A sloping top structure and injection mold

Abstract

This utility model discloses a slanted ejector structure and injection mold, including a slanted ejector seat, a guide seat, a slanted ejector rod, and a reverse ejector rod. The slanted ejector seat has a sliding groove and a mounting hole. The guide seat has a first guide hole and a second guide hole, with the first guide hole inclined to the vertical axis. The upper end of the slanted ejector rod has an undercut and a wrapping part, which protrude from opposite sides of the slanted ejector rod. The undercut has a first reverse ejector groove, and the lower end of the wrapping part has a second reverse ejector groove. The lower end of the slanted ejector rod is slidably connected to the sliding groove and slidably connected to the first guide hole. The upper end of the reverse ejector rod has an abutment part, and the reverse ejector rod is slidably connected to the second guide hole. The reverse ejector rod passes through the second reverse ejector groove, and the abutment part is slidably connected to the first reverse ejector groove. This utility model can prevent the undercut from hooking onto the slanted ejector rod, avoiding collision between the product and the slanted ejector structure during demolding. Furthermore, the overall structure is simple and easy to use and maintain.

Description

Technical Field

[0001] This utility model relates to the field of injection molding ejection technology, and in particular to an inclined ejector structure and an injection mold. Background Technology

[0002] Injection molds, as an important part of the mold industry, are mainly used to produce plastic products. When the mold needs to remove the molded plastic part from the cavity, if the plastic part has barbs or other complex geometric structures, a slanted ejector is needed to overcome the resistance of the plastic part during the demolding process.

[0003] However, during the demolding process, if the amount of glue on the undercut part of the product on the slanted ejector is too large, it will cause a large area to be covered between the slanted ejector and the undercut of the product. The product will hook onto the slanted ejector and move with it. During demolding, the product is prone to collision with the slanted ejector structure, which will cause the product to deform or be torn, damaging the product's shape and resulting in a low yield rate. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a sloping ejector structure and injection mold, which can prevent the product from colliding with the sloping ejector structure during demolding, protect the product's shape from damage, and improve the product yield.

[0005] A sloping roof structure according to a first aspect embodiment of the present invention includes:

[0006] The inclined top seat is provided with a sliding groove and a mounting hole. Both the sliding groove and the mounting hole are parallel to the horizontal axis, and the mounting hole is located at one end of the sliding groove in the sliding direction.

[0007] The guide seat is provided with a first guide hole and a second guide hole. The second guide hole is parallel to the vertical axis, and the first guide hole is inclined to the vertical axis.

[0008] The inclined push rod has an inverted part and a wrapping part at its upper end. The inverted part and the wrapping part protrude from opposite sides of the inclined push rod. The inverted part has a first reverse push groove, and the lower end of the wrapping part has a second reverse push groove. The first reverse push groove and the second reverse push groove are vertically connected. The lower end of the inclined push rod has a slider, which is slidably connected to the sliding groove. The sliding direction of the slider is parallel to the horizontal axis. The inclined push rod is slidably connected to the first guide hole.

[0009] The anti-top rod has an upper end with an abutment part, and the lower end of the anti-top rod is installed in the mounting hole. The anti-top rod is slidably connected to the second guide hole and passes through the second anti-top groove. The abutment part is slidably connected to the first anti-top groove. The first anti-top groove is parallel to the horizontal axis, and the width of the second anti-top groove is greater than the width of the anti-top rod.

[0010] In this embodiment, the sliding groove is a T-shaped groove, and the slider is a T-shaped slider.

[0011] In this embodiment, the mounting hole is provided with an internal thread, the lower end of the counter-rod is provided with an external thread that mates with the internal thread, and the contact part is perpendicular to the vertical axis.

[0012] In this embodiment, the end of the first anti-top groove near the wrapping part is connected to the upper end of the second anti-top groove, and the contact part is perpendicular to the anti-top rod.

[0013] An injection mold according to a second aspect of the present invention includes the inclined top structure of any of the first aspects of the present invention.

[0014] In this embodiment, the system also includes a base plate, a lower needle plate, an upper needle plate, a support plate, a moving template, and a mold core arranged sequentially from bottom to top. A square cavity is provided between the base plate, the support plate, and the moving template. The upper needle plate and the lower needle plate are located in the square cavity. The bottom end of the inclined top seat is fixedly connected to the upper needle plate.

