A fixture and method for mold frame milling

Abstract

The present invention relates to the technical field of mold frame manufacturing equipment, and specifically discloses a fixture and method for mold frame milling processing, including a rotating structure, an adjusting structure and a gear structure, wherein the adjusting structure is fixedly arranged on the rotating structure, and the gear structure is detachably arranged on the adjusting structure, and the gear structure can be installed in four groups. The present invention has a simple structure and is easy to operate and use; mold frames of different sizes can be adjusted for use; a first clamp and a second clamp can be used to clamp up to four mold frames, and after adjusting according to the length and width requirements, the mold frames can be butt-jointed end to end, which can not only increase the stability during the milling process, but also enable milling operations on multiple mold frames at one time.

Description

Technical Field

[0001] The invention relates to the technical field of mold frame manufacturing equipment, and in particular to a fixture and method for mold frame milling processing. Background Art

[0002] The mold frame milling device is usually a precision mechanical equipment dedicated to mold production, used to process various parts of the mold;

[0003] In modern industrial production, high-precision and high-efficiency processing equipment is essential to improve productivity and product quality. Especially in the metal processing and mold manufacturing industries, the precise clamping and position adjustment of the mold frame during the milling process directly affects the precision and consistency of the final product. Although the existing processing system can achieve basic clamping and position adjustment functions, it still has some limitations.

[0004] Traditional mold support systems mainly rely on manual adjustment mechanisms to adapt to workpieces of different sizes and shapes. This method is not only inefficient, but also difficult to achieve high-precision adjustment. In addition, the complexity and labor intensity of manual operation also greatly limit production efficiency. Although certain automation elements have been introduced, such as basic hydraulic or electric control systems, these systems generally cannot provide sufficient flexibility and precise control to meet more complex or special processing tasks. In view of this, a fixture and method for mold milling are proposed. Summary of the invention

[0005] The object of the present invention is to provide a fixture and method for mold frame milling processing to solve the technical problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a fixture for mold frame milling processing, including a rotating structure, an adjusting structure and a gear structure, wherein the adjusting structure is fixedly mounted on the rotating structure, the gear structure is detachably mounted on the adjusting structure, and the gear structure can be installed in four groups.

[0007] Preferably, the rotating structure includes a support column, a first stable seat, a second stable seat, a motor, a cover body and a universal shaft assembly; a mounting groove is provided in the middle portion of the upper wall at the top of the support column, and a first fixing ear is symmetrically provided at the top end, the first stable seat is fixedly sleeved on the bottom of the support column, a first bearing is provided in the middle portion of the second stable seat, the second stable seat is fixedly sleeved on the bottom of the support column and is located above the first stable seat, the second stable seat can rotate, and two flip frames are provided on the second stable seat, the motor is fixedly arranged in the mounting groove at the top of the support column, and two pairs of force blocks are provided at the motor driving end, the cover body can be detachably buckled on the top of the support column, and is connected and fixed to the first fixing ear by a first bolt, a second bearing is embedded in the middle portion of the cover body, both ends of the universal shaft assembly can be flipped, and a sleeve is provided at the bottom of the universal shaft assembly, force application grooves corresponding to the force application blocks are opened at the bottom of the sleeve, the universal shaft assembly is fixed through the sleeve and passes through the second bearing, and is movably sleeved on the motor driving end, and the force application groove is movably sleeved on the force application block.

[0008] Preferably, the adjustment structure includes a slide, two pairs of first hydraulic cylinders, two pairs of first clamps, a pair of second hydraulic cylinders and two pairs of connecting rods; the slide is a cross-shaped structure and has four ends, the middle parts of the four ends of the slide are provided with adjustment grooves, and the middle parts of the side walls of the four ends are provided with sockets, the slide is fixedly arranged on the top of the universal shaft assembly, and the four ends of the slide are provided with locking edges near the bottom side walls, the two pairs of the first hydraulic cylinders are respectively fixedly arranged on the middle upper wall of the slide, and are respectively arranged relatively along the four ends, the two pairs of the first clamps are respectively detachably arranged on the telescopic ends of the first hydraulic cylinders by second bolts, and are horizontally located above the four ends of the slide, the middle parts of the upper walls of the first clamps are provided with sockets, one end of a pair of the second hydraulic cylinders is respectively movably connected to the flip frame on the second stable seat, and the other end is respectively tilted and movably connected to two adjacent lower walls of the slide, the two pairs of the connecting rods are both door-type mold frame structures, and one end of the two pairs of the connecting rods can be detachably inserted into the sockets of the first clamps.

