Split type angle ejector rod and mold thereof

Abstract

The utility model relates to the technical field of injection molds, in particular to a split type angle ejector rod and a mold thereof, the angle ejector rod is split into two workpieces, namely a rod head and a rod body, and the two workpieces are connected together through a dovetail groove and a pin, so that the same ejection effect as that of a long angle ejector rod is realized. When the angle ejector rod is processed, the rod head and the rod body can be processed separately, so that the processing difficulty of the rod head and the deformation of the rod body are reduced, the processing precision is also improved, and the overall manufacturing cost is reduced. The strength of the rod head is higher than that of the rod body, and the rod body is firstly broken when breakage occurs in the injection molding production process; the rod body is few in machining procedures and free of glue positions, CNC, EDM and other procedures are not needed, only wire cutting and a grinding machine are needed, the machining time is greatly shortened, and therefore the rod body can be rapidly replaced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and particularly relates to a split-type ejector pin and a mold thereof. Background Art

[0002] At present, when producing plastic shell products using injection molds, it is usually necessary to configure a relatively long ejector pin in the mold. When the injection process is completed, the product is ejected from the mold under the action of the ejector pin.

[0003] However, due to its relatively long length, the existing ejector pin has a relatively large ejection stroke. For example, Figure 1 as shown in the ejector pin, its length reaches more than 420 mm, and the ejection stroke reaches more than 95 mm. When ejecting the product, the ejector pin is subjected to a large force from the ejector plate, and is prone to deformation or fracture, resulting in failure. The failed ejector pin is difficult to repair, with high cost and long time, seriously affecting production efficiency. In addition, when manufacturing a relatively long ejector pin, it is very easy to deform during wire cutting. After wire cutting, it still needs to be processed by a grinding machine. Moreover, there is a plastic surface on the head of the ejector pin, resulting in that some surfaces of the ejector pin cannot be placed flat, and fixtures are required for processing. The processing difficulty is relatively high, the processing time is also relatively long, and the manufacturing cost is high.

[0004] Therefore, in view of the above technical problems, the utility model provides a split-type ejector pin, in which the ejector pin is detachably connected by a pin head and a pin body. The pin head and the pin body are processed separately and then assembled. After the pin body fails, the pin body can be quickly replaced to solve one or more of the above problems. Summary of the Utility Model

[0005] In view of the above problems existing in the prior art, the utility model provides a split-type ejector pin, including a pin head and a pin body. The pin body is detachably connected to the pin head. A plastic surface is formed on the pin head, and the pin body is formed as a guiding part.

[0006] Optionally, the pin head is provided with a clamping groove, and the pin body is provided with a clamping protrusion. The clamping groove cooperates with the clamping protrusion for detachable connection.

[0007] Optionally, the clamping groove is provided with a first pin hole, and the clamping protrusion is provided with a second pin hole. The first pin hole and the second pin hole are connected by a pin.

[0008] Optionally, the clamping groove is provided as a dovetail groove, and the clamping protrusion is provided as a dovetail protrusion.

[0009] The utility model also provides a mold, including the above ejector pin. The ejector pin is inserted into the rear mold core and passes through the moving template.

[0010] Optionally, the moving template is configured with a guiding block for cooperative installation with the ejector pin, and the pin body slides under the guidance of the guiding block.

[0011] Optionally, the lower end of the rod body is connected to the ejector pin panel through an inclined ejector seat.

[0012] Optionally, the inclined ejector seat includes a seat body and a slider. The seat body is fixedly connected to the ejector pin panel. A slide rail is provided on the seat body. The slider is installed in cooperation with the slide rail, and the rod body is rotatably connected to the slider.

[0013] The technical solution of the present utility model has the following advantages or beneficial effects:

[0014] The split inclined ejector rod and its mold provided by the present utility model split the inclined ejector rod into two workpieces, namely a rod head and a rod body, and connect the two workpieces together through the connection method of a dovetail groove and a pin, realizing the same ejection function as a long inclined ejector rod. When processing this inclined ejector rod, the rod head and the rod body can be processed separately, reducing the processing difficulty of the rod head and the deformation of the rod body, improving the processing accuracy, and reducing the overall manufacturing cost. Moreover, the strength of the rod head is stronger than that of the rod body. During the injection molding production process, if a fracture occurs, the rod body will break first; and the rod body has fewer processing procedures, no glue position, and does not require processes such as CNC and EDM. Only wire cutting and grinding machines are needed, greatly shortening the processing time, so that the rod body can be quickly replaced, improving the production efficiency. Description of the Drawings

[0015] With reference to the accompanying drawings, the embodiments of the present utility model are described more fully. However, the accompanying drawings are only for illustration and explanation and do not constitute a limitation on the scope of the present utility model.

