A welding device and method for mold manufacturing

Abstract

The present application relates to the technical field of welding equipment, in particular to a welding device and method for die manufacturing, the welding device comprising: a trajectory forming member, which is arranged opposite to a die to be welded along an X axis; a mounting frame, which is movable along a Y axis and a Z axis relative to the trajectory forming member and rotatable about an axis L; a welding and cutting assembly, which comprises a first sliding frame movably provided on the mounting frame along the X axis, and a welding member for welding the die and a cutting member for cutting a guide groove identical to a welding trajectory on the trajectory forming member, which are arranged on the first sliding frame along the X axis at intervals; and a polishing and positioning assembly, which comprises a second sliding frame movably provided on the mounting frame along the X axis, and a polishing member for polishing the die to be welded and a positioning member capable of moving along the guide groove, which are arranged on the second sliding frame along the X axis at intervals. The present application can make the polishing member move and polish the welding position of the die along the same trajectory as the welding trajectory, thereby improving the welding and polishing effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a welding device and method for mold manufacturing. BACKGROUND

[0002] In the field of mold manufacturing, after the mold is manufactured, welding repair is usually needed to repair possible defects or damage. The traditional repair method is mainly welding repair, which fills the defects on the surface of the mold by welding. After welding repair, the surface of the welding area often needs further polishing treatment to ensure the smoothness of the mold surface. In the case of irregular welding track, it is difficult for the operator to accurately operate along the welding track in the subsequent polishing process, which not only increases the operation difficulty, but also easily leads to uneven polishing, thereby affecting the quality of the mold welding part. In view of the above problems, the present application provides a welding device and method for mold manufacturing. SUMMARY

[0003] The purpose of the present application is to provide a welding device and method for mold manufacturing to solve the problems raised in the background.

[0004] The present application is realized by the following technical scheme. According to one aspect of the present application, a welding device for mold manufacturing is provided, comprising:

[0005] A track forming member is arranged opposite to the mold to be welded along the X axis;

[0006] A mounting frame is movable along the Y axis and the Z axis and rotatable around the axis L relative to the track forming member, the X axis, the Y axis and the Z axis are perpendicular to each other, and the axis L extends along the X axis direction;

[0007] A welding and cutting assembly comprises a first carriage movably provided on the mounting frame along the X axis, and a welding member for welding the mold and a cutting member for cutting a guide groove with the same welding track on the track forming member arranged on the first carriage along the X axis at intervals; and

[0008] A polishing positioning assembly comprises a second carriage movably provided on the mounting frame along the X axis, and a polishing member for polishing the mold to be welded and a positioning member capable of moving along the guide groove arranged on the second carriage along the X axis at intervals, the first carriage and the second carriage are distributed around the axis L; and in the X axis direction, the interval between the welding member and the cutting member is the same as the interval between the polishing member and the positioning member.

[0009] Optionally, the trajectory forming member comprises a winding device, an unwinding device and a forming plate, the winding device and the unwinding device are spaced apart along the X axis or the Y axis, and the forming plate is connected between the winding device and the unwinding device and is movable along the X axis or the Y axis.

[0010] Optionally, the trajectory forming member further comprises two pairs of positioning shafts, the two pairs of positioning shafts are located between the winding device and the unwinding device, and are arranged in the same direction as the distribution direction of the winding device and the unwinding device.

[0011] Optionally, a positioner is arranged between the first sliding frame and the second sliding frame, and the positioner selectively locks the first sliding frame on the second sliding frame to restrict or allow the first sliding frame to move relative to the second sliding frame along the X axis.

[0012] Optionally, the positioner comprises a driving handle, a positioning piece and a positioning groove, the driving handle is rotatably connected to the first sliding frame about an axis M, the positioning piece is fixed to the driving handle and extends in the radial direction of the driving handle, and the positioning groove is arranged on the second sliding frame, and the positioning piece is positioned and matched with the positioning groove when the driving handle rotates about the axis M.

[0013] Optionally, the mold manufacturing welding device further comprises a pressing device, the pressing device comprises a pressing member and a driving member, the pressing member is movably arranged on the mounting frame in a direction perpendicular to the axis L, and the driving member is used to move the pressing member in a direction perpendicular to the axis L.