[0009] Preferably, the gear structure includes a slide seat, a second clamping plate, a collar, an extrusion seat and a tightening unit; the slide seat is an H-shaped structure, the slide seat can be movably inserted into one end of the slide, the front and rear side walls at the upper and lower ends of the slide seat are provided with mounting threaded holes, the second clamping plate is fixedly welded to the middle part of the upper wall of one end of the slide seat, the second clamping plate is a convex structure, and the second clamping plate can correspond to the first clamping plate, the collar is fixedly welded to the top side wall of the second clamping plate, and the collar can be movably sleeved on the other end of the connecting rod, The extrusion seat is a concave structure, and the two ends of the extrusion seat are detachably mounted on the upper and lower ends of the front side of the slide seat by third bolts, and the extrusion seat is matched with the slide seat. An extrusion port is opened in the middle of the front side wall of the extrusion seat, and a pair of linkage ports are opened on the left and right sides of the extrusion port. The middle of the linkage port is opened with movable grooves that penetrate each other, and the middle of the left and right sides of the extrusion seat is opened with installation ports that communicate with the linkage ports. The tightening unit is detachably mounted on the extrusion seat, and the tightening unit can fix the extrusion seat on the locking edge of the slide.

[0010] Preferably, the tightening unit comprises a pair of limit blocks, a tensioning spring, a driving rod, a top block, a moving rod, a pair of locking washers and a pair of assembling screws; two ends of the pair of limit blocks are respectively movably inserted in the linkage opening, and a through axial hole is provided in the middle of the limit blocks, one end of the tensioning spring is respectively fixedly connected to the lower wall in the linkage opening, and the other end is respectively fixedly connected to the lower walls at both ends of the limit blocks, the two ends of the driving rod are respectively movably passed through the extrusion opening and the linkage opening, and the two ends of the driving rod are respectively movably inserted in the limit blocks, the middle of both ends of the driving rod are respectively provided with assembly threaded holes, and three first fixing holes are provided on the outer sides of the assembly threaded holes, the top block is an arc-shaped structure, and one end of the top block can be detachably mounted on the driving The middle part of the moving rod is located in the extrusion opening, and the other end of the top block can be force-fitted to the upper wall of the lock edge. The two ends of the moving rod are respectively movably inserted in one of the pairs of linkage openings, and are respectively detachably connected to the two ends of the driving rod. The side walls of the moving rod are both L-shaped structures, and a pair of the locking washers are both ring structures, and the side walls are provided with three fixing rods corresponding to the first fixing holes. A pair of the locking washers are respectively detachably arranged on the two ends of the moving rod, and the fixing rods are respectively movably passed through the two ends of the moving rod and inserted into the first fixing holes. A pair of the assembling screws can be installed through the mounting openings, and a pair of the assembling screws are respectively movably passed through the locking washers and the two ends of the moving rod, and are respectively movably screwed into the two ends of the driving rod.

[0011] Preferably, the moving rod can drive the driving rod to rotate, and can flip the top block and press it against the upper wall of the lock edge.

[0012] Preferably, during the flipping process of the top block, the driving rod and the limit block are forced to move upward and pull the tension spring.

[0013] Preferably, the four ends of the slide can be equipped with extension frames, and the extension frames have the same structure as the four ends of the slide, and a pair of plug plates corresponding to the sockets are provided on the side wall of one end of the extension frame.

[0014] Preferably, in order to better stabilize the equipment, the first stabilizing seat can be fixed to the ground by means of expansion bolts.

[0015] Preferably, in order to fit different mold frames, the slide can be moved and adjusted on the slide, and the slide can be connected to the first clamping plate on the first hydraulic cylinder by means of a connecting rod to electrically control the position.

[0016] The present invention provides a fixture and method for mold frame milling, which has the following beneficial effects:

[0017] 1. The present invention has a simple structure and is easy to operate and use; it can realize the adjustment and use of mold frames of different sizes.

[0018] 2. The present invention can clamp up to four mold frames with the help of the first clamping plate and the second clamping plate, and after adjusting the length and width requirements, the mold frames are butted end to end, which can not only increase the stability during the milling process, but also perform milling operations on multiple mold frames at one time.

