Plastic cup blow molding machine

Abstract

The utility model relates to the technical field of plastic cup processing, and discloses a plastic cup blow molding machine which comprises a blow molding table, a blow molding machine main body is fixedly mounted on the blow molding table, the output end of the blow molding machine main body is fixedly connected with a blow molding opening, and a blow molding mold is mounted on the blow molding table; the adjusting assembly is arranged in the blow molding opening, the adjusting assembly is used for adjusting the pressure intensity generated during blow molding of the plastic cup, the adjusting assembly comprises a sealing ring, a pressure relief block and a sealing block, the sealing ring is fixedly connected with the inner wall of the blow molding opening, and in the blow molding process, parts in the adjusting assembly are matched with one another, the sealing block is ejected open, and the pressure relief block is pressed against the sealing block; after blow molding is completed, the pressure relief block is ejected open through the pressure difference between the mold and the outside, the gas slowly enters a part, the internal and external pressure difference of the plastic cup is maintained, and the situation that the plastic cup deforms due to the sudden internal and external pressure difference, and the production quality of the plastic cup is affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of plastic cup processing, specifically relates to a plastic cup blow molding machine. BACKGROUND

[0002] Blow molding is also called hollow blow molding, a kind of rapidly developing plastic processing method.Tubular plastic parison of thermoplastic resin is placed in split mold and inflated by compressed air immediately after the mold is closed, so that the plastic parison is tightly attached to the inner wall of the mold, and various hollow products are obtained after cooling and demolding.

[0003] Through the retrieval of the file with disclosure number (CN219505414U) discloses a kind of plastic cup semi-finished product blow molding device, including base, upper die and conveying device, the upper die top is equipped with telescopic equipment, the base top is symmetrically fixedly connected with vertical plate, each vertical plate side wall is fixedly installed with electric push rod, the movable end of each electric push rod is fixedly connected with lower die, the inner wall of base is provided with through hole, the base bottom is equipped with cooling mechanism that the plastic plate is cooled after blow molding is completed;The cooling mechanism includes motor fixedly connected in the bottom of base by folding rod, the output end of motor is fixedly connected with cam, the bottom of base is fixedly connected with conveying pipe, the conveying pipe inner wall is fixedly connected with a plurality of cold air pipes.

[0004] The above device is provided with upper die, lower die and base and other structures, after the abutment of two lower dies, the upper die can blow plastic parison, and the blow molding is completed in the cavity formed by the abutment of two lower dies.

[0005] In the actual blow molding of plastic cup, the air compressor quickly cuts off the air pressure supply to the plastic cup after blow molding, the temperature of the plastic cup is extremely high during blow molding, and the plastic cup has good plasticizing capacity, but the rapid air cut-off of the air compressor causes the pressure difference between the inside and outside of the plastic cup, the rapid air exhaust makes the unformed bottle lose support, and the plastic cup is extruded by the pressure difference, which affects the quality of the plastic cup

[0006] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0007] To solve the pressure difference before and after plastic cup injection molding technical problem, the basic idea of the technical scheme of the utility model is:

[0008] The utility model provides a kind of plastic cup blow molding machine, including blow molding platform, blow molding platform is fixedly installed with blow molding machine main body, the output of blow molding machine main body is fixedly connected with blow molding mouth, and blow molding platform is installed with blow molding mould;Adjusting assembly, adjusting assembly is arranged in blow molding mouth, adjusting assembly is used to adjust the pressure intensity generated when plastic cup blow molding, adjusting assembly includes sealing ring, pressure relief block and sealing block, sealing ring is fixedly connected with the inner wall of blow molding mouth, pressure relief block is elastically connected with blow molding mouth, sealing block is elastically connected with blow molding mouth, sealing block is respectively with sealing ring and pressure relief block abuts.

[0009] As a preferred embodiment of the utility model, the inner wall of the blow molding mouth is fixedly connected with a mounting block, the mounting block is fixedly connected with a support rod, the sealing block is elastically connected with the support rod, and the pressure relief block is elastically connected with the support rod.

[0010] As a preferred embodiment of the utility model, a second spring is sleeved on the support rod, one end of the second spring is fixedly connected with the mounting block, the other end of the second spring is fixedly connected with the sealing block, and the sealing block is slidingly connected with the support rod.

[0011] As a preferred embodiment of the utility model, the sealing block is composed of a ring-shaped block and a conical block, and the conical block is fixedly connected with the ring-shaped block through a support.

