Lateral core-pulling injection mold

Abstract

The utility model discloses a lateral core-pulling injection mold, which relates to the technical field of molds and comprises a fixed upper plate, an upper mold body fixed on the fixed upper plate, a lower mold body butted with the upper mold body, an ejection mechanism arranged on the lower mold body and a fixed lower plate fixed on the lower mold body, the upper die body is provided with an upper die core, the lower die body is provided with a lower die core, the upper die core and the lower die core are in butt joint to form a die cavity used for forming a product, the lower die core is provided with a product profiling insert used for forming a side groove of the product, and a side hole site is formed in the product profiling insert. Slide mechanisms which are oppositely arranged are arranged between the upper die body and the lower die body, each slide mechanism comprises an inclined guide column, a first guide rail, a second guide rail and a slide seat which are fixedly arranged on the upper die body, and the inclined guide columns are in sliding fit with the slide seats; the first sliding groove is formed in the slide seat, the first side insert is arranged in the first sliding groove, and the first side insert is provided with the first side hole structure, so that the forming requirement of a side hole of a product can be met while the side groove of the product is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a lateral core-pulling injection mold. Background Art

[0002] The injection molding process is widely used in many fields such as automotive parts, home appliances, and electronic products because of its high efficiency, high cost-effectiveness, and ability to produce products with complex shapes. The injection mold is a key tool used in the injection molding process. Its basic function is to inject molten plastic material into the mold cavity under high pressure, and form the desired shape after cooling and solidification. The injection mold usually consists of two parts: an upper mold and a lower mold. During injection molding, the upper mold and the lower mold are closed to form the runner system and the mold cavity of the plastic product. During injection molding, the mold is clamped on the injection molding machine, and the molten plastic is injected into the mold cavity and cooled and formed in the mold cavity. At the same time, the molten plastic is also cooled in the runner system to form a runner system condensate. After the plastic product is formed, the upper mold and the lower mold are separated, and the plastic product is ejected from the mold cavity and leaves the mold through the ejection system. Finally, the upper mold and the lower mold are closed again for the next injection molding. The entire injection molding process is carried out in a cycle.

[0003] With the development of technology, injection molding is also constantly improving. Take a product with an inner groove structure and a side hole structure as an example. Under the traditional molding demolding method, by setting two inserts with a slanted top structure in the lower mold, the two inserts gradually move upward toward the center during the demolding process, so that while the product is ejected, the two inserts respectively drive the two side inserts to gradually move inward to separate the side inserts from the side holes, thereby completing the demolding of the product. However, when faced with a product with side grooves distributed on both sides and also having a side hole structure, due to the relatively flat shape of the side grooves and the presence of a partition between the side grooves and the middle part of the product, the space of the side grooves is limited. As a result, the traditional slanted top method does not have the movement space required for slanted top, resulting in difficulty in product demolding. Therefore, based on the above problems, it is necessary to propose an improved technical solution. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: a side core-pulling injection mold, comprising a fixed upper plate, an upper mold body fixed to the fixed upper plate, a lower mold body docked to the upper mold body, an ejection mechanism provided on the lower mold body, and a fixed lower plate fixed to the lower mold body;

[0006] The upper mold body is provided with an upper mold core, and the lower mold body is provided with a lower mold core. The upper mold core and the lower mold core are connected to each other to form a mold cavity for molding a product. The lower mold core is provided with a product-shaped insert for molding a side groove of the product, and the product-shaped insert is formed with a side hole position;

[0007] A slide mechanism is provided between the upper mold body and the lower mold body, and the slide mechanism includes an inclined guide column fixedly provided on the upper mold body, a first guide rail fixedly provided on the lower mold body, a second guide rail, and a slide seat slidably engaged between the first guide rail and the second guide rail. The inclined guide column is slidably matched with the slide seat to drive the slide seat to slide toward the direction of docking with the mold cavity or separating from the mold cavity through the inclined guide column.

[0008] The slide seat is formed with a slide groove on one side end facing the mold cavity, a side insert is arranged in the slide groove, and a side hole structure corresponding to the side hole position is arranged on the end of the side insert facing the product profiling insert.

[0009] As a further solution of the present invention: after the side hole structure passes through the side hole position, an inner hole structure extending into the mold cavity is formed.

[0010] As a further solution of the present invention: the slide seat is further provided with a second slide groove, a second side insert is provided in the second slide groove, and a second side hole structure is formed on the second side insert toward the mold cavity.

