Glue gun structure

Abstract

The utility model provides a glue gun structure which comprises a gun base module, an ejector pin assembly, a first elastic piece, an adjusting rod, a coil assembly, an adjusting cap and second clamping structures, a containing cavity and a glue outlet communicated with the containing cavity are formed in the gun base module, and a plurality of first clamping structures are arranged on the outer side of the gun base module in the circumferential direction; the ejector pin assembly is arranged in the containing cavity. The first elastic piece is arranged in the accommodating cavity; one end of the adjusting rod is inserted into the containing cavity in a rotatable and movable adjusting mode and located on one side of the ejector pin assembly. The coil assembly is arranged in the containing cavity and arranged on the ejector pin assembly in a sleeving mode. The adjusting cap is fixedly connected with the other end of the adjusting rod, and a mounting cavity is formed in the adjusting cap; the second clamping structure is movably arranged in the mounting cavity, and the adjusting cap rotates and drives the second clamping structure, so that the connection state between the second clamping structure and the first clamping structure is continuously switched between clamping and separation. The glue gun structure disclosed by the utility model can realize accurate gear adjustment.

Description

Technical Field

[0001] This utility model relates to the field of adhesive application technology, and in particular to a glue gun structure. Background Technology

[0002] A glue gun is a tool used for precise glue application. Its core function is to extrude and evenly spread glue onto the target surface through mechanical or power-driven means. Some existing glue guns use solenoid valves to drive needle valves for glue flow and stop. For example, Chinese patent CN222174656U discloses an internal drive assembly for an electronic gun. This assembly uses a coil component; when energized, the coil attracts a ejector pin, causing it to overcome the elastic force of an elastic element and move away from the outlet, pressing against an adjusting rod. The adjusting rod controls the amount of ejector pin retraction, thus controlling the glue flow. When glue application is not needed, the coil is de-energized, and the ejector pin, under the elastic recovery of the elastic element, presses against the outlet and blocks it, preventing glue from being sprayed. However, when adjusting the position of the adjusting rod to control the ejector pin's retraction stroke, only numerical markings are provided on the adjusting knob and arrow markings on the gun body for the operator to adjust and understand the distance between the ejector pin and the adjusting rod. However, because the adjustment knob is stepless, operators often turn it too far or too little, making it difficult to accurately adjust the knob to the target position. This often requires repeated adjustments, resulting in slow adjustment efficiency.

[0003] Therefore, it is necessary to provide a glue gun structure that can achieve precise and efficient adjustment of gear levels in order to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a glue gun structure that enables precise adjustment of gear levels and fast adjustment speed.

[0005] To achieve the above objectives, this utility model provides a glue gun structure, including a gun base module, an ejector pin assembly, a first elastic element, an adjusting rod, a coil assembly, an adjusting cap, and a second engaging structure. The gun base module has a receiving cavity and a glue outlet communicating with the receiving cavity. Several first engaging structures are provided on the outer side of the gun base module along a circumferential direction. The ejector pin assembly is movably disposed within the receiving cavity and is used to seal the glue outlet. The first elastic element is disposed within the receiving cavity and abuts against the ejector pin assembly and the gun base module. The first elastic element provides elastic force, causing the ejector pin assembly to have a tendency to move and seal the glue outlet. The adjusting rod... One end of the device is rotatably and movablely inserted into the receiving cavity; the coil assembly is disposed in the receiving cavity and sleeved on the ejector pin assembly. When the coil assembly is energized, it attracts the ejector pin assembly, causing the ejector pin assembly to overcome the elastic force of the first elastic element and move away from the glue outlet and abut against the adjusting rod; the adjusting cap is fixedly connected to the other end of the adjusting rod, and the adjusting cap has an installation cavity; the second engaging structure is movably disposed in the installation cavity. By rotating the adjusting cap and driving the second engaging structure, the connection state between the second engaging structure and the first engaging structure is continuously switched between engaging and disengaging.

[0006] Preferably, it further includes a second elastic member disposed within the receiving cavity and abutting between the adjusting cap and the second engaging structure. The second elastic member is used to provide elastic force so that the second engaging structure tends to move and engage with the first engaging structure.

[0007] Preferably, the first engaging structure is a first tooth, the second engaging structure is a washer, and the washer is sleeved on the adjusting rod and can rotate with the adjusting rod. The outer surface of the washer is provided with a plurality of second teeth along the rotation direction of the adjusting rod, and the elastic force provided by the second elastic element is used to make the second teeth tend to engage with the first teeth.

