Injection mold with downward inclined top structure

Abstract

The utility model provides an injection mold with a downward pitched roof structure, which comprises a bottom plate, an upper mold plate, a top plate, a pitched roof seat, a pitched roof sliding block, a pitched roof and a guide rod, the upper end part of the pitched roof penetrates through the upper mold plate and an upper mold core arranged on the upper surface of the upper mold plate, the middle part of the pitched roof penetrates through a guide block embedded in the lower surface of the upper mold plate in a sliding manner, and the lower end part of the pitched roof is rotationally connected with a pitched roof sliding block; the upper end part is connected with the guide block, the middle part slidably penetrates through the pitched roof sliding block, and the lower end part penetrates through the pitched roof seat and the top plate and is connected with the bottom plate; when the ejector plate drives the pitched roof base to move upwards, the pitched roof sliding block can slide in the inclined direction along the guide rod, then the lower end of the pitched roof is pulled to slide in the inclined direction, the downward pitched ejection action of the pitched roof is achieved, the stress of the lower end of the pitched roof is shared, and therefore the fracture probability of the pitched roof is reduced, the stability of the injection mold is enhanced, and the mold repairing and maintaining frequency is reduced. The production efficiency is improved and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to an injection molding mold with a descending inclined top structure. Background Art

[0002] Small household appliances are common small household appliances with small size and compact structure. In order to improve practicality and aesthetics, most of them use arc-shaped injection molded parts as shells, decorative covers, anti-slip covers, etc. In order to facilitate connection, most of these injection molded parts are also provided with radial slots and other structures, such as Figure 1 A non-slip cover for preventing a hair dryer from flying up is shown, which includes an arc-shaped injection molded part 1, on which a slot 2 is provided which runs through the arc-shaped injection molded part 1 in its radial direction. During injection molding, the structure needs to be ejected by an inclined top, and during the ejection process, the inclined top needs to slide downward (downward) in the radial direction of the main body 1. Therefore, the lower end of the inclined top is usually rotatably connected to the inclined top slider, and the inclined top slider is slidably arranged in an inclined slide groove in the inclined top seat for guidance to achieve the purpose of downward inclined top. However, when an injection mold with such a structure is actually used, the lower end of the inclined top must withstand both the upward oblique ejection force and the friction force between the inclined top slider and the inclined top seat. The force is much greater than that of a conventional inclined top, and the root of the inclined top is very easy to break. In addition, the smoothness of the downward oblique ejection action is not high. Affected by the downward angle, the movement resistance is also difficult to control, which makes the overall movement of the injection mold unstable, requires frequent shutdowns for maintenance, and has low efficiency. Utility Model Content

[0003] The utility model aims to solve one or more problems in the prior art and provides an injection mold with a descending inclined top structure.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is an injection mold with a downward inclined top structure, comprising:

[0005] Base plate;

[0006] An upper template, the upper template is arranged above the bottom plate, an upper mold core for molding a part of the inner wall of the arc-shaped injection molded part with a slot is arranged in the middle of the upper surface of the upper template, and a guide block is embedded in the lower surface of the upper template;

[0007] A top plate, the top plate is movably disposed between the bottom plate and the upper template;

[0008] An inclined top seat, the inclined top seat is fixedly connected to the upper surface of the top plate, an inclined slide groove is provided on the upper surface of the inclined top seat, and an extending direction of the inclined slide groove is parallel to a direction in which the card slot penetrates the arc-shaped injection molded part;

[0009] An inclined top sliding block, wherein the inclined top sliding block is slidably disposed in the inclined sliding groove;

[0010] The angled ejector pin, the upper end portion of which penetrates through the upper template and the upper mold core, is used to form the other part of the inner wall of the arc-shaped injection molded part and the card slot. The middle portion of the angled ejector pin slidably penetrates through the guide block, and the lower end portion of the angled ejector pin is rotatably connected to the angled ejector slider;

[0011] The injection mold with a downward angled ejector pin structure further includes a guide rod parallel to the angled ejector pin. The upper end portion of the guide rod is connected to the guide block. The middle portion of the guide rod slidably penetrates through the angled ejector slider. The lower end portion of the guide rod penetrates through the angled ejector seat and the top plate and is connected to the bottom plate. When the top plate drives the angled ejector seat to move upward, the angled ejector slider slides obliquely along the guide rod, pulling the lower end portion of the angled ejector pin to slide obliquely, so as to share the force on the lower end portion of the angled ejector pin.

