Bottle preform production device

Abstract

The bottle preform production device comprises a fixed shell and a material injection assembly, a sliding rod, a cooling circulation system, an extrusion template, an injection molding cavity seat and a hydraulic assembly are arranged in the fixed shell, the extrusion template and the injection molding cavity seat slide on the sliding rod, a transmission belt is arranged at the bottom of the fixed shell, and a mounting block is arranged on the surface of the extrusion template; a male die is arranged on the surface of the mounting block, a demolding assembly is arranged on the surface of the male die, and the movable plate is used for cooperating with the demolding assembly to enable bottle blanks to fall off. Through cooperation of the demolding assembly and the movable plate, after the distance between the movable plate and the extrusion mold plate is shortened, the push ring can push the bottle preform from the male mold to the conveying belt at the bottom, then the next work can be carried out again, the arranged demolding assembly is of a pure mechanical structure, and demolding can be completed without cooperation with other electrical equipment.

Description

Technical Field

[0001] The invention relates to the field of bottle preform production, and in particular to a bottle preform production device. Background Art

[0002] The preform is formed by filling the raw materials into the gun mold of the mold under specific temperature and pressure through injection molding, and is formed under the working conditions of the injection molding machine. It is a semi-finished intermediate product through injection molding, and then becomes a terminal product through blow molding. In the injection molding process, an injection molding machine is usually used to complete the operation; the injection molding machine is the main molding equipment for making thermoplastic plastics or thermosetting plastics into plastic products of various shapes using plastic molding molds, applying high pressure to the molten plastic to make it ejected and fill the mold cavity. For example, the prior art with patent number CN111531798A discloses similar equipment.

[0003] However, after the injection molding is completed, the existing injection molding machine equipment usually needs to be used in conjunction with other demoulding equipment, such as a six-axis robotic arm, to move the preform from the mold to the next process. Not only is the equipment used more frequently, but the demoulding cannot be quickly removed. The combination of multiple complex electrical equipment will also increase the wear and failure rate between the equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a bottle embryo production device to solve the technical problem that the bottle embryo cannot be quickly removed from the mold in the prior art.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a bottle embryo production device, comprising a fixed shell and an injection component. The fixed shell comprises a sliding rod, a cooling circulation system, an extrusion template, an injection cavity seat and a hydraulic component. The extrusion template and the injection cavity seat slide on the sliding rod. A transmission belt is arranged at the bottom of the fixed shell for transmitting the bottle embryo. A moving plate is arranged at the rear end of the extrusion template. A mounting block is arranged on the surface of the extrusion template. A convex mold is arranged on the surface of the mounting block. A demoulding component is arranged on the surface of the convex mold. The moving plate is used to cooperate with the demoulding component to make the bottle embryo fall off.

[0007] Preferably, a mounting hole is provided on the surface of the mounting block, the movable plate includes a partition, a through hole is provided on the surface of the partition, the demolding assembly includes a push ring, a connecting rod, a slip ring, a telescopic spring and a stopper, the push ring is provided at the junction of the punch and the extrusion template facing the injection cavity seat, the connecting rod passes through the mounting hole, the slip ring and the through hole, the connecting rod and the movable plate are connected by the stopper, the two slip rings are respectively installed on the same axis between the extrusion template and the movable plate, and the slip rings are connected by a telescopic spring, and the connecting rod and the push ring are connected.

[0008] Preferably, the number of the connecting rods is at least two, and the connecting rods are symmetrically arranged.

[0009] Preferably, the hydraulic assembly comprises a telescopic rod, which passes through the partition and is connected to the extrusion template.

[0010] Preferably, a limit ring is provided on the sliding rod, and the limit ring is used to limit the movement of the movable plate.

[0011] Preferably, a cooling groove is provided inside the punch, the cooling groove extends to the rear end of the punch, and the cooling groove is connected to a cooling circulation system.

[0012] Preferably, the cooling circulation system comprises a cooling circulation pipe, and the cooling circulation pipe is installed at the rear end of the moving plate.