[0008] Preferably, the first engaging structure is a groove, the second engaging structure is a ball-head plunger, and the elastic force provided by the second elastic element is used to make the ball-head plunger tend to engage with the groove.

[0009] Preferably, the gun mount module includes an adjustment seat, a gun body, a slide valve, and a nozzle connected in sequence. The cavities of the adjustment seat, the gun body, the slide valve, and the nozzle are connected to form the receiving cavity. The glue outlet is formed on the nozzle. The other end of the adjustment rod and the adjustment cap are located on one side of the adjustment seat. The first engaging structure is disposed on the outside of the adjustment seat.

[0010] Preferably, it also includes a limiting pin, wherein the adjusting seat has a limiting hole communicating with its internal cavity, the limiting pin passes through the limiting hole and extends into the cavity of the adjusting seat, and the limiting pin is used to limit the movement of the adjusting rod away from the ejector pin assembly.

[0011] Preferably, the adjusting seat is provided with a threaded hole communicating with the limiting hole, and a set bolt is provided in the threaded hole.

[0012] Preferably, one end of the limiting hole passes through the adjusting seat, and the other end of the limiting hole communicates with the threaded hole.

[0013] Preferably, a sealing ring is provided between the adjusting rod and the inner wall of the cavity of the adjusting seat.

[0014] Preferably, the coil assembly includes a coil frame and a coil body, the coil body being sleeved on the pin assembly and the coil body being wound around the coil frame.

[0015] Compared with the prior art, the glue gun structure of this utility model has a first engaging structure on the gun base module and a second engaging structure in the mounting cavity of the adjusting cap. When the adjusting cap is rotated to drive the adjusting rod to rotate, the adjusting rod will drive the second engaging structure to rotate. Under the initial engaging action of the second engaging structure and the first engaging structure of the gun base module, the second engaging structure will first move away from the first engaging structure in the mounting cavity of the adjusting cap and disengage from the first engaging structure. Then, when the second engaging structure rotates to the next corresponding engaging position with the first engaging structure, the second engaging structure will move towards the first engaging structure to reset, so that the second engaging structure engages with the first engaging structure. Therefore, each rotation of the adjusting cap by a certain angle will give the operator a jerky damping feeling, which can serve as a measure of the adjustment of the adjusting cap rotation to a certain extent. It can achieve precise gear adjustment, allowing the adjusting cap to drive the adjusting rod to effectively stop at the target position, and has the characteristics of fast adjustment efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the glue gun structure of this utility model.

[0017] Figure 2 It is along Figure 1 A cross-sectional view along the AA direction.

[0018] Figure 3 It is along Figure 1 Cross-sectional view along the BB direction.

[0019] Figure 4 yes Figure 1 A three-dimensional sectional view of a portion of the glue gun structure shown.

[0020] Figure 5 yes Figure 1 The diagram shows a three-dimensional structure of the adjustment base for the glue gun.

[0021] Figure 6 yes Figure 1 The diagram shows the three-dimensional structure of the glue gun structure after the gasket is inverted.

[0022] Figure 7 This is a three-dimensional structural diagram of another embodiment of the glue gun structure of this utility model.

[0023] Figure 8 yes Figure 7 An exploded view of the glue gun structure is shown.

[0024] Figure 9 yes Figure 8 Enlarged view of point D in the middle.

[0025] Figure 10 It is along Figure 7 A cross-sectional view along the CC direction. Detailed Implementation

[0026] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0027] Please see Figures 1 to 10 The glue gun structure 100 of this utility model includes a gun base module 1, an ejector pin assembly 2, a first elastic element 3, an adjusting rod 4, a coil assembly 5, an adjusting cap 6, a gasket 7, and a second engaging structure. The gun base module 1 has a receiving cavity 11 and a glue outlet 12 communicating with the receiving cavity 11. Several first engaging structures are provided on the outer side of the gun base module 1 along a circumferential direction. The ejector pin assembly 2 is movably disposed within the receiving cavity 11 and is used to seal the glue outlet 12. The first elastic element 3 is disposed within the receiving cavity 11 and abuts against the ejector pin assembly 2 and the gun base module 1. The first elastic element 3 provides elastic force so that the ejector pin assembly 2 has a tendency to move and seal the glue outlet 12. The adjusting rod 4... One end is rotatably and movablely inserted into the receiving cavity 11, and the adjusting rod 4 is located on one side of the ejector pin assembly 2; the coil assembly 5 is disposed in the receiving cavity 11 and sleeved on the ejector pin assembly 2. When the coil assembly 5 is energized, it attracts the ejector pin assembly 2, causing the ejector pin assembly 2 to overcome the elastic force of the first elastic element 3 and move away from the glue outlet 12 and abut against the adjusting rod 4; the adjusting cap 6 is fixedly connected to the other end of the adjusting rod 4, and the adjusting cap 6 is provided with an installation cavity 61; the second engaging structure is movably disposed in the installation cavity 61. By rotating the adjusting cap and driving the second engaging structure, the connection state between the second engaging structure and the first engaging structure is continuously switched between engaging and disengaging.

