Quick die change automatic locking die set

Abstract

This invention relates to the field of mold technology, specifically to a quick mold change automatic locking mold frame, comprising a base plate mechanism and a fixing mechanism. The base plate body is rectangular, with base plate bolt posts extending vertically upward from its four outer corners. Each of the four outer sides of the base plate body has at least two evenly spaced insertion holes, each fitted with a bolt. These bolts connect to the bottom end face of a square iron block, allowing the square iron block to stand vertically on the outer side of the base plate body. The top of the square iron block is connected to the fixing mechanism via the base plate bolt posts. In this invention, the fixing mechanism, including the fixing block, the limiting arc block, and the hexagonal square post, works in concert, allowing for rapid locking / unlocking of the fixing plate and the die body via rotation. This eliminates the traditional cumbersome disassembly and assembly, simplifying the mold change process and significantly reducing mold change time.

Description

Technical Field

[0001] This invention relates to the field of mold technology, specifically to a quick mold change automatic locking mold frame. Background Technology

[0002] Molds are important process equipment in industrial production. Molds can be broadly divided into two parts: the mold core and the mold base. Some working parts of the mold are in direct contact with the finished product. For example, the punch and die of a metal mold are in direct contact with the metal sheet being processed, and the core and cavity of a plastic mold are in direct contact with the finished plastic part. These working parts are called the "mold core". The assembly of parts used to install the working parts (mold core) and other structural parts of the mold, ensure that the working parts of the mold have the correct relative positions during operation, and connect the mold to the machine tool is called the "mold base".

[0003] In response, Chinese patent application number CN202110623840.3 discloses a mold frame, comprising: a first mold frame for mounting a first mold core and a second mold frame for mounting a second mold core; the first mold frame is provided with an injection port that passes through the first mold core and communicates with the mold cavity; the first mold frame is provided with a plurality of first fixing areas, and each first fixing area is provided with a plurality of first fixing holes for fixing the first mold core, the distance from each first fixing hole in a single first fixing area to the injection port is different; the second mold frame is provided with a plurality of second fixing areas, and each second fixing area is provided with a plurality of second fixing holes for fixing the second mold core, the distance from each second fixing hole in a single second fixing area to the corresponding position of the injection port on the second mold frame is different, thereby realizing the basic function of the device.

[0004] The equipment uses a first fixing hole, a second fixing hole, and bolts to fix the first mold core and the second mold core, which allows for the installation and disassembly of the first mold core and the second mold core. However, the locking structure is mostly a single bolt or a simple buckle, which is easily loosened by vibration and pressure, resulting in poor mold closing accuracy. The mold frame replacement relies on a large number of scattered fasteners, the disassembly and assembly steps are complicated, and the mold replacement time is long (small mold frame replacement often takes 20-40 minutes), which reduces production efficiency.

[0005] Therefore, in order to solve the above problems, a quick mold change with automatic locking mold base is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a fast mold changing automatic locking mold frame, in order to solve the problems mentioned in the background art where the equipment locking structure is mostly a single bolt or simple buckle, which is easily loosened by vibration and pressure, resulting in poor mold closing accuracy, mold frame changing relies on a large number of scattered fasteners, the disassembly and assembly steps are complicated, the mold changing time is long (small mold frames often require 20-40 minutes to change molds), and the production efficiency is reduced.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a quick mold changing automatic locking mold frame, comprising a base plate mechanism, a square iron, an unloading mechanism, a fixing mechanism, a concave plate mechanism, a convex plate mechanism, a top plate, and an injection port. The base plate body of the base plate mechanism is rectangular, with base plate bolt posts extending vertically upward from its four outer corners. The base plate body has four outer sides, each side having at least two evenly spaced insertion holes. Bolts are fitted into the insertion holes and connected to the bottom end face of the square iron through the bolts, so that the square iron is vertically erected on the outer side of the base plate body. The top of the square iron is connected to the fixing mechanism through the base plate bolt posts.