[0013] Preferably, the cooling groove is arranged in a cross-shaped structure, with the lower end being the liquid inlet and the upper end being the liquid outlet.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention cooperates with the demoulding assembly and the movable plate to shorten the distance between the movable plate and the extrusion template. The demoulding assembly can push the preform from the punch to the conveyor belt at the bottom, and then the next work can be carried out again. The demoulding assembly is a purely mechanical structure, and the demoulding operation can be completed without the cooperation of other electrical equipment, so that the preform can fall off the mold quickly. In addition, the pure mechanical structure has a lower failure rate and will not generate clamping force on the mold to cause wear.

[0016] 2. According to the above structure, the present invention further improves the installation position of the cooling circulation system and improves the shape of the cooling groove on the inner side of the punch. The improved cooling circulation system pipeline distance is greatly shortened, and the circulation speed of the coolant inside the cooling groove is increased, thereby improving the efficiency of bottle embryo molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 is a schematic diagram of the overall structure of Example 1;

[0019] Figure 2 It is a schematic diagram of the extrusion template structure of Example 1;

[0020] Figure 3 is a structural exploded view of the demoulding assembly of Example 1;

[0021] Figure 4is a cross-sectional view of the cooling tank structure of Example 1;

[0022] Figure 5 is a cross-sectional view of the cooling tank structure of Example 2;

[0023] In the figure: 1. fixed shell; 101. injection assembly; 102. hydraulic assembly; 103. cooling circulation pipe; 2. sliding rod; 201. limiting ring; 3. extrusion template; 301. mounting block; 302. punch; 303. cooling groove; 4. injection cavity seat; 5. transmission belt; 6. moving plate; 601. partition; 602. through hole; 7. push ring; 701. connecting rod; 702. telescopic spring; 703. slip ring; 704. stopper; 8. liquid inlet; 801. liquid outlet. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] like Figure 1-5 As shown, the first embodiment of the present invention provides a bottle embryo production device, including a fixed shell 1 and an injection assembly 101. The fixed shell 1 includes a sliding rod 2, a cooling circulation system 103, an extrusion template 3, an injection cavity seat 4 and a hydraulic assembly 102. The extrusion template 3 and the injection cavity seat 4 slide on the sliding rod 2. Under normal conditions, the hydraulic assembly 102 stretches the extrusion template 3 to one side of the injection cavity seat 4. The injection assembly 101 injects the raw material into the extrusion space of the extrusion template 3 and the injection cavity seat 4, and after being shaped by the cooling circulation system 103 of the extrusion template 3, the formed bottle embryo will be attached to the extrusion template 3, and then it can be removed by other processes, such as a six-axis robot arm, etc. In order to simplify the process flow, the present invention is provided with a transmission belt 5 at the bottom of the fixed shell 1 for transmitting the preform, a movable plate 6 is provided at the rear end of the extrusion template 3, a mounting block 301 is provided on the surface of the extrusion template 3, a punch 302 is provided on the surface of the mounting block 301, a demoulding assembly is provided on the surface of the punch 302, and the movable plate 6 is used to cooperate with the demoulding assembly to make the preform fall off, so that the equipment only needs to complete the extrusion molding of the preform, the falling of the preform and transport it to the outside through a single hydraulic assembly 102; that is, after the preform is cooled, the demoulding assembly can cooperate with the movable plate 6 to quickly drop the preform onto the transmission belt 5, thereby increasing the working efficiency of the equipment and reducing the time required for the next preform production.