[0012] Preferably, the lower end portion of the angled ejector pin is rotatably connected to the angled ejector slider through a first rotating shaft extending in the front-rear direction.

[0013] Further preferably, the upper end portion of the guide rod is rotatably connected to the guide block through a second rotating shaft, and the lower end portion of the guide rod is rotatably connected to the bottom plate through a third rotating shaft. The second rotating shaft and the third rotating shaft are both parallel to the first rotating shaft.

[0014] Further preferably, a receiving hole for receiving the upper end portion of the guide rod is formed on the guide block. The receiving hole penetrates through the guide block in the up-down direction, and there is a gap between the inner wall of the receiving hole and the outer wall of the guide rod.

[0015] Further preferably, a first receiving groove for receiving the lower end portion of the guide rod is formed on the upper surface of the bottom plate, and there is a gap between the groove wall of the first receiving groove and the outer wall of the guide rod.

[0016] Further preferably, a connecting seat is embedded on the lower surface of the bottom plate. The connecting seat penetrates through the bottom plate upward, and the first receiving groove is formed on the upper surface of the connecting seat.

[0017] Further preferably, a first fitting hole for passing through the guide rod is formed on the angled ejector seat, and a second fitting hole for passing through the guide rod is formed on the top plate. There are gaps between the inner walls of the first fitting hole, the second fitting hole and the outer wall of the guide rod.

[0018] Further preferably, the first fitting hole penetrates through the angled ejector seat in the up-down direction, and the second fitting hole penetrates through the top plate in the up-down direction.

[0019] Further preferably, the first rotation axis is located at a lower end of the inclined top sliding block, and the guide rod passes through a higher end of the inclined top sliding block.

[0020] Further preferably, a second accommodating groove for accommodating the lower end of the inclined roof is provided at a lower end of the inclined roof, and a gap is provided between a groove wall of the second accommodating groove and an outer wall of the inclined roof.

[0021] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0022] The utility model provides an injection mold with a downward inclined top structure, comprising a bottom plate, an upper template, a top plate, an inclined top seat, an inclined top slider, an inclined top, and a guide rod. The inclined top slider is slidably arranged in an inclined sliding groove on the inclined top seat, the upper end portion of the inclined top penetrates the upper template and an upper mold core arranged on the upper surface of the upper template, the middle portion can slidably penetrate a guide block embedded in the lower surface of the upper template, and the lower end portion is rotatably connected with the inclined top slider. By making the guide rod parallel to the inclined top, the upper end portion of the inclined top is connected with the guide block, the middle portion can slidably penetrate the inclined top slider, and the lower end portion penetrates the inclined top seat and the top plate and is connected to the bottom plate; when the top plate drives the inclined top seat to move upward, the inclined top slider can slide obliquely along the guide rod, and then pulls the lower end portion of the inclined top to slide obliquely, which not only realizes the downward inclined ejection action of the inclined top, but also distributes the force on the lower end portion of the inclined top, thereby reducing the probability of its breakage, enhancing the stability of the injection mold, reducing the frequency of mold repair and maintenance, improving production efficiency and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of an anti-flying and anti-slip cover of a hair dryer.

[0024] Figure 2 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model.

[0025] Figure 3 yes Figure 2 Schematic diagram of the main view.

[0026] Figure 4 yes Figure 2 Schematic diagram of the cross-section in the AA direction. At this time, the inclined top has not been ejected.

[0027] Figure 5 yes Figure 2 Schematic diagram of the cross-section in the AA direction. At this time, the inclined top has been ejected.

[0028] Wherein: 1. Arc-shaped injection molded part; 2. Card slot; 10. Bottom plate; 11. First receiving groove; 12. Connecting seat; 20. Upper template; 21. Upper mold core; 22. Guide block; 23. Receiving hole; 30. Top plate; 31. Second mating hole; 40. Oblique ejector base; 41. Oblique chute; 42. First mating hole; 50. Oblique ejector slider; 51. Second receiving groove; 60. Oblique ejector; 61. First rotating shaft; 70. Guide rod; 71. Second rotating shaft; 72. Second rotating shaft. Detailed implementation mode

