Hollow blow molding machine with rapid demolding structure

Abstract

The utility model relates to the technical field of blow molding machines, in particular to a hollow blow molding machine with a quick demolding structure, which comprises a hollow blow molding machine body, an injection molding mechanism and a blow molding mechanism are sequentially arranged at the upper end of the hollow blow molding machine body, and a moving mechanism is arranged in the hollow blow molding machine body. The fixed mold assembly comprises a fixed mold and a movable mold, the demolding assembly is movably arranged in the containing groove, and the cutting assembly is fixedly arranged at the upper end of the fixed mold assembly. According to the utility model, when the movable mold is moved out, the sealing frame seals the fixed mold and the movable mold, the cutter cuts off a stub bar at the upper end of a product, the sealing frame is matched to seal the periphery of the product, the air pump operates, air is pumped between the product and the fixed mold and the movable mold through the air outlet hole, and the product is separated from the movable mold and the fixed mold through high pressure; and when the cooling temperature of the mold is not uniform, the product can still be quickly demolded, and the blow molding rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of blow molding machine technology, specifically a hollow blow molding machine with a rapid demolding structure. Background Technology

[0002] A blow molding machine is a machine that injects liquid plastic into a mold cavity of a certain shape and uses air force to shape the liquid plastic within the mold cavity. Blow molding machines are widely used for processing various plastics, and the finished products are widely used as industrial packaging containers.

[0003] Existing blow molding machines typically demold the blow-molded product by separating the moving mold and the fixed mold. However, when the mold cooling temperature is uneven, the product may not be completely demolded, leading to product damage and making it difficult to demold the blow-molded product quickly and completely. Utility Model Content

[0004] The purpose of this invention is to provide a hollow blow molding machine with a rapid demolding structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A hollow blow molding machine with a rapid demolding structure includes a hollow blow molding machine body. An injection molding mechanism and a blow molding mechanism are sequentially arranged at the upper end of the hollow blow molding machine body. A moving mechanism is provided inside the hollow blow molding machine body, including:

[0007] A fixed mold assembly is fixedly installed at the moving mechanism. The fixed mold assembly includes a fixed mold and a moving mold. A sealing groove is formed on one side surface of the fixed mold, and a storage groove is formed on one side surface of the moving mold.

[0008] A demolding assembly is movably disposed inside the storage groove. The demolding assembly includes a sealing frame that is slidably connected inside the storage groove, and an air pump is fixedly provided at the upper end of the moving mold.

[0009] The cutting component is fixedly mounted on the upper end of the mold assembly.

[0010] Furthermore, the sealing frame and the sealing groove are movably connected.

[0011] Furthermore, multiple springs are fixedly connected at equal intervals on one side surface inside the storage slot, and one end of each spring is fixedly connected to the sealing frame.

[0012] Furthermore, multiple air vents are symmetrically provided at the upper end of the inner surface of the sealing frame, and the air vents penetrate the sealing frame, with a T-connector fixedly connected between two adjacent air vents.

[0013] Preferably, a connecting hose is fixedly connected between the two three-way connectors, and one end of the connecting hose is fixedly connected to the air pump.

[0014] Furthermore, the cutting assembly includes:

[0015] Two limiting frames are fixedly installed on the upper surfaces of the fixed mold and the moving mold, respectively;

[0016] The cutter is movably inserted into the limiting frame at the upper end of the fixed mold.

[0017] Preferably, a cylinder is fixedly mounted on the upper end of the fixed mold via a bracket, a connecting plate is fixedly connected to the output end of the cylinder, the connecting plate is fixedly connected to the cutter, and the cutter is movably inserted into the limiting frame at the upper end of the moving mold and is movably fitted with the moving mold and the fixed mold.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. By inserting the sealing frame into the sealing groove when the fixed mold and moving mold are closed, the fixed mold and moving mold are sealed together. When the fixed mold and moving mold slightly separate, the sealing frame is ejected and still connected to the sealing groove, creating a certain space between the fixed mold and moving mold and the product. This facilitates air pumping in. When the air pump is running, multiple air outlets release air simultaneously. When the sealing frame is ejected, the air outlets are located between the fixed mold and moving mold, and air is pumped into the space between the fixed mold and moving mold and the product. Thus, when the moving mold is removed, the air pump runs and uses high pressure to separate the product from the moving mold and fixed mold. Even when the mold cooling temperature is uneven, the product can still be demolded quickly, increasing the blow molding success rate.

