Multi-angle pitched roof mechanism of plastic chair injection mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a multi-angle pitched roof mechanism of a plastic chair injection mold. The plastic chair ejection mechanism comprises an ejection bottom plate, and a plastic chair forming module is arranged on the ejection bottom plate. In the injection molding process, the molding part on the plastic chair molding module is used for molding a plastic part, the tops of the first end part inclined ejection piece and the second end part inclined ejection piece are used for assisting in molding structures at the two ends of the plastic part, and the inclined ejection positioning connecting piece is used for connecting and fixing the first end part inclined ejection piece, the second end part inclined ejection piece and the middle straight ejection piece. The first end inclined ejection piece and the middle straight ejection piece are kept in an inclined ejection state all the time, after injection molding is completed, multi-angle inclined ejection is conducted through the first end inclined ejection piece and the middle straight ejection piece, straight ejection is completed through the second end inclined ejection piece, the structure that multi-angle inclined ejection is matched with straight ejection is adopted, multi-direction synchronous ejection of a plastic part is completed, the ejection area is large, and the ejection efficiency is high. And the ejection range is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a multi-angle inclined ejector mechanism of a plastic chair injection mold. Background Art

[0002] Plastic chairs are generally made by one-step injection molding using plastic molds. They have the characteristics of fast processing speed, low cost, and recyclability. They are widely used in restaurants, conference rooms, homes, and other scenes. At present, during the ejection process of plastic chair molds, due to the shape of the plastic chair, the straight ejector structure is easy to damage the bottom wall of the plastic part, and it will get stuck during demolding. Therefore, it is urgent to design a multi-angle inclined ejector structure that uses a multi-angle inclined ejector combined with a straight ejector structure to complete the multi-directional synchronous ejection of plastic parts, with a large ejection area and a wide ejection range.

[0003] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses a plastic seat injection mold [application number: 202220144761.4], which includes a movable mold mechanism, a fixed mold mechanism and an oblique core pulling mechanism. The oblique core pulling mechanism is located on the fixed mold mechanism, and the fixed mold mechanism includes a fixed mold cavity plate. The oblique core pulling mechanism includes an inclined slider, a horizontal slider and a first cylinder. The inclined slider and the horizontal slider are both slidably connected in the fixed mold cavity plate. The sliding direction of the inclined slider is inclined, and the sliding direction of the horizontal slider is horizontally set. The cylinder body of the first cylinder is installed on the outer wall of the fixed mold cavity plate and the piston rod is connected to the horizontal slider. The first cylinder is used to drive the horizontal slider to translate. The side of the translation slider away from the first cylinder is slidably engaged with the inclined slider. The sliding direction of the translation slider relative to the inclined slider and the sliding direction of the inclined slider relative to the fixed mold cavity plate are perpendicular to each other. Summary of the invention

[0004] The utility model aims to solve the above problems and provides a multi-angle inclined ejector mechanism for a plastic chair injection mold.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multi-angle inclined ejector mechanism for a plastic chair injection mold comprises an ejection base plate, a plastic chair molding module is arranged on the ejection base plate, the plastic chair molding module has a molding portion and a clamping portion, a first end inclined ejector piece, a second end inclined ejector piece and a middle straight ejector piece are arranged in the plastic chair molding module, the first end inclined ejector piece, the second end inclined ejector piece and the middle straight ejector piece are arranged alternately, and an inclined ejector positioning connector for positioning and connecting the first end inclined ejector piece, the second end inclined ejector piece and the middle straight ejector piece is arranged between the ejection base plate and the plastic chair molding module.

[0007] In the multi-angle tilting mechanism of the above-mentioned plastic chair injection mold, the first end tilting piece includes two first tilting connecting rods arranged in the plastic chair molding module, and a first tilting molding block is provided on the top of the first tilting connecting rod, and the first tilting molding block corresponds to the position of the molding part.

[0008] In the multi-angle inclined top mechanism of the above-mentioned plastic chair injection mold, the top of the first inclined top molding block has a first auxiliary molding surface, and the first auxiliary molding surface is in contact with the molding part.

[0009] In the multi-angle tilting mechanism of the above-mentioned plastic chair injection mold, the second end tilting piece includes two second tilting connecting rods arranged in the plastic chair molding module, and a second tilting molding block is provided on the top of the second tilting connecting rod, and the second tilting molding block corresponds to the position of the molding part.

[0010] In the multi-angle inclined top mechanism of the above-mentioned plastic chair injection mold, the top of the second inclined top molding block has a second auxiliary molding surface, and the second auxiliary molding surface is in contact with the molding part.