[0008] The fixing mechanism includes a fixing plate, an adjusting rail, a limiting arc-shaped block, and a sliding plate. The fixing plate is a rectangular plate with a fixing block integrally formed on its top surface. The fixing block is rectangular and fits the fixing square hole opened on the concave plate body of the concave plate mechanism. An arc-shaped groove is opened in the fixing block. The horizontal end of the arc-shaped groove passes through the two sides of the fixing block, and the vertical end extends into the interior of the fixing plate and communicates with the rotation space of the threaded push rod. One end of the threaded push rod is connected to a hexagonal square column, and the other end is rotatably connected to the interior of the fixing block. The outer wall of the threaded push rod is fitted with a threaded sleeve. Two limiting arc-shaped blocks are set inside the arc-shaped groove and slide along the arc-shaped groove. A spring arc-shaped retraction rod is connected between the two limiting arc-shaped blocks.

[0009] The limiting arc block and the sliding plate are rotatably connected to the connecting shaft. The sliding plate is adapted to be installed in the adjusting rail. The adjusting rail is fixed to the threaded sleeve. Rotating the rotating hexagonal square column drives the threaded push rod, pushes the threaded sleeve to move, and links the limiting arc block to slide along the arc groove.

[0010] The concave plate mechanism includes a concave plate body, a fixed square hole is opened on the top surface of the concave plate body, a limiting slot is opened on the inner wall of the fixed square hole corresponding to the position of the limiting arc block, a first set of holes is also opened on the concave plate body, a guide rod is adapted in the first set of holes, the guide rod is vertically arranged in the concave plate body, and the top end of the guide rod of the concave plate mechanism is hemispherical.

[0011] Preferably, the top plate of the fixing mechanism is fixed by bolts. The top plate is a rectangular plate, and its bottom end is locked to the convex plate body of the convex plate mechanism by the fixing mechanism. An injection port is opened on the top surface of the top plate, and the injection port is connected to the mold cavity. The fixing mechanism is locked to the convex plate body of the convex plate mechanism. A connecting hole and a second through hole are opened on the fixing plate of the fixing mechanism. The connecting hole is a circular hole located on the edge of the fixing plate. The internal thread of the connecting hole is connected to the bottom plate bolt post. The internal sliding connection of the second through hole is connected to the outer wall of the panel pin.

[0012] Preferably, the inner side area of ​​the upper surface of the base plate body has multiple panel bolt columns arranged vertically upward at intervals, the top of the base plate body is set as an unloading mechanism, and the base plate body of the base plate mechanism has a first through hole, which is a circular through hole evenly distributed on the base plate body, for connecting components between the mold frame and external equipment.

[0013] Preferably, the unloading mechanism includes a panel, a limiting sleeve, and a push tube. The panel is a rectangular plate with sliding holes corresponding to the positions of the panel bolt posts. The panel is fitted onto the panel bolt posts through the sliding holes and can slide up and down along the panel bolt posts. The limiting sleeve and the push tube are hollow tubular structures fitted onto the outside of the panel bolt posts.

[0014] Preferably, the top end of the limiting sleeve abuts against the lower surface of the panel, the push tube is sleeved on the outside of the limiting sleeve, and the two can slide relative to each other. A spring is sleeved under the panel bolt post and the push tube.

[0015] Preferably, the convex plate mechanism includes a convex plate body, which is a rectangular block adapted to the concave plate body. It has a cooling water pipe and a cooling tank inside, and the cooling water pipe is connected to the cooling tank. A second set of holes and a guide sleeve are opened on the convex plate body corresponding to the first set of holes and the guide rod position. The guide sleeve is adapted to be fitted onto the guide rod.

[0016] Preferably, the cooling water pipes of the convex plate mechanism extend to the outside of the convex plate body at both ends and are connected to an external cooling system to achieve circulating cooling of the convex plate body.

[0017] Preferably, the upper surface of the unloading mechanism panel is provided with a connecting threaded hole, and a panel pin is connected to the internal thread of the connecting threaded hole. The panel pin slides vertically upward to assist in ejecting the material during unloading.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: Installation of the base plate and square iron of the device of the present invention: The base plate body is placed on the working platform, and the base plate body is fastened to the external support structure by bolts through the base plate bolt column; Bolts are inserted into the insertion holes on the outer side of the base plate body to vertically fix the square iron to the four sides of the base plate body, ensuring that the square iron is vertical and stable.

