Flow regulating device for injection molding processing of plastic products

Abstract

The utility model discloses a flow regulating device for plastic product injection molding processing, and relates to the technical field of plastic product injection molding, the flow regulating device comprises an opening regulating valve body and injection molding valve pipes, the upper and lower sides of the opening regulating valve body are fixedly embedded with the injection molding valve pipes, one end of the opening regulating valve body is provided with a displacement regulating assembly, and the other end of the opening regulating valve body is provided with a flow regulating valve. An opening degree adjusting valve element is installed at the end, located in the opening degree adjusting valve body, of the displacement adjusting assembly, the central axes of the two injection molding valve pipes are located on the same straight line, an injection molding channel is formed between the injection molding valve pipes and an inner cavity of the opening degree adjusting valve body, and the inner cavity of the opening degree adjusting valve body is divided into two independent cavities through the injection molding channel. The handle is manually rotated to drive the column casing to rotate, the column casing drives the lead screw to move through threads, and the opening adjusting valve element is pushed to move in the opening adjusting valve body, so that the alignment degree between the injection molding channel and the opening groove is changed, accurate adjustment of the flow is achieved, and the defects of plastic products caused by unstable flow are avoided.

Description

Technical Field

[0001] This utility model relates to the field of plastic product injection molding technology, and in particular to a flow regulating device for plastic product injection molding. Background Technology

[0002] Injection molding is a process in which plastic granules or powders are melted at high temperature and then injected into a closed mold under high pressure. After cooling, the product is formed into the desired shape. Injection molding has a short production cycle and is suitable for large-scale production. With the advancement of technology, injection molding is paying more and more attention to high precision and high quality.

[0003] Chinese Patent Publication No. CN217862534U discloses a flow regulation structure for injection molds, relating to the field of injection molds. The structure includes a mold body, with a valve core located above the flow channel inside the mold body. A bolt is fixed to the top of the valve core. A cleaning mechanism is located below the valve core inside the mold body. A limiting mechanism is provided on the inner side of the connecting frame. This invention, through the cleaning mechanism, allows the bolt to be continuously rotated during valve core cleaning, causing the valve core to move downwards. This movement of the valve core causes the limiting mechanism to lose its restraint on the bottom plate. Continuing to rotate the bolt pushes the bottom plate downwards. During the rotation of the valve core, friction occurs with the scraper, thus cleaning the bottom of the valve core. Simultaneously, as the valve core moves downwards, the top of the limiting groove rubs against the outer wall of the valve core, cleaning the outer side of the valve core.

[0004] The above-mentioned technology achieves the cleaning of the outer side of the valve core through a cleaning mechanism installed on the valve body. However, the inner wall structure of the valve body is tortuous, which is not conducive to the rinsing and cleaning of residual material. Therefore, this utility model discloses a flow regulating device for injection molding of plastic products to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a flow regulating device for injection molding of plastic products, so as to solve the problem mentioned in the background art that the valve body of the traditional flow regulating device for injection molding of plastic products has a tortuous internal structure, which is not conducive to the rinsing and cleaning of residual material.

[0006] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems:

[0007] A flow regulating device for injection molding of plastic products includes an opening regulating valve body and an injection valve tube. The opening regulating valve body has injection valve tubes fixedly embedded on both its upper and lower sides. A displacement regulating component is installed at one end of the opening regulating valve body. An opening regulating valve core is installed at the end of the displacement regulating component located inside the opening regulating valve body. The central axes of the two injection valve tubes are located on the same straight line. An injection channel is formed between the injection valve tube and the inner cavity of the opening regulating valve body. The injection channel divides the inner cavity of the opening regulating valve body into two independent chambers.

[0008] The opening adjustment valve core has two ends located in two independent chambers, and an opening groove is provided between the upper and lower side walls of the opening adjustment valve core. A wall scraper is fixed between the upper and lower inner walls of one of the independent chambers and located in the opening groove.

[0009] As a further embodiment of this utility model, a narrow groove is provided at the position where the opening adjustment valve body and the injection molding valve tube are connected, and the inner diameter of the injection molding valve tube gradually increases from the narrow groove to the end farther away from the opening adjustment valve body.

[0010] As a further embodiment of this utility model, the width of the narrow groove is the same as the width of the opening adjustment valve core, and the length of the opening groove is the sum of the lengths of the scraper block and the narrow groove.

[0011] As a further embodiment of this utility model, the displacement adjustment assembly includes a cylinder rotatably embedded on one end face of the opening adjustment valve body, a handle fixed at one end of the cylinder away from the opening adjustment valve body, a lead screw threadedly connected to the cylinder, and the end of the lead screw away from the cylinder fixedly connected to the opening adjustment valve core.

[0012] As a further embodiment of this invention, the outer side of the handle is covered with a ceramic heat insulation layer.

