A demolding and taking-out jig for small annular plastic products

Abstract

The utility model discloses a kind of small annular plastic product stripping take-out jigs for, applied in stripping jig technical field;Including base, the side screw thread connection of base has air nozzle valve, the side screw thread connection of base away from air nozzle valve has blowing pipe, the side of base close to blowing pipe is equipped with the communication hole of same blowing pipe intercommunication is opened.Through rotating blowing pipe horizontal one-to-one insertion to inside small annular plastic part, simultaneously by opening air nozzle valve, make airflow from inside jetting out of jet orifice and produce certain impact force, to blow small annular plastic part and hang in the surface of blowing pipe and fall off. After all falling off, mechanical hand moves to the collection bag at one side and rotates, make blowing pipe change from horizontal to vertical, when small annular plastic part can be free fall to collection bag by gravity effect, to realize the safe take-out of small annular plastic product, improve the qualified rate of plastic product.

Description

Technical Field

[0001] This utility model belongs to the field of demolding fixture technology, and specifically relates to a demolding fixture for small circular plastic products. Background Technology

[0002] In the mass production of plastic products, molds are usually used to reduce costs, so demolding fixtures are needed to demold the plastic products.

[0003] Currently, Chinese utility model patent CN210011274U discloses a multifunctional removal fixture for plastic products. In existing mold manufacturing, automation is often implemented to reduce labor costs and improve production efficiency, with robotic arms typically used to remove plastic products. However, when using robotic arms to remove small, ring-shaped products, due to their small size and thin walls, insufficient clamping force after ejection can lead to unstable gripping and easy detachment. Excessive force can cause deformation of some plastic products, thus reducing the product yield. Utility Model Content

[0004] The purpose of this utility model is to provide a demolding fixture for small, circular plastic products. Its advantage is that by controlling the airflow to blow out from one end of the air blowing pipe, the small, circular plastic product ejected from the mold is detached under the influence of airflow and suspended on the air blowing pipe for collection, thereby allowing the plastic product to be safely removed.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a jig for demolding and removing small annular plastic products, comprising a base, an air valve threadedly connected to one side of the base, an air blowing pipe threadedly connected to the side of the base away from the air valve, a connecting hole communicating with the air blowing pipe on the side of the base near the air blowing pipe, a small annular plastic part sleeved on the surface of the air blowing pipe, an air jet hole on the end of the surface of the air blowing pipe away from the base, and an air inlet groove communicating with the air valve and the connecting hole respectively inside the base.

[0006] The above technical solution involves horizontally inserting a rotating air tube one-to-one into the interior of a small, ring-shaped plastic part. Simultaneously, by opening the air nozzle valve, airflow is ejected from the air jet, generating a certain impact force to detach the small, ring-shaped plastic parts and suspend them on the surface of the air tube. Once all parts have detached, a robotic arm moves to a collection bag and rotates, changing the air tube from horizontal to vertical. At this point, the small, ring-shaped plastic parts can fall freely into the collection bag under gravity, thus safely removing the small, ring-shaped plastic products and improving the product qualification rate.

[0007] The present invention is further configured such that the inside of the air blowing pipe is provided with a flared groove and a narrow groove that are interconnected. The flared groove is located at the end of the air blowing pipe near the base and is connected to the connecting hole. The narrow groove is located at the end of the air blowing pipe away from the base and is connected to the air jet hole.

[0008] The above technical solution is adopted: when the airflow flows through the flared groove into the narrow groove, the inner diameter is reduced, which will accelerate the airflow speed. This will generate a certain impact force when the airflow is ejected from the inside of the jet hole, ensuring that the small ring-shaped plastic parts can be stably detached.

[0009] The present invention is further configured such that the surface of the air blowing tube is a conical structure with a smaller outer diameter at the end near the base and a larger outer diameter at the end away from the base.

[0010] The above technical solution works as follows: When gas blows through the small, ring-shaped plastic part, the part detaches and hangs on the surface of the air blowing pipe, sliding inward a certain distance. Since the outer diameter of the air blowing pipe surface is smaller at the end closer to the base, the small ring-shaped plastic part can slide a longer distance due to gravity. This allows the small ring-shaped plastic part to hang more closely on the air blowing pipe surface, closer to the base, reducing the risk of it detaching from the air blowing pipe surface even when the air valve is not kept open during robotic arm movement.

[0011] The present invention is further provided that the base has a mounting screw hole on the side away from the air blowing pipe.

