Blade structure and two-color injection mold

Abstract

The utility model discloses a blade structure and double -color injection mold for being located on the slider, it includes: moving part, moving part is located on the slider, driving part, driving part drives moving part to be far away or close to the certain one outside surface of product, at least one first blade is used for carrying out the seal glue to the part of the certain one outside surface of product except the corner, is equipped with the space gap between first blade and moving part, second blade is used for carrying out the seal glue to the corner of the certain one outside surface of product, second blade is equipped on moving part, moving part drives second blade to move the distance of the space gap in the direction of being far away from product first, then drives first blade and second blade to open soft glue position simultaneously, the utility model provides a blade structure and double -color injection mold that wall thickness is consistent when the product has the corner and ensures product quality.

Description

Technical Field

[0001] This utility model relates to the field of two-color injection mold technology, and in particular to a blade structure and a two-color injection mold. Background Technology

[0002] Two-color injection molds are used to mold two-color product parts with a combined hard and soft plastic structure. The rear mold of a two-color injection mold has two rear mold cavities, and the front mold has two front mold cores. Each of the two rear mold cavities can mate with one of the two front mold cores. The blades of the two-color injection molding machine control the closing and opening of the second injection cavity.

[0003] According to existing technology, such as Figure 1 The product has a corner on one of its outer sides, and the surface at the corner is beveled. The product wall thickness is 2.5mm, and the blade retracts 2.5mm to produce soft rubber. However, in practice, at locations with height differences and corners on the outer side, the distance between the blade and the flat surface and the distance between the blade and the beveled surface are not equal after the blade retracts. This results in uneven product wall thickness during soft rubber injection, making it impossible to guarantee product quality. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a blade structure and a two-color injection mold that ensures product quality with consistent wall thickness when the product has corners.

[0005] To achieve the above objectives, the technical solution of this utility model is: a blade structure for mounting on a slider, comprising:

[0006] A movable part, which is disposed on a slider;

[0007] A driving component that drives a moving part away from or towards a certain outer side of the product;

[0008] At least one first blade is used to seal a portion of a certain outer side of the product, excluding corners, and a clearance is provided between the first blade and the moving part;

[0009] The second blade is used to seal the corner of a certain outer side of the product. The second blade is located on the moving part.

[0010] The moving part first moves the second blade away from the product to avoid the gap, and then simultaneously moves the first and second blades to open the soft rubber part.

[0011] With the above structure, this utility model has the following advantages compared with the prior art: It is equipped with a moving part, a driving component, a first blade, and a second blade. The first blade is used to seal the outer side of the product, excluding the corners, and the second blade is used to seal the corners of one side of the product. The driving component drives the moving part. There is a clearance between the first blade and the moving part. The second blade is located on the moving part. The second blade moves the distance of the clearance clearance first, and then the first and second blades move synchronously, ensuring that the thickness at the corner of one side of the product after injection molding is consistent with the thickness of other parts of that side, resulting in high product quality.

[0012] Preferably, the first blade is provided with a clearance groove, and the moving part is provided with a first pushing part corresponding to the clearance groove. The first pushing part extends into the clearance groove, and the clearance gap is the gap between the clearance groove and the first pushing part along the movement direction of the moving part. The clearance gap is formed through the gap between the clearance groove and the first pushing part, and the structure is simple.

[0013] Preferably, the first pushing part is detachably connected to the moving part for easy installation.

[0014] Preferably, at least one of the first blade and the second blade is provided with a limiting mechanism between itself and the slider to limit one of the first blade and the second blade and ensure product quality.

[0015] Preferably, the limiting mechanism includes a limiting groove and a limiting part, wherein the limiting part is slidably fitted in the limiting groove, and the structure is simple.

[0016] A two-color injection mold includes a blade structure as described in any of the above claims, wherein the slider is provided with a groove, and the moving part is slidably engaged in the groove.

[0017] Preferably, the slide is provided with a guide rod away from the inner wall of the product, and the side of the moving part is provided with a guide channel. The guide rod is slidably engaged in the guide channel, and the moving part is guided by the guide rod, which has high reliability.

[0018] Preferably, the upper surface of the slider is provided with a guide groove, the end of the guide groove facing the product extends through the outer side of the slider, and the first blade and the second blade are arranged in the guide groove along the length direction of the guide groove. The guide groove is used to guide the first blade and the second blade, which has high reliability. Attached Figure Description

[0019] Figure 1 It is a 3D model of the product.

[0020] Figure 2 This is a perspective view of a blade structure according to this utility model.

