A portable tool box upper cover welding device

Abstract

The utility model provides a portable tool box upper cover welding set, is used for welding the cover plate and the side plate of carding in the left and right sides of cover plate, it includes lower electrode, the upper electrode of upper and lower movement ground setting in the upper of lower electrode, through setting the protruding for carding in the connecting portion of cover plate and side plate, make protruding stamping in cover plate and / or side plate, make the upper surface of lower electrode and the inner wall shape matching of connecting portion, set in the lower electrode with connecting portion, make the lower surface of upper electrode and the outer wall shape matching of connecting portion, when upper electrode moves down and compacts connecting portion, can make upper electrode, lower electrode arc at protruding, realize the welding of cover plate and side plate, through protruding carding positioning, positioning efficiency is high, utilizes upper electrode, lower electrode arc welding at multiple protruding simultaneously, can weld multiple welding points once, and the consistency of multiple welding points is good, and the work load is small.

Description

Technical Field

[0001] This utility model relates to the field of thin plate welding technology, specifically to a welding device for the top cover of a portable toolbox. Background Technology

[0002] The top cover of the portable toolbox is welded together from a central cover plate and side plates on the left and right sides. Since the cover plate and side plates have curved sections on the front and back, welding requires hand positioning and spot welding with a welding gun. To improve the connection strength, there are many weld points on the left and right sides, resulting in a large workload for manual welding. Furthermore, the hand positioning method is inefficient and the weld points are not very consistent. Utility Model Content

[0003] The purpose of this invention is to solve one or more problems in the prior art and to provide a welding device for the top cover of a portable toolbox.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is a welding device for the top cover of a portable toolbox, used for welding a cover plate and side plates that are snapped onto the left and right sides of the cover plate. The connecting part of the cover plate and the side plates is provided with protrusions for snapping. The protrusions are pressed onto the cover plate and / or the side plates. The welding device for the top cover of the portable toolbox includes a lower electrode and an upper electrode that is movably disposed above the lower electrode. The upper surface of the lower electrode matches the shape of the inner wall of the connecting part. The connecting part is sleeved on the lower electrode. The lower surface of the upper electrode matches the shape of the outer wall of the connecting part. When the upper electrode moves downward to press the connecting part, the upper electrode and the lower electrode form an arc at the protrusion to achieve welding.

[0005] Preferably, there are multiple protrusions that are spaced apart along the extension direction of the connecting portion, and all the protrusions have the same protrusion height.

[0006] Preferably, the lower electrode includes a middle electrode and side electrodes symmetrically distributed on the front and rear sides of the middle electrode. The middle electrode is movable up and down, and the side electrodes are attached to both sides of the middle electrode and can slide back and forth.

[0007] More preferably, the intermediate electrode has an upper working position and a lower working position. When the intermediate electrode is in the upper working position, the upper surface of the intermediate electrode is higher than the upper surface of the side electrode. When the intermediate electrode is in the lower working position, the upper surface of the intermediate electrode and the upper surface of the side electrode form a plane.

[0008] More preferably, the intermediate electrode changes between an upper working position and a lower working position by moving up and down. The contact surface between the side electrode and the intermediate electrode is an inclined surface. An elastic element is provided on the side of the side electrode away from the intermediate electrode. When the intermediate electrode moves downward, the inclined surface pushes the side electrode away from each other. When the intermediate electrode moves upward, the elastic element drives the side electrode to reset.

[0009] More preferably, the intermediate electrode includes an intermediate support block and an intermediate electrode body detachably connected to the upper part of the intermediate support block, and the side electrode includes a side support block and a side electrode body detachably connected to the upper part of the side support block.

[0010] More preferably, a base is provided below the intermediate support block and the side support block. The base includes a support strip and a side stop. The upper end of the support strip is provided with a groove extending in the front-back direction. The side stop is provided at both ends of the support strip and blocks the groove. The intermediate support block is movably disposed above the middle of the groove. The side support block is slidably disposed in the groove.

[0011] More preferably, the middle of the slide groove is provided with a first blind hole extending vertically downward, the bottom wall of the first blind hole is provided with a first bolt for locking the intermediate support block, the first blind hole is provided with a first spring sleeved on the first bolt, and the two ends of the first spring respectively abut against the bottom wall of the first blind hole and the lower surface of the intermediate support block.