[0015] In this embodiment, the moving template is provided with a first groove that matches the inclined ejector seat, the guide seat is fixedly connected to the mold core, and the mold core is provided with a second groove that matches the upper end of the inclined ejector rod.

[0016] This utility model embodiment has at least the following beneficial effects: The overall structure of this inclined ejector is simple, convenient for installation and maintenance. During the product ejection process, under the guidance of the guide seat, the anti-ejector moves vertically upward, and the inclined ejector moves inclined upward. The inclined ejector moves in both the horizontal and vertical directions, while the anti-ejector moves only in the vertical direction. Therefore, the inclined ejector and the anti-ejector move relative to each other in the horizontal direction, causing the inclined ejector to disengage from the product undercut and preventing the inclined ejector from hooking onto the product undercut. This avoids collisions between the product and the inclined ejector structure during demolding, not only protecting the product's shape from damage and resulting in a high product yield, but also extending the service life of the inclined ejector structure by reducing wear. Moreover, the multi-directional demolding action can be completed in one go, resulting in high demolding efficiency. In the vertical direction, the anti-ejector and the inclined ejector move upward simultaneously, improving the ejection strength of the overall inclined ejector structure. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a three-dimensional structural diagram of the sloping top structure according to the first aspect of this utility model;

[0019] Figure 2 An exploded view of the sloping roof structure according to the first aspect of this utility model. Figure 1 ;

[0020] Figure 3 An exploded view of the sloping roof structure according to the first aspect of this utility model. Figure 2 ;

[0021] Figure 4 This is a three-dimensional structural diagram of the inclined top structure when it is ejected according to the first aspect embodiment of the present utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of an injection mold according to a second aspect embodiment of the present utility model;

[0023] Figure 6 This is a top view of the injection mold according to a second aspect embodiment of the present utility model.

[0024] Figure 7 For along Figure 6 Schematic diagram of the cross-sectional structure of AA;

[0025] Figure 8 for Figure 7 A magnified structural diagram of B in the diagram.

[0026] The attached figures are labeled as follows:

[0027] 1. Slanted top seat; 2. Guide seat; 3. Slanted top rod; 4. Counter-top rod;

[0028] 11. Sliding groove; 12. Mounting hole;

[0029] 21. First guide hole; 22. Second guide hole;

[0030] 31. Inverted part; 32. Wrapping part; 33. Slider; 34. First reverse top groove; 35. Second reverse top groove;

[0031] 41. The part that is in contact with the object;

[0032] 51. Base plate; 52. Lower needle plate; 53. Upper needle plate; 54. Support plate; 55. Moving template;

[0033] 56. Mold core; 551. First groove; 561. Second groove. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, if the wire sleeve or bracket is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] The following is for reference only. Figure 1 To be continued Figure 8 This describes the inclined top structure and injection mold of the present invention.

[0039] Reference Figures 1 to 4 The first aspect of this utility model provides a sloping top structure, including a sloping top seat 1, a guide seat 2, a sloping top rod 3, and a counter-top rod 4. The sloping top seat 1 has a sliding groove 11 and a mounting hole 12, with the mounting hole 12 located outside one end of the sliding guide of the sliding groove 11. The guide seat 2 has a first guide hole 21 and a second guide hole 22, with the second guide hole 22 parallel to the vertical axis and the first guide hole 21 inclined to the vertical axis and along the extension direction of the sliding groove 11. The upper end of the sloping top rod 3 has an undercut portion 31 and a wrapping portion 32, and the lower end of the sloping top rod 3 has a slider 33. The undercut portion 31 and the wrapping portion 32 protrude from opposite sides of the sloping top rod 3. Part 31 is provided with a first anti-top groove 34, and the lower end of the wrapping part 32 is provided with a second anti-top groove 35. The first anti-top groove 34 and the second anti-top groove 35 are vertically connected. The upper end of the anti-top rod 4 is provided with an abutment part 41, which is slidably connected to the first anti-top groove 34. The inclined rod 3 is slidably connected to the sliding groove 11 of the inclined top seat 1 through the slider 33. The inclined rod 3 is slidably connected to the guide seat 2 through the first guide hole 21. The anti-top rod 4 is slidably connected to the guide seat 2 through the second guide hole 22. The anti-top rod 4 is fixedly connected to the inclined top seat 1 through the mounting hole 12. The anti-top rod 4 is slidably connected to the inclined top rod 3 through the second anti-top groove 35 and the first anti-top groove 34. This inclined top structure is simple in general and easy to install and maintain.

