Casting and profile welding back penetration tool

Abstract

The utility model relates to the field of welding tools, in particular to a casting and profile welding back penetration tool which comprises a bearing frame and a plurality of side frames arranged on the periphery of the bearing frame, the side frames are used for being supported on a casting in a jacking mode, and the side frames are in sliding fit with the bearing frame; a plurality of fixing pins are arranged on the bearing frame, each side frame corresponds to at least one fixing pin, the corresponding fixing pin is sleeved with the side frame in a sliding mode, and an assembly bolt connected to the side frame in a threaded mode penetrates through the bearing frame in a sliding mode. The method has the advantage that the welding quality is improved.

Description

Technical Field

[0001] This application relates to the field of welding tooling, and particularly to a welding backlight tooling for castings and profiles. Background Art

[0002] Arc welding is a fusion welding method using an electric arc as the heat source. It melts the welding rod and the workpiece with the heat generated by the electric arc discharge, and after condensation, a weld seam is formed to obtain a firm joint.

[0003] In the related art, an automotive part is disclosed, which mainly consists of a casting and a profile. Slots are opened on the profile and the casting is placed therein, and then the outer side walls around the casting are welded to the profile by arc welding.

[0004] However, since both the casting and the profile are relatively thin and the welding temperature of arc welding is high, the casting and the profile are prone to form welding backlight due to high temperature, resulting in deformation of both, and the welding quality is poor, with obvious deficiencies. Utility Model Content

[0005] In order to improve the welding quality, this application provides a welding backlight tooling for castings and profiles.

[0006] The welding backlight tooling for castings and profiles provided by this application adopts the following technical solutions:

[0007] A welding backlight tooling for castings and profiles includes a carrier frame and a plurality of side frames arranged around the carrier frame. The plurality of side frames are all used to support against the casting, and the side frames are slidably matched with the carrier frame.

[0008] By adopting the above technical solution, before welding, the worker places the carrier frame inside the casting and slides the side frames to make them close to the casting. In this way, during the welding process, the side frames and the carrier frame can absorb heat from the casting, thereby realizing the rapid heat dissipation at the welding joint between the casting and the carrier frame, and further reducing the possibility of welding backlight phenomenon.

[0009] Optionally, a plurality of fixing pins are arranged on the carrier frame. Each side frame corresponds to at least one fixing pin, and the side frame is slidably sleeved on the corresponding fixing pin. An assembly bolt is slidably passed through the carrier frame and threadedly connected to the side frame.

[0010] By adopting the above technical solution, the assembly bolt assembles the carrier frame and the side frame into an integral body, which facilitates the worker to pick up and place the tooling.

[0011] Optionally, a compression spring is sleeved on the fixing pin and abuts between the carrier frame and the side frame.

[0012] By adopting the above technical solution, the compression spring can push the side frame to closely adhere to the side wall of the casting, thereby facilitating the rapid installation of the tooling in place.

[0013] Optionally, a plug hole is provided on the carrier frame and a bracket is arranged relative to the plug hole, a pin is slidably passed through the bracket and extends to the plug hole, a plurality of side frames correspond to each other in pairs and a pull wire is tied between two corresponding side frames, and the pull wire passes around one end of the pin located in the plug hole.

[0014] By adopting the above technical solution, the worker holds the bracket and presses the pin into the plug hole, so that the pin pulls the corresponding side frame close to the load-bearing frame through the pull wire, further improving the convenience of taking and placing the tooling.

[0015] Optionally, one end of the latch pin located in the plug hole is provided with an embedding groove for each pull wire to be embedded in.

[0016] By adopting the above technical solution, the embedded groove limits the pull wire, reducing the possibility of it being offset from the end of the pin, ensuring that the pull wire can pull the corresponding side frame.

[0017] Optionally, a heat insulating layer is provided between the bracket and the support frame, and the latch and the plug hole are clearance-fitted.

[0018] By adopting the above technical solution, the heat insulation layer and the clearance fit both reduce the possibility of heat being transferred to the bracket, causing workers to be burned when taking and placing work clothes.

