A mold locking mechanism for an injection molding machine

Abstract

This invention provides a mold-locking mechanism for an injection molding machine, including a frame. A hydraulic lifting platform is mounted on the upper surface of the frame, and a template device is provided inside the hydraulic lifting platform. The execution end of the template device is connected to a mold. The template device includes a magnetic static template mounted on the upper surface of the frame, positioning components on both sides of the magnetic static template, and a magnetic moving template mounted on the execution end of the hydraulic lifting platform. Both the magnetic static template and the magnetic moving template are connected to a negative pressure suction component. The mold includes a static mold mounted on the upper surface of the magnetic static template and a moving mold mounted on the lower surface of the magnetic moving template. A first limiting component is provided between the static mold and the magnetic static template, and a second limiting component is provided between the moving mold and the magnetic moving template. This invention can quickly and accurately locate the positions of the magnetic moving template and the magnetic static template used for installing the mold and perform stable installation, thereby improving mold-locking efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of injection molding machines, and specifically to a mold clamping mechanism for injection molding machines. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting plastics using thermoplastic molding molds.

[0003] According to the injection molding machine clamping mechanism provided in patent application CN201720188750.5, the clamping mechanism includes a tie rod with a moving platen and a fixed platen arranged opposite to each other on the tie rod. A moving mold and a fixed mold are arranged between the moving platen and the fixed platen. Both the moving platen and the fixed platen have spherical protrusions protruding outward on opposite sides. By providing spherical protrusions on the moving platen and the fixed platen, the injection molding machine clamping mechanism provides a pre-deformation space, so that the moving platen and the fixed platen fully support the moving mold and the fixed mold, ensuring that there is no gap at the parting surface between the moving mold and the fixed mold, improving the quality of the molded product, and at the same time protecting the mold and extending the service life of the mold.

[0004] The aforementioned clamping mechanism can provide a pre-deformation space, allowing the moving and fixed mold plates to fully support the moving and fixed molds. However, the clamping mechanism has a single clamping method and lacks positioning capability, resulting in an unstable connection between the mold and the mold plate, which affects subsequent injection molding work. Summary of the Invention

[0005] This invention provides a mold clamping mechanism for an injection molding machine to solve the technical problems mentioned in the background section.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A mold clamping mechanism for an injection molding machine includes a frame, a hydraulic lifting platform mounted on the upper surface of the frame, a template device inside the hydraulic lifting platform, and a mold connected to the execution end of the template device.

[0008] The template device includes a magnetic static template installed on the upper surface of the frame, positioning components on both sides of the magnetic static template, and a magnetic moving template installed on the actuator end of the hydraulic lifting platform. Both the magnetic static template and the magnetic moving template are connected to the negative pressure suction component.

[0009] The positioning component includes a hydraulic cylinder mounted on the upper surface of the frame, a delay limiting component connected to the actuating end of the hydraulic cylinder, and a pressing component connected to the actuating end of the delay limiting component;

[0010] The mold includes a stationary mold mounted on the upper surface of the magnetic stationary template and a moving mold mounted on the lower surface of the magnetic moving template. A first limiting component is provided between the stationary mold and the magnetic stationary template, and a second limiting component is provided between the moving mold and the magnetic moving template.

[0011] Furthermore, the template device also includes spherical concave grooves provided on the upper surface of the frame and the execution end of the hydraulic lifting platform, and spherical protrusions provided inside the two spherical concave grooves. The two spherical protrusions are respectively installed on the lower surface of the magnetic static template and the upper surface of the magnetic moving template. The sliding of the spherical protrusions in the spherical concave grooves facilitates the removal of the magnetic static template and the magnetic moving template.

