Injection mold for special-shaped insert

Abstract

The invention provides an injection mold for a special-shaped insert, and relates to the technical field of injection molding equipment. The injection mold comprises a lower mold base and an upper mold base located above the lower mold base, and further comprises a sliding base which is connected to the lower mold base in a sliding mode and slides in the direction away from a cavity through lifting of the upper mold base; the sliding block assembly is horizontally limited on one side, close to the cavity, of the sliding seat, and a plurality of special-shaped inserts are mounted on the sliding block assembly; and the elastic clamping structure is installed on the lower die base, and the bottom of the sliding base is limited on the lower die base through the elastic clamping structure and is separated from the elastic clamping structure through lifting of the upper die base. On the whole, the mounting difficulty of the special-shaped insert can be effectively reduced, and the consistency of product quality is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding equipment, in particular to an injection molding mold for special-shaped inserts. Background Art

[0002] Regarding special-shaped inserts, since there are many sliders installed on the mold, it is difficult to place the inserts before mold closing for injection molding, and the inserts will have a certain displacement when the mold is closed, which can easily cause the inserts to be squeezed and deformed by the sliders, seriously affecting the quality of the product.

[0003] Therefore, there is an urgent need for an injection mold for special-shaped inserts that effectively reduces the difficulty of installing special-shaped inserts and effectively improves the consistency of product quality. Summary of the invention

[0004] The purpose of the present invention is to provide an injection mold for special-shaped inserts, which solves the technical problems of insert placement difficulties and easy deformation during mold extrusion in the prior art. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides an injection mold for a special-shaped insert, comprising a lower mold base and an upper mold base located above the lower mold base, and further comprising:

[0007] A slide seat, the slide seat is slidably connected to the lower die seat, and is lifted by the upper die seat to slide in a direction away from the cavity;

[0008] A slider assembly, wherein the slider assembly is horizontally limited on a side of the slide seat close to the cavity, and a plurality of special-shaped inserts are installed on the slider assembly;

[0009] An elastic clamping structure is installed on the lower die base, the bottom of the slide seat is limited on the lower die base by the elastic clamping structure, and is lifted off the elastic clamping structure by the upper die base.

[0010] Preferably, the elastic clamping structure comprises:

[0011] a first clamp, wherein a first end of the first clamp is rotatably connected to the lower die base;

[0012] A second clamping member, wherein the middle end of the second clamping member is rotatably connected to the first clamping member, and the second end of the second clamping member and the second end of the first clamping member are clamped at the bottom of the slide seat by elastic force.

[0013] Preferably, it also includes:

[0014] A positioning column, the positioning column is vertically fixedly connected to the bottom of the slide seat;

[0015] A second spring is installed between the first end of the second clamp and the first end of the first clamp.

[0016] Preferably, it also includes:

[0017] A T-shaped groove is provided on the top surface of the slide seat, and one end of the slide block assembly away from the cavity is vertically slidably connected in the T-shaped groove.

[0018] Preferably, it also includes:

[0019] A second oblique guide post, the second oblique guide post is obliquely fixedly connected to the upper die seat along a side of the slide away from the cavity;

[0020] A U-shaped groove is provided on a side of the slide away from the cavity, the second oblique guide column is limited in the U-shaped groove, and is lifted out of the U-shaped groove by the upper die seat.

[0021] Preferably, it also includes:

[0022] Spring pins, two groups of spring pins arranged opposite to each other are respectively inserted into the side walls of the U-shaped groove;

[0023] The third spring, two groups of the third springs are arranged in the slide seat, and respectively abut between the insertion ends of the two groups of elastic needles and the inner side walls of the slide seat, and the second inclined guide column is limited between the limiting ends of the two groups of elastic needles and the bottom wall of the U-shaped groove.

[0024] Preferably, it also includes:

[0025] An inclined surface is arranged on a side of the limiting end of the needle away from the bottom wall of the U-shaped groove.

[0026] Preferably, it also includes:

[0027] An upper module and a lower module, wherein the upper module is fixedly connected to the bottom surface of the upper die base, and the lower module is fixedly connected to the top surface of the lower die base;

[0028] Side sliders, two groups of side sliders are relatively slidably connected to the top surface of the lower mold base, and are respectively lifted by the upper mold base to slide in a direction away from the cavity. The cavity is formed between the upper mold base, the lower mold base, the two groups of side sliders and the slider assembly.

