An injection blow molding device for producing plastic caps for glass bottles that facilitates material injection.

Abstract

This utility model discloses an injection blow molding device for producing plastic caps for glass bottles, which facilitates material injection. The device includes a main body comprising a base, two support rods fixed to the top of the base, a mold clamping assembly fixed to the top of the two support rods, and an injection molding assembly fixed to the top of the mold clamping assembly. A blow molding assembly is disposed between the two support rods. The blow molding assembly includes a box-shaped push block, an air inlet fixed to the front of the box-shaped push block, and multiple inserts integrally fixed to the top of the box-shaped push block. The top of each insert has an air outlet communicating with the interior of the box-shaped push block. This utility model, through a series of structural features, allows for the automatic extrusion and demolding of multiple bottle caps by utilizing the downward force of the blow molding assembly after mold opening. This eliminates the need for manual demolding, saving time and effort and improving demolding convenience, automation, and efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of injection blow molding equipment, specifically to an injection blow device for producing plastic caps for glass bottles that facilitates material injection. Background Technology

[0002] Injection blow molding is a manufacturing process for forming hollow plastic parts, such as the production of plastic caps for common cosmetic bottles and other glass bottles. Traditional injection blow molding equipment often uses a horizontal injection method when producing plastic caps. When the injection liquid is injected into the cavity, there will be a situation where the injection liquid cannot completely fill the cavity, which will affect the quality of the finished product.

[0003] In response, a search revealed that CN212385988U discloses an injection blow molding device for producing plastic caps for milk bottles that facilitates injection. The device includes a base with two symmetrical support pillars on top. A first cylinder is bolted to the center of the top surface of the base. A blow molding mechanism is located between the two support pillars. A support frame is located above the two support pillars, and a second cylinder is bolted to two opposite sides of the support frame. This injection blow molding device for producing plastic caps for milk bottles, through its vertically arranged injection mechanism, changes the traditional horizontal injection molding method of injection blow molding equipment. It allows the injected liquid to fill the cavity under gravity, facilitating the blow molding mechanism to shape the injected liquid, thus ensuring product quality and reducing the rate of defective products.

[0004] The aforementioned technology discloses an injection blow molding device for producing milk bottle plastic caps that facilitates injection. Through its injection molding mechanism, blow molding mechanism, mold closing mechanism, and second cylinder, it achieves vertical injection molding and air-assisted molding after mold closing. Vertical injection utilizes gravity to better inject the liquid downwards, while air-assisted molding helps to better fill the mold cavity, improving product quality. However, it still has the following shortcomings in use:

[0005] The device lacks an automatic demolding mechanism for multiple molded bottle caps during the downward movement after mold opening, requiring manual pulling and demolding by personnel, which is time-consuming and labor-intensive, and the demolding efficiency and convenience are poor. In view of this, this application proposes an injection blow molding device for the production of plastic caps for glass bottles that is easy to inject, in order to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide an injection blowing device for the production of plastic caps for glass bottles that facilitates material injection, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an injection blow molding device for producing plastic caps for glass bottles that facilitates material injection, comprising an injection blow molding device body, the injection blow molding device body comprising a base, two support rods fixed to the top of the base, a mold clamping assembly fixed to the top of the two support rods, and an injection molding assembly fixed to the top of the mold clamping assembly, wherein a blow molding assembly is provided between the two support rods, the blow molding assembly comprising a box-shaped push block, an air inlet connected to and fixed to the front side of the box-shaped push block, and a plurality of inserts integrally fixed to the top of the box-shaped push block, wherein the top of the inserts is provided with an air outlet that communicates with the interior of the box-shaped push block;

[0008] The top of the base is fixedly equipped with a multi-stage electric telescopic rod whose extended end is fixedly connected to the bottom of the box-shaped push block; the multi-stage electric telescopic rod is used to drive the box-shaped push block to move up and down.

[0009] The box-shaped push block is equipped with a leverage-type self-demolding mechanism, which includes:

[0010] The lifting plate is located below the box-shaped push block;

[0011] The push-out demolding assembly consists of multiple sets, all of which are fixedly connected to the top of the lifting plate, with multiple inserts movably fitted onto the corresponding push-out demolding assembly.

[0012] The vertical missile support assembly consists of two sets, each fixedly connected to the bottom of the box-shaped push block. The lifting plate is sleeved on the two vertical missile support assemblies. The vertical missile support assembly is used to vertically guide and elastically support the lifting plate.