[0029] As Figures 2 to 5 shown, the injection mold with a downward inclined ejector structure provided by the present utility model includes: a bottom plate 10, an upper template 20, a top plate 30, an oblique ejector base 40, an oblique ejector slider 50, an oblique ejector 60, and a guide rod 70. Among them, the plane where the bottom plate 10 is located is parallel to the horizontal plane, the upper template 20 is arranged parallel above the bottom plate 10, and in the middle of the upper surface of the upper template 20, there is an upper mold core 21 for forming a part of the inner wall of the arc-shaped injection molded part 1 with a card slot 2. The lower surface of the upper template 20 is embedded with a guide block 22; the top plate 30 is arranged between the bottom plate 10 and the upper template 20 so as to be movable up and down, and is used to drive the oblique ejector 60 to eject; the oblique ejector base 40 is fixedly connected to the upper surface of the top plate 30, and an oblique chute 41 is opened on the upper surface of the oblique ejector base 40, and the extending direction of the oblique chute 41 is parallel to the direction in which the card slot 2 penetrates the arc-shaped injection molded part 1; the oblique ejector slider 50 is slidably arranged in the oblique chute 41; the oblique ejector 60 is an inclined rod-shaped component, the upper end of the oblique ejector 60 penetrates the upper template 20 and the upper mold core 21, and is used to form another part of the inner wall of the arc-shaped injection molded part 1 and the card slot 2. The middle part of the oblique ejector 60 slidably penetrates the guide block 22, and the lower end of the oblique ejector 60 is rotatably connected to the oblique ejector slider 50. Specifically, the lower end of the oblique ejector 60 is rotatably connected to the oblique ejector slider 50 through a first rotating shaft 61 extending in the front-rear direction; the guide rod 70 is parallel to the oblique ejector 60, the upper end of the guide rod 70 is connected to the guide block 22, the middle part of the guide rod 70 slidably penetrates the oblique ejector slider 50, and the lower end of the guide rod 70 penetrates the oblique ejector base 40 and the top plate 30 and is connected to the bottom plate 10; the advantage of such a setting is that when the top plate 30 drives the oblique ejector base 40 to move upward, the oblique ejector slider 50 can slide obliquely along the guide rod 70, thereby pulling the lower end of the oblique ejector 60 to slide obliquely, which not only realizes the downward inclined ejection action of the oblique ejector 60, but also distributes the force on the lower end of the oblique ejector 60, thereby reducing the probability of its fracture, enhancing the stability of the injection mold, reducing the frequency of mold repair and maintenance, improving production efficiency and saving costs.

[0030] To enable the guide rod 70 to have an automatic fine-tuning function, in this embodiment, the upper end of the guide rod 70 is rotatably connected to the guide block 22 through a second rotating shaft 71, and the lower end of the guide rod 70 is rotatably connected to the bottom plate 10 through a third rotating shaft 72. Both the second rotating shaft 71 and the third rotating shaft 72 are parallel to the first rotating shaft 61. At the same time, a first fitting hole 42 for passing through the guide rod 70 is provided on the inclined ejector base 40. The first fitting hole 42 penetrates the inclined ejector base 40 in the up and down direction. A second fitting hole 31 for passing through the guide rod 70 is provided on the top plate 30. The second fitting hole 31 penetrates the top plate 30 in the up and down direction. There are gaps between the inner walls of the first fitting hole 42, the inner walls of the second fitting hole 31 and the outer wall of the guide rod 70. So that when the top plate 30 drives the inclined ejector base 40 to move upward, through the rotation of the upper end and / or the lower end of the guide rod 70, the inclined posture of the guide rod 70 changes, thereby finely adjusting the sliding direction and the sliding distance of the inclined ejector slider 50 to adapt to the deformation of the ejector rod 60.

[0031] To facilitate the setting of the second rotating shaft 71, in this embodiment, a receiving hole 23 for receiving the upper end of the guide rod 70 is provided on the guide block 22. The receiving hole 23 penetrates the guide block 22 in the up and down direction. There is a gap between the inner wall of the receiving hole 23 and the outer wall of the guide rod 70.

[0032] To facilitate the setting of the third rotating shaft 72, in this embodiment, a first receiving groove 11 for receiving the lower end of the guide rod 70 is provided on the upper surface of the bottom plate 10. There is a gap between the groove wall of the first receiving groove 11 and the outer wall of the guide rod 70. Specifically, a connecting seat 12 is embedded on the lower surface of the bottom plate 10. The connecting seat 12 penetrates the bottom plate 10 upward. The first receiving groove 11 is provided on the upper surface of the connecting seat 12.