[0014] Optionally, the mold manufacturing welding device further comprises a processing table, the processing table has a processing surface, and the trajectory forming member and the mold to be welded are arranged opposite to each other on the processing surface along the X axis.

[0015] Optionally, a placement area is defined on the processing surface, and the mold to be welded is fixed in the placement area by a clamp.

[0016] Optionally, a driver for driving the mounting frame to move along the Y axis and the Z axis is arranged between the processing table and the mounting frame, the driver comprises a sliding block sliding rail assembly, a screw rod driving assembly and a jacking cylinder, the jacking cylinder is slidingly mounted on the processing surface of the processing table through the sliding block sliding rail assembly, the jacking cylinder is telescopic along the Z axis, the output end of the jacking cylinder is provided with the mounting frame, and the screw rod driving assembly is installed between the cylinder body of the jacking cylinder and the processing table to drive the jacking cylinder to move along the Y axis.

[0017] According to another aspect of the present application, a method using the mold manufacturing welding device is provided, comprising the following steps:

[0018] S100, rotate the mounting frame around the axis L, so that the welding and cutting assembly faces the mold and the trajectory forming piece to be welded;

[0019] S200, move the mounting frame along the Z axis, so that the welding and cutting assembly on the mounting frame approaches the mold and the trajectory forming piece to be welded;

[0020] S300, move the mounting frame along the Y axis, and at the same time, move the first carriage in the welding and cutting assembly along the X axis on the mounting frame, so that the welding part in the welding and cutting assembly welds along the preset trajectory on the mold; the cutting part in the welding and cutting assembly cuts a guide groove with the same trajectory as the welding trajectory on the trajectory forming piece;

[0021] S400, move the mounting frame along the Z axis, so that the welding and cutting assembly on the mounting frame moves away from the mold and the trajectory forming piece to be welded, and the welding is completed;

[0022] S500, rotate the mounting frame around the axis L, so that the polishing and positioning assembly faces the welded mold and the trajectory forming piece;

[0023] S600, move the mounting frame along the Z axis, so that the positioning part in the polishing and positioning assembly inserts into one end of the guide groove, and the polishing part in the polishing and positioning assembly also exactly faces the initial position of the welding;

[0024] S700, move the mounting frame along the Y axis, so that the positioning part moves along the guide groove, and the polishing part polishes the welding position along the polishing trajectory which is the same as the welding trajectory.

[0025] Compared with the prior art, the welding device and method for mold manufacturing have the following beneficial effects:

[0026] 1. The cutting part in the welding device can generate a guide groove with the same trajectory as the welding trajectory on the trajectory forming piece when the welding part welds the mold, and the guide groove can limit the polishing trajectory of the polishing part when the polishing part polishes the welding position of the mold, so that the polishing part moves and polishes the welding position of the mold along the same trajectory as the welding trajectory, thereby improving the welding and polishing effect;

[0027] 2. The winding and unwinding of the forming plate can be realized by the winding device and the unwinding device when different molds are welded, so that the cutting part can generate guide grooves with different trajectories at different positions on the forming plate, and the polishing and guiding requirements under different welding trajectories are met;

[0028] 3. The present application can fix the position of the first slide and the second slide through the positioner before the welding and cutting process using the welding and cutting assembly, so that the cutting part on the first slide and the positioning part on the second slide are aligned on the Y axis, and the welding part on the first slide and the polishing part on the second slide are aligned on the Y axis, and then the welding and cutting process is carried out, so that the positioning part and the initial cutting position (i.e. the starting point of the guide groove) on the track forming part are aligned in the X axis direction, the step of aligning the positioning part and the initial cutting position during subsequent polishing and polishing is omitted, and the efficiency of welding and polishing can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic view of one axis of the present application;

[0030] Figure 2 is a schematic view of the other axis of the present application Figure 1 is a schematic view of the front structure of the present application;

[0031] Figure 3 is a schematic view of the other axis of the present application;

[0032] Figure 4 is a schematic view of the front structure of the present application; Figure 3 is an enlarged schematic view of A of the present application;

[0033] Figure 5 is a schematic view of the mounting bracket, welding and cutting assembly, polishing and positioning assembly and positioner of the present application;

[0034] Figure 6 is a schematic view of the front structure of the present application; Figure 5 is an enlarged schematic view of B of the present application.