[0029] Preferably, it also includes:

[0030] The top ends of the two groups of first inclined guide pillars are respectively fixedly connected to the upper die seat, and the bottom ends of the two groups of first inclined guide pillars are respectively inclined in a direction away from the cavity and extend into the side slide block from top to bottom.

[0031] Preferably, it also includes:

[0032] A through hole, wherein the through hole is obliquely opened on the side slide block, and the bottom end of the first oblique guide column is adapted to the through hole;

[0033] An oblong hole is provided on the top surface of the lower die base and is arranged corresponding to the bottom end of the first oblique guide column.

[0034] In the technical solution provided by the present invention, the main function of the slider assembly is to install the special-shaped insert, the main function of the slide seat is to facilitate manual pushing of the slider assembly with the special-shaped insert to the position of the cavity, and reduce the difficulty of installing the special-shaped insert; the main function of the elastic clamping structure is to limit the slider located at the position of the cavity, effectively avoiding the displacement of the slider during mold closing, thereby effectively preventing the slider assembly with the special-shaped insert from being displaced during mold closing. This arrangement ensures the stability of the special-shaped insert during mold closing. Overall, the present application can effectively reduce the difficulty of installing special-shaped inserts and effectively improve the consistency of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0036] Figure 1 It is a schematic diagram of the overall mold closing of the lower mold base and the upper mold base of the present invention;

[0037] Figure 2 It is a schematic diagram of the mold clamping state of the upper module, the side slider and the slider assembly of the present invention;

[0038] Figure 3 It is a schematic diagram of the second inclined guide post and the slide seat of the present invention;

[0039] Figure 4 It is a schematic diagram of the special-shaped insert and insert of the present invention;

[0040] Figure 5 It is a schematic diagram of the slide seat, the positioning column and the first clamp of the present invention;

[0041] Figure 6 It is a schematic diagram of the positioning column, the first clamp and the second clamp of the present invention.

[0042] In the figure, 1-lower die base; 2-upper die base; 3-upper die block; 4-first oblique guide column; 5-through hole; 6-side slide block; 7-T-shaped groove; 8-slide seat; 9-spring pin; 10-second oblique guide column; 11-U-shaped groove; 12-slide block assembly; 13-product; 14-lower die block; 15-oblong hole; 16-first spring; 17-insert; 18-special-shaped insert; 19-thrust pin; 20-first clamp; 21-positioning column; 22-second clamp. DETAILED DESCRIPTION

[0043] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0044] refer to Figure 1-6 A specific embodiment of the present invention provides an injection mold for a special-shaped insert, comprising a lower mold base 1 and an upper mold base 2 located above the lower mold base 1, and further comprising:

[0045] The slide 8 is slidably connected to the lower die base 1 and is lifted by the upper die base 2 to slide in a direction away from the cavity;

[0046] A slider assembly 12, the slider assembly 12 is horizontally limited at a side of the slide seat 8 close to the cavity, and a plurality of special-shaped inserts 18 are installed on the slider assembly 12;

[0047] The elastic clamping structure is installed on the lower die base 1. The bottom of the slide 8 is limited on the lower die base 1 by the elastic clamping structure, and is lifted up by the upper die base 2 to be separated from the elastic clamping structure.

[0048] Regarding special-shaped inserts, since there are many sliders installed on the mold, it is difficult to place the inserts before mold closing and injection molding, and the inserts will have a certain displacement when the mold is closed, which can easily cause the inserts to be squeezed and deformed by the sliders, seriously affecting the quality of the product. In this application, the main function of the slider assembly 12 is to install the special-shaped insert 18, and the main function of the slide 8 is to facilitate the manual pushing of the slider assembly 12 with the special-shaped insert 18 installed to the position of the cavity, reducing the difficulty of installing the special-shaped insert 18; the main function of the elastic clamping structure is to limit the slide 8 located at the cavity position, effectively avoiding the displacement of the slide 8 when the mold is closed, thereby effectively preventing the slider assembly 12 with the special-shaped insert 18 installed from being displaced when the mold is closed. This arrangement ensures the stability of the special-shaped insert 18 when the mold is closed. On the whole, this application can effectively reduce the difficulty of installing special-shaped inserts and effectively improve the consistency of the quality of the product 13.

