Plate welding equipment for plastic mold machining

Abstract

The utility model discloses plate welding equipment for processing a plastic mold, which is characterized by comprising a first worktable for placing a main plate, a first lifting component for driving the first worktable to ascend / descend, and a moving component for driving the first worktable to laterally translate, the first pushing block is arranged on one side of the main plate, and the first pushing assembly drives the first pushing block to move transversely. According to the utility model, through accurate control of the first pushing assembly, it is ensured that the main board can be accurately pushed to a preset position. And the problems of welding surface dislocation and welding area reduction are avoided. And through the fixing effect of the positioning strips, it is ensured that the positions of the plates are kept unchanged in the welding process, and therefore the welding strength is improved. The steps of manual operation are reduced, the production efficiency is improved, and the production delay and the rejection rate caused by improper manual operation are reduced.

Description

Technical Field

[0001] This utility model relates to a sheet metal welding device for plastic mold processing, belonging to the technical field of welding equipment. Background Technology

[0002] Plastic mold processing sheet metal welding equipment is a machine specifically designed for welding plastic sheets. It is widely used in the manufacture of various plastic products, such as plastic boxes, plastic pallets, and instrument panels. This type of equipment uses specific techniques (such as ultrasonic welding, hot plate welding, and laser welding) to join plastic sheets together to form the desired shape and structure.

[0003] Since welding accuracy is closely related to material feeding accuracy, manufacturing or installation errors in the positioning devices of the feeding system, such as clamps and positioning pins, can lead to inaccurate positioning of the sheet metal during welding. Furthermore, if the feeding system has a low level of automation, manual or semi-automatic operation is easily affected by operator experience and fatigue, further exacerbating inconsistencies in the feeding position. When the sheet metal being welded experiences movement errors, not only does the welding accuracy decrease, but the misalignment of the weld surfaces also reduces the weld area, further affecting the weld strength.

[0004] Poor material loading precision can lead to inaccurate plate positioning during welding, affecting welding parameter settings and welding results. Low weld strength directly impacts weld quality, causing the weld joint to fail to meet requirements for precision and strength.

[0005] Therefore, the purpose of this study is to design a sheet metal welding equipment for plastic mold processing that can improve feeding accuracy, ensure welding precision, and increase welding strength. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sheet metal welding equipment for plastic mold processing, so as to solve the problems of the existing technology.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A sheet metal welding device for plastic mold processing, characterized in that it comprises:

[0009] A first worktable for placing the main sheet material, a first lifting assembly for driving the first worktable to rise / fall, and a moving assembly for driving the first worktable to move laterally.

[0010] A first push block is disposed on one side of the main plate, and a first push component is provided to drive the first push block to move laterally;

[0011] A fixed platform is provided on one side of the first workbench. A through hole is provided on the side of the fixed platform. A protrusion is provided below the inside of the through hole. A groove corresponding to the protrusion is provided below the first workbench.

[0012] A second workbench for placing the sub-plate, a positioning bar located diagonally above the sub-plate, and a second lifting assembly for driving the positioning bar to rise / fall;

[0013] A welding assembly is disposed between the first workbench and the second workbench. The welding assembly includes a welding rod, a heating assembly for controlling the heating of the welding rod, and a third lifting assembly disposed below the welding rod, wherein the third lifting assembly controls the welding rod to rise / fall.

[0014] The control module is electrically connected to the first lifting component, the moving component, the first pushing component, the second lifting component, the heating component, and the second lifting component.

[0015] The control module controls the moving component to drive the first worktable to insert into the through hole, and the groove is located directly above the protrusion.

[0016] The control module works in conjunction with the first lifting component to drive the first worktable to descend, and the groove and the protrusion are engaged in a plugging connection.

[0017] The control module controls the second lifting assembly to drive the positioning bar down and abut against the upper surface of the first worktable between the two main plates, and controls the second lifting assembly to drive the positioning bar down and abut against the upper side of the secondary plate.

[0018] The control module, in conjunction with the second lifting component, controls the welding strip to rise to the side of the sub-plate;

[0019] The control module controls the first pushing component to drive the pushing block to cooperate with the positioning strip to horizontally push the main plate to fit the lifting component.

[0020] As a further improvement, the moving component includes a moving platform located below the first worktable, and the first lifting component is disposed between the moving platform and the first worktable.

[0021] It also includes a guide rail laid flat on the ground, rollers rotatably mounted under the moving platform, and a drive motor that drives the rollers to rotate forward / reverse. The control module is electrically connected to the drive motor.

