Nozzle quick change mechanism and welding tool

Abstract

The present invention relates to the technical field of welding equipment, in particular to a nozzle quick-change mechanism and a welding tool thereof. The nozzle quick-change mechanism can be applicable to all welding tools, and is used to fix the nozzle on the welding tool, and comprises: a fixing member, fixedly mounted on the welding tool; a connecting member, slidably arranged on the fixing member, the nozzle having a bayonet, the connecting member having a hook for cooperating with the bayonet; and an elastic element, which is installed between the connecting member and the fixing member to provide elastic force for the connecting member. The present invention ingeniously uses the connecting member to hook and fix the nozzle on the welding tool under the action of the elastic element, so that the nozzle can be quickly loaded and unloaded on the welding tool by only moving the connecting member, and the entire loading and unloading process of the nozzle is very simple, which greatly improves the work efficiency, and when the nozzle is loaded and unloaded, the manipulated part is far away from the nozzle, which can effectively avoid the situation of scalding the staff during the nozzle disassembly process, thereby achieving safe production.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a nozzle quick-change mechanism and a welding tool thereof. Background Art

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. Among them, the nozzle is an important component on the welding tool, which is mainly used to spray protective gas, heating gas or solder liquid. The quality of the nozzle will directly affect the welding quality. In order to ensure that the nozzle can work stably under the designed process parameters, the nozzle needs to be periodically removed from the welding tool for cleaning and maintenance. The nozzle on the existing welding tool is usually fixed to the welding tool by threaded connection. The disadvantages of this nozzle installation structure are: when replacing the nozzle, since the nozzle is relatively hot (especially when the nozzle needs to be replaced during the use of the welding tool), when removing the nozzle, it is necessary to rotate it times to remove the nozzle, which is easy to cause scalding of the staff during the nozzle removal process, resulting in inconvenience in removal. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problem that the nozzle on the welding tool in the prior art is installed on the welding tool by means of threaded connection, which makes disassembly more troublesome and easily causes scalding of the staff by the nozzle, a nozzle quick-change mechanism and a welding tool thereof are provided, and the nozzle quick-change mechanism can be applicable to all welding tools.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a nozzle quick-change mechanism for fixing the nozzle on the welding tool, the nozzle quick-change mechanism comprising:

[0005] A fixing part, fixedly mounted on the welding tool;

[0006] A connecting piece is slidably arranged on the fixing piece, the nozzle is provided with a bayonet pin, and the connecting piece is provided with a hook for cooperating with the bayonet pin;

[0007] and an elastic element, which is installed between the connecting piece and the fixing piece to provide elastic force for the connecting piece; under the action of the elastic element, the connecting piece causes the hook to clamp the pin of the nozzle and press the nozzle onto the welding tool in a direction close to the welding tool; when the connecting piece is pushed in a direction away from the welding tool by an external force, the hook can be separated from the pin.

[0008] In this solution, the connecting piece is cleverly used to hook and fix the nozzle on the welding tool under the action of the elastic element. Therefore, when the nozzle is disassembled, it is only necessary to move the connecting piece to overcome the elastic force of the elastic element, so that the connecting piece and the hook thereon are displaced relative to the pin of the nozzle, so that the connecting piece can release the limit on the nozzle, thereby quickly disassembling the nozzle from the welding tool.

[0009] Furthermore, the bottom end of the connecting piece is provided with a first axial groove and a first circumferential groove which are interconnected and form the hook, the first axial groove is located below the first circumferential groove, and the bottom end of the first axial groove extends to the bottom end of the connecting piece.

[0010] Furthermore, a limiting groove for limiting the locking pin is provided on the upper surface of the hook.

[0011] Furthermore, the fixing member is provided with a second axial groove and a second circumferential groove which are interconnected, the second axial groove is located above the second circumferential groove, and a handle is fixed to the upper end of the connecting member, and the handle passes through the second axial groove.

[0012] Furthermore, the upper end of the connecting member has a first step surface, the bottom end of the fixing member has a second step surface, one end of the elastic element abuts against the first step surface, and the other end abuts against the second step surface.

[0013] Furthermore, the fixing member and the connecting member are both tubular, the connecting member is inserted into the fixing member, and heat dissipation holes are provided on the outer walls of the fixing member and the connecting member.

[0014] Furthermore, the elastic element is a spring.