[0012] Furthermore, the negative pressure suction assembly includes a suction component installed at one end of the frame and a venting component installed at the other end of the frame. The suction component includes a first flexible hose passing through the housing of the hydraulic lifting platform and a first air supply pipe passing through the housing of the frame. The air inlet ends of the first flexible hose and the first air supply pipe extend into the interior of the two spherical concave grooves, respectively. The air outlet ends of the first flexible hose and the first air supply pipe are both connected to the air inlet end of the first three-way pipe. The air outlet end of the first three-way pipe is connected to a second air supply pipe. The air outlet end of the second air supply pipe extends into the interior of the frame and is connected to a suction pump. A vacuum is maintained between the spherical protrusion and the spherical concave groove. The spherical protrusion is adsorbed onto the spherical concave groove, improving the effect of fixing the magnetic static template and the magnetic dynamic template onto the spherical concave groove.

[0013] Furthermore, the venting component includes a second flexible hose passing through the housing of the hydraulic lifting platform and a third air supply pipe passing through the housing of the frame. The inlet ends of the second flexible hose and the third air supply pipe are both connected to the outlet end of the second three-way pipe. The inlet end of the second three-way pipe is connected to a fourth air supply pipe. The inlet end of the fourth air supply pipe extends into the frame and is connected to a solenoid valve. The gap between the spherical concave groove and the spherical protrusion is connected to the outside, thereby venting the air and eliminating the vacuum state between the spherical concave groove and the spherical protrusion, which facilitates the removal of the magnetic static template and the magnetic moving template.

[0014] Furthermore, the first limiting component has the same structure as the second limiting component. The first limiting component includes guide strips disposed on both sides of the magnetic static template and installed on the upper surface of the frame, and a plurality of positioning grooves disposed on the upper surface of the magnetic static template. Positioning posts are inserted into the interior of the positioning grooves and are installed on the lower surface of the static template. The magnetic static template is inserted between the two guide strips to provide guidance for the installation of the magnetic static template and to limit the horizontal movement of the magnetic static template.

[0015] Furthermore, the time-delay limiting component includes a sliding sleeve that is slidably connected to the outer surface of the piston rod of the hydraulic cylinder, and a convex ring installed on the outer surface of the sliding sleeve. A spring is provided between the convex ring and the hydraulic cylinder. The spring is sleeved outside the piston rod of the hydraulic cylinder. The L-shaped push plate delays the push of the magnetic stationary template, thereby providing a buffer for the hydraulic cylinder to push the magnetic stationary template and extending the service life of the hydraulic cylinder.

[0016] Furthermore, the delay limiting component also includes an L-shaped push plate mounted on the side surface of the sliding sleeve away from the convex ring.

[0017] Furthermore, the lower surface of the L-shaped push plate away from the sliding sleeve is chamfered, and the chamfer matches the upper surface of the magnetic static template, so that the spherical protrusion at the bottom of the magnetic static template slides in the spherical concave groove until the magnetic static template moves to the accurate installation position.

[0018] Furthermore, the pressing component includes a connecting rod hinged to the outer surface of the piston rod of the hydraulic cylinder, a triangular pressing block hinged to the end of the connecting rod away from the sliding sleeve, and a guide hole provided on the sliding sleeve housing for the connecting rod to slide. The end of the triangular pressing block away from the connecting rod is hinged to the upper surface of the L-shaped push plate. By pressing down the triangular pressing block, the upper surface of the L-shaped push plate is pressed to assist the L-shaped push plate in pushing the magnetic static template.

[0019] Furthermore, the pressing component also includes a pressing roller connected to one end of the triangular pressing block near the upper surface of the L-shaped push plate via a rotating shaft.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] Firstly, this invention can quickly and accurately locate the positions of the magnetic moving template and the magnetic stationary template used for installing the mold, thereby improving the mold-locking efficiency. Specifically, when the L-shaped push plate pushes the stationary mold and the magnetic stationary template, the chamfer of the L-shaped push plate slides on the inclined surface of the magnetic stationary template that matches the chamfer, pressing down on the magnetic stationary template so that the spherical protrusion at the bottom of the magnetic stationary template slides in the spherical concave groove until the magnetic stationary template moves to the accurate installation position. At the same time, the upper surface of the L-shaped push plate is pressed down by the downward-pressing triangular pressing block.