[0049] Further optimization scheme, the elastic clamping structure includes:

[0050] A first clamp 20, a first end of the first clamp 20 is rotatably connected to the lower die base 1;

[0051] The second clamping member 22 has a middle end rotatably connected to the first clamping member 20 , and the second end of the second clamping member 22 and the second end of the first clamping member 20 are clamped at the bottom of the slide seat 8 by elastic force.

[0052] When the slider assembly 12 equipped with the special-shaped insert 18 slides vertically above the slide 8, and the slide 8 is manually pushed toward a position close to the cavity, the bottom of the slide 8 overcomes the elastic force between the second end of the second clamp 22 and the second end of the first clamp 20, and squeezes in between the second end of the second clamp 22 and the second end of the first clamp 20, closing the second end of the second clamp 22 and the second end of the first clamp 20 by the elastic force. In this way, the special-shaped insert 18 is restricted to a specified position in the cavity by restricting the slide 8.

[0053] Further optimization plans also include:

[0054] A positioning column 21, the positioning column 21 is vertically fixedly connected to the bottom of the slide seat 8;

[0055] The second spring is installed between the first end of the second clamp 22 and the first end of the first clamp 20 .

[0056] The outer sides of the second end of the second clamp 22 and the second end of the first clamp 20 are set as arcuate surfaces, which are conducive to the positioning column 21 to squeeze into the second end of the second clamp 22 and the inner side of the second end of the first clamp 20; when the special-shaped insert 18 gradually approaches the cavity, the positioning column 21 overcomes the elastic force of the second spring and gradually pushes the second end of the second clamp 22 and the second end of the first clamp 20 apart. When the positioning column 21 squeezes into the inner side of the second end of the second clamp 22 and the second end of the first clamp 20, the positioning column 21 is clamped between the second end of the second clamp 22 and the second end of the first clamp 20 by the elastic force of the second spring; the force generated on the slide 8 during the mold closing process is not enough to open the second end of the second clamp 22 and the second end of the first clamp 20 through the positioning column 21, thereby effectively ensuring the stability of the position of the special-shaped insert 18 in the cavity.

[0057] Further optimization plans also include:

[0058] The T-shaped groove 7 is arranged on the top surface of the slide seat 8 , and one end of the slider assembly 12 away from the cavity is vertically slidably connected in the T-shaped groove 7 .

[0059] The T-slot 7 effectively limits the position of the slider assembly 12 on the slide seat 8 to prevent horizontal displacement.

[0060] Further optimization plans also include:

[0061] A second inclined guide post 10, the second inclined guide post 10 is fixedly connected to the upper die seat 2 along a side of the slide seat 8 away from the cavity;

[0062] The U-shaped groove 11 is provided on a side of the slide 8 away from the cavity. The second inclined guide column 10 is limited in the U-shaped groove 11 and is lifted out of the U-shaped groove 11 by the upper die seat 2 .

[0063] During the mold closing process, the second inclined guide post 10 moves downward and enters the U-shaped groove 11. When the second inclined guide post 10 contacts the bottom wall of the U-shaped groove 11, the slide 8 is further limited to prevent the slide 8 from sliding to the side away from the cavity.

[0064] Further optimization plans also include:

[0065] Elastic pins 9, two groups of elastic pins 9 arranged opposite to each other are respectively inserted into the side walls of the U-shaped groove 11;

[0066] The third springs, two groups of the third springs are arranged in the slide seat 8, and respectively abut between the insertion ends of the two groups of elastic needles 9 and the inner side walls of the slide seat 8, and the second oblique guide pillars 10 are limited between the limiting ends of the two groups of elastic needles 9 and the bottom wall of the U-shaped groove 11;

[0067] The inclined surface is arranged on the side of the limiting end of the needle 9 away from the bottom wall of the U-shaped groove 11.

[0068] During the mold closing process, the second inclined guide column 10 moves vertically and first contacts the inclined surface of the spring pin 9, which can push open the two groups of spring pins 9, and the two groups of third springs are compressed; when the second inclined guide column 10 completely passes through the two groups of spring pins 9, the second inclined guide column 10 contacts the bottom wall of the U-shaped groove 11, thereby further limiting the slide 8, and with the cooperation of the elastic clamping structure, preventing the slide 8 from sliding to the side away from the cavity.

