adhesive is extruded from multiple directions during the process of pushing the hot melt adhesive, resulting in a larger output of hot melt adhesive. The extrusion device can be connected to the pressing buckles 8 on both sides through the adjustment device, and the size of the nozzle of the gun body 1 can be adjusted through the caliber adjustment device. Alternatively, the caliber adjustment device can be rotated by the downward pressure of the middle pressing buckle 8, thereby changing the size of the nozzle. Thus, the output of hot melt adhesive from the gun body 1 can be varied according to the user's adjustment.

[0050] The lower ends of the three push-button buckles 8 are movably connected to push-button seats 9, and the lower ends of the three push-button seats 9 are fixedly connected to fixing plates 10. Fixing plates 10 are fixedly connected to the upper end of the gun frame 4. The upper end of the push-button buckle 8 is spherical, and the lower end of the push-button buckle 8 is rod-shaped. The push-button buckle 8 and the push-button seat 9 are movably connected by a third spring 11. The lower end of the push-button buckle 8 passes through the push-button seat 9 and the fixing plate 10 and extends into the gun frame 4. Three push-button buckles 8 are provided at the upper end of the gun body 1. By pressing the push-button buckles 8 at both ends, the push-button buckles 8 move downward in the push-button seat 9. After moving downward, the push-button buckles 8 will extend into the gun frame 4. When there is no pressing force, the push-button buckles 8 will spring back to the upper end of the push-button seat 9 by the third spring 11.

[0051] The extrusion device includes a rotating base 12, a rotating sleeve 13, a rotating wheel 14, a second rotating wheel 15, a threaded column 16, a threaded sleeve 17, an extrusion barrel 18, a support column 19, an extrusion rod 20, and an extrusion cap 21. Two rotating bases 12 are fixedly connected to the lower ends of the two side pressing buckles 8 on the inner wall of the gun body 1. The upper ends of the two rotating bases 12 are movably connected to the rotating sleeve 13, and the rotating wheel 14 is movably connected inside the rotating sleeve 13. The upper ends of the two rotating wheels 14 correspond to the two pressing buckles 8. An extrusion barrel 18 is provided on the upper end of the melt base 6 corresponding to the side end of the rotating base 12. A support column 19 is fixedly connected to the middle position inside the extrusion barrel 18, and an extrusion rod 20 is movably connected inside the support column 19. An extrusion cap 21 is movably connected to the upper end of the extrusion barrel 18. The upper end of 18 is fixedly connected to a threaded sleeve 17, and the upper end of the extrusion cap 21 is movably connected to a threaded post 16, which is threadedly connected to the threaded sleeve 17. The upper end of the threaded post 16 is fixedly connected to a second rotating wheel 15, which is arranged parallel to the two rotating wheels 14. When hot melt adhesive is placed into the melt base 6, it is pressed by pressing with a pressing buckle 8. The lower end of the pressing buckle 8 moves down and presses the rotating wheel 14. After the rotating wheel 14 moves down, the inner wall of the rotating sleeve 13 has a sliding groove 23, which allows the locking block 25 on the rotating wheel 14 to slide in the sliding groove 23. When the locking block 25 moves down to the lower end, it will slowly rotate the V-groove 24. When it moves to the lowest end, the middle position of the V-groove 24 will be aligned with the locking block 25. Alignment causes the rotating sleeve 13 to rotate slightly, engaging the extension plate 22 on the rotating sleeve 13 with the second rotating wheel 15. This rotation of the second rotating wheel 15 causes the threaded column 16 to rotate. The outer end of the threaded column 16 is provided with a threaded sleeve 17 connected to the extrusion barrel 18. As the threaded column 16 rotates, it gradually moves downward within the threaded sleeve 17. This downward movement causes the second rotating wheel 15 to move downward, while the second rotating wheel 15 remains engaged with the extension plate 22. The downward movement of the threaded column 16 causes the extrusion cap 21 to move downward within the extrusion barrel 18. The extrusion cap 21, after being pressed down, moves downward through the trapezoidal blocks 31 on both sides. The trapezoidal blocks 31, by pressing down, cause the adjusting rod 2 in the middle to move downward. 8. As the trapezoidal block 31 is pressed down, it moves left and right, while the middle adjusting rod 28 is in an inclined state. The left and right movement of the adjusting rod 28, and the limited up and down movement of the middle extrusion rod 20 in the support column 19, cause the extrusion rod 20 to move upward due to the left and right movement of the adjusting rod 28. This causes the extrusion rod 20 to drive the extrusion plate 35 upward, without extruding the hot melt adhesive. When it is necessary to increase the output of hot melt adhesive, the adjusting device uses the adjusting block 32 to press inward at the outer end of the gun body 1. This causes the adjusting block 32 to drive the support plate 34 to move on the adjusting plate 33, moving the extrusion barrel 18 to the pressing buckle 8 at the other end. This causes the other pressing buckle 8 to press down, causing the lower rotating wheel 14 to press down, causing the rotating sleeve 13 to rotate in the opposite direction.This causes the rotating sleeve 13 to drive the extension plate 22, causing the second rotating wheel 15 to rotate in the opposite direction. This, in turn, causes the threaded column 16 to rotate in the opposite direction, gradually moving the extrusion cap 21 upwards. Consequently, the extrusion rod 20 moves downwards, and the downward movement of the extrusion rod 20 causes the extrusion plate 35 to extrude the hot melt adhesive, increasing the internal pressure of the hot melt adhesive. This, in turn, results in a larger output of hot melt adhesive during the extrusion process by the extrusion seat 7.