[0013] The limiting blocks are in two sets and both are in active contact with the bottom of the lifting plate; the top push demolding assembly is used to drive the lifting plate to move up and down as the box-shaped push block moves up and down, and when the lifting plate moves down to contact the top of the limiting block and is blocked and restricted by it, and the box-shaped push block continues to move down, it squeezes and demolds the molded bottle cap.

[0014] The connecting sleeve consists of two sets, each fixedly connected to one side of the two limiting blocks, and is connected to the outside of the corresponding support rod.

[0015] Preferably, the connecting sleeve is welded to the outside of the corresponding support rod.

[0016] Preferably, the connecting sleeve is adjustablely connected to the outside of the corresponding support rod.

[0017] Preferably, the connecting sleeve is movably fitted onto the outside of the corresponding support rod, and the opposing sides of the two support rods are tightly pressed with knob bolts. The opposing sides of the two connecting sleeves are provided with threaded holes, which are threadedly connected to the corresponding knob bolts.

[0018] Preferably, the push-out demolding assembly includes an annular push block and two connecting rods. The top of the insert block has an annular groove, and the annular push block is movably fitted into the corresponding annular groove. The bottom of the annular push block is fixedly connected to the top of the corresponding two connecting rods. The bottom ends of the multiple connecting rods are all fixedly connected to the top of the lifting plate. The insert block is slidably fitted onto the corresponding two connecting rods, and the box-shaped push block is slidably fitted onto the multiple connecting rods.

[0019] Preferably, the vertical missile support assembly includes T-shaped guide rods and springs. Both T-shaped guide rods are fixedly connected to the bottom of the box-shaped push block. The lifting plate is slidably sleeved on the two T-shaped guide rods. The springs are fixedly connected between the top of the lifting plate and the bottom of the box-shaped push block. The two springs are respectively movably sleeved on the corresponding T-shaped guide rods.

[0020] Preferably, vertical guide sleeves are fixedly connected to both sides of the box-shaped push block, and the vertical guide sleeves are slidably sleeved on the corresponding support rods.

[0021] Preferably, the top of the lifting plate is provided with an avoidance through hole, and the multi-stage electric telescopic rod is located inside the avoidance through hole and does not contact its inner side.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. Through the coordinated use of the set blow molding components, multi-stage electric telescopic rods, support rods, vertical guide sleeves, push demolding components, lifting plates, vertical missile support components, limit blocks and connecting sleeves, multiple bottle caps can be automatically squeezed and demolded by the downward power of the blow molding components after the mold is opened. No manual demolding work is required, saving time and effort, and improving demolding convenience, automation and efficiency.

[0024] 2. By using a connecting sleeve, threaded hole, and knob-type bolt in a different manner, the support height of the limit block against the lifting plate can be flexibly adjusted. This allows for flexible adjustment of the limit block height according to the maximum retraction stroke of the multi-stage electric telescopic rod, avoiding the phenomenon that the mold cannot be effectively demolded after the mold opens and descends due to installation deviations. It also avoids the phenomenon that the multi-stage electric telescopic rod cannot be adapted to the application due to deviations when it is replaced later, further improving the flexibility of use.

[0025] This utility model features a series of structures that allow multiple bottle caps to be automatically extruded and demolded by the downward force of the blow molding component after mold opening. This eliminates the need for manual demolding by personnel, saving time and effort and improving demolding convenience, automation, and efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an injection blowing device for producing plastic caps for glass bottles, as proposed in Embodiment 1 of this utility model;

[0027] Figure 2 for Figure 1 Partial cross-sectional structural schematic diagram;

[0028] Figure 3 A three-dimensional structural diagram of the blow molding component and the annular pusher block connector of an injection blow molding device for producing plastic caps of glass bottles, as proposed in Embodiment 1 of this utility model;

[0029] Figure 4 This is a cross-sectional structural diagram of an injection blowing device for producing plastic caps for glass bottles, as proposed in Embodiment 2 of this utility model.

[0030] In the diagram: 100, mold closing assembly; 200, injection molding assembly; 1, base; 101, box-shaped push block; 102, insert block; 103, vent hole; 104, air inlet; 2, multi-stage electric telescopic rod; 201, vertical guide sleeve; 202, support rod; 3, annular push block; 301, connecting rod; 302, lifting plate; 303, T-shaped guide rod; 304, spring; 305, clearance through hole; 4, limit block; 401, connecting sleeve; 402, knob-type bolt. Detailed Implementation

[0031] 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.

