Combined welding device for injection mold

Abstract

The invention relates to the technical field of welding equipment, and particularly discloses an injection mold combined welding device which comprises a base, a mechanical arm body, a welding gun, a moving structure, a clamping structure and a plurality of supporting structures. The mechanical arm body is fixedly arranged on the upper wall of the rear end of the base and located in the middle, the welding gun is fixedly arranged on the mechanical arm body, the moving structure is fixedly arranged in the middle of the upper wall of the base and located on the front side of the mechanical arm body, and the clamping structure is fixedly arranged on the moving structure. The oppositely-arranged supporting structures are driven by the clamping structures to clamp a workpiece, and after the workpiece is driven to rise the moving height, supporting arms in the supporting structures rotate under limiting of clamping wheels, so that one ends of the supporting arms extend into the bottom of the workpiece to support the workpiece to be stressed; the workpiece can be borne by the first carrier roller, so that the workpiece can move left and right to adjust the position; through lower supporting of the supporting arms and clamping force application of the clamping arms, the two workpieces are promoted to move relatively through the moving structure to achieve stable butt joint.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly to an injection mold combined welding device. Background Art

[0002] The welding of injection molds refers to the process of repairing damaged parts of the mold or locally modifying the mold through welding technology during mold manufacturing or repair; during the mold welding process, the use of fixtures is crucial, which can effectively control welding deformation, ensure welding accuracy, and improve welding efficiency; due to the large size of some large injection molds and their heavy weight due to being made of metal, it is labor-consuming to place the workpiece on the fixture equipment before welding, and at the same time, the existing fixtures can only be fixed singly and cannot be adjusted comprehensively. Summary of the Invention

[0003] The purpose of the present invention is to provide an injection mold combined welding device to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: an injection mold combined welding device, including a base, a robotic arm main body, a welding torch, a moving structure, a clamping structure, and several lifting structures; the robotic arm main body is fixedly arranged on the upper wall at the rear end of the base and located in the middle, the welding torch is fixedly arranged on the robotic arm main body, the moving structure is fixedly arranged on the upper wall in the middle of the base and located in front of the robotic arm main body, the clamping structure is fixedly arranged on the moving structure, and several lifting structures are symmetrically arranged on the clamping structure respectively; the robotic arm main body is used to drive the welding torch for automatic welding, the moving structure is used to move the workpiece left and right, the clamping structure is used to apply force to drive the lifting structures to move relatively for clamping, and the lifting structures are used to apply force to clamp the workpiece and lift the lower wall of the workpiece to bear force.

[0005] Preferably, the moving structure includes a pair of brackets, a pair of first electric slide rails, two pairs of first hydraulic cylinders, and two pairs of clamping seats; one ends of the pair of brackets are symmetrically arranged on the upper walls at the left and right ends of the base respectively, the pair of first electric slide rails are symmetrically arranged between the tops of the brackets and are relatively parallel, a pair of relatively moving first moving seats are symmetrically arranged on each of the pair of first electric slide rails, one ends of the two pairs of first hydraulic cylinders are fixedly arranged on the first moving seats of the first electric slide rails respectively, and the two pairs of clamping seats are symmetrically arranged on the telescopic ends of the first hydraulic cylinders respectively.

[0006] Preferably, the clamping structure includes a pair of clamping components, which are symmetrically arranged between a pair of clamping seats respectively, and the clamping components are symmetrically located at the left and right ends of the first hydraulic cylinder; each clamping component includes a bearing plate, a second electric slide rail and a pair of mounting brackets; the bearing plate is fixedly arranged between a pair of clamping seats, and an adjustment slot is arranged through the middle of the bearing plate; the second electric slide rail is fixedly arranged in the middle of the upper wall of the bearing plate, and the second moving seat on the second electric slide rail is movably inserted into the adjustment slot; both pairs of mounting brackets are of a portal structure, the first mounting bracket is fixedly arranged on the lower wall of the front end of the bearing plate, and the second mounting bracket is fixedly arranged on the second electric slide rail and moves back and forth.