[0021] Figure 3This is a three-dimensional view of the blade structure of this utility model being installed on a slider for the first injection.

[0022] Figure 4 This is a three-dimensional view of a blade structure of this utility model mounted on a slider and subjected to a second injection molding.

[0023] Figure 5 This is a perspective view of a blade structure of this utility model applied to a two-color injection mold.

[0024] Among them, 1. slider, 110. slide groove, 111. guide rod, 112. snap-fit ​​protrusion, 120. guide groove, 2. moving part, 210. first pushing part, 220. second pushing part, 230. guide channel, 240. slot, 3. driving component, 4. first blade, 5. second blade, 510. fixing groove, 6. product, 610. first plane, 620. second plane, 7. clearance gap, 8. limiting mechanism, 810. limiting groove, 820. limiting part, 9. front mold assembly, 10. rear mold assembly, 11. hard rubber injection port, 12. soft rubber injection port. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 It is a 3D model of the product. Figure 2 This is a perspective view of a blade structure according to this utility model, as shown below. Figure 1 and 2In the illustrated embodiment, this utility model provides a blade structure, including a moving part 2, a driving member 3, a first blade 4, and a second blade 5. This blade structure is mounted on a slider 1, which is used to form a certain outer side of a product 6. The moving part 2 is used to drive the first blade 4 and the second blade 5 to move, and the driving member 3 is used to provide power to the moving part 2. The first blade 4 is used to seal the part of a certain outer side of the product except for the corners. That is, the first blade 4 seals the first plane 610 of a certain side of the product 6 that is perpendicular to the direction of movement of the slider 1. The second blade 5 seals the corners of a certain side of the product 6. That is, the second blade 5 seals the second plane 620 between two adjacent first planes 610 on a certain side of the product 6. At this time, the two adjacent first planes 610 are not in the same plane, so that there is an angle between the two adjacent first planes 610 and the second plane 620. That is, the second plane 620 is inclined relative to the first plane 610. The first blade 4 and the second blade 5 are driven by the same moving part 2. When the first blade 4 and the second blade 5 move synchronously a certain distance to perform soft rubber injection molding, the distance between the first plane 610 and the first blade 4 is greater than the distance between the second plane 620 and the second blade 5. This results in inconsistent wall thickness of the product 6 after soft rubber injection molding, which greatly affects the quality of the product 6 and leads to a high scrap rate.

[0027] A clearance 7 is provided between the first blade and the moving part 2. The purpose of the clearance 7 is to allow the second blade 5 to move a distance of clearance 7 so that the first blade 4 and the second blade 5 can move synchronously to open. This ensures that the distance between the first plane 610 and the first blade 4 is consistent with the distance between the second plane 620 and the second blade 5. After injection molding, the product 6 has a consistent wall thickness and a low scrap rate. Specifically, the first blade 4 is provided with a clearance groove 410, and the moving part 2 is provided with a first pushing part 210 corresponding to the clearance groove 410. The opening direction of the clearance groove 410 faces the first pushing part 210, and the first pushing part 210 extends into the clearance groove 410. The clearance 7 is the gap between the clearance groove 410 and the first pushing part 210 along the movement direction of the moving part 2. The clearance 7 is formed through the gap between the clearance groove 410 and the first pushing part 210, resulting in a simple structure. When the soft rubber section is first opened, the moving part 2 first drives the second blade 5 to move. At this time, the first pushing part 210 slides away from the product 6 in the clearance groove 410 until the first pushing part 210 moves the clearance gap 7 distance in the clearance groove 410. The first pushing part 210 abuts against the inner side wall of the clearance groove 410 away from the product 6. Finally, the moving part 2 drives the first blade 4 and the second blade 5 to move synchronously until the sealing section is fully opened.

[0028] Furthermore, the first pushing part 210 is detachably connected to the moving part 2, and the distance of the clearance 7 can be adjusted by replacing the first pushing part 210 with different widths to accommodate different soft rubber injection molding thicknesses. Specifically, the first pushing part 210 can be connected to the moving part 2 by screws, or it can be detached by snap-fit, fastening, etc.

[0029] Furthermore, the clearance groove 410 is a through-hole groove that runs vertically through the first blade 4, which makes the clearance groove 410 deep and the contact area between the first pushing part 210 and the clearance groove 410 large, making it easier for the first pushing part 210 to drive the first blade 4 to move.

[0030] Specifically, the first moving part 210 slides on both sides of the inner sidewalls of the clearance groove 410 to guide the first blade 4.