[0028] In this process, energizing the coil assembly 5 attracts the ejector pin assembly 2, causing it to overcome the elastic force of the first elastic element 3 and move away from the dispensing port 12, abutting against the adjusting rod 4. The adjusting rod 4 controls the retraction stroke of the ejector pin assembly 2. When the adjusting rod 4 is rotated by rotating the adjusting cap 6, it drives the second engaging structure to rotate. Under the initial engagement of the second engaging structure with the first engaging structure of the gun base module 1, the second engaging structure first moves away from the first engaging structure within the mounting cavity 61 of the adjusting cap 6 and disengages from it. Then, when the second engaging structure rotates to the next corresponding engagement position with the first engaging structure, it moves towards the first engaging structure to reset, thus engaging with it. Therefore, each rotation of the adjusting cap 6 provides the operator with a jarring, damped feeling, which can serve as a measure of the adjustment of the adjusting cap 6, enabling precise gear adjustment.

[0029] Furthermore, the glue gun structure 100 of this utility model also includes a second elastic member 8. The second elastic member 8 is disposed in the accommodating cavity 11 and abuts against the adjusting cap 6 and the second engaging structure. The second elastic member 8 is used to provide elastic force so that the second engaging structure has a tendency to move and engage with the first engaging structure.

[0030] In one embodiment, such as Figures 1 to 6 As shown, the first engaging structure is the first tooth 133, and the second engaging structure is the shim 7. The shim 7 is sleeved on the adjusting rod 4 and can rotate with the adjusting rod 4. The outer side of the shim 7 is provided with a number of second teeth 71 along the rotation direction of the adjusting rod 4. The elastic force provided by the second elastic member 8 is used to make the second teeth 71 have a tendency to engage with the first tooth 133.

[0031] When the adjusting cap 6 is rotated to drive the adjusting rod 4 to rotate, the adjusting rod 4 will drive the shim 7 to rotate. Under the action of the second tooth 71 of the shim 7 and the first tooth 133 of the gun base module 1, the shim 7 will first move away from the first tooth 133 in the mounting cavity 61 of the adjusting cap 6 and squeeze the second elastic member 8. Then, when the second tooth 71 of the shim 7 rotates to the position corresponding to the next first tooth 133, the shim 7 will move towards the first tooth 133 under the elastic force of the second elastic member 8, so that the second engagement engages with the first tooth 133. Therefore, every time the adjusting cap 6 is rotated by an angle, it will give the operator a jerky damping feeling, which can be used as a measure of the rotation adjustment of the adjusting cap 6 to a certain extent, and can achieve precise gear adjustment.

[0032] In one embodiment, such as Figures 7 to 10As shown, the first engaging structure is the groove 134, the second engaging structure is the ball plunger 72, and the elastic force provided by the second elastic element 8 is used to make the ball plunger 72 tend to engage with the groove 134.

[0033] When the adjusting cap 6 is rotated to drive the adjusting rod 4 to rotate, the adjusting rod 4 will drive the ball plunger 72 to rotate. At the same time, the ball plunger 72 will first move away from the groove 134 in the mounting cavity 61 of the adjusting cap 6 and squeeze the second elastic element 8. Then, when the ball plunger 72 rotates to the position corresponding to the next groove 134, the ball plunger 72 will move towards the groove 134 under the elastic force of the second elastic element 8, so that the ball plunger 72 engages with the groove 134. Therefore, every time the adjusting cap 6 is rotated by an angle, it will give the operator a jerky damping feeling, which can be used as a measure of the rotation adjustment of the adjusting cap 6 to a certain extent, and can achieve precise gear adjustment.