[0052] Multiple extension plates 22 are fixedly connected to the outer walls of the two rotating sleeves 13, and the multiple extension plates 22 are distributed in a ring at intervals on the outer walls of the rotating sleeves 13. A sliding groove 23 is provided on the inner wall of the rotating sleeve 13, and a V-shaped groove 24 is provided on the inner wall of the rotating sleeve 13 corresponding to the lower end of the sliding groove 23. The V-shaped groove 24 is located between every two sliding grooves 23. A locking block 25 is fixedly connected to the outer wall of the rotating wheel 14, and the locking block 25 is movably engaged with the sliding groove 23. The lower end of the rotating wheel 14 is movably connected to the rotating sleeve 13 through a spring 29.

[0053] One end of the support column 19 is provided with a through slot 26, and the extrusion rod 20 is provided with an adjustment groove 27 corresponding to the position of the through slot 26. An adjustment rod 28 is movably connected to both the support column 19 and the through slot 26. A thin rod is provided in the middle of the adjustment rod 28, and the thin rod is inclined. The two ends of the adjustment rod 28 are square-shaped, and the outer sides of the two ends of the square shape are inclined. The two ends of the adjustment rod 28 are symmetrically arranged. The overall thickness of the through slot 26 and the adjustment rod 28 corresponds to the thickness of the thin rod of the adjustment rod 28. The upper end of the extrusion rod 20 is fixedly connected to the inner wall of the extrusion cap 21 by the second spring 30.

[0054] Two trapezoidal blocks 31 are fixedly connected to both sides of the inner wall of the extrusion cap 21, and the two trapezoidal blocks 31 are arranged symmetrically. The two trapezoidal blocks 31 are respectively attached to the inclined ends of the two sides of the adjusting rod 28.

[0055] The adjustment device includes an adjustment block 32, an adjustment plate 33, a support plate 34, and an extrusion plate 35. The adjustment plate 33 is fixedly connected to the upper end of the glue melting base 6 inside the gun body 1, and a moving groove 45 is provided on the adjustment plate 33. The upper end of the adjustment plate 33 is movably connected to the support plate 34, and the lower end of the extrusion rod 20 passes through the support plate 34 and the moving groove 45 and extends to the lower end. The adjustment block 32 is movably inserted into the side end of the gun body 1, and one end of the adjustment block 32 passes through the interior and is fixedly connected to the side end of the support plate 34. The lower end of the extrusion rod 20 is movably connected to the extrusion plate 35, and the extrusion plate 35 is in contact with the hot melt adhesive. When it is necessary to adjust and change the moving direction of the extrusion rod 20, the adjustment device uses the adjustment block 32 to press inward at the outer end of the gun body 1, so that the adjustment block 32 drives the support plate 34 to move on the adjustment plate 33, so that the extrusion barrel 18 moves to the pressing buckle 8 at the other end, so that the other pressing buckle 8 is pressed down.

