Ejection device for injection moulds

Abstract

The utility model relates to die stripping technical field discloses the stripping device of injection mold, including cooling mould, the inside bottom four corner places of cooling mould all are equipped with stripping hole, the bottom of cooling mould is provided with the base, the inside of base is provided with stripping mechanism, the left and right side of base top is provided with clamping mechanism, the clamping mechanism is used for clamping cooling mould, stripping mechanism includes two telescopic link one, the bottom of two telescopic link one all is fixedly connected in the inside bottom of base, and the top of two telescopic link one all is fixedly connected with same push -out board. In the utility model, telescopic link one pushes push -out board to ascend, hollow column adjusts position after sliding in sliding groove through sliding block, and under the action of spring, the ejector pin is in, and the top head passes through stripping hole and ejects injection molding, and the baffle limits the stroke of ejector pin, realizes the position of ejector pin according to the size of mould adjustment and smooth ejects injection molding, avoids damaging.

Description

Technical Field

[0001] This utility model relates to the field of mold demolding technology, and in particular to a demolding device for injection molds. Background Technology

[0002] Injection molds are tools used for mass production of injection-molded products. By injecting molten plastic into the mold cavity, it cools and solidifies to form parts of a specific shape. They are used in many industrial fields such as automobiles, electronics, and daily necessities. They can efficiently and accurately manufacture parts with uniform dimensions and complex structures. As an important part of the mold, the demolding device of the injection mold has the main function of smoothly pushing the molded product out of the mold after the plastic cools and solidifies, avoiding the tediousness of manual demolding and damage to the product, and ensuring the continuity and automation of the injection molding production process.

[0003] A search revealed Chinese Patent Publication No. CN221339422U, which discloses an ejection and demolding device for an injection molding die, relating to the technical field of ejection and demolding devices. The device includes a base plate with two sets of first fixing rings symmetrically arranged on the upper outer surfaces of both sides. Each set of first fixing rings has a set of first support rods on its upper outer surface. The base plate and the first support rods are connected by the first fixing rings. Each set of first support rods has a set of first connecting blocks on its upper outer surface. An injection mold is formed on the upper outer surfaces of the four sets of first connecting blocks. A support block is located on the upper outer surface of the center of the base plate, and a fixing block is located on its upper outer surface. Two sets of spring rods are located on the upper inner wall of the fixing block. This ejection and demolding device for an injection molding die uses spring rods to push the ejector blocks upwards after the injection mold is processed, thus demolding the mold. However, directly ejecting the mold during demolding can damage it and reduce its quality. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a demolding device for injection molds, which aims to improve the problem in the prior art where the mold is directly ejected during the demolding process, resulting in mold damage and reduced mold quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a demolding device for injection molds, including a cooling mold, wherein demolding holes are provided at the four corners of the bottom inner side of the cooling mold, a base is provided at the bottom of the cooling mold, a demolding mechanism is provided on the inner side of the base, and clamping mechanisms are provided on the left and right sides of the top of the base. The clamping mechanisms are used to clamp the cooling mold. The demolding mechanism includes two telescopic rods, the bottoms of which are fixedly connected to the bottom inner side of the base, and the tops of which are fixedly connected to the same push plate. The top left and right sides of the push plate are fixedly connected to fixed plates, and hollow columns are slidably connected to the front and rear sides of the top of the two fixed plates. Springs are fixedly connected to the bottom inner side of the hollow columns, and ejector pins are fixedly connected to the tops of the springs. Baffles are fixedly connected to the upper middle part of the outer wall of the ejector pins, and top heads are fixedly connected to the top of the ejector pins. A sliding component is provided on the top of the fixed plate, and a fixed component is provided on the adjacent side of the two fixed plates.