[0034] Please see Figures 1 to 3 In one embodiment, the gun base module 1 includes an adjustment base 13, a gun body 14, a slide valve 15, and a nozzle 16 connected in sequence. The cavities of the adjustment base 13, the gun body 14, the slide valve 15, and the nozzle 16 are connected to form a receiving cavity 11. An adhesive outlet 12 is formed on the nozzle 16. The other end of the adjustment rod 4 and the adjustment cap 6 are located on one side of the adjustment base 13. The first tooth 133 is disposed on the outside of the adjustment base 13.

[0035] Please see Figure 3 and Figure 4 In one embodiment, the glue gun structure 100 of this utility model further includes a limiting pin 9. The adjusting seat 13 is provided with a limiting hole 131 communicating with its internal cavity. The limiting pin 9 passes through the limiting hole 131 and extends into the cavity of the adjusting seat 13. The limiting pin 9 is used to limit the movement of the adjusting rod 4 away from the ejector assembly 2. On the one hand, by setting the limiting pin 9, the movement of the adjusting rod 4 away from the ejector assembly 2 is limited, thereby preventing the adjusting rod 4 from being twisted out too much when the adjusting cap 6 drives the adjusting rod 4 to rotate for adjustment, thereby preventing the adjusting rod 4 from being twisted out of the cavity of the adjusting seat 13. On the other hand, by limiting the movement of the adjusting rod 4 by the limiting pin 9, it is ensured that the second tooth 71 of the gasket 7 can maintain effective engagement with the first tooth 133 on the adjusting seat 13.

[0036] Please see Figure 2 In one embodiment, a sealing ring 41 is provided between the adjusting rod 4 and the inner wall of the cavity of the adjusting seat 13.

[0037] Please see Figure 3 and Figure 4In one embodiment, the adjusting seat 13 is provided with a threaded hole 132 communicating with the limiting hole 131, and a set bolt 132a is provided in the threaded hole 132. Furthermore, one end of the limiting hole 131 passes through the adjusting seat 13, and the other end of the limiting hole 131 communicates with the threaded hole 132 to prevent the limiting pin 9 from being unable to be removed after getting wet when replacing the sealing ring 41 at the position of the adjusting rod 4.

[0038] Please see Figure 2 In one embodiment, one end of the ejector pin assembly 2 is provided with a steel ball 21 for sealing the glue outlet 12. By repeatedly energizing the coil assembly 5, the ejector pin reciprocates within the receiving cavity 11, thereby driving the steel ball 21 to open or seal the glue outlet 12.

[0039] Please see Figure 2 In one embodiment, the coil assembly 5 includes a coil frame 51 and a coil body 52. ​​The coil body 52 is sleeved on the ejector pin assembly 2 and wound around the coil frame 51. The coil frame 51 is disposed within the cavity of the gun body 14. Specifically, the coil assembly 5 also includes a coil pressing block 53, which is disposed on the end of the coil frame 51.

[0040] Please see Figure 1 In one embodiment, the gun base module 1 is provided with a warning light 17, which illuminates once during each reciprocating motion of the ejector pin assembly 2. The warning light 17 is mounted on an adjustment base 13. More specifically, the adjustment base 13 may be equipped with a retaining plate, the warning light 17 may be arranged on the retaining plate, and a start / stop button may also be provided on the retaining plate.

[0041] Combination Figures 1 to 6 The specific working principle of the glue gun structure 100 of this utility model is as follows:

[0042] When adhesive application is required, the adhesive enters the adjusting rod 4 and the receiving cavity 11 from the adhesive flow channel. The coil assembly 5 is energized, attracting the ejector pin assembly 2. This causes the ejector pin assembly 2 to overcome the elastic force of the first elastic element 3 and move away from the adhesive outlet 12, thereby driving the steel ball 21 to open the adhesive outlet 12, allowing the adhesive to flow out. The adjusting rod 4 controls the retraction amount of the ejector pin assembly 2, thus controlling the amount of adhesive dispensed. When adhesive application is not required, the coil assembly 5 is de-energized, and the ejector pin assembly 2 moves back to its original position under the elastic force of the first elastic element 3, thereby driving the steel ball 21 to close the adhesive outlet 12.