[0013] As a further embodiment of this utility model, a flange is fixed at one end of the injection molding valve tube away from the degree regulating valve body.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model discloses a flow regulating device for injection molding of plastic products. By manually turning the handle, the column cylinder is rotated, and the screw driven by the column cylinder thread moves, pushing the opening regulating valve core to move within the opening regulating valve body, thereby changing the alignment between the injection channel and the opening groove, achieving precise flow regulation and avoiding defects in plastic products caused by unstable flow.

[0016] 2. This utility model discloses a flow regulating device for injection molding of plastic products. After injection molding, rotating the handle causes the opening regulating valve core to move in the reverse direction to the initial position. The hot melt plastic adhering to the opening groove is scraped off by the scraper until the injection channel and the opening groove are completely aligned. This facilitates the cleaning of the device's interior, reduces cleaning time, improves production efficiency, effectively solves the problem of hot melt plastic residue in the injection channel and opening groove, prevents the residual hot melt plastic from solidifying and affecting the flow regulation accuracy and normal operation of the device in subsequent injection molding processes, and extends the service life of the device. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a side view of a flow regulating device for injection molding of plastic products according to this utility model;

[0019] Figure 2 This is a side sectional view of a flow regulating device for injection molding of plastic products according to this utility model;

[0020] Figure 3 This is a top view of a flow regulating device for injection molding of plastic products according to this utility model;

[0021] Figure 4 This is a structural diagram of the opening adjustment valve core in a flow regulating device for injection molding of plastic products according to this utility model;

[0022] Figure 5 This utility model provides a flow regulating device for injection molding of plastic products. Figure 2 Enlarged view of the structure at point A in the middle.

[0023] The components represented by each number in the attached diagram are listed below: 1. Opening adjustment valve body; 2. Injection molding valve tube; 3. Displacement adjustment assembly; 4. Opening adjustment valve core; 5. Injection molding channel; 6. Independent chamber; 11. Scraper block; 12. Narrow groove; 31. Column; 32. Handle; 33. Lead screw; 41. Opening groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Please see Figure 1-5 This utility model provides a flow regulating device for injection molding of plastic products, including an opening regulating valve body 1 and an injection valve tube 2. The upper and lower sides of the opening regulating valve body 1 are fixedly embedded with injection valve tubes 2, and the central axes of the two injection valve tubes 2 are located on the same straight line.

[0026] Specifically, a vertical channel is formed between the two injection valve tubes 2 to allow the injection plastic to pass through, and this vertical channel is perpendicular to the opening adjustment valve body 1, so that the two form a cross-shaped flow channel structure, ensuring that the molten plastic can pass vertically through the valve body to achieve flow regulation.

[0027] Furthermore, a flange is fixed to one end of the injection molding valve tube 2 away from the degree regulating valve body 1;

[0028] Specifically, the flange allows the injection valve pipe 2 to be reliably connected to the end of the injection machine or the casting port of the injection mold, ensuring that the hot melt plastic can flow smoothly throughout the injection system during the injection process without leakage, thus ensuring that the injection process can proceed normally.

[0029] Furthermore, an opening groove 41 is provided between the upper and lower side walls of the opening adjustment valve core 4, and a narrow groove 12 is provided at the position where the opening adjustment valve body 1 and the injection molding valve tube 2 are connected. The inner diameter of the injection molding valve tube 2 gradually increases from the narrow groove 12 to the end away from the opening adjustment valve body 1.

[0030] Specifically, the gradually expanding inner diameter of the injection valve tube 2 helps to smoothly guide the flow of hot melt plastic. By adjusting the position of the opening adjustment valve core 4, the alignment between the injection channel 5 and the opening groove 41 can be changed, thereby precisely controlling the injection flow rate. After the narrow groove 12 is precisely aligned with the injection channel 5, a regular flow channel inner wall can be formed, which facilitates the flushing and cleaning of the inside of the flow regulation device.

[0031] Furthermore, an injection channel 5 is formed between the injection valve tube 2 and the inner cavity of the opening adjustment valve body 1. The injection channel 5 divides the inner cavity of the opening adjustment valve body 1 into two independent chambers 6, and the two ends of the opening adjustment valve core 4 are respectively located in the two independent chambers 6.

[0032] Specifically, the injection channel 5 is the necessary path for hot melt plastic to enter the inner cavity of the opening adjustment valve body 1 from the injection valve tube 2. By dividing the inner cavity of the opening adjustment valve body 1 into two independent chambers 6, the opening adjustment valve core 4 can move between the two chambers, thereby achieving precise control of the opening of the injection channel 5. The two ends of the opening adjustment valve core 4 are located in the two independent chambers 6 respectively, which can ensure the sealing of the structure.

[0033] Furthermore, a wall scraping block 11 is fixed between the upper and lower inner walls of one of the independent chambers 6 and within the opening groove 41. The width of the narrow groove 12 is the same as the width of the opening adjustment valve core 4, and the length of the opening groove 41 is the sum of the lengths of the wall scraping block 11 and the narrow groove 12.