[0019] Assembly of unloading mechanism: Align the sliding hole of the panel with the panel bolt post and fit it in so that the panel is placed above the base plate body; put the limit sleeve and push tube on the panel bolt post in sequence, so that the top of the limit sleeve is close to the lower surface of the panel; put on the spring, adjust the position, and ensure that the spring can be compressed and reset normally when the panel slides along the panel bolt post.

[0020] Connection between the fixing mechanism and the die: Take the fixing plate and insert its top fixing block into the fixing square hole of the die body; rotate the hexagonal square column, the threaded push rod rotates, pushing the threaded sleeve to move, and through the linkage of the connecting shaft and the sliding plate, the limiting arc block slides along the arc groove; when the limiting arc block is parallel to the limiting slot, reverse the hexagonal square column, the spring arc retraction rod pushes the limiting arc block into the limiting slot, and the die body and the fixing plate are locked; in the same way, use the fixing mechanism to lock the top plate and the punch body.

[0021] Overall adaptation and debugging: Align the guide rod of the concave plate body with the guide sleeve of the convex plate body, close the mold and debug, check the cooling water pipe connection, the smoothness of the injection port, etc., to ensure that all components of the mold frame work together normally.

[0022] Mold closing and material injection: The mold frame closes, and the convex plate body and concave plate body are precisely aligned through guide rods and guide sleeves; the material is injected into the cavity through the injection port of the top plate, and the panel of the unloading mechanism and other components remain in their initial positions to close the cavity.

[0023] Demolding operation: After injection molding is completed, the machine tool mechanism presses down on the panel of the unloading mechanism. The panel slides up along the panel bolt column, compressing the spring and driving the limit sleeve and push tube to slide relative to each other. The panel pins go beyond the mold and push the molded material out of the cavity.

[0024] Reset preparation: The machine tool removes the pressure on the panel, the spring elasticity returns, the panel is pulled up and slids back to reset, the mold frame returns to the mold closing and injection waiting state, ready for the next injection;

[0025] Unlocking and Separation: When mold changing is required, reverse the hexagonal square column of the fixing mechanism, the threaded push rod rotates in the opposite direction, the threaded sleeve moves back, and driven by the connecting shaft and the slide plate, the limit arc block compresses the spring arc retraction rod, and slides out from the limit slot of the concave plate body, releasing the locking between the fixing plate and the concave plate body and the convex plate body; separating the top plate from the convex plate body and the bottom plate side fixing plate from the concave plate body.

[0026] New mold installation: Remove the old mold and replace it with a new concave plate body and a convex plate body; repeat the locking steps of the fixing mechanism in the installation stage to lock the new mold with the fixing plate and the top plate; adjust the alignment of the guide rod and guide sleeve, cooling and injection system, and the mold change is completed, and production can continue. Attached Figure Description

[0027] Figure 1 This is a front view schematic diagram of the structure of the present invention;

[0028] Figure 2 This is an exploded view of the structure of the present invention;

[0029] Figure 3 This is a cross-sectional schematic diagram of the unloading mechanism of the present invention;

[0030] Figure 4 This is a schematic diagram of the fixing mechanism of the present invention;

[0031] Figure 5 This is a cross-sectional schematic diagram of the fixing mechanism of the present invention;

[0032] Figure 6 This is a schematic diagram of the mechanical transmission of the fixing mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the convex plate mechanism of the present invention;

[0034] Figure 8 This is a schematic diagram of the concave plate mechanism of the present invention;

[0035] Figure 9 This is a schematic diagram of the combination of the fixing mechanism, the convex plate mechanism, the top plate and the injection port of the present invention;

[0036] Figure 10 This is a cross-sectional schematic diagram of the convex plate mechanism of the present invention;

[0037] Figure 11 This is a schematic diagram of the combination of the base plate mechanism, square iron and unloading mechanism of the present invention;

[0038] Figure 12 This is a schematic diagram of the combination of the base plate mechanism, square iron, unloading mechanism and fixing mechanism of the present invention;

[0039] Figure 13 This is a schematic diagram of the combination of the base plate mechanism, square iron, unloading mechanism, fixing mechanism and concave plate mechanism of the present invention.