[0012] More preferably, the elastic element includes a second spring and an abutment block disposed between the side support block and the side stop block. The side stop block has a second blind hole extending horizontally outward on its surface facing the side support block. A second bolt for locking the abutment block passes through the bottom wall of the second blind hole. The second spring is accommodated in the second blind hole and sleeved on the second bolt. The two ends of the second spring abut against the bottom wall of the second blind hole and the end face of the abutment block facing the side stop block, respectively.

[0013] More preferably, the base further includes a bottom plate disposed below the support bar and the side stop, and the support bar and the side stop are both locked to the bottom plate.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0015] This utility model provides a welding device for the top cover of a portable toolbox, used for welding a cover plate and side plates snapped onto the left and right sides of the cover plate. It includes a lower electrode and an upper electrode movably positioned above the lower electrode. By providing protrusions for snapping at the connection between the cover plate and the side plates, the protrusions press against the cover plate and / or side plates, matching the shape of the upper surface of the lower electrode with the inner wall of the connection. The connection is then fitted onto the lower electrode, matching the shape of the lower surface of the upper electrode with the outer wall of the connection. When the upper electrode moves downward to press the connection, the upper and lower electrodes can initiate an arc at the protrusions, achieving welding between the cover plate and the side plates. The protrusions provide high positioning efficiency, and by simultaneously initiating arc welding at multiple protrusions using the upper and lower electrodes, multiple consistent weld points can be produced in one operation, reducing workload. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of a preferred embodiment of the present invention.

[0017] Figure 2 yes Figure 1 A three-dimensional schematic diagram.

[0018] Figure 3 yes Figure 2 A magnified view of a portion of the lower electrode.

[0019] Figure 4 yes Figure 3 A top-down view.

[0020] Figure 5 yes Figure 4 Cross-sectional view along the AA direction.

[0021] Figure 6 yes Figure 2 An exploded view of the assembly of the middle cover plate and the side plate.

[0022] Wherein: 1. Cover plate; 2. Side plate; 3. Protrusion; 10. Lower electrode; 11. Middle electrode; 111. Middle support block; 112. Middle electrode body; 12. Side electrode; 121. Side support block; 122. Side electrode body; 13. Inclined surface; 141. Second spring; 142. Abutment block; 20. Upper electrode; 30. Base; 31. Support strip; 311. Slide groove; 312. First blind hole; 313. First bolt; 314. First spring; 32. Side stop block; 321. Second blind hole; 322. Second bolt. Detailed Implementation

[0023] like Figures 1 to 6As shown, the toolbox lid welding device provided by this utility model is used to weld a cover plate 1 and side plates 2 that are snapped onto the left and right sides of the cover plate 1. The connecting part of the cover plate 1 and the side plates 2 is provided with protrusions 3 for snapping. There are multiple protrusions 3, which are spaced apart along the extension direction of the connecting part. The protrusions 3 are stamped on the cover plate 1 and protrude outward. All the protrusion heights of the protrusions 3 are equal. When snapping, these protrusions 3 abut against the inner wall of the side plates 2, so that the side plates 2 are firmly held on the cover plate 1, realizing the snapping positioning. The toolbox lid welding device includes a lower electrode 10, which is movably arranged on the lower electrode 1. The upper electrode 20 and the lower electrode 10 above the 0 have their upper surfaces matched with the inner wall shape of the connecting part. The connecting part is sleeved on the lower electrode 10, and the lower surface of the upper electrode 20 matches the outer wall shape of the connecting part. When the upper electrode 20 moves downward to press the connecting part, the upper electrode 20 and the lower electrode 10 start an arc at the protrusion 3 to achieve welding. This can not only improve the positioning efficiency and avoid displacement by using the protrusion 3 for positioning, but also use the upper electrode 20 and the lower electrode 10 to start an arc at multiple protrusions 3 at the same time to weld multiple consistent weld points at one time, reducing the amount of spot welding work. It is especially suitable for thin plate welding.