[0034] Specifically, after injection molding, when the opening regulating valve core 4 moves in the reverse direction, the scraper block 11 can scrape off the hot melt plastic attached to the opening groove 41, preventing it from solidifying and affecting the subsequent flow regulation accuracy and normal operation of the device. This reduces equipment failures and damage caused by residues, thereby extending the service life of the device and reducing maintenance costs.

[0035] Furthermore, a displacement adjusting component 3 is installed at one end of the opening adjusting valve body 1, and an opening adjusting valve core 4 is installed at one end of the displacement adjusting component 3 located inside the opening adjusting valve body 1. The displacement adjusting component 3 includes a cylinder 31 rotatably embedded on one end face of the opening adjusting valve body 1. A handle 32 is fixed at one end of the cylinder 31 away from the opening adjusting valve body 1. A lead screw 33 is threadedly connected to the cylinder 31. The end of the lead screw 33 away from the cylinder 31 is fixedly connected to the opening adjusting valve core 4.

[0036] Specifically, the operator controls the rotation of the cylinder 31 by turning the handle 32. The internal thread of the cylinder 31 engages with the thread of the lead screw 33, causing the lead screw 33 to move axially when the cylinder 31 rotates. The movement of the lead screw 33 drives the opening adjustment valve core 4 to move within the opening adjustment valve body 1. The movement of the opening adjustment valve core 4 changes the alignment between the injection channel 5 and the opening groove 41. By changing the alignment, the injection flow can be precisely controlled, thereby avoiding defects in plastic products caused by unstable flow.

[0037] Furthermore, the outer side of the handle 32 is covered with a ceramic heat insulation layer;

[0038] Specifically, the ceramic heat insulation layer is a heat insulation layer made of ceramic material that covers the outside of the handle 32. This covering method can fully protect the handle 32 and prevent heat from being directly transferred to the handle 32, thereby protecting the user from being burned by the handle 32 overheating during operation.

[0039] Working principle: In use, the flow regulating device is connected to the end of the injection machine. Hot melt plastic enters the mold cavity of the injection mold through the injection channel 5. When it is necessary to adjust the injection flow, manually turn the handle 32. The handle 32 drives the column cylinder 31 to rotate. The threaded drive screw 33 of the column cylinder 31 moves, which can push the opening adjustment valve core 4 to move within the opening adjustment valve body 1, changing the alignment between the injection channel 5 and the opening groove 41, thereby adjusting the opening size of the flow regulating device to achieve precise control of the injection flow. After injection, turn the handle 32 to reset, and the opening adjustment valve core 4 moves back to the initial position. During this process, the hot melt plastic attached to the opening groove 41 will be scraped off until the injection channel 5 and the opening groove 41 are completely aligned, which facilitates the cleaning of the inside of the flow regulating device.

Claims

1. A flow regulating device for injection molding of plastic products, comprising an opening regulating valve body (1) and an injection valve tube (2), characterized in that, The upper and lower sides of the opening adjustment valve body (1) are fixedly embedded with injection valve tubes (2). A displacement adjustment component (3) is installed at one end of the opening adjustment valve body (1). An opening adjustment valve core (4) is installed at one end of the displacement adjustment component (3) inside the opening adjustment valve body (1). The central axes of the two injection valve tubes (2) are on the same straight line. An injection channel (5) is formed between the injection valve tube (2) and the inner cavity of the opening adjustment valve body (1). The injection channel (5) divides the inner cavity of the opening adjustment valve body (1) into two independent chambers (6). The two ends of the opening adjustment valve core (4) are located in two independent chambers (6), and an opening groove (41) is provided between the upper and lower side walls of the opening adjustment valve core (4). A scraper block (11) is fixed between the upper and lower inner walls of one of the independent chambers (6) and located in the opening groove (41).

2. The flow regulating device for injection molding of plastic products according to claim 1, characterized in that: A narrow groove (12) is provided at the position where the opening adjustment valve body (1) and the injection valve tube (2) are connected. The inner diameter of the injection valve tube (2) gradually increases from the narrow groove (12) to the end far away from the opening adjustment valve body (1).

3. The flow regulating device for injection molding of plastic articles of claim 2, wherein: The width of the narrow groove (12) is the same as the width of the opening adjustment valve core (4), and the length of the opening groove (41) is the sum of the lengths of the scraper block (11) and the narrow groove (12).

4. The flow regulating device for injection molding of plastic articles of claim 1 wherein: The displacement adjustment assembly (3) includes a cylinder (31) rotatably embedded on one end face of the opening adjustment valve body (1). A handle (32) is fixed to one end of the cylinder (31) away from the opening adjustment valve body (1). A lead screw (33) is threadedly connected to the cylinder (31). The end of the lead screw (33) away from the cylinder (31) is fixedly connected to the opening adjustment valve core (4).

5. The flow regulating device for injection molding of plastic articles of claim 4 wherein: The outer side of the handle (32) is covered with a ceramic heat insulation layer.

6. The flow regulating device for injection molding of plastic articles of claim 1 wherein: The injection-molded valve tube (2) is fixed with a flange at one end away from the degree regulating valve body (1).

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