Handheld spot welding machine

Abstract

The utility model relates to the field of spot welding machine technical equipment, in particular to a handheld spot welding machine. The utility model provides a handheld spot welding machine which comprises a holding assembly, the holding assembly comprises a shell, and the shell comprises an upper shell and a lower shell covering the upper shell; the circuit assembly is installed in the shell and comprises a circuit board and elements electrically connected to the circuit board; the welding head assembly is installed in the shell and comprises a pair of welding pins partially exposed out of the shell and a metal installation base used for installing the welding pins on the circuit board, the welding pins are arranged in a spaced mode, the metal installation base is a cylinder, and a plane part connected with the circuit board is formed on the circumferential side face of the metal installation base. A first mounting hole for accommodating the welding pin is formed in the axial direction of the metal mounting seat, and the welding pin can be partially or completely separated from the first mounting hole. The utility model provides a handheld spot welding machine which aims at solving at least one of the technical problems that a welding needle is tedious and time-consuming to replace, alignment is difficult and machining cost is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to spot welding machine technical equipment field especially, relate to a handheld spot welding machine. BACKGROUND

[0002] Spot welding is a common metal piece welding process, and traditional spot welding is carried out by artificial holding welding gun and welding rod, and the efficiency is very low. With the development of science and technology, the emergence of spot welding machine improves the efficiency of spot welding to a certain extent. When spot welding, the spot welding machine uses the high-temperature arc generated by the positive and negative poles in the moment of short circuit to melt the welding material on the welding rod and the welded material to achieve the purpose of combining them.

[0003] The welding head of the spot welding machine usually includes a pair of opposed welding pins (i.e. electrodes). When current passes through the welding pins, the electrical resistance provided by the components tends to heat the components locally around the contact points of the welding pins or at the mating surfaces of the components, thereby locally melting the metal components together to form a spot weld. The conventional welding head is arranged to support various different configurations of welding pins, and different welding pin configurations can be selected according to the desired spot welding size and the structure of the metal components to be welded.

[0004] However, the welding head of the existing handheld spot welding machine is directly welded on the circuit board, and once the welding pin is damaged, the spot welding machine needs to be directly disassembled and the welding pin welded on the circuit board needs to be disassembled. The whole process of removing and replacing the welding pin is very cumbersome and time-consuming, which is extremely inconvenient for the user. In addition, the welding pin of the handheld spot welding machine also has the problems of difficult accurate alignment during installation and high processing cost.

[0005] Therefore, it is necessary to provide a handheld spot welding machine to solve the above problems. SUMMARY

[0006] In view of the deficiencies of the prior art, the utility model provides a handheld spot welding machine to solve at least one of the technical problems of cumbersome and time-consuming welding pin replacement, difficult alignment and high processing cost.

[0007] In order to achieve the above purpose, the utility model provides a handheld spot welding machine, which comprises:

[0008] The holding assembly comprises a shell, and the shell comprises an upper shell and a lower shell covering the upper shell;

[0009] The circuit assembly installed in the shell comprises a circuit board and an element electrically connected to the circuit board;

[0010] A welding head assembly is installed in the shell, the welding head assembly comprises a pair of welding pins partially exposed outside the shell and a metal mounting base for mounting the welding pins on the circuit board, the welding pins are arranged at a distance from each other, the metal mounting base is a cylinder and has a flat surface connected to the circuit board on the peripheral surface, a first mounting hole for accommodating the welding pins is formed in the axial direction of the metal mounting base, and the welding pins can be partially or completely arranged out of the first mounting hole.

[0011] Preferably, a second mounting hole is formed in the radial direction of the metal mounting base, the second mounting hole extends from the outer wall of the metal mounting base to the first mounting hole and is arranged perpendicularly to the first mounting hole, a fastener for fastening the welding pin is arranged in the second mounting hole, and a third mounting hole for mounting the fastener is formed in the shell.

[0012] Preferably, the second mounting hole is formed in the peripheral surface of the metal mounting base other than the flat surface.