[0040] It is understandable that the end of the first anti-top groove 34 near the wrapping part 32 is connected to the upper end of the second anti-top groove 35, forming a 7-shaped groove. The abutting part 41 provided at the upper end of the anti-top rod 4 is perpendicular to the rod body of the anti-top rod 4, and the whole presents a 7-shaped shape that matches the 7-shaped groove. In the mold closing state, in order to protect the product from being undercut, the abutting part 41 cannot exceed or be lower than the open end of the first anti-top groove 34.

[0041] It is understandable that the upper end of the inclined push rod 3 is provided with an inverted part 31 and a wrapping part 32, which protrude from opposite sides of the inclined push rod 3 parallel to the horizontal axis. The first reverse push groove 34 only passes through the inverted part 31 laterally, and is used for the contact part 41 to hold the product in place. The second reverse push groove 35 passes vertically through the wrapping part 32 with the highest point of the first reverse push groove 34 as the starting point. The width of the second reverse push groove 35 is greater than the width of the reverse push rod 4 body and less than the width of the wrapping part 32. The entire wrapping part 32 wraps around the upper end of the reverse push rod 4. Therefore, the reverse push member 4 is subjected to force and moves along the vertical axis. The inclined push rod 3 is subjected to force and moves along the first guide hole 21 on both the horizontal and vertical axes. On the vertical axis, the inclined push rod 3 and the reverse push member 4 simultaneously perform the push-out action, which improves the overall push-out strength of the inclined push structure.

[0042] When the inclined ejector structure is in the ejection process, the inclined ejector seat 1 moves upward, which drives the inclined ejector rod 3 and the anti-ejector rod 4 to move upward. Under the action of the guide seat 2, the inclined ejector rod 3 and the anti-ejector rod 4 are ejected at an angle, that is, displacement occurs on both the horizontal and vertical axes. The lower end of the inclined ejector rod 3 slides under the cooperation of the sliding groove 11 and the slider 33. The anti-ejector rod 4 is displaced on the vertical axis and rises synchronously with the upward movement of the inclined ejector rod 3. The anti-ejector rod 4 and the inclined ejector rod 3 are relatively displaced on the horizontal axis. The inclined ejector rod 3 gradually moves closer to the anti-ejector rod 4 on the horizontal axis. The contact part 41 at the upper end of the anti-ejector rod 4 gradually protrudes from the open end of the first anti-ejector groove 34, abutting against the product undercut, ensuring that the inclined ejector rod 3 is disengaged from the product undercut, preventing the product from hooking onto the inclined ejector and moving with the inclined ejector, thereby avoiding collision between the product and the inclined ejector structure during demolding.

[0043] It is understandable that the sliding groove 11 on the inclined ejector seat 1 is a T-shaped groove, and the slider 33 at the lower end of the inclined ejector rod 3 is a T-shaped slider that cooperates with the T-shaped groove, which helps to improve the stability of the demolding process.

[0044] It is understood that the mounting hole 12 is provided with an internal thread, and the lower end of the reverse push rod 4 is provided with an external thread that mates with the internal thread, so as to facilitate the fixing and installation of the reverse push rod 4 on the inclined push seat 1.

[0045] Based on the above implementation plan, see Figures 5 to 8The second aspect of this utility model provides an injection mold, including the inclined ejector structure of any of the first aspects of the present invention, including a rear mold, the inclined ejector structure being disposed in the rear mold, the undercut portion 31 on the inclined ejector rod 3 corresponding to the undercut of the product, the rear mold plate including a bottom plate 51, a lower needle plate 52, an upper needle plate 53, a support plate 54, a moving mold plate 55 and a mold core 56 arranged sequentially from bottom to top, a square cavity is provided between the bottom plate 51, the support plate 54 and the moving mold plate 55, the upper needle plate 53 and the lower needle plate 52 are disposed in the square cavity and can move toward or away from the moving mold plate 55, the bottom end of the inclined ejector seat 1 is fixedly connected to the upper needle plate 53, the moving mold plate 55 is provided with a first slide groove 551 matching the inclined ejector seat 1, the inclined ejector seat 1 is slidably connected to the first slide groove 551, the guide seat 2 is fixedly connected to the mold core 56, the mold core 56 is provided with a second slide groove 561 matching the upper end of the inclined ejector rod 3, the undercut portion 31 and the wrapping portion 32 at the upper end of the inclined ejector rod 3 are both slidably connected to the second slide groove 561.

