Glue gun

Abstract

The utility model relates to a gluing gun which comprises a machine shell, a motor installed on the machine shell, a transmission mechanism and a propelling mechanism connected with the motor, and a bracket fixed to the front end of the machine shell. The bracket is configured to contain the rubber tube and the propelling mechanism, and the motor drives the propelling mechanism to move in the preset direction through the transmission mechanism. The bracket is provided with a first positioning piece and a second positioning piece which are arranged at an interval along a preset direction, and a connecting piece connected between the first positioning piece and the second positioning piece; the extending direction of the connecting piece is parallel to the preset direction. The first positioning piece has a first positioning feature, one end of the connecting piece has a second positioning feature, and the first positioning feature and the second positioning feature are matched in shape. On a projection plane perpendicular to the preset direction, the first positioning piece and the connecting piece are at least partially overlapped, and a welding material is filled between the first positioning piece and the connecting piece. According to the gluing gun provided by the invention, the connection strength between different parts of the bracket can be ensured, so that the overall mechanical strength of the bracket is ensured.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of glue injection tools, in particular to a glue injection gun. BACKGROUND

[0002] With the continuous development of tool manufacturing technology, more and more operation tools begin to appear for operation personnel to choose to use. The glue injection gun is a tool that can be used to perform glue injection operation. The glue injection gun can extrude the glue contained in the sleeve during the operation, thereby facilitating the glue injection operation.

[0003] The glue injection gun includes a bracket for placing a sleeve storing glue. When the glue injection operation is needed, the sleeve storing glue can be installed on the bracket. Thus, the glue injection is realized by using the structure of the glue injection gun. The bracket in the prior art is formed by welding a plurality of hardware pieces. The two hardware pieces are aligned, and are welded together by heating and melting with an electric welding gun or by welding with an electric welding gun and welding wire. Although the welding form can fix the different hardware pieces in the bracket together, the welding section is only a fusion surface, and the virtual welding phenomenon is easily formed. When the glue injection gun is used, the bracket welding surface is easily cracked by applying a certain force. Therefore, how to ensure the connection strength between the different components of the bracket to ensure the mechanical strength of the whole bracket is an important problem. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a glue injection gun which can facilitate to ensure the connection strength between the different components of the bracket to ensure the mechanical strength of the whole bracket.

[0005] To solve the above technical problems, the embodiment of the present application provides a glue injection gun. The glue injection gun includes a machine shell, a motor installed on the machine shell, a transmission mechanism and a pushing mechanism connected to the motor, and a bracket fixed to the front end of the machine shell. The bracket is configured to accommodate a glue pipe and the pushing mechanism, and the motor drives the pushing mechanism to move in a preset direction through the transmission mechanism. The bracket has a first positioning member and a second positioning member arranged at intervals along the preset direction, and a connecting member connected between the first positioning member and the second positioning member. The extension direction of the connecting member is parallel to the preset direction. The first positioning member has a first positioning feature, one end of the connecting member has a second positioning feature, and the first positioning feature and the second positioning feature are shape-fitted. In the projection plane perpendicular to the preset direction, the first positioning member and the connecting member at least partially overlap, and the first positioning member and the connecting member are filled with welding material.

[0006] The gluing gun provided by the embodiments of the present application is provided with a positioning feature in a shape matching the abutting position of different parts of the bracket, i.e., the welding position. Different positioning features can be arranged at the edge positions of the connecting piece and the positioning piece, so that when the connecting piece and the positioning piece are welded together, the different positioning features cooperate with each other to form an overlapping part of the connecting piece and the positioning piece, thereby increasing the cooperation area between the connecting piece and the positioning piece. At the same time, the welding material can enter the overlapping area to improve the welding strength. Thus, the connection strength between different parts of the bracket is ensured, and the overall mechanical strength of the bracket is ensured.

[0007] In some embodiments, the first positioning piece is provided with a plurality of first protrusions, and the connecting piece is provided with a plurality of first grooves corresponding to the plurality of first protrusions. Each first protrusion is inserted into a corresponding first groove, and a gap is formed between the first protrusion and the surface of the connecting piece. The gap is filled with welding material. In this way, the cooperation area of the connecting piece and the positioning piece can be effectively increased by the cooperation between the plurality of protrusions and the plurality of grooves, and the filling of the welding material is facilitated.