[0019] 3. The present invention can also adjust the inclination of the fixed mold frame, so as to facilitate the adjustment of the milling position of the mold frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the assembly structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the first split structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the second split structure of the present invention.

[0023] Figure 4 for Figure 3 A partial enlargement shows a schematic diagram of the structure.

[0024] Figure 5 For the present invention Figure 2 Schematic diagram of the local enlarged structure at A in the figure.

[0025] Figure 6 For the present invention Figure 2 Schematic diagram of the local enlarged structure at point B in the figure.

[0026] Figure 7 For the present invention Figure 3 Schematic diagram of the local enlarged structure at point C in the figure.

[0027] Figure 8 For the present invention Figure 3 Schematic diagram of the local enlarged structure at D in the figure.

[0028] Fig. 9 For the present invention Figure 1 Schematic diagram of the local enlarged structure at E in the figure.

[0029] Fig.10 For the present invention Figure 1 Schematic diagram of the local enlarged structure at F in the figure.

[0030] In the figure: 1. rotating structure; 11. supporting column; 12. first stable seat; 13. second stable seat; 14. motor; 15. cover body; 16. universal joint shaft assembly; 2. adjusting structure; 21. slide; 22. first hydraulic cylinder; 23. first clamping plate; 24. second hydraulic cylinder; 25. connecting rod; 3. gear structure; 31. slide; 32. second clamping plate; 33. sleeve ring; 34. extrusion seat; 35. tightening unit; 351. limit block; 352. tension spring; 353. driving rod; 354. lifting block; 355. moving rod; 356. locking pad; 357. assembling screw; 4. force block; 5. force groove; 6. adjusting groove; 7. socket; 8. locking edge; 91. extrusion port; 92. linkage port; 93. moving groove; 94. extension frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-10 The present invention provides a technical solution: a fixture for mold frame milling processing, including a rotating structure 1, an adjusting structure 2 and a gear structure 3, wherein the adjusting structure 2 is fixedly mounted on the rotating structure 1, and the gear structure 3 is detachably mounted on the adjusting structure 2, and the gear structure 3 can be installed in four groups.

[0033] As a preferred embodiment, further, the rotating structure 1 includes a support column 11, a first stable seat 12, a second stable seat 13, a motor 14, a cover body 15 and a universal shaft assembly 16; a mounting groove is provided in the middle of the upper wall of the top end of the support column 11, and a first fixing ear is symmetrically provided at the top end, the first stable seat 12 is fixedly sleeved on the bottom of the support column 11, a first bearing is provided in the middle of the second stable seat 13, the second stable seat 13 is fixedly sleeved on the bottom of the support column 11, and is located above the first stable seat 12, the second stable seat 13 can rotate, and two flip frames are provided on the second stable seat 13, the motor The motor 14 is fixedly placed in the mounting groove at the top of the support column 11, and two pairs of force blocks 4 are provided at the driving end of the motor 14. The cover body 15 is detachably buckled on the top of the support column 11, and is connected and fixed to the first fixing ear by a first bolt. A second bearing is embedded in the middle of the cover body 15. Both ends of the universal joint shaft assembly 16 can be flipped, and a sleeve is provided at the bottom of the universal joint shaft assembly 16. Force grooves 5 corresponding to the force blocks 4 are opened at the bottom of the sleeve. The universal joint shaft assembly 16 is fixed through the sleeve and passes through the second bearing, and is movably sleeved on the driving end of the motor 14. The force groove 5 is movably sleeved on the force block 4.

[0034] As a preferred solution, further, the adjustment structure 2 includes a slide 21, two pairs of first hydraulic cylinders 22, two pairs of first clamps 23, a pair of second hydraulic cylinders 24 and two pairs of connecting rods 25; the slide 21 is a cross-shaped structure, and it has four ends, the middle of the four ends of the slide 21 are all provided with adjustment slots 6, and the middle of the side walls of the four ends are all provided with sockets 7, the slide 21 is fixedly arranged on the top of the universal shaft assembly 16, the four ends of the slide 21 are all provided with locking edges 8 near the bottom side walls, the two pairs of the first hydraulic cylinders 22 are respectively fixedly arranged on the upper wall of the middle part of the slide 21, and They are arranged relatively along the four ends respectively, and the two pairs of the first clamping plates 23 are detachably mounted on the telescopic ends of the first hydraulic cylinder 22 by second bolts respectively, and are horizontally located above the four ends of the slide 21. A plug hole is opened in the middle of the upper wall of the first clamping plate 23. One end of a pair of the second hydraulic cylinders 24 is movably connected to the flip frame on the second stable seat 13, and the other end is movably connected to the lower walls of two adjacent ends of the slide 21 at an angle. The two pairs of the connecting rods 25 are both door-type mold frame structures, and one end of the two pairs of the connecting rods 25 are detachably inserted into the plug holes of the first clamping plate 23 respectively.

