A hydraulic drive type injection mold quick mold changing device

Abstract

The application belongs to the technical field of injection molding machines, and discloses a hydraulic drive type injection mold quick mold changing device, which comprises an injection molding frame, the front face and the back face of the injection molding frame are provided with stable adjusting assemblies, the stable adjusting assemblies comprise stable carriages, the inner side of the stable carriages is transversely slidably provided with a plurality of groups of sliding guide rods, the side of the stable carriage close to the injection molding frame is slidably provided with stable sliding plates, the end portions of the two groups of stable sliding plates are provided with a group of sliding frames, and the top of the sliding frame is provided with a winch device. Through the cooperation of the stable adjusting assemblies and the sliding frames and other structures, the stability of mold changing adjustment is ensured in a sliding limiting manner, the problem that the equipment is damaged due to shaking and impact caused by poor stability is avoided, the stability of the transverse and vertical sliding of the sliding frame can be flexibly ensured through the stable adjusting assemblies, and the loss caused by the damage of the equipment due to impact is effectively avoided.

Description

Technical Field

[0001] This invention belongs to the field of injection molding machine technology, specifically a hydraulically driven quick mold changing device for injection molds. Background Technology

[0002] Injection molding machines are essential equipment in modern plastic product manufacturing. They produce plastic products by melting and extruding the plastic into a mold and then cooling it. This ensures the precision and efficiency of the processed products. Different products require different injection molds. When changing molds, it is usually necessary to disassemble the mold to be replaced from the injection unit before replacement, which greatly affects normal processing and reduces processing efficiency. Now, by using a quick mold change device, the efficiency of mold changing can be effectively improved.

[0003] For example, utility model CN120422414A discloses a quick mold changing mechanism for an injection molding machine, including: a housing mechanism, a lifting and adjusting mechanism, and a quick installation mechanism. The housing mechanism includes an injection molding machine housing, which is the main load-bearing structure. A door slot is opened on the front side of the housing, and the door is installed in the door slot through a sliding fit. The door can be opened and closed along the slot. A placement slot is opened at the top of the injection molding machine housing, which serves as a channel for hoisting and moving the mold in and out, forming the basic space for accommodating the mold. The device innovates around two core objectives: quick mold changing and quick mold locking. It abandons the traditional hydraulic and magnetic fixing mode and uses mechanical structures such as gear transmission and screw drive in conjunction with a motor to build a multi-mechanism collaborative system. This achieves efficient connection of mold hoisting, position adaptation, and precise locking, significantly shortening the mold changing time, eliminating the hidden danger of hydraulic pipeline entanglement, and improving the safety and production efficiency of mold changing operations.

[0004] In existing technologies, the mold that needs to be replaced can be lifted out and replaced by using a suspension device, thereby achieving a quick mold change and effectively improving efficiency. However, the suspension mechanism cannot effectively guarantee the stability of the suspension, which can easily cause the mold or equipment to be damaged by shaking during the replacement process and impacting the injection molding frame. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a hydraulically driven quick mold changing device for injection molds, which solves the problem that existing suspension mechanisms cannot effectively ensure the stability of the suspension, leading to easy shaking during the suspension changing process, which can cause impacts on the injection molding frame and damage to the mold or equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulically driven injection mold quick mold changing device, including an injection frame, wherein the front and back of the injection frame are provided with stabilizing adjustment components; The stabilizing adjustment assembly includes a stabilizing slide, with several sets of sliding guide rods slidably arranged laterally on the inner side of the stabilizing slide. A stabilizing slide plate is slidably arranged on the side of the stabilizing slide close to the injection molding frame. A set of sliding frames is installed at the ends of the two sets of stabilizing slide plates, and a winch is installed on the top of the sliding frames. Two sets of steel wire ropes are provided at the output end of the winch, and rotating sleeves are installed at the ends of the steel wire ropes. The two sides of the rotating sleeves are fixedly connected to the bottom of the stabilizing slide through brackets.

[0007] Preferably, welding plates are installed at both ends of the sliding guide rod, and the welding plates are welded to the front and back of the injection molding frame. One side of the stabilizing slide is elastically connected to the welding plate by several sets of return springs. The return springs are movably sleeved on the outside of the sliding guide rod. A through hole is opened in the inside of the stabilizing slide away from the stabilizing slide plate, and the steel wire rope moves through the inside of the through hole.