[0040] In the diagram: 1. Base plate mechanism; 11. Base plate body; 12. Insertion hole; 13. First through hole; 14. Base plate bolt post; 15. Panel bolt post; 2. Square iron; 3. Unloading mechanism; 31. Panel; 32. Limiting sleeve; 33. Push tube; 34. Panel pin; 35. Spring; 36. Connecting threaded hole; 37. Sliding hole; 4. Fixing mechanism; 41. Fixing plate; 42. Connecting hole; 43. Second through hole; 44. Fixing block; 45. Limiting arc block; 46. Hexagonal square iron. 47. Spring-loaded arc-shaped retraction rod; 48. Arc-shaped groove; 49. Connecting shaft; 410. Slide plate; 411. Adjusting rail; 412. Threaded sleeve; 413. Threaded push rod; 5. Concave plate mechanism; 51. Concave plate body; 52. First set hole; 53. Guide rod; 54. Fixed square hole; 55. Limiting slot; 6. Protruding plate mechanism; 61. Protruding plate body; 62. Cooling water pipe; 63. Second set hole; 64. Guide sleeve; 65. Cooling tank; 7. Top plate; 8. Injection port. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-13 One embodiment provided by the present invention:

[0043] The base plate body 11, square iron 2, panel 31, concave plate body 51, and convex plate body 61 used in this application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0044] A quick mold changing automatic locking mold frame includes a base plate mechanism 1, a square iron 2, an unloading mechanism 3, a fixing mechanism 4, a concave plate mechanism 5, a convex plate mechanism 6, a top plate 7, and an injection port 8. The base plate body 11 of the base plate mechanism (1) is rectangular, and base plate bolt columns 14 are provided vertically upward at the four outer corners. The base plate body 11 has four outer sides, and at least two insertion holes 12 are evenly opened on each side. Bolts are fitted in the insertion holes 12 and connected to the bottom end face of the square iron 2 through the bolts, so that the square iron 2 is vertically erected on the outer side of the base plate body 11. The top of the square iron 2 is connected to the fixing mechanism 4 through the base plate bolt columns 14.

[0045] The fixing mechanism 4 includes a fixing plate 41, an adjusting rail 411, a limiting arc block 45, and a sliding plate 410. The fixing plate 41 is a rectangular plate with a fixing block 44 integrally formed on its top surface. The fixing block 44 is rectangular and is adapted to the fixing square hole 54 opened on the concave plate body 51 of the concave plate mechanism 5. An arc groove 48 is opened in the fixing block 44. The horizontal end of the arc groove 48 penetrates through the two sides of the fixing block 44, and the vertical end extends into the interior of the fixing plate 41 and communicates with the rotation space of the threaded push rod 413. One end of the threaded push rod 413 is connected to the hexagonal square column 46, and the other end is rotatably connected to the interior of the fixing block 44. The outer wall of the threaded push rod 413 is adapted to the threaded sleeve 412. There are two limiting arc blocks 45 inside the arc groove 48, which slide along the arc groove 48. A spring arc retraction rod 47 is connected between the two limiting arc blocks 45.

[0046] Furthermore, the fixing mechanism 4 includes a limiting arc block 45 and a sliding plate 410. The limiting arc block 45 and the sliding plate 410 are rotatably connected to the connecting shaft 49. The sliding plate 410 is adapted to be disposed in the adjusting rail 411. The adjusting rail 411 is fixed to the threaded sleeve 412. The rotating hexagonal prism 46 drives the threaded push rod 413 to rotate, pushing the threaded sleeve 412 to move, and the limiting arc block 45 slides along the arc groove 48 in conjunction with the movement of the limiting arc block 45.

[0047] Furthermore, the top plate 7 is fixed to the top of the fixing mechanism 4 by bolts. The top plate 7 is a rectangular plate, and its bottom end is locked to the convex plate body 61 by the fixing mechanism 4. An injection port 8 is opened on the top surface of the top plate 7, and the injection port 8 is connected to the mold cavity. The fixing mechanism 4 is locked to the convex plate body 61 of the convex plate mechanism 6. A connecting hole 42 and a second through hole 43 are opened on the fixing plate 41 of the fixing mechanism 4. The connecting hole 42 is a circular hole located on the edge of the fixing plate 41. The internal thread of the connecting hole 42 is connected to the bottom plate bolt post 14. The internal sliding connection of the second through hole 43 is connected to the outer wall of the panel pin 34.