[0006] Through the above technical solution: When the injection mold demolding device is working, the bottom of the two telescopic rods on the inner side of the base is fixed to the bottom of the inner side of the base, and the top pushes the push plate to rise. The fixed plate on the top of the push plate drives the hollow column to move. The sliding block at the bottom of the hollow column slides in the sliding groove of the fixed plate. After adjusting the position, the fixed bolt passes through the fixed hole and the hollow column is fixed by the L-shaped plate. The spring in the hollow column pushes the ejector pin. The top of the ejector pin passes through the demolding hole at the bottom corner of the cooling mold and ejects the injection molded part. The baffle limits the stroke of the ejector pin. At the same time, the clamping mechanism on the top of the base drives the moving block through the telescopic rod to adjust the position of the clamping column. The rotating threaded rod causes the fixed block to drive the clamping plate to clamp the mold. The guide rod ensures that the push plate moves vertically. The sliding groove and the slider, the limit block and the limit groove respectively enhance the sliding stability and limit the stroke, so as to achieve smooth demolding.

[0007] As a further description of the above technical solution:

[0008] The clamping mechanism includes multiple clamping columns, the bottoms of which are slidably connected to the four corners of the top of the base. Each of the clamping columns has a groove on one side, and a threaded rod is rotatably connected to the top of each of the clamping columns. The bottom ends of the threaded rods pass through the clamping columns and are threaded to a fixing block. A clamping plate is fixedly connected to one side of each fixing block, and a moving component is provided at the bottom of each of the clamping columns.

[0009] Through the above technical solution: When the clamping mechanism is working, the bottoms of multiple clamping columns are slidably connected to the moving slots at the four corners of the top of the base through moving blocks. The telescopic rod pushes the moving blocks, causing the clamping columns to slide along the moving slots, realizing adaptive positioning for cooling molds of different sizes. The groove on one side of the clamping column can avoid interference with other components. After adjusting to the appropriate position, the threaded rod at the top of the clamping column is rotated. The bottom end of the threaded rod passes through the clamping column and is threadedly connected to the fixed block, driving the fixed block to move vertically along the axis of the threaded rod. The clamping plate on one side of the fixed block then approaches the outer wall of the cooling mold. When the clamping plate is tightly fitted with the mold, the limiting blocks on the left and right sides of the moving block slide in the limiting slots of the moving slots, limiting the stroke range of the clamping column and preventing excessive movement that could damage the components. At this time, the threaded pair between the threaded rod and the fixed block provides a self-locking force, keeping the clamping plate in pressure to clamp the mold, providing stable support for subsequent demolding operations, and ensuring that the mold does not shift when the ejector pin ejects the injection molded part.

[0010] As a further description of the above technical solution:

[0011] The sliding component includes sliding blocks, the tops of which are fixedly connected to the bottom of the corresponding hollow column. The tops of the two fixed plates are provided with sliding grooves, and the sliding blocks are slidably connected to the front and rear sides of the corresponding sliding grooves.

[0012] Through the above technical solution, the sliding block can slide back and forth in the sliding groove, driving the hollow column and ejector pin to move along the surface of the fixed plate, thereby making lateral fine adjustments according to the actual position of the demolding hole of the cooling mold, and adapting to molds of different specifications.

[0013] As a further description of the above technical solution:

[0014] The fixing assembly includes an L-shaped plate, one side of each of the L-shaped plates is fixedly connected to one side of the sliding block, and multiple fixing holes are provided on adjacent sides of the two fixing plates. One side of each of the multiple sliding blocks is rotatably connected to a fixing bolt, and one end of each fixing bolt passes through the fixing hole and is rotatably connected to the interior of the corresponding fixing hole.

[0015] The above technical solution involves a fixing bolt that passes through an L-shaped plate on one side of the sliding block and is screwed into a fixing hole in the fixing plate. The axial force generated by tightening the thread makes the sliding block and the fixing plate fit tightly together.

[0016] As a further description of the above technical solution:

[0017] The moving component includes multiple moving blocks, the tops of which are fixedly connected to the bottoms of corresponding clamping columns. Two moving slots are opened on the left and right sides of the top of the base. One side of each of the multiple moving slots is fixedly connected to a telescopic rod II, and the other end of each of the multiple telescopic rod II is fixedly connected to one side of the corresponding moving block.