[0008] Preferably, a number of positioning columns are fixedly installed on the top of the middle section and the bottom of the sliding frame, and welding tooth plates are welded to both sides of the upper and lower ends of the sliding frame.

[0009] Preferably, the upper end of the sliding frame is provided with first guide wheels on both sides, the lower end of the sliding frame is provided with support plates welded on both sides, and the top of the support plates is provided with second guide wheels. The wire rope is movably provided at the top of the first guide wheels and the bottom of the second guide wheels.

[0010] Preferably, the inner side of the injection molding frame is provided with two sets of linkage locking components; The linkage locking assembly includes two sets of movable plates. Four sets of guide rod grooves are opened at the four corners of the movable plates. Two sets of fixed guide rods are welded to the inner side of the upper and lower ends of the movable plates. Two sets of limiting plates are installed on the side of the movable plates near the sliding frame at both ends, and locking teeth are flipped on the inner side of the limiting plates.

[0011] Preferably, a crankshaft bracket is rotatably provided on the inner side of both ends of the movable plate, and a gear is fixedly installed on the side of the crankshaft bracket near the sliding frame. The locking tooth block is engaged on one side of the gear, and a splicing block is installed on the side of the gear away from the crankshaft bracket. A splicing groove is provided on the side of the gear away from the crankshaft bracket.

[0012] Preferably, a crank is rotatably provided on the inner side of the crankshaft bracket, and positioning plates are rotatably provided on both sides of the crank away from the crankshaft bracket. A locking push plate is welded and installed on the side of the positioning plate away from the crank, and several sets of locking rods are fixedly installed on the side of the locking push plate away from the crank.

[0013] Preferably, the linkage locking assembly includes an injection mold, the bottom of which is provided with several sets of positioning grooves, and the positioning grooves are movably spliced ​​on the outside of the positioning post. A combination plate is installed on the side of the injection mold near the movable plate, and the combination plate is embedded in the inside of the movable plate. Several sets of locking grooves are provided on both sides of the combination plate, and the locking rod is movably inserted into the inside of the locking groove.

[0014] Preferably, a support plate is installed at the bottom of the injection molding frame, and support columns are welded to the bottom of the four corners of the support plate. Four sets of limiting guide rods are welded to the inner side of the injection molding frame, and the movable plate on the side away from the reset spring is slidably disposed on the outer side of the limiting guide rods.

[0015] Preferably, a hydraulic thruster is installed on the side of the injection molding frame away from the return spring, and an injection molding machine is installed on the side of the injection molding frame away from the hydraulic thruster.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the combination of a stabilizing adjustment component and a sliding frame, effectively ensures the stability of mold replacement and adjustment by limiting the sliding motion. This avoids equipment damage caused by shaking or impact due to poor stability. A winch is used to drive the steel wire rope for raising and lowering adjustment. During the adjustment process, the sliding frame is pulled to adjust its height. The stabilizing slide restricts the stabilizing plate, allowing the inner sliding frame to slide stably up and down. When changing molds, the two sets of molds are hydraulically pushed to close. During this process, the sliding frame slides laterally along the sliding guide rod. The stabilizing adjustment component flexibly ensures the stability of the sliding frame's lateral and vertical sliding, effectively preventing equipment damage and losses caused by impacts.

[0017] This invention, through the coordinated use of a linkage locking component and a sliding frame, facilitates the unlocking and locking of the locking structure via a sliding bracket that moves up and down, eliminating the need for a separate drive device and effectively reducing device costs. The welded toothed plate engages a transmission gear through up-and-down movement. During gear rotation, the crankshaft rotates along its center, and this rotation, in turn, causes the locking push plate to slide laterally along a fixed guide rod. This lateral movement allows the locking rod to embed into the locking groove. The welded toothed plate on the sliding frame drives the meshing gear to rotate. The upper section of the welded toothed plate controls the locking rod to lock the combined plate, while the lower section controls the locking rod to retract and separate from the combined plate to unlock. This eliminates the need for a separate drive device to provide power to the locking structure, thus effectively reducing device and maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a schematic diagram of the stabilization adjustment component structure of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of B; Figure 5 This is a schematic diagram of the sliding frame structure of the present invention; Figure 6 This is a cross-sectional structural diagram of the linkage locking component of the present invention.