[0022] Secondly, the present invention can provide stable installation for the magnetic moving template and the magnetic static template. Specifically, the air in the gap between the spherical protrusion and the spherical concave groove enters the first three-way pipe through the first air supply pipe and the first flexible hose. The air in the first three-way pipe enters the vacuum pump through the second air supply pipe and is discharged by the vacuum pump, so that the space between the spherical protrusion and the spherical concave groove is evacuated to a vacuum, so that the spherical protrusion is adsorbed on the spherical concave groove, thereby improving the effect of fixing the magnetic static template and the magnetic moving template on the spherical concave groove.

[0023] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a right view of the present invention;

[0026] Figure 3 This is a top view of the present invention;

[0027] Figure 4 for Figure 3 Sectional view along line AA;

[0028] Figure 5 for Figure 3 Sectional view along the BB line;

[0029] Figure 6 This is an isometric view of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the first defining component and the static mold of the present invention;

[0031] Figure 8 This is a schematic diagram of the moving mold and pressing component of the present invention.

[0032] In the diagram: 10. Frame; 20. Hydraulic lifting platform; 30. Template device; 31. Magnetic static template; 32. Positioning component; 321. Hydraulic cylinder; 322. Delayed limit component; 3221. Sliding sleeve; 3222. Convex ring; 3223. Spring; 3224. L-shaped push plate; 3225. Guide hole; 3226. Chamfer; 323. Pressing component; 3231. Connecting rod; 3232. Triangular pressing block; 3233. Pressing roller; 33. Negative pressure suction component; 331. Suction component; 3311. First hose; 3312. 3313 First air supply pipe; 3314 Second air supply pipe; 3315 Air pump; 3316 First tee pipe; 332 Venting component; 3321 Second hose; 3322 Third air supply pipe; 3323 Second tee pipe; 3324 Fourth air supply pipe; 3325 Solenoid valve; 34 Magnetic moving template; 35 Spherical protrusion; 36 Spherical concave groove; 40 Mold; 41 Static mold; 42 Moving mold; 431 First limiting component; 432 Guide bar; 433 Positioning groove; 434 Positioning post; 45 Second limiting component. Detailed Implementation

[0033] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] For an example, please refer to the appendix. Figure 1-8 A mold clamping mechanism for an injection molding machine includes a frame 10, a hydraulic lifting platform 20 is mounted on the upper surface of the frame 10, a template device 30 is provided inside the hydraulic lifting platform 20, and a mold 40 is connected to the execution end of the template device 30.

[0037] The template device 30 includes a magnetic static template 31 installed on the upper surface of the frame 10, positioning components 32 disposed on both sides of the magnetic static template 31, and a magnetic moving template 34 installed on the execution end of the hydraulic lifting platform 20. Both the magnetic static template 31 and the magnetic moving template 34 are connected to the negative pressure suction component 33.

[0038] The positioning component 32 includes a hydraulic cylinder 321 mounted on the upper surface of the frame 10, a delay limiting component 322 connected to the actuating end of the hydraulic cylinder 321, and a pressing component 323 connected to the actuating end of the delay limiting component 322.

[0039] The mold 40 includes a stationary mold 41 installed on the upper surface of the magnetic stationary template 31 and a moving mold 42 installed on the lower surface of the magnetic moving template 34. A first limiting component 43 is provided between the stationary mold 41 and the magnetic stationary template 31, and a second limiting component 44 is provided between the moving mold 42 and the magnetic moving template 34.

[0040] For details, please refer to the appendix. Figure 4 , 78. The template device 30 further includes a spherical concave groove 36 disposed on the upper surface of the frame 10 and the execution end of the hydraulic lifting platform 20, and a spherical protrusion 35 disposed inside the two spherical concave grooves 36. The two spherical protrusions 35 are respectively installed on the lower surface of the magnetic static template 31 and the upper surface of the magnetic moving template 34.

