Welding tool

Abstract

The utility model discloses a welding tool which comprises a lower die body and an upper die body, the upper die body is located above the lower die body, a welding space is formed between the upper die body and the lower die body, the welding space is used for placing a first welding piece and a second welding piece, the first welding piece is fixed relative to the lower die body, and the second welding piece is fixed relative to the lower die body. The upper die body is used for driving the second welding piece to do friction motion relative to the first welding piece so as to perform welding at the friction position; wherein at least one of the lower die body and the upper die body is provided with an air blowing channel, the air blowing channel is connected with air blowing equipment, and the air blowing channel is used for blowing air to the welding positions of the first welding part and the second welding part. According to the welding tool, in the welding process, the blowing device and gas from the blowing channel of the blowing device are continuously utilized to face the welding position of the first welding piece and the welding position of the second welding piece so as to remove burrs, and the production cost and the labor cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of parts welding, in particular to a welding tool. Background Art

[0002] The defrost grille is a grid-like component welded to the vehicle's dashboard. In the industry, vibration friction welding is used to weld the dashboard frame and the defrost grille. After welding, the burrs caused by the friction of the welding ribs will be exposed on the product surface, resulting in poor appearance.

[0003] In the prior art, during the welding process of the defrost grille and the instrument panel, some burrs are generated, which are removed manually and repaired at a site specialized for burr removal, thereby increasing labor costs. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a welding tool, which continuously uses the gas from the blowing device and its blowing channel to the welding position of the first welding part and the second welding part to remove burrs during the welding process, thereby reducing production costs and labor costs.

[0005] According to the welding tooling of the embodiment of the utility model, it includes a lower mold body and an upper mold body, the upper mold body is located above the lower mold body and a welding space is formed between the upper mold body and the lower mold body, the welding space is used to place a first welding part and a second welding part, the first welding part is relatively fixed to the lower mold body, and the upper mold body is used to drive the second welding part to frictionally move relative to the first welding part to perform welding at the friction position; wherein, at least one of the lower mold body and the upper mold body is provided with a blowing channel, the blowing channel is connected to a blowing device, and the blowing channel is used to blow air to the welding positions of the first welding part and the second welding part.

[0006] According to the welding tooling of the embodiment of the utility model, during the process of the upper mold body driving the second welding part to rub against and weld with the first welding part located on the lower mold body, the gas of the blowing equipment is continuously blown toward the welding positions of the first welding part and the second welding part through the blowing channel, thereby removing burrs during the welding process of the first welding part and the second welding part, thereby reducing production costs and labor costs.

[0007] According to the welding tooling of the embodiment of the utility model, the lower mold body is provided with a blowing groove, the blowing channel is located in the blowing groove, the first welding part and the second welding part are provided with two welding positions distributed along the first direction, and the two welding positions are located on both sides of the upper part of the blowing groove, and the gas in the blowing channel enters the gap between the first welding part and the second welding part toward the upper part of the blowing groove to blow air toward the two welding positions.

[0008] According to the welding tooling of the embodiment of the utility model, the blowing channels include at least two groups and each group includes a plurality of the blowing channels, the plurality of the blowing channels in each group are spaced apart along a second direction of welding between the first welding part and the second welding part, and the second direction intersects with the first direction.

[0009] According to the welding tool of the embodiment of the utility model, the blowing channels at one end of the first direction in at least two groups of the blowing channels are suitable for being close to one welding position and the blowing channels at the other end are suitable for being close to another welding position.

[0010] According to the welding tool of the embodiment of the utility model, the distance between the ends of the blowing channels located at two ends of the first direction in at least two groups of the blowing channels is smaller than the distance between the two welding positions.

[0011] According to the welding tool of the embodiment of the utility model, the blowing channels are divided into two groups, and the multiple blowing channels in one group and the multiple blowing channels in the other group are staggered and distributed one by one along the second direction.

[0012] According to the welding tool of the embodiment of the utility model, the blowing channel is formed by a through hole provided at the bottom of the blowing groove.

[0013] According to the welding tooling of the embodiment of the utility model, the air blowing device is connected to a main air valve, and the main air valve is used to electrically connect to a control module, and the control module controls the opening and closing of the main air valve and controls the movement of the upper mold body.

[0014] According to the welding tooling of the embodiment of the utility model, the upper mold body includes a pressing block, the second welding part is connected to the pressing block, and the upper mold body moves so that the pressing block drives the second welding part to move frictionally relative to the first welding part.