[0019] In the diagram: 100, injection molding frame; 101, bearing plate; 102, support column; 103, hydraulic thruster; 104, injection molding equipment; 105, limit guide rod; 001. Stabilizing adjustment assembly; 200. Stabilizing slide; 201. Welding plate; 202. Sliding guide rod; 203. Return spring; 204. Through hole; 205. Rotating sleeve; 300. Sliding frame; 302. Stabilizing slide plate; 303. Welded toothed plate; 304. Positioning post; 305. First guide wheel; 306. Support plate; 307. Second guide wheel; 308. Winch; 309. Wire rope; 002. Linkage locking assembly; 400. Locking tooth block; 401. Movable plate; 402. Guide rod groove; 403. Fixed guide rod; 404. Limit plate; 500, Locking rod; 501, Gear; 502, Assembly block; 503, Assembly groove; 504, Crankshaft bracket; 505, Crank; 506, Positioning plate; 507, Locking push plate; 600, Injection mold; 601, Positioning groove; 602, Combination plate; 603, Locking groove. Detailed Implementation

[0020] 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.

[0021] like Figures 1 to 6 As shown, the present invention provides a hydraulically driven injection mold quick mold changing device, including an injection frame 100, and a stabilizing adjustment component 001 is provided on the front and back of the injection frame 100. The stabilizing adjustment assembly 001 includes a stabilizing slide 200. Several sets of sliding guide rods 202 are slidably arranged on the inner side of the stabilizing slide 200. A stabilizing slide plate 302 is slidably arranged on the side of the stabilizing slide 200 near the injection molding frame 100. A set of sliding frames 300 is installed at the ends of the two sets of stabilizing slide plates 302. A winch 308 is installed on the top of the sliding frame 300. Two sets of steel wire ropes 309 are provided at the output end of the winch 308. A rotating sleeve 205 is installed at the end of the steel wire ropes 309. The two sides of the rotating sleeve 205 are fixedly connected to the bottom of the stabilizing slide 200 through brackets.

[0022] Welding plates 201 are installed at both ends of the sliding guide rod 202, and the welding plates 201 are welded to the front and back of the injection molding frame 100. One side of the stabilizing slide 200 is elastically connected to the welding plate 201 by several sets of return springs 203. The return springs 203 are movably sleeved on the outside of the sliding guide rod 202. A through hole 204 is opened in the inside of the stabilizing slide 200 away from the stabilizing slide plate 302, and the steel wire rope 309 moves through the inside of the through hole 204.

[0023] Several sets of positioning posts 304 are fixedly installed on the top of the middle and lower sections of the sliding frame 300, and welding toothed plates 303 are welded to both sides of the upper and lower ends of the sliding frame 300.

[0024] The upper end of the sliding frame 300 is rotatably equipped with first guide wheels 305 on both sides, and the lower end of the sliding frame 300 is welded and installed with support plates 306 on both sides. The top of the support plate 306 is rotatably equipped with a second guide wheel 307, and the wire rope 309 is movably installed on the top of the first guide wheel 305 and the bottom of the second guide wheel 307.

[0025] Using the above solution: the injection molding frame 100 can provide constraints on the inner structure; the stabilizing slide 302 can be restricted by the stabilizing slide 200; the stabilizing slide 302 can be restricted by the sliding guide rod 202; the sliding frame 300 can provide an installation position for the mold that needs to be replaced; the winch 308 can adjust the winding and unwinding of the wire rope 309 under the control of the motor; the rotating sleeve 205 at the end is located at the bottom of the stabilizing slide 200; with the cooperation of the guide wheel, the sliding frame 300 can be driven by adjusting the length of the wire rope 309. The sliding frame 300 can be adjusted up and down along the stabilizing slide 200. The positioning column 304 can support the injection mold 600, which can be separated from the main body for mold replacement by controlling the sliding frame 300. The transmission gear 501 can be rotated and adjusted by welding the toothed plate 303. The first guide wheel 305 and the second guide wheel 307 can guide the wire rope 309 to ensure that the force of the wire rope 309 can control the sliding frame 300 to be adjusted up and down. The support plate 306 can provide support and installation position for the bracket of the second guide wheel 307. Wear-resistant sliding bushings can be added to the sliding contact surfaces of the stabilizing carriage 200 and the stabilizing slide plate 302 to further reduce friction loss during relative sliding and improve the smoothness of lifting adjustment. The return spring 203 has circular spring seats welded to both ends, which can be detachably connected to the stabilizing slide 200 and welding plate 201 by bolts, facilitating future maintenance and replacement. A tooth tip clearance of 0.1 to 0.3 mm can be reserved at the meshing point of the welded tooth plate 303 and the gear 501, and high-temperature grease is applied to the tooth surface to ensure the accuracy and long-term effectiveness of the meshing transmission. Anti-slip textures can be provided on the inner side of the grooves of the first guide wheel 305 and the second guide wheel 307. The surface of the wire rope 309 can be coated with a zinc alloy layer to enhance its corrosion resistance. At the same time, anti-slip rings are installed at the ends of the guide wheel shafts to prevent the wire rope from slipping. The top of the positioning post 304 can be designed as a conical guide structure, and the inner side of the positioning groove 601 is provided with a corresponding matching conical surface to facilitate quick alignment and splicing of the two. A buffer rubber pad can be installed at the connection between the output end of the hydraulic thruster 103 and the movable plate 401 to avoid hard impact during lateral pushing.