[0015] The present invention also provides a welding tool, comprising the above-mentioned nozzle quick-change mechanism.

[0016] Furthermore, the welding tool is a molten droplet welding device, which includes a molten droplet welding device body and a tin outlet tube. The fixing part is fixed on the molten droplet welding device body or the tin outlet tube, and the nozzle is fixedly installed on the output end of the tin outlet tube through a connecting part.

[0017] Furthermore, the welding tool is a hot air welding device, which includes a hot air welding device body and a hot air pipe. The fixing part is fixed on the hot air welding device body or the hot air pipe, and the nozzle is fixedly installed on the output end of the hot air pipe through a connecting part.

[0018] The beneficial effects of the present invention are as follows: the nozzle quick-change mechanism of the present invention cleverly utilizes the connecting piece to hook and fix the nozzle on the welding tool under the action of the elastic element, so that the nozzle can be quickly loaded and unloaded on the welding tool only by moving the connecting piece. The entire loading and unloading process of the nozzle is very simple, which greatly improves the work efficiency. When the nozzle is loaded and unloaded, the operating part is far away from the nozzle, which can effectively avoid the situation of scalding the staff during the nozzle disassembly process, thereby achieving safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is an exploded schematic diagram of the nozzle quick-change mechanism of the present invention;

[0021] Figure 2 It is a three-dimensional schematic diagram of the nozzle quick change mechanism of the present invention

[0022] Figure 3 yes Figure 2 A is a partial enlarged schematic diagram;

[0023] Figure 4 It is a cross-sectional schematic diagram of the nozzle quick-change mechanism of the present invention at the bayonet (1-1);

[0024] Figure 5 yes Figure 4 A partial enlarged schematic diagram of B in the middle;

[0025] Figure 6 is a cross-sectional schematic diagram of the nozzle quick-change mechanism of the present invention at the handle (5);

[0026] Figure 7 It is a three-dimensional schematic diagram of the nozzle quick-change mechanism of the present invention being used on a droplet welding device;

[0027] Figure 8 It is a cross-sectional schematic diagram of the nozzle quick-change mechanism of the present invention being used on a droplet welding device;

[0028] Fig. 9 The utility model is a cross-sectional schematic diagram of the nozzle quick-change mechanism of the present invention being used on hot air welding equipment.

[0029] In the figure: 1, nozzle, 1-1, latch, 2, fixing part, 2-1, second axial groove, 2-2, second circumferential groove, 2-3, second step surface, 3, connecting part, 3-1, hook, 3-11, limiting groove, 3-2, first axial groove, 3-3, first circumferential groove, 3-4, first step surface, 4, elastic element, 5, handle, 6, heat dissipation hole, 7, molten drop welding equipment body, 8, tin outlet tube, 9, hot air welding equipment body, 10, hot air pipe. DETAILED DESCRIPTION

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0031] Example 1

[0032] like Figure 1-6 As shown, a nozzle quick-change mechanism is used to fix the nozzle 1 on the welding tool, and the nozzle quick-change mechanism includes:

[0033] A fixing member 2, fixedly mounted on the welding tool;

[0034] The connecting member 3 is slidably arranged on the fixing member 2. The nozzle 1 has a latch 1-1, and the connecting member 3 is provided with a hook 3-1 for cooperating with the latch 1-1.

[0035] And an elastic element 4 is installed between the connecting member 3 and the fixing member 2 to provide elastic force for the connecting member 3; under the action of the elastic element 4, the connecting member 3 causes the hook 3-1 to clamp the pin 1-1 of the nozzle 1, and presses the nozzle 1 onto the welding tool in a direction close to the welding tool; when the connecting member 3 is pushed by an external force in a direction away from the welding tool, the hook 3-1 can be disengaged from the pin 1-1.

[0036] The bottom end of the connecting piece 3 is provided with a first axial groove 3-2 and a first circumferential groove 3-3 which are interconnected, and form the hook 3-1, the first axial groove 3-2 is located below the first circumferential groove 3-3, and the bottom end of the first axial groove 3-2 extends to the bottom end of the connecting piece 3; during the disassembly of the nozzle 1, the connecting piece 3 can be rotated so that the pin 1-1 of the nozzle 1 reaches the first axial groove 3-2 from the first circumferential groove 3-3, and thus falls along the first axial groove 3-2; specifically, the first axial groove 3-2 can be arranged perpendicular to the first circumferential groove 3-3.