[0022] As a further improvement, the height of the through hole is greater than the combined thickness of the worktable, the plate, and the protrusion, and the width of the worktable extending toward the fixed platform is greater than the width of the through hole.

[0023] As a further improvement, several sets of ball bearings are arranged above the workbench, and the bottom of the plate fits against the top of the ball bearings.

[0024] As a further improvement, a number of protrusions are longitudinally arranged on one side of the welding rod, and a number of high-heat sections are arranged on the other side of the welding rod corresponding to the positions of the protrusions. The protrusions face the main plate side, and the high-heat sections face the secondary plate side.

[0025] As a further improvement, it also includes a second push block disposed on the side of the positioning bar facing the sub-plate, and a second push assembly for driving the second push block to move laterally toward the sub-plate, the second push assembly being electrically connected to the control module;

[0026] The control module controls the first and second pushing components to push and press the main plate and the secondary plate onto the corresponding two sides of the welding strip. The welding strip, in conjunction with the heating component under the control of the control module, heats the sides of the main plate and the secondary plate, forming an inner groove on one side of the main plate and a protrusion on the side of the secondary plate.

[0027] As a further improvement, the welding strip includes a fixing frame and a first welding piece installed on the left side of the fixing frame, wherein the protrusion is arranged vertically and arranged laterally on the outer side of the first welding piece.

[0028] As a further improvement, the welding strip also includes a second welding piece installed on the right side of the fixing frame, wherein the high-heat part is arranged vertically and arranged laterally on the outer side of the first welding piece.

[0029] As a further improvement, the welding strip also includes a third welding piece mounted above the fixing frame, the top of the third welding piece being flat.

[0030] Beneficial effects:

[0031] This invention ensures that the main plate is accurately pushed to the predetermined position through precise control of the first pushing component. Furthermore, the groove below the first worktable engages with the protrusion in the through hole of the fixed platform, providing physical positioning and ensuring the stability of the plate's position during the welding process.

[0032] The positioning bar is lowered by a second lifting assembly, abutting against the upper surface of the first worktable between the two main plates, further fixing the position of the main plates and preventing them from moving during welding. The positioning bar is also lowered by the second lifting assembly, abutting against the upper diagonal surface of the sub-plate, ensuring the sub-plate's precise position before welding. The welding bar is raised / lowered by a third lifting assembly, ensuring precise alignment with the side of the sub-plate, thereby guaranteeing the accuracy of the weld surface and maximizing the weld area.

[0033] In addition, the movement of all components is controlled by the control module, which reduces the uncertainty of manual operation and the error caused by fatigue, and improves the stability and repeatability of welding.

[0034] Compared to existing technologies, this multi-axis linkage control system, with precise electric components driving the lifting, translation, and pushing of the first worktable, ensures high precision in the loading process. The cooperation between the convex and concave strips and the locking mechanism of the positioning strips provide dual physical positioning, further reducing loading errors. The use of positioning strips ensures the precise position of the sub-plate, and the precise alignment of the welding strips guarantees the accuracy of the weld surface, avoiding problems such as weld surface misalignment and reduced weld area. The fixing effect of the positioning strips ensures that the plate remains in a fixed position during welding, thereby improving weld strength. This reduces manual operation steps, improves production efficiency, and lowers production delays and scrap rates caused by improper manual operation. Furthermore, the automated control module ensures consistency in each loading and welding process, improving production consistency and reliability. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural diagram of a sheet metal welding equipment for plastic mold processing according to this utility model.

[0037] Figure 2 This is a cross-sectional structural diagram of a plate welding equipment for plastic mold processing according to this utility model.

[0038] Figure 3 yes Figure 2 A magnified schematic diagram of the central part of the structure.

[0039] Figure 4 This is a rear side view of a sheet metal welding device for plastic mold processing according to this utility model.

[0040] Figure 5 yes Figure 4 A partially enlarged cross-sectional schematic diagram.

[0041] Figure 6 This is a schematic diagram of the working state of a welding rod according to this utility model.

[0042] Figure 7This utility model relates to a control diagram for a plate welding equipment module for plastic mold processing.