[0011] As a further solution of the present invention: through holes are provided on the upper and lower sides of the sliding seat, and the through hole at the upper end is located corresponding to the side insert in the slide groove. The side insert is provided with a fixing hole corresponding to the through hole, and a fixing bolt is provided in the through hole, and the fixing bolt is screwed to the fixing hole.

[0012] As a further solution of the present invention: the first chute and the second chute are both T-shaped chute, the first side insert is provided with a top block 1 that is slidably fitted in the first chute, and the second side insert is provided with a top block 2 that is slidably fitted in the second chute;

[0013] Wherein, the fixing hole is opened on a side surface of the top block facing the through hole.

[0014] As a further solution of the present invention: two side surfaces of the top block 1 are formed with flat surfaces, and the fixing holes are opened on the flat surfaces of the top block 1.

[0015] Compared with the prior art, the beneficial effects of the present technical solution are as follows: the side groove of the product is formed by profiling the product, and the side hole structure is plugged into the corresponding side hole position, so that the product forms side holes distributed in the side groove position area. When the mold is opened and closed, the movement of the upper mold body drives the inclined guide column, and the inclined guide column and the slider seat slide together, so that the inclined guide column converts the vertical movement force into a force that pushes the slider seat to move horizontally during the up and down movement. The side hole structure driven by the slider seat is separated from the side hole position to complete the lateral core pulling of the product side hole, thereby realizing the formation of the product side groove while meeting the molding requirements of the product side hole, so as to solve the existing problem that the side groove cannot be well demoulded due to its flat side groove.

[0016] During the horizontal movement of the sliding seat, it can not only drive the side insert one, but also assemble the side insert two by setting the slide groove two, so that it can drive the side insert two and the side hole structure two at the same time. The double-layer structure design cleverly realizes the side core pulling action of the double side holes, which is convenient for demoulding and molding, saves the production cost of the mold, makes the mold structure simpler, and does not need to redesign the core pulling structure of the other side hole.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

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

[0020] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the lower die structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the sliding mechanism of the utility model;

[0023] The corresponding reference numerals in the accompanying drawings are described as follows:

[0024] 1. Fixed upper plate; 2. Upper mold body; 21. Upper mold core; 3. Lower mold body; 31. Lower mold core; 4. Ejector mechanism; 5. Fixed lower plate; 6. Mold cavity; 7. Product-profile insert; 71. Side hole position; 8. Slide mechanism; 9. Inclined guide column; 10. First guide rail; 11. Second guide rail; 12. Slide seat; 121. Slide groove 1; 122. Slide groove 2; 123. Through hole; 13. Side insert 1; 131. Side hole structure 1; 132. Inner hole structure; 133. Fixed hole; 134. Ejector block 1; 135. Flat surface; 14. Side insert 2; 141. Side hole structure 2; 142. Ejector block 2; 15. Fixing bolt. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-4 A side core-pulling injection mold comprises a fixed upper plate 1, an upper mold body 2 fixed to the fixed upper plate 1, a lower mold body 3 docked to the upper mold body 2, an ejection mechanism 4 provided on the lower mold body 3, and a fixed lower plate 5 fixed to the lower mold body 3;

[0027] The upper mold body 2 is provided with an upper mold core 21, and the lower mold body 3 is provided with a lower mold core 31. The upper mold core 21 and the lower mold core 31 are connected to each other to form a mold cavity 6 for molding the product. During the injection molding process, the molten plastic is injected into the mold cavity 6. The upper mold core 21 of the upper mold body 2 is responsible for molding a part of the surface features of the plastic part; the lower mold core 31 of the lower mold body 3 is responsible for molding another part of the surface features of the plastic part. The main function of the ejection mechanism 4 is to push the plastic part out of the mold cavity 6 after it cools and solidifies, thereby realizing the demolding of the plastic part. The ejection mechanism 4 is usually composed of components such as an ejector pin, an ejector rod, and a push plate. Through the movement of these components, the plastic part is pushed out of the lower mold core 31.