[0035] As a preferred solution, further, the gear structure 3 includes a slide 31, a second clamping plate 32, a collar 33, an extrusion seat 34 and a tightening unit 35; the slide 31 is an H-shaped structure, and the slide 31 can be movably inserted into one end of the slide 21. The front and rear side walls of the upper and lower ends of the slide 31 are provided with mounting threaded holes. The second clamping plate 32 is fixedly welded to the middle part of the upper wall of one end of the slide 31. The second clamping plate 32 is a convex structure, and the second clamping plate 32 can correspond to the first clamping plate 23. The collar 33 is fixedly welded to the top side wall of the second clamping plate 32, and the collar 33 can be movably sleeved on the other end of the connecting rod 25 The extrusion seat 34 is a concave structure, and the two ends of the extrusion seat 34 are detachably mounted on the upper and lower ends of the front side of the slide 31 by third bolts, and the extrusion seat 34 is matched with the slide 31. An extrusion port 91 is provided in the middle of the front side wall of the extrusion seat 34, and a pair of linkage ports 92 are provided on the left and right sides of the extrusion port 91. The linkage ports 92 are provided with movable grooves 93 that penetrate each other in the middle. The middle of the left and right sides of the extrusion seat 34 are provided with installation ports that communicate with the linkage ports 92. The tightening unit 35 is detachably mounted on the extrusion seat 34, and the tightening unit 35 can fix the extrusion seat 34 on the locking edge 8 of the slide 21.

[0036] As a preferred solution, further, the tensioning unit 35 includes a pair of limit blocks 351, a tensioning spring 352, a driving rod 353, a top block 354, a moving rod 355, a pair of locking washers 356 and a pair of assembly screws 357; the two ends of the pair of limit blocks 351 are respectively movably inserted into the linkage port 92, and the middle of the limit blocks 351 are provided with a through axial hole, one end of the tensioning spring 352 is respectively fixedly connected to the lower wall inside the linkage port 92, and the other end is respectively fixedly connected to the lower wall at both ends of the limit block 351, the two ends of the driving rod 353 are respectively movably passed through the extrusion port 91 and the linkage port 92, and the two ends of the driving rod 353 are respectively movably inserted into the limit block 351, the middle of both ends of the driving rod 353 are provided with assembly threaded holes, and three first fixing holes are provided on the outer side of the assembly threaded holes, the top block 354 is an arc structure, and the top block 35 One end of the said top block 354 can be detachably mounted on the middle part of the driving rod 353 and is located in the extrusion opening 91. The other end of the said top block 354 can be forcefully fitted on the upper wall of the locking edge 8. The two ends of the said moving rod 355 are respectively movably inserted in one of the pair of linkage openings 92 and are respectively detachably connected to the two ends of the driving rod 353. The side walls of the said moving rod 355 are both L-shaped structures. The pair of said locking washers 356 are both annular structures, and the side walls are provided with three fixing rods corresponding to the first fixing holes. The pair of said locking washers 356 are respectively detachably mounted on the two ends of the moving rod 355, and the fixing rods are respectively movably passed through the two ends of the moving rod 355 and inserted in the first fixing holes. The pair of said assembling screws 357 can be respectively installed through the installation openings. The pair of said assembling screws 357 are respectively movably passed through the locking washers 356 and the two ends of the moving rod 355, and are respectively movably screwed into the two ends of the driving rod 353.

[0037] As a preferred solution, further, the moving rod 355 can drive the driving rod 353 to rotate, and can flip the top block 354 and press it against the upper wall of the locking edge 8.

[0038] As a preferred solution, further, during the flipping process of the top block 354, the driving rod 353 and the limit block 351 will be forced to move upward and pull the tension spring 352, and the top block 354 and the locking edge 8 contact wall surface are a planar structure.

