Injection mold ejection mechanism and injection mold

Abstract

An ejection mechanism of an injection mold comprises an ejector pin bottom plate; the lower end of the straight ejector pin is connected to the ejector pin bottom plate, a straight ejector head is arranged at the upper end of the straight ejector pin, the upper end of the straight ejector head is used for ejecting a product in the demolding direction, and an avoiding groove used for forming a product buckle is formed in the upper end of the straight ejector head; the inclined ejector pin and the straight ejector pin are arranged at a non-zero angle, the lower end of the inclined ejector pin can be adjusted in the transverse direction relative to the ejector pin bottom plate, an inclined ejector head is arranged at the upper end of the inclined ejector pin, the upper end of the inclined ejector head abuts against the straight ejector head and is in sliding fit with the straight ejector head, and the lower end of the inclined ejector head is used for forming a product fixing groove. Through a composite straight-ejection and inclined-ejection structure, movement in the vertical direction and movement in the horizontal direction are achieved at the same time, and therefore demolding of products designed to be integrated with corresponding three-proofing product type battery covers and battery assemblies is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of injection mold, in particular to an injection mold ejection mechanism and injection mold. BACKGROUND

[0002] Injection mold is a kind of mold widely used in plastic industry, mainly composed of gating system, guide system, forming system, cooling system and ejection mechanism, etc. For complex shape, cannot be directly ejected, then must be through core-pulling structure, or inclined top mechanism to eject the product. With the progress of mold processing technology, the appearance of the product is also more and more high. The product has reverse buckle, which needs to be designed with inclined top ejection. When the inclined top head is ejected, it needs to have enough horizontal moving distance to ensure the complete ejection of the side reverse buckle position. At this time, the product core side area at the position of the inclined top head is generally required to be designed with a flat area to provide enough movement space for the inclined top.

[0003] At present, the battery cover and battery assembly of the three-proofing product are designed as a whole, please refer to Figure 1 , including a top cover 11 and a cover body 12 arranged on the side of the top cover 11, and the cover body forms a product fixing groove 13 on any side reverse buckle, and a product buckle 14 is arranged on the inner wall of the product cover to be installed with the battery main body. The battery cover and battery assembly are designed as a whole, which can improve the strength in advance, and do not need to be waterproofed separately, reducing the waterproof test process.

[0004] The battery cover of the above product cannot be directly ejected because the inner wall area of the battery cover is not a flat area, and the conventional inclined top can only be ejected in one direction, which is interfered by the buckle in the direction of the inclined top movement. Utility model content

[0005] The present application provides an injection mold ejection mechanism and injection mold, which can realize the ejection of the battery cover and battery assembly of the three-proofing product designed as a whole.

[0006] According to one aspect of the present application, an injection mold ejection mechanism is provided in an embodiment, comprising:

[0007] A needle bottom plate;

[0008] A straight needle, the lower end of the straight needle is connected to the needle bottom plate, the upper end of the straight needle is provided with a straight top, the upper end of the straight top is used to eject the product in the demolding direction, and the upper end of the straight top is provided with an avoidance groove for forming a product buckle;

[0009] An inclined needle, which is arranged at a non-zero angle with the straight needle, the lower end of the inclined needle is adjustable in the transverse direction relative to the needle bottom plate, the upper end of the inclined needle is provided with an inclined top, the upper end of the inclined top abuts against the straight top and is in sliding fit with the straight top, and the lower end of the inclined top is used to form a product fixing groove.

[0010] In another embodiment, the inclined ejector pin is gradually closer to the straight ejector pin from bottom to top.

[0011] In another embodiment, a lateral movement gap is provided between the inclined ejector head and the straight ejector head for lateral movement of the inclined ejector head.

[0012] In another embodiment, a lateral guide rail is provided at the upper end of the inclined ejector seat, and a lateral guide groove is provided at the lower end of the inclined ejector pin to cooperate with the lateral guide rail.