[0011] In the multi-angle inclined top mechanism of the above-mentioned plastic chair injection mold, the middle straight top piece includes a plurality of straight top plates arranged in the plastic chair molding module, and the straight top plates, the first inclined top molding block and the second inclined top molding block are staggered.

[0012] In the multi-angle inclined ejector mechanism of the above-mentioned plastic chair injection mold, the inclined ejector positioning connecting member includes a first inclined pad and a second inclined pad arranged between the ejection base plate and the plastic chair molding module, and the first inclined ejector connecting rod passes through the first inclined pad and the second inclined pad in sequence.

[0013] In the multi-angle inclined ejector mechanism of the above-mentioned plastic chair injection mold, the first inclined pad and the second inclined pad are arranged obliquely, a pad alignment portion is provided in the ejection bottom plate, and the second inclined pad fits the pad alignment portion.

[0014] In the multi-angle inclined top mechanism of the above-mentioned plastic chair injection mold, the pad alignment portion includes a sunken groove and an inclined convex body, the second inclined pad extends into the sunken groove at one end close to the straight top plate, and the second inclined pad is fitted with the inclined convex body at one end away from the straight top plate.

[0015] In the multi-angle inclined ejector mechanism of the above-mentioned plastic chair injection mold, a plurality of clamping and embedding blocks are also provided on the ejection bottom plate.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] During the injection molding process of the utility model, the molding part on the plastic chair molding module is used to mold the plastic part, the first end inclined ejector piece and the top of the second end inclined ejector piece are used to assist in molding the structures at both ends of the plastic part, and the inclined ejector positioning connector is used to connect and fix the first end inclined ejector piece, the second end inclined ejector piece and the middle straight ejector piece, so that the first end inclined ejector piece and the middle straight ejector piece always maintain an inclined ejection state. After the injection molding is completed, multi-angle inclined ejection is performed through the first end inclined ejector piece and the middle straight ejector piece, and straight ejection is completed through the second end inclined ejector piece. The structure of multi-angle inclined ejection and straight ejection is adopted to complete the multi-directional synchronous ejection of the plastic part, and the ejection area is large and the ejection range is wide.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a partial structural schematic diagram of the utility model.

[0021] Figure 3 It is a partial structural schematic diagram of the utility model in another direction.

[0022] Figure 4 It is a schematic diagram of the structure of the ejector base plate.

[0023] In the figure: an ejection base plate 1, a plastic chair molding module 2, a molding part 3, a clamping part 4, a first end inclined ejector 5, a second end inclined ejector 6, a middle straight ejector 7, an inclined ejector positioning connector 8, a first inclined ejector connecting rod 9, a first inclined ejector molding block 10, a first auxiliary molding surface 11, a second inclined ejector connecting rod 12, a second inclined ejector molding block 13, a second auxiliary molding surface 14, a straight ejector plate 15, a first inclined pad 16, a second inclined pad 17, a pad alignment portion 18, a sunken groove 19, an inclined convex body 20, and a snap-in block 21. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 1-4As shown, a multi-angle inclined ejector mechanism of a plastic chair injection mold comprises an ejection base plate 1, on which a plastic chair molding module 2 is provided, and on which a molding portion 3 and a clamping portion 4 are provided, and inside the plastic chair molding module 2 there are provided a first end inclined ejector piece 5, a second end inclined ejector piece 6 and a middle straight ejector piece 7, wherein the first end inclined ejector piece 5, the second end inclined ejector piece 6 and the middle straight ejector piece 7 are arranged alternately, and between the ejection base plate 1 and the plastic chair molding module 2 there is provided an inclined ejector positioning connector 8 for positioning and connecting the first end inclined ejector piece 5, the second end inclined ejector piece 6 and the middle straight ejector piece 7.

[0026] In this embodiment, during the injection molding process, the molding part 3 on the plastic chair molding module 2 is used to mold the plastic part, the top of the first end inclined top piece 5 and the second end inclined top piece 6 are used to assist in molding the structure at both ends of the plastic part, and the inclined top positioning connecting piece 8 is used to connect and fix the first end inclined top piece 5, the second end inclined top piece 6 and the middle straight top piece 7, so that the first end inclined top piece 5 and the middle straight top piece 7 always maintain the inclined top state. After the injection molding is completed, multi-angle inclined top is performed through the first end inclined top piece 5 and the middle straight top piece 7, and straight top is completed through the second end inclined top piece 6. The structure of multi-angle inclined top and straight top is adopted to complete the multi-directional synchronous ejection of the plastic part, and the ejection area is large and the ejection range is wide.

[0027] Combination Figure 1-4 As shown, the first end inclined top member 5 includes two first inclined top connecting rods 9 arranged in the plastic chair molding module 2, and a first inclined top molding block 10 is provided on the top of the first inclined top connecting rod 9, and the position of the first inclined top molding block 10 corresponds to that of the molding part 3.