[0015] According to the welding tool of the embodiment of the utility model, one of the bottom of the pressing block and the second welding piece is provided with a crimping protrusion and the other is provided with a crimping groove, and the crimping protrusion is inserted into the crimping groove to connect the pressing block with the second welding piece.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1It is a partial cross-sectional structural schematic diagram of a welding tooling of an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the instrument panel framework of an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a defrost grid of an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the positional relationship between the welding tool and the first welding part and the second welding part of this practical embodiment.

[0022] Reference numerals:

[0023] Welding tooling 100,

[0024] Lower mold body 1, blowing groove 11, blowing channel 12, upper mold body 2, pressing block 21, welding part 3, instrument panel frame 31, avoidance hole 311, defrost grille 32, grille hole 321, welding position 33. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] Reference below Figure 1-Figure 4 The welding tool 100 of the embodiment of the utility model continuously uses the gas from the blowing device and its blowing channel 12 to blow toward the welding position 33 of the first welding part 3 and the second welding part to remove burrs during the welding process, thereby reducing production costs and labor costs.

[0027] like Figure 1-4 As shown, the welding tool 100 according to the embodiment of the utility model includes: a lower mold body 1 and an upper mold body 2.

[0028] Among them, the upper mold body 2 is located above the lower mold body 1 and a welding space is formed between the upper mold body 2 and the lower mold body 1, and the welding space is used to place the first welding part and the second welding part. The first welding part is relatively fixed to the lower mold body 1, and the upper mold body 2 is used to drive the second welding part to frictionally move relative to the first welding part to perform welding at the friction position; wherein, at least one of the lower mold body 1 and the upper mold body 2 is provided with a blowing channel 12, and the blowing channel 12 is connected to a blowing device, and the blowing channel 12 is used to blow air to the welding position 33 of the first welding part and the second welding part.

[0029] In practice, the first welded part is the instrument panel frame 31, and the second welded part is the defrost grille 32. The instrument panel frame 31 and the defrost grille 32 are welded by friction welding. Friction welding refers to the use of friction heat generated by mutual friction between thermoplastics to heat and melt the friction surfaces, and then they can be connected together after pressurization and cooling.

[0030] Specifically, the instrument panel frame 31 is mounted on the lower mold body 1, and the defrost grille 32 is mounted on the upper mold body 2, and the upper mold body 2 is controlled to move frictionally relative to the lower mold body 1 to frictionally weld the instrument panel frame 31 and the defrost grille 32. The air blowing channel 12 is connected to the air blowing device, and the air blowing device supplies air to the air blowing channel 12. The gas coming out of the air blowing channel 12 is directed toward the welding position 33 of the instrument panel frame 31 and the defrost grille 32, and the burrs or burrs are blown away by high-pressure gas, so as to keep the appearance of the instrument panel frame 31 and the defrost grille 32 good after welding.

[0031] Furthermore, if the defrost grille 32 is provided with a grille hole 321, and the instrument panel frame 31 is provided with an avoidance hole 311, the position of the grille hole 321 is opposite to the position of the avoidance hole 311, when the defrost grille 32 is friction-welded with the instrument panel frame 31, the defrost grille 32 is provided with a convex rib, and the convex rib is rubbed against the plane of the instrument panel frame 31, and the material of the instrument panel frame 31 is PP+EPDM-TD20 or PP+LGF20, wherein PP represents polypropylene, EPDM represents elastomer, and TD20 represents that the amount of talcum powder added is 20%, LGF is long glass fiber, and PP-LGF20 is polypropylene added with 20 % long glass fiber material; the material of the defrost grille 32 is PP+EPDM-TD20 or PP+TD20; after the friction welding between the rib position of the defrost grille 32 and the flat contact position of the instrument panel frame 31, some burrs or burrs are exposed at the positions of the grille holes 321 and the avoidance holes 311, resulting in poor appearance and possibly affecting the ventilation effect of the defrost grille 32; by connecting the blowing channel 12 with the blowing equipment, the blowing equipment can use a pump and a blowing pipeline to transport gas to the blowing channel 12, so that the gas is pressurized and blown out from the blowing channel 12 toward the welding position 33 to blow away the burrs or burrs.

[0032] Therefore, during the welding process of the dashboard frame 31 and the defrost grille 32, the welding tool 100 of the embodiment of the utility model continuously uses the blowing equipment and its blowing channel 12 to blow toward the welding position 33 of the first welding part and the second welding part to remove burrs, thereby reducing production costs and labor costs.