[0037] The upper surface of the hook 3-1 is provided with a limiting groove 3-11 for limiting the locking pin 1-1; the cooperation between the limiting groove 3-11 and the locking pin 1-1 can realize the circumferential fixation of the nozzle 1 and improve the firmness of the nozzle 1 installed on the welding tool.

[0038] The fixing member 2 is provided with a second axial groove 2-1 and a second circumferential groove 2-2 which are interconnected, and the second axial groove 2-1 is located above the second circumferential groove 2-2. A handle 5 is fixed to the upper end of the connecting member 3, and the handle 5 passes through the second axial groove 2-1. The connecting member 3 is driven by the handle 5 to move along the second axial groove 2-1 until the hook 3-1 thereon is disengaged from the pin 1-1 of the nozzle 1, and then the connecting member 3 can be rotated circumferentially to make the handle 5 press upward against the second circumferential groove 2-2, so as to axially position the connecting member 3 on the fixing member 2 in this state, and prevent the connecting member 3 from returning to the hook 3-1 and hooking the pin 1-1 under the action of the elastic element 4 when the handle 5 is released, so that the staff can free their hands to perform other operations, such as removing the nozzle 1 which has lost the connection relationship from the welding tool or transferring the nozzle 1. In this embodiment, the second axial groove 2-1 can be arranged perpendicular to the second circumferential groove 2-2.

[0039] The upper end of the connecting member 3 has a first step surface 3-4, the bottom end of the fixing member 2 has a second step surface 2-3, one end of the elastic element 4 abuts on the first step surface 3-4, and the other end abuts on the second step surface 2-3; specifically, in this embodiment, the second step surface 2-3 is located below the first step surface 3-4.

[0040] The fixing member 2 and the connecting member 3 are both tubular, and the connecting member 3 is inserted into the fixing member 2. Heat dissipation holes 6 are provided on the outer walls of the fixing member 2 and the connecting member 3. By inserting the connecting member 3 into the fixing member 2, a sliding fit relationship between the connecting member 3 and the fixing member 2 can be achieved, and the connecting member 3 can rotate relative to the fixing member 2.

[0041] The elastic element 4 is a spring; specifically, the sliding direction between the connecting member 3 and the fixing member 2 is consistent with the elastic force direction of the elastic element 4 .

[0042] In this embodiment, there may be more than one hook 3 - 1 and more than one latch pin 1 - 1 , and the hooks 3 - 1 and the latch pins 1 - 1 correspond one to one.

[0043] The principle of the nozzle quick change mechanism in this embodiment is described as follows:

[0044] When the nozzle 1 is installed: the spring is compressed between the first step surface 3-4 of the connecting member 3 and the second step surface 2-3 of the fixing member 2. Since the spring in the compressed state drives the connecting member 3 to move upward, the hook 3-1 of the connecting member 3 can hook the pin 1-1 of the nozzle 1 upward under the action of the spring, so that the nozzle 1 is fixed on the welding tool;

[0045] When the nozzle 1 is disassembled, the handle 5 is used to drive the connecting member 3 to move downward along the second axial groove 2-1, and the spring will be further compressed, so that the limiting groove 3-11 of the hook 3-1 is disengaged from the pin 1-1 of the nozzle 1, and then the handle 5 is turned to make the handle 5 located in the second circumferential groove 2-2. On the one hand, the pin 1-1 of the nozzle 1 can reach the first axial groove 3-2 from the first circumferential groove 3-3, so that the nozzle 1 falls along the first axial groove 3-2; on the other hand, the handle 5 is made to abut against the second circumferential groove 2-2, so that the connecting member 3 in this state is axially positioned on the fixing member 2, and it is prevented that when the handle 5 is released, the connecting member 3 returns to the hook 3-1 again under the action of the elastic element 4 to hook the pin 1-1, so that the staff can free their hands to perform other operations, such as removing the nozzle 1 that has lost its connection relationship from the welding tool or transferring the nozzle 1;

[0046] When installing the nozzle 1, move the handle 5 to the second circumferential groove 2-2, and then place the nozzle 1 on the bottom end of the connecting piece 3, so that the pin 1-1 of the nozzle 1 reaches the first circumferential groove 3-3 through the first axial groove 3-2, and then move the handle 5 to the second axial groove 2-1. After releasing the handle 5, the connecting piece 3 moves upward under the action of the spring, thereby pressing the nozzle 1 onto the welding tool.