[0013] In another embodiment, the upper end of the inclined ejector head is recessed to form an embedding groove for the straight ejector head, and the embedding groove is provided with through holes at its two lateral ends to enable lateral movement of the inclined ejector head along the straight ejector head.

[0014] In another embodiment, the upper end of the inclined ejector head is flush with the upper end of the straight ejector head to form an inner wall of the product.

[0015] In another embodiment, a guide seat is further provided, which is arranged in parallel with the ejector pin base plate, and the inclined ejector pin passes through the guide seat and is slidably connected with the guide seat in the length direction.

[0016] In another embodiment, the guide seat has a guide column vertically passing through the guide seat, which is fixed opposite to the ejector pin base plate, and the guide column is parallel to the straight ejector pin.

[0017] In another embodiment, the guide seat is recessed on one side to form a limiting groove, and the straight ejector pin is arranged by being clamped into the limiting groove.

[0018] According to another aspect of the present application, an injection mold is provided in an embodiment, which realizes demolding by using the above-mentioned injection mold ejection mechanism.

[0019] According to the injection mold ejection mechanism and the injection mold of the above-mentioned embodiments, when the inclined ejector head region is not flat and cannot realize composite direction movement for corresponding products, the straight ejector head and the inclined ejector head are provided in combination, the inclined ejector head pushes against the straight ejector head, and under the pushing of the ejector pin base plate during ejection, the straight ejector rod and the inclined ejector rod move synchronously, the inclined ejector head moves laterally, the straight ejector head provides a corresponding flat area for the inclined ejector head to move laterally away from the product fixing groove, and space is provided for vertical movement of the straight ejector head, thereby realizing side reverse demolding and ejection of the current three-proofing battery cover and battery assembly integrated product, and improving the injection molding production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a product diagram of the existing three-proofing battery cover and battery assembly integrated structure.

[0021] Figure 2 This is a schematic diagram of the overall cross-sectional structure of an injection mold in one embodiment;

[0022] Figure 3 for Figure 2 Enlarged view of section A;

[0023] Figure 4 This is a schematic diagram of the overall structure of the injection mold ejection mechanism in one embodiment;

[0024] Figure 5 This is an exploded structural diagram of the ejection mechanism of an injection mold in one embodiment;

[0025] Figure 6 This is a partial structural diagram of a straight mandrel and an angled mandrel in one embodiment;

[0026] Reference numerals: 1. Battery cover; 11. Top cover; 12. Cover body; 13. Product fixing groove; 14. Product buckle; 2. Mold blank; 21. Panel; 22. Sprue plate; 23. A plate; 24. B plate; 25. Ejector pin panel; 26. Ejector pin base plate; 27. Base plate; 28. Guide post; 29. ​​Guide sleeve; 3. Mold core; 31. Front mold core; 32. Rear mold core; 4. Ejection mechanism; 41. Straight ejector pin; 42. Straight ejector head; 421. Clearance groove; 43. Angled ejector pin; 431. Lateral guide groove; 44. Angled ejector head; 441. Insert groove; 45. Angled ejector seat; 451. Lateral guide rail; 46. Lateral movement clearance; 47. Guide seat; 48. Guide post. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0028] In addition, the features described in the specification, operations or characteristics can be combined in any appropriate manner to form various embodiments, and the steps involved in each embodiment can be sequentially adjusted or adjusted in a manner that can be easily apparent to those skilled in the art. Therefore, the description and drawings are only for the purpose of clearly describing one embodiment, and do not mean the necessary composition and / or order.

[0029] The serial numbers of the components described herein, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequential or technical meaning. The "connection" and "coupling" in the present application include direct and indirect connections (couplings) unless otherwise specified.

[0030] The injection mold is a widely used mold in the plastics industry, mainly composed of a gating system, a guide system, a forming system, a cooling system and an ejection mechanism, etc. For complex shapes that cannot be directly ejected, core pulling structure or inclined ejection mechanism must be used to eject the product. With the progress of mold processing technology, the appearance of the product is also increasingly demanding. When the product has a reverse buckle and needs to be designed with an inclined ejection mechanism, the inclined ejection head needs to have enough horizontal movement distance to ensure the complete release of the side reverse buckle position. At this time, it is generally required that the product core side area at the position of the inclined ejection head be designed with a flat area to provide enough movement space for the inclined ejection.