[0019] Optionally, a limiting ring is provided on the fixing sleeve of the latch pin, and the limiting ring supports the inner side wall of the bracket.

[0020] By adopting the above technical solution, the limiting ring has a limiting effect on the latch, thereby reducing the possibility of the latch accidentally falling off the bracket.

[0021] Optionally, an open liquid tank is provided on the top of the bracket.

[0022] By adopting the above technical solution, when the tooling is installed on the casting, a small amount of coolant is contained in the liquid tank, and the coolant can absorb the heat transferred to the bracket during the welding process, thereby further reducing the possibility of workers being burned.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Before welding, workers place the carrier frame in the casting and slide the side frame to make it close to the casting. In this way, during the welding process, the side frame and the carrier frame can absorb heat from the casting, thereby achieving rapid heat dissipation at the welding point between the casting and the carrier frame, thereby reducing the possibility of welding back penetration;

[0025] 2. The worker holds the bracket and presses the pin into the plug hole, so that the pin pulls the corresponding side frame close to the load-bearing frame through the pull wire, further improving the convenience of taking and placing the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the positional relationship among the bracket, the pin and the stay wire in the embodiment of the present application.

[0028] Explanation of reference numerals: 1, casting; 2, profile; 3, carrier; 31, insertion hole; 4, side frame; 5, fixing pin; 6, assembly bolt; 7, compression spring; 8, bracket; 81, liquid filling groove; 9, pin; 10, stay wire; 11, heat insulation layer; 12, limit ring. Detailed implementation manners

[0029] The following further Figure 1-2 describes the present application in detail with reference to the

[0030] The embodiment of the present application discloses a welding back penetration tooling for a casting and a profile.

[0031] Referring to Figure 1 , the welding back penetration tooling for the casting and the profile includes a carrier 3 in a "day" shape and four side frames 4 arranged around the carrier 3. The side frames 4 are used to support against the casting 1, and each side frame 4 is threadedly connected with an assembly bolt 6 that slidably penetrates through the carrier 3.

[0032] Referring to Figure 1 , a plurality of fixing pins 5 are welded on the carrier 3. Each side frame 4 corresponds to at least one fixing pin 5 and the side frame 4 is slidably sleeved on the corresponding fixing pin 5. A compression spring 7 that propping against between the carrier 3 and the side frame 4 is sleeved on the fixing pin 5. Both the carrier 3 and the side frame 4 are made of metal copper.

[0033] Referring to Figure 1 , before welding, the worker manually places the carrier 3 and the side frame 4 into the casting 1. Under the action of the compression spring 7, the side frame 4 abuts against the side wall of the casting 1.

[0034] During the welding process, the carrier 3 and the side frame 4 can absorb the heat on the casting 1, so as to achieve rapid heat dissipation at the welding position of the casting 1 and the profile 2, reducing the possibility of welding back penetration phenomenon of the profile 2 and the casting 1 caused by too high welding temperature.

[0035] Referring to Figure 1 and Figure 2 , the carrier 3 is provided with insertion holes 31 and a bracket 8 in a gate shape is bolted at a position opposite to the insertion holes 31. A pin 9 that extends into the insertion holes 31 is slidably penetrated through the bracket 8, and the pin 9 has a clearance fit with the insertion holes 31.

[0036] The four side frames 4 are grouped in pairs, and a wire 10 is tied between the two side frames 4 in the same group. The wire 10 is made of heat-resistant metal wire. One end of the pin 9 located in the insertion hole 31 is provided with a plurality of grooves (not shown in the figure), and each wire 10 corresponds to a groove and bypasses through the corresponding groove.

[0037] Referring to Figure 1 and Figure 2 , the worker holds the bracket 8 and presses the pin 9 into the insertion hole 31. In this way, the pin 9 pulls the corresponding side frame 4 close to the carrier 3 through the wire 10, and one hand can realize the picking and placing of the tooling, improving the simplicity of picking and placing the tooling.