[0048] Furthermore, multiple panel bolt columns 15 are vertically spaced upward on the inner side of the upper surface of the base plate body 11, and the top of the base plate body 11 is provided with an unloading mechanism 3. The base plate body 11 of the base plate mechanism 1 is provided with a first through hole 13, which is a circular through hole and is evenly distributed on the base plate body 11 for connecting components between the mold frame and external equipment.

[0049] Furthermore, the unloading mechanism 3 includes a panel 31, which is a rectangular plate that is adapted to the panel. A sliding hole 37 is provided on the panel 31 at the position corresponding to the panel bolt post 15. The panel 31 is sleeved on the panel bolt post 15 through the sliding hole 37 and can slide up and down along the panel bolt post 15. The limiting sleeve 32 and the push tube 33 are hollow tubular structures that are sleeved on the outside of the panel bolt post 15.

[0050] Furthermore, the top end of the limiting sleeve 32 abuts against the lower surface of the panel 31, and the push tube 33 is sleeved on the outside of the limiting sleeve 32, and the two can slide relative to each other. The panel bolt post 15 and the push tube 33 are sleeved on the spring 35 below.

[0051] Furthermore, the concave plate mechanism 5 includes a concave plate body 51, a fixing square hole 54 is opened on the top surface of the concave plate body 51, a limiting slot 55 is opened on the inner wall of the fixing square hole 54 corresponding to the position of the limiting arc block 45, a first sleeve hole 52 is also opened on the concave plate body 51, a guide rod 53 is adapted in the first sleeve hole 52, the guide rod 53 is vertically arranged in the concave plate body 51, and the top end of the guide rod 53 of the concave plate mechanism 5 is hemispherical.

[0052] Furthermore, the convex plate mechanism 6 includes a convex plate body 61, which is a rectangular block adapted to the concave plate body 51. It is provided with a cooling water pipe 62 and a cooling groove 65 inside. The cooling water pipe 62 is connected to the cooling groove 65. A second sleeve hole 63 and a guide sleeve 64 are opened on the convex plate body 61 corresponding to the first sleeve hole 52 and the guide rod 53. The guide sleeve 64 is adapted to be fitted onto the guide rod 53.

[0053] Furthermore, the cooling water pipes 62 of the convex plate mechanism 6 extend to the outside of the convex plate body 61 at both ends and are connected to an external cooling system to achieve circulating cooling of the convex plate body 61.

[0054] Furthermore, the upper surface of the panel 31 of the unloading mechanism 3 is provided with a connecting threaded hole 36, and a panel pin 34 is threadedly connected inside the connecting threaded hole 36. The panel pin 34 slides vertically upward to assist in ejecting the material during unloading.

[0055] Working principle: Installation of base plate and square iron: Place the base plate body 11 on the working platform, and use bolts to fasten the base plate body 11 to the external support structure through the base plate bolt column 14; insert bolts into the insertion holes on the outer side of the base plate body 11 to vertically fix the square iron 2 to the four sides of the base plate body 11, ensuring that the square iron 2 is vertical and stable.

[0056] Assembly of unloading mechanism: Align the sliding hole of panel 31 with panel bolt post 15 and fit it in so that panel 31 is placed above base plate body 11; fit the limiting sleeve 32 and push tube 33 onto panel bolt post 15 in sequence so that the top of the limiting sleeve 32 is close to the lower surface of panel 31; put on spring 35 and adjust its position to ensure that spring 35 can be normally compressed and reset when panel 31 slides along panel bolt post 15.

[0057] Connection between the fixing mechanism and the die: Take the fixing plate 41 and insert the fixing block 44 at its top into the fixing square hole 54 of the die body 51; rotate the hexagonal column 46, the threaded push rod 413 rotates, pushing the threaded sleeve 412 to move, and through the linkage of the connecting shaft 49 and the sliding plate 410, the limiting arc block 45 slides along the arc groove 48; when the limiting arc block 45 is parallel to the limiting slot 55, reverse the hexagonal column 46, the spring arc retraction rod 47 pushes the limiting arc block 45 into the limiting slot 55, and the die body 51 and the fixing plate 41 are locked; in the same way, use the fixing mechanism 4 to lock the top plate 7 and the punch body 61.

