Turbine cover injection mold

Abstract

The utility model provides a turbine cover injection mold, which relates to the technical field of turbine cover injection, and comprises a lower mold and an upper mold, the top end of the inner wall of the lower mold is fixedly connected with a limiting rod, one side of the outer wall of the lower mold is movably provided with a driving motor, both sides of the outer wall of the lower mold are movably provided with handles, the lower mold is internally provided with a movable seat, and the movable seat is fixedly connected with the upper mold. Limiting blocks are fixedly connected to the two sides of the movable seat correspondingly, a piston is made to move outwards by pulling a handle outwards, an air hole is made to be in a circulation state, air in a forming cavity can flow out through the air hole, and the situation that when a turbine cover is subjected to injection molding, gas exists in the forming cavity, and the product quality is affected is prevented; the driving motor drives the movable block to move to extrude the movable seat, so that the movable seat horizontally ascends, and the ejector pin and the ejector plate are matched together, so that the turbine cover can be demolded, stress is more uniform, and damage to the turbine cover due to the fact that the stress is concentrated at one point position is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine cover injection molding, in particular to a turbine cover injection molding mold. Background Art

[0002] A turbine is a rotary power machine that uses fluid to impact the impeller to generate mechanical power. The turbine cover is one of the key components of the turbine. Its main function is to form the working cavity of the turbine and guide the inlet and outlet fluids. It is also an external fixed base. The turbine cover is molded by injection molding.

[0003] During the injection molding process of the turbine cover, there is gas in the mold cavity of the injection mold due to the evaporation of air and moisture contained in the raw materials at high temperature. If these gases cannot be eliminated, it will cause defects such as damage to the appearance of the injection molded product, bubbles, and dimensional deviation. In addition, the injection mold often needs to be equipped with a mechanical ejector for demolding. When the turbine cover is demolded after injection molding, the ejector moves outward to eject the turbine cover from the inside of the mold. However, the ejection force is usually concentrated at one point. If the force is too concentrated, it is easy to cause the turbine cover to be dented and deformed, affecting the product quality. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that during the injection molding process of the turbine cover, the presence of gas in the mold cavity of the injection mold may cause defects in the injection molded product. In addition, the injection mold often needs to be provided with a mechanical ejector for demoulding. When the turbine cover is completed and needs to be demoulded, the ejector moves outward to eject the turbine cover from the inside of the mold. However, the ejection force is usually concentrated at one point. If the force is too concentrated, the turbine cover may be easily concave and deformed, thereby affecting the product quality. Therefore, a turbine cover injection mold is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a turbine cover injection mold, comprising a lower mold and an upper mold, a molding cavity is opened on the top of the lower mold, a ventilation hole is opened on one side of the inner wall of the molding cavity, a groove is opened on the inner wall of the ventilation hole, the interior of the lower mold is a hollow structure, a limiting rod is fixedly connected to the top end of the inner wall of the lower mold, a driving motor is movably installed on one side of the outer wall of the lower mold, handles are movably installed on both sides of the outer wall of the lower mold, a movable seat is provided inside the lower mold, and limiting blocks are fixedly connected on both sides of the movable seat.

[0006] Preferably, one end of the handle is fixedly connected to a pull rod, one side of the pull rod is fixedly connected to a mounting plate, the other side of the mounting plate is fixedly connected to a piston, and the shape of the piston matches the shape of one end of the air vent.

[0007] Preferably, a guide rod is fixedly mounted on the inner wall of the groove, a spring 1 is provided on the surface of the guide rod, the surface of the guide rod is slidably connected to the inner wall of the mounting plate, and one end of the spring 1 is tightly fitted to one side of the outer wall of the mounting plate.

[0008] Preferably, a connecting rod is movably mounted at one end of the driving motor, one side of the connecting rod is fixedly connected to screw rod 1, the other side of screw rod 1 is fixedly connected to screw rod 2, and the other side of screw rod 2 is movably connected to the inner wall of the lower mold.

[0009] Preferably, the screw rod 1 and the screw rod 2 have the same structure but opposite directions, and the surfaces of the screw rod 1 and the screw rod 2 are both rotatably connected with movable blocks, and the top of the movable block is an inclined structure.

[0010] Preferably, the bottom of the movable seat matches the top shape of the movable block, and the inner wall of the limit block is slidably connected to the surface of the limit rod.

[0011] Preferably, a ejector pin and an ejector plate are fixedly connected to the top of the movable seat respectively, a second spring is provided on the surface of the ejector pin, a third spring is provided on the surface of the ejector plate, the top end of the ejector pin is located at the center of the molding cavity, and the top end of the ejector plate is located at the corner of the molding cavity.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, a vent is provided inside the molding cavity. Under normal circumstances, the vent is tightly sealed by a piston. By pulling the handle outward to move the piston outward, the vent is in a flow state, so that the air inside the molding cavity can flow out through the vent, thereby preventing the presence of gas inside the molding cavity during injection molding of the turbine cover from affecting the product quality. The spring 1 arranged on the surface of the guide rod can make the piston seal at one end of the vent.