[0035] In the figure: 100, trajectory forming piece; 110, winding device; 111, winding frame; 112, winding motor; 113, winding shaft; 120, unwinding device; 121, unwinding frame; 122, unwinding motor; 123, unwinding shaft; 130, forming plate; 131, guide groove; 140, positioning shaft; 200, mounting frame; 210, through groove; 220, guide rod; 300, welding and cutting assembly; 310, first sliding frame; 320, welding piece; 330, cutting piece; 400, polishing positioning assembly; 410, second sliding frame; 420, polishing piece; 421, polishing motor; 422, polishing head; 430, positioning piece; 500, mold; 510, welding trajectory; 600, positioner; 610, driving handle; 620, positioning sheet; 630, positioning groove; 640, positioning plate; 641, chamfer; 700, abutting device; 710, abutting piece; 720, driving piece; 800, processing table; 810, processing surface; 820, placement area; 830, clamp; 831, clamping table; 832, pressing rod; 833, chuck; 900, driver; 910, sliding block sliding rail assembly; 920, screw rod driving assembly; 930, jacking cylinder; 940, support; 950, switching motor. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] Embodiment: Please refer to Figures 1 to 6 According to an aspect of an embodiment of the present application, a welding device for mold manufacturing is provided, which comprises a trajectory forming piece 100, a mounting frame 200, a welding and cutting assembly 300, and a polishing positioning assembly 400. The trajectory forming piece 100 and the mold 500 to be welded are arranged opposite to each other along an X axis. The mounting frame 200 is movable along a Y axis and a Z axis relative to the trajectory forming piece 100 and rotatable about an axis L. Figure 1 In the embodiment, the X axis points to the left-right direction. The mounting frame 200 is movable along the Y axis and the Z axis relative to the trajectory forming piece 100 and rotatable about the axis L. Figure 1In the embodiment, the Y-axis and the Z-axis respectively point to the front-back direction and the up-down direction, thus the X-axis, the Y-axis and the Z-axis are perpendicular to each other, and the axis L extends along the X-axis direction; the welding assembly 300 comprises a first carriage 310 movably arranged on the mounting frame 200 along the X-axis, and a welding member 320 for welding the mold 500 to be welded and a cutting member 330 for cutting the guide groove 131 on the track forming member 100 to be the same as the welding track 510, which are arranged on the first carriage 310 along the X-axis at intervals; specifically, the welding member 320 can be a laser welder, and the cutting member 330 can be a laser cutter. In other embodiments, the welding member 320 can also be an electric arc welding gun, a resistance welding machine or other welding equipment; the cutting member 330 can also be a plasma cutting gun, a water jet cutting device or other cutting equipment; the polishing positioning assembly 400 comprises a second carriage 410 movably arranged on the mounting frame 200 along the X-axis, and a polishing member 420 for polishing the mold 500 to be welded and a positioning member 430 capable of moving along the guide groove 131, which are arranged on the second carriage 410 along the X-axis at intervals; specifically, the positioning member 430 can be a rod-shaped component, the diameter of which is matched with the width of the guide groove 131, so that the rod-shaped component can only move along the length direction of the guide groove 131, and the polishing member 420 is a polishing head 422 driven to rotate by a polishing motor 421. In other embodiments, the positioning member 430 can also be a block-shaped component, as long as the shape is matched with the cross-sectional shape of the guide groove 131; the polishing member 420 can also be a sand belt driven to rotate by the polishing motor 421, which polishes the mold 500 to be welded by rotation. The first carriage 310 and the second carriage 410 are distributed around the axis L, and the first carriage 310 and the second carriage 410 are movably arranged on the mounting frame 200 along the X-axis through two guide rods 220; and in the X-axis direction, the distance between the welding member 320 and the cutting member 330 is the same as the distance between the polishing member 420 and the positioning member 430.