[0046] When the mold performs the ejection action, the injection molding machine provides power to eject the lower needle plate 52 upward. The upper needle plate 53 and the inclined ejector seat 1, which are installed together with the lower needle plate 52, move upward synchronously in the enclosed square cavity. The lower end of the inclined ejector rod 3 is slidably connected to the inclined ejector seat 1 through the sliding groove 11. The reverse ejector rod 4 is fixedly connected to the inclined ejector seat 1 through the threaded engagement. The inclined ejector seat 1 is ejected upward through the first sliding groove 551. The inclined ejector rod 3, which is slidably connected to the inclined ejector seat 1, and the reverse ejector rod 4, which is fixedly connected to the inclined ejector seat 1, are restricted by the guide seat 2 fixedly installed on the mold core 56. The inclined ejector rod 3 is ejected upward at an angle, and the reverse ejector rod 4 is ejected upward along the vertical axis. Therefore, a relative displacement occurs between the two rods on the horizontal axis. The inclined ejector rod 3 gradually approaches the reverse ejector rod 4, and the contact part 41 gradually protrudes from the open end of the first reverse ejector groove 34, abutting against the undercut position of the product. The inclined ejector rod 3 ejects the product while disengaging from the undercut.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A sloping roof structure, characterized in that, include: The inclined top seat (1) is provided with a sliding groove (11) and a mounting hole (12). The sliding groove (11) and the mounting hole (12) are both parallel to the horizontal axis, and the mounting hole (12) is located at one end of the sliding groove (11). The guide seat (2) is provided with a first guide hole (21) and a second guide hole (22), the second guide hole (22) is parallel to the vertical axis, and the first guide hole (21) is inclined to the vertical axis; An inclined push rod (3) has an inverted part (31) and a wrapping part (32) at its upper end. The inverted part (31) and the wrapping part (32) protrude from opposite sides of the inclined push rod (3). The inverted part (31) has a first reverse top groove (34). The wrapping part (32) has a second reverse top groove (35) at its lower end. The first reverse top groove (34) and the second reverse top groove (35) are vertically connected. The inclined push rod (3) has a slider (33) at its lower end. The slider (33) is slidably connected to the sliding groove (11). The sliding direction of the slider (33) is parallel to the horizontal axis. The inclined push rod (3) is slidably connected to the first guide hole (21). The anti-top rod (4) has an upper end with a contact part (41) and a lower end installed in the mounting hole (12). The anti-top rod (4) is slidably connected to the second guide hole (22). The anti-top rod (4) passes through the second anti-top groove (35). The contact part (41) is slidably connected to the first anti-top groove (34). The first anti-top groove (34) is parallel to the horizontal axis. The width of the second anti-top groove (35) is greater than the width of the anti-top rod (4).

2. The sloping roof structure according to claim 1, characterized in that, The sliding groove (11) is a T-shaped groove, and the slider (33) is a T-shaped slider.

3. The sloping roof structure according to claim 1, characterized in that, The mounting hole (12) is provided with an internal thread, the lower end of the anti-push rod (4) is provided with an external thread that mates with the internal thread, and the contact part (41) is perpendicular to the vertical axis.

4. The sloping roof structure according to claim 1, characterized in that, The first anti-top groove (34) is connected to the upper end of the second anti-top groove (35) near the wrapping part (32), and the abutting part (41) is perpendicular to the anti-top rod (4).

5. An injection mold, characterized in that, Including the sloping roof structure as described in any one of claims 1 to 4.

6. The injection mold according to claim 5, characterized in that, It also includes a base plate (51), a lower needle plate (52), an upper needle plate (53), a support plate (54), a moving template (55), and a mold core (56) arranged sequentially from bottom to top. A square cavity is provided between the base plate (51), the support plate (54), and the moving template (55). The upper needle plate (53) and the lower needle plate (52) are located in the square cavity. The bottom end of the inclined top seat (1) is fixedly connected to the upper needle plate (53).

7. An injection mold according to claim 6, characterized in that, The moving template (55) is provided with a first groove (551) that matches the inclined top seat (1), the guide seat (2) is fixedly connected to the mold core (56), and the mold core (56) is provided with a second groove (561) that matches the upper end of the inclined top rod (3).

Images