Side core-pulling mechanism and injection mold

Abstract

The side core-pulling mechanism comprises a shoveling machine and a side core-pulling sliding block which are matched with each other, the side core-pulling sliding block is provided with an ejector pin hole for containing an ejector pin in a penetrating mode, and the ejector pin is movably arranged in the ejector pin hole. The ejector pin is provided with an ejection end, an abutting end and a limiting block which is located between the ejection end and the abutting end and extends outwards along the outer circumference of the ejector pin, a boss is arranged in the ejector pin hole, a spring is arranged at the position, between the limiting block and the boss, of the ejector pin hole, the shoveling machine is concavely provided with an abutting groove corresponding to the abutting end of the ejector pin, and the depth of the abutting groove is continuously decreased from top to bottom. The abutting end of the ejector pin protrudes out of the side core-pulling sliding block and is movably arranged in the abutting groove, and the end portion of the abutting end abuts against the groove bottom wall of the abutting groove. The side pulling device is simple in structure, and the product is effectively prevented from being pulled to deform in the side pulling process.

Description

Technical Field

[0001] The utility model relates to the field of plastic product injection molding, in particular to a side core pulling mechanism and an injection mold. Background Art

[0002] As the application of consumer electronics becomes more and more widespread, electronic products such as mobile phones and tablet computers are increasingly entering people's lives. Among existing electronic products, more and more products use plastic products as shell or cover materials, and plastic products are favored by people for their light weight.

[0003] In order to maintain the strength and connectivity of plastic products, adding buckles, support columns and other structures in the cover or shell has become a common design. Generally, products with buckles and support columns are demoulded by the slide structure retreating away from the product. However, in the actual production process, because the product fits the slide mechanism and the buckles or support columns are embedded in the slide, when the mold is opened, the product usually wraps or adheres to the slide mechanism during the slide withdrawal process, which will cause serious deformation of the product. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a side core pulling mechanism and an injection mold with a simple structure to prevent the product from being pulled and deformed during the side pulling process.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a side core pulling mechanism, comprising a shovel machine and a side core pulling slider which cooperate with each other, the side core pulling slider being penetrated by an ejector hole for accommodating an ejector pin, and the ejector pin being movably arranged in the ejector hole, the ejector pin having an ejection end, an abutment end, a limit block located between the ejection end and the abutment end and extending outward along the outer circumference of the ejector pin, a boss being arranged in the ejector hole, the ejector hole being located between the limit block and the boss and provided with a spring, the shovel machine being concavely provided with an abutment groove corresponding to the abutment end of the ejector pin, the depth of the abutment groove being continuously decreased from top to bottom, the abutment end of the ejector pin protruding out of the side core pulling slider and being movably arranged in the abutment groove, and the end of the abutment end abuts against the bottom wall of the abutment groove.

[0006] Furthermore, the side core pulling mechanism also includes a stop block, the side core pulling slider is recessed with a mounting groove connected to the ejector pin hole, and the stop block is installed in the mounting groove.

[0007] Furthermore, the limit block is movably arranged between the boss and the stop block.

[0008] Furthermore, the stop block is penetrated by a movable hole for accommodating the abutting end of the ejector pin.

[0009] Furthermore, the side core-pulling slider has a first sliding surface, the mounting groove is arranged on the first sliding surface, and the outer end surface of the stop block and the first sliding surface are located on the same plane.

[0010] Furthermore, the shovel has a second sliding surface that fits the first sliding surface, and the abutment groove is provided on the second sliding surface.

[0011] Furthermore, the spring is sleeved on the periphery of the ejection end of the ejector pin.

[0012] Furthermore, the side core-pulling slider is provided with a receiving groove for receiving the shovel machine, and the shovel machine is slidably arranged in the receiving groove.

[0013] Furthermore, at least one side wall of the accommodating groove is recessed with a sliding groove, and the shovel is convexly provided with a sliding block corresponding to the sliding groove, and the sliding block is slidably arranged in the sliding groove.

[0014] The utility model provides an injection mold, comprising the above-mentioned side core pulling mechanism, wherein one end of the side core pulling slider away from the shovel machine is provided with a plurality of buckling grooves on the periphery of the ejector pin hole.

[0015] The side core-pulling mechanism and the injection mold provided by the utility model not only have a simple structure, but also effectively prevent the product from being pulled and deformed during the side-pulling process, thereby greatly improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a stereoscopic diagram of a side core pulling mechanism of the utility model.

[0018] Figure 2 for Figure 1 A three-dimensional exploded view of the side core pulling mechanism is shown.

[0019] Figure 3 It is a three-dimensional diagram from another angle of a side core pulling mechanism of the utility model.

[0020] Figure 4 for Figure 3 A three-dimensional exploded view of the side core pulling mechanism is shown.

[0021] Figure 5 It is a cross-sectional schematic diagram of a side core pulling mechanism of the utility model.

[0022] Figure 6 It is a stereoscopic diagram of the side core-pulling slider of the utility model.

[0023] Figure 7 It is a combined stereogram of the side core pulling slider and the shovel machine of the utility model.

[0024] Figure 8 It is a three-dimensional view from another angle of the side core-pulling slider of the utility model.

