Welding torch puller

Abstract

This invention discloses a welding torch puller, comprising: a base; a puller bracket mounted on the base; a puller rod, liftably mounted on the puller bracket, with a connector at one end of the puller rod facing the base, and a welding head at the end of the connector; a lifting device, which is a lever-type structure, mounted on the puller bracket and connected to the puller rod, the lifting device causing the puller rod to rise; a locking plate, one end of which is hinged to the lifting device or the puller bracket, the locking plate having a locking hole through which the puller rod passes, the locking plate being inclined to form an angle with the puller rod, the locking hole securing the puller rod; and a hook-pull device, detachably fitted onto the outside of the connector, which, when disassembled, is installed between the base and the locking plate, making the locking plate horizontal. This invention has a simple structure, is easy to use, effectively assists production, reduces labor intensity, and lowers production costs.

Description

Technical Field

[0001] This invention relates to the field of automotive sheet metal repair technology, and in particular to a welding torch puller. Background Technology

[0002] When repairing the sheet metal of a car damaged in a collision, appropriate tools are generally required, and a puller is one of the commonly used tools for this purpose. The process of using a puller is as follows: after fixing the pull pin to the dented area of ​​the sheet metal using spot welding or other methods, the puller hooks the pull pin and pulls it upwards using the lifting device on the puller, thus restoring the dented area to its original position. Most existing pullers use a worm gear system to drive the puller rod upwards. Its advantages include easy control of the lifting height, and the puller rod automatically locking its position after rising via threads to prevent slippage. However, both raising and lowering the puller rod require turning the handle many times, which is very inconvenient. Furthermore, to keep the puller rod vertically upwards, a strip-shaped plane needs to be machined on the puller rod for limiting, increasing the machining difficulty and cost. Also, the puller rod is still subjected to a rotational force during lifting, which can, in severe cases, unscrew the pull pin. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a welding torch puller, which has a simple structure, is easy to operate, and has high pulling accuracy.

[0004] According to an embodiment of the present invention, a welding torch puller is provided, comprising: a base; a puller bracket mounted on the base; a puller rod liftably mounted on the puller bracket, wherein a connector is provided at one end of the puller rod facing the base, and a welding head is provided at the end of the connector; a lifting device, the lifting device being a lever-type structure, the lifting device being mounted on the puller bracket and connected to the puller rod, the lifting device driving the puller rod to rise; a locking plate, one end of the locking plate being hinged to the lifting device or the puller bracket, the locking plate having a locking hole, the puller rod passing through the locking hole, the locking plate being inclined to form an angle with the puller rod, the locking hole locking the puller rod; and a hook pulling device detachably fitted on the outside of the connector, wherein when the hook pulling device is disassembled, the hook pulling device is installed between the base and the locking plate, so that the locking plate is horizontally positioned.

[0005] The welding torch puller according to embodiments of the present invention has at least the following beneficial effects: When the welding torch puller pulls up a recessed area of ​​sheet metal, a pull pin can be spot-welded onto the recessed area. The hook-pulling device works in conjunction with the pull pin, and the lifting device moves the pull rod upwards, thereby repairing the sheet metal. Alternatively, the hook-pulling device can be disassembled and used to abut a locking plate, making the locking plate horizontal and releasing the locking of the pull rod. Then, the welding head is directly spot-welded onto the recessed area of ​​the sheet metal, and the lifting device moves the pull rod upwards, thereby repairing the sheet metal. The embodiments of the present invention have a simple structure and two functions: repairing sheet metal by hooking and pulling pull pins, and repairing sheet metal by directly applying the welding head to the sheet metal. They are convenient to use, effectively assist production, reduce labor intensity, and lower production costs.

[0006] According to an embodiment of the present invention, the welding torch puller has a base frame with two support columns, the tops of the two support columns are connected by a crossbar, and the puller bracket is mounted on the crossbar.

[0007] According to an embodiment of the present invention, the top of the support column of the welding torch puller is provided with an adjustment device for locking the crossbar.

[0008] According to an embodiment of the present invention, the welding torch puller has elongated holes at both ends of the crossbar, and the adjusting device passes through the elongated holes and is fixedly connected to the top of the support column.

[0009] According to an embodiment of the present invention, the bottom of the base frame of the welding torch puller is provided with a fixed seat.

[0010] According to an embodiment of the present invention, the lifting device includes a support portion fixedly connected to the pulling bracket, and a lifting portion hinged to the support portion to form a lever. One end of the lifting portion is located inside the pulling bracket and connected to the pulling rod, and the other end of the lifting portion is disposed outside the pulling bracket and cooperates with the extended portion of the support portion to form a handle.

[0011] According to an embodiment of the present invention, a return spring is provided between one end of the lifting part and the pulling bracket.

[0012] According to an embodiment of the present invention, when the locking plate is connected to the lifting device, a pressure spring is provided between the locking plate and the lifting device.