[0033] For the convenience of setting, in this embodiment, the guide rod 70 is located outside the inclined ejector 60. Specifically, when viewed from the inclined ejector slider 50, the first rotating shaft 61 is located at the lower end of the inclined ejector slider 50, and the guide rod 70 penetrates the higher end of the inclined ejector slider 50. Further, a second receiving groove 51 for receiving the lower end of the inclined ejector 60 is provided at the lower end of the inclined ejector slider 50. There is a gap between the groove wall of the second receiving groove 51 and the outer wall of the inclined ejector 60.

[0034] In this embodiment, each arc-shaped injection molding part 1 has two symmetrically arranged clamping grooves 2 on the left and right. Therefore, there are also two sets of inclined ejectors 60 and guide rods 70, which are symmetrically arranged on the left and right.

[0035] The above embodiments are only used to illustrate the technical concept and features of the present invention. The purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An injection mold with a downward inclined core structure, comprising: A bottom plate; An upper template, which is arranged above the bottom plate. In the middle of the upper surface of the upper template, there is an upper mold core for forming a part of the inner wall of an arc-shaped injection molded part with a card slot. A guide block is embedded in the lower surface of the upper template; A top plate, which is arranged between the bottom plate and the upper template and can move up and down; An inclined core base, which is fixedly connected to the upper surface of the top plate. An inclined chute is formed on the upper surface of the inclined core base, and the extending direction of the inclined chute is parallel to the direction in which the card slot penetrates through the arc-shaped injection molded part; An inclined core slider, which is slidably arranged in the inclined chute; An inclined core, the upper end of which penetrates through the upper template and the upper mold core for forming the other part of the inner wall of the arc-shaped injection molded part and the card slot. The middle part of the inclined core slidably penetrates through the guide block, and the lower end of the inclined core is rotatably connected to the inclined core slider; It is characterized in that: The injection mold with a downward inclined core structure further includes a guide rod parallel to the inclined core. The upper end of the guide rod is connected to the guide block, the middle part of the guide rod slidably penetrates through the inclined core slider, and the lower end of the guide rod penetrates through the inclined core base and the top plate and is connected to the bottom plate; when the top plate drives the inclined core base to move upward, the inclined core slider slides obliquely along the guide rod, pulling the lower end of the inclined core to slide obliquely to share the force on the lower end of the inclined core.

2. The injection mold with a downward inclined roof structure according to claim 1, characterized in that: The lower end of the inclined core is rotatably connected to the inclined core slider through a first rotating shaft extending in the front-rear direction.

3. The injection mold with a downward inclined ejector pin structure according to claim 2, wherein: The upper end of the guide rod is rotatably connected to the guide block through a second rotating shaft, and the lower end of the guide rod is rotatably connected to the bottom plate through a third rotating shaft. The second rotating shaft and the third rotating shaft are both parallel to the first rotating shaft.

4. The injection mold with a downward inclined top structure according to claim 3, characterized in that: A receiving hole for receiving the upper end of the guide rod is formed on the guide block. The receiving hole penetrates through the guide block in the up-down direction, and there is a gap between the inner wall of the receiving hole and the outer wall of the guide rod.

5. The injection mold with a downward inclined ejector pin structure according to claim 3, wherein: A first receiving groove for receiving the lower end of the guide rod is formed on the upper surface of the bottom plate. There is a gap between the groove wall of the first receiving groove and the outer wall of the guide rod.

6. The injection mold with a downward inclined top structure according to claim 5, characterized in that: A connecting seat is embedded in the lower surface of the bottom plate. The connecting seat penetrates through the bottom plate upward, and the first receiving groove is formed on the upper surface of the connecting seat.

7. The injection mold with a downward inclined ejector pin structure according to claim 3, characterized in that: A first fitting hole for passing through the guide rod is formed on the inclined core base, and a second fitting hole for passing through the guide rod is formed on the top plate. There are gaps between the inner walls of the first fitting hole, the second fitting hole and the outer wall of the guide rod.

8. The injection mold with a downward inclined ejector pin structure according to claim 7, characterized in that: The first fitting hole penetrates through the inclined core base in the up-down direction, and the second fitting hole penetrates through the top plate in the up-down direction.

9. The injection mold with a downward inclined ejector pin structure according to claim 2, characterized in that: The first rotating shaft is located at the lower end of the inclined core slider, and the guide rod penetrates through the higher end of the inclined core slider.

10. The injection mold with a downward inclined top structure according to claim 9, characterized in that: A second receiving groove for receiving the lower end of the inclined core is formed at the lower end of the inclined core slider. There is a gap between the groove wall of the second receiving groove and the outer wall of the inclined core.

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