[0056] The caliber adjustment device includes a support plate 36, caliber adjustment blocks 37, a caliber adjustment disc 38, a movable disc 39, and a connecting line 40. The support plate 36 is fixedly connected to the inner wall of the gun body 1 corresponding to the front end of the barrel 5. Six caliber adjustment blocks 37 are provided at the rear end of the support plate 36, and the caliber adjustment disc 38 is movably connected to the rear end of the support plate 36. The caliber adjustment disc 38 is in contact with the barrel 5, and the movable disc 39 is movably connected to the barrel 5 via a torsion spring. The connecting line 40 is movably wound around the movable disc 39. One end of the connecting line 40 is fixedly connected to the lower end of the caliber adjustment disc 38, and the other end of the connecting line 40 is fixedly connected to the middle pressing buckle 8 along the upper end of the gun mount 4. When it is necessary to change the muzzle caliber to change the output, the caliber adjustment disc 38 can be rotated from the outer end of the gun body 1 near the muzzle, thus rotating the caliber adjustment blocks 37. Limiting blocks 42 and limiting posts 43 are respectively installed on both sides. The limiting groove 41 on the support plate 36 is engaged with the limiting block 42, so that the caliber adjustment block 37 can only move in the limiting groove 41. The limiting post 43 is engaged with the movable groove 44 in the caliber adjustment plate 38, so that after the caliber adjustment plate 38 is rotated, it can drive the caliber adjustment block 37 to move in the limiting groove 41. After the six caliber adjustment blocks 37 move in the limiting groove 41, the position of the middle caliber adjustment block 37 can be changed, thereby changing the caliber size. When it is inconvenient to rotate using the position of the outer end of the gun body 1, it can also be pressed by pressing the middle pressing buckle 8. The lower end of the pressing port 8 pulls the connecting line 40, causing the movable plate 39 around the connecting line 40 to rotate, thereby rotating the caliber adjustment plate 38 at the other end of the connecting line 40, thereby moving the caliber adjustment block 37, thereby changing the caliber size and changing the amount of hot melt adhesive.

[0057] The rear end face of the support plate 36 is provided with a hexagonal limiting groove 41, and six caliber adjustment blocks 37 are arranged around the barrel 5. The front end of the six caliber adjustment blocks 37 is fixedly connected to a limiting block 42, and the limiting block 42 is movably engaged with the limiting groove 41. The rear end of the six caliber adjustment blocks 37 is fixedly connected to a limiting post 43.

[0058] A friction groove is provided on the side wall of the caliber adjustment plate 38, and the outer wall of the caliber adjustment plate 38 extends to the outer end of the gun body 1. The caliber adjustment plate 38 has six movable grooves 44 at the position corresponding to the limiting post 43, and the limiting post 43 and the six movable grooves 44 are movably engaged together.

[0059] Working principle: The front end of the gun body 1 is equipped with a placement seat 2 via a placement bracket 3, and the center of the placement seat 2 corresponds to the gun head end of the gun body 1, so that the hot melt adhesive sprayed from the gun body 1 corresponds to the placement seat 2. By pressing the switch at the lower end of the gun body 1, the extrusion seat 7 inside the gun frame 4 is pushed towards one end of the gun head, which pushes the hot melt adhesive in the middle hot melt adhesive seat 6 into the gun barrel 5, causing the hot melt adhesive to be sprayed out from the gun barrel 5. When it is necessary to adjust the amount of hot melt adhesive, two of the three pressing buttons 8 are pressed. Pressing button 8 downwards controls the pressure of the extrusion device on the hot melt adhesive, allowing for a larger output of hot melt adhesive through multi-directional extrusion during the pushing process. The extrusion device can be connected to the two sides of the pressing button 8 via the adjustment device, and the size of the nozzle at the gun body 1 can be adjusted via the caliber adjustment device. Alternatively, pressing button 8 in the middle can rotate the caliber adjustment device by applying downward pressure, thus changing the size of the nozzle. This allows the output of hot melt adhesive from the gun body 1 to be adjusted according to the user's preferences.