[0028] The lower die core 31 is provided with a product-profile insert 7 for forming a side groove of the product, and the product-profile insert 7 is formed with a side hole position 71;

[0029] The fixed upper plate 1 is provided with a pouring port, which is connected to a pouring channel, through which the rubber enters the mold cavity 6, and two product-profile inserts 7 are used to form two side grooves of the product;

[0030] A sliding mechanism 8 is arranged opposite to each other between the upper mold body 2 and the lower mold body 3. The sliding mechanism 8 includes an inclined guide column 9 fixed to the upper mold body 2, a first guide rail 10 fixed to the lower mold body 3, a second guide rail 11 and a sliding seat 12 slidingly engaged between the first guide rail 10 and the second guide rail 11. The inclined guide column 9 slides with the sliding seat 12 to drive the sliding seat 12 to slide toward the direction of docking with the mold cavity 6 or separation from the mold cavity 6 through the inclined guide column 9; the sliding seat 12 is formed with a slide groove 121 on one side end facing the mold cavity 6, and a side insert 13 is arranged in the slide groove 121. The side insert 13 is provided with a side hole structure 131 corresponding to the side hole position 71 on the end facing the product contour insert 7.

[0031] When the rubber material enters the mold cavity 6, the side hole structure 131 of the side insert 13 is plugged into the side hole position 71 of the product profiling insert 7, so that the product forms side holes distributed in the side groove position area. When the product is cooled and solidified and the mold is opened and closed, the movement of the upper mold body 2 drives the inclined guide column 9. Since the inclined guide column 9 slides with the slider seat 12, the inclined guide column 9 can convert the vertical movement force into a force that pushes the slider seat 12 to move horizontally during the up and down movement. The first guide rail 10 and the second guide rail 11 guide and limit the slider seat 12, so that the slider seat 12 can move horizontally stably between the first guide rail 10 and the second guide rail 11. The slider seat 12 drives the side insert 13, so that the side hole structure 131 of the side insert 13 is separated from the side hole position 71 to complete the lateral core pulling of the product side hole, thereby realizing the formation of the product side groove while meeting the molding requirements of the product side hole, so as to solve the existing problem that the side groove is relatively flat and cannot be well demolded.

[0032] Preferably, after the side hole structure 131 passes through the side hole position 71 , an inner hole structure 132 extending into the mold cavity 6 is formed.

[0033] like Figure 2 and Figure 3 As shown, a depression is formed at the upper end of the lower mold core 31, which cooperates with the upper mold core 21 to form a product with a depression structure on the top, and a structural feature in which the side groove position is lifted by the product-shaped insert 7. The inner hole structure 132 passes through the side hole position 71 and enters the mold cavity 6 and presses against the upper mold core 21, so that the product forms an inner hole, that is, the products of the two side groove parts have a connected perforated structure, and as the lateral core pulling action proceeds, the inner hole structure 132 can also be driven to separate from the mold cavity 6, which facilitates the formation of the product structure and reduces the mold manufacturing cost.

[0034] In the embodiment of the present invention, the slide seat 12 is further provided with a second slide groove 122 , a second side insert 14 is provided in the second slide groove 122 , and the second side insert 14 is formed with a second side hole structure 141 facing the mold cavity 6 .

[0035] Specifically, during the horizontal movement of the sliding seat 12, it can not only drive the side insert 13, but also assemble the side insert 14 by setting the slide groove 122, so that it can drive the side insert 14 and the side hole structure 141 at the same time. By utilizing the double-layer structure design, the side core pulling action of the double side holes is cleverly realized, which is convenient for demoulding and molding, saves the production cost of the mold, makes the mold structure simpler, and does not need to redesign the core pulling structure of the other side hole.

[0036] Furthermore, through holes 123 are provided on the upper and lower side surfaces of the slide seat 12, and the through hole 123 at the upper end is located corresponding to the side insert 13 in the slide groove 121. The side insert 13 is provided with a fixing hole 133 corresponding to the through hole 123. A fixing bolt 15 is provided in the through hole 123, and the fixing bolt 15 is screwed to the fixing hole 133.

[0037] Specifically, when assembling the side insert 13, the side insert 13 is slidably inserted into the slide groove 121, and then the fixing bolt 15 is passed through the through hole 123 and docked with the fixing hole 133. The fixing bolt 15 is then screwed to fix the position of the side insert 13, thereby facilitating the installation and removal of the side insert 13 and facilitating the replacement or maintenance of the side insert 13.

[0038] At the same time, the side insert 2 14 is provided with a structure similar to the side insert 13, such as the side insert 2 14 is provided with a fixing hole 2, the slide seat 12 is provided with a through hole 2 corresponding to the side insert 2 14, and is provided with a fixing bolt 2 for fixing the side insert 2 14, and its disassembly and assembly method is the same as that of the side insert 13, which will not be elaborated here.