[0013] Preferably, a limiting member for limiting the movement distance of the fastener is fixed to the circuit board, the limiting member is arranged close to the tail of the fastener, and the distance between the outer wall close to the side of the metal mounting base and the center axis of the metal mounting base is less than the sum of the radius of the cross section of the metal mounting base and the length of the fastener.

[0014] Preferably, the welding pins are arranged on the circuit board at an angle with the central axis of the shell as the axis of symmetry.

[0015] Preferably, the first mounting hole is coaxially arranged with the metal mounting base, and the first mounting hole is a blind hole.

[0016] Preferably, a first clamping part is formed on the side of the upper shell, a second clamping part is correspondingly formed on the side of the lower shell, and the first clamping part and the second clamping part can be clamped to each other.

[0017] Preferably, an interface for connecting with external equipment is arranged at the tail of the shell.

[0018] Preferably, a display screen for display is arranged on the shell.

[0019] In the scheme of the present application, a handheld spot welder comprises a holding assembly, a circuit assembly and a welding head assembly. The welding head assembly comprises a metal mounting seat mounted on a circuit board and a welding pin arranged in the metal mounting seat. Specifically, the metal mounting seat is a cylinder and has a flat surface connected with the circuit board on the peripheral surface thereof, and the metal mounting seat is fixed on the circuit board through the flat surface. In addition, the metal mounting seat is provided with a first mounting hole, and the welding pin is partially or completely arranged out of the first mounting hole.

[0020] The present application has the following beneficial effects:

[0021] Firstly, the welding pin can be completely separated from the first mounting hole, and the user can replace the welding pin in time when the welding pin is damaged.

[0022] Secondly, the welding pin can be partially separated from the first mounting hole, which means that the welding pin can be adjusted in the metal mounting seat, so that the welding pin can be accurately aligned during installation or use.

[0023] Thirdly, the metal seat is a cylinder and has a flat surface connected with the circuit board on the peripheral surface thereof, which is simple to process and has low cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0025] Figure 1 The structure diagram of the handheld spot welding of the embodiment of the present application is shown.

[0026] Figure 2 The structure diagram of the handheld spot welding of the embodiment of the present application is shown.

[0027] Figure 3 The structure diagram of the welding head assembly of the embodiment of the present application is shown.

[0028] Figure 4 The structure diagram of the metal mounting seat of the embodiment of the present application is shown.

[0029] Figure 5 The structure diagram of the metal mounting seat of the embodiment of the present application is shown. Figure 4 The sectional view of A-A in the embodiment of the present application is shown.

[0030] The realization, functional characteristics and advantages of the present application will be further described with reference to the drawings.

[0031] Brief Description of Drawings

[0032] 100 - holding assembly, 110 - upper housing, 111 - first snap portion, 120 - lower housing, 121 - second snap portion, 130 - interface, 140 - display screen, 150 - third mounting hole;

[0033] 200 - circuit assembly, 210 - circuit board, 220 - battery;

[0034] 300 - welding tip assembly, 310 - welding needle, 320 - metal mounting base, 321 - flat portion, 322 - first mounting hole, 323 - second mounting hole, 324 - fastener, 325 - limiting member. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the present application.

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0038] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the person skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0039] Please refer to the drawings Figure 1 to the drawings Figure 2In order to achieve the above object, the utility model provides a handheld spot welder, include: hold subassembly 100, hold subassembly 100 include the casing (not marked in the drawing), the casing includes upper casing 110 and the lower casing 120 that covers on upper casing 110. In this embodiment, the side of upper casing 110 forms first buckle part 111, and the side of lower casing 120 corresponds to form second buckle part 121, and first buckle part 111 and second buckle part 121 can be buckled with each other. In addition to the mode of buckling given by this embodiment, upper casing 110 and lower casing 120 can also be connected by screw, adhesive and the like.