[0020] 2. After blow molding is completed, the cylinder retracts, driving the cutter to move and insert it into the two limit frames. The cutter cuts off the material head at the top of the product and seals the top of the product with the fixed mold and the moving mold. Together with the sealing frame, the product is sealed, which facilitates the air pump in to create a high-pressure environment, allowing the air to separate the product from the fixed mold and the moving mold. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram showing the disassembled structure of the mold fixing component and the demolding component in this utility model;

[0023] Figure 3 This is a side cross-sectional view of the moving mold and demolding assembly in this utility model;

[0024] Figure 4 This is a schematic diagram of the connection between the moving mold and the sealing frame in this utility model;

[0025] Figure 5This is a schematic diagram of the cross-sectional structure of the connection between the air pump and the sealing frame in this utility model;

[0026] Figure 6 This is a schematic diagram of the side cross-sectional structure of the cutting component in this utility model.

[0027] In the diagram: 1. Hollow blow molding machine body; 101. Injection molding mechanism; 102. Blow molding mechanism; 103. Moving mechanism; 2. Fixed mold assembly; 201. Fixed mold; 202. Moving mold; 203. Sealing groove; 204. Storage groove; 3. Demolding assembly; 301. Sealing frame; 302. Spring; 303. Air vent; 304. T-connector; 305. Connecting hose; 306. Air pump; 4. Cutting assembly; 401. Limiting frame; 402. Cutting blade; 403. Cylinder. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-6 In this embodiment of the present invention, a hollow blow molding machine with a rapid demolding structure includes a hollow blow molding machine body 1. An injection molding mechanism 101 and a blow molding mechanism 102 are sequentially arranged on the upper end of the hollow blow molding machine body 1. The injection molding mechanism 101 is used to inject raw material into a fixed mold 201. The blow molding head of the blow molding mechanism 102 is inserted into the raw material for blow molding. A moving mechanism 103 is arranged inside the hollow blow molding machine body 1. The moving mechanism 103 is used to drive the fixed mold 201 and the moving mold 202 to move. The fixed mold assembly 2 is fixed. The fixed mold assembly 2 is fixedly located at the moving mechanism 103. The fixed mold assembly 2 includes a fixed mold 201 and a moving mold 202. A sealing groove 203 is opened on one side surface of the fixed mold 201, and a storage groove 204 is opened on one side surface of the moving mold 202. The demolding assembly 3 is movably located inside the storage groove 204. The demolding assembly 3 includes a sealing frame 301 that is slidably connected inside the storage groove 204. An air pump 306 is fixedly installed at the upper end of the moving mold 202. The air pump 306 pumps outside air into the outside of the product. The cutting assembly 4 is fixedly installed at the upper end of the fixed mold assembly 2.

[0030] Specifically, the demolding component 3 is used to separate the product from the fixed mold 201 and the moving mold 202, and the cutting component 4 cuts off the material head at the top of the product, so that the appearance of the product is adjusted during demolding.

[0031] Example 1

[0032] like Figure 2-4As shown, in this embodiment, the sealing frame 301 is movably inserted into the sealing groove 203; multiple springs 302 are fixedly connected at equal intervals on one side surface of the inner side of the storage groove 204, and one end of the spring 302 is fixedly connected to the sealing frame 301.

[0033] In this embodiment, the spring 302 pushes the sealing frame 301 with its own elastic force, causing the sealing frame 301 to move outward. When the fixed mold 201 and the moving mold 202 are closed, the sealing frame 301 is inserted into the sealing groove 203, and at the same time, the sealing frame 301 is pushed into the receiving groove 204, sealing the fixed mold 201 and the moving mold 202. When the fixed mold 201 and the moving mold 202 are slightly separated, the sealing frame 301 is pushed out and is still connected and sealed with the sealing groove 203, so that a certain space is created between the fixed mold 201 and the moving mold 202 and the product, which facilitates the air pumping in.

[0034] like Figure 2 and Figure 5 As shown, in this embodiment, a plurality of air vents 303 are symmetrically provided at the upper end of the inner surface of the sealing frame 301, and the air vents 303 penetrate the sealing frame 301. A three-way connector 304 is fixedly connected between two adjacent air vents 303, and the three-way connector 304 connects the two air vents 303. A connecting hose 305 is fixedly connected between two three-way connectors 304, and one end of the connecting hose 305 is fixedly connected to the air pump 306.