[0041] It should be noted that in this embodiment, the hydraulic lifting platform 20 and the frame 10 block the spherical protrusion 35 through the spherical concave groove 36 to improve the support effect on the magnetic static template 31 and the magnetic moving template 34, and the sliding of the spherical protrusion 35 in the spherical concave groove 36 facilitates the removal of the magnetic static template 31 and the magnetic moving template 34.

[0042] For details, please refer to the appendix. Figure 5 and 6 The negative pressure suction assembly 33 includes a suction component 331 installed at one end of the frame 10 and a venting component 332 installed at the other end of the frame 10. The suction component 331 includes a first flexible hose 3311 passing through the housing of the hydraulic lifting platform 20 and a first air supply pipe 3312 passing through the housing of the frame 10. The air inlet ends of the first flexible hose 3311 and the first air supply pipe 3312 extend into the interior of the two spherical concave grooves 36, respectively. The air outlet ends of the first flexible hose 3311 and the first air supply pipe 3312 are both connected to the air inlet end of the first three-way pipe 3315. The air outlet of the first three-way pipe 3315... The first end is connected to a second air supply pipe 3313. The outlet end of the second air supply pipe 3313 extends into the frame 10 and is connected to the air pump 3314. The venting component 332 includes a second hose 3321 passing through the housing of the hydraulic lifting platform 20 and a third air supply pipe 3322 passing through the housing of the frame 10. The inlet ends of the second hose 3321 and the third air supply pipe 3322 are both connected to the outlet end of the second three-way pipe 3323. The inlet end of the second three-way pipe 3323 is connected to a fourth air supply pipe 3324. The inlet end of the fourth air supply pipe 3324 extends into the frame 10 and is connected to the solenoid valve 3325.

[0043] It should be noted that, in this embodiment, when the vacuum pump 3314 is started, the air in the gap between the spherical protrusion 35 and the spherical concave groove 36 enters the first three-way pipe 3315 through the first air supply pipe 3312 and the first hose 3311. The air in the first three-way pipe 3315 enters the vacuum pump 3314 through the second air supply pipe 3313 and is discharged by the vacuum pump 3314, so that a vacuum is maintained between the spherical protrusion 35 and the spherical concave groove 36, so that the spherical protrusion 35 is adsorbed on the spherical concave groove 36, thereby improving the effect of fixing the magnetic static template 31 and the magnetic moving template 34 on the spherical concave groove 36.

[0044] Furthermore, when it is necessary to replace the magnetic static template 31 and the magnetic moving template 34, the opening of the solenoid valve 3325 allows outside air to pass sequentially through the solenoid valve 3325, the fourth air supply pipe 3324, and the second three-way pipe 3323, and enter the second hose 3321 and the third air supply pipe 3322. Through the second hose 3321 and the third air supply pipe 3322, the gap between the spherical concave groove 36 and the spherical protrusion 35 is connected to the outside, thereby venting the air and eliminating the vacuum state between the spherical concave groove 36 and the spherical protrusion 35, making it easier to remove the magnetic static template 31 and the magnetic moving template 34.

[0045] For details, please refer to the appendix. Figure 7 and 8 The first limiting component 43 and the second limiting component 44 have the same structure. The first limiting component 43 includes guide strips 431 disposed on both sides of the magnetic static template 31 and mounted on the upper surface of the frame 10, and a plurality of positioning grooves 432 disposed on the upper surface of the magnetic static template 31. Positioning pins 433 are inserted into the interior of the positioning grooves 432 and are mounted on the lower surface of the static template 41. The delay limiting component 322 includes a sliding sleeve 3221 that is slidably connected to the outer surface of the piston rod of the hydraulic cylinder 321, so as to... The sliding sleeve 3221 has a convex ring 3222 installed on its outer surface. A spring 3223 is provided between the convex ring 3222 and the oil cylinder 321. The spring 3223 is sleeved on the outside of the piston rod of the oil cylinder 321. The delay limiting component 322 also includes an L-shaped push plate 3224 installed on the side surface of the sliding sleeve 3221 away from the convex ring 3222. The lower surface of the L-shaped push plate 3224 away from the sliding sleeve 3221 has a chamfer 3226. The chamfer 3226 matches the upper surface of the magnetic static template 31.