[0007] Preferably, several lifting structures are fixedly arranged at both ends of the mounting bracket and are symmetric with each other; each lifting structure includes a pair of clamping arms, several first round arms, several clamping wheels, a supporting arm, a pair of shaft arms, a shaft rod, a pair of gears, a bearing seat, a second hydraulic cylinder and a rack; both pairs of clamping arms are L-shaped, one end of each pair of clamping arms is fixedly clamped on the left and right sides of one end of the mounting bracket respectively, one end of several first round arms is fixedly arranged on the side wall of the clamping arm along an arc respectively, and the first round arms are symmetrically located on both sides of the clamping arm; several clamping wheels are movably arranged on the other end of the first round arms respectively, and the clamping wheels are located between the clamping arms; the supporting arm is of an arc structure, and tooth teeth are arranged on the inner ring side wall of the supporting arm along an arc; grooves are arranged in the middle of the left and right side walls of the supporting arm, the supporting arm is movably embedded between several clamping wheels, and the grooves are sleeved on the clamping wheels; a pair of shaft arms are symmetrically arranged on the opposite side walls of the clamping arms respectively, and the shaft arms are close to the bottom end of the clamping arm; both ends of the shaft rod movably penetrate through the shaft arms respectively, a pair of gears are fixedly sleeved on the shaft rod, one of the gears is located between the first round arms, and one of the gears meshes with the supporting arm; one end of the bearing seat is fixedly arranged on the side wall of one end of one of the clamping arms, and the other end of the bearing seat is located above the gear; one end of the second hydraulic cylinder is fixedly arranged on the lower wall of the other end of the bearing seat, one end of the rack is fixedly arranged on the telescopic end of the second hydraulic cylinder, and the other end of the rack meshes with the other gear.

[0008] Preferably, a third hydraulic cylinder is arranged on the inner ring side wall at the bottom end of the supporting arm, and a first supporting roller is movably arranged on the third hydraulic cylinder, and the first supporting roller is used for the left and right movement of the workpiece.

[0009] Preferably, a pair of second round arms are obliquely installed on the bottom end of the supporting arm, and a second supporting roller is movably arranged between the other ends of the second round arms, and the second supporting roller is used for the supporting arm to rotate to the lower wall of the workpiece and apply force to move by means of the second supporting roller to prevent friction.

[0010] Preferably, the rotation direction of the second supporting roller is perpendicular to the rotation direction of the first supporting roller.

[0011] Preferably, the bottom end of the support arm is located above or below the other end of the clamping arm.

[0012] An injection mold combined welding device proposed by the present invention has the following beneficial effects: It is driven by a simple mechanical structure with the help of a hydraulic cylinder and an electric slide rail; the clamping structure drives the relatively arranged lifting structure to clamp the workpiece, and after lifting the workpiece to a certain height, the support arm in the lifting structure rotates under the limit of the clamping wheel, so that one end of the support arm extends into the bottom of the workpiece to lift the workpiece and make it bear force. Moreover, the workpiece can be carried by the first roller to facilitate the left and right movement and position adjustment of the workpiece; through the support below the support arm and the clamping force applied by the clamping arm, the two workpieces are relatively moved by the moving structure to achieve stable docking; and because there is a certain height after docking, it is also convenient for the robotic arm to drive the welding torch for two-way welding of the upper and lower wall surfaces. To sum up, the present invention has the following effects: 1. The coordinated work of the clamping structure and the lifting structure can automatically complete the clamping, lifting and moving of the workpiece, reduce manual operation and labor intensity. The support arm rotates under the limit of the clamping wheel, which can accurately extend into the bottom of the workpiece to ensure uniform force on the workpiece, avoid tilting or falling off of the workpiece, and the workpiece can be carried by the first roller to conveniently adjust the left and right position of the workpiece to ensure the accuracy during docking.

[0013] 2. Through the support below the support arm and the clamping force applied by the clamping arm, the two workpieces can be stably docked, avoiding deviation or misalignment during the docking process. After docking, the workpiece has a certain height, which is convenient for the robotic arm to drive the welding torch for two-way welding of the upper and lower wall surfaces to ensure the welding quality.

[0014] 3. The present invention integrates various functions such as clamping, lifting, moving, docking and welding, and is suitable for the processing requirements of various workpieces. By adjusting the positions of the clamping structure and the support arm, it can adapt to workpieces of different sizes and improve the versatility of the equipment.

