Injection molding exhaust mechanism

Abstract

The utility model relates to the technical field of exhaust mechanisms, in particular to an injection molding exhaust mechanism which comprises a forming mold, a heat dissipation hole which is horizontally formed and penetrates through the forming mold from left to right is formed in the forming mold, and an injection molding hole communicated with the forming mold is formed in the rear side of the forming mold. A sealing groove is formed in the front side of the forming die, and a sealing ring is arranged on the inner side of the sealing groove, the sealing groove, the sealing ring, the pressing die, the exhaust hole, the fixing rod, a baffle, a reset spring, a connecting plate, a driving rod, a piston, a fixing cylinder, a round hole and a rubber ring are arranged, the exhaust hole can be cleaned, the exhaust hole is prevented from being blocked, and the sealing effect is good. After a period of use, materials are accumulated on the inner side of the exhaust hole, the connecting plate is pressed downwards, the driving rod can drive the piston to move downwards, the piston can eject the materials on the inner side of the exhaust hole into the inner side of the forming mold, and therefore the exhaust hole is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust mechanisms, in particular to an injection molding exhaust mechanism. Background Art

[0002] Injection mold processing is to first add plastic into the mold, and then the mold is continuously rotated along two vertical axes and heated. Under the action of gravity and heat energy, the plastic in the mold is gradually and evenly coated, melted and adhered to the entire surface of the mold cavity, formed into the required shape, and cooled and shaped. When the molten material is injected into the mold cavity of the injection mold, the gas inside the mold cavity needs to be discharged in time to ensure that the molten material in the mold cavity is smoothly introduced. The design and application of the injection molding exhaust mechanism directly affects the quality and production efficiency of the injection molded parts. Choosing a suitable exhaust method, reasonably designing the exhaust path, and performing regular maintenance are the key to ensuring a smooth injection molding process and high product quality.

[0003] The existing injection molding exhaust mechanism mainly performs exhaust operation through the exhaust port. When exhausting, materials are easy to enter the exhaust hole. After being used for a long time, the exhaust hole is easy to be blocked and difficult to clean. In addition, some molds cannot be exposed to air during the injection molding process. Most of the existing injection molding exhaust mechanisms cannot be vacuumed, which easily affects the injection molding process. Therefore, an injection molding exhaust mechanism is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to provide an injection molding exhaust mechanism to solve the problems in the above background technology that the exhaust holes are easily blocked and the exhaust mechanism cannot be vacuumed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An injection molding exhaust mechanism comprises a molding mold, wherein a heat dissipation hole which is horizontally arranged and passes through the molding mold from left to right is provided inside the molding mold, an injection hole which passes through the molding mold is provided on the rear side of the molding mold, a sealing groove is provided on the front side of the molding mold, a sealing ring is provided on the inner side of the sealing groove, a pressing mold is fixedly connected to the sealing ring on the side away from the molding mold, an exhaust hole which is vertically arranged and passes through the molding mold is provided on the top of the molding mold, fixing rods which are vertically arranged and fixedly connected to the top of the molding mold are symmetrically provided on both sides of the exhaust hole, a baffle is fixedly connected to the top of the fixing rod, a return spring is provided on the outer side of the fixing rod, a horizontally arranged connecting plate is fixedly connected to the top of the return spring, a driving rod which is vertically arranged and passes through the connecting plate is fixedly connected to the inner side of the connecting plate, a piston is fixedly connected to the bottom end of the driving rod, a fixing cylinder is provided on the outer side of the driving rod, a circular hole which passes through the fixing cylinder is provided on the outer side of the fixing cylinder, a rubber ring is fixedly connected to the top of the fixing cylinder, and a vacuum assembly is provided above the connecting plate.

[0007] Preferably, the vacuum assembly includes a first air vent opened on the inner side of the driving rod and penetrating the driving rod from top to bottom, a second air vent opened on the inner side of the piston and penetrating the piston from top to bottom, a solenoid valve connected to the first air vent fixedly connected to the top of the driving rod, a hose connected to the solenoid valve fixedly connected to the top of the solenoid valve, and a vacuum pump fixedly connected to one end of the hose away from the solenoid valve.

[0008] Preferably, the inner diameters of the first air hole and the second air hole are the same, the first air hole and the second air hole are vertically aligned, and the vacuum pump is fixedly connected to the top of the molding die.

[0009] Preferably, the inner side of the sealing groove fits tightly with the outer side of the sealing ring, the inner side of the exhaust hole fits tightly with the outer side of the piston, the fixing rod passes through the baffle and is connected to the baffle by a sliding connection, and the bottom end of the return spring is fixedly connected to the top end of the molding mold.

[0010] Preferably, the bottom end of the fixed cylinder is fixedly connected to the top end of the forming mold, the number of the circular holes is multiple, the circular holes are evenly distributed on the outside of the fixed cylinder, and the inner side of the rubber ring is tightly fitted with the outer side of the driving rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the exhaust hole can be cleaned by the provided sealing groove, sealing ring, pressing mold, exhaust hole, fixing rod, baffle, reset spring, connecting plate, driving rod, piston, fixing cylinder, round hole and rubber ring to prevent the exhaust hole from being blocked. After a period of use, materials are accumulated inside the exhaust hole. By pressing down the connecting plate, the driving rod can drive the piston to move downward, and the piston can push the materials inside the exhaust hole into the inside of the forming mold, thereby preventing the exhaust hole from being blocked.

