A welding device

Abstract

A welding device belongs to the technical field of welding equipment. The device is characterized in that it comprises a welding pressure head (4) and a workpiece clamp, the welding pressure head (4) is arranged opposite to the workpiece clamp, a hook positioning groove (24) is arranged on the welding pressure head (4), the hook positioning groove (24) is arranged toward the workpiece clamp, a hook fixing part is arranged on one side of the hook positioning groove (24), and the welding pressure head (4) is connected to a power device for pushing it to reciprocate in a direction close to or away from the workpiece clamp. The workpiece clamp of the welding device can position and clamp the column head, the hook positioning groove can position the hook, which facilitates the loading of the hook, and the hook fixing part can fix the hook positioned in the hook positioning groove. The power device pushes the welding pressure head to move and completes the welding between the column head and the hook, thereby realizing automatic welding. The welding quality is not affected by the operator and the welding quality is stable.

Description

Technical Field

[0001] The invention discloses a welding device, belonging to the technical field of welding equipment. Background Art

[0002] When producing a single hydraulic prop, it is necessary to weld a hook on the column head. Due to the convex arc shape of the middle part of the hook, it is difficult to position the hook. The existing automatic welding machine cannot meet the requirements of positioning and welding the hook and the column head. As a result, most of the existing column heads are welded manually, which leads to low welding efficiency between the column head and the hook. The quality of welding is greatly affected by the skill level of the workers and the welding quality is very unstable. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a welding device which can position and fix the hook, thereby automatically welding the column head and the hook.

[0004] The technical solution adopted by the present invention to solve its technical problem is: the welding device is characterized in that it includes a welding pressure head and a workpiece clamp, the welding pressure head is arranged opposite to the workpiece clamp, a hook positioning groove is arranged on the welding pressure head, the hook positioning groove is arranged toward the workpiece clamp, a hook fixing part is arranged on one side of the hook positioning groove, and the welding pressure head is connected to a power device that pushes it to reciprocate in a direction close to or away from the workpiece clamp.

[0005] Preferably, two hook fixing blocks are spaced apart on one side of the welding pressure head facing the workpiece fixture to form the hook positioning groove.

[0006] Preferably, a magnet is provided at the bottom of the hook positioning groove to form a hook fixing portion.

[0007] Preferably, it further comprises a workpiece translation device, the workpiece clamp is mounted on the workpiece translation device, and the moving direction of the workpiece clamp is perpendicular to the moving direction of the welding pressure head.

[0008] Preferably, the workpiece translation device comprises a workpiece propulsion cylinder, which is connected to the workpiece fixture and propels it to translate.

[0009] Preferably, the workpiece clamp comprises a workpiece clamping plate and a clamping cylinder. The workpiece clamping plate comprises two parallel and spaced-apart pieces. The clamping cylinder is connected to the two workpiece clamping plates and pushes them to move synchronously in opposite directions.

[0010] Preferably, a positioning block is provided at one end of each workpiece clamping plate close to the welding pressure head, and an arc-shaped groove with a concave middle portion is provided on one side of the positioning block, and the grooves of the two positioning blocks enclose a circular clamping portion.

[0011] Preferably, the positioning block is made of conductive material.

[0012] Preferably, it also includes a hook feeding device arranged on one side of the welding pressure head.

[0013] Preferably, the hook feeding device includes a hook silo and a pushing device, the hook silo is arranged between the welding pressure head and the pushing device, and a clamping portion for clamping the hook close to the pushing device is provided on one side of the hook silo.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The workpiece fixture of the welding device can position and clamp the column head, the hook positioning groove can position the hook, which is convenient for loading the hook, and the hook fixing part can fix the hook positioned in the hook positioning groove. The power device drives the welding pressure head to move and completes the welding between the column head and the hook, realizing automatic welding. The welding quality is not affected by the operator and the welding quality is stable.

[0016] 2. The two hook fixing blocks are arranged at intervals to form a hook positioning groove, so as to facilitate the adjustment of the width of the hook positioning groove to adapt to the welding of different types of hooks and column heads.

[0017] 3. The hook is fixed by a magnet, which is easy to fix and convenient to remove the hook from the hook positioning slot after welding.

[0018] 4. The workpiece fixture is installed on the workpiece translation device, which makes it convenient to place the unwelded workpiece on the workpiece fixture, take away the welded workpiece, and place the hook in the hook installation groove.

[0019] 5. The movement of the workpiece fixture is realized by the workpiece pushing cylinder, which is convenient for controlling the movement of the workpiece fixture, and the movement of the workpiece fixture is fast, which improves the working efficiency of the entire equipment.