[0043] The glue gun structure 100 of this utility model has a first engaging structure on the gun base module 1 and a second engaging structure in the mounting cavity 61 of the adjusting cap 6. When the adjusting cap 6 is rotated to drive the adjusting rod 4 to rotate, the adjusting rod 4 will drive the second engaging structure to rotate. Under the initial engaging action of the second engaging structure and the first engaging structure of the gun base module 1, the second engaging structure will first move away from the first engaging structure in the mounting cavity 61 of the adjusting cap 6 and disengage from the first engaging structure. Then, when the second engaging structure rotates to the next corresponding engaging position with the first engaging structure, the second engaging structure will move towards the first engaging structure, so that the second engagement engages with the first engaging structure. Therefore, every time the adjusting cap 6 is rotated by one tooth angle, it will bring a jerky damping feeling to the operator, which can be used as a measure of the rotation adjustment of the adjusting cap 6 to a certain extent. It can achieve precise gear adjustment, so that the adjusting cap 6 can drive the adjusting rod 4 to effectively stop at the target position, and has the characteristics of fast adjustment efficiency.

[0044] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A glue gun structure, characterized by, include: A gun base module, wherein the gun base module has a receiving cavity and an adhesive outlet communicating with the receiving cavity, and the outer side of the gun base module has a plurality of first engaging structures along a circumferential direction. A ejector pin assembly, which is movably disposed within the receiving cavity and used to seal the dispensing port; A first elastic element is disposed within the accommodating cavity and abuts against the ejector pin assembly and the gun base module. The first elastic element is used to provide elastic force so that the ejector pin assembly has a tendency to move and block the dispensing port. An adjusting rod, one end of which is rotatably and movablely inserted into the receiving cavity; A coil assembly is disposed within the accommodating cavity and sleeved on the ejector pin assembly. When the coil assembly is energized, it attracts the ejector pin assembly, causing the ejector pin assembly to overcome the elastic force of the first elastic element and move away from the dispensing port and abut against the adjusting rod. An adjusting cap is fixedly connected to the other end of the adjusting rod, and the adjusting cap has a mounting cavity inside; The second engaging structure is movably disposed within the mounting cavity. By rotating the adjusting cap and driving the second engaging structure, the connection state between the second engaging structure and the first engaging structure is continuously switched between engaging and disengaging.

2. The glue gun structure according to claim 1, characterized in that, It also includes a second elastic element, which is disposed within the accommodating cavity and abuts against the adjusting cap and the second engaging structure. The second elastic element is used to provide elastic force so that the second engaging structure tends to move and engage with the first engaging structure.

3. The glue gun structure of claim 2, wherein, The first engaging structure is a first tooth, and the second engaging structure is a washer. The washer is sleeved on the adjusting rod and can rotate with the adjusting rod. The outer surface of the washer is provided with a plurality of second teeth along the rotation direction of the adjusting rod. The elastic force provided by the second elastic element is used to make the second teeth tend to engage with the first teeth.

4. The glue gun structure of claim 2, wherein, The first engaging structure is a groove, the second engaging structure is a ball-head plunger, and the elastic force provided by the second elastic element is used to make the ball-head plunger tend to engage with the groove.

5. The glue gun structure of claim 1, wherein, The gun base module includes an adjustment base, a gun body, a slide valve, and a nozzle connected in sequence. The cavities of the adjustment base, the gun body, the slide valve, and the nozzle are connected to form the receiving cavity. The glue outlet is formed on the nozzle. The other end of the adjustment rod and the adjustment cap are located on one side of the adjustment base. The first engaging structure is disposed on the outside of the adjustment base.

6. The glue gun structure of claim 5, wherein, It also includes a limiting pin. The adjusting seat has a limiting hole communicating with its internal cavity. The limiting pin passes through the limiting hole and extends into the cavity of the adjusting seat. The limiting pin is used to limit the movement of the adjusting rod away from the ejector pin assembly.

7. The glue gun structure according to claim 6, characterized in that, The adjusting seat is provided with a threaded hole that communicates with the limiting hole, and a set bolt is provided in the threaded hole.

8. The glue gun structure of claim 7, wherein, One end of the limiting hole passes through the adjusting seat, and the other end of the limiting hole communicates with the threaded hole.

9. The glue gun structure according to claim 5, characterized in that, A sealing ring is provided between the adjusting rod and the inner wall of the cavity of the adjusting seat.

10. The glue gun structure according to claim 1, characterized in that, The coil assembly includes a coil frame and a coil body. The coil body is sleeved on the pin assembly and wound around the coil frame.

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