[0013] 2. In the utility model, the forming mold can be evacuated by means of the vacuum assembly, the first air hole, the second air hole, the solenoid valve, the hose and the vacuum pump. When vacuuming is required, the vacuum pump is started and the air in the forming mold can be discharged through the first air hole, the second air hole, the hose and the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the overall disassembled structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the molding die of the utility model;

[0017] Figure 4 For this utility model Figure 3 A schematic diagram of the structure at A;

[0018] Figure 5 This is a schematic diagram of the structure of the first air hole and the second air hole of the utility model.

[0019] In the figure: 1. molding die; 2. heat dissipation hole; 3. injection hole; 4. sealing groove; 5. sealing ring; 6. pressing die; 7. exhaust hole; 8. fixing rod; 9. baffle; 10. reset spring; 11. connecting plate; 12. driving rod; 13. piston; 14. fixing cylinder; 15. round hole; 16. rubber ring; 17. vacuum assembly; 1701. first air vent; 1702. second air vent; 1703. solenoid valve; 1704. hose; 1705. vacuum pump. DETAILED DESCRIPTION

[0020] 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.

[0021] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0022] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] An injection molding exhaust mechanism comprises a molding die 1, a heat dissipation hole 2 which is horizontally arranged and penetrates the molding die 1 from left to right is opened inside the molding die 1, an injection hole 3 which penetrates the molding die 1 is opened on the rear side of the molding die 1, a sealing groove 4 is opened on the front side of the molding die 1, a sealing ring 5 is arranged inside the sealing groove 4, a pressing die 6 is fixedly connected to the side of the sealing ring 5 which is away from the molding die 1, an exhaust hole 7 which is vertically arranged and penetrates the molding die 1 is opened on the top of the molding die 1, and exhaust holes 7 which are vertically arranged and fixedly connected to the top of the molding die 1 are symmetrically arranged on both sides of the exhaust hole 7. A fixing rod 8 is provided at the end, a baffle plate 9 is fixedly connected to the top of the fixing rod 8, a return spring 10 is provided on the outside of the fixing rod 8, a horizontally arranged connecting plate 11 is fixedly connected to the top of the return spring 10, a driving rod 12 which is vertically arranged and passes through the connecting plate 11 is fixedly connected to the inside of the connecting plate 11, a piston 13 is fixedly connected to the bottom end of the driving rod 12, a fixing cylinder 14 is provided on the outside of the driving rod 12, a circular hole 15 which passes through the fixing cylinder 14 is opened on the outside of the fixing cylinder 14, a rubber ring 16 is fixedly connected to the top of the fixing cylinder 14, and a vacuum assembly 17 is provided above the connecting plate 11.

[0025] The vacuum assembly 17 includes a first air hole 1701 which is opened on the inner side of the driving rod 12 and passes through the driving rod 12 from top to bottom, a second air hole 1702 which passes through the piston 13 from top to bottom is opened on the inner side of the piston 13, a solenoid valve 1703 which passes through the first air hole 1701 is fixedly connected to the top of the driving rod 12, a hose 1704 which passes through the solenoid valve 1703 is fixedly connected to the top of the solenoid valve 1703, and a vacuum pump 1705 is fixedly connected to one end of the hose 1704 which is away from the solenoid valve 1703. The arrangement of the vacuum assembly 17 can prevent the reaction between the material and the air and improve the product quality. The inner diameters of the first air hole 1701 and the second air hole 1702 are the same, the first air hole 1701 and the second air hole 1702 are vertically aligned, and the vacuum pump 1705 is fixed. Connected to the top of the molding mold 1, the vacuum pump 1705 can extract the air inside the molding mold 1 through the first air vent 1701, the second air vent 1702, the hose 1704 and the solenoid valve 1703, the inner side of the sealing groove 4 fits tightly with the outer side of the sealing ring 5, the inner side of the exhaust hole 7 fits tightly with the outer side of the piston 13, the fixed rod 8 passes through the baffle 9 and is connected to the baffle 9 in a sliding manner, the bottom end of the return spring 10 is fixedly connected to the top of the molding mold 1, the inner side of the sealing groove 4 fits tightly with the outer side of the sealing ring 5, and a closed environment can be formed inside the molding mold 1, the bottom end of the fixed cylinder 14 is fixedly connected to the top of the molding mold 1, the number of the circular holes 15 is multiple, and the circular holes 15 are evenly distributed on the outside of the fixed cylinder 14, and the inner side of the rubber ring 16 fits tightly with the outer side of the driving rod 12.