[0026] like Figure 5 and Figure 6 As shown, two sets of linkage locking components 002 are provided on the inner side of the injection molding frame 100; The linkage locking assembly 002 includes two sets of movable plates 401. Four sets of guide rod grooves 402 are provided at the four corners of the movable plates 401. Two sets of fixed guide rods 403 are welded to the inner side of the upper and lower ends of the movable plates 401. Two sets of limiting plates 404 are installed on the side of the movable plates 401 near the sliding frame 300 at both ends. Locking teeth 400 are flipped on the inner side of the limiting plates 404.

[0027] A crankshaft bracket 504 is rotatably mounted on the inner side of both ends of the movable plate 401, and a gear 501 is fixedly mounted on the side of the crankshaft bracket 504 near the sliding frame 300. A locking tooth block 400 is engaged on one side of the gear 501. A splicing block 502 is mounted on the side of the gear 501 away from the crankshaft bracket 504, and a splicing groove 503 is opened on the side of the gear 501 away from the crankshaft bracket 504.

[0028] A crank 505 is rotatably mounted on the inner side of the crankshaft bracket 504. Positioning plates 506 are rotatably mounted on both sides of the crank 505 away from the crankshaft bracket 504. A locking push plate 507 is welded and installed on the side of the positioning plate 506 away from the crank 505, and several sets of locking rods 500 are fixedly installed on the side of the locking push plate 507 away from the crank 505.

[0029] The linkage locking assembly 002 includes an injection mold 600. The bottom of the injection mold 600 is provided with several sets of positioning grooves 601, and the positioning grooves 601 are movably spliced ​​on the outside of the positioning post 304. A combination plate 602 is installed on the side of the injection mold 600 near the movable plate 401, and the combination plate 602 is embedded in the inside of the movable plate 401. Several sets of locking grooves 603 are provided on both sides of the combination plate 602, and the locking rod 500 is movably inserted into the inside of the locking groove 603.

[0030] Using the above scheme: the movable plate 401 can provide a constraint for the injection mold 600, and the positioning grooves 601 at the four corners can slide laterally along the limiting guide rod 105. The fixed guide rod 403 can restrict the locking push plate 507 that slides laterally on the inner side, maintaining the stability of the sliding adjustment of the locking push plate 507. The limiting plate 404 is connected to the side of the movable plate 401, which can restrict the locking tooth block 400 on the inner side. The locking tooth block 400 can be flipped and fitted on the outside of the gear 501, further locking the gear 501. The crankshaft bracket 504 and the crank 505 can be combined to change the rotational force into a lateral pushing and pulling force. By pushing and pulling, the locking push plate 507 can be laterally slidably adjusted. The locking insert 500 moves laterally and inserts into the inner side of the locking groove 603 to achieve the locking effect. The gear 500... 1. Rotation can be achieved by engaging the movable welding toothed plate 303. During rotation, the crankshaft bracket 504 can be adjusted. The splicing block 502 can be spliced ​​into the splicing groove 503 of another set of gears 501. By splicing, the stability of rotation can be effectively increased, and the synchronicity of the rotation of gears 501 can be ensured. The injection mold 600 can be combined to provide space for filling the injection molding material. The positioning groove 601 can be spliced ​​with the positioning column 304. After insertion, the mold can be separated from the main injection frame 100 under the drive of the sliding frame 300. The combination plate 602 can be spliced ​​and inserted into the groove of the movable plate 401. The splicing moving locking push plate 507 will drive the locking rod 500 to lock the combination plate 602. By locking, the injection mold 600 can be stably spliced, effectively achieving the effect of quick mold change. An elastic sealing gasket can be added to the mating surface of the combination plate 602 and the movable plate 401 to prevent molten material from splashing into the gap during injection molding and affecting the sliding performance. The end of the locking rod 500 can be machined into an arc-shaped chamfer, and the inner edge of the locking groove 603 is rounded to reduce the guiding resistance and wear during the insertion and removal process; An annular grease storage groove can be opened on the inner side of the guide rod groove 402 of the movable plate 401, and a filling hole is reserved to realize long-term self-lubrication of the fixed guide rod 403 and the guide rod groove 402.