[0033] In some embodiments, the lower mold body 1 is provided with a blowing groove 11, the blowing channel 12 is located at the blowing groove 11, the first welding part and the second welding part are provided with two welding positions 33 distributed along the first direction, and the two welding positions 33 are located on both sides of the upper part of the blowing groove 11, and the gas in the blowing channel 12 enters the gap between the first welding part and the second welding part toward the upper part of the blowing groove 11 to blow toward the two welding positions 33.

[0034] In practice, the blowing slot 11 is arranged on the lower mold body 1, and the instrument panel frame 31 is connected to the lower mold body 1, and the avoidance hole 311 of the instrument panel frame 31 is directly opposite to the slot position of the blowing slot 11, and the grille hole 321 of the defrost grille 32 connected to the upper mold body 2 is directly opposite to the avoidance hole 311 of the lower mold body 1, and the defrost grille 32 and the instrument panel frame 31 are in relative friction motion; wherein the first direction is the position on both sides of the avoidance hole 311 and the grille hole 321, and the second direction is the position between the defrost grille 32 and the instrument panel frame 31, and the first direction and the second direction intersect; during actual welding, the instrument panel frame 31 frictionally moves relative to the defrost grille 32 along the length direction, that is, the second direction frictional movement; the gas flowing out of the blowing channel 12 arranged in the blowing groove 11 is blown upward and on both sides of the avoidance hole 311 to the gap between the instrument panel frame 31 and the defrost grille 32, thereby blowing to the friction welding position 33, and then blowing away the burrs or burrs of the welding between the instrument panel frame 31 and the defrost grille 32.

[0035] Therefore, by setting the blowing groove 11 on the lower mold body 1 and setting the blowing channel 12 on the lower mold body 1, it is convenient for the gas to be blown from bottom to top along the blowing groove 11 and toward the welding position 33 of the instrument panel frame 31 and the defrost grille 32 on both sides of the upper end of the blowing groove 11, and it is convenient to set the blowing channel 12, and the blowing and welding actions do not affect each other, so that the instrument panel frame 31 and the defrost grille 32 are always blown during the welding process to ensure the flatness of the welding.

[0036] In some embodiments, the blowing channels 12 include at least two groups, each group includes a plurality of blowing channels 12 , and the plurality of blowing channels 12 in each group are spaced apart along a second direction in which the first welding part and the second welding part are welded, and the second direction intersects the first direction.

[0037] In practice, when the blowing channels 12 are set to at least two groups, the volume of gas blown out of the blowing channels 12 can be increased to improve the blowing effect; the distribution direction of the multiple blowing channels 12 in each group is the length direction of the avoidance holes 311 and the grille holes 321 of the instrument panel frame 31 and the defrost grille 32. After the instrument panel frame 31 and the defrost grille 32 are welded, burrs or burrs will be exposed along the positions where the avoidance holes 311 and the grille holes 321 are provided, thereby affecting the appearance and ventilation of the grille holes 321. Even if burrs or burrs appear at other welding positions 33 between the instrument panel frame 31 and the defrost grille 32, they will be hidden and do not need to be blown away. Therefore, it is only necessary to blow air around the positions of the avoidance holes 311 and the grille holes 321 of the instrument panel frame 31.

[0038] Reference Figure 1 As shown, the gas of the blowing channel 12 of the embodiment of the utility model is mainly directed toward the welding positions 33 around the avoidance holes 311 of the instrument panel frame 31 and the grille holes 321 of the defrost grille 32, that is, each group of multiple blowing channels 12 is arranged along the extension direction of the avoidance holes 311 and the grille holes 321, which can remove the burrs or burrs on the welding positions 33 around the avoidance holes 311 and the grille holes 321 to prevent the burrs or burrs from being exposed from the avoidance holes 311 and the grille holes 321 and affecting the appearance.

[0039] In some embodiments, the blowing channels 12 at one end of the at least two groups of blowing channels 12 in the first direction are suitable for being close to one welding position 33 , and the blowing channels 12 at the other end are suitable for being close to another welding position 33 .

[0040] In practice, the first direction is the two sides of the avoidance hole 311 of the instrument panel frame 31, and the two sides of the grille hole 321 of the defrost grille 32. The instrument panel frame 31 and the grille hole 321 are provided with a welding position 33 on one side along the first direction, and another welding position 33 is provided on the other side. When the gas flowing out of one group of blowing channels 12 is close to the welding position 33 on one side, and the gas flowing out of another group of blowing channels 12 is close to the welding position 33 on the other side, the gas coming out of the blowing channels 12 can be blown to the two welding positions 33 in time, and the burrs or burrs on the two welding positions 33 can be removed.