[0060] After the hot melt adhesive is placed into the melt base 6, it is pressed down using the pressing buckle 8. The lower end of the pressing buckle 8 moves down and presses down on the rotating wheel 14. As the rotating wheel 14 moves downward, the inner wall of the rotating sleeve 13 has a sliding groove 23, allowing the locking block 25 on the rotating wheel 14 to slide within the groove 23. When the locking block 25 reaches its lower end, it slowly rotates the V-groove 24. When it reaches the lowest point, the middle position of the V-groove 24 aligns with the locking block 25, causing the rotating sleeve 13 to rotate slightly. This causes the extension plate 22 on the rotating sleeve 13 to engage with the second rotating wheel 15, finally causing the second rotating wheel 15 to rotate. The rotation of the second rotating wheel 15 causes the threaded column 16 to rotate. The outer end of the threaded column 16 is provided with a threaded sleeve 17 connected to the extrusion barrel 18, thus allowing the threaded column 16 to rotate. The threaded rod 16 gradually moves downward in the threaded sleeve 17. After moving downward, the threaded rod 16 will drive the second rotating wheel 15 to move downward, but the second rotating wheel 15 will still be engaged with the extension plate 22. After moving downward, the threaded rod 16 will drive the extrusion cap 21 to move downward in the extrusion barrel 18. After being pressed down, the extrusion cap 21 will move downward through the trapezoidal blocks 31 on both sides. The trapezoidal blocks 31 on both sides will cause the middle adjusting rod 28 to move left and right as the trapezoidal blocks 31 are pressed down. The middle adjusting rod 28 is in an inclined state. The left and right movement of the adjusting rod 28 and the middle extrusion rod 20 are limited to move up and down in the support column 19, so that the extrusion rod 20 is moved upward by the left and right movement of the adjusting rod 28, so that the extrusion rod 20 drives the extrusion plate 35 to move upward. It will not extrude the hot melt adhesive, so it will not change the amount of hot melt adhesive output.

[0061] When it is necessary to increase the output of hot melt adhesive, the adjusting block 32 is pressed inward at the outer end of the gun body 1 by the adjusting device. The adjusting block 32 drives the support plate 34 to move on the adjusting plate 33, so that the extrusion barrel 18 moves to the pressing buckle 8 at the other end. The other pressing buckle 8 is pressed down, so that the lower end of the rotating wheel 14 is pressed down, so that the rotating sleeve 13 rotates in the opposite direction. This causes the rotating sleeve 13 to drive the extension plate 22 to rotate the second rotating wheel 15 in the opposite direction, so that the threaded column 16 rotates in the opposite direction, so that the extrusion cap 21 gradually moves upward, so that the extrusion rod 20 moves downward. The downward movement of the extrusion rod 20 causes the extrusion plate 35 to extrude the hot melt adhesive, so that the internal pressure of the hot melt adhesive is greater, so that the output of hot melt adhesive is greater during the extrusion process of the extrusion seat 7.