[0031] like Figure 1 As shown, a support plate 101 is installed at the bottom of the injection molding frame 100, and support columns 102 are welded to the bottom of the four corners of the support plate 101. Four sets of limit guide rods 105 are welded to the inner side of the injection molding frame 100, and the movable plate 401 on the side away from the reset spring 203 is slidably arranged on the outside of the limit guide rods 105.

[0032] A hydraulic thruster 103 is installed on the side of the injection molding frame 100 away from the return spring 203, and an injection molding machine 104 is installed on the side of the injection molding frame 100 away from the hydraulic thruster 103. Using the above scheme: the support plate 101 can provide support for the overall structure at the top, the support column 102 can connect the support plate 101 to the ground, and the bottom is suspended to facilitate the disassembly of the replacement mold, the limiting guide rod 105 can restrict the lateral sliding of the movable plate 401, the return spring 203 can push the stabilizing slide 200 and the sliding frame 300 to return to the center position of the injection frame 100, so that the combination plate 602 can be taken out from the inside of the movable plate 401 near the injection equipment 104, the hydraulic thruster 103 can push the movable plate 401 to move laterally to assist in mold closing and disassembly, and the injection equipment 104 is used to inject the injection material into the mold cavity for injection molding.

[0033] The working principle and usage process of this invention are as follows: The hydraulic thruster 103 pushes the movable plate 401 to move laterally along the limiting guide rod 105, while simultaneously contacting and pushing the sliding frame 300 and the stabilizing slide 200 to move along the sliding guide rod 202 towards the injection molding equipment 104. After the movement, the mold is closed. During the movement, the gear 501 will combine with the welded tooth plate 303 through the side tooth groove. The winch 308 will wind up the wire rope 309. During the winding process, the second guide wheel 307 will drive the sliding frame 300 and the stabilizing slide plate 302 to move upward along the stabilizing slide 200. During the movement, the welded tooth plate 303 will mesh with the transmission gear 501 and rotate 180 degrees. During the rotation, the crankshaft frame 504 will drive the locking push plate 507 to retract through the crank 505. After the retraction, the locking insert 500 will separate from the locking groove 603. At the same time, when rising, the positioning pin 304 will insert into the positioning groove 601 to restrict the injection mold 600. After unlocking, the hydraulic thruster 103 will retract to separate the injection mold 600 from the movable plate 401. After separation, the steel wire rope 309 is released through the winch 308 to control the sliding frame 300 to move downward. After moving, the movable plate 401 is kept aligned with the combined plate 602. The hydraulic thruster 103 drives the movable plate 401 and the combined plate 602 to combine. After combination, the winch 308 drives the sliding frame 300 to move downward. During the downward movement, the combined plate 602 is restricted again by the internal locking rod 500. During the downward movement of the sliding frame 300, the positioning column 304 separates from the positioning groove 601. After separation, the splicing and replacement effect can be achieved.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulically driven quick mold changing device for injection molds, comprising an injection frame (100), characterized in that: The injection molding frame (100) is provided with stabilizing adjustment components (001) on the front and back. The stabilizing adjustment component (001) includes a stabilizing slide (200). Several sets of sliding guide rods (202) are slidably arranged on the inner side of the stabilizing slide (200). A stabilizing slide plate (302) is slidably arranged on the side of the stabilizing slide (200) close to the injection frame (100). A set of sliding frames (300) is installed at the ends of the two sets of stabilizing slide plates (302). A winch (308) is installed on the top of the sliding frame (300). Two sets of steel wire ropes (309) are provided at the output end of the winch (308). A rotating sleeve (205) is installed at the end of the steel wire rope (309). The two sides of the rotating sleeve (205) are fixedly connected to the bottom of the stabilizing slide (200) through a bracket.