[0031] Specifically, the second blade 5 is provided with a fixing groove 510, and the moving part 2 is provided with a second pushing part 220 corresponding to the fixing groove 510. The second pushing part 220 extends into the fixing groove 510 to drive the second blade 5 to move.

[0032] Specifically, in this embodiment, product 6 has four outer surfaces, all of which require injection molding of soft rubber. One of the outer surfaces has two second planes 620, thus requiring two second blades 5 to control the opening and closing of the soft rubber areas on these two second planes 620. Adjacent first planes 610 are separated by the second planes 620, requiring at least three blades 5 to control the opening and closing of the soft rubber areas on the first planes 610. In other words, each side of the second plane 620 has a first plane 610, and the second planes 620 correspond one-to-one with the moving part 2. The other three outer surfaces do not have second planes 620, therefore only the first blades 4 are needed to control the opening and closing of the soft rubber areas. The first blades 4 are located on the corresponding sliders 1.

[0033] Specifically, the drive component 3 can be a hydraulic cylinder, a pneumatic cylinder, etc., and the piston rod of the drive component 3 is connected to the moving part 2.

[0034] Figure 3 This is a three-dimensional view of the blade structure of this utility model mounted on a slider during the first injection. Figure 4 This is a perspective view of a blade structure mounted on a slider for the second injection according to this utility model. Figure 3 The first blade 4, located at the front end of product 6, is as follows: Figure 3 and 4In the illustrated embodiment, at least one of the first blade 4 and the second blade 5 is provided with a limiting mechanism 8 between itself and the slider 1 to limit the width of the soft rubber portion and ensure product quality. Specifically, the limiting mechanism 8 includes a limiting groove 810 and a limiting part 820. The limiting part 820 slides within the limiting groove 810 along the movement direction of the moving part 2, resulting in a simple structure. Specifically, when the limiting mechanism 8 is provided between the first blade 4 and the slider 1, the limiting groove 810 is located on the first blade 4, and the limiting part 820 is located on the slider 1; when the limiting mechanism 8 is provided between the second blade 5 and the slider 1, the limiting groove 810 is located on the second blade 5, and the limiting part 820 is located on the slider 1.

[0035] This utility model also provides a two-color injection mold, wherein the slider 1 is provided with a groove 110, the moving part 2 is slidably engaged in the groove 110, the driving member 3 is provided on the slider 1, and the driving member 3 drives the moving part 2 to slidably engage in the groove 110, so that the moving part 2 moves in the direction away from the product 6 and towards the product 6.

[0036] Furthermore, the slide 110 is provided with a guide rod 111 away from the inner wall of the product, and the moving part 2 is provided with a guide channel 230 on its side. The guide rod 111 is slidably engaged in the guide channel 230, and the moving part 2 is guided by the guide rod 111, which has high reliability.

[0037] Specifically, the moving part 2 is a block structure that slides within the slider 1.

[0038] Furthermore, the upper surface of the slider 1 is provided with a guide groove 120. The end of the guide groove 120 facing the product 6 extends through the outer side of the slider 1. The first blade 4 and the second blade 5 are both arranged in the guide groove 120 along its length. The guide groove 120 guides the first blade 4 and the second blade 5, ensuring high reliability. Specifically, the guide groove 120 is an elongated groove. The first blade 4 and the second blade 5 are both located in the guide groove 120, and the second blade 5 abuts against its adjacent first blade 4. The two inner sidewalls of the guide groove 120 abut against the first blade 4, and the first blade 4 and the second blade 5 can slide relative to each other to provide guidance.

[0039] Furthermore, the slide groove 110 is located on the bottom surface of the guide groove 120 away from the product 6. The moving part 2 has a retaining groove 240 on its outer side facing the product 6. The slide groove 110 has a retaining protrusion 112 near the inner wall of the product 6. The retaining groove 240 and the retaining protrusion 112 connect the moving part 2 and the slider 1. During injection molding, the moving part 2 is not easily moved, resulting in high reliability. Specifically, the retaining groove 240 is an arc-shaped groove with its opening facing the product 6. The arc shape serves as a guide, making it easy for the retaining groove 240 to engage with the retaining protrusion 112.