[0058] Overall adaptation and debugging: Align the guide rod 53 of the concave plate body 51 with the guide sleeve 64 of the convex plate body 61, close the mold and debug, check the connection of the cooling water pipe 62, the unobstructedness of the injection port 8, etc., to ensure that all components of the mold frame work together normally.

[0059] Mold closing and material injection: The mold frame closes, and the convex plate body 61 and the concave plate body 51 are precisely aligned through the guide rod 53 and the guide sleeve 64; the material is injected into the cavity through the injection port 8 of the top plate 7, and the panel 31 of the unloading mechanism 3 and the like maintain the initial position to close the cavity.

[0060] Demolding operation: After injection molding is completed, the machine tool mechanism presses down the panel 31 of the unloading mechanism 3. The panel 31 slides up along the panel bolt column 15, compressing the spring 35, which drives the limit sleeve 32 and the push tube 33 to slide relative to each other. The panel pin 34 extends beyond the mold, ejecting the molded material from the cavity.

[0061] Reset preparation: The machine tool removes the pressure on the panel 31, the spring 35 returns to its elastic state, the panel 31 is pulled up and slid back to reset, the mold frame returns to the mold closing and injection waiting state, ready for the next injection;

[0062] Unlocking and Separation: When mold changing is required, the hexagonal square column 46 of the reverse fixing mechanism 4 is reversed, the threaded push rod 413 rotates in the opposite direction, the threaded sleeve 412 moves back, and driven by the connecting shaft 49 and the slide plate 410, the limiting arc block 45 compresses the spring arc retraction rod 47, and slides out from the limiting slot 55 of the concave plate body 51, releasing the locking between the fixing plate 41 and the concave plate body 51 and the convex plate body 61; separating the top plate 7 from the convex plate body 61, and the bottom plate side fixing plate 41 from the concave plate body 51.

[0063] New mold installation: Remove the old mold and replace it with the new concave plate body 51 and convex plate body 61; repeat the locking steps of the fixing mechanism 4 in the installation stage to lock the new mold with the fixing plate 41 and the top plate 7; adjust the alignment of the guide rod 53 and the guide sleeve 64, the cooling and injection system, and the mold change is completed, and production can continue.

[0064] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, using the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A quick mold changing automatic locking mold frame, characterized in that: The system includes a base plate mechanism (1), a square iron (2), a discharge mechanism (3), a fixing mechanism (4), a concave plate mechanism (5), a convex plate mechanism (6), a top plate (7), and a filling port (8). The base plate body (11) of the base plate mechanism (1) is rectangular, and base plate bolt columns (14) are provided vertically upward at the four corners of its outer side. The base plate body (11) has four outer sides, and at least two insertion holes (12) are evenly opened on each side. Bolts are fitted in the insertion holes (12) and connected to the bottom end face of the square iron (2) through the bolts, so that the square iron (2) is vertically erected on the outer side of the base plate body (11). The top of the square iron (2) is connected to the fixing mechanism (4) through the base plate bolt columns (14). The fixing mechanism (4) includes a fixing plate (41), an adjusting rail (411), a limiting arc-shaped block (45), and a sliding plate (410). The fixing plate (41) is a rectangular plate, and a fixing block (44) is integrally formed on its top surface. The fixing block (44) is rectangular and is adapted to the fixing square hole (54) opened on the concave plate body (51) of the concave plate mechanism (5). An arc-shaped groove (48) is opened in the fixing block (44). The horizontal end of the arc-shaped groove (48) penetrates through the two sides of the fixing block (44), and the vertical end... Extending to the inside of the fixed plate (41) and communicating with the rotation space of the threaded push rod (413), one end of the threaded push rod (413) is connected to the hexagonal square column (46), and the other end is rotatably connected to the inside of the fixed block (44). The outer wall of the threaded push rod (413) is adapted to the threaded sleeve (412). Two limiting arc blocks (45) are provided inside the arc groove (48) and slide along the arc groove (48). A spring arc retraction rod (47) is connected between the two limiting arc blocks (45). The limiting arc block (45) and the sliding plate (410) are rotatably connected to the connecting shaft (49). The sliding plate (410) is adapted to be installed in the adjusting rail (411). The adjusting rail (411) is fixed to the threaded sleeve (412). Rotating the rotating hexagonal column (46) drives the threaded push rod (413), pushes the threaded sleeve (412) to move, and the limiting arc block (45) slides along the arc groove (48). The concave plate mechanism (5) includes a concave plate body (51), a fixed square hole (54) is opened on the top surface of the concave plate body (51), a limiting slot (55) is opened on the inner wall of the fixed square hole (54) corresponding to the position of the limiting arc block (45), a first set hole (52) is also opened on the concave plate body (51), a guide rod (53) is adapted in the first set hole (52), the guide rod (53) is vertically arranged in the concave plate body (51), and the top end of the guide rod (53) of the concave plate mechanism (5) is hemispherical.