[0039] As a preferred solution, further, extension frames 94 can be installed at all four ends of the slide 21, and the extension frames 94 have the same structure as the four ends of the slide 21, and a pair of plug plates corresponding to the sockets 7 are provided on the side walls of one end of the extension frame 94, which are used to extend the use length of the slide 21 and increase the adjustment range according to the size of the mold frame, and are docked and installed with the help of the plug plates.

[0040] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0041] S1. The support column 11 in the rotating structure 1 can be stably fixed on the milling equipment through the first stable seat 12; according to the width and length of the mold frame, the positions of the four groups of gear structures 3 on the slide 21 in the adjustment structure 2 are adjusted respectively, and the extension frame 94 can also be installed through the socket 7 to lengthen and increase the adjustment range, so as to realize the position of the slide 31 moving in the adjustment slot 6 of the slide 21 or the extension frame 94;

[0042] S2. The length and width of the mold frame can be adjusted by connecting one end of the connecting rod 25 to the first clamping plate 23, and the other end is inserted into the sleeve ring 33 to drive the first hydraulic cylinder 22 to electrically adjust the position of the slide 31, that is, to achieve movement and adjustment according to the length and width of the mold frame;

[0043] S3, then the pressing unit 35 on the extrusion seat 34 is driven to limit and fix the slide 31; that is, the moving rod 355 is turned downward, so that the moving rod 355 is forced to pass through the locking pad 356 and the assembly bolt, and the driving rod 353 is used to rotate in the two limiting blocks 351. Since the limiting block 351 cannot rotate in the linkage opening 92, the pressing block 354 is driven to rotate in the extrusion opening 91, so that one end of the pressing block 354 is pressed against the upper wall of the locking edge 8 on the slide 21 or the extension frame 94, and the limiting block 351 is moved upward to stretch the tensioning spring (352), and then through the force of the tensioning spring 352, the pressing block 354 is pressed against the locking edge 8 to achieve extrusion locking, and the slide 31 is limited in the corresponding position, and the position can finally be adjusted according to the length and width of the mold frame;

[0044] S4, placing the shell mold frame on the upper walls of the four ends of the slide 21, and driving the first hydraulic cylinder 22 to extend, clamping the mold frame between the first clamping plate 23 and the second clamping plate 32 for position limiting and fixing, thereby achieving fixed position limiting and relative splicing of multiple mold frames; after splicing, the mold frames can enhance the stability during the milling process, and after splicing, the milling equipment can be used for milling operation;

[0045] S5. During the processing, the motor 14 is driven to drive the universal joint assembly 16 to rotate with the help of the cover plate through the engagement of the force block 4 and the force groove 5, so as to drive the slide 21 and the spliced ​​mold frame to rotate, and through the connection of the second hydraulic cylinder 24, the second hydraulic cylinder 24 is driven to rotate on the support column 11 through the second stable seat 13 to adjust the direction; the two second hydraulic cylinders 24 can also be driven to extend and retract respectively, so as to adjust the slide 21 to tilt in different directions and angles with the help of the universal joint assembly 16, so as to facilitate the milling operation of the mold frame.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for mold frame milling, characterized in that: It comprises a rotating structure (1), an adjusting structure (2) and a gear structure (3), wherein the adjusting structure (2) is fixedly mounted on the rotating structure (1), and the gear structure (3) is detachably mounted on the adjusting structure (2), and the gear structure (3) is installed in four groups; The rotating structure (1) comprises a support column (11), a first stabilizing seat (12), a second stabilizing seat (13), a motor (14), a cover body (15), and a universal shaft assembly (16); The support column (11) has a mounting groove in the middle of the upper wall at the top, and a first fixing ear is symmetrically arranged at the top. The first stabilizing seat (12) is fixedly sleeved on the bottom of the support column (11). The second stabilizing seat (13) has a first bearing in the middle. The second stabilizing seat (13) is fixedly sleeved on the bottom of the support column (11) and is located above the first stabilizing seat (12). The second stabilizing seat (13) is rotatable, and two flip frames are arranged on the second stabilizing seat (13). The motor (14) is fixedly arranged in the mounting groove at the top of the support column (11), and the driving end of the motor (14) is provided with Two pairs of force blocks (4) are arranged, the cover body (15) is detachably buckled on the top of the support column (11) and is connected and fixed to the first fixing ear by a first bolt, a second bearing is embedded in the middle of the cover body (15), both ends of the universal shaft assembly (16) can be turned over, and a sleeve is arranged at the bottom of the universal shaft assembly (16), and force grooves (5) corresponding to the force blocks (4) are respectively opened at the bottom of the sleeve, the universal shaft assembly (16) is fixed through the sleeve and penetrates the second bearing, and is movably sleeved on the driving end of the motor (14), and the force groove (5) is movably sleeved on the force block (4); The adjustment structure (2) comprises a slide (21), two pairs of first hydraulic cylinders (22), two pairs of first clamping plates (23), a pair of second hydraulic cylinders (24) and two pairs of connecting rods (25); The slide (21) is a cross-shaped structure and has four ends. The middle of the four ends of the slide (21) are all provided with adjustment slots (6), and the middle of the side walls of the four ends are all provided with sockets (7). The slide (21) is fixedly arranged on the top of the universal shaft assembly (16). The four ends of the slide (21) are all provided with locking edges (8) near the bottom side walls. Two pairs of the first hydraulic cylinders (22) are respectively fixedly arranged on the middle upper wall of the slide (21) and are respectively arranged opposite to each other along the four ends. The two pairs of the first clamping plates (23) are respectively connected by second bolts. The first clamping plate (23) is provided with a plug hole in the middle of the upper wall, and the second hydraulic cylinder (24) is movably connected to the flip frame on the second stable seat (13) at one end, and the other end is movably connected to the lower wall of two adjacent ends of the slide (21) at an angle, and the two pairs of connecting rods (25) are both door-type mold frame structures, and the two pairs of connecting rods (25) are detachably inserted into the plug hole of the first clamping plate (23) at one end; The extension frame can be installed at all four ends of the slide, and the extension frame has the same structure as the four ends of the slide (21), and a pair of plug plates corresponding to the sockets are arranged on the side wall of one end of the extension frame.