[0015] 4. The dual functions of the clamping arm and the support arm ensure that the workpiece will not fall off or be damaged during the movement and docking process, improving the operation safety. The limit devices of the clamping wheel and the support arm can prevent the workpiece from being overloaded or exceeding the moving range, avoiding equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the assembly structure schematic diagram of the present invention; Figure 2 is Figure 1 the partial enlarged structure schematic diagram of Figure 3 is the split structure schematic diagram of the moving structure; Figure 4 is the split structure schematic diagram of the clamping structure; Figure 5 is the split structure schematic diagram of the lifting structure; Figure 6 Schematic enlarged view of the lifting structure assembly Figure 7 is Figure 5 partial enlarged view of location A in Figure 8 is Figure 5 partial enlarged view of location B in Figure 9 is Figure 5 partial enlarged view of location C in

[0017] In the figure: 1, base; 2, main body of robotic arm; 3, welding torch; 4, moving structure; 41, bracket; 42, first electric slide rail; 43, first hydraulic cylinder; 44, clamping seat; 5, clamping structure; 51, bearing plate; 52, second electric slide rail; 53, mounting bracket; 6, lifting structure; 60, clamping arm; 61, first round arm; 62, clamping wheel; 63, supporting arm; 64, shaft arm; 65, shaft rod; 66, gear; 67, bearing seat; 68, second hydraulic cylinder; 69, rack; 7, third hydraulic cylinder; 8, first idler roller; 9, second round arm; 10, second idler roller; 11, wheel groove. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 - 9 , the present invention provides a technical solution: an injection mold combination welding device, including a base 1, a main body of a robotic arm 2, a welding torch 3, a moving structure 4, a clamping structure 5 and a plurality of lifting structures 6; the main body of the robotic arm 2 is fixedly arranged on the upper wall at the rear end of the base 1 and located in the middle, the welding torch 3 is fixedly arranged on the main body of the robotic arm 2, the moving structure 4 is fixedly arranged on the upper wall in the middle of the base 1 and located in front of the main body of the robotic arm 2, the clamping structure 5 is fixedly arranged on the moving structure 4, and a plurality of lifting structures 6 are symmetrically arranged on the clamping structure 5 respectively; the main body of the robotic arm 2 is used to drive the welding torch 3 to perform automatic welding.

[0020] Furthermore, the moving structure 4 is used to control the workpiece to move left and right. The moving structure 4 includes a pair of brackets 41, a pair of first electric slide rails 42, two pairs of first hydraulic cylinders 43 and two pairs of clamping seats 44; One end of a pair of brackets 41 is symmetrically arranged on the upper walls at the left and right ends of the base 1 respectively. A pair of first electric slide rails 42 are symmetrically arranged between the tops of the brackets 41 and are relatively parallel. Relatively moving first moving seats are symmetrically arranged on both of the pair of first electric slide rails 42. One end of each of the two pairs of first hydraulic cylinders 43 is fixedly arranged on the first moving seats of the first electric slide rails 42. Two pairs of clamping seats 44 are symmetrically arranged on the telescopic ends of the first hydraulic cylinders 43 respectively; the first electric slide rails 42 are supported by the brackets 41, and two first electric slide rails 42 are arranged in parallel to drive together and hold a heavier workpiece, and the first hydraulic cylinders 43 drive the clamping seats 44 to lift and lower.

[0021] Furthermore, the clamping structure 5 is used to apply force to drive the lifting structure 6 to move relatively for clamping. The clamping structure 5 includes a pair of clamping components. The pair of clamping components are symmetrically arranged between one of the pairs of clamping seats 44 respectively, and the clamping components are symmetrically located at the left and right ends of the first hydraulic cylinder 43; the clamping components include a bearing plate 51, a second electric slide rail 52 and a pair of mounting brackets 53; the bearing plate 51 is fixedly arranged between one of the pairs of clamping seats 44, and an adjustment slot is penetrated through the middle of the bearing plate 51. The second electric slide rail 52 is fixedly arranged in the middle of the upper wall of the bearing plate 51, and the second moving seat on the second electric slide rail 52 is movably inserted into the adjustment slot. Both of the pair of mounting brackets 53 are of a portal structure. The first mounting bracket 53 is fixedly arranged on the lower wall of the front end of the bearing plate 51, and the second mounting bracket 53 is fixedly arranged on the second electric slide rail 52 and moves back and forth; the bearing plate 51 is fixed on the clamping seat 44 for installation, the bearing plate 51 is driven by the first hydraulic cylinder 43 to lift and lower, the bearing plate 51 is driven by the first electric slide rail 42 to move left and right, and the mounting brackets 53 are driven by the second electric slide rail 52 to move relatively for clamping.