[0014] 2. In the utility model, an ejector pin and an ejector plate are installed on the top of the movable seat, the ejector plate is located at the center of the molding cavity, and the ejector plate is located at the corner of the molding cavity. The movable block is driven by a driving motor to move and squeeze the movable seat, so that the movable seat rises horizontally. The cooperation of the ejector pin and the ejector plate can make the turbine cover demouldable and the force more uniform, avoiding the force concentrated at one point to cause damage to the turbine cover. The second spring and the third spring can move the ejector pin and the ejector plate back to their original positions. The limit block is installed on the surface of the limit rod to make the movable seat suspended on the top of the movable block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a main body three-dimensional structure schematic diagram of a turbine cover injection mold;

[0016] Figure 2The utility model provides a schematic diagram of the cross-sectional structure of a lower mold of a turbine cover injection mold;

[0017] Figure 3 This is an enlarged schematic diagram of the structure at position A of a turbine cover injection mold proposed by the utility model;

[0018] Figure 4 This is an enlarged schematic diagram of the structure at position B of a turbine cover injection mold proposed by the utility model;

[0019] Figure 5 The utility model provides a schematic diagram of the three-dimensional structure of a piston of a turbine cover injection mold.

[0020] Legend: 1. Lower die; 101. Molding cavity; 102. Air vent; 103. Groove; 11. Limit rod; 12. Guide rod; 121. Spring one; 2. Upper die; 3. Drive motor; 31. Connecting rod; 32. Screw one; 321. Screw two; 33. Movable block; 4. Handle; 41. Pull rod; 42. Mounting plate; 43. Piston; 5. Movable seat; 51. Limit block; 52. Ejector pin; 521. Spring two; 53. Ejector plate; 531. Spring three. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Example 1

[0023] like Figure 1-Figure 5As shown, the utility model provides a technical solution: a turbine cover injection mold, including a lower mold 1 and an upper mold 2, a molding cavity 101 is provided on the top of the lower mold 1, a vent hole 102 is provided on one side of the inner wall of the molding cavity 101, a groove 103 is provided on the inner wall of the vent hole 102, the interior of the lower mold 1 is a hollow structure, a limiting rod 11 is fixedly connected to the top of the inner wall of the lower mold 1, a driving motor 3 is movably installed on one side of the outer wall of the lower mold 1, handles 4 are movably installed on both sides of the outer wall of the lower mold 1, and a movable seat 5 is provided inside the lower mold 1. Both sides of the movable seat 5 are fixedly connected to the limiting blocks 51, one end of the handle 4 is fixedly connected to the pull rod 41, one side of the pull rod 41 is fixedly connected to the mounting plate 42, the other side of the mounting plate 42 is fixedly connected to the piston 43, the shape of the piston 43 matches the shape of one end of the air vent 102, a guide rod 12 is fixedly installed on the inner wall of the groove 103, a spring 121 is provided on the surface of the guide rod 12, the surface of the guide rod 12 is slidably connected to the inner wall of the mounting plate 42, and one end of the spring 121 is tightly fitted to one side of the outer wall of the mounting plate 42.

[0024] In this embodiment, one side of the piston 43 is connected to one side of the mounting plate 42, and the piston 43 is located at one end of the air vent 102 through the thrust of the spring 121, so that the air vent 102 is in a sealed state. When the turbine cover is injected and the molding cavity 101 contains air, the handle 4 is pulled outward to drive the pull rod 41 to move outward, and at the same time, the mounting plate 42 and the piston 43 are moved outward. The mounting plate 42 moves on the surface of the guide rod 12 to squeeze the spring 121, so that the piston 43 is located at the top of the groove 103, and the gas inside the molding cavity 101 flows to the groove 103 through the air vent 102, and flows out through the groove 103, so that the gas inside the molding cavity 101 is discharged conveniently. Example 2

[0025] like Figure 1-Figure 5 As shown, a connecting rod 31 is movably installed at one end of the driving motor 3, a screw 1 32 is fixedly connected to one side of the connecting rod 31, a screw 2 321 is fixedly connected to the other side of the screw 1 32, the other side of the screw 2 321 is movably connected to the inner wall of the lower mold 1, the screw 1 32 and the screw 2 321 have the same structure but opposite directions, the surfaces of the screw 1 32 and the screw 2 321 are rotatably connected with a movable block 33, the top of the movable block 33 is an inclined structure, the bottom of the movable seat 5 is matched with the top shape of the movable block 33, the inner wall of the limit block 51 is slidably connected to the surface of the limit rod 11, the top of the movable seat 5 is respectively fixedly connected with an ejector pin 52 and an ejector plate 53, the surface of the ejector pin 52 is provided with a spring 2 521, the surface of the ejector plate 53 is provided with a spring 3 531, the top of the ejector pin 52 is located at the center of the molding cavity 101, and the top of the ejector plate 53 is located at the corner of the molding cavity 101.