[0046] It should be noted that in this embodiment, the static mold 41 is inserted into the positioning groove 432 through the positioning post 433 thereon, so that the worker can accurately locate the position of the static mold 41 on the magnetic static template 31. The magnetic static template 31 is inserted between the two guide strips 431, thereby providing guidance for the installation of the magnetic static template 31 and restricting the horizontal movement of the magnetic static template 31.

[0047] Furthermore, through the sliding of the sliding sleeve 3221 on the outer surface of the piston rod of the cylinder 321, and the energy storage performed by the spring 3223 pushed by the convex ring 3222, the sliding sleeve 3221 pushes the L-shaped push plate 3224 for a delay, and the L-shaped push plate 3224 pushes the magnetic stationary template 31 for a delay, thereby providing a buffer for the cylinder 321 to push the magnetic stationary template 31 and extending the service life of the cylinder 321;

[0048] Furthermore, when the L-shaped push plate 3224 pushes the stationary mold 41 and the magnetic stationary template 31, the chamfer 3226 of the L-shaped push plate 3224 slides on the inclined surface of the magnetic stationary template 31 that matches the chamfer 3226, pressing down on the magnetic stationary template 31, so that the spherical protrusion 35 at the bottom of the magnetic stationary template 31 slides in the spherical concave groove 36 until the magnetic stationary template 31 moves to the accurate installation position.

[0049] For details, please refer to the appendix. Figure 7 and 8 The pressing component 323 includes a connecting rod 3231 hinged to the outer surface of the piston rod of the oil cylinder 321, a triangular pressing block 3232 hinged to the end of the connecting rod 3231 away from the sliding sleeve 3221, and a guide hole 3225 provided on the housing of the sliding sleeve 3221 for the connecting rod 3231 to slide. The end of the triangular pressing block 3232 away from the connecting rod 3231 is hinged to the upper surface of the L-shaped push plate 3224. The pressing component 323 also includes a pressing roller 3233 connected to the end of the triangular pressing block 3232 near the upper surface of the L-shaped push plate 3224 via a rotating shaft.

[0050] It should be noted that in this embodiment, the sliding sleeve 3221 pushes the L-shaped push plate 3224 in a delayed manner. When the L-shaped push plate 3224 pushes the magnetic static template 31 in a delayed manner, the sliding sleeve 3221 drives the triangular pressing block 3232 to rotate on the connecting rod 3231. Thus, the downward pressing triangular pressing block 3232 presses the upper surface of the L-shaped push plate 3224 to assist the L-shaped push plate 3224 in pushing the magnetic static template 31.

[0051] The sliding sleeve 3221 allows the connecting rod 3231 to slide through the guide hole 3225;

[0052] Furthermore, the triangular pressing block 3232 presses the L-shaped push plate 3224 through the pressing roller 3233 to prevent dry friction between the L-shaped push plate 3224 and the triangular pressing block 3232.

[0053] The specific operation method of this invention is as follows:

[0054] When the injection molding machine is changing the magnetic static platen 31 and the magnetic moving platen 34, the opening of the solenoid valve 3325 allows outside air to pass through the solenoid valve 3325, the fourth air supply pipe 3324, and the second three-way pipe 3323 in sequence, and enter the second hose 3321 and the third air supply pipe 3322. Through the second hose 3321 and the third air supply pipe 3322, the gap between the spherical concave groove 36 and the spherical protrusion 35 is connected to the outside, thereby venting the air and eliminating the vacuum state between the spherical concave groove 36 and the spherical protrusion 35, making it easier to remove the magnetic static platen 31 and the magnetic moving platen 34.