[0016] Figure 1 is a schematic structural view of an inclined ejector rod of the prior art;

[0017] Figure 2 is a schematic structural view of a mold applying the inclined ejector of the prior art;

[0018] Figure 3 is a schematic structural view of the split inclined ejector rod of the present utility model;

[0019] Figure 4 is an exploded view of the split inclined ejector rod of the present utility model;

[0020] Figure 5 is a schematic structural view of a mold applying the split inclined ejector rod of the present utility model;

[0021] Figure 6 is a schematic cross-sectional view of a mold applying the split inclined ejector rod of the present utility model;

[0022] Figure 7 is a schematic structural view of the split inclined ejector rod of the present utility model assembled in a mold.

[0023] Illustration:

[0024] 1. Tilt ejector rod; 11. Rod head; 12. Rod body; 13. Glue surface; 14. Guide part; 15. Card slot;

[0025] 16. Card convex; 17. First pin hole; 18. Second pin hole;

[0026] 2. Pin;

[0027] 3. Mold; 31. Bottom plate; 32. Ejector pin panel; 33. Square iron; 34. Moving template; 35. Rear mold core;

[0028] 36. Guide block; 37. Tilt ejector seat;

[0029] 371. Seat body; 372. Slide block; 373. Slide rail;

[0030] 4. Injection molded product. Detailed implementation mode

[0031] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present utility model more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0033] In the description of the present utility model, unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] In the description of the present utility model, technical terms such as "first", "second", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0035] Figure 1 is the inclined ejector rod 1 in the prior art. Figure 2 The inclined ejector rod 1 is applied to the injection mold 3. After injection molding, the inclined ejector rod 1 can eject the injection product 4 from the rear mold core. As Figure 1 shown, the length of the inclined ejector rod 1 is 423 mm, the size of its guiding part 14 is 14 * 11 mm, and it is very easy to deform during wire cutting. After wire cutting, it still needs to be processed by a grinding machine. In addition, there is a glue surface 13 on the head of the inclined ejector rod 1, which causes some surfaces of the inclined ejector rod 1 unable to be placed flat, and a jig is required for processing, resulting in high processing difficulty and manufacturing cost. In addition, during injection production, due to the inclined ejector rod 1 being too long, the ejection stroke is very high (95 mm), which leads to a long length of the inclined ejector rod 1 leaving the surface of the mold 3 in the ejection state, that is, the suspended length is also very long, and the inclined ejector rod 1 is very easy to break. When the inclined ejector rod 1 breaks, it means that the entire inclined ejector rod 1 needs to be replaced, and it takes about 10 days to produce one such inclined ejector rod 1, which has a great impact on production capacity and delivery.

[0036] Embodiment 1

[0037] As Figures 3-4 shown, Embodiment 1 of the present utility model provides a split inclined ejector rod 1. The inclined ejector rod 1 is split, and it includes a rod head 11 and a rod body 12. The rod body 12 is detachably connected to the rod head 11. A glue surface 13 is formed on the rod head 11, and the rod body 12 is formed as a guiding part 14. The glue surface 13 is used for molding the injection product 4, and the guiding part 14 is used for guiding the movement direction of the inclined ejector rod 1 when ejecting the injection product 4. Specifically, in this embodiment, a card slot 15 is provided at the lower end of the rod head 11, and a card projection 16 is provided at the upper end of the rod body 12. The card projection 16 is snapped into the card slot 15 for detachable and stable connection.

[0038] Further, in this embodiment, a first pin hole 17 is provided on the side surface of the card slot 15, and a second pin hole 18 is provided on the end surface of the card projection 16. When the card projection 16 is snapped into the card slot 15, the first pin hole 17 is aligned with the second pin hole 18, and then a pin 2 is used to pass through the first pin hole 17 and the second pin hole 18 for connection, so as to fix the rod head 11 and the rod body 12 to form an integral body.

