Anti-pinch product secondary ejection structure

Abstract

The utility model relates to the technical field of dies, and discloses an anti-pinch product secondary ejection structure which comprises a lower die and a die cavity formed in the top of the lower die, a base is fixedly installed on the bottom face of the lower die, an ejection frame is movably arranged in the die cavity of the lower die, an ejection plate is movably arranged in the ejection frame, and the ejection plate is fixedly installed on the base. Two first ejector rods are symmetrically arranged on the bottom face of the lower die and longitudinally penetrate into the base in a sliding mode, and two second ejector rods are symmetrically arranged on the bottom face of the ejector plate and longitudinally penetrate into the base in a sliding mode. According to the secondary ejection structure for the anti-pinch product, it can be guaranteed that the anti-pinch product subjected to injection molding is demolded in a secondary ejection mode, the problems that due to traditional single ejection, product ejection is not thorough, accessories are prone to being damaged and the like are effectively solved, the production efficiency and the product percent of pass are improved, and the production quality of the anti-pinch product is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a secondary ejection structure for anti-pinch products. Background Technology

[0002] In modern industrial production, anti-pinch products are widely used in automobiles, electronic equipment, and many other fields. Their performance and quality directly affect the safety and reliability of the products. During the manufacturing process of anti-pinch products, the ejection structure, as a crucial link after mold forming, plays a vital role in smoothly ejecting the injection-molded product from the mold. However, existing ejection structures still have certain shortcomings, such as:

[0003] The patent application CN202421319487.5, entitled "An Ejection Structure for a Mold," uses a traditional single ejection method. Although this method can achieve ejection and demolding, the structure of anti-pinch products is often complex, and a single ejection may not be able to completely remove the product from the mold. This results in incomplete ejection, which can easily damage product components, affecting production efficiency and product qualification rate, and is not conducive to ensuring the production quality of anti-pinch products. Therefore, a two-stage ejection structure for anti-pinch products is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a secondary ejection structure for anti-pinch products, so as to solve the problem mentioned in the background art that the single ejection of the existing ejection structure can easily cause product damage, affecting the production efficiency and pass rate of anti-pinch products.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a secondary ejection structure for anti-pinch products, including a lower mold and a mold cavity on its top, a base fixedly installed on the bottom surface of the lower mold, an ejection frame movably disposed within the mold cavity of the lower mold, and an ejection plate movably disposed inside the ejection frame, two first ejector rods symmetrically disposed on the bottom surface of the lower mold, and the first ejector rods slide longitudinally through the interior of the base, and two second ejector rods symmetrically disposed on the bottom surface of the ejection plate, and the second ejector rods slide longitudinally through the interior of the base.

[0006] The above technical solution facilitates the production effect and quality of anti-pinch products through secondary ejection.

[0007] As a preferred embodiment of this utility model, an electric push rod is fixedly installed on the inner bottom surface of the base, and a lifting plate is fixedly installed on the output end of the electric push rod, and the top surface of the lifting plate is fixedly connected to the bottom end of the first push rod.

[0008] The above technical solution facilitates the electric push rod to drive the lifting plate to move up and down, thereby driving the first push rod to push the ejection frame to complete the first ejection.

[0009] As a preferred embodiment of this utility model, a connecting plate is fixedly installed at the bottom end of the second top rod, and the bottom surface of the connecting plate is in movable contact with the top surface of the lifting plate.

[0010] By adopting the above technical solution, it is convenient for the lifting plate to push the connecting plate, the second top rod, and the ejection plate upward when the lifting plate rises, so as to realize the second ejection.

[0011] As a preferred embodiment of this utility model, the lifting plate is longitudinally provided with a twisted sleeve through a bearing, the connecting plate is sleeved on the outside of the twisted sleeve, and the rotation of the twisted sleeve is used for the linear movement of the connecting plate. The inner wall surface of the twisted sleeve is provided with a vertical sliding groove and a spiral sliding groove, and the top of the spiral sliding groove is connected to the bottom of the vertical sliding groove. The vertical sliding groove and the spiral sliding groove are slidably connected to the sliding rod, and the sliding rod is fixedly installed on the surface of the fixed rod, and the fixed rod is fixedly installed on the bottom surface of the lower mold.

[0012] The above technical solution facilitates the sliding rod to slide in the vertical groove when the connecting plate rises synchronously with the lifting plate, ensuring the synchronous action of the ejection frame and the ejection plate during the first ejection. After the sliding rod slides into the spiral groove, the twisted sleeve rotates and drives the connecting plate to rise faster, so that the ejection plate ejects the product with a larger stroke, ensuring that the product is completely demolded.

[0013] As a preferred embodiment of this utility model, two springs are symmetrically installed on the top surface of the connecting plate, and the two springs are respectively sleeved on the outside of the two second push rods, and the top of the springs are fixedly connected to the bottom surface of the lower mold.