[0012] As a preferred embodiment of the utility model, the end of the support rod is fixedly connected with a mounting bracket, the mounting bracket is fixedly connected with the inner wall of the blow molding mouth, and the pressure relief block is elastically connected with the mounting bracket.

[0013] As a preferred embodiment of the utility model, a plurality of sliding rods are slidingly connected with the mounting bracket, and the end of each sliding rod is fixedly connected with the corresponding position of the pressure relief block.

[0014] As a preferred embodiment of the utility model, a first spring is sleeved on each sliding rod, and the end of each first spring is fixedly connected with the corresponding pressure relief block and mounting bracket.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The plastic cup blow molding machine adjusts the components in the adjusting assembly to cooperate with each other during blow molding, the sealing block is pushed open, the gas is blown through the blow molding mouth, and after blow molding is completed, the pressure difference between the mold and the outside world pushes the pressure relief block open, the gas slowly enters a part, maintains the internal and external pressure difference of the plastic cup, avoids the sudden internal and external pressure difference gap to cause the plastic cup to produce deformation, and affects the quality of the plastic cup product.

[0017] 2. The plastic cup blowing machine, through the continuous accumulation of gas in the blowing port, the pressure generated by the force will open the sealing block, the sealing block is separated from the sealing ring and the pressure relief block, and the compressed gas is quickly introduced into the mold, at this time the gas has not been completely decompressed, through the pressure of the gas to quickly complete the injection molding of the plastic cup, reduce the subsequent gas input, at the same time, accelerate the blowing efficiency, improve the plastic cup blowing production efficiency.

[0018] 3. The plastic cup blowing machine, after the mold and the plastic cup are sufficient, the pressure between the blowing port and the mold is flat, the sealing block is compressed when moving, the second spring is deformed after being compressed, and the deformed force is applied to the sealing block, the sealing block is back and in close contact with the sealing ring and the pressure relief block, and the gas injected into the mold and the plastic cup is continuously shaped, thereby enhancing the shaping effect.

[0019] 4. The plastic cup blowing machine, the first spring is compressed when the pressure relief block moves, the first spring is deformed and the deformed force is applied to the pressure relief block after the blowing port and the mold are separated, the pressure relief block is pushed and in close contact with the sealing block again, thereby realizing automatic pressure relief and automatic reset for continuous operation.

[0020] The specific embodiments of the utility model will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] In the drawings:

[0022] Figure 1 is a three-dimensional schematic view of the utility model;

[0023] Figure 2 is a three-dimensional schematic view of the blowing port of the utility model;

[0024] Figure 3 is a structural schematic view of the blowing port of the utility model;

[0025] Figure 4 is a structural schematic view between the mounting frame and the pressure relief block of the utility model;

[0026] Figure 5 is a structural schematic view of the utility model on the strut.

[0027] In the drawings: 1, blowing table; 11, blowing machine main body; 2, blowing port; 21, sealing ring; 3, pressure relief block; 31, mounting frame; 32, sliding rod; 33, first spring; 4, sealing block; 41, mounting block; 42, strut; 43, second spring. DETAILED DESCRIPTION

[0028] For the purpose, technical scheme and advantages of the embodiments of the utility model, the following will be combined with the drawings in the embodiments of the utility model, the technical scheme in the embodiments is clearly and completely described, the following embodiments are used to explain the utility model.

[0029] Please refer to Figures 1-5 A plastic cup blow molding machine, including blow molding platform 1, blow molding platform 1 is fixedly installed with blow molding machine main body 11, the output of blow molding machine main body 11 is fixedly connected with blow molding mouth 2, blow molding platform 1 is installed with blow molding die;Adjusting assembly, adjusting assembly is arranged in blow molding mouth 2, adjusting assembly is used for adjusting the pressure intensity generated when plastic cup blow molding, adjusting assembly includes sealing ring 21, pressure relief block 3 and sealing block 4, sealing ring 21 is fixedly connected with the inner wall of blow molding mouth 2, pressure relief block 3 is elastically connected with blow molding mouth 2, sealing block 4 is elastically connected with blow molding mouth 2, sealing block 4 is respectively abutted with sealing ring 21 and pressure relief block 3, the plastic cup embryo is placed in blow molding die, blow molding mouth 2 is lifted to the appropriate position by blow molding machine main body 11 to the plastic cup embryo blow molding, in blow molding, the components in adjusting assembly cooperate with each other, sealing block 4 is pushed open, gas is blown through blow molding mouth 2, after blow molding is completed, pressure relief block 3 is pushed open by the pressure difference between the die and the outside, a part of gas slowly enters, maintains the internal and external pressure difference of plastic cup, avoids the internal and external pressure difference gap of plastic cup and causes the deformation of plastic cup, influences the quality of plastic cup.