[0041] Reference Figure 1 As shown, the blowing channels 12 are arranged in two groups, and one group of blowing channels 12 is located at Figure 1 The left side and another set of blowing channels 12 are located Figure 1On the right side, two groups of blowing channels 12 can be used to make each group of blowing channels 12 correspond to a closer welding position 33, and it is convenient to blow air to the closer welding position 33. Of course, the gases flowing out of the two groups of blowing channels 12 can also be mixed and enter the welding position 33 on one side at will, thereby improving the effect of removing welding burrs or burrs on the instrument panel frame 31 and the defrost grille 32.

[0042] In some embodiments, the distance between the ends of the blowing channels 12 located at two ends of the first direction in at least two groups of blowing channels 12 is smaller than the distance between the two welding positions 33 .

[0043] That is to say, when the instrument panel frame 31 is connected to the lower mold body 1, and the defrost grille 32 is connected to the upper mold body 2, the contact position between the convex rib of the defrost grille 32 and the plane of the instrument panel frame 31 is the welding position 33, and the distance between the ends of the blowing channel 12 at both ends along the first direction is smaller than the distance between the two welding positions 33, which is equivalent to the two welding positions 33 being located at the top outer side of the blowing slot 11, respectively. The gas in the blowing channel 12 can be blown upward along the blowing slot 11 and then blown to the two welding positions 33, which can achieve the purpose of blowing and removing burrs from the welding positions 33. At the same time, the two welding positions 33 are located at the top outer side of the blowing slot 11, so the welding positions 33 are not directly above the blowing slot 11 but in a suspended state, and the welding positions 33 are supported, which is convenient for pressing and rubbing during welding.

[0044] In some embodiments, the blowing channels 12 are divided into two groups, and the multiple blowing channels 12 in one group are staggered and distributed one by one with the multiple blowing channels 12 in the other group along the second direction.

[0045] In practice, that is to say, the gas blown out from one group of blowing channels 12 and the gas blown out from another group of blowing channels 12 can be mixed and blown toward two welding positions 33. Then, the multiple blowing channels 12 of one group and the multiple blowing channels 12 of another group are distributed one by one at intervals, which can reduce the number of blowing channels 12 and effectively remove burrs or rough edges from the two welding positions 33.

[0046] In some embodiments, the blowing channel 12 is formed by setting a through hole at the bottom of the blowing slot 11 .

[0047] Specifically, a plurality of through holes are provided at different positions on the bottom of the blowing groove 11 to form a plurality of blowing channels 12. Thus, the blowing channels 12 can be conveniently provided without having to provide a large number of pipelines aligned with the welding positions 33, thereby reducing the complexity of the pipeline provision. In addition, the blowing channels 12 have good stability, and the gas is always blown out from a fixed position to remove burrs toward the two welding positions 33.

[0048] In some embodiments, the blowing device is connected to a main air valve, and the main air valve is used to electrically connect to a control module. The control module controls the opening and closing of the main air valve and controls the movement of the upper mold body 2 .

[0049] In practice, multiple blowing channels 12 can be centrally connected to the main air valve. When the control module controls the opening and closing of the main air valve, the gas is controlled to blow to the multiple blowing channels 12 and then to the welding position 33. The main air valve is controlled by the control module to realize automatic control of blowing and reduce labor costs.

[0050] In addition, the control module also controls the movement of the upper mold body 2 relative to the lower mold body 1. The specific driving structure for driving the movement of the upper mold body 2 can adopt the driving structure commonly used in the prior art. For example, the movement of the upper mold body 2 can be achieved by providing alternating current through an electromagnet to generate magnetic pole switching so that the upper mold body 2 can repeatedly rub against the lower mold body 1 along the second direction, that is, the instrument panel frame 31 and the defrost grille 32 move back and forth rubbing against each other along the second direction; for example, the center point of the instrument panel frame 31 and the defrost grille 32 moves 2 mm on both sides along the second direction to achieve relative friction. The movement of the upper mold body 2 is controlled by the control module, so that the upper mold body 2 drives the defrost grille 32 to move relative to the instrument panel frame 31 connected to the lower mold body 1, thereby achieving high-frequency and regular friction movement to improve welding efficiency.

[0051] In some embodiments, the upper mold body 2 includes a pressing block 21, and the second welding part is connected to the pressing block 21. The upper mold body 2 moves so that the pressing block 21 drives the second welding part to move frictionally relative to the first welding part.