[0055] After the new magnetic static template 31 and magnetic moving template 34 are combined into one, the spherical protrusion 35 on it slides in the spherical concave groove 36 to facilitate the installation of the magnetic static template 31 and magnetic moving template 34 on the frame 10. By inserting two guide bars 431, the installation of the magnetic static template 31 is guided and the horizontal movement of the magnetic static template 31 is restricted.

[0056] When the hydraulic cylinder 321 pushes the L-shaped push plate 3224, and the L-shaped push plate 3224 pushes the stationary mold 41 and the magnetic stationary template 31, the magnetic stationary template 31 is pressed down by the sliding of the chamfer 3226 of the L-shaped push plate 3224 on the inclined surface of the magnetic stationary template 31 that matches the chamfer 3226. This causes the spherical protrusion 35 at the bottom of the magnetic stationary template 31 to slide in the spherical concave groove 36 until the magnetic stationary template 31 moves to the accurate installation position. Then, the sliding sleeve 3221 pushes the L-shaped push plate 3224 for a delay. When the L-shaped push plate 3224 pushes the magnetic stationary template 31 for a delay, the sliding sleeve 3221 pushes the magnetic stationary template 31 by the sliding sleeve 3224. 21 drives the triangular pressing block 3232 to rotate on the connecting rod 3231, thereby pressing the upper surface of the L-shaped push plate 3224 through the downward pressing triangular pressing block 3232, so as to assist the L-shaped push plate 3224 in pushing the magnetic static template 31, so that the magnetic static template 31 moves to the accurate working position, opening the magnetic static template 31 and the magnetic moving template 34, so that the magnetic moving template 34 is attracted to the hydraulic lifting platform 20 and the magnetic static template 31 is attracted to the frame 10. Thus, after the magnetic moving template 34 is lifted by the hydraulic lifting platform 20, the installation of the magnetic moving template 34 and the magnetic static template 31 is completed.

[0057] The stationary mold 41 is inserted into the positioning groove 432 through the positioning pin 433, so that the worker can accurately locate the position of the stationary mold 41 on the magnetic stationary template 31. Similarly, the moving mold 42 is inserted into the positioning groove 432 through the positioning pin 433, so that the worker can accurately locate the position of the moving mold 42 on the magnetic moving template 34. Thus, the moving mold 42 is attracted by the magnetic moving template 34, and after the stationary mold 41 is attracted by the magnetic stationary template 31, the installation of the stationary mold 41 and the moving mold 42 is completed.

[0058] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A mold clamping mechanism for an injection molding machine, comprising a frame (10), characterized in that, A hydraulic lifting platform (20) is installed on the upper surface of the frame (10), and a template device (30) is provided between the frame (10) and the hydraulic lifting platform (20). The template device (30) is used to install the mold (40). The template device (30) includes a magnetic static template (31) and a magnetic moving template (34), and also includes a spherical concave groove (36) disposed on the upper surface of the frame (10) and the execution end of the hydraulic lifting platform (20), and a spherical protrusion (35) disposed inside the two spherical concave grooves (36). The two spherical protrusions (35) are respectively installed on the lower surface of the magnetic static template (31) and the upper surface of the magnetic moving template (34). The magnetic static template (31) and the magnetic dynamic template (34) are both connected to the negative pressure suction assembly (33). The template device (30) also includes positioning assemblies (32) located on both sides of the magnetic static template (31). The positioning component (32) includes a hydraulic cylinder (321) mounted on the upper surface of the frame (10), a delay limiting component (322) connected to the actuating end of the hydraulic cylinder (321), and a pressing component (323) connected to the actuating end of the delay limiting component (322). The mold (40) includes a stationary mold (41) installed on the upper surface of the magnetic stationary template (31) and a moving mold (42) installed on the lower surface of the magnetic moving template (34). A first limiting component (43) is provided between the stationary mold (41) and the magnetic stationary template (31), and a second limiting component (44) is provided between the moving mold (42) and the magnetic moving template (34). The delay limiting component (322) includes a sliding sleeve (3221) that is slidably connected to the outer surface of the piston rod of the oil cylinder (321), and a convex ring (3222) installed on the outer surface of the sliding sleeve (3221). A spring (3223) is provided between the convex ring (3222) and the oil cylinder (321), and the spring (3223) is sleeved on the outside of the piston rod of the oil cylinder (321). The delay limiting component (322) also includes an L-shaped push plate (3224) installed on the side surface of the sliding sleeve (3221) away from the convex ring (3222); The lower surface of the L-shaped push plate (3224) away from the sliding sleeve (3221) is provided with a chamfer (3226). The chamfer (3226) of the L-shaped push plate (3224) slides on the inclined surface of the magnetic static template (31) that matches the chamfer (3226), and presses down on the magnetic static template (31).