[0014] By adopting the above technical solution, the spring can play a buffering role during the ejection process, avoiding product surface indentation or mold wear caused by excessive impact force when the ejector plate is ejected. After ejection, the spring's restoring force can drive the ejector plate and connecting plate to fall back automatically, preparing for the next ejection.

[0015] As a preferred embodiment of this utility model, an electric telescopic rod is installed on the top surface of the lifting plate, and a locking block is fixedly installed at the output end of the electric telescopic rod, and the locking block is movably inserted into a slot formed on the surface of the connecting plate.

[0016] The above technical solution facilitates the insertion of the electric telescopic rod drive block into the slot, which can rigidly lock the lifting plate and the connecting plate, ensuring the stability of the anti-pinch product during injection molding production.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the secondary ejection structure of the anti-pinch product can ensure that the anti-pinch product after injection molding is demolded by secondary ejection, which effectively solves the problems of incomplete product ejection and easy damage to parts caused by traditional single ejection, improves production efficiency and product qualification rate, and ensures the production quality of anti-pinch products;

[0018] The lifting plate is driven to move upward by an electric push rod, and the ejection frame is driven to move upward by the first push rod. At the same time, the lifting plate pushes the connecting plate, the second top plate, and the ejection plate to move upward in sync, thereby completing the first ejection.

[0019] During the upward movement of the lifting plate, the spiral sleeve rises synchronously. Through the action of the sliding rod, the vertical slide groove and the spiral slide groove, the spiral sleeve moves upward in a straight line first and then rotates. When the spiral sleeve rotates, the connecting plate drives the second push rod and the ejection plate to move upward at an accelerated speed, thereby realizing the second ejection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the present invention.

[0022] Figure 3 This is a schematic diagram of the connection structure between the first top rod, the top ejector frame, and the lifting plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the connection structure between the second push rod, the push plate, and the connecting plate of this utility model;

[0024] Figure 5 This is a schematic diagram of the connection structure between the vertical slide groove, the sliding rod, and the spiral slide groove of this utility model;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of the twisted sleeve of this utility model;

[0026] Figure 7 This is a schematic diagram of the connection structure between the electric telescopic rod and the locking block in Embodiment 2 of this utility model.

[0027] In the diagram: 1. Lower mold; 2. Base; 3. Ejector frame; 4. Ejector plate; 5. First ejector rod; 6. Second ejector rod; 7. Electric push rod; 8. Lifting plate; 9. Connecting plate; 10. Twisted sleeve; 11. Vertical slide groove; 12. Spiral slide groove; 13. Sliding rod; 14. Fixing rod; 15. Spring; 16. Bearing; 17. Electric telescopic rod; 18. Locking block; 19. Locking groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0029] Please see Figure 1 - Figure 6 The present invention provides a secondary ejection structure for an anti-pinch product, comprising a lower mold 1 and a mold cavity on its top. An upper mold adapted to the lower mold 1 is movably mounted on the top of the lower mold 1. A base 2 is fixedly mounted on the bottom surface of the lower mold 1. An ejection frame 3 is movably mounted inside the mold cavity of the lower mold 1, and an ejection plate 4 is movably mounted inside the ejection frame 3. The ejection plate 4 matches the structural dimensions of the ejection frame 3. Two first ejector rods 5 are symmetrically mounted on the bottom surface of the lower mold 1, and the first ejector rods 5 slide longitudinally through the interior of the base 2. Two second ejector rods 6 are symmetrically mounted on the bottom surface of the ejection plate 4, and the second ejector rods 6 slide longitudinally through the interior of the base 2.

[0030] An electric push rod 7 is fixedly installed on the inner bottom surface of the base 2, and a lifting plate 8 is fixedly installed on the output end of the electric push rod 7. The top surface of the lifting plate 8 is fixedly connected to the bottom end of the first push rod 5.

[0031] The bottom end of the second top rod 6 is fixedly installed with a connecting plate 9, and the bottom surface of the connecting plate 9 is in contact with the top surface of the lifting plate 8.

[0032] The lifting plate 8 is longitudinally connected to the spiral sleeve 10 through the bearing 16. The connecting plate 9 is sleeved on the outside of the spiral sleeve 10. The connecting plate 9 and the spiral sleeve 10 form a threaded connection structure. The rotation of the spiral sleeve 10 is used for the linear movement of the connecting plate 9. The inner wall surface of the spiral sleeve 10 is provided with a vertical slide groove 11 and a spiral slide groove 12. The top of the spiral slide groove 12 is connected to the bottom of the vertical slide groove 11. The vertical slide groove 11 and the spiral slide groove 12 are slidably connected to the sliding rod 13. The sliding rod 13 is fixedly installed on the surface of the fixed rod 14. The fixed rod 14 is fixedly installed on the bottom surface of the lower mold 1.