[0028] Specifically, after the injection molding is completed, the first inclined top connecting rod 9 is moved, and the first inclined top forming block 10 is driven by the first inclined top connecting rod 9 to perform inclined top molding on the end of the plastic part.

[0029] Combination Figure 2 , Figure 3 As shown, the top of the first sloping top forming block 10 has a first auxiliary forming surface 11 , and the first auxiliary forming surface 11 is in contact with the forming portion 3 .

[0030] In this embodiment, during injection molding, the first auxiliary molding surface 11 is used to assist in molding the end structure of the plastic part.

[0031] The second end inclined top piece 6 includes two second inclined top connecting rods 12 arranged in the plastic chair molding module 2. The top of the second inclined top connecting rod 12 is provided with a second inclined top molding block 13. The second inclined top molding block 13 corresponds to the position of the molding part 3.

[0032] In this embodiment, after the injection molding is completed, the second inclined top connecting rod 12 is moved, and the second inclined top forming block 13 is driven by the second inclined top connecting rod 12 to perform inclined top on the end of the plastic part.

[0033] Combination Figure 3 As shown, the second sloping top forming block 13 has a second auxiliary forming surface 14 on the top, and the second auxiliary forming surface 14 is in contact with the forming portion 3 .

[0034] In this embodiment, during injection molding, the second auxiliary molding surface 14 is used to assist in molding the end structure of the plastic part.

[0035] The middle straight top member 7 includes a plurality of straight top plates 15 arranged in the plastic chair forming module 2, and the straight top plates 15, the first inclined top forming block 10 and the second inclined top forming block 13 are arranged alternately.

[0036] In this embodiment, after the injection molding is completed, the middle part of the plastic part is ejected obliquely through the straight ejector plate 15, so that the top surface area is large and the ejection range is wide.

[0037] The inclined ejection positioning connecting member 8 includes a first inclined pad 16 and a second inclined pad 17 disposed between the ejection bottom plate 1 and the plastic chair forming module 2 , and the first inclined ejection connecting rod 9 passes through the first inclined pad 16 and the second inclined pad 17 in sequence.

[0038] In this embodiment, the first inclined pad 16 and the second inclined pad 17 are used to connect the first inclined top connecting rod 9 and the straight top plate 15 to control the inclination of the first inclined top connecting rod 9 and the straight top plate 15 and ensure the accuracy of the inclined top.

[0039] Combination Figure 3-4 As shown, the first inclined pad 16 and the second inclined pad 17 are arranged obliquely, a pad alignment portion 18 is provided in the ejection base plate 1 , and the second inclined pad 17 is fitted with the pad alignment portion 18 .

[0040] In this embodiment, the pad aligning portion 18 is used to fix the second inclined pad 17 to ensure that the second inclined pad 17 and the first inclined pad 16 are in an inclined state.

[0041] Combination Figure 2 , Figure 4 As shown, the pad alignment portion 18 includes a sunken groove 19 and an inclined convex body 20 , and the end of the second inclined pad 17 close to the straight top plate 15 extends into the sunken groove 19 , and the end of the second inclined pad 17 away from the straight top plate 15 fits with the inclined convex body 20 .

[0042] In this embodiment, the sunken groove 19 and the inclined protrusion 20 are used to fix the second inclined pad 17 to ensure that the second inclined pad 17 and the first inclined pad 16 are in an inclined state.

[0043] Combination Figure 4 As shown, the ejection bottom plate 1 is further provided with a plurality of snap-fitting blocks 21 .

[0044] In this embodiment, the snap-fitting block 21 facilitates snap-fitting and fixing of the plastic chair forming module 2 .

[0045] The working principle of the utility model is:

[0046] During the injection molding process, the molding part 3 on the plastic chair molding module 2 is used to mold the plastic part, the first auxiliary molding surface 11 and the top of the second auxiliary molding surface 14 are used to assist in molding the structure at both ends of the plastic part, and the first inclined pad 16 and the second inclined pad 17 are used to connect the first inclined top connecting rod 9 and the straight top plate 15 to control the inclination of the first inclined top connecting rod 9 and the straight top plate 15 to ensure the accuracy of the inclined top.

[0047] After the injection molding is completed, the first inclined ejector connecting rod 9 is moved, and the first inclined ejector forming block 10 is driven by the first inclined ejector connecting rod 9 to perform inclined ejection on the end of the plastic part. The second inclined ejector connecting rod 12 is moved, and the second inclined ejector forming block 13 is driven by the second inclined ejector connecting rod 12 to perform inclined ejection on the end of the plastic part. The middle part of the plastic part is ejected by the straight ejector plate 15. The structure of multi-angle inclined ejector and straight ejector is adopted to complete the multi-directional synchronous ejection of the plastic part, with a large ejection area and a wide ejection range.