[0043] 1. First worktable; 11. First lifting assembly; 12. Moving assembly; 13. First pushing block; 14. First pushing assembly; 15. Protrusion; 16. Ball bearing; 2. Fixed platform; 21. Through hole; 22. Groove; 3. Second worktable; 31. Positioning strip; 32. Second lifting assembly; 5. Welding strip; 4. Moving platform; 41. Guide rail; 42. Roller; 43. Drive motor; 9. Main plate; 6. Sub-plate; 51. First welding piece; 52. Second welding piece; 53. Third welding piece; 54. Protrusion; 55. High-heat part; 56. Third lifting assembly; 57. Second pushing block; 58. Second pushing assembly; 7. Heating module; 71. Heating element; 8. Control module; 311. Upper stop; 312. Side stop. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0045] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] Reference Figure 1-7 As shown, a sheet metal welding device for plastic mold processing includes:

[0047] A first workbench 1 for placing the main plate 9, a first lifting assembly 11 for driving the first workbench 1 to rise / fall, and a moving assembly 12 for driving the first workbench 1 to move laterally.

[0048] A first push block 13 is disposed on one side of the main plate 9, and a first push component 14 is disposed to drive the first push block 13 to move laterally;

[0049] A fixed platform 2 is provided on one side of the first workbench 1. A through hole 21 is provided on the side of the fixed platform 2. A protrusion 15 is provided at the bottom inside the through hole 21. A groove 22 corresponding to the protrusion 15 is provided at the bottom of the first workbench 1.

[0050] A second workbench 3 for placing the sub-plate 6, a positioning bar 31 disposed diagonally above the sub-plate 6, and a second lifting assembly 32 for driving the positioning bar 31 to rise / fall.

[0051] A welding assembly is disposed between the first workbench 1 and the second workbench 3. The welding assembly includes a welding rod 5, a heating assembly for controlling the heating of the welding rod 5, and a third lifting assembly 56 disposed below the welding rod 5. The third lifting assembly 56 controls the welding rod 5 to rise / fall.

[0052] Control module 8, which is electrically connected to the first lifting component 11, the moving component 12, the first pushing component 14, the second lifting component 32, the heating component, and the second lifting component 32;

[0053] The control module 8 controls the moving component 12 to drive the first worktable 1 to insert into the through hole 21, and the groove 22 is located directly above the protrusion 15;

[0054] The control module 8 cooperates with the first lifting component 11 to drive the first worktable 1 to descend, and the groove 22 and the protrusion 15 are engaged in a plugging connection.

[0055] The control module 8 controls the second lifting component 32 to drive the positioning bar 31 to descend and abut against the upper surface of the first worktable 1 between the two main plates 9, and controls the second lifting component 32 to drive the positioning bar 31 to descend and abut against the sub-plate 6 diagonally above it.

[0056] The control module 8, in conjunction with the second lifting component 32, controls the welding strip 5 to rise to the side of the sub-plate 6;

[0057] The control module 8 controls the first pushing component 14 to drive the pushing block to cooperate with the positioning strip 31 to horizontally push the main plate 9 to fit the lifting component.

[0058] The precise control of the first lifting assembly 11 and the moving assembly 12 ensures that the first worktable 1 is accurately positioned when inserted into the through hole 21 of the fixed table 2. This reduces errors caused by manual or semi-automatic operation during the feeding process.

[0059] Through the precise control of the first pushing component 14, it is ensured that the main board 9 can be accurately pushed to the predetermined position.

[0060] Furthermore, the groove 22 below the first workbench 1 engages with the protrusion 15 in the through hole 21 of the fixed table 2 to provide physical positioning and ensure the stability of the plate during the welding process.

[0061] The positioning bar 31 is driven to descend by the second lifting component 32. The positioning bar 31 abuts against the upper surface of the first worktable 1 between the two main plates 9, further fixing the position of the main plates 9 and preventing them from moving during the welding process.

[0062] The positioning bar 31 is driven to descend by the second lifting component 32, and the positioning bar 31 abuts against the upper side of the sub-plate 6 to ensure the accurate position of the sub-plate 6 before welding.

[0063] The third lifting component 56 controls the rise / fall of the welding rod 5, ensuring that the welding rod 5 can be precisely aligned with the side of the sub-plate 6, thereby ensuring the accuracy of the welding surface and maximizing the welding area.

[0064] In addition, the movement of all components is uniformly controlled by the control module 8, which reduces the uncertainty of manual operation and the error caused by fatigue, and improves the stability and repeatability of welding.

[0065] Compared with existing technologies, the lifting, translation and pushing of the first worktable 1 are all driven by precise electric components through multi-axis linkage control, which ensures high precision in the loading process.