[0018] Through the above technical solution: the telescopic rod 2 pushes the moving block to slide in the moving groove, driving the clamping column to move horizontally along the top of the base, thereby realizing the adjustment of the spacing between the clamping columns on the left and right sides.

[0019] As a further description of the above technical solution:

[0020] The two fixed plates have sliding grooves on their left and right sides, and the sliding blocks are fixedly connected to sliders on their left and right sides.

[0021] The above technical solution involves embedding the slider into the groove of the fixed plate, which restricts the movement trajectory of the hollow column and prevents the ejector pin from deviating during the ejection process.

[0022] As a further description of the above technical solution:

[0023] A guide rod is fixedly connected to the bottom inner side of the base, and the top end of the guide rod passes through the bottom of the push plate.

[0024] The above technical solution involves fixing the guide rod to the bottom of the base and vertically penetrating the push plate, thus restricting the push plate to only move in a straight line along the axis of the guide rod.

[0025] As a further description of the above technical solution:

[0026] Limiting grooves are provided on the left and right sides of the interior of the multiple movable slots, and limiting blocks are fixedly connected to the left and right sides of the multiple movable blocks.

[0027] The above technical solution involves embedding the limiting block into the limiting groove of the moving groove, forcing the moving block to move only in a straight line along the length of the moving groove, thus preventing the clamping column from shifting laterally when moving horizontally.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, when demolding is required, the telescopic rod is activated to push the push plate upward. The hollow column slides and adjusts its position in the sliding groove through the sliding block, and is then fixed by the fixing bolt through the fixing hole and the L-shaped plate. Under the action of the spring, the ejector pin passes through the demolding hole and ejects the injection molded part. The baffle restricts the ejector pin stroke. The cooperation of the ejector pin and the spring realizes the effect of adjusting the position of the ejector pin according to the mold size and smoothly ejecting the injection molded part, avoiding damage.

[0030] 2. In this utility model, when it is necessary to clamp the mold, the telescopic rod pushes the moving block to slide in the moving groove, thereby driving the clamping column to adjust its position. After the adjustment is in place, the threaded rod is rotated, and the threaded connection of the fixed block drives the clamping plate to move up and down, so that it fits tightly against the outer wall of the mold. This realizes automatic adjustment and firm clamping of the mold according to the mold size, preventing movement during demolding. Attached Figure Description

[0031] Figure 1 This is a perspective view of the demolding device for the injection mold proposed in this utility model;

[0032] Figure 2 This is a front view of the demolding device for the injection mold proposed in this utility model;

[0033] Figure 3 This is a structural exploded view of the demolding device for the injection mold proposed in this utility model;

[0034] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0035] Figure 5 This is an exploded view of the clamping mechanism of the demolding device for injection molds proposed in this utility model.

[0036] Legend:

[0037] 1. Cooling mold; 2. Demolding hole; 3. Base; 4. Demolding mechanism; 401. Telescopic rod one; 402. Push plate; 403. Fixing plate; 404. Hollow column; 405. Spring; 406. Ejector pin; 407. Baffle; 408. Top head; 409. Sliding assembly; 4091. Sliding block; 4092. Sliding groove; 410. Fixing assembly; 4101. L-shaped plate; 4102. Fixing hole; 4103. Fixing bolt; 5. Clamping mechanism; 501. Clamping column; 502. Groove; 503. Threaded rod; 504. Fixing block; 505. Clamping plate; 506. Moving assembly; 5061. Moving block; 5062. Moving groove; 5063. Telescopic rod two; 6. Slide groove; 7. Slider; 8. Guide rod; 9. Limiting block; 10. Limiting groove. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a demolding device for an injection mold, including a cooling mold 1. Demolding holes 2 are provided at the four corners of the bottom inner side of the cooling mold 1, through which an ejector head 408 passes to eject the injection molded part. A base 3 is provided at the bottom of the cooling mold 1 to support the entire device. A demolding mechanism 4 is provided inside the base 3 to eject the injection molded part. Clamping mechanisms 5 are provided on the left and right sides of the top of the base 3 to clamp the cooling mold 1 and prevent the mold from moving during demolding. The demolding mechanism 4 includes two telescopic rods 401, the bottom of which are fixedly connected to the bottom inner side of the base 3. The top ends are connected to a push plate 402 to provide upward thrust. The top ends of the two telescopic rods 401 are fixedly connected to the same push plate 402 for transmitting the telescopic rods. The thrust of the push plate 401 causes the fixed plate 403 to rise. Fixed plates 403 are fixedly connected to the top left and right sides of the push plate 402 for mounting hollow columns 404 and providing support. Hollow columns 404 are slidably connected to the top front and rear sides of the two fixed plates 403, allowing for adjustment of their position to align with different ejection holes 2. Springs 405 are fixedly connected to the inner bottom of multiple hollow columns 404 to provide cushioning force when ejector pins 406 are ejected, preventing damage to the injection molded part. Ejector pins 406 are fixedly connected to the top of multiple springs 405 to pass through the ejection hole 2 and eject the injection molded part. Baffles 407 are fixedly connected to the upper middle part of the outer wall of multiple ejector pins 406 to limit the ejection distance of the ejector pins 406 and prevent excessive ejection. A top head 408 is fixedly connected for direct contact and ejection of the injection molded part, increasing the ejection force area. A sliding component 409 is provided on the top of the fixed plate 403 for sliding adjustment of the hollow column 404. A fixed component 410 is provided on the adjacent side of the two fixed plates 403 for locking the adjusted position of the hollow column 404. The sliding component 409 includes sliding blocks 4091. The tops of multiple sliding blocks 4091 are respectively fixedly connected to the bottom of the corresponding hollow column 404 for connecting the hollow column 404 and sliding within the sliding groove 4092. The tops of both fixed plates 403 are provided with sliding grooves 4092 for sliding of the sliding blocks 4091 to achieve position adjustment of the hollow column 404. Multiple sliding blocks 4091 are respectively connected to the corresponding sliding grooves 4092. The internal front and rear sides of 092 are slidably connected, allowing the hollow column 404 to slide and adjust in the front and rear direction. The fixing component 410 includes an L-shaped plate 4101, one side of which is fixedly connected to one side of the sliding block 4091 to connect the sliding block 4091 and the fixing plate 403. Multiple fixing holes 4102 are provided on adjacent sides of the two fixing plates 403 for cooperating with fixing bolts 4103 to fix the sliding block 4091. Fixing bolts 4103 are rotatably connected to one side of the multiple sliding blocks 4091 to pass through the fixing holes 4102 and tighten to fix the position of the sliding block 4091. One end of each fixing bolt 4103 passes through the fixing hole 4102 and is rotatably connected to the interior of the corresponding fixing hole 4102.The sliding block 4091 is fixed to the fixed plate 403 by means of a threaded connection;

[0040] Specifically, when using the injection mold demolding device, the bottom of the two telescopic rods 401 on the inner side of the base 3 is fixed to the bottom of the inner side of the base 3, and the top pushes the push plate 402 to rise. The fixed plate 403 on the top of the push plate 402 drives the hollow column 404 to move. The sliding block 4091 at the bottom of the hollow column 404 slides in the sliding groove 4092 of the fixed plate 403. After adjusting the position, the fixing bolt 4103 on one side of the sliding block 4091 passes through the fixing hole 4102 of the fixed plate 403, and with the help of the L-shaped Plate 4101 fixes the hollow column 404. Spring 405 inside the hollow column 404 pushes ejector pin 406. The ejector head 408 at the top of ejector pin 406 passes through the demolding hole 2 at the bottom corner of cooling mold 1 and ejects the injection molded part. Baffle 407 restricts the stroke of ejector pin 406. At the same time, clamping mechanism 5 at the top of base 3 drives moving block 5061 through telescopic rod 2 5063 to adjust the position of clamping column 501. Rotating threaded rod 503 causes fixed block 504 to drive clamping plate 505 to clamp the mold, ensuring stable demolding.