[0024] To facilitate the fitting and locking of the connecting part onto the lower electrode 10, thereby ensuring the welding effect, in this embodiment, the lower electrode 10 is a split design. Specifically, the lower electrode 10 includes a middle electrode 11 and side electrodes 12 symmetrically distributed on the front and rear sides of the middle electrode 11. The middle electrode 11 is movably positioned vertically and has an upper working position and a lower working position. When the middle electrode 11 is in the upper working position, the upper surface of the middle electrode 11 is higher than the upper surface of the side electrodes 12. When the middle electrode 11 is in the lower working position, the upper surface of the middle electrode 11 and the upper surface of the side electrodes 12 form a plane, together constituting the upper surface of the lower electrode 10. The middle electrode 11 is connected by the upper... The downward movement changes between the upper working position and the lower working position; the side electrode 12 is slidably arranged back and forth, and the side electrode 12 is attached to both sides of the middle electrode 11. The contact surface between the side electrode 12 and the middle electrode 11 is an inclined surface 13. An elastic element is provided on the side of the side electrode 12 away from the middle electrode 11. When the middle electrode 11 moves downward, the inclined surface 13 pushes the side electrodes 12 away from each other, so that the upper surface of the middle electrode 11 can be embedded between the upper surfaces of the two side electrodes 12 and form a plane, so that the connecting part can be locked on the lower electrode 10. When the middle electrode 11 moves upward, the elastic element drives the side electrode 12 to reset, so that the two side electrodes 12 move closer to each other, so that the connecting part can be fitted.

[0025] In this embodiment, the intermediate electrode 11 includes an intermediate support block 111 and an intermediate electrode body 112 detachably connected to the upper part of the intermediate support block 11. The side electrode 12 includes a side support block 121 and a side electrode body 122 detachably connected to the upper part of the side support block 121. The welding device for the top cover of the portable toolbox also includes a base 30, which is disposed below the intermediate support block 111 and the side support block 121. The base 30 includes a support strip 31 and a side stop 32. The upper end of the support strip 31 is provided with a groove 3 extending in the front-back direction. 11. Side blocks 32 are located at both ends of the support strip 31 and block the slide groove 311. The middle support block 111 is movably positioned above the middle of the slide groove 311. The side support block 121 is slidably positioned within the slide groove 311. To enable the middle electrode 10 to move up and down and the side electrode 12 to slide back and forth and reset, the middle of the slide groove 311 is further provided with a first blind hole 312 extending vertically downward. A first bolt 313 for locking the middle support block 111 passes through the bottom wall of the first blind hole 312. A sleeve is provided inside the first blind hole 312. A first spring 314 is provided on the first bolt 313. The two ends of the first spring 314 abut against the bottom wall of the first blind hole 312 and the lower surface of the intermediate support block 111, respectively. The first spring 314 has a tendency to drive the intermediate support block 111 to move upward. After the welding is completed and the cover of the toolbox fitted on the lower electrode 10 is removed, the intermediate support block 111 moves upward spontaneously under the action of the first spring 314, so that the intermediate electrode 11 changes to the upper working position. The elastic element includes a first spring 314 provided between the side support block 121 and the side stop block 32. Two springs 141 and abutment block 142. The side stop block 32 has a second blind hole 321 extending horizontally outward on the surface facing the side support block 121. The bottom wall of the second blind hole 321 is provided with a second bolt 322 for locking the abutment block 142. The second spring 141 is accommodated in the second blind hole 321 and sleeved on the second bolt 322. The two ends of the second spring 141 abut against the bottom wall of the second blind hole 321 and the end face of the abutment block 142 facing the side stop block 32, respectively. The second spring 141 has a tendency to drive the abutment block 142 to abut against the side stop block 32.

[0026] To further enhance stability, the base 30 also includes a base plate 33 located below the support strip 31 and the side stop 32, with the support strip 31 and the side stop 32 both bolted to the base plate 33.

[0027] To enhance safety, the intermediate support block 111 and the side support block 121 can be made of insulating materials such as plastic steel. The detachable design allows for easy disassembly and replacement using bolt locking or other methods after the intermediate electrode body 112 or the side electrode body 122 is damaged.