[0040] The circuit assembly 200 installed in the casing, the circuit assembly 200 includes circuit board 210, element (not shown in the drawing) electrically connected to circuit board 210. Specifically, in this embodiment, the circuit board 210 is provided with a battery 220 for power supply, and an interface 130 connected with external equipment is arranged at the tail of the casing, and the handheld spot welder can be connected with the external equipment through the interface 130 to exchange energy or data and the like. In addition, as an optional embodiment of this embodiment, a display screen 140 for state display, function selection and the like is further arranged on the casing.

[0041] The welding head assembly 300 installed in the casing, the welding head assembly 300 includes a pair of welding needles 310 partially exposed outside the casing and a metal mounting seat 320 for mounting the welding needle 310 on the circuit board 210, the welding needles 310 are arranged at intervals, and the metal mounting seat 320 is a cylinder and has a flat part 321 connected with the circuit board 210 on the circumferential side surface, specifically, in this embodiment, the metal mounting seat 320 is welded to the circuit board 210 through the flat part 321. The first mounting hole 322 accommodating the welding needle 310 is formed in the axial direction of the metal mounting seat 320, and the welding needle 310 can be partially or completely arranged out of the first mounting hole 322.

[0042] Among them, as a preferred embodiment of this embodiment, the welding needle 310 is inclinedly arranged on the circuit board 210 with the center axis α of the casing as the symmetry axis, and the pair of inclinedly arranged welding needles 310 can adjust the distance between the ends of the welding needles 310 by adjusting the position of the welding needle 310 relative to the metal mounting seat 320 to adapt to the spot welding requirement of different spacing. In addition, the first mounting hole 322 is coaxially arranged with the metal mounting seat 320 to facilitate processing the first mounting hole 322 on the metal mounting seat 320, and the first mounting hole 322 is a blind hole to prevent the welding needle 310 from penetrating through the entire metal mounting seat 320 and falling into the casing.

[0043] In the scheme of the present application, a handheld spot welder comprises a holding assembly 100, a circuit assembly 200 and a welding head assembly 300. The welding head assembly 300 comprises a metal mounting seat 320 mounted on a circuit board 210 and a welding needle 310 arranged in the metal mounting seat 320. Specifically, the metal mounting seat 320 is a cylinder and has a flat part 321 connected with the circuit board 210 on the circumferential surface thereof, and the metal mounting seat 320 is fixed to the circuit board 210 through the flat part 321. In addition, the metal mounting seat 320 is provided with a first mounting hole 322, and the welding needle 310 is arranged partially or completely out of the first mounting hole 322.

[0044] The present application has the following beneficial effects:

[0045] Firstly, the welding needle 310 can be completely separated from the first mounting hole 322, and the user can replace the welding needle 310 in time when the welding needle 310 is damaged.

[0046] Secondly, the welding needle 310 can be partially separated from the first mounting hole 322, which means that the welding needle 310 can be adjusted in the metal mounting seat 320, so that the welding needle 310 can be accurately aligned during installation or use.

[0047] Thirdly, the metal mounting seat is a cylinder and has a flat part 321 connected with the circuit board 210 on the circumferential surface thereof, which is simple to process and has low cost.

[0048] Please refer to the accompanying drawings Figure 3 and the accompanying drawings Figure 4 As a specific embodiment of the present application, the second mounting hole 323 is arranged in the radial direction of the metal mounting seat 320, the second mounting hole 323 extends from the outer wall of the metal mounting seat 320 to the first mounting hole 322, and is arranged perpendicularly to the first mounting hole 322. The second mounting hole 323 is provided with a fastener 324 for fastening the welding needle 310, and the shell is provided with a third mounting hole 150 for mounting the fastener 324. Specifically, in the present embodiment, the fastener 324 is a screw, and it can be understood that the fastener 324 can also be a bolt, a stud or a bolt, etc. When the user needs to replace or adjust the position of the welding needle 310, the screw can be loosened to separate the welding needle 310 in the first mounting hole 322 from the fastening state, so as to adjust the position of the welding needle 310 relative to the metal mounting seat 320. Further, the second mounting hole 323 is arranged on the circumferential surface of the metal mounting seat 320 other than the flat part 321. Specifically, in the present embodiment, the second mounting hole 323 is arranged in parallel with the circuit board 210, so as to facilitate the user to adjust or replace the welding needle 310.