2. A fixture for mold frame milling according to claim 1, characterized in that: The gear structure (3) comprises a sliding seat (31), a second clamping plate (32), a collar (33), an extrusion seat (34) and a tightening unit (35); The slide seat (31) is an H-shaped structure. The slide seat (31) can be movably inserted into one end of the slide frame (21). The front and rear side walls of the upper and lower ends of the slide seat (31) are provided with mounting threaded holes. The second clamping plate (32) is fixedly welded to the middle part of the upper wall of one end of the slide seat (31). The second clamping plate (32) is a convex structure, and the second clamping plate (32) can correspond to the first clamping plate (23). The collar (33) is fixedly welded to the top side wall of the second clamping plate (32). The collar (33) can be movably sleeved on the other end of the connecting rod (25). The extrusion seat (34) is a concave structure. The two ends of the extrusion seat (34) are respectively connected The third bolt is detachably mounted on the upper and lower ends of the front side of the slide seat (31), and the extrusion seat (34) is matched with the slide seat (31). An extrusion opening (91) is provided in the middle of the front side wall of the extrusion seat (34), and a pair of linkage openings (92) are provided on the left and right sides of the extrusion opening (91). The linkage openings (92) are provided in the middle of each other with movable grooves (93) that penetrate each other. The middle of each left and right side of the extrusion seat (34) is provided with installation openings that communicate with the linkage openings (92). The tightening unit (35) is detachably mounted on the extrusion seat (34), and the tightening unit (35) can fix the extrusion seat (34) on the locking edge (8) of the slide frame (21).

3. A fixture for mold frame milling according to claim 2, characterized in that: The tightening unit (35) comprises a pair of limit blocks (351), a tension spring (352), a driving rod (353), a lift block (354), a moving rod (355), a pair of locking washers (356) and a pair of assembly screws (357); The two ends of a pair of limit blocks (351) are movably inserted into the linkage opening (92), and the middle of the limit blocks (351) is provided with a through axial hole. One end of the tension spring (352) is fixedly connected to the lower wall of the linkage opening (92), and the other end is fixedly connected to the lower walls of both ends of the limit blocks (351). The two ends of the drive rod (353) are movably inserted into the extrusion opening (91) and the linkage opening (92), and the two ends of the drive rod (353) are movably inserted into the limit blocks (351). The middle of both ends of the drive rod (353) is provided with an assembly threaded hole, and three first fixing holes are provided outside the assembly threaded hole. The top block (354) is an arc-shaped structure. One end of the top block (354) is detachably sleeved on the middle of the drive rod (353) and is located in the extrusion opening (91). The top block (354) The other end can be forcefully fitted to the upper wall of the lock edge (8), the two ends of the moving rod (355) are respectively movably inserted into one of the pair of linkage openings (92), and are respectively detachably connected to the two ends of the driving rod (353), the side walls of the moving rod (355) are both L-shaped structures, the pair of locking washers (356) are both annular structures, and the side walls are provided with three fixing rods corresponding to the first fixing holes, the pair of locking washers (356) are respectively detachably arranged on the two ends of the moving rod (355), and the fixing rods are respectively movably passed through the two ends of the moving rod (355) and inserted into the first fixing holes, the pair of assembly screws (357) can be respectively installed through the installation openings, the pair of assembly screws (357) are respectively movably passed through the locking washers (356) and the two ends of the moving rod (355), and are respectively movably screwed into the two ends of the driving rod (353).