[0052] Among them, the pressing block 21 of the upper mold body 2 is mainly used to connect with the defrost grille 32, and press the defrost grille 32 to keep the defrost grille 32 in a pressed state relative to the auxiliary instrument panel frame 31, thereby increasing the friction between the defrost grille 32 and the auxiliary instrument panel frame 31 to improve the efficiency of friction motion welding.

[0053] In some embodiments, one of the bottom of the pressing block 21 and the second welding piece is provided with a crimping protrusion and the other is provided with a crimping groove, and the crimping protrusion is inserted into the crimping groove to connect the pressing block 21 to the second welding piece.

[0054] That is to say, the pressing block 21 and the defrost grille 32 are connected in a detachable manner, so that different defrost grilles 32 can be connected to different instrument panel frames 31 , thereby achieving friction welding between multiple groups of defrost grilles 32 and instrument panel frames 31 .

[0055] If a crimping protrusion is provided at the bottom of the pressing block 21 and a crimping groove is provided at the defrost grille 32, the pressing block 21 and the defrost grille 32 can be quickly connected and disassembled, and the upper mold body 2 can drive the pressing block 21 to move when moving so that the pressing block 21 drives the defrost grille 32 to frictionally move relative to the instrument panel frame 31.

[0056] 1. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0057] 2. In the description of the present utility model, "first feature" and "second feature" may include one or more of these features.

[0058] 3. In the description of this utility model, "plurality" means two or more.

[0059] 4. In the description of the present invention, a first feature “above” or “below” a second feature may include that the first and second features are directly in contact, or may include that the first and second features are not in direct contact but are in contact via another feature between them.

[0060] 5. In the description of the present utility model, the first feature “above”, “above” and “on” the second feature includes the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A welding tool, characterized in that: include: A lower mold body and an upper mold body, wherein the upper mold body is located above the lower mold body and a welding space is formed between the upper mold body and the lower mold body, wherein the welding space is used to place a first welding piece and a second welding piece, wherein the first welding piece is relatively fixed to the lower mold body, and the upper mold body is used to drive the second welding piece to frictionally move relative to the first welding piece to perform welding at a friction position; Wherein, at least one of the lower mold body and the upper mold body is provided with a blowing channel, the blowing channel is connected to a blowing device, and the blowing channel is used to blow air toward the welding positions of the first welding part and the second welding part.

2. The welding tool according to claim 1, characterized in that: The lower mold body is provided with a blowing groove, and the blowing channel is located in the blowing groove. The first welding part and the second welding part are provided with two welding positions distributed along the first direction, and the two welding positions are located on both sides of the upper part of the blowing groove. The gas in the blowing channel enters the gap between the first welding part and the second welding part toward the upper part of the blowing groove to blow toward the two welding positions.

3. The welding tool according to claim 2, characterized in that: The blowing channels include at least two groups, and each group includes a plurality of the blowing channels. The plurality of the blowing channels in each group are spaced apart along a second direction in which the first welding part and the second welding part are welded, and the second direction intersects the first direction.

4. The welding tool according to claim 3, characterized in that: The blowing channels at one end of the at least two groups of blowing channels in the first direction are suitable for being close to one welding position, and the blowing channels at the other end are suitable for being close to another welding position.

5. The welding tool according to claim 3, characterized in that: The distance between the ends of the blowing channels located at two ends of the first direction in at least two groups of the blowing channels is smaller than the distance between the two welding positions.

6. The welding tool according to claim 3, characterized in that: The blowing channels are divided into two groups, and the multiple blowing channels in one group and the multiple blowing channels in the other group are staggered and distributed along the second direction.

7. The welding tool according to claim 2, characterized in that: The air blowing channel is formed by setting a through hole at the bottom of the air blowing groove.

8. The welding tool according to claim 1, characterized in that: The air blowing device is connected to a main air valve, and the main air valve is used to electrically connect to a control module. The control module controls the opening and closing of the main air valve and controls the movement of the upper mold body.

9. The welding tool according to claim 1, characterized in that: The upper mold body includes a pressing block, the second welding piece is connected to the pressing block, and the upper mold body moves so that the pressing block drives the second welding piece to move frictionally relative to the first welding piece.

10. The welding tool according to claim 9, characterized in that: One of the bottom of the pressing block and the second welding piece is provided with a pressing protrusion and the other is provided with a pressing groove, and the pressing protrusion is inserted into the pressing groove to connect the pressing block with the second welding piece.

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