[0030] Among them, the inner wall of blow molding mouth 2 is fixedly connected with mounting block 41, mounting block 41 is fixedly connected with support rod 42, sealing block 4 is elastically connected with support rod 42, pressure relief block 3 is elastically connected with support rod 42, second spring 43 is sleeved on support rod 42, one end of second spring 43 is fixedly connected with mounting block 41, the other end of second spring 43 is fixedly connected with sealing block 4, sealing block 4 is slidingly connected with support rod 42, sealing block 4 is composed of annular block and conical block, and the conical block and the annular block are fixedly connected through the support, when blow molding mouth 2 contacts the die, blow molding machine main body 11 sends gas into blow molding mouth 2, the pressure generated by the continuous accumulation of gas in blow molding mouth 2, the force generated by the pressure pushes open sealing block 4, sealing block 4 is separated from sealing ring 21 and pressure relief block 3, and is compressed to a certain amount of gas to quickly enter the die, at this time, the gas has not been completely decompressed, and the injection molding of the plastic cup is quickly completed through the pressure of the gas, the subsequent gas input is reduced, the blow molding efficiency is accelerated, the plastic cup blow molding production efficiency is improved, the pressure between blow molding mouth 2 and the die is flat after the pressure in the die and the plastic cup is enough, sealing block 4 is compressed when moving second spring 43, second spring 43 is deformed after being compressed, and the deformed force is applied to sealing block 4, sealing block 4 is pushed back and tightly contacts sealing ring 21 and pressure relief block 3, and the gas injected in the die and the plastic cup is continuously shaped, thereby enhancing the shaping effect.

[0031] The end of the support rod 42 is fixedly connected with the mounting rack 31, the mounting rack 31 is fixedly connected with the inner wall of the blow molding port 2, the pressure relief block 3 is elastically connected with the mounting rack 31, a plurality of slide rods 32 are slidably connected on the mounting rack 31, the end of each slide rod 32 is fixedly connected with the corresponding position of the pressure relief block 3, a first spring 33 is sleeved on each slide rod 32, and the end of each first spring 33 is fixedly connected with the corresponding pressure relief block 3 and the mounting rack 31 respectively. When the blow molding is completed and the blow molding port 2 is not directly separated from the mold, the mold and the gas remaining in the plastic cup do not have a pressure relief path to the outside world, the blow molding machine body 11 stops working, the gas in the mold and the plastic cup pushes the pressure relief block 3, the pressure relief block 3 moves and is separated from the sealing block 4, the residual gas in the blow molding port 2 is quickly mixed with the compressed gas in the mold, the gas pressure in the mold is slowly released, the blow molding port 2 is separated from the mold after the slow release, the pressure difference between the gas in the mold and the outside world is not large, sudden separation is avoided, the pressure difference between the gas in the mold and the outside world is large, the plastic cup is deformed due to the influence of the pressure difference, the quality of the plastic cup is affected, the first spring 33 is compressed when the pressure relief block 3 moves, the first spring 33 is deformed and applies the deformed force to the pressure relief block 3 after the blow molding port 2 is separated from the mold, the pressure relief block 3 is pushed and tightly contacts the sealing block 4 again, automatic pressure relief and automatic reset are realized, and continuous operation is performed.

[0032] It is worth noting that the blow molding machine body 11, the mold and other necessary devices for blow molding of the plastic cup are fully disclosed in the art, and are not improved by the present optimization scheme, so they are not disclosed in detail in the text and will not be described here.