[0038] The welding device with the above structure can be used to weld the mold 500 along an irregular preset track. Firstly, the mounting frame 200 is rotated around the axis L so that the welding and cutting assembly 300 faces the mold 500 to be welded and the track forming piece 100. Then, the mounting frame 200 is moved along the Z axis so that the welding and cutting assembly 300 on the mounting frame 200 approaches the mold 500 to be welded and the track forming piece 100. Subsequently, the mounting frame 200 is moved along the Y axis while the first sliding frame 310 in the welding and cutting assembly 300 is moved along the X axis on the mounting frame 200. At this time, the welding piece 320 in the welding and cutting assembly 300 welds along the preset track on the mold 500, and the cutting piece 330 in the welding and cutting assembly 300 cuts the guide groove 131 on the track forming piece 100, which has the same direction as the welding track 510. Thus, the welding is completed. After the welding is completed, the polishing and positioning assembly 400 can be used to polish the cutting track. During the polishing, the mounting frame 200 is moved along the Z axis so that the welding and cutting assembly 300 on the mounting frame 200 is away from the mold 500 to be welded and the track forming piece 100. Then, the mounting frame 200 is rotated around the axis L so that the polishing and positioning assembly 400 faces the welded mold 500 and the track forming piece 100. Then, the mounting frame 200 is moved along the Z axis again so that the positioning piece 430 in the polishing and positioning assembly 400 is inserted into one end of the guide groove 131. At this time, the polishing piece 420 in the polishing and positioning assembly 400 is just opposite to the initial welding position. Finally, the mounting frame 200 is moved along the Y axis so that the positioning piece 430 slides along the positioning groove 630, and the polishing piece 420 moves and polishes the welding position of the mold 500 along the same track as the welding track 510. Thus, the polishing track is consistent with the welding track 510, which improves the welding and polishing effect.

[0039] For different molds 500, the welding tracks 510 can be different, and it is troublesome to generate different guide grooves 131 by replacing the track forming member 100. Therefore, in some embodiments, the track forming member 100 includes a winding device 110, an unwinding device 120, and a forming plate 130. The winding device 110 and the unwinding device 120 are spaced apart along the X axis. The forming plate 130 is connected between the winding device 110 and the unwinding device 120 and is movable along the X axis. More specifically, the winding device 110 includes a winding frame 111, a winding motor 112, and a winding shaft 113. The winding shaft 113 is rotatably connected to the winding frame 111 and is driven to rotate by the winding motor 112. The unwinding device 120 includes an unwinding frame 121, an unwinding motor 122, and an unwinding shaft 123. The unwinding shaft 123 is rotatably connected to the unwinding frame 121 and is driven to rotate by the unwinding motor 122. The forming plate 130 can be a spring steel sheet. One end of the forming plate 130 is fixed to the winding shaft 113, and the other end is fixed to the unwinding shaft 123. It can be understood that when different molds 500 need to be welded, the winding and unwinding of the forming plate 130 can be achieved by the winding device 110 and the unwinding device 120. This facilitates the cutting member 330 to generate different guide grooves 131 on the forming plate 130 at different positions, thereby meeting the grinding guide requirements under different welding tracks 510. In some other embodiments, the winding device 110 and the unwinding device 120 can also be spaced apart along the Y axis. Correspondingly, the forming plate 130 is movable along the Y axis.

[0040] In some embodiments, the track forming member 100 further includes two pairs of positioning shafts 140. The two pairs of positioning shafts 140 are located between the winding device 110 and the unwinding device 120 and are arranged in the same direction as the distribution direction of the winding device 110 and the unwinding device 120. The two pairs of positioning shafts 140 can keep the forming plate 130 between the winding device 110 and the unwinding device 120 in a horizontal state at all times, so as to facilitate the cutting member 330 to accurately cut the guide groove 131 on the forming plate 130 in line with the welding track 510.

[0041] In some embodiments, a positioner 600 is arranged between the first carriage 310 and the second carriage 410, which can selectively lock the first carriage 310 on the second carriage 410 to restrict or allow the first carriage 310 to move relative to the second carriage 410 along the X-axis direction. In this way, when the welding and cutting process is performed by using the welding assembly 300, the position of the first carriage 310 and the second carriage 410 can be fixed by the positioner 600 first, so that the cutting member 330 on the first carriage 310 is aligned with the positioning member 430 on the second carriage 410 along the Y-axis, and the welding member 320 on the first carriage 310 is aligned with the polishing member 420 on the second carriage 410 along the Y-axis, and then the welding and cutting process is performed. In this way, the positioning member 430 can be aligned with the initial cutting position (i.e., the starting point of the guide groove 131) on the trajectory forming member 100 along the X-axis direction, and the step of aligning the positioning member 430 with the initial cutting position during subsequent polishing and polishing process is omitted, which can improve the efficiency of welding and polishing.

