Valve pin of hot melting runner of mold

Abstract

The utility model discloses a valve pin of a hot melting runner of a mold, and relates to the technical field of valve pins. The valve pin of the mold hot melting runner comprises a valve pin body, a valve sleeve is arranged on the outer surface of the valve pin body, the valve pin body comprises a valve pin outer layer and a valve pin inner core, an inner cavity is formed in the valve sleeve, a guide seat is fixedly connected to the inner surface of the inner cavity, and a guide connecting plate is arranged on the inner surface of the guide seat in a sleeving mode. The two sides of the guide connecting plate are fixedly connected with a movable push rod and a supporting spring correspondingly, the end, away from the guide connecting plate, of the movable push rod is fixedly connected with a supporting top block, the bottom of the valve sleeve is fixedly connected with a cleaning scraper, and the inner surface of the cleaning scraper is fixedly connected with an elastic folded plate. Therefore, the situation that the valve pin deforms due to the stress of the hot melt fluid is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of valve pins, in particular to a valve pin for a hot melt flow channel of a mold. Background Art

[0002] The valve pin in an injection mold is a component used to control the flow of plastic during the injection molding process. The valve pin is usually installed in the nozzle part of the mold. During the injection molding process, the valve pin regulates the flow of the plastic melt by controlling the opening and closing of the valve core. When the injection molding machine applies pressure, the plastic melt enters the mold through the valve pin. The valve pin ensures that the plastic is injected into the mold at a stable flow rate and pressure, thereby ensuring the quality and dimensional accuracy of the product.

[0003] The valve pin of the existing mold hot melt runner is easily deformed due to the stress of the hot fluid in the hot melt channel for a long time, resulting in inability to align with the mold gate. The valve pin itself has poor rigidity, and the hot melt fluid is easily adhered to the outer surface of the valve pin. When the valve pin moves, the hot melt fluid may enter between the valve pin and the valve sleeve, causing the valve pin to get stuck and affecting the normal operation of the valve pin. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a valve pin for a hot melt flow channel of a mold to solve the existing problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: the valve pin of the mold hot melt runner includes a valve pin body, the outer surface of the valve pin body is provided with a valve sleeve, the valve pin body includes a valve pin outer layer and a valve pin inner core, the interior of the valve sleeve is provided with an inner cavity, the inner surface of the inner cavity is fixedly connected with a guide seat, the inner surface of the guide seat is sleeved with a guide connecting plate, the two sides of the guide connecting plate are respectively fixedly connected with a movable push rod and a support spring, the end of the movable push rod away from the guide connecting plate is fixedly connected with a support top block, the bottom of the valve sleeve is fixedly connected with a cleaning scraper, and the inner surface of the cleaning scraper is fixedly connected with an elastic folding plate.

[0006] Preferably, an adaption groove is provided inside the outer layer of the valve pin, and the outer surface of the adaption groove is adapted to the inner core of the valve pin.

[0007] Preferably, the guide seat, the guide connecting plate, the movable push rod, the supporting top block and the supporting spring are integrally arranged around the valve pin body, and the outer surface of the supporting top block contacts the outer surface of the valve pin body.

[0008] Preferably, the outer surface of the movable push rod is adapted to the inner sleeve of the guide seat, and the end of the support spring away from the guide connecting plate is fixedly connected to the inner surface of the inner cavity.

[0009] Preferably, the bottom of the cleaning scraper is in contact with the outer surface of the valve pin body, and the top of the elastic folding plate is fixedly connected to the lower surface of the valve sleeve.

[0010] Beneficial effects

[0011] The utility model provides a valve pin for a hot melt flow channel of a mold. It has the following beneficial effects:

[0012] (1) The valve pin of the hot melt flow channel of the mold improves the rigidity of the valve pin body by setting the valve pin body to be made of stainless steel outer layer and alloy steel inner core. At the same time, a support spring, a support top block, a movable push rod, a guide connecting plate and a guide seat are set in the valve sleeve to provide support for the outside of the valve pin body, further reducing the possibility of deformation of the valve pin body, thereby preventing the valve pin from being deformed due to the stress of the hot melt fluid.

[0013] (2) The valve pin of the hot melt flow channel of the mold automatically cleans away the hot melt fluid on the surface of the valve pin body during movement through the cooperation between the cleaning scraper and the elastic folding plate, so as to prevent the hot melt fluid from entering the valve sleeve along with the valve pin body, thereby preventing the valve pin from getting stuck and extending the service life of the valve pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a front view planar structural diagram of the entire utility model;

[0016] Figure 3 This is a schematic diagram of the overall top plan structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the enlarged structure of the utility model A.