[0033] Working principle: the plastic cup embryo is placed in the blow molding mold, the blow molding machine body 11 lifts the blow molding port 2 to the appropriate position to blow the plastic cup embryo, and the sealing block 4 is opened by adjusting the cooperation between the components in the assembly. The gas is blown through the blow molding port 2, and after the blow molding is completed, the pressure difference between the mold and the outside world will open the pressure relief block 3, and the gas will slowly enter a part to maintain the pressure difference between the inside and outside of the plastic cup, avoid the sudden inside and outside pressure difference gap to cause the plastic cup to produce deformation, and affect the quality of the plastic cup. When the blow molding port 2 contacts the mold, the blow molding machine body 11 sends the gas into the blow molding port 2, and the pressure generated by the continuous accumulation of the gas in the blow molding port 2 will open the sealing block 4, and the sealing block 4 will be separated from the sealing ring 21 and the pressure relief block 3. The compressed gas quickly enters the mold, and at this time the gas has not been completely decompressed, and the pressure of the gas quickly completes the injection molding of the plastic cup, reduces the subsequent gas input, and speeds up the blow molding efficiency. The mold and the plastic cup have enough pressure, and the pressure between the blow molding port 2 and the mold is flat. When the sealing block 4 moves, the second spring 43 is compressed, and the second spring 43 is deformed after being compressed and applies a deformed force to the sealing block 4. The sealing block 4 is returned and tightly contacts the sealing ring 21 and the pressure relief block 3. The mold and the plastic cup are continuously shaped by the gas injected into the mold, and the shaping effect is enhanced. When the blow molding is completed, the blow molding port 2 and the mold are not directly separated, the gas in the mold and the plastic cup has no pressure relief path with the outside world, the blow molding machine body 11 stops working, the gas in the mold and the plastic cup returns to the pressure relief block 3, the pressure relief block 3 moves and separates from the sealing block 4, the residual gas in the blow molding port 2 quickly mixes with the compressed gas in the mold, and the pressure of the gas in the mold is slowly released. After the slow release, the blow molding port 2 and the mold are separated, and the pressure difference between the gas in the mold and the outside world is not large, avoiding the sudden separation of the mold and the plastic cup. The pressure difference between the gas in the mold and the outside world is large, the plastic cup is affected by the pressure difference and deformed, and the quality of the plastic cup is affected. When the pressure relief block 3 moves, the first spring 33 is compressed, and the first spring 33 is deformed and applies a deformed force to the pressure relief block 3 after the blow molding port 2 and the mold are separated. The pressure relief block 3 is pushed and tightly contacts the sealing block 4 again, realizes automatic pressure relief, and automatically resets for continuous operation.

[0034] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A plastic cup blow molding machine characterized by, Include: Blow molding platform (1), blow molding platform (1) is fixedly installed with blow molding machine body (11), the output end of blow molding machine body (11) is fixedly connected with blow molding mouth (2), blow molding platform (1) is installed with blow molding die; Adjusting assembly, adjusting assembly is arranged in blow molding mouth (2), adjusting assembly is used for adjusting the pressure intensity generated when plastic cup blow molding, adjusting assembly includes sealing ring (21), pressure relief block (3) and sealing block (4), sealing ring (21) is fixedly connected with the inner wall of blow molding mouth (2), pressure relief block (3) is elastically connected with blow molding mouth (2), sealing block (4) is elastically connected with blow molding mouth (2), sealing block (4) is respectively abutted with sealing ring (21) and pressure relief block (3).

2. A plastic cup blowing machine according to claim 1, characterized in that The inner wall of the blow molding mouth (2) is fixedly connected with the mounting block (41), the mounting block (41) is fixedly connected with the support rod (42), the sealing block (4) is elastically connected with the support rod (42), and the pressure relief block (3) is elastically connected with the support rod (42).

3. A plastic cup blowing machine according to claim 2, characterized in that, The second spring (43) is sleeved on the support rod (42), one end of the second spring (43) is fixedly connected with the mounting block (41), the other end of the second spring (43) is fixedly connected with the sealing block (4), and the sealing block (4) is slidably connected with the support rod (42).

4. The plastic cup blow molder of claim 1 wherein, The sealing block (4) is composed of an annular block and a conical block, and the conical block and the annular block are fixedly connected through a support.

5. The plastic cup blow molding machine according to claim 2, characterized in that, The end of the support rod (42) is fixedly connected with the mounting bracket (31), the mounting bracket (31) is fixedly connected with the inner wall of the blow molding mouth (2), and the pressure relief block (3) is elastically connected with the mounting bracket (31).

6. A plastic cup blowing machine according to claim 5, characterized in that A plurality of slide rods (32) are slidably connected on the mounting bracket (31), and the end of each slide rod (32) is fixedly connected with the corresponding position of the pressure relief block (3).

7. A plastic cup blowing machine according to claim 6, characterized in that A first spring (33) is sleeved on each slide rod (32), and the end of each first spring (33) is fixedly connected with the corresponding pressure relief block (3) and mounting bracket (31).

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