[0025] Fig. 9 It is a three-dimensional view from another angle of the side core-pulling slider of the utility model.

[0026] Fig.10 for Fig. 9 The side core pulling slider is shown in an enlarged partial view at position A.

[0027] Fig.11 It is a three-dimensional diagram of the shovel machine of the present utility model.

[0028] Fig.12 It is a three-dimensional diagram of the ejector of the utility model.

[0029] Fig.13 It is a three-dimensional diagram of the product produced by the side core pulling mechanism of the utility model. DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of description and simplified description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0032] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0033] See also Figure 1-Figure 13 The utility model discloses a side core pulling mechanism, which is installed on an injection mold and is used for injection molding and ejecting the injected plastic product 100. The side core pulling mechanism includes a shovel 50 and a side core pulling slider 10 that cooperate with each other. Figure 5 In this embodiment, the mold closing direction is that the shovel machine 50 moves from top to bottom, and at the same time drives the side core pulling slider 10 to move from right to left; the mold opening direction is that the shovel machine 50 moves from bottom to top, and at the same time drives the side core pulling slider 10 to move from left to right.

[0034] See also Figure 1-Figure 4 The side core-pulling slider 10 is provided with an ejector hole 15 for accommodating an ejector 20 in a direction perpendicular to the mold opening direction, and the ejector 20 is movably arranged in the ejector hole 15. The ejector 20 has an ejection end 21, an abutment end 22, and a limit block 23 located between the ejection end 21 and the abutment end 22 and extending radially outward along the outer circumference of the ejector 20. The abutment end 22 of the ejector 20 protrudes out of the side core-pulling slider 10. A boss 151 is provided in the ejector hole 15, and a spring 30 is provided in the ejector hole 15 between the limit block 23 and the boss 151. In this embodiment, the spring 30 is sleeved on the periphery of the ejector end 21 of the ejector 20.

[0035] See also Figure 2 , Figure 4 and Fig.11 The shovel 50 is provided with an abutment groove 52 corresponding to the abutment end 22 of the ejector 20. The depth of the abutment groove 52 decreases continuously from top to bottom along the mold closing direction. The abutment end 22 of the ejector 20 protrudes out of the side core-pulling slider 10 and is movably arranged in the abutment groove 52, and the end of the abutment end 22 abuts against the bottom wall of the abutment groove 52.

[0036] See also Figure 6 and Fig.11 In this embodiment, the side core-pulling slider 10 has a first sliding surface 11, and the shovel 50 has a second sliding surface 51 that fits the first sliding surface 11. The first sliding surface 11 and the second sliding surface 51 are arranged obliquely, and the bottom wall of the abutting groove 52 is parallel to the mold opening and closing directions. In more detail, the abutting groove 52 is provided on the second sliding surface 51.

[0037] When the mold is opened, the shovel 50 moves upward and drives the side core-pulling slider 10 to move to the right. Under the elastic force of the spring 30, the abutting end 22 of the ejector pin 20 always abuts against the bottom wall of the abutting groove 52, so the ejection end 21 of the ejector pin 20 extends to the outside of the side core-pulling slider 10 and abuts the product 100 to separate from the side core-pulling slider 10.

[0038] When the mold is closed, the shovel 50 moves downward, and the second sliding surface 51 of the shovel 50 squeezes the first sliding surface 11 of the side core-pulling slider 10, pushing the side core-pulling slider 10 to move leftward, and the abutting end 22 of the ejector pin 20 always abuts against the bottom wall of the abutting groove 52, and the ejection end 21 of the ejector pin 20 is retracted into the ejector hole 15.

[0039] In other embodiments, the first sliding surface 11 and the second sliding surface 51 are arranged parallel to the mold opening and closing directions, the bottom wall of the abutment groove 52 is arranged at an angle to the second sliding surface 51, and the depth of the abutment groove 52 continuously decreases from top to bottom along the mold closing direction.

[0040] When the mold is opened, the shovel 50 moves upward, and the bottom wall of the abutment groove 52 pushes the abutment end 22 of the ejector 20 to the left, so that the ejection end 21 of the ejector 20 protrudes out of the side core-pulling slider 10 and pushes the product 100 away from the side core-pulling slider 10.

[0041] When the mold is closed, the shovel 50 moves upward, and under the elastic force of the spring 30 , the abutting end 22 of the ejector 20 moves rightward along the bottom wall of the abutting groove 52 , and the ejection end 21 of the ejector 20 is retracted into the ejector hole 15 .

[0042] See also Figure 2 , Figure 4 , Figure 5 and Figure 8 The side core pulling mechanism further includes a stopper block 40, and the side core pulling slider 10 is provided with a mounting groove 14 corresponding to the stopper block 40 and connected to the ejector hole 15, and the stopper block 40 is installed in the mounting groove 14. In this embodiment, the mounting groove 14 is provided on the first sliding surface 11, and the outer end surface of the stopper block 40 is located on the same plane as the first sliding surface 11.