[0008] In some embodiments, the second positioning piece is provided with a plurality of second protrusions, and the connecting piece is provided with a plurality of second grooves corresponding to the plurality of second protrusions. Each second protrusion is inserted into a corresponding second groove, and a gap is formed between the second protrusion and the surface of the connecting piece. The gap is filled with welding material. In this way, the cooperation area of the connecting piece and the other positioning piece can be effectively increased by the cooperation between the plurality of protrusions and the plurality of grooves, and the filling of the welding material is facilitated.

[0009] In some embodiments, the first groove includes two first side walls arranged oppositely, and the distance between the first protrusion and the first side wall of the corresponding first groove is 0.1-3.5 mm. The second groove includes two second side walls arranged oppositely, and the distance between the second protrusion and the second side wall of the corresponding second groove is 0.1-3.5 mm. In this way, a gap can be reserved between the protrusion and the side wall of the groove to facilitate the filling of the welding material.

[0010] In some embodiments, the first protrusion extends from the side wall of the first positioning piece, and the extension direction of the first protrusion is perpendicular to the preset direction. In this way, the protrusion can be extended in a direction perpendicular to the preset direction to avoid protruding from the two side surfaces of the positioning piece.

[0011] In some embodiments, the side walls of the first positioning piece and the second positioning piece are arranged in an arc shape. In this way, the welding section of the positioning piece can be arranged in an arc shape to increase the compression strength of the connecting part in different directions.

[0012] In some embodiments, the side wall of the first positioning member is provided with a first matching surface and a first positioning surface connected to the first matching surface, and the first positioning feature is protruding on the first matching surface, and the first positioning surface is facing the connecting member and perpendicular to the first matching surface. In this way, the position of the connecting member can be limited by the positioning surface.

[0013] In some embodiments, the maximum distance between the edge of the first positioning surface and the first matching surface is greater than the maximum distance between the edge of the first protrusion and the first matching surface. In this way, the protruding height of the edge of the positioning surface on the matching surface of the positioning member is controlled to be greater than the protruding height of the protrusion, so as to effectively limit the matching position at the cross section and the filling position of the welding material.

[0014] In some embodiments, the first positioning surface is flush with the surface of the connecting member away from the first matching surface. In this way, the flatness of the joint when the connecting member is matched with the positioning member can be ensured by making the edge of the positioning surface coincide with the surface of the connecting member.

[0015] In some embodiments, the connecting member is multiple, and the multiple connecting members are symmetrically arranged about a preset direction. In this way, the installation and fixation of multiple sleeves can be adapted by arranging multiple connecting members. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, these example are not intended to limit the embodiments, elements having the same reference numbers in the figures indicate like elements, unless otherwise expressly stated, the figures in the drawings do not constitute a proportional limitation.

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of the glue gun provided by some embodiments of the present application;

[0018] Figure 2 is a schematic diagram of the exploded structure of the glue gun provided by some embodiments of the present application;

[0019] Figure 3 is a schematic diagram of the three-dimensional structure of the bracket in the glue gun provided by some embodiments of the present application;

[0020] Figure 4 is a schematic diagram of the three-dimensional structure of the bracket in the glue gun provided by some embodiments of the present application;

[0021] Figure 5 is a schematic diagram of the arrangement structure of the first positioning member and the second positioning member of the bracket in the glue gun provided by some embodiments of the present application;

[0022] Figure 6 is a schematic diagram of the arrangement structure of the connecting member of the bracket in the glue gun provided by some embodiments of the present application. DETAILED DESCRIPTION

[0023] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, it should be understood by those skilled in the art that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even without these technical details and based on various changes and modifications of the following embodiments. The division of the following embodiments is for the convenience of description, and should not constitute any limitation on the specific embodiments of the present application. The embodiments can be combined and referenced to each other without contradiction.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the present specification and claims and the aforementioned description of the drawings, the terms "comprising" and "having" and any variations thereof, are intended to cover not exclusively inclusive.

[0025] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0026] Please refer to Figure 1 and Figure 2 The electric glue gun of the preferred embodiment of the utility model relates to an electric glue gun, especially a two-component electric glue gun. The electric glue gun 10 comprises a casing 11, a motor accommodated in the casing 11, a transmission mechanism driven by the motor and a propelling mechanism connected to the transmission mechanism, the motor drives the propelling mechanism to operate through the transmission mechanism. The casing 11 comprises a holding portion, and the motor is accommodated in the holding portion. The holding portion is provided with a handle located at the middle portion and a trigger connected to the handle, and an operator can control the start and stop of the operation of the electric glue gun by pressing the trigger. The casing 11 further comprises a circuit board arranged at the bottom of the casing 11, the circuit board is electrically connected to the control device, and the casing 11 is further connected to a battery pack 101, the battery pack 101 can supply power to the electric glue gun.