[0042] In some embodiments, the positioner 600 includes a driving handle 610, a positioning sheet 620, and a positioning groove 630. The driving handle 610 is rotationally connected to the first carriage 310 about an axis M. The positioning sheet 620 is fixed to the driving handle 610 and extends along the radial direction of the driving handle 610. The positioning groove 630 is arranged on the second carriage 410, and the positioning sheet 620 is positioned and matched with the positioning groove 630 when the driving handle 610 rotates about the axis M. In this embodiment, two positioning plates 640 are fixedly arranged on the second carriage 410 with a gap therebetween, and the gap is the positioning groove 630. In order to facilitate the positioning sheet 620 to be accurately rotated into the positioning groove 630, chamfers 641 are arranged on the opposite sides of the free ends of the two positioning plates 640, and the chamfers 641 make the opening of the positioning groove 630 have a tapered structure. It can be understood that, by rotating the driving handle 610, the positioning sheet 620 can be moved into or out of the positioning groove 630 by using the positioner 600 having the above structure, so as to achieve the purpose of restricting or allowing the first carriage 310 to move relative to the second carriage 410 along the X-axis direction.

[0043] In some embodiments, the mold 500 manufacturing welding device further comprises a pressing device 700, the pressing device 700 comprises a pressing member 710 and a driving member 720, the pressing member 710 is movably arranged on the mounting frame 200 in a direction perpendicular to the axis L, and the driving member 720 is used to move the pressing member 710 in the direction perpendicular to the axis L. In the embodiment, the mounting frame 200 is provided with a through slot 210 corresponding to the position of the second sliding frame 410, the pressing member 710 is arranged in the through slot 210, and the driving member 720 is a pneumatic cylinder, the cylinder body of the pneumatic cylinder is fixed on the mounting frame 200, and the output shaft of the pneumatic cylinder is fixed with the pressing member 710. It can be understood that the pressing device 700 is used in cooperation with the positioning device 600, specifically, after the positioning device 600 locks the position of the first sliding frame 310 relative to the second sliding frame 410 in the X-axis direction, the pressing device 700 is used to fix the first sliding frame 310 on the mounting frame 200, so that when the locking between the first sliding frame 310 and the second sliding frame 410 is released subsequently, the position of the second sliding frame 410 relative to the mounting frame 200 in the X-axis direction will not change at will, so as to ensure that the positioning member 430 can always be aligned with the initial cutting position on the trajectory forming member 100 in the X-axis direction before polishing.

[0044] In some embodiments, the mold 500 manufacturing welding device further comprises a processing table 800, the processing table 800 has a processing surface 810, and the trajectory forming member 100 and the mold 500 to be welded are arranged relative to each other in the X-axis direction on the processing surface 810. In other embodiments, the processing table 800 is not necessary, as long as the trajectory forming member 100 and the mold 500 to be welded are arranged relative to each other in the X-axis direction.

[0045] In some embodiments, the processing surface 810 defines a placement area 820, and the mold 500 to be welded is fixed on the placement area 820 by a clamp 830. In the embodiment, the clamp 830 comprises four clamping tables 831 arranged around the placement area 820, the four clamping tables 831 correspond to four side surfaces of the mold 500 respectively, a pressing rod 832 is threadedly connected to each clamping table 831, and a chuck 833 is arranged on the side of the pressing rod 832 facing the placement area 820. By rotating the pressing rod 832, the chuck 833 can be pressed against the side wall of the mold 500, so as to stably fix the mold 500 on the placement area 820 and improve the stability of the mold 500 during processing.

