Automatic glue breaking opening structure for flat glue feeding of injection molding part

Abstract

The utility model discloses an injection-molded part flat glue feeding automatic glue breaking port structure, which relates to the technical field of injection molds and comprises a water gap material pipe, flat glue feeding inlet pipes are fixedly arranged on the left side and the right side of the surface of the water gap material pipe, a plug shell is fixedly arranged at the front end of the water gap material pipe, and an air cylinder is fixedly arranged on the inner surface of the plug shell. The movable end of the air cylinder penetrates through the water gap material pipe and is fixedly provided with a sealing plug, and a flow dividing head is fixedly arranged at the tail end of the sealing plug. Compared with an existing common injection molding part flat glue feeding automatic glue breaking opening structure, the injection molding part flat glue feeding automatic glue breaking opening structure can adjust the feeding flow and the injection molding pressure of the flat glue feeding inlet pipe, the injection molding pressure flow can be flexibly adjusted according to different injection molding requirements, and the situation that the pressure is too large, so that glue flows, and tensile stress is generated is avoided; and by means of the flow dividing head, it is ensured that when the sealing plug is adjusted, the flow of the glue received by the flat glue inlet pipes on the two sides can be the same.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an automatic glue-breaking structure for parallel glue feeding of injection molded parts. Background Art

[0002] There are many styles of gluing for plastic parts, among which plane gluing is widely used in some thin-walled parts. For thin-walled plastic parts, plane gluing is used, the product has good filling fluidity, appearance and dimensional stability.

[0003] For example, the public document with application number 202221674351.7 discloses an automatic glue-breaking structure for flat glue feeding of injection molded parts. The utility model is designed with three ejector plates and two ejector pins. The injection molded product and the sprue material are ejected, separated and demolded in sequence. The secondary ejection mechanism is cleverly designed and has high production efficiency. However, the automatic glue-breaking structure for flat glue feeding of injection molded parts makes it difficult to effectively and reliably regulate the injection speed and pressure. If the pressure or speed is too high during the injection molding process, a certain tensile stress will be generated, which will cause the sprue to break easily during cooling and molding, affecting product quality.

[0004] Therefore, in view of this, the shortcomings of the existing structure are studied and improved, and an automatic glue cut-off structure for flat glue feeding of injection molded parts is proposed. Utility Model Content

[0005] The utility model aims to provide an automatic glue cut-off structure for flat glue feeding of injection molded parts to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection molded part flat glue feed automatic cut-off structure, comprising a sprue material pipe, flat glue feed inlet pipes are fixedly arranged on the left and right sides of the surface of the sprue material pipe, a plug shell is fixedly arranged at the front end of the sprue material pipe, a cylinder is fixedly arranged on the inner surface of the plug shell, a sealing plug is fixedly arranged on the movable end of the cylinder passing through the sprue material pipe, and a diverter is fixedly arranged on the end of the sealing plug.

[0007] Preferably, the sealing plug is made of heat-resistant rubber material, and the surface of the sealing plug is slidably fitted with the inner surface of the nozzle material pipe.

[0008] Preferably, the length of the sealing plug is slightly larger than the diameter of the pipe opening of the flat glue inlet pipe, and the shape of the diverter head is conical.

[0009] Preferably, a heat-conducting ring is fixedly provided in the middle of the surface of the sprue material pipe, and the flat glue inlet pipe passes through the middle of the heat-conducting ring.

[0010] Preferably, the heat-conducting ring is made of metal copper, and a heating wire is fixedly arranged around the inner surface of the heat-conducting ring.

[0011] Preferably, fins are fixedly provided on the front and rear sides of the surface of the heat-conducting ring, and the fins and the heat-conducting ring are made of the same material.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model uses the arrangement of the cylinder, the sealing plug and the diverter head. The cylinder can be used to push and pull the sealing plug to move forward and backward in the nozzle material pipe, so that the sealing plug is located at different positions of the nozzle material pipe to control the opening size of the flat glue inlet pipe, thereby adjusting the feed flow rate and injection pressure of the flat glue inlet pipe. The injection pressure and flow can be flexibly adjusted according to different injection requirements to avoid the situation where the pressure is too high to cause the rubber flow to produce tensile stress, resulting in the nozzle being easy to break during the cooling process. The diverter head ensures that when the sealing plug is adjusted, the rubber flow rate received by the flat glue inlet pipes on both sides can be the same;

[0014] 2. The utility model dissipates heat through the heating wire through the arrangement of the heat-conducting ring, the heating wire and the heat is transferred through the inner side of the heat-conducting ring, the sprue material pipe and the flat glue inlet pipe. The rubber inside the sprue material pipe and the flat glue inlet pipe can be heated to avoid the rubber cooling and condensation, which may cause blockage in the flow channel. The fins can assist the outer side of the heat-conducting ring to accelerate the heat dissipation, to avoid the heat outside the heat-conducting ring from accumulating between the molds and being unable to dissipate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall front view structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model from top view;

[0017] Figure 3 It is a rear view cross-sectional structural schematic diagram of the nozzle material pipe of the utility model.