[0020] 6. The clamping cylinder pushes the two workpiece clamps to move synchronously in opposite directions, thereby realizing the clamping positioning and unclamping action of the workpiece, which is easy to control.

[0021] 7. The grooves of the two positioning blocks enclose a circular clamping part, which can ensure both the positioning of the workpiece and the clamping of the workpiece, and ensure accurate hook welding.

[0022] 8. The positioning block is made of conductive material, so that the workpiece can be electrified when it is clamped, thereby realizing the welding of the workpiece and the hook.

[0023] 9. The hook feeding device can deliver the hooks to the welding pressure head one by one, thereby realizing automatic welding of the column head and the hook with a high degree of automation.

[0024] 10. The pushing device pushes the hook into the hook positioning groove to realize automatic loading, and the pressing part always presses the hook on the side of the hook silo close to the pushing device, thereby realizing continuous loading of the hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the front view of the welding device.

[0026] Figure 2 It is a left side schematic diagram of the welding device.

[0027] Figure 3 for Figure 2 The area A in the middle is an enlarged view.

[0028] Figure 4 It is a schematic diagram of the main cross-sectional view of the welding pressure head.

[0029] In the figure: 1, frame 2, welding cylinder 3, lifting frame 4, welding pressure head 5, hook feeding device 6, workpiece 7, workpiece clamping plate 8, workpiece pushing cylinder 9, clamping cylinder 10, positioning block 11, welding frame 12, translation frame 13, feeding cylinder 14, silo translation cylinder 15, silo guide rod 16, silo clamping spring 17, silo pressure plate 18, hook 19, silo baffle 20, feeding piece 21, pressure head body 22, hook fixing block 23, magnet 24, hook positioning groove. DETAILED DESCRIPTION

[0030] Figures 1 to 4 The best embodiment of the present invention is shown below in conjunction with the attached Figures 1 to 4 The present invention is further described.

[0031] A welding device includes a welding ram 4 and a workpiece fixture. The welding ram 4 is arranged opposite to the workpiece fixture. A hook positioning groove 24 is arranged on the welding ram 4. The hook positioning groove 24 is arranged toward the workpiece fixture. A hook fixing part is arranged on one side of the hook positioning groove 24. The welding ram 4 is connected to a power device that pushes it to reciprocate in a direction close to or away from the workpiece fixture. The workpiece fixture of the welding device can position and clamp the column head, the hook positioning groove 24 can position the hook, which facilitates the loading of the hook 18. The hook fixing part can fix the hook 18 positioned in the hook positioning groove 24. The power device pushes the welding ram 4 to move and completes the welding between the column head and the hook 18, realizing automatic welding. The welding quality is not affected by the operator and the welding quality is stable.

[0032] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still belong to the scope of protection of the present application.

[0033] like Figure 1~2 As shown: the welding device also includes a workpiece translation device, a hook feeding device 5 and a frame 1. The power device is installed on the top of the frame 1, and the welding pressure head 4 is installed on the lower side of the power device. The welding pressure head 4 is connected to the power device and rises and falls vertically with the power device. The workpiece fixture is set directly below the welding pressure head 4, and the workpiece fixture is installed on the workpiece translation device. The workpiece translation device drives the workpiece fixture to move horizontally in the direction of approaching or moving away from the welding pressure head 4, and the position of the workpiece 6 is adjusted. In this embodiment, the workpiece 6 is a column head. The column head is cylindrical. The middle part of the hook 18 is an upward convex arc shape, and the hook 18 is formed by bending a round steel bar.

[0034] The power device is a vertically arranged welding cylinder 2, the welding cylinder 2 is vertically arranged, the piston rod of the welding cylinder 2 is arranged downward, a lifting frame 3 is installed on the piston rod of the welding cylinder 2, a welding pressure head 4 is arranged on the lower side of the lifting frame 3, the upper part of the welding pressure head 4 is connected to the lifting frame 3, and rises and falls synchronously with the lifting frame 3.

[0035] The workpiece translation device includes a workpiece push cylinder 8 and a welding frame 11. The frame 1 is provided with a welding frame guide rail, which is arranged horizontally. The welding frame 11 is arranged at the lower side of the welding pressure head 4. The welding frame 11 is slidably mounted on the welding frame guide rail. The workpiece push cylinder 8 is horizontally mounted on the frame 1. The piston rod of the workpiece push cylinder 8 is connected to the welding frame 11 and pushes it to translate. The workpiece fixture is mounted on the upper side of the welding frame 11. The workpiece translation device can push the workpiece fixture to move, so that it is convenient to remove the workpiece 6 from the workpiece fixture and place a new workpiece 6 on the workpiece fixture, and it is also convenient to load the hook 18.