[0069] Further optimization plans also include:

[0070] The upper module 3 and the lower module 14, the upper module 3 is fixedly connected to the bottom surface of the upper die base 2, and is fixedly connected to the top surface of the lower die base 1;

[0071] The side slide block 6, two sets of side slide blocks 6 are relatively slidably connected to the top surface of the lower die base 1, and are respectively lifted by the upper die base 2 and slide in a direction away from the cavity, and a cavity is formed between the upper die block 3, the lower die block 14, the two sets of side slide blocks 6 and the slide block assembly 12. Among them, a plurality of special-shaped inserts 18 are installed on the insert 17 on the slide block assembly 12.

[0072] The second inclined guide post 10 is generally a cylindrical structure. When the second inclined guide post 10 passes through the two groups of elastic needles 9 near the curved surface of the bottom wall of the U-shaped groove 11, the second inclined guide post 10 does not contact the bottom wall of the U-shaped groove 11. Under the action of the third spring rebound force, the two groups of elastic needles 9 will contact the curved surface of the second inclined guide post 10 away from the bottom wall of the U-shaped groove 11 as the second inclined guide post 10 moves downward. If there is no limiting effect of the elastic clamping structure, in the principle of action and reaction force, the two groups of elastic needles 9 will contact the curved surface of the second inclined guide post 10 away from the bottom wall of the U-shaped groove 11, and the slide 8 will be driven to slide in the direction away from the cavity. At this moment, continuing to close the mold will cause the two groups of side slides 6 to gradually approach the cavity. Due to the instantaneous reverse displacement of the slide 8 (i.e., displacement in the direction away from the cavity), the special-shaped insert 18 located in the cavity will be separated from the cavity, and the two groups of side slides 6 will squeeze the special-shaped insert 18 on the slide assembly 12, causing the special-shaped insert 18 to be extruded and deformed, seriously affecting the quality of the product 13.

[0073] Further optimization plans also include:

[0074] First oblique guide pins 4, the top ends of the two groups of first oblique guide pins 4 are respectively fixedly connected to the upper die base 2, and the bottom ends of the two groups of first oblique guide pins 4 are respectively inclined in a direction away from the cavity and extend into the side slide block 6 from top to bottom;

[0075] A through hole 5 is obliquely provided on the side slide block 6, and the bottom end of the first oblique guide column 4 is adapted to the through hole 5;

[0076] The oblong hole 15 is provided on the top surface of the lower die base 1 and is arranged corresponding to the bottom end of the first oblique guide column 4;

[0077] The first springs 16 , the two groups of first springs 16 are respectively abutted between the lower die base 1 and one side of the two groups of side slide blocks 6 close to the cavity.

[0078] In the initial state, under the elastic force of the first spring 16, the two sets of side slides 6 are located at a position where the top surface of the lower die base 1 is away from the cavity; when the mold is closed, the two sets of first inclined guide pillars 4 move downward synchronously with the upper die base 2, and the bottom ends of the first inclined guide pillars 4 first enter the through hole 5, and the side walls of the two sets of first inclined guide pillars 4 synchronously push the two sets of side slides 6 to slide in the direction close to the cavity and overcome the elastic force of the first spring 16; when the two sets of side slides 6 slide into place and contact each other, in order to avoid motion interference, the bottom ends of the two sets of first inclined guide pillars 4 vertically extend into the oblong hole 15. When the mold is opened, the side walls of the two sets of first inclined guide pillars 4 synchronously push the two sets of side slides 6 to slide in the direction away from the cavity, and under the action of the first spring 16, the side slides 6 are restricted to the initial state.

[0079] Further optimization plans also include:

[0080] Ejector pins 19, a plurality of ejector pins 19 are respectively vertically slidably connected in the lower die base 1 and are located below the product 13. The plurality of ejector pins 19 are synchronously driven to rise and fall by cylinders.

[0081] After the mold is opened, the slider assembly 12, the two sets of side sliders 6, and the upper mold block 3 are away from the mold cavity, and the product 13 is completely exposed. At this time, the ejector pin 19 is driven to rise and the product 13 is separated from the lower mold block 14, so that the product 13 can be taken out.