[0038] Referring to Figure 1 and Figure 2 , a limiting ring 12 is fixedly sleeved on the pin 9, and the limiting ring 12 abuts against the inner side wall of the bracket 8. The limiting ring 12 reduces the possibility of the pin 9 accidentally falling off the bracket 8.

[0039] Referring to Figure 1 and Figure 2 , a heat insulation layer 11 is padded between the bracket 8 and the carrier 3. The heat insulation layer 11 reduces the possibility of the heat on the carrier 3 being transferred to the bracket 8, ensuring that the worker will not be scalded when picking and placing the tooling.

[0040] Referring to Figure 1 and Figure 2 , in the actual use process, two sets of toolings are equipped. When one set is installed on the casting 1, the other set is placed in alcohol for heat dissipation, and the two sets of toolings work alternately.

[0041] Referring to Figure 1 and Figure 2 , an open liquid filling groove 81 is provided at the top of the bracket 8. When the tooling is installed on the casting 1, a small amount of alcohol will be contained in the liquid filling groove 81. In this way, the alcohol in this part can absorb the heat transferred to the bracket 8 during the welding process and evaporate, further reducing the possibility of the worker being scalded when picking and placing the tooling.

[0042] The implementation principle of a back penetration tooling for welding a casting and a profile in an embodiment of the present application is as follows:

[0043] Before welding, the worker holds the bracket 8 and presses the pin 9 into the insertion hole 31. In this way, the pin 9 pulls the corresponding side frame 4 close to the carrier 3 through the wire 10. Then, the whole tooling is installed on the casting 1 and released, and the deformation force of the compression spring 7 pushes the corresponding side frame 4 to abut against the side wall of the casting 1.

[0044] During the welding process, the carrier 3 and the side frame 4 can absorb the heat on the casting 1, so as to quickly dissipate the heat at the welding position of the casting 1 and the profile 2. After welding, the worker removes the tooling from the casting 1 and puts it into alcohol for cooling and heat dissipation.

[0045] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A back penetration tooling for welding a casting and a profile, characterized in that: It includes a carrier frame (3) and a plurality of side frames (4) arranged around the carrier frame (3). The plurality of side frames (4) are all used to prop against the casting (1), and the side frames (4) are slidably engaged with the carrier frame (3).

2. The back penetration tooling for welding of the casting and the profile according to claim 1, characterized in that: A plurality of fixing pins (5) are arranged on the carrier frame (3). Each side frame (4) corresponds to at least one fixing pin (5), and the side frame (4) is slidably sleeved on the corresponding fixing pin (5). An assembly bolt (6) threadedly connected to the side frame (4) slidably passes through the carrier frame (3).

3. The back penetration tooling for welding of the casting and the profile according to claim 2, characterized in that: A compression spring (7) that props between the carrier frame (3) and the side frame (4) is sleeved on the fixing pin (5).

4. The back penetration tooling for welding of the casting and the profile according to claim 1, wherein: A plugging hole (31) is formed on the carrier frame (3), and a bracket (8) is arranged at a position opposite to the plugging hole (31). A pin (9) extending into the plugging hole (31) slidably passes through the bracket (8). The plurality of side frames (4) are pairwise corresponding, and a pull wire (10) is tied between the corresponding two side frames (4). The pull wire (10) bypasses from one end of the pin (9) located in the plugging hole (31).

5. The back penetration tooling for welding of the casting and the profile according to claim 4, characterized in that: A slot for each pull wire (10) to be embedded is formed at one end of the pin (9) located in the plugging hole (31).

6. The back penetration tooling for welding of the casting and the profile according to claim 4, wherein: A heat insulation layer (11) is padded between the bracket (8) and the carrier frame (3), and the pin (9) and the plugging hole (31) are in clearance fit.

7. The back penetration tooling for welding castings and profiles according to claim 4, wherein: A limit ring (12) is fixedly sleeved on the pin (9), and the limit ring (12) props against the inner side wall of the bracket (8).

8. The back penetration tooling for welding a casting and a profile according to claim 4, characterized in that: An open liquid filling groove (81) is formed at the top of the bracket (8).

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