[0018] In the figure: 1. sprue material pipe; 2. flat glue inlet pipe; 3. plug shell; 4. cylinder; 5. sealing plug; 6. diverter; 7. heat transfer ring; 8. heating wire; 9. fin. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-Figure 3As shown, an automatic glue-cutting structure for flat glue inlet of injection molded parts comprises a sprue pipe 1, flat glue inlet pipes 2 are fixedly arranged on the left and right sides of the surface of the sprue pipe 1, a plug shell 3 is fixedly arranged at the front end of the sprue pipe 1, a cylinder 4 is fixedly arranged on the inner surface of the plug shell 3, a movable end of the cylinder 4 passes through the sprue pipe 1 and a sealing plug 5 is fixedly arranged, a diverter 6 is fixedly arranged at the end of the sealing plug 5, the sealing plug 5 is made of heat-resistant rubber material, and the surface of the sealing plug 5 is slidably fitted with the inner surface of the sprue pipe 1, the length of the sealing plug 5 is slightly larger than the pipe mouth diameter of the flat glue inlet pipe 2, and the shape of the diverter 6 is conical, a heat-conducting ring 7 is fixedly arranged on the middle part of the surface of the sprue pipe 1, and the flat glue inlet pipe 2 passes through the middle part of the heat-conducting ring 7, the heat-conducting ring 7 is made of metal copper, and a heating wire 8 is fixedly arranged around the inner surface of the heat-conducting ring 7, fins 9 are fixedly arranged on the front and back sides of the surface of the heat-conducting ring 7, and the fins 9 are made of the same material as that of the heat-conducting ring 7.

[0021] Furthermore, the cylinder 4 can push and pull the sealing plug 5 to move forward and backward in the nozzle material pipe 1.

[0022] Furthermore, the sealing plug 5 fits the inner surface of the sprue material pipe 1, so that when it moves, it can control the opening size of the parallel glue inlet pipe 2 by utilizing different positions, thereby adjusting the feed flow rate and injection pressure of the parallel glue inlet pipe 2.

[0023] Furthermore, the flow divider 6 utilizes the conical front end portion to ensure that when the sealing plug 5 is adjusted, the rubber flow rates received by the parallel rubber inlet pipes 2 on both sides are the same.

[0024] Furthermore, the heat-conducting ring 7 can effectively transfer the heat of the heating wire 8, heat the sprue material pipe 1 and the flat glue inlet pipe 2, and prevent the glue from condensing.

[0025] Furthermore, the fins 9 can assist the outer side of the heat-conducting ring 7 to accelerate the heat dissipation, thereby preventing the heat on the outer side of the heat-conducting ring 7 from accumulating between the molds and being unable to dissipate.

[0026] Working principle: When using the automatic glue cut-off structure for parallel glue feeding of injection molding parts, first, according to the pressure requirements of different injection molding parts, the cylinder 4 can be used to push and pull the sealing plug 5 to move forward and backward in the sprue material pipe 1, so that the sealing plug 5 is located at different positions of the sprue material pipe 1 to control the opening size of the parallel glue feeding inlet pipe 2, thereby adjusting the feeding flow rate and injection pressure of the parallel glue feeding inlet pipe 2. The injection molding pressure and flow rate can be flexibly adjusted according to different injection molding requirements, and the diverter 6 can ensure that when the sealing plug 5 is adjusted, the glue flow rate received by the parallel glue feeding inlet pipes 2 on both sides can be Similarly, then, material can be injected through the sprue material pipe 1 and the flat glue inlet pipe 2. During the injection process, heat is dissipated through the heating wire 8, and the heat is transferred through the inner side of the heat-conducting ring 7, which fits the sprue material pipe 1 and the flat glue inlet pipe 2. The glue inside the sprue material pipe 1 and the flat glue inlet pipe 2 can be heated to prevent the glue from cooling and condensing. The fins 9 can assist the outer side of the heat-conducting ring 7 to accelerate the heat dissipation to prevent the heat on the outer side of the heat-conducting ring 7 from accumulating between the molds and being unable to dissipate. This is the working principle of the automatic glue-breaking structure for the flat glue inlet of the injection molded part.

Claims

1. An automatic glue-cutting structure for parallel glue feeding of injection molded parts, comprising a nozzle material pipe (1), characterized in that: A flat glue inlet pipe (2) is fixedly provided on both left and right sides of the surface of the nozzle material pipe (1); a plug shell (3) is fixedly provided at the front end of the nozzle material pipe (1); a cylinder (4) is fixedly provided on the inner surface of the plug shell (3); a sealing plug (5) is fixedly provided at the movable end of the cylinder (4) passing through the nozzle material pipe (1); a diverter (6) is fixedly provided at the end of the sealing plug (5).

2. The automatic glue cut-off structure for parallel glue feeding of injection molded parts according to claim 1, characterized in that: The sealing plug (5) is made of heat-resistant rubber material, and the surface of the sealing plug (5) is slidably fitted to the inner surface of the nozzle material pipe (1).

3. The automatic glue cut-off structure for parallel glue feeding of injection molded parts according to claim 1, characterized in that: The length of the sealing plug (5) is slightly larger than the diameter of the pipe opening of the flat glue inlet pipe (2), and the shape of the diverter head (6) is conical.

4. The automatic glue cut-off structure for parallel glue feeding of injection molded parts according to claim 1, characterized in that: A heat-conducting ring (7) is fixedly arranged in the middle of the surface of the nozzle material pipe (1), and the flat glue inlet pipe (2) passes through the middle of the heat-conducting ring (7).

5. The automatic glue cut-off structure for parallel glue feeding of injection molded parts according to claim 4, characterized in that: The heat-conducting ring (7) is made of metal copper, and a heating wire (8) is fixedly arranged around the inner surface of the heat-conducting ring (7).

6. The automatic glue cut-off structure for parallel glue feeding of injection molded parts according to claim 4, characterized in that: Fins (9) are fixedly arranged on the front and rear sides of the surface of the heat-conducting ring (7), and the fins (9) and the heat-conducting ring (7) are made of the same material.

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