[0046] In some embodiments, a driver 900 is arranged between the processing table 800 and the mounting rack 200 for driving the mounting rack 200 to move along the Y-axis and the Z-axis. The driver 900 includes a sliding block sliding rail assembly 910, a screw rod driving assembly 920, and a jacking cylinder 930. The jacking cylinder 930 is slidingly mounted on the processing surface 810 of the processing table 800 through the sliding block sliding rail assembly 910, and extends and retracts along the Z-axis. The output end of the jacking cylinder 930 is provided with the mounting rack 200. The screw rod driving assembly 920 is arranged between the cylinder body of the jacking cylinder 930 and the processing table 800, and is used to drive the jacking cylinder 930 to move along the Y-axis. The driver 900 with the above structure can drive the mounting rack 200 to stably move along the Y-axis and the Z-axis. Of course, as long as the mounting rack 200 can be driven to stably move along the Y-axis and the Z-axis, the specific structure of the driver 900 is not particularly limited. In addition, in some embodiments, in order to realize the rotation of the mounting rack 200 around the axis L, a support 940 is fixed on the output shaft of the jacking cylinder 930, and a switching motor 950 for driving the mounting rack 200 to rotate is arranged on the support 940.

[0047] According to another aspect of the embodiments of the present application, a method for manufacturing a welding device using the above-mentioned mold 500 is provided, which includes the following steps:

[0048] S100, rotating the mounting rack 200 around the axis L so that the welding and cutting assembly 300 faces the mold 500 to be welded and the trajectory forming piece 100;

[0049] S200, moving the mounting rack 200 along the Z-axis so that the welding and cutting assembly 300 on the mounting rack 200 approaches the mold 500 to be welded and the trajectory forming piece 100;

[0050] S300, moving the mounting rack 200 along the Y-axis, while moving the first sliding carriage 310 in the welding and cutting assembly 300 along the X-axis on the mounting rack 200, so that the welding piece 320 in the welding and cutting assembly 300 is welded along the preset trajectory on the mold 500; the cutting piece 330 in the welding and cutting assembly 300 cuts the guide groove 131 on the trajectory forming piece 100, which has the same direction as the welding trajectory 510;

[0051] S400, moving the mounting rack 200 along the Z-axis so that the welding and cutting assembly 300 on the mounting rack 200 moves away from the mold 500 to be welded and the trajectory forming piece 100, and the welding is completed;

[0052] S500, rotating the mounting rack 200 around the axis L so that the polishing and positioning assembly 400 faces the welded mold 500 and the trajectory forming piece 100;

[0053] S600, moving the mounting frame 200 along the Z axis, so that the positioning member 430 in the polishing positioning assembly 400 is inserted into one end of the guide groove 131, and the polishing member 420 in the polishing positioning assembly 400 is also just opposite the initial position of the welding;

[0054] S700, moving the mounting frame 200 along the Y axis, so that the positioning member 430 moves along the guide groove 131, and the polishing member 420 polishes the welding position along the same polishing track as the welding track 510.

[0055] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding apparatus for mold manufacturing, characterized in that, include: The trajectory forming part (100) is arranged relative to the mold (500) to be welded along the X-axis; Mounting bracket (200) is movable relative to the trajectory forming member (100) along the Y-axis and Z-axis and rotatable about axis L, wherein the X-axis, the Y-axis and the Z-axis are perpendicular to each other, and the axis L extends along the X-axis direction; The welding and cutting assembly (300) includes a first carriage (310) movably mounted on the mounting frame (200) along the X-axis, welding parts (320) for welding the mold (500) to be welded are spaced along the X-axis on the first carriage (310), and cutting parts (330) for cutting guide grooves (131) identical to the welding trajectory (510) on the trajectory forming part (100); and The grinding and positioning assembly (400) includes a second carriage (410) movably disposed on the mounting bracket (200) along the X-axis, a grinding element (420) for grinding and polishing the mold (500) to be welded, and a positioning element (430) movable along the guide groove (131) on the second carriage (410) at intervals along the X-axis. The first carriage (310) and the second carriage (410) are distributed around the axis L. In the X-axis direction, the distance between the welding element (320) and the cutting element (330) is the same as the distance between the grinding element (420) and the positioning element (430).

2. The welding apparatus for mold manufacturing according to claim 1, characterized in that: The trajectory forming component (100) includes a winding device (110), an unwinding device (120), and a forming plate (130). The winding device (110) and the unwinding device (120) are distributed at intervals along the X-axis or the Y-axis. The forming plate (130) is connected between the winding device (110) and the unwinding device (120) and is movable along the X-axis or the Y-axis.