[0036] The workpiece clamp includes a clamping cylinder 9 and a workpiece clamping plate 7. The workpiece clamping plate 7 is vertically arranged. The workpiece clamping plate 7 has two parallel and spaced pieces. The workpiece clamping plate 7 is slidably installed on the welding frame 11. The clamping cylinder 9 is installed on the welding frame 11. The clamping cylinder 9 is connected to the two workpiece clamping plates 7 and pushes the two workpiece clamping plates 7 to move synchronously in opposite directions, thereby achieving the clamping of the workpiece 6 and the centering of the workpiece 6.

[0037] A positioning block 10 is provided at the upper end of each workpiece clamping plate 7, and the positioning block 10 is arranged between the two workpiece clamping plates 7. The positioning block 10 is an arc-shaped groove with a concave middle portion, and the grooves of the two positioning blocks 10 enclose a circular clamping portion, so that the workpiece 6 can be clamped and positioned, and the workpiece 6 is ensured to be aligned with the hook on the welding pressure head 4. The positioning block 10 is supported by a conductive material. In this embodiment, the positioning block 10 is made of copper. The positioning block 10 and the welding pressure head 4 are respectively connected to the two poles of the power supply, so as to realize the welding of the column head and the hook 18.

[0038] like Figure 3 As shown, the hook feeding device 5 includes a hook material bin and a pushing device. The hook material bin is arranged between the welding pressure head 4 and the pushing device. A pressing part for pressing the hook to the side close to the pushing device is arranged on one side of the hook material bin. The pushing device pushes the hook 18 into the hook positioning groove 24 to realize automatic feeding. The pressing part always presses the hook 18 to the side of the hook material bin close to the pushing device, thereby realizing continuous feeding of the hook 18.

[0039] The hook feeding device 5 also includes a silo translation device, which is mounted on the frame 1, and the hook silo is mounted on the silo translation device and moves horizontally with the silo translation device. The silo translation device and the workpiece translation device are arranged perpendicularly to each other. The pushing device is mounted on the silo translation device, and the hook silo is arranged between the welding pressure head 4 and the pushing device. The pushing device is used to push the hooks 18 in the hook silo to the welding pressure head 4 one by one.

[0040] The silo translation device includes a silo translation cylinder 14 and a translation frame 12. A silo translation guide rail is installed on the frame 1. The silo translation guide rail is horizontally arranged. The translation frame 12 is slidably installed on the silo translation guide rail. The silo translation cylinder 14 is installed on the frame 1. The piston rod of the silo translation cylinder 14 is connected to the translation frame 12 and drives it to translate.

[0041] A silo pressure plate 17 and a silo baffle 19 are arranged on the upper side of the translation frame 12. Both the silo baffle 19 and the silo pressure plate 17 are arranged vertically. The silo baffle 19 is arranged on the side of the translation frame 12 close to the welding pressure head 4. The silo pressure plate 17 is slidably arranged on the translation frame 12. The silo pressure plate 17 and the silo baffle 19 are arranged opposite to each other. Baffle rods are arranged on both sides of the silo baffle 19 to form a hook silo. The baffle rod is arranged at an interval with the translation frame 12. Both ends of the hook 18 are arranged on the lower side of the baffle rod, and the baffle rod guides the hook 18. A silo compression spring 16 is arranged on the translation frame 12. The silo compression spring 16 is in a compressed state. One end of the silo compression spring 16 is supported on the translation frame 12, and the other end pushes the silo pressure plate 17 to move in the direction close to the silo baffle 19, so that the hook 18 always compresses the silo baffle 19, which facilitates the continuous feeding of the hook 18.

[0042] A silo guide rod 15 is provided on the side of the silo pressure plate 17 away from the silo baffle 19. One end of the silo guide rod 15 is fixedly connected to the silo pressure plate 17 and moves synchronously with the silo pressure plate 17, and the other end is slidably connected to the translation frame 12. The silo clamping spring 16 is sleeved outside the silo guide rod 15, so as to prevent the silo clamping spring 16 from bending and affecting its pushing the silo pressure plate 17 to move.

[0043] The pushing mechanism includes a loading cylinder 13 and a loading piece 20. The loading cylinder 13 is vertically installed on the translation frame 12. The piston rod of the loading cylinder 13 is set upward. The loading piece 20 is installed on the piston rod of the loading cylinder 13 and rises and falls synchronously with the piston rod. The thickness of the loading piece 20 is equal to or less than the diameter of the steel bar of the hook 18, so that the hooks 18 can be pushed into the hook positioning groove 24 one by one.