[0032] Example 1

[0033] like Figure 1 As shown:

[0034] This embodiment proposes an injection blow molding device for producing plastic caps for glass bottles that facilitates material injection. The device includes a main body, which comprises a base 1, two support rods 202 fixed to the top of the base 1, a mold clamping assembly 100 fixed to the top of the two support rods 202, and an injection molding assembly 200 fixed to the top of the mold clamping assembly 100. A blow molding assembly is disposed between the two support rods 202. The blow molding assembly includes a box-shaped pusher block 101, an air inlet 104 connected to and fixed to the front side of the box-shaped pusher block 101, and a plurality of inserts 102 integrally fixed to the top of the box-shaped pusher block 101. The top of the inserts 102 is provided with an air outlet 103 that communicates with the interior of the box-shaped pusher block 101.

[0035] In this implementation plan: The existing device {publication (announcement) number}: CN212385988U discloses an injection blow molding device for producing milk bottle plastic caps that facilitates injection. The extrusion mold assembly 100, blow molding assembly and injection molding assembly 200 in this application adopt the same technical means as in this prior art. These technical means will not be described in detail here. This application further improves the main body of this prior art. For details, please refer to the disclosed technology below. In order to solve the technical problems existing in this prior art, such as the "the device lacks an automatic demolding mechanism for multiple molded bottle caps when moving down after mold opening, which requires personnel to manually pull and demold, which is time-consuming and labor-intensive, and the demolding efficiency and convenience are not good", this problem is obviously a real and difficult problem to solve. Therefore, in order to solve this technical problem, a leveraged self-demolding mechanism is added to this application.

[0036] It should be noted that the mold clamping assembly 100, the blow molding assembly, and the injection molding assembly 200 are technologies already disclosed in the prior art, and therefore their internal structures are not fully described. The accessories used are disclosed in publication number CN212385988U, and their performance can be referred to publication number CN212385988U (i.e., the "blow molding mechanism, push block, air cavity, blow assembly, insert block, protrusion, air outlet, air inlet; bearing frame, second cylinder, mold clamping mechanism, fixed plate, mold, sliding hole, closed cavity, cavity, injection groove, slide rod; injection molding mechanism, bracket, transition tube, extension tube, and liquid inlet tube components" disclosed in this prior art).

[0037] Furthermore:

[0038] like Figures 1 to 3 As shown, a multi-stage electric telescopic rod 2 with its extended end fixedly connected to the bottom of the box-shaped push block 101 is fixedly installed on the top of the base 1; the multi-stage electric telescopic rod is used to drive the box-shaped push block 101 to move up and down.

[0039] A lever-assisted self-demolding mechanism is installed on the box-shaped push block 101. The lever-assisted self-demolding mechanism includes:

[0040] The lifting plate 302 is located below the box-shaped pusher block 101;

[0041] The push-out demolding assembly consists of multiple sets, all of which are fixedly connected to the top of the lifting plate 302. Multiple inserts 102 are movably sleeved on the corresponding push-out demolding assembly.

[0042] The vertical missile support assembly consists of two sets, both of which are fixedly connected to the bottom of the box-shaped push block 101. The lifting plate 302 is sleeved on the two vertical missile support assemblies. The vertical missile support assembly is used to vertically guide and elastically support the lifting plate 302.

[0043] The limiting block 4 consists of two sets, both of which are in active contact with the bottom of the lifting plate 302; the top push demolding assembly is used to drive the lifting plate 302 to move up and down as the box-shaped push block 101 moves up and down, and when the lifting plate 302 moves down to contact the top of the limiting block 4 and is blocked and restricted by it, and when the box-shaped push block 101 continues to move down, it squeezes and demolds the formed bottle cap.

[0044] The connecting sleeve 401 consists of two sets, which are fixedly connected to the opposite side of the two limiting blocks 4 respectively. The connecting sleeve 401 is connected to the outside of the corresponding support rod 202.