[0026] The surface of the mounting block 301 is provided with a mounting hole 304, the movable plate 6 includes a partition 601, and the surface of the partition 601 is provided with a through hole 602. The demoulding component includes a push ring 7, a connecting rod 701, a slip ring 703, a telescopic spring 702 and a stopper 704. The push ring 7 is arranged at the junction of the punch 302 and the extrusion template 3 facing the injection cavity seat 4. The connecting rod 701 passes through the mounting hole 304, the slip ring 703 and the through hole 602. The connecting rod (701) and the movable plate 6 are connected by the stopper 704. The two slip rings 703 are respectively installed on the same axis between the extrusion template 3 and the movable plate 6, and the slip rings 703 are connected by the telescopic spring 702. The connecting rod 701 and the push ring 7 are connected; when the hydraulic component 102 is continuously contracted, the mounting block 301 will move toward the movable plate 6, such as Figure 3-4 As shown, the push slip ring 703 squeezes the telescopic spring 702 and moves on the connecting rod 701. At this time, the positions of the push ring 7 and the connecting rod 701 remain unchanged, so the push ring 7 will push the bottle embryo onto the transmission belt 5 on the surface of the punch 302, that is, a demoulding operation is completed, and then the extrusion template 3 is reset again for recycling; the connecting rod 701 and the slip ring 703 of the demoulding component are axially pushed on the surface of the punch 302, and no clamping force will be generated on the punch 302, so the punch 302 will not be deformed, and the punch 302 itself also needs to move from the injection cavity seat 4 to the outside, so the bottle embryo will be pushed off the punch 302 during the movement, so that the demoulding process is also in line with the actual bottle embryo manufacturing process.

[0027] The number of the connecting rods 701 is at least two, and the connecting rods 701 are symmetrically arranged, so that the push ring 7 can push the preform off the punch 302 under the condition of uniform force.

[0028] The hydraulic assembly 102 includes a telescopic rod, which passes through the partition 601 and is connected to the extrusion template 3. In order to make the pressure between the extrusion template 3 and the injection cavity seat 4 large enough, the hydraulic assembly 102 and the extrusion template 3 are directly connected. When a pushing effect is generated, the extrusion template 3 is transmitted to the movable plate 6 through the connecting rod 701 and the stopper 704. When a contraction effect is generated, since a telescopic spring 702 is arranged between the extrusion template 3 and the movable plate 6, the telescopic spring 702 will continue to push the movable plate 6 to retreat on the sliding rod 2.

[0029] A limit ring 201 is provided on the sliding rod 2, and the limit ring 201 is used to limit the movement of the movable plate 6, so that the movable plate 6 stops moving when it shrinks to the limit ring 201, and the extrusion template 3 still moves toward the movable plate 6, and the telescopic spring 702 with greater elasticity can shrink backward a certain distance according to the supporting force of the limit ring 201.

[0030] The inside of the male mold 302 is provided with a cooling groove 303, the cooling groove 303 extends to the rear end of the male mold 302, and the cooling groove 303 is connected to the cooling circulation system 103, such as Figure 4 As shown, the punch 302 can extend horizontally or through the inside of the movable plate 6, and extend a pipe from the upper part of the movable plate 6 to the cooling circulation system 103, so that the pipe of the cooling circulation system 103 can move together with the extrusion template 3 in a fixed environment, and the movable plate 6 itself can also be equipped with a cooling circulation pipe 103 of the cooling circulation system 103 to reduce the pipe length required for the cooling circulation system 103.

[0031] Specifically, the fixed housing 1 is located at one end of the injection assembly 101 to form a semi-sealed operation, such as Figure 1 As shown, during operation, the hydraulic assembly 102 pushes the extrusion template 3 and the movable plate 6 to the right, allowing the punch 302 to enter the injection cavity seat 4, and the push ring 7 provided further seals and blocks between the injection cavity seat 4 and the punch 302, and the injection assembly 101 injects the raw material into the injection cavity seat 4, and then the cooling circulation system 103 allows the raw material to be cooled on the punch 302 to form a bottle embryo, and the hydraulic assembly 102 shrinks the extrusion template 3 and the movable plate 6 again until the movable plate 6 moves to the limit ring 201 and does not move, and the extrusion template 3 continues to move, so that the mounting block 301 on the connecting rod 701 shrinks backward again based on the slip ring 703, until the push ring 7 pushes the bottle embryo on the surface of the punch 302 onto the transmission belt 5, and the transmission belt 5 finally moves the bottle embryo to the outside for centralized processing;

[0032] The automation level of the present invention is further improved. Only a single hydraulic assembly 102 is used to complete the injection and demolding operations of the preform. The installed movable plate 6 can also shorten the distance between the cooling circulation system 103 and the extrusion template 3, reducing the time the pipeline is exposed to the environment. Not only can the production time of the preform be shortened, but the axial demolding structure will not cause a large deformation of the punch 302. The pure mechanical structure does not require the participation of electrical equipment. While saving energy, the pure mechanical structure has stronger stability.