[0022] Further, the lifting structure 6 is used to apply force to clamp the workpiece and lift the lower wall of the workpiece to bear force. The lifting structures 6 are respectively fixedly arranged at both ends of the mounting frame 53 and are symmetric with each other; the lifting structure 6 includes a pair of clamping arms 60, a plurality of first rotating arms 61, a plurality of clamping wheels 62, a supporting arm 63, a pair of shaft arms 64, a shaft rod 65, a pair of gears 66, a bearing seat 67, a second hydraulic cylinder 68 and a rack 69; both of the pair of clamping arms 60 are L-shaped. One ends of the pair of clamping arms 60 are respectively fixedly clamped on the left and right sides of one end of the mounting frame 53. One ends of the plurality of first rotating arms 61 are respectively fixedly arranged on the side walls of the clamping arms 60 along an arc, and the first rotating arms 61 are symmetrically arranged on both sides of the clamping arms 60. A plurality of clamping wheels 62 are respectively movably arranged on the other ends of the first rotating arms 61, and the clamping wheels 62 are located between the clamping arms 60. The supporting arm 63 is an arc-shaped structure, and the inner side wall of the inner ring of the supporting arm 63 is provided with teeth along an arc. Wheel grooves 11 are respectively formed in the middle parts of the left and right side walls of the supporting arm 63. The supporting arm 63 is movably installed between the plurality of clamping wheels 62, and the wheel grooves 11 are sleeved on the clamping wheels 62. A pair of shaft arms 64 are respectively symmetrically arranged on the opposite side walls of the clamping arms 60, and the shaft arms 64 are close to the bottom ends of the clamping arms 60. Both ends of the shaft rod 65 respectively movably penetrate through the shaft arms 64. A pair of gears 66 are fixedly sleeved on the shaft rod 65, and one of the gears 66 is located between the first rotating arms 61. One of the gears 66 meshes with the supporting arm 63. One end of the bearing seat 67 is fixedly arranged on the side wall of one end of one of the clamping arms 60, and the other end of the bearing seat 67 is located above the gear 66. One end of the second hydraulic cylinder 68 is fixedly arranged on the lower wall of the other end of the bearing seat 67. One end of the rack 69 is fixedly arranged on the telescopic end of the second hydraulic cylinder 68, and the other end of the rack 69 meshes with the other gear 66; the second hydraulic cylinder 68 on the bearing seat 67 drives the rack 69 to descend. The rack 69 drives one of the gears 66 to rotate, so that both of the two gears 66 rotate on the shaft arms 64. Furthermore, the meshing of the gear 66 and the supporting arm 63 drives the supporting arm 63 to rotate along an arc by means of the limit of the clamping wheels 62 in the wheel grooves 11, so that one end of the supporting arm 63 can be located below or above the other end of the clamping arm 60. A third hydraulic cylinder 7 is arranged on the inner side wall of the bottom end of the supporting arm 63. A first supporting roller 8 is movably arranged on the third hydraulic cylinder 7. The first supporting roller 8 is used for the left and right movement of the workpiece to prevent friction when the workpiece is lifted to bear force. The bottom end of the supporting arm 63 is located above or below the other end of the clamping arm 60 and is used for accommodating or rotating and lifting the workpiece.

[0023] As a preferred solution, further, a pair of second rotating arms 9 are obliquely installed on the bottom end of the supporting arm 63, and a second supporting roller 10 is movably arranged between the other ends of the second rotating arms 9. The second supporting roller 10 is used for the supporting arm 63 to rotate to the lower wall of the workpiece and apply force to move by means of the second supporting roller 10 to prevent friction. The rotation direction of the second supporting roller 10 is perpendicular to the rotation direction of the first supporting roller 8 and is used to realize the rotation in two directions according to design requirements, and their functions are different.

[0024] The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and the specific work is as follows.