[0045] In this embodiment, vertical guide sleeves 201 are fixedly connected to both sides of the box-shaped push block 101. The vertical guide sleeves 201 are slidably sleeved on the corresponding support rods 202, which serves as a vertical sliding guide for the box-shaped push block 101. An avoidance through hole 305 is provided at the top of the lifting plate 302. The multi-stage electric telescopic rod 2 is located in the avoidance through hole 305 and does not contact its inner side, which serves as a passage for the multi-stage electric telescopic rod 2 to pass through.

[0046] Furthermore, the connecting sleeve 401 is welded to the outside of the corresponding support rod 202.

[0047] Furthermore, such as Figure 1 , 2 As shown in Figure 3, the push-out demolding assembly includes an annular push block 3 and two connecting rods 301. The top of the insert block 102 is provided with an annular groove. The annular push block 3 is movably fitted in the corresponding annular groove. The bottom of the annular push block 3 is fixedly connected to the top of the corresponding two connecting rods 301. The bottom ends of the multiple connecting rods 301 are all fixedly connected to the top of the lifting plate 302. The insert block 102 is slidably fitted on the corresponding two connecting rods 301. The box-shaped push block 101 is slidably fitted on the multiple connecting rods 301.

[0048] In this embodiment, two first vertical guide holes are provided on the bottom inner wall of the annular groove, which are respectively slidably fitted to the outer side of the corresponding connecting rod 301, so as to allow the connecting rod 301 to pass through and guide its vertical sliding. The bottom of the box-shaped push block 101 is provided with multiple second vertical guide holes, and a sealing sleeve is adhesively fitted in the second vertical guide holes. The inner side of the sealing sleeve is slidably fitted to the outer side of the corresponding connecting rod 301, so as to guide the connecting rod 301 vertically.

[0049] In this embodiment, the annular pusher 3 and two connecting rods 301 cooperate to move the insert 102 upward into the mold closing assembly 100 for mold closing or downward separation as the box-shaped pusher 101 moves up and down. The insert 102 then moves the lifting plate 302 up and down as a whole through the corresponding annular pusher 3 and the two connecting rods 301. When the lifting plate 302 moves down to be blocked by the two limit blocks 4, the insert 102 continues to move down and separates from the corresponding annular pusher 3, and slides down on the connecting rods 301. As the relative displacement between the insert 102 and the annular pusher 3 causes separation, the annular pusher 3 causes the bottle cap to be squeezed and separated from the insert 102. The annular pusher 3 is used to demold the bottle cap, achieving the effect of automatically squeezing and demolding the bottle cap by using the downward power after mold opening. This eliminates the need for manual demolding by personnel, improving the convenience, automation, and efficiency of demolding.

[0050] Furthermore, such as Figure 1 and 2 As shown, the vertical missile support assembly includes a T-shaped guide rod 303 and a spring 304. Both T-shaped guide rods 303 are fixedly connected to the bottom of the box-shaped push block 101. The lifting plate 302 is slidably sleeved on the two T-shaped guide rods 303. The spring 304 is fixedly connected between the top of the lifting plate 302 and the bottom of the box-shaped push block 101. The two springs 304 are respectively movably sleeved on the corresponding T-shaped guide rods 303.

[0051] In this embodiment, the top of the lifting plate 302 has two round guide holes that are respectively slidably fitted onto the outer side of the corresponding T-shaped guide rod 303, which serve to guide the vertical sliding of the lifting plate 302.

[0052] In this embodiment, the T-shaped guide rod 303 and the spring 304 work together. During the downward movement, the lifting plate 302 is blocked by the limiting block 4. When the box-shaped push block 101 slides downward on the multiple connecting rods 301, the box-shaped push block 101 drives the two T-shaped guide rods 303 to slide downward in the lifting plate 302, and compresses and stores energy in the two springs 304. The tension force formed by the compression of the springs 304 can be used to elastically push and drive the lifting plate 302 to reset when the box-shaped push block 101 rises again. The lifting plate 302 drives the multiple annular push blocks 3 to move back to their corresponding annular grooves through the multiple connecting rods 301, so that the mold closing and injection blowing work can be performed again.

[0053] This embodiment facilitates the automatic extrusion and demolding of multiple bottle caps by utilizing the downward power of the blow molding component after mold opening, eliminating the need for manual demolding by personnel. This saves time and effort and improves the convenience, automation, and efficiency of demolding.