[0066] The cooperation between the protrusion 15 and the groove 22, as well as the locking mechanism of the positioning strip 31, provides physical dual positioning, further reducing feeding errors.

[0067] The use of positioning strip 31 ensures the precise position of the sub-plate 6, and the accurate alignment of welding strip 5 guarantees the accuracy of the weld surface, avoiding problems such as weld surface misalignment and reduced weld area. Through the fixing effect of positioning strip 31, the plate remains in a fixed position during the welding process, thereby improving the weld strength.

[0068] The reduction of manual operation steps improves production efficiency and reduces production delays and scrap rates caused by improper manual operation. Furthermore, the automated control module 8 ensures consistency in each material loading and welding process, improving production consistency and reliability.

[0069] The moving component 12 includes a moving platform 4 located below the first worktable 1, and the first lifting component 11 is disposed between the moving platform 4 and the first worktable 1.

[0070] It also includes a guide rail 41 laid flat on the ground, a roller 42 rotatably mounted under the moving platform 4, and a drive motor 43 that drives the roller 42 to rotate forward / reverse. The control module 8 is electrically connected to the drive motor 43.

[0071] The guide rails 41 are arranged in parallel in one set, and there are four rollers 42, with two rollers arranged in a group on both sides of the moving platform 4.

[0072] To ensure that the travel of the first workbench 1 is not interfered with, the height of the through hole 21 is greater than the combined thickness of the first workbench 1, the plate, and the protrusion 15, and the width of the first workbench 1 extending toward the fixed platform 2 is greater than the width of the through hole 21.

[0073] Because the main plate 9 is quite heavy, several sets of ball bearings 16 are arranged above the first workbench 1 to reduce the difficulty of movement and the coefficient of friction. The lower part of the main plate 9 is in contact with the upper part of the ball bearings 16. By setting the ball bearings 16, the coefficient of friction is reduced, thereby reducing the difficulty of pushing the main plate 9. The convex strip 15 is a long strip-shaped protrusion structure.

[0074] In this plastic mold processing sheet metal welding equipment, in order to further enhance the welding strength of the finished product, a welding strip 5, a second pushing block 57, and a second pushing component 58 are introduced. Several sets of protrusions 54 are longitudinally arranged on one side of the welding strip 5, and several sets of high-heat parts 55 are arranged on the other side of the welding strip 5 corresponding to the position of the protrusions 54. The protrusions 54 face the main sheet metal 9, and the high-heat parts 55 face the secondary sheet metal 6.

[0075] It also includes a second push block 57 disposed on the side of the positioning bar 31 facing the sub-plate 6, and a second push component 58 that drives the second push block 57 to move laterally toward the sub-plate 6, the second push component 58 being electrically connected to the control module 8;

[0076] The control module 8 controls the first pushing component 14 and the second pushing component 58 to push and press the main plate 9 and the secondary plate 6 onto the corresponding two sides of the welding strip 5. The welding strip 5, in conjunction with the heating component, heats the sides of the main plate 9 and the secondary plate 6 under the control of the control module 8, forming an inner groove 22 on one side of the main plate 9 and a protrusion on the side of the secondary plate 6.

[0077] As the protrusion 54 comes into contact with the main plate 9 during heating, an inner groove 22 is formed on the side of the main plate 9 through thermal melting. This design increases the shape complexity of the welding contact surface, thereby improving the welding strength.

[0078] During the heating process, the high-heat section 55 comes into contact with the sub-plate 6, forming protrusions on the side of the sub-plate 6 through thermal melting. Similarly, this design can increase the shape complexity of the welding contact surface and improve the welding strength.

[0079] Advantages of using the second push block 57 and the second push component 58:

[0080] The dual pushing and pressing mechanism, controlled by the control module 8, simultaneously pushes and presses the main plate 9 and the secondary plate 6 onto both sides of the welding strip 5. This dual pressing design ensures greater stability of the plate's position during welding, reducing welding errors caused by plate movement.

[0081] The lateral movement of the second push block 57 can precisely control the position of the sub-plate 6, ensuring that it is aligned with the main plate 9, further improving the welding accuracy.

[0082] Not only does it increase the complexity of the contact surface, but the design of the protrusion 54 and the high-heat part 55 makes the shape of the welding contact surface more complex, increasing the welding area and contact points, thereby significantly improving the strength of the weld.