[0039] Furthermore, the first slide 121 and the second slide 122 are both T-shaped slides, the first side insert 13 is provided with a top block 134 that is slidably matched with the first slide 121, and the second side insert 14 is provided with a top block 142 that is slidably matched with the second slide 122;

[0040] The fixing hole 133 is defined on a side surface of the top block 134 facing the through hole 123 .

[0041] Specifically, the T-shaped structure of the slide groove 121 and the slide groove 2 122 helps the top block 134 of the side panel 13 to be initially fixed after sliding and plugging with the slide groove 121, and helps the top block 2 142 of the side panel 2 14 to be initially fixed after sliding and plugging with the slide groove 2, so as to facilitate the installation of the side panel 13 and the side panel 2 14.

[0042] Furthermore, two side surfaces of the top block 134 are formed with flat surfaces 135 , and the fixing holes 133 are defined on the flat surfaces 135 of the top block 134 .

[0043] The design of the flat portion 135 can increase the contact area between the top block 134 and the chute 121, thereby increasing the stability of the top block 134 in the chute 121 and effectively preventing the top block 134 from loosening or shifting due to factors such as injection pressure and mechanical vibration during the operation of the mold.

[0044] At the same time, the design of the top block 2 142 is the same as that of the top block 1 134 , and the effects achieved are the same, which will not be described in detail here.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A side core-pulling injection mold, characterized in that: It comprises a fixed upper plate (1), an upper mold body (2) fixed to the fixed upper plate (1), a lower mold body (3) docked with the upper mold body (2), an ejection mechanism (4) arranged on the lower mold body (3), and a fixed lower plate (5) fixed to the lower mold body (3); The upper mold body (2) is provided with an upper mold core (21), and the lower mold body (3) is provided with a lower mold core (31). The upper mold core (21) and the lower mold core (31) are connected to each other to form a mold cavity (6) for molding a product. The lower mold core (31) is provided with a product-shaped insert (7) for molding a side groove of the product. The product-shaped insert (7) is formed with a side hole position (71). A sliding mechanism (8) is provided between the upper mold body (2) and the lower mold body (3) and is arranged opposite to each other. The sliding mechanism (8) includes an inclined guide column (9) fixed to the upper mold body (2), a first guide rail (10) fixed to the lower mold body (3), a second guide rail (11), and a sliding seat (12) slidably engaged between the first guide rail (10) and the second guide rail (11). The inclined guide column (9) is slidably matched with the sliding seat (12) to drive the sliding seat (12) to slide toward the direction of docking with the mold cavity (6) or separation from the mold cavity (6) through the inclined guide column (9); The sliding seat (12) is formed with a slide groove (121) on one side end facing the mold cavity (6), and a side insert (13) is provided in the slide groove (121). The side insert (13) is provided with a side hole structure (131) corresponding to the side hole position (71) on one end facing the product profiling insert (7).

2. The side core-pulling injection mold according to claim 1, characterized in that: After the side hole structure (131) passes through the side hole position (71), an inner hole structure (132) extending into the mold cavity (6) is formed.

3. The side core-pulling injection mold according to claim 1, characterized in that: The sliding seat (12) is further provided with a second slide groove (122), a second side insert (14) is provided in the second slide groove (122), and the second side insert (14) is formed with a second side hole structure (141) toward the mold cavity (6).

4. The side core-pulling injection mold according to claim 3, characterized in that: The upper and lower sides of the sliding seat (12) are both provided with through holes (123), and the through hole (123) at the upper end is located corresponding to the side insert (13) in the slide groove (121), and the side insert (13) is provided with a fixing hole (133) corresponding to the through hole (123), and a fixing bolt (15) is provided in the through hole (123), and the fixing bolt (15) is screwed to the fixing hole (133).

5. The side core-pulling injection mold according to claim 4, characterized in that: The first slide groove (121) and the second slide groove (122) are both T-shaped slide grooves, the first side insert (13) is provided with a top block (134) that is slidably matched with the first slide groove (121), and the second side insert (14) is provided with a top block (142) that is slidably matched with the second slide groove (122); The fixing hole (133) is formed on a side of the top block (134) facing the through hole (123).

6. The side core-pulling injection mold according to claim 5, characterized in that: Plane portions (135) are formed on both side surfaces of the top block (134), and the fixing hole (133) is opened on the planar portion (135) of the top block (134).

Images