[0062] Another method is to change the output by altering the muzzle caliber. First, the caliber adjustment disc 38 can be rotated near the muzzle on the outer end of the gun body 1. The caliber adjustment block 37 has limit blocks 42 and limit posts 43 on either side. The limit groove 41 on the support plate 36 engages with the limit blocks 42, restricting the movement of the caliber adjustment block 37 to the limit groove 41. The limit posts 43 engage with the movable groove 44 in the caliber adjustment disc 38, allowing the caliber adjustment disc 38 to rotate and adjust the caliber. Block 37 moves within the limiting groove 41. After the six caliber adjustment blocks 37 move within the limiting groove 41, the position of the middle caliber adjustment block 37 can be changed to alter the caliber. When it is inconvenient to rotate the gun body 1 using the outer end, the middle pressing buckle 8 can be pressed to pull the connecting line 40, causing the movable disc 39 wound around the connecting line 40 to rotate. This, in turn, rotates the caliber adjustment disc 38 at the other end of the connecting line 40, thereby moving the caliber adjustment block 37 to change the caliber and the amount of hot melt adhesive dispensed.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot melt glue gun with adjustable hot melt glue dispensing capacity, comprising a gun body (1), a placement seat (2), a placement frame (3), a gun holder (4), a gun barrel (5), a melt glue seat (6), and an extrusion seat (7), wherein the placement frame (3) is fixedly connected to the outer wall of the gun body (1), and the placement seat (2) is fixedly connected to the other end of the placement frame (3) corresponding to the front end of the gun body (1), and the gun holder (4) is provided inside the gun body (1), and the gun barrel (5) is fixedly connected to one end of the gun holder (4) corresponding to the gun head, and the melt glue seat (6) is provided inside the gun holder (4) corresponding to the rear end of the gun barrel (5), and the extrusion seat (7) is provided inside the gun holder (4) corresponding to the rear end of the melt glue seat (6), and a gun switch is provided at the lower end of the gun body (1), the gun switch being located inside the gun body (1) and movably connected to the extrusion seat (7), characterized in that: It also includes: a press buckle (8) set on the upper end of the gun holder (4) for adjusting the amount of hot melt adhesive dispensed, wherein the press buckle (8) includes three; The structure located inside the gun holder (4) at the upper end of the melt base (6) for pressing hot melt adhesive includes a pressing device for pressing hot melt adhesive and an adjustment device for controlling the up and down direction of the pressing device. A caliber adjustment device is installed inside the gun mount (4) at the front end of the gun barrel (5) to adjust the amount of hot melt adhesive exiting; The extrusion device includes a rotating base (12), a rotating sleeve (13), a rotating wheel (14), a second rotating wheel (15), a threaded column (16), a threaded sleeve (17), an extrusion barrel (18), a support column (19), an extrusion rod (20), and an extrusion cap (21). Two rotating bases (12) are fixedly connected to the lower ends of the two pressing buckles (8) on the inner wall of the gun body (1). A rotating sleeve (13) is movably connected to the upper ends of the two rotating bases (12), and a rotating wheel (14) is movably connected inside the rotating sleeve (13). The upper ends of the two rotating wheels (14) correspond to the two pressing buckles (8), and the upper end of the melt base (6) corresponds to the rotating base (12). 2) A squeezing barrel (18) is provided on the side end, and a support column (19) is fixedly connected to the middle position inside the squeezing barrel (18). A squeezing rod (20) is movably connected inside the support column (19). A squeezing cap (21) is movably connected to the upper end of the squeezing barrel (18). A threaded sleeve (17) is fixedly connected to the upper end of the squeezing barrel (18). A threaded column (16) is movably connected to the upper end of the squeezing cap (21). The threaded column (16) is threadedly connected to the threaded sleeve (17). A second rotating wheel (15) is fixedly connected to the upper end of the threaded column (16). The second rotating wheel (15) is arranged parallel to the two rotating wheels (14). Multiple extension plates (22) are fixedly connected to the outer walls of the two rotating sleeves (13), and the multiple extension plates (22) are distributed in a ring at intervals on the outer walls of the rotating sleeves (13). A sliding groove (23) is provided on the inner wall of the rotating sleeves (13), and a V-shaped groove (24) is provided on the inner wall of the rotating sleeves (13) corresponding to the lower end of the sliding groove (23). The V-shaped groove (24) is located between every two sliding grooves (23). A locking block (25) is fixedly connected to the outer wall of the rotating wheel (14), and the locking block (25) is movably locked together with the sliding groove (23). The lower end of the rotating wheel (14) is movably connected to the rotating sleeve (13) through a spring (29). One end of the support column (19) is provided with a through slot (26), and the extrusion rod (20) is provided with an adjustment groove (27) corresponding to the position of the through slot (26). An adjustment rod (28) is movably connected to both the support column (19) and the through slot (26). A thin rod is provided in the middle position of the adjustment rod (28), and the thin rod is inclined. The two ends of the adjustment rod (28) are square-shaped, and the outer sides of the two ends of the square shape are inclined. The two ends of the adjustment rod (28) are symmetrical. The overall thickness of the through slot (26) and the adjustment rod (28) corresponds to the thickness of the thin rod of the adjustment rod (28). The upper end of the extrusion rod (20) is fixedly connected to the inner wall of the extrusion cap (21) by a second spring (30).