[0012] The above technical solution is used to mount the base onto the robotic arm using bolts.

[0013] The present invention is further configured such that the end of the air nozzle valve away from the base is threadedly connected to the air pipe at the output end of the air pump.

[0014] The above technical solution allows air to be injected into multiple air tubes by turning on the air pump and opening the air nozzle valve.

[0015] The present invention is further configured such that a mold seat is provided on the side of the base near the air blowing pipe, and a mold groove is provided inside the mold seat. The mold seat is slidably connected to a pneumatic push rod that works with a small circular plastic part inside the mold groove.

[0016] The above technical solution is adopted: after the small annular plastic part is cooled and formed inside the mold groove, the front and rear molds of the mold base are opened, so that the small annular plastic part can be ejected from the inside of the mold groove by the pneumatic ejector rod.

[0017] In summary, this utility model has the following beneficial effects: The air blowing tube is horizontally inserted one-to-one into the interior of small, ring-shaped plastic parts by rotating it. Simultaneously, the air valve is opened, causing airflow to be ejected from the nozzle, creating an impact force that detaches the small ring-shaped plastic parts and suspends them on the surface of the air blowing tube. Once all parts have detached, the robotic arm moves to a collection bag and rotates, changing the air blowing tube from horizontal to vertical. At this point, the small ring-shaped plastic parts can fall freely into the collection bag under gravity, thus safely removing the small ring-shaped plastic products and improving the product qualification rate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural cross-sectional view of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the air blowing pipe structure of this utility model.

[0019] Reference numerals: 1. Base; 2. Air valve; 3. Air pipe; 4. Small circular plastic part; 5. Air inlet groove; 6. Connecting hole; 7. Flared groove; 8. Air jet hole; 9. Narrow groove; 10. Mounting screw hole; 11. Mold base; 12. Mold groove; 13. Pneumatic ejector rod. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Example 1: refer to Figure 1 , Figure 2 , Figure 3 , Figure 4A demolding fixture for small, annular plastic products includes a base 1. An air valve 2 is threaded onto one side of the base 1, and an air pipe 3 is threaded onto the side of the base 1 away from the air valve 2. A connecting hole 6 is provided on the side of the base 1 near the air pipe 3, communicating with the air pipe 3. A small, annular plastic part 4 is fitted onto the surface of the air pipe 3. An air jet hole 8 is provided at the end of the air pipe 3 away from the base 1. An air inlet groove 5 is provided inside the base 1, communicating with both the air valve 2 and the connecting hole 6. By rotating the air pipe 3 horizontally, it is inserted one-to-one into the small, annular plastic part 4. Simultaneously, by opening the air valve 2, airflow is ejected from the air jet hole 8, generating a certain impact force to blow the small, annular plastic part 4 off and suspend it on the surface of the air pipe 3. After all parts have detached, the robotic arm moves to the collection bag and rotates, causing the air pipe 3 to change from horizontal to vertical. At this point, the small circular plastic parts 4 can fall freely into the collection bag under the action of gravity, thereby achieving the safe removal of small circular plastic products and improving the pass rate of plastic products.

[0022] refer to Figure 2 , Figure 4 The air blowing pipe 3 has an interconnected flared groove 7 and a narrow groove 9 inside. The flared groove 7 is located inside the air blowing pipe 3 near the base 1 and is connected to the connecting hole 6. The narrow groove 9 is located inside the air blowing pipe 3 away from the base 1 and is connected to the jet hole 8. When the airflow flows through the flared groove 7 into the narrow groove 9, the inner diameter is reduced, which accelerates the airflow speed. This causes the airflow to be ejected from the inside of the jet hole 8, generating a certain impact force to ensure that the small annular plastic part 4 can be stably detached.

[0023] refer to Figure 4 The surface of the air blowing pipe 3 has a conical structure with a smaller outer diameter at the end near the base 1 and a larger outer diameter at the end away from the base 1. When gas blows through the small annular plastic part 4, the small annular plastic part 4 will detach and hang on the surface of the air blowing pipe 3, sliding inward a certain distance. The smaller outer diameter at the end of the air blowing pipe 3 near the base 1 allows the small annular plastic part 4 to slide a longer distance under gravity. This allows the small annular plastic part 4 to hang on the surface of the air blowing pipe 3 closer to the base 1, reducing the risk of the small annular plastic part 4 detaching from the surface of the air blowing pipe 3 even when the air valve 2 is not kept open during the movement of the robotic arm.

