Inclined top demolding structure in micro space

Abstract

The invention relates to a micro-space pitched roof demolding structure which comprises a lower mold plate and a lower mold core. An upper mold plate and an upper mold core; the side pulling mechanisms are arranged on the two sides of the lower die plate, and the ends of side pulling rods of the side pulling mechanisms are provided with second profiling. The bottoms of the pitched roofs are connected with a sliding seat arranged on the top plate, the tops of the pitched roofs obliquely penetrate through the lower mold plate, and the planes of the tops of the pitched roofs form a supporting surface for the side pulling rod to move; the third mold is arranged on the top plane of the pitched roof, and a groove is inwards formed in the outer side wall of the third mold; the forming part is vertically arranged in the lower mold core, and the top of the forming part is provided with a fourth profile forming a product hollow structure; after injection molding is completed, the upper mold core moves upwards, the product is placed on the supporting faces of the tops of the inclined ejectors, then the two oppositely-arranged inclined ejectors move upwards in an inclined mode, the bottoms of the inclined ejectors are close to each other along the sliding base, the tops of the inclined ejectors are close to each other, the groove in the third profiling position is separated from the protruding part, and meanwhile the product is ejected upwards by the inclined ejectors. And subsequent grabbing of a manipulator is facilitated, and product demolding is achieved.

Description

Technical Field

[0001] The invention relates to the field of molds, in particular to a micro-space inclined top demoulding structure. Background Art

[0002] See also Figure 1 、 2 , which is the injection molded product required for the application. This product is used to assemble hearing aids. The lower part of the inner wall of the product in the figure is protruded with a protrusion, which is used to increase the firmness during assembly;

[0003] However, for this product, it is difficult to demould the protruding part formed on the inner wall of the product;

[0004] In summary, how to achieve demolding of the inner wall protrusions in the product after molding has become an urgent problem that researchers in this field need to solve. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to realize the demoulding of the inner wall protrusion of the product after molding.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The present invention is a micro-space inclined top demolding structure, comprising: a lower template, the top of which is provided with at least one lower mold core; an upper template, the bottom of which is provided with an upper mold core matching the lower mold core; a side withdrawal mechanism, which is provided on both sides of the lower template, and the ends of its side withdrawal rods constitute a first profiling of the lower outer wall and the middle outer wall of the product; the bottom of the upper mold core constitutes a second profiling of the upper outer wall and the upper inner wall of the product; at least one pair of inclined tops, the bottoms of which are connected to a sliding seat provided on the top plate, the tops of which obliquely pass through the lower template, and the top planes of which form a support surface for the movement of the side withdrawal rods; a third profiling, which is provided at the top plane of the inclined tops, the outer side walls of which are provided with grooves inwardly, and the grooves are used for injection molding the protrusions of the inner wall of the product; a molding part, which is vertically provided in the lower mold core and located between the two inclined tops, and the top of which has a fourth profiling constituting the middle structure of the product.

[0008] Furthermore, the side-pull-out mechanism also includes: a first wedge-shaped piece for connecting the end of the side-pull-out rod, and the first wedge-shaped piece and the lower template realize linear motion through the cooperation of the slide groove and the slide rail; a second wedge-shaped piece, which is arranged in the upper template and forms an inclined surface with the first wedge-shaped piece; when the upper template and the lower template are closed, the two second wedge-shaped pieces move downward, driving the two first wedge-shaped pieces to move laterally relative to each other.

[0009] Furthermore, the first contour includes: the end of the side puller rod is opened inward and forms a first arcuate surface and a second arcuate surface arranged up and down, the first arcuate surface protrudes from the second arcuate surface, and a step surface is formed between the first arcuate surface and the second arcuate surface.

[0010] Furthermore, positioning grooves are provided inwardly on both sides of the end surface of one of the side pull-out rods, and protrusions matching the positioning grooves are provided on both sides of the end surface of the other side pull-out rod opposite to the side pull-out rod to form a plug-in positioning.