[0054] The usage method of this embodiment is as follows: When using the injection blow molding device for producing plastic caps for glass bottles that facilitates injection, the multi-stage electric telescopic rod 2 drives the box-shaped pusher block 101 to move up and down. When the box-shaped pusher block 101 moves up, it drives multiple insert blocks 102 to move up into the mold closing assembly 100. In addition, the mold closing assembly 100 closes the multiple insert blocks 102 to form a cavity, the injection molding assembly 200 performs vertical injection molding, and the air inlet 104 connects to an external air supply device to sequentially supply air through the box-shaped pusher block 101 and multiple air outlets 103 to multiple cavities to assist in filling the cavity. This principle is existing technology and has been disclosed in the above-mentioned technology CN212385988U. The same principle applies to the implementation steps disclosed therein, and will not be described again.

[0055] When the box-shaped pusher 101 moves upward, causing the insert 102 to move upward, the insert 102 also moves the lifting plate 302 upward as a whole through the corresponding annular pusher 3 and two connecting rods 301. After mold opening, when the multi-stage electric telescopic rod 2 is activated in the reverse direction to drive the box-shaped pusher 101 downward, the box-shaped pusher 101 moves the insert 102 and the formed bottle cap downward. The insert 102 moves the lifting plate 302 downward as a whole through the corresponding annular pusher 3 and two connecting rods 301. When the lifting plate 302 moves downward and is blocked by two limiting blocks 4, it is prevented from moving further downward. At this point, the insert 102, which continues to move downward, separates from the corresponding annular pusher 3 and slides downward on the connecting rod 301. Simultaneously, the box-shaped pusher 101 drives the two T-shaped guide rods 303 to move upward. The plate 302 slides downwards, compressing and storing energy in the two springs 304. As the relative displacement of the insert block 102 and the annular push block 3 separates, the annular push block 3 drives the bottle cap to be squeezed and separated from the insert block 102. The annular push block 3 is used to demold the bottle cap, achieving the effect of automatically squeezing and demolding multiple bottle caps by using the downward power after mold opening. There is no need for personnel to manually pull and demold, saving time and effort, and improving the convenience, automation and efficiency of demolding. The tension force formed by the compression of the spring 304 can elastically drive the lifting plate 302 to reset when the box-shaped push block 101 rises again. The lifting plate 302 drives multiple annular push blocks 3 to move back to their corresponding annular grooves through multiple connecting rods 301, so that the mold closing and injection blowing work can be performed again.

[0056] Example 2

[0057] like Figure 4As shown, this embodiment differs from Embodiment 1 in that the connecting sleeve 401 is adjustablely connected to the outside of the corresponding support rod 202. The connecting sleeve 401 is movably fitted onto the outside of the corresponding support rod 202. The opposing sides of the two support rods 202 are tightly pressed with knob bolts 402. The opposing sides of the two connecting sleeves 401 are provided with threaded holes, which are threadedly connected to the corresponding knob bolts 402.

[0058] This embodiment can flexibly adjust the support height of the limiting block 4 against the lifting plate 302, so as to flexibly adjust the height of the limiting block 4 according to the maximum retraction stroke of the multi-stage electric telescopic rod 2, avoid the phenomenon that the mold cannot be effectively demolded after the mold is opened and descended due to installation deviation, and avoid the phenomenon that the multi-stage electric telescopic rod 2 cannot be adapted to the application due to deviation in the future, thus further improving the flexibility of use.

[0059] The usage method of this embodiment is as follows: Unlike Embodiment 1, it also has the following functions: Utilizing the provided threaded hole and knob bolt 402, the knob bolt 402 is rotated in the opposite direction to rotate within the corresponding threaded hole and separate from the support rod 202, releasing the locking of the connecting sleeve 401. After unlocking, the connecting sleeve 401 is pushed up and down to slide up and down on the outside of the corresponding support rod 202, which can drive the corresponding limiting block 4 to move up and down to adjust the support height of the lifting plate 302. After adjustment, the knob bolt 402 is rotated in the forward direction to press tightly against the outside of the support rod 202, thus locking the connecting sleeve 401. This achieves convenient and flexible adjustment of the support height of the limiting block 4 on the lifting plate 302, allowing for flexible adjustment of the height of the limiting block 4 according to the maximum retraction stroke of the multi-stage electric telescopic rod 2. This avoids the phenomenon of ineffective demolding after mold opening and descent due to installation deviation, and also avoids the phenomenon of incompatibility due to deviation when replacing the multi-stage electric telescopic rod 2 later, further improving the flexibility of use.