[0040] Figure 5 This is a perspective view of a blade structure of this utility model applied to a two-color injection mold, as shown. Figure 5 In the illustrated embodiment, this utility model provides a two-color injection mold, including a front mold assembly 9 and a rear mold assembly 10. A slider 1 is disposed between the front mold assembly 9 and the rear mold assembly 10. The upper surface of the front mold assembly 9 is provided with a hard plastic injection port 11 for the first injection, and the outer side of the front mold assembly 9 is provided with a soft plastic injection port 12 for the second injection. The first and second injections are at 90° angles, using two injection molding machines. The second injection is generally a small injection molding machine with a smaller output. The mold is a single-cavity two-color mold, so the initial mold development cost and the investment in the tonnage of the injection molding machine are relatively low.

[0041] The principle of this invention is based on the following: a moving part 2, a driving component 3, a first blade 4, and a second blade 5 are respectively configured. The first blade 4 is used to seal the outer side of a product 6, excluding the corners, while the second blade 5 is used to seal the corners of a certain side of the product 6. The driving component 3 drives the moving part 2. There is a clearance between the first blade 4 and the moving part 2. The second blade 5 is mounted on the moving part 2. First, the second blade 5 moves the distance of the clearance 7, and then the first blade 4 and the second blade 5 move synchronously. This ensures that after injection molding of the soft glue, the thickness at the corner of a certain side of the product 6 is consistent with the thickness of other parts of that side, resulting in high product quality.

[0042] Operation process: Taking the injection molding of 2.5mm thick soft rubber with a clearance of 1.1mm as an example: 1. First injection: Hard rubber molding product 6; 2. The driving component 3 drives the moving part 2 to slide away from the product 6 and engage with the slide groove 110. The second pushing part drives the second blade 5 to move away from the product 6. At this time, the first pushing part 210 slides and engages with the clearance groove 410. Figure 3 Second, when the second blade 5 moves 1.1mm, the first pushing part 210 abuts against the inner wall of the clearance groove 410 away from the product 6; Third, the driving member 3 continues to drive the moving part 2 to move, and the first pushing part 210 and the second pushing part 220 respectively drive the first blade 4 and the second blade 5 to move 2.5mm, so that the distance between the first blade 4 and the first plane 610 is 2.5mm, and the distance between the second blade 5 and the second plane 620 is 2.5mm. At this time, the limiting part 820 abuts against the side of the limiting groove 810 near the inner wall of the product 6 to achieve limiting. Figure 4 ; Fourth, second injection: soft glue is injected onto the six sides of the product.

[0043] Based on the above solutions, if any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A blade structure for mounting on a slider (1), characterized in that: It includes: The movable part (2) is provided on the slider (1); The driving member (3) drives the moving part (2) away from or closer to a certain outer side of the product (6); At least one first blade (4) is used to seal a portion of an outer side of the product (6) except for the corner (610), and a clearance gap (7) is provided between the first blade (4) and the moving part (2); The second blade (5) is used to seal the corner (610) on a certain outer side of the product (6). The second blade (5) is provided on the moving part (2). The moving part (2) first drives the second blade (5) to move away from the product (6) to avoid the distance of the gap (7), and then simultaneously drives the first blade (4) and the second blade (5) to open the soft rubber position.

2. The blade structure according to claim 1, characterized in that: The first blade (4) is provided with a clearance groove (410), and the moving part (2) is provided with a first pushing part (210) corresponding to the clearance groove (410). The first pushing part (210) extends into the clearance groove (410), and the clearance gap (7) is the gap between the clearance groove (410) and the first pushing part (210) along the movement direction of the moving part (2).

3. The blade structure according to claim 2, characterized in that: The first pushing part (210) is detachably connected to the moving part (2).

4. The blade structure according to claim 1, characterized in that: A limiting mechanism (8) is provided between at least one of the first blade (4) and the second blade (5) and the slider (1).

5. The blade structure according to claim 4, characterized in that: The limiting mechanism (8) includes a limiting groove (810) and a limiting part (820), wherein the limiting part (820) is slidably fitted in the limiting groove (810).

6. A two-color injection mold, comprising a blade structure as described in any one of claims 1-5, characterized in that: The slider (1) is provided with a groove (110), and the moving part (2) is slidably engaged in the groove (110).

7. The two-color injection mold according to claim 6, characterized in that: The slide groove (110) is provided with a guide rod (111) on the inner side wall away from the product (6), and the moving part (2) is provided with a guide channel (230) on the side, and the guide rod (111) is slidably engaged in the guide channel (230).

8. The two-color injection mold according to claim 6 or 7, characterized in that: The upper surface of the slider (1) is provided with a guide groove (120). The end of the guide groove (120) facing the product (6) passes through the outer side of the slider (1). The first blade (4) and the second blade (5) are arranged in the guide groove (120) along the length direction of the guide groove (120).

Images