[0041] Reference Figure 1 and Figure 5 The clamping mechanism 5 includes multiple clamping posts 501, the bottoms of which are slidably connected to the four corners of the top of the base 3, allowing for position adjustment of the clamping posts 501 on the base 3 to accommodate cooling molds 1 of different sizes. Each clamping post 501 has a groove 502 on one side to prevent interference with other components during movement and ensure smooth sliding. Each clamping post 501 has a threaded rod 503 rotatably connected to its top, driving the fixed block 504 to move up and down via rotation. The bottom ends of the threaded rods 503 penetrate the clamping posts 501 and are threadedly connected to the fixed blocks 504, converting the rotational motion of the threaded rods 503 into the vertical motion of the fixed blocks 504. Each fixed block 504 has a clamping plate 505 fixedly connected to one side, which, under the action of the fixed blocks 504, abuts against and clamps the cooling mold. 1. Each of the multiple clamping columns 501 has a movable component 506 at its bottom for driving the clamping column 501 to slide on the base 3. The movable component 506 includes multiple movable blocks 5061. The top of each movable block 5061 is fixedly connected to the bottom of the corresponding clamping column 501 for connecting the clamping column 501 and sliding in the movable groove 5062. Two movable grooves 5062 are opened on the left and right sides of the top of the base 3 for providing sliding tracks for the movable blocks 5061. A telescopic rod 5063 is fixedly connected to one side of the interior of each of the multiple movable grooves 5062 for pushing the movable block 5061 to slide by telescopic extension. The other end of each telescopic rod 5063 is fixedly connected to one side of the corresponding movable block 5061 for transmitting the thrust of the telescopic rod 5063 to the movable block 5061, thereby driving the clamping column 501 to move.

[0042] Specifically, when the clamping mechanism 5 is working, one end of the telescopic rod 5063 is fixed inside the moving groove 5062 on the left and right sides of the top of the base 3, and the other end pushes the moving block 5061, so that the clamping column 501 fixed at the top slides at the four corners of the top of the base 3. The spacing of the clamping columns 501 can be adjusted by the extension and retraction of the telescopic rod 5063 to adapt to the size of the cooling mold 1. The groove 502 on one side of the clamping column 501 can avoid interference with other parts during movement and ensure smooth sliding. After adjusting to the appropriate position, the threaded rod 503 at the top of the clamping column 501 is rotated. The end of the clamping column 501 is threadedly connected to the fixed block 504. As the threaded rod 503 rotates, the fixed block 504 drives the clamping plate 505 on one side to move vertically until the clamping plate 505 is tightly against the outer wall of the cooling mold 1. At this time, the thrust of the telescopic rod 5063 in the moving component 506 and the pressure of the clamping plate 505 driven by the threaded rod 503 form a stable clamping force. Through the sliding cooperation between the moving block 5061 and the moving groove 5062, and the threaded transmission between the threaded rod 503 and the fixed block 504, the cooling mold 1 is quickly positioned and firmly clamped, providing stable support for the demolding operation.

[0043] Reference Figure 3 , Figure 4 and Figure 5 Both fixed plates 403 have grooves 6 on their left and right sides for sliding sliders 7 to enhance the stability of the sliding assembly 409. Multiple sliding blocks 4091 are fixedly connected to sliders 7 on their left and right sides, allowing them to slide within the grooves 6 and providing lateral support for the sliding of the hollow column 404, reducing swaying. A guide rod 8 is fixedly connected to the bottom inner side of the base 3 to guide the movement of the push plate 402, ensuring its vertical lifting. The top of the guide rod 8 penetrates the bottom of the push plate 402, allowing it to move vertically. The through-fit of the moving plate 402 restricts the push plate 402 to move only along the axis of the guide rod 8, preventing deflection. Limiting grooves 10 are provided on the left and right sides of the interior of the multiple moving grooves 5062 to provide sliding tracks for the limiting blocks 9 and limit the sliding range of the moving blocks 5061. The left and right sides of the multiple moving blocks 5061 are fixedly connected to the limiting blocks 9, which can slide in the limiting grooves 10 to prevent the moving blocks 5061 from sliding out of the moving grooves 5062, and at the same time mechanically limit the sliding stroke of the moving blocks 5061.