2. The quick mold changing automatic locking mold frame according to claim 1, characterized in that: The top plate (7) of the fixing mechanism (4) is fixed by bolts. The top plate (7) is a rectangular plate. Its bottom end is locked to the convex plate body (61) of the convex plate mechanism (6) by the fixing mechanism (4). The top surface of the top plate (7) is opened with a sprue (8). The sprue (8) is connected to the mold cavity. The fixing mechanism (4) is locked to the convex plate body (61) of the convex plate mechanism (6). The fixing plate (41) of the fixing mechanism (4) is provided with a connecting hole (42) and a second through hole (43). The connecting hole (42) is a circular hole located on the edge of the fixing plate (41). The internal thread of the connecting hole (42) is connected to the bottom plate bolt post (14). The internal sliding connection of the second through hole (43) is connected to the outer wall of the panel pin (34).

3. The quick mold changing automatic locking mold frame according to claim 1, characterized in that: On the inner side of the upper surface of the base plate body (11), multiple panel bolt columns (15) are vertically spaced upward. The top of the base plate body (11) is provided with a material unloading mechanism (3). The base plate body (11) of the base plate mechanism (1) is provided with a first through hole (13). The first through hole (13) is a circular through hole, which is evenly distributed on the base plate body (11) and is used for connecting components between the mold frame and external equipment.

4. The quick mold changing automatic locking mold frame according to claim 3, characterized in that: The unloading mechanism (3) includes a panel (31), a limiting sleeve (32) and a push tube (33). The panel (31) is a rectangular plate with a sliding hole (37) on it corresponding to the position of the panel bolt post (15). The panel (31) is fitted onto the panel bolt post (15) through the sliding hole (37) and can slide up and down along the panel bolt post (15). The limiting sleeve (32) and the push tube (33) are hollow tubular structures and are fitted onto the outside of the panel bolt post (15).

5. The quick mold changing automatic locking mold frame according to claim 4, characterized in that: The top of the limiting sleeve (32) abuts against the lower surface of the panel (31), and the push tube (33) is sleeved on the outside of the limiting sleeve (32). The two can slide relative to each other. A spring (35) is sleeved under the panel bolt post (15) and the push tube (33).

6. The quick mold changing automatic locking mold frame according to claim 3, characterized in that: The convex plate mechanism (6) includes a convex plate body (61), which is a rectangular block adapted to the concave plate body (51). It is provided with a cooling water pipe (62) and a cooling groove (65) inside. The cooling water pipe (62) is connected to the cooling groove (65). A second set of holes (63) and a guide sleeve (64) are opened on the convex plate body (61) corresponding to the first set of holes (52) and the guide rod (53). The guide sleeve (64) is adapted to be fitted on the guide rod (53).

7. The quick mold changing automatic locking mold frame according to claim 6, characterized in that: The cooling water pipes (62) of the convex plate mechanism (6) extend to the outside of the convex plate body (61) at both ends and are connected to the external cooling system to achieve circulating cooling of the convex plate body (61).

8. The quick mold changing automatic locking mold frame according to claim 6, characterized in that: The upper surface of the panel (31) of the unloading mechanism (3) is provided with a connecting threaded hole (36), and the internal thread of the connecting threaded hole (36) is connected to a panel pin (34). The panel pin (34) slides vertically upward to assist in ejecting the material during unloading.

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