[0027] In combination with Figure 2As shown, the glue gun 10 also has a bracket 12 located at the front end of the housing 11. The bracket 12 is used to receive the glue tube 102 and forms a receiving portion at the front end of the housing 11. The receiving portion is used to place the glue tube 102 and the propulsion mechanism. Two push rods 111 are disposed in the propulsion mechanism and move along a preset direction ( Figure 2 The two push rods 111 extend into the bracket 12 in the direction indicated by the middle arrow S and are parallel to each other. The push rods 111 are at least partially housed in the receiving part, that is, the two push rods 111 of the pushing mechanism extend into the bracket 12. The front end of the push rod 111 can push the glue in the glue tube 102 placed in the receiving part, thereby smoothly extruding the glue.

[0028] like Figures 3 to 6 As shown, the bracket 12 has a first positioning member 121 and a second positioning member 122 spaced apart along a preset direction, and a connector 123 connected between the first positioning member 121 and the second positioning member 122. The extension direction of the connector 123 is parallel to the preset direction. The first positioning member 121 is connected to the housing 11, and the push rod 111 passes through the through hole of the first positioning member 121.

[0029] The first positioning member 121 has a first positioning feature, and one end of the connecting member 123 has a second positioning feature. The first and second positioning features are shaped to fit each other. Simultaneously, on a projection plane perpendicular to a preset direction, the first positioning member 121 and the connecting member 123 at least partially overlap. There can be multiple connecting members 123, symmetrically arranged about the preset direction. Multiple connecting members 123 can be positioned to correspond to different push rod 111 positions, thus providing support and limiting functions when installing different hoses 102. The sidewalls of the first positioning member 121 and the second positioning member 122 can be arc-shaped. Compared to straight sidewalls, arc-shaped sidewalls of the positioning members are beneficial for bearing forces from different directions, thereby ensuring the structural strength of the mating positions of the positioning members and the connecting member 123 under forces from different directions.

[0030] In the embodiment, the first positioning member 121 and the second positioning member 122 are arranged along a preset direction and spaced apart to form a space region for accommodating the rubber tube 102. The first positioning member 121 and the second positioning member 122 are connected by the connecting member 123 to form an integral whole. Different ends of the connecting member 123 are respectively mounted and welded with the first positioning member 121 and the second positioning member 122. One end of the connecting member 123 is mounted and welded with the first positioning member 121, and the other end of the connecting member 123 is mounted and welded with the second positioning member 122. One of the connecting member 123 and the first positioning member 121 is provided with the first protrusion 13 at the mounting position, and the other is provided with the first groove 14 corresponding to the first protrusion 13, and the first protrusion 13 is accommodated in the first groove 14. One of the connecting member 123 and the second positioning member 122 is provided with the second protrusion 15 at the abutting position, and the other is provided with the second groove 16 corresponding to the second protrusion 15, and the second protrusion 15 is accommodated in the second groove 16. That is, at the abutting position of the connecting member 123 and the positioning member, the cross-shaped tooth-shaped matching structure is arranged. By arranging different positioning features on the side walls of the connecting member 123 and the positioning member respectively, when the connecting member 123 and the positioning member are welded and matched, the different positioning features are matched with each other, the connecting member 123 and the positioning member form an overlapping part, and the matching area between the connecting member 123 and the positioning member is increased. At the same time, the first positioning member 121, the second positioning member 122 and the connecting member 123 are filled with welding material. The welding material can enter the overlapping area to improve the welding strength. Thus, the connection strength between different components in the bracket 12 is ensured, and the overall mechanical strength of the bracket 12 is ensured. Preferably, the welding material is a welding rod, a welding wire, a metal powder, a welding agent, etc.