[0013] According to an embodiment of the present invention, when the locking plate is connected to the puller bracket, a pressure spring is provided between the locking plate and the puller bracket.

[0014] According to an embodiment of the present invention, the welding torch puller has a pull hook or a pull ring.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of the welding torch puller equipped with a hook pulling device according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Another structural diagram;

[0019] Figure 3 This is a schematic diagram of the disassembly hook pulling device of the welding torch puller according to an embodiment of the present invention;

[0020] Figure 4 This is a top view of the locking piece in the welding torch puller according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] Support column 110; crossbar 120; locking bolt 130; fixing seat 140; pull bracket 150; pull rod 160; connector 170; welding head 180; support part 190; lifting part 200; return spring 210; locking piece 220;

[0023] Hook and pull device 310;

[0024] Connecting groove 410; locking hole 420. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0027] In the description of the invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If the terms "first" and "second" are used, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0029] The following reference Figures 1 to 4 A welding torch puller according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the invention.

[0030] Reference Figures 1 to 3 The present invention provides a welding torch puller, including a base, a puller bracket 150 disposed on the base, a puller rod 160 disposed on the puller bracket 150, a lifting device disposed on the puller bracket 150 and connected to the puller rod 160, a locking piece 220 for clamping the puller rod 160, and a hook pulling device 310 detachably fitted outside the connector 170.

[0031] In this embodiment, the support frame is provided with two support columns 110, and the tops of the two support columns 110 are connected by a crossbar 120 to form a sturdy inverted U-shaped support frame. It is understood that the top of the support column 110 is provided with an adjustment device for locking the crossbar, and both ends of the crossbar 120 are provided with elongated holes. The adjustment device passes through the elongated holes and is fixedly connected to the top of the support column 110. The adjustment device uses locking bolts 130 for easy adjustment. By providing elongated holes, the distance between the two support columns 110 can be adjusted, thereby accommodating sheet metal with dents of different sizes for pull-out repair. Alternatively, it is easy to understand that a through hole can be provided at the top of the support column 110, and a slot can be provided on the crossbar 120. The crossbar 120 passes through the through hole to connect the two support columns 110, and the support column 110 and the crossbar 120 are fixedly connected by the locking bolts 130 cooperating with the slot.

[0032] It should be noted that the seat frame can also be configured as an L-shaped structure. Those skilled in the art can make reasonable choices based on the actual situation, and the present invention does not impose any restrictions on this.

[0033] Reference Figures 1 to 3The base of the frame has a fixed seat 140, which secures the welding torch puller to the automotive sheet metal, while also increasing the contact area and improving pulling accuracy. Specifically, the fixed seat 140 is hinged to the frame, allowing for multi-angle adjustment to suit different environments. It is conceivable that the fixed seat 140 is a fixing plate, bolted to the automotive sheet metal. It should be noted that the fixed seat 140 can also be a suction cup mount; a suction cup allows for direct adhesion to the automotive sheet metal, resulting in a more stable connection and easier operation. Those skilled in the art can choose the appropriate fixed seat 140 based on the specific circumstances; this invention does not impose any limitations on its selection.

[0034] Reference Figure 3 The pull-out bracket 150 is fixedly installed on the crossbar 120. The pull-out rod 160 is elliptical and can be mounted on the pull-out bracket 150. A connector 170 is provided at the end of the pull-out rod 160 facing the base, and a welding head 180 is provided at the end of the connector 170.

[0035] Reference Figures 1 to 3 The lifting device is a lever-type handle. It includes a support portion 190 fixedly connected to a pull-out bracket 150, and a lifting portion 200 hinged to the support portion 190 to form a lever. One end of the lifting portion 200 is located inside the pull-out bracket 150 and connected to a pull-out rod 160. It is understood that a lifting hole can be provided on the lifting portion 200, through which the pull-out rod 160 passes to achieve connection. The other end of the lifting portion 200 is located outside the pull-out bracket 150 and cooperates with the extended portion of the support portion 190 to form a handle. When the handle is gripped, the horizontal projected area of ​​the lifting hole decreases, locking and driving the pull-out rod 160 upward. The lever design not only saves the force applied during pulling but also allows for convenient control of the pulling force, preventing excessive force from damaging the sheet metal.

[0036] It is easy to understand that a return spring 210 is provided between the lifting part 200 and the puller bracket 150 at one end. When the operating handle is released, the lifting part 200 moves downward under the action of the return spring 210, and the operating handle returns to its original position. By providing the return spring 210, the welding torch puller can automatically reset, making operation simple. It should be noted that a cam reset can also be used. The cam is rotatably connected to the pull rod bracket, and the lifting part 200 is fixedly connected to the cam. When the operating handle is gripped, the lifting part 200 moves upward with the cam; when the operating handle is released, the lifting part 200 and the cam return to their original position under the action of gravity. However, compared with the return spring 210, using a cam for reset will increase the weight of the welding torch puller and increase production costs.