[0026] Working process: Power on the equipment before use and install the device on the injection molding machine. When performing injection molding, first place the pressing mold 6 on one side of the molding mold 1 so that the inner side of the sealing groove 4 fits tightly with the outer side of the sealing ring 5. A closed environment can be formed inside the molding mold 1. Then start the vacuum pump 1705 and open the solenoid valve 1703. The air in the molding mold 1 can be discharged through the first air vent 1701, the second air vent 1702, the hose 1704 and the vacuum pump 1705. At this time, due to the low air pressure inside the molding mold 1, the piston 13 moves downward on the inside of the exhaust hole 7. At this time, the return spring 10 is compressed and a vacuum environment is formed inside the molding mold 1. The setting of the vacuum assembly 17 can prevent the material from reacting with the air and improve the product quality. Then, the heated material is injected into the inside of the molding mold 1 through the injection hole 3. The reset spring 10 is compressed and the vacuum environment is formed inside the molding mold 1. The spring 10 is reset to drive the piston 13 to rise until the piston 13 is separated from the exhaust hole 7. The gas generated by the material can be discharged through the exhaust hole 7 and the circular hole 15 on the outside of the fixed cylinder 14. After the injection molding is completed, condensed water is introduced into the heat dissipation hole 2, so that the material can be quickly formed. After using the device for a period of time, material accumulates on the inside of the exhaust hole 7. Pressing the connecting plate 11 downward, the driving rod 12 can drive the piston 13 to move downward, the reset spring 10 is compressed, and the fixing rod 8 slides on the inside of the connecting plate 11. The rubber ring 16 can prevent external dust and impurities from entering the inside of the exhaust hole 7. The piston 13 can push the material inside the exhaust hole 7 into the inside of the molding mold 1, thereby preventing the exhaust hole 7 from being blocked. Finally, the connecting plate 11 is loosened, and the reset spring 10 is reset to drive the piston 13 to rise to the initial position, and the baffle 9 can prevent the fixing rod 8 from being separated from the connecting plate 11.

[0027] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding exhaust mechanism, comprising a molding mold (1), characterized in that: The molding die (1) has a heat dissipation hole (2) arranged horizontally and penetrating the molding die (1) from left to right, the molding die (1) has an injection hole (3) penetrating the molding die (1) on the rear side, the molding die (1) has a sealing groove (4) arranged on the front side, a sealing ring (5) is arranged inside the sealing groove (4), a pressing die (6) is fixedly connected to the side of the sealing ring (5) away from the molding die (1), the molding die (1) has an exhaust hole (7) arranged vertically and penetrating the molding die (1), and fixing rods (8) arranged vertically and fixedly connected to the top of the molding die (1) are symmetrically arranged on both sides of the exhaust hole (7), and the fixing rods (8) are arranged vertically and fixedly connected to the top of the molding die (1). (8) A baffle (9) is fixedly connected to the top end, a return spring (10) is provided on the outside of the fixed rod (8), a horizontally arranged connecting plate (11) is fixedly connected to the top end of the return spring (10), a vertically arranged driving rod (12) penetrating the connecting plate (11) is fixedly connected to the inside of the connecting plate (11), a piston (13) is fixedly connected to the bottom end of the driving rod (12), a fixed cylinder (14) is provided on the outside of the driving rod (12), a circular hole (15) penetrating the fixed cylinder (14) is provided on the outside of the fixed cylinder (14), a rubber ring (16) is fixedly connected to the top end of the fixed cylinder (14), and a vacuum pumping assembly (17) is provided above the connecting plate (11).

2. An injection molding exhaust mechanism according to claim 1, characterized in that: The vacuum pumping assembly (17) comprises a first air vent (1701) which is provided on the inner side of the driving rod (12) and passes through the driving rod (12) from top to bottom; a second air vent (1702) which passes through the piston (13) from top to bottom is provided on the inner side of the piston (13); a solenoid valve (1703) which passes through the first air vent (1701) is fixedly connected to the top end of the driving rod (12); a hose (1704) which passes through the solenoid valve (1703) is fixedly connected to the top end of the solenoid valve (1703); and a vacuum pump (1705) is fixedly connected to one end of the hose (1704) which is away from the solenoid valve (1703).

3. An injection molding exhaust mechanism according to claim 2, characterized in that: The first air hole (1701) and the second air hole (1702) have the same inner diameter, the first air hole (1701) and the second air hole (1702) are vertically aligned, and the vacuum pump (1705) is fixedly connected to the top of the molding die (1).

4. The injection molding exhaust mechanism according to claim 1, characterized in that: The inner side of the sealing groove (4) is tightly fitted with the outer side of the sealing ring (5), the inner side of the exhaust hole (7) is tightly fitted with the outer side of the piston (13), the fixing rod (8) passes through the baffle plate (9) and is connected to the baffle plate (9) in a sliding manner, and the bottom end of the return spring (10) is fixedly connected to the top end of the molding die (1).

5. The injection molding exhaust mechanism according to claim 1, characterized in that: The bottom end of the fixed cylinder (14) is fixedly connected to the top end of the molding die (1), the number of the circular holes (15) is multiple, the circular holes (15) are evenly distributed on the outside of the fixed cylinder (14), and the inside of the rubber ring (16) is tightly fitted to the outside of the driving rod (12).

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