2. The hydraulically driven quick mold changing device for injection molds according to claim 1, characterized in that: Welding plates (201) are installed at both ends of the sliding guide rod (202), and the welding plates (201) are welded to the front and back of the injection molding frame (100). The stabilizing slide (200) is elastically connected to the welding plate (201) by a number of sets of return springs (203). The return springs (203) are movably sleeved on the outside of the sliding guide rod (202). A through hole (204) is opened in the inside of the stabilizing slide (200) away from the stabilizing slide plate (302), and the steel wire rope (309) moves through the inside of the through hole (204).

3. The hydraulically driven quick mold changing device for injection molds according to claim 2, characterized in that: Several sets of positioning columns (304) are fixedly installed on the top of the middle and lower sections of the sliding frame (300), and welding toothed plates (303) are welded to both sides of the upper and lower ends of the sliding frame (300).

4. The hydraulically driven quick mold changing device for injection molds according to claim 3, characterized in that: The upper end of the sliding frame (300) is rotatably provided with first guide wheels (305) on both sides, the lower end of the sliding frame (300) is welded and installed with support plates (306) on both sides, and the top of the support plate (306) is rotatably provided with second guide wheels (307). The wire rope (309) is movably provided at the top of the first guide wheel (305) and the bottom of the second guide wheel (307).

5. The hydraulically driven quick mold changing device for injection molds according to claim 1, characterized in that: The inner side of the injection molding frame (100) is provided with two sets of linkage locking components (002). The linkage locking assembly (002) includes two sets of movable plates (401). Four sets of guide rod grooves (402) are provided at the four corners of the movable plates (401). Two sets of fixed guide rods (403) are welded to the inner side of the upper and lower ends of the movable plates (401). Two sets of limiting plates (404) are installed on the side of the movable plates (401) near the sliding frame (300) at both ends. Locking teeth (400) are flipped on the inner side of the limiting plates (404).

6. The hydraulically driven quick mold changing device for injection molds according to claim 5, characterized in that: A crankshaft bracket (504) is rotatably mounted on the inner side of both ends of the movable plate (401), and a gear (501) is fixedly mounted on the side of the crankshaft bracket (504) near the sliding frame (300). The locking tooth block (400) is meshed on one side of the gear (501). A splicing block (502) is mounted on the side of the gear (501) away from the crankshaft bracket (504), and a splicing groove (503) is opened on the side of the gear (501) away from the crankshaft bracket (504).

7. The hydraulically driven quick mold changing device for injection molds according to claim 6, characterized in that: A crank (505) is rotatably mounted on the inner side of the crankshaft bracket (504). Positioning plates (506) are rotatably mounted on both sides of the crank (505) away from the crankshaft bracket (504). A locking push plate (507) is welded and installed on the side of the positioning plate (506) away from the crank (505). The locking push plate (507) is slidably mounted on the outside of the fixed guide rod (403). Several sets of locking rods (500) are fixedly mounted on the side of the locking push plate (507) away from the crank (505).

8. The hydraulically driven quick mold changing device for injection molds according to claim 7, characterized in that: The linkage locking assembly (002) includes an injection mold (600), the bottom of which is provided with several sets of positioning grooves (601), and the positioning grooves (601) are movably spliced ​​on the outside of the positioning post (304). A combination plate (602) is installed on the side of the injection mold (600) near the movable plate (401), and the combination plate (602) is embedded in the inner side of the movable plate (401). Several sets of locking grooves (603) are provided on both sides of the combination plate (602), and the locking rod (500) is movably inserted into the inner side of the locking groove (603).

9. The hydraulically driven quick mold changing device for injection molds according to claim 2, characterized in that: The bottom of the injection molding frame (100) is equipped with a bearing plate (101), and support columns (102) are welded to the bottom of the four corners of the bearing plate (101). Four sets of limiting guide rods (105) are welded to the inner side of the injection molding frame (100). The movable plate (401) on the side away from the reset spring (203) is slidably arranged on the outside of the limiting guide rods (105).

10. The hydraulically driven quick mold changing device for injection molds according to claim 9, characterized in that: A hydraulic thruster (103) is installed on the side of the injection molding frame (100) away from the return spring (203), and an injection molding machine (104) is installed on the side of the injection molding frame (100) away from the hydraulic thruster (103).

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