[0031] As shown in Figure 5 and Figure 6 , a plurality of first protrusions 13 can be arranged on the first positioning member 121, a plurality of first grooves 14 corresponding to the plurality of first protrusions 13 are arranged on the connecting member 123, and the first protrusions 13 are accommodated in the corresponding first grooves 14. At the same time, the second positioning member 122 is provided with a plurality of second protrusions 15, the connecting member 123 is provided with a plurality of second grooves 16 corresponding to the plurality of second protrusions 15, and each second protrusion 15 is accommodated in the corresponding second groove 16. By arranging a plurality of protrusions on different positioning members, a clamping structure can be formed at a plurality of positions matched with the connecting member 123, thereby effectively improving the connection strength between components in the bracket 12.

[0032] In addition, the width of at least part of the first protrusions 13 and the width of at least part of the second protrusions 15 can be different to adapt to the force of the connecting member 123 and the positioning member at different welding positions. In actual cases, a gap can be formed between the first protrusions 13 and the surface of the connecting member 123, and welding material can be filled in the gap. A gap can also be formed between the second protrusions 15 and the surface of the connecting member 123, and welding material can be filled in the gap. That is, the distance between the two surfaces of the protrusions with larger areas can be set to be smaller than the thickness of the connecting member 123. In this way, when the connecting member 123 is matched with different positioning members, the protrusions can not only be accommodated in the corresponding grooves, but also can reserve space for welding material to be filled in the grooves. Thus, the welding effect at the engagement position can be ensured.

[0033] In the embodiment, the first groove 14 includes two first side walls 141 arranged oppositely, and the distance between the first protrusions 13 and the first side walls 141 of the corresponding first grooves 14 can be 0.1 mm to 3.5 mm. The second groove 16 includes two second side walls 161 arranged oppositely, and the distance between the second protrusions 15 and the second side walls 161 of the corresponding second grooves 16 can be 0.1 mm to 3.5 mm. That is, a space with a width of 0.1 mm to 3.5 mm, for example, 0.1 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm or 3.5 mm, is left at the intersection position of the protrusions and the grooves, and welding material can be filled by welding wire during welding to fuse the matching positions of different components together.

[0034] In addition, the first protrusions 13 extend from the side wall of the first positioning member 121, and the extension direction of the first protrusions 13 is perpendicular to the preset direction. The second protrusions 15 extend from the side wall of the second positioning member 122, and the extension direction of the second protrusions 15 is perpendicular to the preset direction. That is, the protrusions extend along the perpendicular direction of the preset direction, so that the protrusions do not protrude from the two sides of the positioning member and interference with other components is avoided. The plurality of first protrusions 13 and the plurality of second protrusions 15 are arranged in a relatively uniform form. The cross section at the side wall of the positioning member can be divided into positions, and different protrusions are formed at appropriate positions on the welding cross section of the positioning member. In this way, the positioning member and the connecting member 123 can bear relatively uniform force at each position of the welding cross section, and the force at each matching position can be dispersed.

[0035] As Figure 5As shown, the edge of the first positioning member 121 can be provided with a first matching surface 1211 and a first positioning surface 1212 connected to the first matching surface 1211, the first protrusion 13 is protruded on the first matching surface 1211, and the first positioning surface 1212 is perpendicular to the first matching surface 1211 and faces the connecting member 123. The edge of the second positioning member 122 can be provided with a second matching surface 1221 and a second positioning surface 1222 connected to the second matching surface 1221, the second protrusion 15 is protruded on the second matching surface 1221, and the second positioning surface 1222 is perpendicular to the second matching surface 1221 and faces the connecting member 123. That is, the matching area is formed at the edge of the different positioning members, and the matching area is limited by the positioning surface connected to the matching surface. When the end of the connecting member 123 abuts against the matching surface of the positioning member, the positioning surface faces the connecting member 123 to limit the matching position of the connecting member 123. Thus, the welding section is formed by the matching surface, and the edge of the connecting member 123 is positioned by the positioning surface. In order to assemble and match the different components in the bracket 12.

[0036] In the embodiment, the maximum distance between the edge of the first positioning surface 1212 and the first matching surface 1211 is greater than the maximum distance between the edge of the first protrusion 13 and the first matching surface 1211, and the maximum distance between the edge of the second positioning surface 1222 and the second matching surface 1221 is greater than the maximum distance between the edge of the second protrusion 15 and the second matching surface 1221. The maximum distance between the edge of the positioning surface and the matching surface is the protruding height of the positioning surface relative to the matching surface, and the maximum distance between the edge of the protrusion and the matching surface is the protruding height of the protrusion relative to the matching surface. The maximum distance between the positioning surface and the matching surface is greater than the maximum distance between the edge of the protrusion and the matching surface, that is, the protruding height of the positioning surface relative to the matching surface is greater than the protruding height of the protrusion relative to the matching surface. By making the protruding height of the first positioning surface 1212 relative to the first matching surface 1211 greater than the protruding height of the first protrusion 13 relative to the first matching surface 1211, the matching position at the section and the filling position of the welding material can be limited.