[0039] Further, in this embodiment, the card slot 15 is set as a dovetail groove, and the card projection 16 is set as a dovetail projection. Of course, the settings of the card slot 15 and the card projection 16 are not limited to the dovetail groove and the dovetail projection, as long as they can satisfy the stable connection between the rod head and the rod body 12 and can realize the detachable connection between the rod head 11 and the rod body 12.

[0040] The angled ejector rod 1 of this embodiment separates the angled ejector rod 1 into two workpieces, namely the rod head 11 and the rod body 12, and connects the two workpieces together through the connection method of the dovetail groove and the pin, achieving the same ejection function as the long angled ejector rod 1. When machining this angled ejector rod 1, the rod head 11 and the rod body 12 can be machined separately, reducing the machining difficulty of the rod head 11 and the deformation of the rod body 12, improving the machining accuracy, and reducing the overall manufacturing cost.

[0041] Embodiment Two

[0042] As Figures 5-7 shown, Embodiment Two of the present utility model provides a mold 3. The mold 3 includes the angled ejector rod 1 in Embodiment One, and also includes a bottom plate 31, a thimble panel 32, a spacer block 33, a moving template 34, a rear mold core 35, etc. The bottom plate 31 is installed with the spacer block 33 and the moving template 34. The thimble panel 32 is movably arranged on the bottom plate 31 and is located within the spacer block 33. The rear mold core 35 is arranged on the moving template 34. The angled ejector rod 1 is inserted into the rear mold core 35 and passes through the moving template 34.

[0043] Furthermore, in this embodiment, a guide block 36 is fixedly installed below the moving template 34 through bolts. The guide block 36 is a block structure, and a guide hole (not shown) is provided in the middle thereof. The shape of the guide hole is adapted to the shape of the rod body 12. The guide block 36 is installed in cooperation with the angled ejector rod 1, and the rod body 12 can slide up and down under the guidance of the guide block 36; when the rod body 12 slides upward, the angled ejector rod 1 can eject the injection molded product 4.

[0044] Furthermore, in this embodiment, the lower end of the rod body 12 is connected to the thimble panel 32 through an angled ejector seat 37. Specifically, the angled ejector seat 37 includes a seat body 371 and a slider 372. The seat body 371 is fixedly connected to the thimble panel 32 through bolts. A slide rail 373 is provided on the seat body 371. The slider 372 is installed on the slide rail 373 and can translate along the slide rail 373. The rod body 12 is rotatably connected to the slider 372 through a pin. When the angled ejector rod 1 moves up and down, the angle between the angled ejector rod 1 and the slider 372 changes, and it slightly translates in the front-back direction of the slide rail 373.

[0045] In the mold 3 of this embodiment, during the injection molding production, since the strength of the rod head 11 is stronger than that of the rod body 12, the rod body 12 will break first in case of fracture during the injection molding production process; and the rod body 12 has fewer processing procedures, no glue positions, and does not require processes such as CNC and EDM. Only wire cutting and grinding machines are needed, and usually, the machining of the rod body 12 can be completed in only 3 days, greatly shortening the machining time, so that the rod body 12 can be quickly replaced, improving the production efficiency.

[0046] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0047] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A split inclined ejector rod, characterized in that, It includes a club head and a shaft, the shaft is detachably connected to the club head, a glue plane is formed on the club head, and the shaft is formed as a guiding part; The club head is provided with a clamping groove, the shaft is provided with a clamping projection, and the clamping groove cooperates with the clamping projection for detachable connection.

2. The split inclined ejector rod according to claim 1, characterized in that, The clamping groove is provided with a first pin hole, the clamping projection is provided with a second pin hole, and the first pin hole and the second pin hole are connected by a pin.

3. The split inclined ejector rod according to claim 1, characterized in that, The clamping groove is arranged as a dovetail groove, and the clamping projection is arranged as a dovetail projection.

4. A mold, characterized in that, It includes the lifter rod according to any one of claims 1-3, and the lifter rod is inserted into the rear mold core and passes through the moving template.

5. The mold according to claim 4, characterized in that, The moving template is configured with a guiding block for cooperative installation with the lifter rod, and the shaft slides under the guidance of the guiding block.

6. The mold according to claim 5, characterized in that, The lower end of the shaft is connected to the ejector pin panel through a lifter block.

7. The mold according to claim 6, characterized in that, The lifter block includes a body and a slider, the body is fixedly connected to the ejector pin panel, a slide rail is arranged on the body, the slider is installed in cooperation with the slide rail, and the shaft is rotatably connected to the slider.

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