[0018] In the figure: 1. Valve pin body; 101. Valve pin outer layer; 102. Valve pin inner core; 103. Adapter groove; 2. Valve sleeve; 3. Inner cavity; 4. Guide seat; 5. Guide connecting plate; 6. Movable push rod; 7. Support top block; 8. Support spring; 9. Cleaning scraper; 10. Elastic folding plate. DETAILED DESCRIPTION

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

[0020] Embodiment 1:

[0021] like Figure 1-4 As shown, the utility model provides a valve pin for a hot melt runner of a mold, comprising a valve pin body 1, the outer surface of the valve pin body 1 is provided with a valve sleeve 2, the valve pin body 1 comprises a valve pin outer layer 101 and a valve pin inner core 102, an inner cavity 3 is provided inside the valve sleeve 2, the inner surface of the inner cavity 3 is fixedly connected with a guide seat 4, the inner surface of the guide seat 4 is sleeved with a guide connecting plate 5, both sides of the guide connecting plate 5 are respectively fixedly connected with a movable push rod 6 and a support spring 8, the end of the movable push rod 6 away from the guide connecting plate 5 is fixedly connected with a support top block 7, the bottom of the valve sleeve 2 is fixedly connected with a cleaning scraper 9, and the inner surface of the cleaning scraper 9 is fixedly connected with an elastic folding plate 10.

[0022] Specifically, an adaption groove 103 is provided inside the valve pin outer layer 101 , and an outer surface of the adaption groove 103 is adapted to the valve pin inner core 102 .

[0023] Specifically, the guide seat 4 , the guide connecting plate 5 , the movable push rod 6 , the support top block 7 and the support spring 8 are integrally arranged around the valve pin body 1 , and the outer surface of the support top block 7 contacts the outer surface of the valve pin body 1 .

[0024] Specifically, the outer surface of the movable push rod 6 is fitted into the inner sleeve of the guide seat 4 , and one end of the support spring 8 away from the guide connecting plate 5 is fixedly connected to the inner surface of the inner cavity 3 .

[0025] Specifically, the bottom of the cleaning scraper 9 contacts the outer surface of the valve pin body 1 , and the top of the elastic folding plate 10 is fixedly connected to the lower surface of the valve sleeve 2 .

[0026] The working principles and beneficial effects of the above embodiments.

[0027] When in use, the valve pin body 1 is composed of a valve pin outer layer 101 and a valve pin inner core 102. The valve pin outer layer 101 is made of stainless steel, and the valve pin inner core 102 is made of alloy steel. The alloy steel with high strength and hardness is used to support the valve pin outer layer 101. At the same time, the shape of the valve pin inner core 102 is matched to increase the contact area with the valve pin outer layer 101, so as to disperse the stress on the valve pin outer layer 101 to the valve pin inner core 102, thereby improving the rigidity of the valve pin body 1. When the valve pin body 1 is installed with the valve sleeve 2, the support spring 8 In the compressed state, the support top block 7 is pressed against the valve pin body 1, and the elastic force of the support spring 8 cooperates with the support top block 7 to apply a supporting force to the valve pin body 1, reducing the possibility of deformation of the valve pin body 1. When the valve pin body 1 moves, the cleaning scraper 9 scrapes off the hot melt fluid attached to the valve pin body 1 to prevent the hot melt fluid from entering the valve sleeve 2 along with the valve pin body 1, thereby preventing the valve pin from getting stuck. The elasticity of the elastic folding plate 10 itself is used to provide support for the cleaning scraper 9 to prevent the cleaning scraper 9 from scraping off the hot melt fluid for a long time and causing large deformation.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve pin for a hot melt flow channel of a mold, comprising a valve pin body (1), characterized in that: The outer surface of the valve pin body (1) is provided with a valve sleeve (2), and the valve pin body (1) includes a valve pin outer layer (101) and a valve pin inner core (102). The interior of the valve sleeve (2) is provided with an inner cavity (3), and the inner surface of the inner cavity (3) is fixedly connected to a guide seat (4). The inner surface of the guide seat (4) is sleeved with a guide connecting plate (5), and the two sides of the guide connecting plate (5) are respectively fixedly connected to a movable push rod (6) and a support spring (8), and the end of the movable push rod (6) away from the guide connecting plate (5) is fixedly connected to a support top block (7), and the bottom of the valve sleeve (2) is fixedly connected to a cleaning scraper (9), and the inner surface of the cleaning scraper (9) is fixedly connected to an elastic folding plate (10).

2. The valve pin of the mold hot melt runner according to claim 1, characterized in that: An adaption groove (103) is provided inside the valve pin outer layer (101), and the outer surface of the adaption groove (103) is adapted to the valve pin inner core (102).

3. The valve pin of the mold hot melt runner according to claim 1, characterized in that: The guide seat (4), the guide connecting plate (5), the movable push rod (6), the supporting top block (7) and the supporting spring (8) are integrally arranged around the valve pin body (1), and the outer surface of the supporting top block (7) contacts the outer surface of the valve pin body (1).

4. The valve pin of the mold hot melt runner according to claim 1, characterized in that: The outer surface of the movable push rod (6) is fitted into the inner sleeve of the guide seat (4), and the end of the support spring (8) away from the guide connecting plate (5) is fixedly connected to the inner surface of the inner cavity (3).

5. The valve pin of the mold hot melt runner according to claim 1, characterized in that: The bottom of the cleaning scraper (9) contacts the outer surface of the valve pin body (1), and the top of the elastic folding plate (10) is fixedly connected to the lower surface of the valve sleeve (2).

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