[0043] Furthermore, the stop block 40 is provided with a movable hole 41 for accommodating the abutting end 22 of the ejector 20. The abutting end 22 protrudes out of the first sliding surface 11 through the movable hole 41. The limit block 23 of the ejector 20 is movably disposed between the boss 151 of the ejector hole 15 and the stop block 40.

[0044] See also Figure 6-Figure 8 , Fig.11The side core pulling slider 10 is provided with a receiving groove 12 for receiving the shovel 50, so that the shovel 50 is slidably arranged in the receiving groove 12. In more detail, at least one side wall of the receiving groove 12 is provided with a sliding groove 13, and the end surface of the shovel 50 is provided with a sliding block 53 corresponding to the sliding groove 13, and the sliding block 53 is correspondingly slidably arranged in the sliding groove 13.

[0045] In this embodiment, the two opposite side walls of the receiving groove 12 of the side core-pulling slider 10 are provided with the sliding grooves 13, and the two opposite end surfaces of the shovel 50 are convexly provided with the sliding blocks. The two sliding blocks 53 are correspondingly slidably arranged in the two sliding grooves 13 to keep the shovel 50 sliding relatively and smoothly relative to the side core-pulling slider 10.

[0046] See also Fig. 9 , Fig.10 and Fig.13 The utility model also discloses an injection mold, including the above-mentioned side core pulling mechanism, wherein the side core pulling slider 10 is provided with a plurality of buckle grooves 16 on the periphery of the ejector hole 15 at one end away from the shovel 50. In this embodiment, the side core pulling mechanism includes two ejector pins 20, and the side core pulling slider 10 is provided with two ejector pin holes 15 corresponding to the two ejector pins 20. The stop block 40 is provided with two movable holes 41, and the abutting end of each ejector pin 20 is correspondingly and movably arranged in one of the movable holes. Similarly, the shovel 50 is provided with two abutting grooves 52, and each abutting groove 52 accommodates the abutting end 22 of one ejector pin 20. The product 100 is provided with an abutting surface 101, and the abutting surface 101 is provided with a plurality of buckle columns 102. When the injection mold is closed, the abutment surface 101 of the product 100 is formed on the end surface of the side core-pulling slider 10, and the snap-on column 102 is correspondingly formed in the snap-on groove 16 of the side core-pulling slider 10; when the injection mold is opened, the ejection end 21 of the ejector pin 20 abuts against the abutment surface 101 of the product 100, and the snap-on column 102 is separated from the snap-on groove 16, so as to realize smooth demoulding of the product 100.

[0047] The side core pulling mechanism and injection mold provided by the utility model are not only simple in structure, but also can effectively avoid the product 100 being pulled and deformed during the side pulling process by ejecting the product with the help of the ejector pin 20, thereby greatly improving the yield rate of the product 100.

[0048] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A side core pulling mechanism, comprising a shovel machine and a side core pulling slider that cooperate with each other, characterized in that: The side core-pulling slider is penetrated by an ejector hole for accommodating an ejector, and the ejector is movably arranged in the ejector hole, the ejector has an ejection end, an abutment end, a limit block located between the ejection end and the abutment end and extending outward along the outer circumference of the ejector, a boss is provided in the ejector hole, and a spring is provided in the ejector hole located between the limit block and the boss, the shovel machine is concavely provided with an abutment groove corresponding to the abutment end of the ejector, the depth of the abutment groove decreases continuously from top to bottom, the abutment end of the ejector protrudes out of the side core-pulling slider and is movably arranged in the abutment groove, and the end of the abutment end abuts against the bottom wall of the abutment groove.

2. The side core pulling mechanism according to claim 1, characterized in that: The side core pulling mechanism also includes a stop block, the side core pulling slider is recessed with a mounting groove connected to the ejector pin hole, and the stop block is installed in the mounting groove.

3. The side core pulling mechanism according to claim 2, characterized in that: The limiting block is movably arranged between the boss and the stopping block.

4. The side core pulling mechanism according to claim 2, characterized in that: The stop block is penetrated by a movable hole for accommodating the abutting end of the ejector pin.

5. The side core pulling mechanism according to claim 2, characterized in that: The side core-pulling slider has a first sliding surface, the mounting groove is arranged on the first sliding surface, and the outer end surface of the stop block and the first sliding surface are located on the same plane.

6. The side core pulling mechanism according to claim 5, characterized in that: The shovel has a second sliding surface that fits the first sliding surface, and the abutment groove is arranged on the second sliding surface.

7. The side core pulling mechanism according to claim 1, characterized in that: The spring is sleeved on the periphery of the ejector pin.

8. The side core pulling mechanism according to claim 1, characterized in that: The side core-pulling slide block is provided with a receiving groove for receiving the shovel machine, and the shovel machine is slidably arranged in the receiving groove.

9. The side core pulling mechanism according to claim 8, characterized in that: At least one side wall of the containing groove is recessed with a sliding groove, and the shovel is convexly provided with a sliding block corresponding to the sliding groove, and the sliding block is slidably arranged in the sliding groove.

10. An injection mold, characterized in that: It comprises the side core pulling mechanism as described in any one of claims 1 to 9, wherein the end of the side core pulling slider away from the shovel machine is provided with a plurality of buckling grooves on the periphery of the ejector hole.

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