3. The welding apparatus for mold manufacturing according to claim 2, characterized in that: The trajectory forming component (100) further includes two pairs of positioning shafts (140), which are located between the take-up coil (110) and the unwinder (120), and are arranged in the same direction as the distribution direction of the take-up coil (110) and the unwinder (120).

4. The welding apparatus for mold manufacturing according to claim 1, characterized in that: A locator (600) is provided between the first carriage (310) and the second carriage (410). The locator (600) can selectively lock the first carriage (310) onto the second carriage (410) to restrict or allow the first carriage (310) to move relative to the second carriage (410) in the X-axis direction.

5. The welding apparatus for mold manufacturing according to claim 4, characterized in that: The positioner (600) includes a drive handle (610), a positioning piece (620), and a positioning groove (630). The drive handle (610) is rotatably connected to the first carriage (310) about the axis M. The positioning piece (620) is fixed on the drive handle (610) and extends radially along the drive handle (610). The positioning groove (630) is disposed on the second carriage (410). The positioning piece (620) is positioned and engaged with the positioning groove (630) when the drive handle (610) rotates about the axis M.

6. The welding apparatus for mold manufacturing according to claim 4 or 5, characterized in that: It also includes a clamp (700), which includes a clamping member (710) and a driving member (720). The clamping member (710) is movably disposed on the mounting bracket (200) in a direction perpendicular to the axis L, and the driving member (720) is used to move the clamping member (710) in a direction perpendicular to the axis L.

7. The welding apparatus for mold manufacturing according to claim 1, characterized in that: It also includes a processing table (800) having a processing surface (810), on which the trajectory forming part (100) and the mold to be welded (500) are arranged opposite to each other along the X-axis on the processing surface (810).

8. The welding apparatus for mold manufacturing according to claim 7, characterized in that: The processing surface (810) defines a placement area (820), and the mold (500) to be welded is fixed in the placement area (820) by a clamp (830).

9. The welding apparatus for mold manufacturing according to claim 7 or 8, characterized in that: A driver (900) for driving the mounting frame (200) to move along the Y-axis and Z-axis is provided between the machining table (800) and the mounting frame (200). The driver (900) includes a slider rail assembly (910), a lead screw drive assembly (920), and a lifting cylinder (930). The lifting cylinder (930) is slidably mounted on the machining surface (810) of the machining table (800) via the slider rail assembly (910). The lifting cylinder (930) extends and retracts along the Z-axis. The mounting frame (200) is mounted on the output end of the lifting cylinder (930). The lead screw drive assembly (920) is installed between the cylinder body of the lifting cylinder (930) and the machining table (800) to drive the lifting cylinder (930) to move along the Y-axis.

10. A method using a welding apparatus for mold manufacturing as described in any one of claims 1 to 9, characterized in that: Includes the following steps: S100. Rotate the mounting bracket (200) around axis L so that the welding and cutting assembly (300) faces the mold (500) to be welded and the trajectory forming part (100). S200, Move the mounting bracket (200) along the Z-axis so that the welding and cutting assembly (300) on the mounting bracket (200) is close to the mold (500) to be welded and the trajectory forming part (100). S300, the mounting bracket (200) is moved along the Y-axis, and at the same time the first slide (310) in the welding and cutting assembly (300) is moved along the X-axis on the mounting bracket (200), so that the welding part (320) in the welding and cutting assembly (300) is welded on the mold (500) along the preset trajectory; the cutting part (330) in the welding and cutting assembly (300) will cut a guide groove (131) on the trajectory forming part (100) with the same direction as the welding trajectory (510). S400, Move the mounting bracket (200) along the Z-axis to move the welding and cutting assembly (300) on the mounting bracket (200) away from the mold (500) to be welded and the trajectory forming part (100) to complete the welding; S500, Rotate the mounting bracket (200) around axis L so that the grinding positioning component (400) faces the welded mold (500) and the trajectory forming part (100). S600, Move the mounting bracket (200) along the Z-axis so that the positioning part (430) in the grinding positioning assembly (400) is inserted into one end of the guide groove (131) and the grinding part (420) in the grinding positioning assembly (400) is also exactly aligned with the initial welding position; S700, Move the mounting bracket (200) along the Y-axis, so that the positioning part (430) moves along the guide groove (131), and the grinding part (420) grinds the welding position along the same grinding trajectory as the welding trajectory (510).

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