[0037] In actual cases, the first positioning surface 1212 can be in abutment with the positioning surface on the connecting member 123 parallel to the preset direction, and the second positioning surface 1222 can be in abutment with the positioning surface on the connecting member 123 parallel to the preset direction. In this way, the position of the connecting member 123 and the different positioning members can be accurately defined. In addition, the edge of the first positioning surface 1212 away from the first fitting surface 1211 can be flush with the surface of the connecting member 123 away from the first fitting surface 1211, and the edge of the second positioning surface 1222 away from the second fitting surface 1221 can be flush with the surface of the connecting member 123 away from the second fitting surface 1221. The edge of the positioning surface away from the fitting surface is flush with the surface of the connecting member 123 away from the fitting surface, that is, the edge of the positioning surface away from the fitting surface coincides with the edge of the surface of the connecting member 123 away from the fitting surface. The surface of the connecting member 123 can be made consistent with the edge of the positioning member that is not in cooperation with the connecting member 123, so as to avoid forming a joint with different heights and affecting the smoothness of the surface of the bracket 12.

[0038] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present application, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A glue gun, comprising a housing, a motor mounted on the housing, a transmission mechanism and a propulsion mechanism connected to the motor, and a bracket fixed to the front end of the housing, the bracket being configured to receive a glue tube and the propulsion mechanism, the motor driving the propulsion mechanism to move in a preset direction via the transmission mechanism; characterized in that: The bracket has a first positioning member connected to the housing, a second positioning member spaced apart from the first positioning member along the preset direction, and a connector connecting the first positioning member and the second positioning member. The extension direction of the connector is parallel to the preset direction. The first positioning member has a first positioning feature, and one end of the connector has a second positioning feature. The first positioning feature and the second positioning feature are shape-fitted. On a projection plane perpendicular to the preset direction, the first positioning member and the connector at least partially overlap, and welding material is filled between the first positioning member and the connector.

2. The glue gun according to claim 1, characterized in that: The first positioning member is provided with a plurality of first protrusions, and the connecting member is provided with a plurality of first grooves corresponding one-to-one with the plurality of first protrusions. Each first protrusion is received in the corresponding first groove, and there is a gap between each first protrusion and the surface of the connecting member, and the welding material fills the gap.

3. The glue gun according to claim 2, characterized in that: The second positioning member is provided with a plurality of second protrusions, and the connector is provided with a plurality of second grooves corresponding one-to-one with the plurality of second protrusions. Each second protrusion is received in the corresponding second groove, and there is a gap between each second protrusion and the surface of the connector, and the welding material fills the gap.

4. The glue gun according to claim 3, characterized in that, include: The first groove includes two opposing first sidewalls, and the distance between the first protrusion and the corresponding first sidewall is 0.1 mm to 3.5 mm; The second groove includes two opposing second sidewalls, and the distance between the second protrusion and the corresponding second sidewall is 0.1 mm to 3.5 mm.

5. The glue gun according to claim 3, characterized in that: The first protrusion extends from the side wall of the first positioning member, and the extension direction of the first protrusion is perpendicular to the preset direction.

6. The glue gun according to claim 1, characterized in that: The sidewalls of the first positioning member and the second positioning member are arc-shaped.

7. The glue gun according to claim 4, characterized in that: The first positioning member has a first mating surface on its side wall and a first positioning surface that is in contact with the first mating surface. The first positioning feature protrudes from the first mating surface and the first positioning surface faces the connector and is perpendicular to the first mating surface.

8. The glue gun according to claim 7, characterized in that: The maximum distance between the edge of the first positioning surface and the first mating surface is greater than the maximum distance between the edge of the first positioning feature and the first mating surface.

9. The glue gun according to claim 8, characterized in that: The edge of the first positioning surface away from the first mating surface is flush with the surface of the connector away from the first mating surface.

10. The glue gun according to claim 1, characterized in that: There are multiple connectors, and the multiple connectors are symmetrically arranged about the preset direction.

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