[0031] Currently, the battery cover and battery assembly of the three-proofing product are designed as a whole, please refer to Figure 1 , which includes a top cover 11 and a cover body 12 arranged on the side of the top cover 11. The battery cover 1 corresponding to the present embodiment has a product fixing groove 13 formed by the reverse buckle on any side of the cover body 12, and a product buckle 14 arranged on the inner wall of the top cover 11 on the same side, which is used for installation with the battery body. The other side of the cover body 12 is arranged as a normal reverse buckle structure. However, the inner wall area of the battery cover 1 of this product is not a flat area, and the conventional inclined ejection can only be demolded in one direction, which is interfered by the buckle in the direction of the inclined ejection, and cannot be directly ejected.

[0032] The present application provides an injection mold ejection mechanism and an injection mold, which realizes the movement in the vertical direction and the horizontal direction by the combined straight ejection and inclined ejection structure, thereby realizing the demolding of the battery cover and battery assembly of the three-proofing product designed as a whole product.

[0033] According to one aspect of the present application, an injection mold ejection mechanism is provided in one embodiment, please refer to Figure 1 , Figure 2 and Figure 3, including: the ejector pin base plate 26; the straight ejector pin 41, the lower end of the straight ejector pin 41 is connected to the ejector pin base plate 26, the upper end of the straight ejector pin 41 is provided with a straight ejector head 42, the upper end of the straight ejector head 42 is used to eject the product in the demolding direction, and the upper end of the straight ejector head 42 is provided with an avoidance groove 421 for forming the product buckle 14; the inclined ejector pin 43 is arranged at a non-zero angle with the straight ejector pin 41, the lower end of the inclined ejector pin 43 is adjustable in the transverse direction relative to the ejector pin base plate 26, the upper end of the inclined ejector pin 43 is provided with an inclined ejector head 44, the upper end of the inclined ejector head 44 abuts against the straight ejector head 42 and is in sliding fit with the straight ejector head 42, and the lower end of the inclined ejector head 44 is used to form the product fixing groove 13.

[0034] According to the injection mold ejecting mechanism and the injection mold of the above-mentioned embodiment, when the inclined ejector head 44 part area is not flat and cannot realize the movement in the composite direction for the corresponding product, the straight ejector head 42 and the inclined ejector head 44 are combinedly arranged, the inclined ejector head 44 pushes against the straight ejector head 42, under the pushing of the ejector pin base plate 26, the straight ejector rod and the inclined ejector rod move synchronously, the inclined ejector head 44 moves in the transverse direction, the straight ejector head 42 provides a corresponding flat area for the inclined ejector head 44 to move away from the product fixing groove 13 in the transverse direction, and provides space for the vertical movement of the straight ejector head 42, so that the side reverse buckle demolding and ejecting of the current three-proof battery cover and battery assembly integrated product are realized, and the injection molding production efficiency is improved.

[0035] Please refer to Figure 4 and Figure 5 , the lower end of the straight ejector pin 41 is locked on the ejector pin base plate 26, the upper end of the straight ejector pin 41 is provided with a dovetail groove, the lower end of the straight ejector head 42 is provided with a dovetail strip which is locked in the dovetail groove, and the two are locked and connected in cooperation.

[0036] Please refer to Figure 4 and Figure 5 , the inclined ejector pin 43 is inclined, and the inclined ejector pin 43 is gradually closer to the straight ejector pin 41 from bottom to top; the ejector pin base plate 26 is provided with an inclined ejector seat 45, the lower end of the inclined ejector seat 45 is locked on the ejector pin base plate 26, the upper end of the inclined ejector seat 45 is provided with a transverse guide rail 451, and the lower end of the inclined ejector pin 43 is provided with a transverse guide groove 431 which cooperates with the transverse guide rail 451.