[0011] Furthermore, the second profiling includes:

[0012] The bottom wall of the upper mold core is provided with a cavity; a plurality of outer teeth are provided at equal intervals on both sides of the cavity, and inner teeth are provided correspondingly on the inner sides of the plurality of outer teeth.

[0013] Furthermore, the inner side surface of the third profiling is coplanar with the inner side surface of the inclined top; the third profiling includes: a third curved surface and a fourth curved surface arranged up and down, the fourth curved surface protruding from the third curved surface, and a step surface is formed between the third curved surface and the fourth curved surface; the fourth curved surface is concavely provided with the groove.

[0014] Furthermore, both sides of the molded part are inclined surfaces, and the inclined surfaces and the corresponding inclined top side surfaces form a surface guide.

[0015] Furthermore, the fourth profiling includes: a rectangular body and a trapezoidal body arranged above and below, the trapezoidal body is connected to the molded part; the trapezoidal inclined surfaces on both sides of the trapezoidal body match the lower part of the inner side surface of the inner tooth portion; and there is a molding gap between the top of the rectangular body and the top of the mold cavity.

[0016] The beneficial effects of the present invention are as follows: the present invention is a micro-space inclined top demolding structure. After the injection molding is completed, the upper mold core moves upward, the slider slides to both sides, and the molded product is placed on the supporting surface of the top of the inclined top. Then the top plate is pushed up, and the two relatively arranged inclined tops move obliquely upward, so that the bottoms of the inclined tops approach each other along the slide seat, and the tops of the inclined tops also approach each other. The groove at the third profiling part is disengaged from the protrusion. At the same time, the product is lifted up by the inclined top, which is convenient for subsequent robot grasping and realizes the demolding of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] Figure 1 It is a three-dimensional picture of the product;

[0019] Figure 2 It is a three-dimensional picture of the product from another perspective;

[0020] Figure 3 It is a longitudinal cross-sectional view of the product;

[0021] Figure 4 It is a transverse cross-sectional view of the product;

[0022] Figure 5 It is a structural diagram of the mold;

[0023] Figure 6 It is a schematic diagram of the internal structure of the mold;

[0024] Figure 7 It is a cross-sectional view of the mold;

[0025] Figure 8 It is a cross-sectional view of the side push mechanism, upper die core, lower die core, inclined ejector, molded parts, and product coordination;

[0026] Figure 9 It is a structural diagram of the top of the sloping roof;

[0027] Figure 10 It is a structural diagram of the side draw rod;

[0028] Figure 11 It is the coordination diagram of the draw rods on both sides;

[0029] Figure 12 This is a schematic diagram of the bottom structure of the upper mold core;

[0030] Figure 13 yes Figure 12 A magnified view of point A;

[0031] Figure 14 It is a structural diagram of the molded part;

[0032] Figure 15 It is a structural diagram of the product being lifted up;

[0033] Figure 16 yes Figure 15 Enlarged view of point B. DETAILED DESCRIPTION

[0034] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0035] 1, 2, 3, and 4 are images of the product to be injection molded in this embodiment. Product 01 is a hearing aid component and has the following features:

[0036] 1. The lower part 011 of the outer wall protrudes and the middle part 012 of the outer wall, forming a product step surface 014;

[0037] 2. A plurality of first tooth pieces 015 are arranged at equal intervals on both sides of the upper portion 013 of the outer wall. A second tooth piece 016 is provided on the inner side of each first tooth piece 015. The second tooth piece 016 is located at the top 017 of the inner wall. The gap between two adjacent second tooth pieces 016 passes through the product from top to bottom.

[0038] 3. The middle portion 018 of the inner wall protrudes from the lower portion 019 of the inner wall, forming a step surface 020 therebetween; protrusions 021 are provided on opposite sides of the lower portion 019 of the inner wall;

[0039] 4. A rib 022 is provided between the plurality of second teeth 016 located at the top of the inner wall 017 and opposite to each other;

[0040] 5. The bottom of each second tooth piece 016 is flat, and the second tooth piece 016 has a structure that is narrow at the bottom and wide at the top.