[0044] Specifically, the slider 7 is embedded in the groove 6 inside the fixed plate 403, providing lateral support when the hollow column 404 slides, reducing swaying and preventing the slider block 4091 from leaving the track. The guide rod 8 is fixed to the bottom of the base 3 and passes through the push plate 402. When the telescopic rod 1 401 drives the push plate 402 to rise or fall, it restricts the push plate 402 to move only along the direction of the guide rod 8, avoiding uneven ejection due to skew. The limiting block 9 slides in the limiting groove 10 to prevent the moving block 5061 from sliding out of the moving groove 5062. At the same time, it provides mechanical limit when the telescopic rod 2 5063 extends and retracts, protecting the components from damage due to excessive travel.

[0045] Working principle: When demolding is required, the two telescopic rods 401 on the inner side of the base 3 are activated. Their bottoms are fixed to the bottom of the inner side of the base 3, and their tops push the push plate 402 upward. The fixing plates 403 on the left and right sides of the top of the push plate 402 rise accordingly. The hollow columns 404 on the front and rear sides of the top of the fixing plate 403 slide in the sliding groove 4092 on the top of the fixing plate 403 through the sliding block 4091 at the bottom. The position can be adjusted according to the mold size. After adjustment, rotate the fixing bolt 4103 on one side of the sliding block 4091 so that one end of it passes through the fixing hole 4102 on the adjacent side of the fixing plate 403 and is rotatably connected to the hole. The L-shaped plate 4101 fixes the position of the hollow column 404. The spring 405 at the bottom of the inner side of the hollow column 404 is connected to the ejector pin 406. The baffle 407 in the upper middle part of its outer wall can limit the ejection distance of the ejector pin 406. The ejector head 408 at the top of the ejector pin 406 is aligned with the demolding holes 2 at the four corners of the bottom of the inner side of the cooling mold 1. As the push plate 402 rises, the ejector head 408 passes through the demolding hole 2 and hits the bottom of the injection molded part. The spring 405 provides buffer force to avoid damage to the injection molded part during ejection. At the same time, the clamping mechanism 5 on the left and right sides of the top of the base 3 firmly clamps the cooling mold 1 to prevent the mold from moving during demolding. Finally, through the pushing force of the telescopic rod 401 and the ejection action of the ejector pin 406, the injection molded part is smoothly removed from the cooling mold 1.

[0046] Furthermore, within the movable grooves 5062 on the left and right sides of the top of the base 3, one end of the telescopic rod 5063 is fixed to one side inside the movable groove 5062, while the other end pushes the movable block 5061. The clamping column 501 fixed at the top of the movable block 5061 then slides at the four corners of the top of the base 3. The position of the clamping column 501 can be adjusted according to the size of the cooling mold 1. After adjustment, the threaded rod 503 at the top of the clamping column 501 is rotated. The bottom end of the threaded rod 503 passes through the clamping column 501 and is threadedly connected to the fixed block 504, thereby driving the clamping on one side of the fixed block 504. The plate 505 moves up and down, so that the clamping plate 505 fits tightly against the outer wall of the cooling mold 1. The groove 502 on one side of the clamping column 501 can avoid interference with other parts during movement, ensuring that the clamping column 501 slides smoothly. The moving block 5061 is driven by the telescopic rod 5063 to move and adjust the position of the clamping column 501. Then, the threaded connection between the threaded rod 503 and the fixed block 504 drives the clamping plate 505 to clamp the mold, thereby achieving a firm clamping of the cooling mold 1, preventing the mold from moving during demolding, and ensuring the stable demolding operation.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A demolding device for an injection mold, comprising a cooling mold (1), characterized in that: The cooling mold (1) has four demolding holes (2) at the bottom of the inner side. The cooling mold (1) has a base (3) at the bottom. The base (3) has a demolding mechanism (4) on its inner side. The base (3) has clamping mechanisms (5) on its top left and right sides. The clamping mechanisms (5) are used to clamp the cooling mold (1). The demolding mechanism (4) includes two telescopic rods (401). The bottom of the two telescopic rods (401) is fixedly connected to the bottom of the inner side of the base (3). The top of the two telescopic rods (401) is fixedly connected to the same push plate (402). The top left and right sides of the push plate (402) are fixedly connected to the fixing plate (403). The front and rear sides of the top of the two fixing plates (403) are slidably connected to hollow columns (404). The bottom inner side of the hollow columns (404) is fixedly connected to springs (405). The top of the springs (405) is fixedly connected to ejector pins (406). The upper middle part of the outer wall of the ejector pins (406) is fixedly connected to baffles (407). The top of the ejector pins (406) is fixedly connected to top heads (408). The top of the fixing plate (403) is provided with a sliding component (409). The adjacent side of the two fixing plates (403) is provided with a fixing component (410).