[0037] Specifically, please refer to Figure 4 and Figure 5 , the length direction of the transverse guide rail 451 is the same as the moving direction of the inclined ejector head 44, in this application, the transverse guide rail 451 and the transverse guide groove 431 are correspondingly provided with a “T” shaped structure to enhance the connection between the inclined ejector pin 43 and the inclined ejector seat 45.

[0038] Please refer to Figure 5 and Figure 6, the inner recess of the upper end of the oblique ejector pin 44 forms an embedding groove 441 for the straight ejector pin 42 to embed in, so that the straight ejector pin 42 is embedded in the oblique ejector pin 44, and the upper end surface of the straight ejector pin 42 is flush with the upper end surface of the oblique ejector pin 44, forming the inner wall of the product.

[0039] Please refer to Figure 3 and Figure 6 , the two ends of the embedding groove 441 are throughly arranged to enable the oblique ejector pin 44 to move laterally along the straight ejector pin 42; a lateral movement gap 46 is arranged between the oblique ejector pin 44 and the straight ejector pin 42 for the oblique ejector pin 44 to move laterally.

[0040] Specifically, please refer to Figure 3 and Figure 6 , the upper end surface of the straight ejector pin 42 is arranged flat, and the corresponding position is recessed to form an avoiding groove 421 of the product buckle 14, forming the product buckle 14; the lower end surface of the straight ejector pin 42 includes a flat section and an inclined surface, the inner wall of the embedding groove 441 includes a flat section and an inclined surface, and the length of the flat section of the lower end surface of the straight ejector pin 42 is longer than the length of the flat section of the inner wall of the embedding groove 441, and the length of the inclined surface of the lower end surface of the straight ejector pin 42 is longer than the length of the inclined surface of the inner wall of the embedding groove 441; during injection molding, the front ends of the straight ejector pin 42 and the oblique ejector pin 44 are flush, and the inclined surfaces at the rear ends form the lateral movement gap 46 of the oblique ejector pin 44, the two ends of the embedding groove 441 are throughly arranged, and at the same time, the oblique ejector pin 44 is guided laterally, ensuring the connection and relative relationship between the straight ejector pin 42 and the oblique ejector pin 44.

[0041] Please refer to Figure 4 and Figure 5 , the ejection mechanism of the injection mold further includes a guide seat 47, the guide seat 47 is arranged parallel to the ejector pin bottom plate 26, the oblique ejector pin 43 passes through the guide seat 47 and is slidably connected with the guide seat 47 in the length direction, and the guide seat 47 is provided with an inclined groove for adjusting the oblique ejector pin 43.

[0042] Further, please refer to Figure 4 and Figure 5 , the guide seat 47 is provided with a guide column 48 vertically penetrating the guide seat 47, the guide column 48 is fixed opposite to the ejector pin bottom plate 26, and the guide column 48 is parallel to the straight ejector pin 41. In this embodiment, the straight and oblique combined side is avoided for the straight ejector pin 41, the through hole of the guide seat 47 about the guide column 48 is arranged as a half hole, a limiting groove is arranged by recessing one side of the guide seat 47, the straight ejector pin 41 is arranged by being clamped into the limiting groove, and the through hole of the guide groove of the other side single oblique is arranged as a full hole about the guide column 48. The guide column 48 and the guide seat 47 strengthen the integrity of the straight and oblique ejector pins, and guide the straight ejector pin 41 and the oblique ejector pin 43 in the ejection direction.

[0043] According to another aspect of the present application, an embodiment provides an injection mold, please refer toFigure 2 and Figure 3 , injection mold includes a set of die 2, die 3 set installed in the die 2 and the above ejection mechanism 4, die 2 is the framework of the whole set of mold, all the mold parts are made to consider the structure of die 2 including panel 21, A plate 23 (front mold plate), B plate 24 (back mold plate), bottom plate 27, ejector plate 26, ejector plate 25, guide column 28, guide sleeve 29 and nozzle plate 22. Die 3 includes front die 31 and back die 32, forming the product forming mold, through the gating system injection and cooling forming, the ejector plate 26 in the injection mold, the installation position of the ejection mechanism 4 corresponding to the ejector plate 26, the injection mold opens and realizes demolding through the ejection mechanism 4.