4. A fixture for mold frame milling according to claim 3, characterized in that: The moving rod (355) can drive the driving rod (353) to rotate, and can flip the top block (354) and press it against the upper wall of the locking edge (8).

5. A fixture for mold frame milling according to claim 4, characterized in that: During the flipping process of the top block (354), the driving rod (353) and the limiting block (351) are forced to move upward and pull the tension spring (352).

6. A fixture for mold frame milling according to claim 5, characterized in that: The extension frame (94) can be installed at all four ends of the slide frame (21), and the extension frame (94) has the same structure as the four ends of the slide frame (21), and a pair of plug plates corresponding to the sockets (7) are provided on the side wall of one end of the extension frame (94).

7. The method for using the fixture for mold frame milling according to claim 6, characterized in that: The following steps are involved: S1. The support column (11) in the rotating structure (1) can be stably fixed on the milling equipment through the first stabilizing seat (12); the positions of the four groups of gear structures (3) on the slide (21) in the adjustment structure (2) are adjusted according to the width and length of the mold frame, and the extension frame (94) can be installed through the socket (7) to lengthen and increase the adjustment range, so as to realize the position of the slide (31) moving in the adjustment slot (6) of the slide (21) or the extension frame (94); S2, the length and width of the mold frame can be adjusted by connecting one end of a connecting rod (25) to the first clamping plate (23), and the other end is inserted into a sleeve ring (33) to drive the first hydraulic cylinder (22) to electrically adjust the position of the slide seat (31), that is, to achieve movement and adjustment according to the length and width of the mold frame; S3, then the pressing unit (35) on the extrusion seat (34) is driven to limit and fix the slide seat (31); that is, the moving rod (355) is flipped downward, so that the moving rod (355) is forced to pass through the locking pad (356) and the assembly bolt, and rotates in the two limit blocks (351) with the help of the driving rod (353). Since the limit blocks (351) cannot rotate in the linkage opening (92), the pressing block (354) is driven to move in the extrusion opening (91). The upper end of the top block (354) is rotated inwardly, so that one end of the top block (354) is pressed against the upper wall of the lock edge (8) on the slide (21) or the extension frame (94) to be stressed, and the limit block (351) is moved upward to stretch the tension spring (352), and then the top block (354) is pressed against the lock edge (8) by the force of the tension spring (352) to achieve extrusion locking, and the slide seat (31) is limited at a corresponding position, so that the position can be finally adjusted according to the length and width of the mold frame; S4, placing the shell mold frame on the upper walls of the four ends of the slide (21), and driving the first hydraulic cylinder (22) to extend, clamping the mold frame between the first clamping plate (23) and the second clamping plate (32) to limit and fix the mold frame, thereby achieving fixed position and relative splicing of multiple mold frames; after the mold frames are spliced, the stability during the milling process can be enhanced, and after the splicing is completed, the milling operation can be performed using the milling equipment; S5. During the processing, the driving motor (14) drives the universal shaft assembly (16) to rotate with the help of the cover plate by means of the force block (4) and the force groove (5), thereby driving the slide (21) and the spliced ​​mold frame to rotate, and through the connection of the second hydraulic cylinder (24), the second hydraulic cylinder (24) is driven to rotate on the support column (11) through the second stable seat (13) to adjust the direction; the two second hydraulic cylinders (24) can also be driven to extend and retract respectively, so as to adjust the slide (21) to tilt in different directions and angles with the help of the universal shaft assembly (16), so as to facilitate the milling operation of the mold frame.

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