[0041] In order to form a finished product with the above five characteristics, such as Figure 5 、 6 As shown in Figures 7 and 8, this embodiment discloses a micro-space inclined ejection structure. The mold 1 includes conventional components such as an upper fixing plate 11, a lower fixing plate 12, a supporting plate 13, an upper mold plate 14, a lower mold plate 15, and a top plate 16. The mold is a 1-cavity 4-mold structure, that is, it includes four upper mold cores 17 and lower mold cores 18 arranged in pairs.

[0042] Due to feature 1 of the product, this embodiment uses a side-drawing mechanism 19 for forming;

[0043] Due to the feature 3 of the product, this embodiment adopts a sloping roof structure for molding, such as Figure 8 As shown, this embodiment has four groups of inclined tops 20 arranged in pairs, each group of inclined tops 20 consists of two symmetrical and obliquely arranged inclined tops. The inclined tops 20 obliquely pass through the support plate 13, the lower mold plate 15, and the lower mold core 18, and the tops are located in the mold cavity. The bottoms of the inclined tops 20 are connected to the slide 21 on the top plate 16. A groove 23 is provided at the third profiling 22. In this way, during the injection molding process, the groove 23 is used to form the three protrusions 021 of the product feature.

[0044] like Figure 15 、 16 As shown, after the injection molding is completed, the upper mold core 17 moves upward, and the molded product is placed on the supporting surface 24 at the top of the inclined top 20. Then the top plate 16 is pushed up, and the two relatively arranged inclined tops 20 move obliquely upward, so that the bottoms of the inclined tops 20 are close to each other along the slide 21, and the tops of the inclined tops 20 are also close to each other, so that the groove 23 at the third profiling 22 is separated from the protrusion 021. At the same time, the product is pushed upward by the inclined top 20, which is convenient for the subsequent robot to grasp and realize the demolding of the product.

[0045] In some embodiments, as Figure 8 As shown, in order to illustrate the specific structure of the side withdrawal mechanism 19, the side withdrawal mechanism used in this embodiment also includes: a first wedge-shaped member 191 for connecting the end of the side withdrawal rod 193, and the first wedge-shaped member 191 and the lower template 15 realize linear motion through the cooperation of the wire groove and the wire rail; a second wedge-shaped member 192, which is arranged in the upper template 14 and forms an inclined surface with the first wedge-shaped member 191; when the upper template 14 and the lower template 15 are closed, the two second wedge-shaped members 192 move downward, driving the two first wedge-shaped members 191 to move horizontally relative to each other.

[0046] In this embodiment, the side withdrawal mechanism 19 is arranged in pairs on both sides of the lower template 15, and one end of the side withdrawal rod 193 is located at the mold cavity. The first profiling 194 formed at the end is used to mold the lower part 011 of the outer wall and the middle part 012 of the outer wall in the product feature 1; the other end of the side withdrawal rod 193 is connected to the first wedge 191, and the second wedge 192 is connected to the first wedge 191 through an inclined guide. The top of the second wedge 192 is suitable for contacting the upper template 14; when the upper template 14 and the lower template 15 are closed, the two second wedges 192 move downward, driving the two first wedges 191 to move laterally relative to each other, so as to ensure that the side withdrawal rod 193 does not move outward during the injection molding process;

[0047] In addition, the end of the side pull rod 193 constituting the first profile 194 is always supported on the support surface 24 of the inclined top 20 during the lateral movement, which can ensure that the stroke of the side pull rod 193 is stable and accurate.

[0048] In some embodiments, as Figure 10 As shown, in order to illustrate the specific structure of the first profiling, the present invention adopts a first profiling 194 including: the end of the side pull rod 193 is opened inward, and is formed into a first arc surface 195 and a second arc surface 196 arranged up and down, the first arc surface 195 protrudes from the second arc surface 196, and a step surface 197 is formed between the first arc surface 195 and the second arc surface 196;

[0049] In this embodiment, the two first curved surfaces 196 in the two oppositely arranged side pull rods 193 together form the middle part 012 of the outer wall in product feature 1, the two second curved surfaces 196 together form the lower part 011 of the outer wall in product feature 1, and the stepped surface 197 constitutes the product stepped surface 014 in product feature 1.