[0035] In practice, when the fixed mold 201 and the moving mold 202 slightly separate, the air pump 306 operates, and through the connection of the connecting hose 305, multiple air outlets 303 simultaneously release air. When the sealing frame 301 is ejected, the air outlets 303 are positioned between the fixed mold 201 and the moving mold 202, and air is pumped into the space between the fixed mold 201, the moving mold 202, and the product. Thus, when the moving mold 202 is removed, the sealing frame 301 seals the space between the fixed mold 201 and the moving mold 202, and the air pump 306 operates, using high pressure to separate the product from the moving mold 202 and the fixed mold 201. Even when the mold cooling temperature is uneven, the product can still be demolded quickly, increasing the blow molding rate.

[0036] Example 2

[0037] Based on Example 1, in order to address the problem that the product head is not easy to remove quickly.

[0038] like Figure 4 and Figure 6As shown, in this embodiment, the cutting assembly 4 includes: two limiting frames 401 fixedly installed on the upper surfaces of the fixed mold 201 and the moving mold 202 respectively; the cutter 402 is movably inserted into the limiting frame 401 at the upper end of the fixed mold 201; a cylinder 403 is fixedly installed on the upper end of the fixed mold 201 via a bracket (the cylinder 403 is connected to the hydraulic system of the hollow blow molding machine body 1 and is controlled by the hydraulic system of the hollow blow molding machine body 1); a connecting plate is fixedly connected to the output end of the cylinder 403; the connecting plate is fixedly connected to the cutter 402; the cutter 402 is movably inserted into the limiting frame 401 at the upper end of the moving mold 202 and is movably fitted with the moving mold 202 and the fixed mold 201.

[0039] In practice, after blow molding is completed, cylinder 403 retracts, driving cutter 402 to move and insert into the two limiting frames 401. Cutter 402 cuts off the material head at the top of the product. At the same time, cutter 402 seals the top of the product with the fixed mold 201 and the moving mold 202. Thus, the material head at the top of the product is cut off by cutter 402. At the same time, the sealing frame 301 seals the area around the product, which facilitates the introduction of air to create a high-pressure environment, so that the air separates the product from the fixed mold 201 and the moving mold 202.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hollow blow molding machine with a rapid demolding structure, comprising a hollow blow molding machine body (1), wherein an injection molding mechanism (101) and a blow molding mechanism (102) are sequentially arranged at the upper end of the hollow blow molding machine body (1), and a moving mechanism (103) is provided inside the hollow blow molding machine body (1), characterized in that, include: A fixed mold assembly (2) is fixedly installed at the moving mechanism (103). The fixed mold assembly (2) includes a fixed mold (201) and a moving mold (202). A sealing groove (203) is provided on one side surface of the fixed mold (201), and a storage groove (204) is provided on one side surface of the moving mold (202). The demolding assembly (3) is movably disposed inside the storage groove (204). The demolding assembly (3) includes a sealing frame (301) slidably connected inside the storage groove (204). An air pump (306) is fixedly provided at the upper end of the moving mold (202). The cutting component (4) is fixedly installed on the upper end of the mold assembly (2).

2. The hollow blow molding machine with a rapid demolding structure according to claim 1, characterized in that, The sealing frame (301) is movably inserted into the sealing groove (203).

3. The hollow blow molding machine with a rapid demolding structure according to claim 1, characterized in that, Multiple springs (302) are fixedly connected at equal intervals on one side surface inside the storage slot (204), and one end of each spring (302) is fixedly connected to the sealing frame (301).

4. The hollow blow molding machine with a rapid demolding structure according to claim 1, characterized in that, Multiple air vents (303) are symmetrically opened at the upper end of the inner surface of the sealing frame (301), and the air vents (303) penetrate the sealing frame (301). A three-way connector (304) is fixedly connected between two adjacent air vents (303).

5. The hollow blow molding machine with a rapid demolding structure according to claim 4, characterized in that, A connecting hose (305) is fixedly connected between the two three-way connectors (304), and one end of the connecting hose (305) is fixedly connected to the air pump (306).

6. The hollow blow molding machine with a rapid demolding structure according to claim 1, characterized in that, The cutting component (4) includes: Two limiting frames (401) are fixedly installed on the upper surfaces of the fixed mold (201) and the moving mold (202), respectively; The cutter (402) is movably inserted into the limiting frame (401) at the upper end of the fixed mold (201).

7. The hollow blow molding machine with a rapid demolding structure according to claim 6, characterized in that, A cylinder (403) is fixedly installed on the upper end of the fixed mold (201) by a bracket. A connecting plate is fixedly connected to the output end of the cylinder (403). The connecting plate is fixedly connected to the cutter (402). The cutter (402) is movably inserted into the limiting frame (401) at the upper end of the moving mold (202) and is movably fitted with the moving mold (202) and the fixed mold (201).

Images