[0048] The sunken groove 19 and the inclined protrusion 20 are used to fix the second inclined pad 17 to ensure that the second inclined pad 17 and the first inclined pad 16 are in an inclined state. The clamping block 21 is convenient for clamping and fixing the plastic chair forming module 2.

[0049] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0050] Although this article uses more terms such as ejector bottom plate 1, plastic chair molding module 2, molding part 3, mold clamping part 4, first end inclined ejector 5, second end inclined ejector 6, middle straight ejector 7, inclined ejector positioning connector 8, first inclined ejector connecting rod 9, first inclined ejector molding block 10, first auxiliary molding surface 11, second inclined ejector connecting rod 12, second inclined ejector molding block 13, second auxiliary molding surface 14, straight ejector plate 15, first inclined pad 16, second inclined pad 17, pad alignment part 18, sunken groove 19, inclined convex body 20, and snap-in block 21, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A multi-angle inclined ejector mechanism for a plastic chair injection mold, comprising an ejector bottom plate (1), characterized in that: The ejection base plate (1) is provided with a plastic chair molding module (2), and the plastic chair molding module (2) has a molding portion (3) and a clamping portion (4). The plastic chair molding module (2) is provided with a first end inclined top piece (5), a second end inclined top piece (6) and a middle straight top piece (7). The first end inclined top piece (5), the second end inclined top piece (6) and the middle straight top piece (7) are arranged alternately. An inclined top positioning connector (8) for positioning and connecting the first end inclined top piece (5), the second end inclined top piece (6) and the middle straight top piece (7) is provided between the ejection base plate (1) and the plastic chair molding module (2).

2. The multi-angle inclined lift mechanism of the plastic chair injection mold according to claim 1 is characterized in that: The first end inclined top member (5) comprises two first inclined top connecting rods (9) arranged in the plastic chair forming module (2), and a first inclined top forming block (10) is provided on the top of the first inclined top connecting rod (9), and the position of the first inclined top forming block (10) corresponds to that of the forming part (3).

3. The multi-angle inclined lift mechanism of the plastic chair injection mold according to claim 2 is characterized in that: The top of the first sloping top forming block (10) is provided with a first auxiliary forming surface (11), and the first auxiliary forming surface (11) is in contact with the forming portion (3).

4. The multi-angle inclined lift mechanism of the plastic chair injection mold according to claim 3, characterized in that: The second end inclined top member (6) comprises two second inclined top connecting rods (12) arranged in the plastic chair forming module (2), and a second inclined top forming block (13) is provided on the top of the second inclined top connecting rod (12), and the position of the second inclined top forming block (13) corresponds to that of the forming part (3).

5. The multi-angle inclined lift mechanism of the plastic chair injection mold according to claim 4, characterized in that: The second sloping top forming block (13) has a second auxiliary forming surface (14) at the top, and the second auxiliary forming surface (14) is in contact with the forming portion (3).

6. The multi-angle inclined lift mechanism of the plastic chair injection mold according to claim 5, characterized in that: The middle straight top piece (7) comprises a plurality of straight top plates (15) arranged in the plastic chair forming module (2), wherein the straight top plates (15), the first inclined top forming block (10) and the second inclined top forming block (13) are arranged in an alternating manner.

7. The multi-angle inclined lift mechanism of the plastic chair injection mold according to claim 6, characterized in that: The inclined top positioning connecting member (8) comprises a first inclined pad (16) and a second inclined pad (17) which are arranged between the ejection base plate (1) and the plastic chair forming module (2), and the first inclined top connecting rod (9) passes through the first inclined pad (16) and the second inclined pad (17) in sequence.

8. The multi-angle inclined lift mechanism of the plastic chair injection mold according to claim 7, characterized in that: The first inclined pad (16) and the second inclined pad (17) are arranged obliquely, a pad alignment portion (18) is provided inside the ejection bottom plate (1), and the second inclined pad (17) fits the pad alignment portion (18).

9. The multi-angle inclined lift mechanism of the plastic chair injection mold according to claim 8, characterized in that: The pad alignment portion (18) comprises a sunken groove (19) and an inclined convex body (20); one end of the second inclined pad (17) close to the straight top plate (15) extends into the sunken groove (19); and one end of the second inclined pad (17) away from the straight top plate (15) fits with the inclined convex body (20).

10. The multi-angle inclined lift mechanism of the plastic chair injection mold according to claim 9, characterized in that: The ejection bottom plate (1) is also provided with a plurality of snap-fitting blocks (21).

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