[0050] In some embodiments, as Figure 11As shown, in order to ensure that the oppositely arranged side draw rods can be accurately inserted and positioned, the present invention adopts that positioning grooves 198 are opened inwardly on both sides of the end surface of one of the side draw rods 193, and protrusions 199 matching the positioning grooves 198 are protruded on both sides of the end surface of the other side draw rod 193 opposite to the side draw rod 193;

[0051] In this embodiment, when the two relatively arranged pull rods move relative to each other, the end faces of the ends of the two pull rods 193 contact each other. At this time, the protrusion 199 is inserted into the positioning groove 192 to ensure the precise positioning between the two pull rods 193 and no offset occurs between the two pull rods 193.

[0052] In some embodiments, as Figure 12 、 13 As shown, in order to form the structure of feature 2 of the product, the present invention adopts a second profiling 3 comprising: a cavity 31 formed on the bottom wall of the upper mold core 17; a plurality of outer teeth 32 are provided on both sides of the cavity 31 at equal intervals, and inner teeth 33 are provided on the inner sides of the plurality of outer teeth 32;

[0053] In this embodiment, the gaps between the multiple external teeth 32 at the bottom of the upper mold core are used to form the first tooth piece 015 in the product feature 2. Similarly, the gaps between the multiple internal teeth 33 at the bottom of the upper mold core 17 are used to form the second tooth piece 016 in the product feature 2. The internal teeth 33 are inserted vertically so that the molded product 001 is set up to be through-connected from top to bottom.

[0054] In some embodiments, as Figure 9 As shown, in order to form the step surface 020 between the inner wall middle portion 019 and the inner wall lower portion 018 in feature 2 of the molding product, the present invention adopts the inner side surface of the third profiling 22 being coplanar with the inner side surface of the inclined top 20; the third profiling 22 includes: a third curved surface 25 and a fourth curved surface 26 arranged vertically, the fourth curved surface 26 protruding from the third curved surface 25, and a step surface 27 formed between the third curved surface 25 and the fourth curved surface 26; the fourth curved surface 26 is concavely provided with the groove 23 inwardly;

[0055] In this embodiment, the inner side surface of the third profiling 22 is coplanar with the inner side surface of the inclined top, so that the third profiling 22 can be in surface contact with the inclined top 20 and the molding part 4, and the product after injection molding has a hollow structure at this location; the third curved surface 25 is used to form the middle part 019 of the inner wall in the product feature 2, the fourth curved surface 26 is used to form the lower part 018 of the inner wall in the product feature 2, and the step surface 27 is used to form the product step surface 020 in the product feature 2.

[0056] In some embodiments, as Figure 14As shown, in order to realize the upward movement of the inclined top, this embodiment adopts the inclined surfaces 41 on both sides of the forming part 4, and the inclined surfaces 41 and the corresponding side surfaces of the inclined top 20 form a surface guide;

[0057] In this embodiment, the forming part 4 is located between the two inclined tops 20. The forming part 4 is a structure that is narrow at the top and wide at the bottom. Therefore, the two sides of the forming part are inclined surfaces 41. The inclined surfaces 41 are in surface contact with the inclined tops 20, thereby realizing the oblique movement of the inclined tops 20.