[0033] In another embodiment, Figure 5 As shown, the cooling groove 303 is a cross-shaped structure, and the lower end is the liquid inlet 8, and the upper end is the liquid outlet 801. This design allows the cooling circulation system 103 to flow mainly to the upper part when cooling enters, so that the coolant with a larger initial flow rate is located on the upper side. The coolant at the bottom will continue to fall because of the upward flow of heat, pushing the hotter liquid at the bottom to flow out from the upper liquid outlet 801, so that the coolant flow rate inside the cooling groove 303 is faster, the cooling and molding efficiency of the bottle embryo is improved, and the extrusion template 3 is shorter in the injection cavity seat 4.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preform production device, comprising a fixed shell (1) and an injection assembly (101), wherein the fixed shell (1) comprises a sliding rod (2), a cooling circulation system, an extrusion template (3), an injection cavity seat (4) and a hydraulic assembly (102), wherein the extrusion template (3) and the injection cavity seat (4) slide on the sliding rod (2), characterized in that: A transmission belt (5) is arranged at the bottom of the fixed shell (1), and the transmission belt (5) is used to transmit the bottle preform. A movable plate (6) is arranged at the rear end of the extrusion template (3). A mounting block (301) is arranged on the surface of the extrusion template (3). A convex mold (302) is arranged on the surface of the mounting block (301). A demoulding component is arranged on the surface of the convex mold (302). The movable plate (6) is used to cooperate with the demoulding component to make the bottle preform fall off.

2. A preform production device according to claim 1, characterized in that: The surface of the mounting block (301) is provided with a mounting hole (304), the movable plate (6) is provided with a partition (601), the surface of the partition (601) is provided with a through hole (602), the demoulding assembly comprises a push ring (7), a connecting rod (701), a sliding ring (703), a telescopic spring (702) and a stopper (704), and the push ring (7) is arranged on the side of the male mold (302) and the extrusion template (3) facing the injection cavity seat (4) At the joint of the extrusion template (3) and the movable plate (6), the connecting rod (701) passes through the mounting hole (304), the slip ring (703) and the through hole (602); the connecting rod (701) and the movable plate (6) are connected via a stopper (704); the two slip rings (703) are respectively installed on the same axis between the extrusion template (3) and the movable plate (6); and the slip rings (703) are connected via a telescopic spring (702); and the connecting rod (701) and the push ring (7) are connected.

3. The preform production device according to claim 2, characterized in that: The number of the connecting rods (701) is at least two, and the connecting rods (701) are symmetrically arranged.

4. The preform production device according to claim 3, characterized in that: The hydraulic assembly (102) comprises a telescopic rod, which passes through the partition (601) and is connected to the extrusion template (3).

5. The preform production device according to claim 4, characterized in that: A limiting ring (201) is provided on the sliding rod (2), and the limiting ring (201) is used for limiting the movement of the moving plate (6).

6. The preform production device according to claim 5, characterized in that: A cooling groove (303) is arranged inside the male mold (302), and the cooling groove (303) extends to the rear end of the male mold (302), and the cooling groove (303) is connected to a cooling circulation system.

7. The preform production device according to claim 6, characterized in that: The cooling circulation system comprises a cooling circulation pipe (103), and the cooling circulation pipe (103) is installed at the rear end of the moving plate (6).

8. The preform production device according to claim 7, characterized in that: The cooling groove (303) is arranged in a cross-shaped structure, and the lower end of the outer side of the cooling groove (303) is a liquid inlet (8), and the upper end is a liquid outlet (801).

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