2. The demolding device for injection molds according to claim 1, characterized in that: The clamping mechanism (5) includes multiple clamping columns (501). The bottoms of the multiple clamping columns (501) are slidably connected to the four corners of the top of the base (3). A groove (502) is provided on one side of each of the multiple clamping columns (501). A threaded rod (503) is rotatably connected to the top of each of the multiple clamping columns (501). The bottom ends of the multiple threaded rods (503) pass through the clamping column (501) and are threadedly connected to a fixing block (504). A clamping plate (505) is fixedly connected to one side of each of the multiple fixing blocks (504). A moving component (506) is provided at the bottom of each of the multiple clamping columns (501).

3. The demolding device for injection molds according to claim 1, characterized in that: The sliding component (409) includes a sliding block (4091), the tops of the multiple sliding blocks (4091) are respectively fixedly connected to the bottom of the corresponding hollow column (404), and the tops of the two fixed plates (403) are provided with sliding grooves (4092), and the multiple sliding blocks (4091) are respectively slidably connected to the front and rear sides of the interior of the corresponding sliding grooves (4092).

4. The demolding device for injection molds according to claim 3, characterized in that: The fixing component (410) includes an L-shaped plate (4101), one side of each of the L-shaped plates (4101) is fixedly connected to one side of the sliding block (4091), and multiple fixing holes (4102) are provided on adjacent sides of the two fixing plates (403). A fixing bolt (4103) is rotatably connected to one side of each of the multiple sliding blocks (4091), and one end of each of the multiple fixing bolts (4103) passes through the fixing hole (4102) and is rotatably connected to the interior of the corresponding fixing hole (4102).

5. The demolding device for injection molds according to claim 2, characterized in that: The moving component (506) includes multiple moving blocks (5061), the tops of the multiple moving blocks (5061) are respectively fixedly connected to the bottom of the corresponding clamping column (501), and the top left and right sides of the base (3) are provided with two moving slots (5062), and one side of the interior of each of the multiple moving slots (5062) is fixedly connected to a telescopic rod (5063), and the other end of each of the multiple telescopic rods (5063) is respectively fixedly connected to one side of the corresponding moving block (5061).

6. The demolding device for injection molds according to claim 3, characterized in that: The two fixed plates (403) have grooves (6) on their left and right sides, and the multiple sliding blocks (4091) are fixedly connected to sliders (7) on their left and right sides.

7. The demolding device for injection molds according to claim 1, characterized in that: A guide rod (8) is fixedly connected to the bottom inner side of the base (3), and the top end of the guide rod (8) penetrates the bottom of the push plate (402).

8. The demolding device for injection molds according to claim 5, characterized in that: Limiting grooves (10) are provided on the left and right sides of the interior of the multiple moving slots (5062), and limiting blocks (9) are fixedly connected to the left and right sides of the multiple moving blocks (5061).

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