[0058] In some embodiments, as Figure 14 As shown, in order to form the structure of product features 4 and 5, the present invention adopts the fourth profiling 42 comprising: a rectangular body 43 and a trapezoidal body 44 arranged above and below, the trapezoidal body 44 being connected to the forming part 4; the trapezoidal inclined surfaces on both sides of the trapezoidal body 44 match the lower portion of the inner side surface of the inner tooth portion 33;

[0059] In this embodiment, there is a molding gap between the rectangular body 43 and the mold cavity 31 of the upper mold core 17, and the molding gap is used to mold the rib 022 in product feature 4;

[0060] The trapezoidal body 44 is a structure that is narrow at the top and wide at the bottom. The inner inclined surface at the bottom of the inner tooth portion 33 is in surface contact with the outer inclined surface of the trapezoidal body 44. Thus, the second tooth piece 016 is a sheet-like structure that is narrow at the bottom and wide at the top.

[0061] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A small space inclined top demoulding structure, characterized in that: include: The lower template has at least one lower mold core provided on the top; An upper mold plate, the bottom of which is provided with an upper mold core that matches the lower mold core; A side-drawing mechanism is provided on both sides of the lower template, and the ends of the side-drawing rods form the first contours of the lower and middle parts of the outer wall of the product; The bottom of the upper mold core forms a second contour of the upper portion of the outer wall and the upper portion of the inner wall of the product; At least one pair of inclined roofs, the bottoms of which are connected to the slide seat provided on the top plate, the tops of which are inclined to pass through the lower template, and the top planes of which form the support surface for the movement of the side draw rods; A third profiling member is provided at the top plane of the inclined roof, and an outer sidewall thereof is provided with a groove inwardly, and the groove is used for injection molding a protrusion constituting the inner wall of the product; The forming part is vertically arranged in the lower mold core and located between the two inclined tops, and its top has a fourth profiling forming the middle structure of the product.

2. A micro-space inclined top demoulding structure according to claim 1, characterized in that: The side-drawing mechanism also includes: A first wedge-shaped member for connecting the end of the side draw rod, wherein the first wedge-shaped member and the lower template achieve linear motion through the cooperation of the slide groove and the slide rail; a second wedge-shaped member, which is disposed in the upper template and forms an inclined surface with the first wedge-shaped member; When the upper template and the lower template are closed, the two second wedge-shaped members move downward, driving the two first wedge-shaped members to move laterally relative to each other.

3. The micro-space inclined top demoulding structure according to claim 1, characterized in that: The first profiling comprises: The end of the side pull rod is opened inward and forms a first arc surface and a second arc surface arranged up and down. The first arc surface protrudes from the second arc surface, and a step surface is formed between the first arc surface and the second arc surface.

4. The micro-space inclined top demoulding structure according to claim 3, characterized in that: Positioning grooves are provided inwardly on both sides of the end surface of one of the side pull-out rods, and protrusions matching the positioning grooves are provided on both sides of the end surface of the other side pull-out rod opposite to the side pull-out rod to form plug-in positioning.

5. The micro-space inclined top demoulding structure according to claim 1, characterized in that: The second profiling comprises: The bottom wall of the upper mold core is provided with a cavity; a plurality of outer teeth are provided at equal intervals on both sides of the cavity, and inner teeth are provided correspondingly on the inner sides of the plurality of outer teeth.

6. The micro-space inclined top demoulding structure according to claim 1, characterized in that: The third contoured inner side surface is coplanar with the inner side surface of the inclined top; The third profiling comprises: A third curved surface and a fourth curved surface are arranged vertically, the fourth curved surface protrudes from the third curved surface, and a step surface is formed between the third curved surface and the fourth curved surface; The fourth arc-shaped surface is concavely provided with the groove.

7. The micro-space inclined top demoulding structure according to claim 1, characterized in that: Both sides of the forming part are inclined surfaces, and the inclined surfaces and the corresponding inclined top side surfaces form surface guides.

8. The micro-space inclined top demoulding structure according to claim 1, characterized in that: The fourth profiling comprises: A rectangular body and a trapezoidal body are arranged above and below, and the trapezoidal body is connected to the molded part; The trapezoidal inclined surfaces on both sides of the trapezoidal body match the lower part of the inner side surface of the inner tooth portion; There is a molding gap between the top of the rectangular body and the top of the cavity.

Images