[0044] like Figure 4 As shown: the welding pressure head 4 includes a pressure head body 21 and a hook fixing block 22. The lower end of the pressure head body 21 is coaxially provided with a blind hole. The hook fixing block 22 is arranged in the blind hole. The hook fixing block 22 has two parallel and spaced blocks, and a hook positioning groove 24 is formed between the two hook fixing blocks 22. A magnet 23 is arranged in the blind hole on the upper side of the hook fixing block 22 to form a hook fixing part, thereby achieving the fixation of the hook 18. The diameter of the pressure head body 21 is smaller than the inner diameter of the upper end of the column head. Both sides of the blind hole are provided with openings that match the hook positioning groove 24. The two ends of the hook 18 extend through the openings on both sides of the pressure head body 21, thereby facilitating the welding of the hook 18 and the column head.

[0045] The working method of this welding device is as follows: first, place the hook 18 in the hook silo, and the silo clamping spring 16 pushes the silo pressure plate 17 to press the hook 18 against the silo baffle 19, and then the silo translation cylinder 14 pushes the translation frame 12 to move, and makes the loading piece 20 located directly below the hook positioning groove 24. At this time, the hook loading cylinder 13 moves upward, and pushes the hook 18 on the side of the silo pressure plate 17 upward through the loading piece 20, and makes it enter the hook positioning groove 24, completing the loading of the hook 18. At this time, the hook loading cylinder 13 is reset, and the silo clamping spring 16 pushes the hook 18 to be pressed against the silo baffle 19 again through the silo pressure plate 17, and the silo translation cylinder 14 is reset.

[0046] Place the workpiece 6 on the welding frame 11, and the clamping cylinder 9 pushes the two workpiece clamps 7 to move inward synchronously to position and clamp the workpiece 6. Then the workpiece pushing cylinder 8 pushes the welding frame 11 to move to the lower side of the welding pressure head 4, and aligns the hook 18 on the welding pressure head 4 with the workpiece 6 on the welding frame 11.

[0047] The welding cylinder 2 pushes the welding pressure head 4 to move downward and makes the hook 18 contact with the workpiece 6. After welding is completed, the welding cylinder 2 drives the welding pressure head 4 to move upward, and the hook 18 is separated from the suction of the magnet 23, completing the welding of the workpiece 6 and the hook 18.

[0048] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A welding device, characterized in that: The welding pressure head (4) comprises a welding pressure head (4) and a workpiece clamp, wherein the welding pressure head (4) is arranged opposite to the workpiece clamp, a hook positioning groove (24) is arranged on the welding pressure head (4), the hook positioning groove (24) is arranged toward the workpiece clamp, a hook fixing portion is arranged on one side of the hook positioning groove (24), and the welding pressure head (4) is connected to a power device for driving it to reciprocate in a direction close to or away from the workpiece clamp; It also includes a workpiece translation device, on which a workpiece clamp is mounted, and a moving direction of the workpiece clamp is arranged perpendicular to a moving direction of the welding pressure head (4); It also includes a hook feeding device (5) arranged on one side of the welding pressure head (4); The workpiece clamp comprises a workpiece clamping plate (7) and a clamping cylinder (9), wherein the workpiece clamping plate (7) comprises two parallel and spaced-apart pieces, and the clamping cylinder (9) is connected to the two workpiece clamping plates (7) and drives them to move synchronously in opposite directions; Each of the workpiece clamping plates (7) is provided with a positioning block (10) at one end close to the welding pressure head (4), and a centrally concave arc-shaped groove is provided on one side of the positioning block (10), and the grooves of the two positioning blocks (10) are combined to form a circular clamping portion; The positioning block (10) is made of conductive material.

2. The welding device according to claim 1, characterized in that: Two hook fixing blocks (22) are arranged at intervals on one side of the welding pressure head (4) facing the workpiece fixture, forming the hook positioning groove (24).

3. The welding device according to claim 1 or 2, characterized in that: A magnet is provided at the bottom of the hook positioning groove (24) to form a hook fixing portion.

4. The welding device according to claim 1, characterized in that: The workpiece translation device comprises a workpiece propulsion cylinder (8), which is connected to the workpiece fixture and propels the workpiece fixture to translate.

5. The welding device according to claim 1, characterized in that: The hook feeding device (5) comprises a hook material bin and a pushing device. The hook material bin is arranged between the welding pressure head (4) and the pushing device. A pressing portion for pressing the hook to a side close to the pushing device is arranged on one side of the hook material bin.

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