[0082] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. used herein to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0083] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0084] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An injection mold for a special-shaped insert, comprising a lower mold base (1) and an upper mold base (2) located above the lower mold base (1), characterized in that: Also includes: A slide seat (8), the slide seat (8) being slidably connected to the lower die seat (1) and being lifted by the upper die seat (2) to slide in a direction away from the cavity; A slider assembly (12), the slider assembly (12) being horizontally limited on a side of the slide seat (8) close to the cavity, and a plurality of special-shaped inserts (18) being mounted on the slider assembly (12); An elastic clamping structure is installed on the lower die base (1), the bottom of the slide seat (8) is limited on the lower die base (1) by the elastic clamping structure, and is lifted up by the upper die base (2) to be separated from the elastic clamping structure.

2. The injection mold for special-shaped inserts according to claim 1, characterized in that: The elastic clamping structure comprises: A first clamp (20), wherein a first end of the first clamp (20) is rotatably connected to the lower die base (1); A second clamp (22), the middle end of the second clamp (22) is rotatably connected to the first clamp (20), and the second end of the second clamp (22) and the second end of the first clamp (20) are clamped at the bottom of the slide seat (8) by elastic force.

3. The injection mold for special-shaped inserts according to claim 2, characterized in that: Also includes: A positioning column (21), wherein the positioning column (21) is vertically fixedly connected to the bottom of the slide seat (8); A second spring is installed between the first end of the second clamp (22) and the first end of the first clamp (20).

4. The injection mold for special-shaped inserts according to claim 1, characterized in that: Also includes: A T-shaped groove (7) is provided on the top surface of the slide seat (8), and one end of the slide block assembly (12) away from the cavity is vertically slidably connected in the T-shaped groove (7).

5. The injection mold for special-shaped inserts according to claim 1, characterized in that: Also includes: A second inclined guide post (10), the second inclined guide post (10) being fixedly connected to the upper die seat (2) along a side of the slide seat (8) away from the die cavity and being inclined; A U-shaped groove (11) is provided on a side of the slide seat (8) away from the mold cavity, and the second inclined guide column (10) is limited in the U-shaped groove (11) and is lifted up and separated from the U-shaped groove (11) by the upper mold seat (2).

6. The injection mold for special-shaped inserts according to claim 5, characterized in that: Also includes: Spring pins (9), two groups of spring pins (9) arranged opposite to each other are respectively inserted into the side walls of the U-shaped groove (11); The third spring, two groups of the third spring are arranged in the slide seat (8), and are respectively abutted between the insertion ends of the two groups of elastic needles (9) and the inner side wall of the slide seat (8), and the second inclined guide column (10) is limited between the limiting ends of the two groups of elastic needles (9) and the bottom wall of the U-shaped groove (11).

7. The injection mold for special-shaped inserts according to claim 6, characterized in that: Also includes: An inclined surface is arranged on a side of the limiting end of the needle (9) away from the bottom wall of the U-shaped groove (11).

8. The injection mold for special-shaped inserts according to claim 1, characterized in that: Also includes: An upper module (3) and a lower module (14), wherein the upper module (3) is fixedly connected to the bottom surface of the upper die base (2), and the lower module (14) is fixedly connected to the top surface of the lower die base (1); Side sliders (6), two groups of the side sliders (6) are relatively slidably connected to the top surface of the lower mold base (1), and are respectively lifted by the upper mold base (2) to slide in a direction away from the mold cavity, and the mold cavity is formed between the upper mold block (3), the lower mold block (14), the two groups of side sliders (6) and the slider assembly (12).

9. The injection mold for special-shaped inserts according to claim 8, characterized in that: Also includes: The top ends of the two groups of first inclined guide pillars (4) are respectively fixedly connected to the upper die seat (2), and the bottom ends of the two groups of first inclined guide pillars (4) are respectively inclined in a direction away from the die cavity and extend into the side slide block (6) from top to bottom.

10. The injection mold for special-shaped inserts according to claim 9, characterized in that: Also includes: A through hole (5), wherein the through hole (5) is obliquely opened on the side slide block (6), and the bottom end of the first oblique guide column (4) is adapted to the through hole (5); An oblong hole (15) is provided on the top surface of the lower die base (1) and is arranged corresponding to the bottom end of the first inclined guide column (4).

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