[0033] Two springs 15 are symmetrically installed on the top surface of the connecting plate 9, and the two springs 15 are respectively sleeved on the outside of the two second push rods 6, and the top of the springs 15 are fixedly connected to the bottom surface of the lower mold 1.

[0034] Working principle: When it is necessary to eject the injection-molded anti-pinch product, the electric push rod 7 is activated. Its output end pushes the lifting plate 8 to move upward. The lifting plate 8 drives the first push rod 5 to move upward, pushing the ejection frame 3 to move upward. When the lifting plate 8 rises, its top surface abuts against the bottom surface of the connecting plate 9 and pushes the connecting plate 9 to rise synchronously. The connecting plate 9 drives the second push rod 6 and the ejection plate 4 to move upward. The ejection frame 3 and the ejection plate 4 move upward synchronously to eject the injection-molded anti-pinch product, completing the first ejection.

[0035] When the lifting plate 8 moves upward, it drives the twist sleeve 10 to rise through the bearing 16. The sliding rod 13, which is fixed on the bottom fixing rod 14 of the lower mold 1, slides in the vertical groove 11 on the inner wall of the twist sleeve 10. When it slides to the bottom and enters the spiral groove 12, the twist sleeve 10 will rotate, causing the connecting plate 9 to move linearly and accelerate, so that the ejector plate 4 ejects the product with a larger stroke, realizing the second ejection.

[0036] During ejection, the spring 15 on the top surface of the connecting plate 9, which is fitted on the outside of the second push rod 6, acts as a buffer. After ejection, the electric push rod 7 drives the lifting plate 8 to return to its original position. Under the action of the spring 15's return force, the ejection plate 4 and the connecting plate 9 fall back for subsequent use. Example 2

[0037] Please see Figure 7 The difference between this embodiment and the first embodiment is that an electric telescopic rod 17 is installed on the top surface of the lifting plate 8, and a locking block 18 is fixedly installed at the output end of the electric telescopic rod 17, and the locking block 18 is movably inserted into the slot 19 opened on the surface of the connecting plate 9.

[0038] Working principle: During the injection molding process of the anti-pinch product, the electric telescopic rod 17 drives the locking block 18 to insert into the slot 19 of the connecting plate 9, which rigidly locks the lifting plate 8 and the connecting plate 9, thereby ensuring the stability of the structure and preventing the ejector plate 4 from fluctuating up and down due to external forces.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A secondary ejection structure for preventing product clamping, comprising a lower mold (1) with a mold cavity opened at the top, characterized in that: a base (2) is fixedly installed on the bottom surface of the lower mold (1), an ejection frame (3) is movably arranged in the mold cavity of the lower mold (1), an ejection plate (4) is movably arranged inside the ejection frame (3), two first ejection rods (5) are symmetrically arranged on the bottom surface of the lower mold (1) and longitudinally slide through the inside of the base (2), and two second ejection rods (6) are symmetrically arranged on the bottom surface of the ejection plate (4) and longitudinally slide through the inside of the base (2). An electric push rod (7) is fixedly installed on the inner bottom surface of the base (2), an elevating plate (8) is fixedly installed on the output end of the electric push rod (7), and the top surface of the elevating plate (8) is fixedly connected with the bottom end of the first ejection rod (5).

2. A secondary ejection structure for a pinch protection product according to claim 1, wherein The bottom end of the second ejection rod (6) is fixedly installed with a connecting plate (9), and the bottom surface of the connecting plate (9) movably abuts against the top surface of the elevating plate (8).

3. A secondary ejection structure for a pinch protection product according to claim 2, wherein The elevating plate (8) is longitudinally penetrated by a bearing (16) with a twisted sleeve (10), the connecting plate (9) is sleeved on the outside of the twisted sleeve (10), the rotation of the twisted sleeve (10) is used for linear movement of the connecting plate (9), a vertical sliding groove (11) and a spiral sliding groove (12) are formed on the inner wall surface of the twisted sleeve (10), the top of the spiral sliding groove (12) is communicated with the bottom of the vertical sliding groove (11), the vertical sliding groove (11) and the spiral sliding groove (12) are slidably connected with a sliding rod (13), the sliding rod (13) is fixedly installed on the surface of a fixed rod (14), and the fixed rod (14) is fixedly installed on the bottom surface of the lower mold (1).

4. The dual ejection structure of claim 3, wherein, Two springs (15) are symmetrically installed on the top surface of the connecting plate (9), the two springs (15) are respectively sleeved on the outside of the two second ejection rods (6), and the top end of the spring (15) is fixedly connected with the bottom surface of the lower mold (1).

5. The dual ejection structure of claim 3, wherein, An electric telescopic rod (17) is installed on the top surface of the elevating plate (8), a clamping block (18) is fixedly installed on the output end of the electric telescopic rod (17), and the clamping block (18) is movably inserted into a clamping groove (19) formed on the surface of the connecting plate (9).

6. The dual ejection structure of claim 3, wherein, ​

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