2. The hot melt glue gun with adjustable hot melt glue dispensing rate according to claim 1, characterized in that: The lower ends of the three press buckles (8) are movably connected to press seats (9), and the lower ends of the three press seats (9) are fixedly connected to fixing plates (10). The fixing plates (10) are fixedly connected to the upper end of the gun frame (4). The upper end of the press buckle (8) is spherical, and the lower end of the press buckle (8) is rod-shaped. The press buckle (8) and the press seats (9) are movably connected by a third spring (11). The lower end of the press buckle (8) passes through the press seats (9) and the fixing plates (10) and extends into the gun frame (4).

3. A hot melt glue gun with adjustable hot melt glue dispensing rate according to claim 2, characterized in that: The inner wall of the extrusion cap (21) is fixedly connected to two trapezoidal blocks (31), and the two trapezoidal blocks (31) are arranged symmetrically. The two trapezoidal blocks (31) are respectively attached to the inclined ends of the two sides of the adjusting rod (28).

4. A hot melt glue gun with adjustable hot melt glue dispensing rate according to claim 1, characterized in that: The adjustment device includes an adjustment block (32), an adjustment plate (33), a support plate (34), and an extrusion plate (35). The adjustment plate (33) is fixedly connected to the upper end of the glue melting seat (6) inside the gun body (1). The adjustment plate (33) has a moving groove (45). The upper end of the adjustment plate (33) is movably connected to the support plate (34). The lower end of the extrusion rod (20) passes through the support plate (34) and the moving groove (45) and extends to the lower end. The adjustment block (32) is movably inserted into the side end of the gun body (1). One end of the adjustment block (32) passes through the interior and is fixedly connected to the side end of the support plate (34). The lower end of the extrusion rod (20) is movably connected to the extrusion plate (35). The extrusion plate (35) is bonded to the hot melt adhesive.

5. A hot melt glue gun with adjustable hot melt glue dispensing rate according to claim 2, characterized in that: The caliber adjustment device includes a support plate (36), caliber adjustment blocks (37), caliber adjustment disc (38), movable disc (39), and connecting line (40). The support plate (36) is fixedly connected to the inner wall of the gun body (1) corresponding to the front end of the barrel (5). Six caliber adjustment blocks (37) are provided at the rear end of the support plate (36). The caliber adjustment disc (38) is movably connected to the rear end of the support plate (36). The caliber adjustment disc (38) is in close contact with the barrel (5). The movable disc (39) is movably connected to the barrel (5) through a torsion spring. The connecting line (40) is movably wound on the movable disc (39). One end of the connecting line (40) is fixedly connected to the lower end of the caliber adjustment disc (38). The other end of the connecting line (40) is fixedly connected to the middle pressing buckle (8) along the upper end of the gun frame (4).

6. A hot melt glue gun with adjustable hot melt glue dispensing rate according to claim 5, characterized in that: The rear end face of the support plate (36) is provided with a hexagonal limiting groove (41), and six caliber adjustment blocks (37) are arranged around the barrel (5) in a circle. The front end of the six caliber adjustment blocks (37) is fixedly connected to a limiting block (42), and the limiting block (42) is movably engaged with the limiting groove (41). The rear end of the six caliber adjustment blocks (37) is fixedly connected to a limiting post (43).

7. A hot melt glue gun with adjustable hot melt glue dispensing rate according to claim 5, characterized in that: A friction groove is provided on the side wall of the caliber adjustment plate (38), and the outer wall of the caliber adjustment plate (38) extends to the outer end of the gun body (1). The caliber adjustment plate (38) has six movable grooves (44) at the position corresponding to the limiting post (43), and the limiting post (43) and the six movable grooves (44) are movably engaged together.

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