[0026] In this embodiment, the turbine cover is injection molded by the cooperation of the lower mold 1 and the upper mold 2. When the turbine cover needs to be demolded, the connecting rod 31 is driven to rotate by the driving motor 3, and the connecting rod 31 drives the screw 1 32 and the screw 2 321 to rotate together, so that the movable block 33 moves on the surface of the screw 1 32, and the movable block 33 moves toward one end of the movable seat 5. The top of the movable block 33 contacts the bottom of the movable seat 5, and the movable seat 5 is lifted up, so that the ejector pin 52 and the ejector plate 53 on the top of the movable seat 5 move vertically upward at the same time, and the turbine cover inside the molding cavity 101 is ejected outward, so that the turbine cover is more evenly stressed, and the movable seat 5 squeezes the spring 2 521 and the spring 3 531 while rising, so that when the movable block 33 moves back, the movable seat 5 can drive the ejector pin 52 and the ejector plate 53 to reset, so as to facilitate the next injection molding operation.

[0027] The working principle of this embodiment is as follows: the turbine cover is injection molded by the cooperation of the lower mold 1 and the upper mold 2. When there is air inside the molding cavity 101, the pull rod 41 is driven outward by pulling the handle 4 outward, and the mounting plate 42 and the piston 43 are moved outward at the same time, so that the piston 43 is located at the top of the groove 103, and the gas inside the molding cavity 101 flows to the groove 103 through the air vent 102 and flows outward, so that the gas inside the molding cavity 101 is discharged. When the turbine cover needs to be demoulded, the screw 1 32 and the screw 2 321 are driven by the driving motor 3 to rotate, so that the movable block 33 moves on the surface of the screw 1 32, and the movable block 33 moves toward one end of the movable seat 5 to lift the movable seat 5 upward. The ejector pin 52 and the ejector plate 53 on the top of the movable seat 5 move vertically upward at the same time to eject the turbine cover inside the molding cavity 101 outward, so that the force on the turbine cover is more uniform, and it is avoided that the force is concentrated at one point during demoulding to damage the turbine cover.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A turbine cover injection mold, comprising a lower mold (1) and an upper mold (2), characterized in that: A molding cavity (101) is provided at the top of the lower mold (1), a ventilation hole (102) is provided on one side of the inner wall of the molding cavity (101), a groove (103) is provided on the inner wall of the ventilation hole (102), the interior of the lower mold (1) is a hollow structure, a limiting rod (11) is fixedly connected to the top of the inner wall of the lower mold (1), a driving motor (3) is movably mounted on one side of the outer wall of the lower mold (1), handles (4) are movably mounted on both sides of the outer wall of the lower mold (1), a movable seat (5) is provided inside the lower mold (1), and both sides of the movable seat (5) are fixedly connected to limiting blocks (51).

2. The turbine cover injection mold according to claim 1, characterized in that: One end of the handle (4) is fixedly connected to a pull rod (41), one side of the pull rod (41) is fixedly connected to a mounting plate (42), and the other side of the mounting plate (42) is fixedly connected to a piston (43), and the shape of the piston (43) matches the shape of one end of the air vent (102).

3. The turbine cover injection mold according to claim 1, characterized in that: A guide rod (12) is fixedly mounted on the inner wall of the groove (103), a spring (121) is provided on the surface of the guide rod (12), the surface of the guide rod (12) is slidably connected to the inner wall of the mounting plate (42), and one end of the spring (121) is tightly fitted to one side of the outer wall of the mounting plate (42).

4. The turbine cover injection mold according to claim 1, characterized in that: A connecting rod (31) is movably mounted on one end of the driving motor (3); a first screw rod (32) is fixedly connected to one side of the connecting rod (31); a second screw rod (321) is fixedly connected to the other side of the first screw rod (32); and the other side of the second screw rod (321) is movably connected to the inner wall of the lower mold (1).

5. The turbine cover injection mold according to claim 4, characterized in that: The screw rod 1 (32) and the screw rod 2 (321) have the same structure but opposite directions. The surfaces of the screw rod 1 (32) and the screw rod 2 (321) are both rotatably connected with a movable block (33), and the top of the movable block (33) is an inclined structure.

6. The turbine cover injection mold according to claim 1, characterized in that: The bottom of the movable seat (5) matches the shape of the top of the movable block (33), and the inner wall of the limit block (51) is slidably connected to the surface of the limit rod (11).

7. The turbine cover injection mold according to claim 1, characterized in that: The top of the movable seat (5) is respectively fixedly connected with an ejector pin (52) and an ejector plate (53); a second spring (521) is provided on the surface of the ejector pin (52); a third spring (531) is provided on the surface of the ejector plate (53); the top end of the ejector pin (52) is located at the center of the molding cavity (101); and the top end of the ejector plate (53) is located at a corner of the molding cavity (101).

Images