[0025] Step 1. The device is stably set on the ground through the base 1. After the device is powered on, it can drive the device to fix the mold workpiece and perform welding processing. Step 2. First, place mold A and mold B on the base 1 respectively through a cart or other tools, and between the brackets 41 in the moving structure 4, and place the workpiece corresponding to the clamping arm 60. Step 3. Drive the first hydraulic cylinder 43 to drive the clamping structure 5 fixed by the clamping seat 44 to descend, that is, the clamping seat 44 drives the bearing plate 51 to descend, and the bearing plate 51 drives the mounting brackets 53 symmetrically arranged on the electric slide rail to descend, and finally drives the lifting structures 6 respectively arranged at both ends of the mounting bracket 53 to descend. The lifting structures 6 at the front and rear ends of the second electric slide rail 52 are located on the front and rear sides of the workpiece. Then drive the second electric slide rail 52 to drive the mounting bracket 53 to move relatively, and the corresponding lifting structures 6 can move relatively, and clamp the front and rear sides of the workpiece with the clamping arm 60. Step 4. Secondly, control the first hydraulic cylinder 43 to contract to clamp the workpiece and lift it to a certain height, and drive the second hydraulic cylinder 68 on the bearing seat 67 to extend. The second hydraulic cylinder 68 drives the rack 69 to descend. With the engagement of the rack 69 and the gear 66, the gear 66 is driven to rotate on the shaft arm 64 by the shaft rod 65. Furthermore, the gear 66 between the shaft arms 64 is engaged with the support arm 63, driving the support arm 63 to be limited by the clamping wheel 62 on the first round arm 61 embedded in the wheel groove 11, and the support arm 63 rotates on the clamping wheel 62. Since the support arm 63 is arc-shaped, the support arm 63 rotates and passes the end with the second round arm 9 and the second roller 10 under the bottom end of the clamping arm 60 and is located under the workpiece, and jacks up the workpiece. As the support arm 63 rotates, the second roller 10 contacts the lower wall to prevent wear. When the workpiece is lifted by the second roller 10, the third hydraulic cylinder 7 can be driven to drive the first roller 8 to jack up the workpiece again. At this time, the workpiece can be adjusted horizontally left and right along the first electric slide rail 42 by a manual pusher according to requirements. After adjustment, it is clamped and fixed by the clamping arm 60 again. Step 5. According to the same principle as described in Step 4 above, after both mold A and mold B are clamped and fixed, the first electric slide rail 42 can be used to drive the clamping structure 5 and the workpiece to move relatively for stable contact docking, and finally the welding torch 3 is controlled by the robotic arm main body 2 to weld the upper and lower walls of the mold. Step 6. After the mold A and the mold B are welded and butt-jointed, if it is necessary to weld the mold C, when the mold C is welded to the mold A, support and slack the welded mold A and mold B with the help of the first idler 8 as described above. Move the mold A towards the lifting structure 6 fixed to the mold B with the help of the first idler 8, vacate the lifting structure 6 where the original mold A was fixed, and then place the mold C for clamping, lifting, moving and correcting, clamping and fixing, and relative movement for butt welding.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold assembly welding device, characterized in that: The invention comprises a base (1), a mechanical arm body (2), a welding gun (3), a moving structure (4), a clamping structure (5) and a plurality of supporting structures (6); the mechanical arm body (2) is fixedly arranged on the upper wall of the rear end of the base (1) and is located in the middle part; the welding gun (3) is fixedly arranged on the mechanical arm body (2); the moving structure (4) is fixedly arranged in the middle part of the upper wall of the base (1) and is located in the front side of the mechanical arm body (2); the clamping structure (5) is fixedly arranged on the moving structure (4); and the plurality of supporting structures (6) are symmetrically arranged on the clamping structure (5); The robot arm body (2) is used to drive the welding gun (3) to perform automatic welding, the moving structure (4) is used to control the left and right movement of the workpiece, the clamping structure (5) is used to apply force to drive the supporting structure (6) to move relatively for clamping, and the supporting structure (6) is used to apply force to the workpiece to clamp it and to support the lower wall of the workpiece to bear force.

2. The injection mold assembly welding device according to claim 1, characterized in that: The moving structure (4) comprises a pair of brackets (41), a pair of first electric slide rails (42), two pairs of first hydraulic cylinders (43) and two pairs of clamping seats (44); One end of a pair of the brackets (41) is symmetrically arranged on the upper walls of the left and right ends of the base (1), a pair of the first electric slide rails (42) are symmetrically arranged between the top ends of the brackets (41) and are relatively parallel, a pair of the first electric slide rails (42) are symmetrically arranged with first movable seats that can move relatively, one end of the two pairs of the first hydraulic cylinders (43) are fixedly arranged on the first movable seats of the first electric slide rails (42), and the two pairs of the clamping seats (44) are symmetrically arranged on the telescopic ends of the first hydraulic cylinders (43).