[0060] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. An injection-blowing device for producing plastic caps of glass bottles facilitating injection, comprising an injection-blowing device body, the injection-blowing device body comprising a base (1), two supporting rods (202) fixed on the top of the base (1), a mold closing assembly (100) fixed on the top ends of the two supporting rods (202), and an injection molding assembly (200) fixed on the top of the mold closing assembly (100), wherein a blow molding assembly is arranged between the two supporting rods (202). The blow molding assembly includes a box-shaped pusher block (101), an air inlet (104) fixed to the front side of the box-shaped pusher block (101), and a plurality of insert blocks (102) integrally fixed to the top of the box-shaped pusher block (101). The top of the insert block (102) is provided with an air outlet (103) that communicates with the inside of the box-shaped pusher block (101). The top of the base (1) is fixedly installed with a multi-stage electric telescopic rod (2) whose protruding end is fixedly connected to the bottom of the box-shaped push block (101); The box-shaped pusher (101) is equipped with a lever-type self-demolding mechanism, which includes: The lifting plate (302) is located below the box-shaped push block (101); The push-out demolding assembly consists of multiple sets, all of which are fixedly connected to the top of the lifting plate (302), and multiple inserts (102) are movably sleeved on the corresponding push-out demolding assembly; The vertical missile support assembly consists of two sets, both of which are fixedly connected to the bottom of the box-shaped push block (101), and the lifting plate (302) is sleeved on the two vertical missile support assemblies; Limiting blocks (4) are in two sets and both are in active contact with the bottom of the lifting plate (302); The connecting sleeve (401) consists of two sets, which are fixedly connected to the opposite side of the two limiting blocks (4) respectively. The connecting sleeve (401) is connected to the outside of the corresponding support rod (202).

2. The injection blow molding device for producing plastic caps for glass bottles, as described in claim 1, is characterized in that: The connecting sleeve (401) is welded to the outside of the corresponding support rod (202).

3. The injection blow molding device for producing plastic caps for glass bottles, as described in claim 1, is characterized in that: The connecting sleeve (401) can be adjusted and connected to the outside of the corresponding support rod (202).

4. The injection blow molding device for producing plastic caps for glass bottles, as described in claim 2, is characterized in that: The connecting sleeve (401) is movably fitted on the outside of the corresponding support rod (202). The two support rods (202) are pressed against each other on opposite sides by a knob bolt (402). The two connecting sleeves (401) are provided with threaded holes on opposite sides, and the threaded holes are threadedly connected to the corresponding knob bolts (402).

5. The injection blow molding device for producing plastic caps for glass bottles with easy injection as described in claim 1, characterized in that: The push-out demolding assembly includes an annular push block (3) and two connecting rods (301). The top of the insert block (102) is provided with an annular groove. The annular push block (3) is movably fitted in the corresponding annular groove. The bottom of the annular push block (3) is fixedly connected to the top of the corresponding two connecting rods (301). The bottom of the multiple connecting rods (301) is fixedly connected to the top of the lifting plate (302). The insert block (102) is slidably fitted on the corresponding two connecting rods (301). The box-shaped push block (101) is slidably fitted on the multiple connecting rods (301).

6. The injection blow molding device for producing plastic caps for glass bottles, as described in claim 1, is characterized in that: The vertical missile support assembly includes a T-shaped guide rod (303) and a spring (304). Both T-shaped guide rods (303) are fixedly connected to the bottom of the box-shaped push block (101). The lifting plate (302) is slidably sleeved on the two T-shaped guide rods (303). The spring (304) is fixedly connected between the top of the lifting plate (302) and the bottom of the box-shaped push block (101). The two springs (304) are respectively movably sleeved on the corresponding T-shaped guide rods (303).

7. The injection blow molding device for producing plastic caps for glass bottles, as described in claim 1, is characterized in that: Both sides of the box-shaped push block (101) are fixedly connected with vertical guide sleeves (201), and the vertical guide sleeves (201) are slidably sleeved on the corresponding support rods (202).

8. The injection blow molding device for producing plastic caps for glass bottles, as described in claim 1, is characterized in that: The top of the lifting plate (302) is provided with an avoidance through hole (305), and the multi-stage electric telescopic rod (2) is located inside the avoidance through hole (305) and does not contact its inner side.

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