[0037] The locking piece 220 is located below the lifting device. (See reference...) Figure 4One end of the locking piece 220 is provided with a connecting groove 410, and the locking piece 220 is hinged to the connecting rod located at the bottom of the support part 190 through the connecting groove 410. The other end of the locking piece 220 is a free end. A pressure spring is provided between the locking piece 220 and the lifting device. A locking hole 420 is provided on the locking piece 220, and the pulling rod 160 passes through the locking hole 420. The locking piece 220 is inclined to form an angle with the pulling rod 160, and the locking hole 420 locks the pulling rod 160. Since one end of the locking piece 220 is hinged to the bottom of the lifting device, and a pressure spring is provided between the locking piece 220 and the lifting device, the other end of the locking piece 220 moves away from the lifting device under the action of the pressure spring, causing the locking piece 220 to tilt. The projected area of ​​the locking hole 420 on the horizontal plane is reduced, and the locking hole 420 locks the pulling rod 160. The higher the pulling rod 160 rises, the tighter the locking hole 420 locks. Moving the locking piece 220 horizontally will release the pull rod 160, which will automatically slide down and reset, making it convenient and quick.

[0038] The locking plate 220 can also be mounted on the pull-out bracket 150. In addition to the pressure spring, the locking plate 220 can be tilted by its own weight, or a counterweight can be added to the free end of the locking plate 220 to tilt it.

[0039] Reference Figures 1 to 3 The hook-and-pull device 310 is detachably mounted on the outside of the connector 170. Specifically, when the hook-and-pull device 310 is mounted on the outside of the connector 170, a pull pin is spot-welded to the recessed area of ​​the sheet metal. The hook-and-pull device 310 works in conjunction with the pull pin, and the lifting device then raises the pull rod 160, thereby lifting the pull pin and repairing the sheet metal. When the hook-and-pull device 310 is detached from the connector 170 and placed between the crossbar 120 and the locking piece 220 of the frame, the locking piece 220 is raised to a horizontal position. The locking piece 220 no longer locks the pull rod, and the welding head 180 is directly spot-welded to the recessed area of ​​the sheet metal. The lifting device then raises the pull rod 160, repairing the sheet metal. It is understood that the hook-and-pull device 310 can be a pull hook or a pull ring, facilitating its use with the pull pin.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A welding torch puller, characterized in that, include: Frame; A pull-out bracket is mounted on the base frame; A pull rod is vertically mounted on the pull bracket. A connector is provided at one end of the pull rod facing the base, and a welding head is provided at the end of the connector. A lifting device, which is a lever-type structure, is mounted on the pull-out bracket and connected to the pull-out rod. The lifting device's movement causes the pull-out rod to rise. A locking plate, one end of which is hinged to the lifting device or the pulling bracket, has a locking hole on it, through which the pulling rod passes, and is inclined to form an angle with the pulling rod, with the locking hole locking the pulling rod. A hook-and-pull device is detachably fitted onto the outside of the connector; the base frame is provided with two support columns, the tops of the two support columns are connected by a crossbar, the pull-out bracket is installed on the crossbar, and a fixed seat is provided at the bottom of the base frame; when the hook-and-pull device is fitted onto the outside of the connector, it cooperates with the pull-out pin at the sheet metal recess to repair the sheet metal; when the hook-and-pull device is detached from the connector, it is installed between the crossbar and the locking piece of the base frame, so that the locking piece is horizontally positioned, and is directly spot-welded to the sheet metal recess by the welding head to repair the sheet metal.

2. The welding torch puller according to claim 1, characterized in that, The top of the support column is equipped with an adjustment device for locking the crossbar.

3. The welding torch puller according to claim 2, characterized in that, The crossbar has elongated holes at both ends, and the adjustment device passes through the elongated holes and is fixedly connected to the top of the support column.

4. The welding torch puller according to claim 1, characterized in that, The lifting device includes a support portion fixedly connected to the pull bracket, and a lifting portion hinged to the support portion to form a lever. One end of the lifting portion is located inside the pull bracket and connected to the pull rod, and the other end of the lifting portion is disposed outside the pull bracket and cooperates with the extended portion of the support portion to form a handle.

5. The welding torch puller according to claim 4, characterized in that, A return spring is provided between one end of the lifting part and the pulling bracket.

6. The welding torch puller according to claim 1, characterized in that, When the locking plate is connected to the lifting device, a pressure spring is provided between the locking plate and the lifting device.

7. The welding torch puller according to claim 1, characterized in that, When the locking piece is connected to the pull-out bracket, a pressure spring is provided between the locking piece and the pull-out bracket.

8. The welding torch puller according to claim 1, characterized in that, The hook and pull device is a pull hook or a pull ring.

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