3. The injection mold assembly welding device according to claim 2, characterized in that: The clamping structure (5) comprises a pair of clamping assemblies, the pair of clamping assemblies are symmetrically arranged between one pair of clamping seats (44), and the clamping assemblies are symmetrically located at the left and right ends of the first hydraulic cylinder (43); The clamping assembly comprises a bearing plate (51), a second electric slide rail (52) and a pair of mounting frames (53); the bearing plate (51) is fixedly arranged between one of the pair of clamping seats (44), and a positioning groove is arranged through the middle of the bearing plate (51); the second electric slide rail (52) is fixedly arranged in the middle of the upper wall of the bearing plate (51), and the second movable seat on the second electric slide rail (52) is movably inserted in the positioning groove; the pair of mounting frames (53) are both door-type structures, wherein the first mounting frame (53) is fixedly arranged on the lower wall of the front end of the bearing plate (51), and the second mounting frame (53) is fixedly arranged on the second electric slide rail (52) and moves forward and backward.

4. The injection mold assembly welding device according to claim 3, characterized in that: The plurality of supporting structures (6) are respectively fixedly arranged on two ends of the mounting frame (53) and are symmetrical to each other; The supporting structure (6) comprises a pair of clamping arms (60), a plurality of first wheel arms (61), a plurality of clamping wheels (62), a supporting arm (63), a pair of shaft arms (64), a shaft rod (65), a pair of gears (66), a bearing seat (67), a second hydraulic cylinder (68) and a rack (69); The pair of clamp arms (60) are both L-shaped, one end of the pair of clamp arms (60) is fixedly clamped on the left and right sides of one end of the mounting frame (53), one end of a plurality of first wheel arms (61) is fixedly arranged on the side wall of the clamp arm (60) along an arc, and the first wheel arms (61) are symmetrically located on both sides of the clamp arm (60), a plurality of clamp wheels (62) are movably arranged on the other end of the first wheel arm (61), and the clamp wheels (62) are located between the clamp arms (60), the support arm (63) is an arc structure, and the inner ring side wall of the support arm (63) is provided with teeth along the arc, the middle part of the left and right side walls of the support arm (63) is provided with wheel grooves (11), the support arm (63) is movably embedded between the plurality of clamp wheels (62), and the wheel grooves (11) are sleeved on the clamp wheels (62), and the pair of shaft arms (64) are respectively The two ends of the shaft rod (65) are symmetrically arranged on opposite side walls of the clamp arm (60), and the shaft arm (64) is close to the bottom end of the clamp arm (60). The two ends of the shaft rod (65) are respectively movable and penetrate the shaft arm (64). A pair of gears (66) are fixedly sleeved on the shaft rod (65), and one of the gears (66) is located between the first wheel arms (61). One of the gears (66) is engaged with the supporting arm (63). One end of the bearing seat (67) is fixedly arranged on the side wall of one end of one of the clamp arms (60), and the other end of the bearing seat (67) is located above the gear (66). One end of the second hydraulic cylinder (68) is fixedly arranged on the lower wall of the other end of the bearing seat (67). One end of the rack (69) is fixedly arranged on the telescopic end of the second hydraulic cylinder (68), and the other end of the rack (69) is engaged with another gear (66).

5. The injection mold assembly welding device according to claim 4, characterized in that: A third hydraulic cylinder (7) is arranged on the inner ring side wall of the bottom end of the supporting arm (63), and a first supporting roller (8) is movably arranged on the third hydraulic cylinder (7), and the first supporting roller (8) is used for moving the workpiece left and right.

6. The injection mold assembly welding device according to claim 5, characterized in that: A pair of second wheel arms (9) are obliquely mounted on the bottom end of the supporting arm (63), and a second roller (10) is movably arranged between the other ends of the second wheel arms (9). The second roller (10) is used for rotating the supporting arm (63) to the lower wall of the workpiece and moving with the help of the force applied by the second roller (10) to prevent friction.

7. The injection mold assembly welding device according to claim 6, characterized in that: The rotation direction of the second roller (10) is perpendicular to the rotation direction of the first roller (8).

8. The injection mold assembly welding device according to claim 7, characterized in that: The bottom end of the supporting arm (63) is located above or below the other end of the clamping arm (60).

Images