[0047] Example 2

[0048] like Figure 7 and 8 As shown, a welding tool includes the nozzle quick-change mechanism of the above-mentioned embodiment 1, the welding tool is a molten droplet welding device, the molten droplet welding device includes a molten droplet welding device body 7 and a tin outlet tube 8, the fixing part 2 is fixed on the molten droplet welding device body 7 or the tin outlet tube 8, and the nozzle 1 is fixedly installed on the output end of the tin outlet tube 8 through the connecting part 3.

[0049] Example 3

[0050] like Fig. 9 As shown, a welding tool includes the nozzle quick-change mechanism of the above-mentioned embodiment 1, the welding tool is a hot air welding device, the hot air welding device includes a hot air welding device body 9 and a hot air pipe 10, the fixing part 2 is fixed on the hot air welding device body 9 or the hot air pipe 10, and the nozzle 1 is fixedly installed on the output end of the hot air pipe 10 through the connecting part 3.

[0051] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A nozzle quick-change mechanism for fixing a nozzle (1) on a welding tool, characterized in that: The nozzle quick change mechanism includes: A fixing member (2) fixedly mounted on the welding tool; A connecting member (3) is slidably arranged on the fixing member (2); the nozzle (1) is provided with a latch (1-1); and the connecting member (3) is provided with a latch hook (3-1) for cooperating with the latch pin (1-1); and an elastic element (4) installed between the connecting piece (3) and the fixing piece (2) to provide elastic force for the connecting piece (3); under the action of the elastic element (4), the connecting piece (3) causes the hook (3-1) to clamp the latch (1-1) of the nozzle (1), and presses the nozzle (1) against the welding tool in a direction approaching the welding tool; when the connecting piece (3) is pushed by an external force in a direction away from the welding tool, the hook (3-1) can be separated from the latch (1-1).

2. The nozzle quick-change mechanism according to claim 1, characterized in that: The bottom end of the connecting piece (3) is provided with a first axial groove (3-2) and a first circumferential groove (3-3) which are interconnected and form the hook (3-1); the first axial groove (3-2) is located below the first circumferential groove (3-3); and the bottom end of the first axial groove (3-2) extends to the bottom end of the connecting piece (3).

3. The nozzle quick-change mechanism according to claim 1 or 2, characterized in that: The upper surface of the hook (3-1) is provided with a limiting groove (3-11) for limiting the locking pin (1-1).

4. The nozzle quick-change mechanism according to claim 1, characterized in that: The fixing member (2) is provided with a second axial groove (2-1) and a second circumferential groove (2-2) which are interconnected, the second axial groove (2-1) being located above the second circumferential groove (2-2), and a handle (5) is fixed to the upper end of the connecting member (3), the handle (5) passing through the second axial groove (2-1).

5. The nozzle quick-change mechanism according to claim 1, characterized in that: The upper end of the connecting member (3) has a first step surface (3-4), the bottom end of the fixing member (2) has a second step surface (2-3), one end of the elastic element (4) abuts against the first step surface (3-4), and the other end abuts against the second step surface (2-3).

6. The nozzle quick-change mechanism according to claim 1, characterized in that: The fixing member (2) and the connecting member (3) are both tubular, the connecting member (3) is inserted into the fixing member (2), and heat dissipation holes (6) are provided on the outer walls of the fixing member (2) and the connecting member (3).

7. The nozzle quick-change mechanism according to claim 1, characterized in that: The elastic element (4) is a spring.

8. A welding tool, characterized in that: It comprises the nozzle quick-change mechanism as described in any one of claims 1 to 7.

9. The welding tool according to claim 8, characterized in that: The welding tool is a molten drop welding device, which comprises a molten drop welding device body (7) and a tin outlet tube (8), the fixing part (2) is fixed on the molten drop welding device body (7) or the tin outlet tube (8), and the nozzle (1) is fixedly installed on the output end of the tin outlet tube (8) through a connecting part (3).

10. The welding tool according to claim 8, characterized in that: The welding tool is a hot air welding device, which comprises a hot air welding device body (9) and a hot air pipe (10). The fixing member (2) is fixed on the hot air welding device body (9) or the hot air pipe (10), and the nozzle (1) is fixedly mounted on the output end of the hot air pipe (10) via a connecting member (3).

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