2. The injection molding machine clamping mechanism according to claim 1, characterized in that, The negative pressure suction assembly (33) includes a suction component (331) installed at one end of the frame (10) and a venting component (332) installed at the other end of the frame (10). The suction component (331) includes a first hose (3311) passing through the housing of the hydraulic lifting platform (20) and a first air supply pipe (3312) passing through the housing of the frame (10). The first hose (3311) and the first air supply pipe The air inlet of (3312) extends into the interior of the two spherical concave grooves (36), the air outlets of the first hose (3311) and the first air supply pipe (3312) are connected to the air inlet of the first three-way pipe (3315), the air outlet of the first three-way pipe (3315) is connected to the second air supply pipe (3313), and the air outlet of the second air supply pipe (3313) extends into the interior of the frame (10) and is connected to the air pump (3314).

3. The injection molding machine clamping mechanism according to claim 2, characterized in that, The venting component (332) includes a second hose (3321) passing through the housing of the hydraulic lifting platform (20) and a third air supply pipe (3322) passing through the housing of the frame (10). The air inlet ends of the second hose (3321) and the third air supply pipe (3322) are connected to the air outlet end of the second three-way pipe (3323). The air inlet end of the second three-way pipe (3323) is connected to a fourth air supply pipe (3324). The air inlet end of the fourth air supply pipe (3324) extends into the frame (10) and is connected to a solenoid valve (3325). The air outlet ends of the second hose (3321) and the third air supply pipe (3322) extend into the interior of the two spherical concave grooves (36), respectively.

4. The injection molding machine clamping mechanism according to claim 1, characterized in that, The first limiting component (43) has the same structure as the second limiting component (44). The first limiting component (43) includes guide strips (431) disposed on both sides of the magnetic static template (31) and installed on the upper surface of the frame (10), and a plurality of positioning grooves (432) disposed on the upper surface of the magnetic static template (31). Positioning posts (433) are inserted into the interior of the positioning grooves (432), and the positioning posts (433) are installed on the lower surface of the static template (41).

5. The injection molding machine clamping mechanism according to claim 1, characterized in that, The pressing component (323) includes a connecting rod (3231) hinged to the outer surface of the piston rod of the cylinder (321), a triangular pressing block (3232) hinged to one end of the connecting rod (3231) away from the sliding sleeve (3221), and a guide hole (3225) provided on the housing of the sliding sleeve (3221) for sliding of the connecting rod (3231). One end of the triangular pressing block (3232) away from the connecting rod (3231) is hinged to the upper surface of the L-shaped push plate (3224).

6. The injection molding machine clamping mechanism according to claim 5, characterized in that, The pressing component (323) also includes a pressing roller (3233) that is connected to the triangular pressing block (3232) near one end of the upper surface of the L-shaped push plate (3224) via a rotating shaft.

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