[0049] It is worth mentioning that the scheme that the welding pin 310 is arranged partially or completely away from the first mounting hole 322 can be not limited to the above-mentioned embodiments, and other embodiments also belong to the protection scope of the utility model, and will not be repeated here.

[0050] Please continue to refer to the attached Figure 3 As a preferred embodiment of the present embodiment, the utility model also comprises a limiting piece 325 fixed on the circuit board 210 for limiting the moving distance of the fastener 324, the limiting piece 325 is arranged close to the tail of the fastener 324, and the distance between the outer wall of the limiting piece 325 close to one side of the metal mounting seat 320 and the axis of the metal mounting seat 320 is less than the sum of the radius of the cross section of the metal mounting seat 320 and the length of the fastener 324. Specifically, in the present embodiment, the limiting piece 325 is a metal block, when the metal mounting seat 320 is a cylinder with a radius of R and the length of the fastener 324 is L, the distance D between the outer wall of the limiting piece 325 close to one side of the metal mounting seat 320 and the axis of the metal mounting seat 320 should be less than R+L, that is, D < R+L. In this way, it can be ensured that when the handheld spot welder needs to adjust the welding pin 310 during use, the fastener 324 will not fall off when the user loosens the fastener 324. If D ≥ R+L, the fastener 324 can be completely separated from the second mounting hole 323, thereby falling off and being lost.

[0051] The above is only the preferred embodiment of the utility model, and does not limit the patent scope of the utility model, and any equivalent structure or equivalent process transformation according to the content of the utility model specification and the attached drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A hand-held spot welder characterized by, The utility model relates to a handheld device, comprising: a holding assembly, which comprises a shell including an upper shell and a lower shell covering the upper shell; a circuit assembly installed in the shell, which comprises a circuit board and elements electrically connected to the circuit board; a welding head assembly installed in the shell, which comprises a pair of welding needles partially exposed outside the shell and a metal mounting seat for mounting the welding needles on the circuit board, the welding needles are spaced apart from each other, the metal mounting seat is a cylinder and has a flat surface connected to the circuit board on its peripheral surface, the metal mounting seat has a first mounting hole accommodating the welding needles in its axial direction, and the welding needles can be partially or completely separated from the first mounting hole.

2. The hand-held spot welder of claim 1, wherein, It also comprises a second mounting hole in the radial direction of the metal mounting seat, which extends from the outer wall of the metal mounting seat to the first mounting hole and is perpendicular to the first mounting hole, the second mounting hole is provided with a fastener for fastening the welding needle, and the shell is provided with a third mounting hole corresponding to the fastener.

3. The hand-held spot welder of claim 2, wherein, The second mounting hole is formed on the circumferential surface of the metal mounting seat other than the flat surface.

4. The hand-held spot welder of claim 2, wherein, It also comprises a limiting piece fixed to the circuit board for limiting the movement distance of the fastener, which is arranged near the tail of the fastener, and the distance between the limiting piece near the outer wall of one side of the metal mounting seat and the center of the metal mounting seat is less than the sum of the radius of the cross-section of the metal mounting seat and the length of the fastener.

5. The hand-held spot welder of claim 1, wherein, The welding needles are inclinedly arranged on the circuit board with the central axis of the shell as the axis of symmetry.

6. The hand-held spot welder of claim 1, wherein, The first mounting hole is coaxially arranged with the metal mounting seat, and the first mounting hole is a blind hole.

7. The hand-held spot welder of claim 1, wherein, The side of the upper shell is provided with a first clamping part, and the side of the lower shell is provided with a second clamping part corresponding to the first clamping part, and the first clamping part and the second clamping part can be buckled with each other.

8. The hand-held spot welder according to any one of claims 1 to 7, characterized in that The tail of the shell is provided with an interface connected with external equipment.

9. The hand-held spot welder according to any one of claims 1 to 7, characterized in that The shell is provided with a display screen for display.

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