[0028] During welding, the protrusion 3's snap-fit ​​design prevents misalignment between the side plate 2 and the cover plate 1. Combined with the welding plane formed by the upper surface of the middle electrode 11 being embedded between the upper surfaces of the two side electrodes 12, and the upper electrode 20 pressing and igniting the arc, the welding pressure can be precisely controlled by a force sensor, thereby improving the welding effect, ensuring that the number and consistency of weld points meet the requirements, and also preventing damage to the surface of the cover plate 1 and / or side plate 2 during welding, thus improving the aesthetic appearance.

[0029] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A welding device for the top cover of a portable toolbox, used for welding a cover plate and side plates snapped onto the left and right sides of the cover plate, comprising a lower electrode and an upper electrode movably disposed above the lower electrode, characterized in that: The connecting part of the cover plate and the side plate is provided with a protrusion for snapping. The protrusion is stamped on the cover plate and / or the side plate. The upper surface of the lower electrode matches the inner wall shape of the connecting part. The connecting part is sleeved on the lower electrode. The lower surface of the upper electrode matches the outer wall shape of the connecting part. When the upper electrode moves downward to press the connecting part, the upper electrode and the lower electrode ignite an arc at the protrusion to achieve welding.

2. The welding device for the top cover of the portable toolbox according to claim 1, characterized in that: The protrusions are multiple and spaced apart along the extension direction of the connecting portion, and all the protrusions have the same protrusion height.

3. The welding device for the top cover of the portable toolbox according to claim 1, characterized in that: The lower electrode includes a middle electrode and side electrodes symmetrically distributed on the front and rear sides of the middle electrode. The middle electrode is movable up and down, and the side electrodes are attached to both sides of the middle electrode and can slide back and forth.

4. The welding device for the top cover of the portable toolbox according to claim 3, characterized in that: The intermediate electrode has an upper working position and a lower working position. When the intermediate electrode is in the upper working position, the upper surface of the intermediate electrode is higher than the upper surface of the side electrode. When the intermediate electrode is in the lower working position, the upper surface of the intermediate electrode and the upper surface of the side electrode form a plane.

5. The welding device for the top cover of the portable toolbox according to claim 4, characterized in that: The intermediate electrode moves up and down between the upper working position and the lower working position. The contact surface between the side electrode and the intermediate electrode is an inclined surface. An elastic element is provided on the side of the side electrode away from the intermediate electrode. When the intermediate electrode moves downward, the inclined surface pushes the side electrode away from each other. When the intermediate electrode moves upward, the elastic element drives the side electrode to reset.

6. The welding device for the top cover of the portable toolbox according to claim 5, characterized in that: The intermediate electrode includes an intermediate support block and an intermediate electrode body detachably connected to the upper part of the intermediate support block, and the side electrode includes a side support block and a side electrode body detachably connected to the upper part of the side support block.

7. The welding device for the top cover of the portable toolbox according to claim 6, characterized in that: A base is provided below the intermediate support block and the side support block. The base includes a support strip and a side block. The upper end of the support strip is provided with a sliding groove extending in the front-back direction. The side block is provided at both ends of the support strip and blocks the sliding groove. The intermediate support block is movably disposed above the middle of the sliding groove. The side support block is slidably disposed in the sliding groove.

8. The welding device for the top cover of the portable toolbox according to claim 7, characterized in that: The groove has a first blind hole extending vertically downward in the middle. A first bolt for locking the intermediate support block passes through the bottom wall of the first blind hole. A first spring is sleeved on the first bolt inside the first blind hole. The two ends of the first spring abut against the bottom wall of the first blind hole and the lower surface of the intermediate support block, respectively.

9. The welding device for the top cover of the portable toolbox according to claim 7, characterized in that: The elastic element includes a second spring and an abutment block disposed between the side support block and the side stop block. The side stop block has a second blind hole extending horizontally outward on its surface facing the side support block. A second bolt for locking the abutment block passes through the bottom wall of the second blind hole. The second spring is accommodated in the second blind hole and sleeved on the second bolt. The two ends of the second spring abut against the bottom wall of the second blind hole and the end face of the abutment block facing the side stop block, respectively.

10. The welding device for the top cover of the portable toolbox according to claim 7, characterized in that: The base also includes a base plate located below the support bar and the side stop, and the support bar and the side stop are locked to the base plate.

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