[0024] refer to Figure 1 , Figure 3 The base 1 has a mounting screw hole 10 on the side away from the air pipe 3. This is used to mount the base 1 onto the robot arm using bolts.

[0025] refer to Figure 1 , Figure 2The end of the air valve 2 furthest from the base 1 is threadedly connected to the air pipe at the output end of the air pump. By turning on the air pump and opening the air valve 2, air can be injected into the multiple air pipes 3.

[0026] refer to Figure 1 A mold base 11 is provided on the side of the base 1 near the air pipe 3. A mold groove 12 is opened inside the mold base 11. The mold base 11 is slidably connected to a pneumatic ejector rod 13 that works with a small annular plastic part 4 inside the mold groove 12. After the small annular plastic part 4 is cooled and formed inside the mold groove 12, the front and rear molds of the mold base 11 are opened, so that the small annular plastic part 4 can be ejected from the inside of the mold groove 12 by the pneumatic ejector rod 13.

[0027] Brief description of the usage process: First, bolt the base 1 to the robotic arm. After the small annular plastic part 4 has cooled and solidified inside the mold groove 12, open the front and rear molds of the mold base 11. The small annular plastic part 4 is then ejected from the mold groove 12 by the pneumatic ejector rod 13. Then, control the robotic arm to move the base 1 to one side of the mold groove 12. After rotation, the air blowing pipes 3 are horizontally inserted one-to-one into the small annular plastic parts 4. At the same time, by opening the air nozzle valve 2, the air pumped in by the air pump flows evenly inside the base 1 through the air inlet groove 5, so that the airflow can enter the interior of each air blowing pipe 3 through the connecting hole 6. When the airflow flows through the flared groove 7 into the narrow groove 9, the airflow speed will be accelerated due to the narrowing of the inner diameter, so that the airflow is ejected from the inside of the air jet hole 8 to generate a certain impact force, which is used to blow the small annular plastic part 4 off and hang it on the surface of the air blowing pipe 3. Once all the small circular plastic parts 4 have detached, move the robotic arm to the collection bag on the side. At this time, close the air valve 2 and stop blowing air. Then, the robotic arm drives the base 1 to rotate, so that the air blowing pipe 3 changes from horizontal to vertical. At this time, the small circular plastic parts 4 can fall freely into the collection bag under the action of gravity, thereby realizing the safe removal of the small circular plastic products.

[0028] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A demolding fixture for small, annular plastic products, comprising a base (1), characterized in that: A nozzle valve (2) is threadedly connected to one side of the base (1), and an air blowing pipe (3) is threadedly connected to the side of the base (1) away from the nozzle valve (2). A connecting hole (6) communicating with the air blowing pipe (3) is opened on the side of the base (1) near the air blowing pipe (3). A small circular plastic part (4) is fitted on the surface of the air blowing pipe (3). An air jet hole (8) is opened at the end of the surface of the air blowing pipe (3) away from the base (1). An air inlet groove (5) communicating with the nozzle valve (2) and the connecting hole (6) is opened inside the base (1).

2. The demolding fixture for small, annular plastic products according to claim 1, characterized in that: The air blowing pipe (3) has an interconnected flared groove (7) and a narrow groove (9) inside. The flared groove (7) is located inside the air blowing pipe (3) at one end near the base (1) and is connected to the connecting hole (6). The narrow groove (9) is located inside the air blowing pipe (3) at one end away from the base (1) and is connected to the jet hole (8).

3. The demolding fixture for small, annular plastic products according to claim 1, characterized in that: The surface of the air pipe (3) is a conical structure with a small outer diameter at the end near the base (1) and a large outer diameter at the end away from the base (1).

4. A demolding fixture for small, circular plastic products according to claim 1, characterized in that: The base (1) has a mounting screw hole (10) on the side away from the air pipe (3).

5. A demolding fixture for small, annular plastic products according to claim 1, characterized in that: The end of the air valve (2) away from the base (1) is threadedly connected to the air pipe at the output end of the air pump.

6. A demolding fixture for small, annular plastic products according to claim 1, characterized in that: The base (1) is provided with a mold seat (11) on the side near the air pipe (3). The mold seat (11) has a mold groove (12) inside. The mold seat (11) is slidably connected to a pneumatic push rod (13) that works with a small circular plastic part (4) inside the mold groove (12).

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