[0044] Please refer to Figure 2 , the process of the ejection mechanism 4 of the injection mold ejecting the product is: under the corresponding ejector rod installed at the lower end of the injection mold, the ejector plate 26 and the ejector plate 25 push the straight ejector 41 and the inclined ejector 43 upward, the inclined ejector 43 is pushed by the inclined seat 45, the inclined ejector 43 moves obliquely upward along the inclined slot on the guide seat 47, the embedded groove 441 on the upper end of the inclined ejector head 44 moves horizontally to the left along the lower end surface of the straight ejector head 42, the lower end of the inclined ejector 43 adjusts to the left along the horizontal guide rail 451, so as to realize the synchronous movement in the vertical and horizontal directions and demolding.

[0045] The above application of specific examples to the utility model is described, only for helping to understand the utility model, and does not limit the utility model. For the skilled in the art to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, deformation or substitution can be made.

Claims

1. An ejection mechanism for an injection mold, characterized in that, include: Ejector base plate (26); A straight ejector pin (41) is connected at its lower end to the ejector base plate (26). A straight ejector head (42) is provided at the upper end of the straight ejector pin (41). The upper end of the straight ejector head (42) is used to eject the product along the demolding direction. The upper end of the straight ejector head (42) is provided with a groove (421) for forming a product buckle (14). An angled ejector pin (43) is set at a non-zero angle with the straight ejector pin (41). The lower end of the angled ejector pin (43) is adjustable in the lateral direction relative to the ejector pin base plate (26). An angled ejector head (44) is provided at the upper end of the angled ejector pin (43). The upper end of the angled ejector head (44) abuts against the straight ejector head (42) and slides with the straight ejector head (42). The lower end of the angled ejector head (44) is used to form a product fixing groove (13).

2. The injection mold ejection mechanism as described in claim 1, characterized in that, The oblique ejector pin (43) is positioned gradually from bottom to top closer to the straight ejector pin (41).

3. The injection mold ejection mechanism as described in claim 1, characterized in that, A lateral movement gap (46) is provided between the inclined mandrel (44) and the straight mandrel (42) for the inclined mandrel (44) to move laterally.

4. The injection mold ejection mechanism as described in claim 1, characterized in that, The ejector base plate (26) is provided with an inclined ejector seat (45), the upper end of the inclined ejector seat (45) is provided with a transverse guide rail (451), and the lower end of the inclined ejector (43) is provided with a transverse guide groove (431) that cooperates with the transverse guide rail (451).

5. The injection mold ejection mechanism as described in claim 1, characterized in that, The upper end of the inclined head (44) is recessed to form a groove (441) into which the straight head (42) is inserted. The two ends of the groove (441) are connected laterally so that the inclined head (44) can move laterally along the straight head (42).

6. The injection mold ejection mechanism as described in claim 5, characterized in that, The upper end of the inclined head (44) is flush with the upper end of the straight head (42) to form the inner wall of the product.

7. The injection mold ejection mechanism as described in claim 1, characterized in that, It also includes a guide seat (47), which is arranged parallel to the ejector base plate (26), and the oblique ejector (43) passes through the guide seat (47) and is slidably engaged with the guide seat (47) in the length direction.

8. The injection mold ejection mechanism as described in claim 7, characterized in that, The guide seat (47) has a guide post (48) that passes vertically through the guide seat (47). The guide post (48) is fixed relative to the ejector base plate (26) and is parallel to the straight ejector (41).

9. The injection mold ejection mechanism as described in claim 8, characterized in that, The guide seat (47) has a recessed groove on one side, and the straight pin (41) is inserted into the groove.

10. An injection mold, characterized in that, The injection mold is demolded using the ejection mechanism as described in any one of claims 1-9.

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