[0083] Moreover, it can achieve stable pressing. The design of the double push block can ensure that the main plate 9 and the secondary plate 6 are more stable on both sides of the welding strip 5, reducing the reduction of welding area and weld point misalignment caused by the movement of the plates during the welding process.

[0084] The introduction of the second pusher block 57 allows for more precise alignment of the sub-plate 6, reducing misalignment caused by feeding errors. Precise control by the control module 8 ensures consistent parameters in each welding process, improving welding consistency and repeatability.

[0085] The welding strip 5 is further refined. The welding strip 5 includes a fixing frame and a first welding piece 51 installed on the left side of the fixing frame. The protrusion 54 is arranged vertically and arranged horizontally on the outer side of the first welding piece 51.

[0086] The welding strip 5 also includes a second welding piece 52 installed on the right side of the fixing frame. The high-heat part 55 is arranged vertically and horizontally on the outer side of the first welding piece 51.

[0087] The protrusion 54 is a triangular pyramid structure, wherein the width of the lower end of the triangular pyramid is greater than the width of the upper end.

[0088] The high-heat section 55 is a triangular pyramid, wherein the width of the lower end of the triangular pyramid is greater than the width of the upper end.

[0089] To prevent interference during the downward movement of the welding rod 5, the triangular pyramid structure can better penetrate into the material of the main plate 9 during the heating process, forming a deeper layer of fusion and enhancing the welding contact points.

[0090] Since molten plastic residue will be present on the sides of the first welding piece 51 and the second welding piece 52 during the deheating process of the main plate 9 and the auxiliary plate 6, and the residue needs to be removed after welding, and removing the residue from both sides takes a lot of time, the welding strip 5 also includes a third welding piece 53 installed above the fixing frame, and the top of the third welding piece 53 is flat.

[0091] With the help of the third welding piece 53, the lower surfaces of the main plate 9 and the secondary plate 6 are fully bonded together, which can spread the residual adhesive on the lower surface and fully fill the weld seam on the lower surface of the main plate 9 and the secondary plate 6, making it appear seamless, thus forming a single side.

[0092] The first welding piece 51, the second welding piece 52, and the third welding piece 53 are made of copper. The high-heat part 55 can be made of a material with better thermal conductivity than copper, such as thermally conductive composite material or metal matrix composite material.

[0093] The first lifting assembly 11, the second lifting assembly 32, the third lifting assembly 56, and the moving assembly 12 are all telescopic hydraulic cylinders connected to the first driving target component, as well as hydraulic pump structures that drive the telescopic hydraulic cylinders to extend and retract. The first driving target component includes the moving platform 4, the first worktable 1, the positioning bar 31, and the welding bar 5.

[0094] The positioning strip 31 is located near the upper stop 311 of the sub-plate 6 and abuts against the side stop 312 on the back of the sub-plate 6, fully clamping the sub-plate 6. The upper stop 312 fully abuts against the sub-plate 6, and the width of the upper stop 312 is 0.5-1cm shorter than the sub-plate 6, with a clamping distance of 0.5-1mm. A telescopic cylinder is installed on the side of the side stop 312 facing the sub-plate 6, and an air pump is installed on the side of the side stop 312 away from the sub-plate 6.

[0095] The first pushing component 14 and the second pushing component 58 are both telescopic cylinders connected to the second driving target and air pump structures that drive the telescopic cylinders to extend and retract.

[0096] The moving component 12 includes a moving platform 4 located below the first worktable 1, and the first lifting component 11 is disposed between the moving platform 4 and the first worktable 1.

[0097] It also includes a guide rail 41 laid flat on the ground, a roller 42 rotatably mounted under the moving platform 4, and a drive motor 43 that drives the roller 42 to rotate forward / reverse. The control module 8 is electrically connected to the drive motor 43.

[0098] The heating assembly includes heating elements 71 attached to the first, second, and third solder pads 53 and a heating module 7 for controlling the heating elements 71.

[0099] The second driving targets are the first pushing block 13, the second pushing block 57, the main plate 9, and the secondary plate 6.

[0100] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0101] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0102] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sheet metal welding device for plastic mold processing, characterized in that, include: A first workbench (1) for placing the main plate (9), a first lifting assembly (11) for driving the first workbench (1) to rise / fall, and a moving assembly (12) for driving the first workbench (1) to move laterally. A first push block (13) is disposed on one side of the main plate (9), and a first push component (14) is disposed to drive the first push block (13) to move laterally; A fixed platform (2) is provided on one side of the first workbench (1). A through hole (21) is provided on the side of the fixed platform (2). A protrusion (15) is provided below the inside of the through hole (21). A groove (22) corresponding to the protrusion (15) is provided below the first workbench (1). A second workbench (3) for placing the sub-plate (6), a positioning bar (31) set diagonally above the sub-plate (6), and a second lifting assembly (32) for driving the positioning bar (31) to rise / fall. A welding assembly is provided between the first workbench (1) and the second workbench (3). The welding assembly includes a welding rod (5), a heating assembly for controlling the heating of the welding rod (5), and a third lifting assembly (56) provided below the welding rod (5). The third lifting assembly (56) controls the welding rod (5) to rise / fall. The control module (8) is electrically connected to the first lifting component (11), the moving component (12), the first pushing component (14), the second lifting component (32), the third lifting component (56), and the heating component; The control module (8) controls the moving component (12) to drive the first worktable (1) to insert into the through hole (21), and the groove (22) is located directly above the protrusion (15); The control module (8) cooperates with the first lifting assembly (11) to drive the first worktable (1) to descend, and the groove (22) and the protrusion (15) are engaged and inserted. The control module (8) controls the second lifting component (32) to drive the positioning bar (31) to descend and abut against the upper surface of the first worktable (1) between the two main plates (9), and controls the second lifting component (32) to drive the positioning bar (31) to descend and abut against the sub-plate (6) diagonally above it. The control module (8) works in conjunction with the third lifting component (56) to control the welding strip (5) to rise to the side of the sub-plate (6); The control module (8) controls the first push component (14) to drive the push block to cooperate with the positioning strip (31) to horizontally push the main plate (9) to fit the lifting component.

2. The sheet metal welding equipment for plastic mold processing according to claim 1, characterized in that: The moving component (12) includes a moving platform (4) located below the first worktable (1), and the first lifting component (11) is disposed between the moving platform (4) and the first worktable (1). It also includes a guide rail (41) laid flat on the ground, a roller (42) rotatably mounted under the moving platform (4), and a drive motor (43) that drives the roller (42) to rotate forward / reverse. The control module (8) is electrically connected to the drive motor (43).

3. The sheet metal welding equipment for plastic mold processing according to claim 1, characterized in that: The height of the through hole (21) is greater than the combined thickness of the workbench, the plate, and the protrusion (15), and the width of the workbench extending toward the fixed platform (2) is greater than the width of the through hole (21).

4. The sheet metal welding equipment for plastic mold processing according to claim 1, characterized in that: Several sets of ball bearings (16) are also arranged above the workbench, and the bottom of the plate is attached to the top of the ball bearings (16).

5. The sheet metal welding equipment for plastic mold processing according to claim 1, characterized in that: The welding strip (5) has a number of protrusions (54) arranged longitudinally on one side, and a number of high-heat parts (55) are arranged on the other side of the welding strip (5) corresponding to the position of the protrusions (54). The protrusions (54) face the main plate (9), and the high-heat parts (55) face the secondary plate (6).

6. The sheet metal welding equipment for plastic mold processing according to claim 5, characterized in that: It also includes a second push block (57) disposed on the side of the positioning bar (31) facing the sub-plate (6), and a second push component (58) that drives the second push block (57) to move laterally towards the sub-plate (6), the second push component (58) being electrically connected to the control module (8); The control module (8) controls the first pushing component (14) and the second pushing component (58) to push and press the main plate (9) and the secondary plate (6) onto the corresponding two sides of the welding strip (5). The welding strip (5) cooperates with the heating component to heat the sides of the main plate (9) and the secondary plate (6) under the control of the control module (8), forming an inner groove (22) on one side of the main plate (9) and a protrusion on the side of the secondary plate (6).

7. The sheet metal welding equipment for plastic mold processing according to claim 6, characterized in that: The welding strip (5) includes a fixing frame and a first welding piece (51) installed on the left side of the fixing frame. The protrusion (54) is arranged vertically and arranged horizontally on the outer side of the first welding piece (51).

8. The sheet metal welding equipment for plastic mold processing according to claim 7, characterized in that: The welding strip (5) also includes a second welding piece (52) installed on the right side of the fixing frame. The high-heat part (55) is arranged vertically and horizontally on the outer side of the first welding piece (51).

9. The sheet metal welding equipment for plastic mold processing according to claim 8, characterized in that: The welding strip (5) also includes a third welding piece (53) mounted above the fixing frame, the top of the third welding piece (53) being flat.

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