Straight top side core-pulling composite structure

Abstract

The utility model discloses a straight top side core-pulling composite structure, and belongs to the technical field of molds. A straight ejection side core-pulling composite structure comprises a rear mold frame, a rear mold core is fixedly arranged in the rear mold frame, and the straight ejection side core-pulling composite structure further comprises a guide block and a guide block, the ejector rod is connected in the rear mold frame in a sliding manner; the ejector block is connected in the rear mold core in a sliding mode, an inclined guide groove is formed in one side face of the ejector block, an inclined guide block matched with the inclined guide groove is fixedly arranged on the guide block, one end of the ejector rod abuts against the ejector block, and an insert is fixedly arranged on the other side face of the ejector block; the ejection block is pushed by the ejection rod to be ejected out of the rear mold core, and the ejection block can complete lateral movement under the guide action of the inclined guide block on the guide block, so that a product is effectively ejected out and the demolding effect of a side threaded column is achieved, the phenomenon that the product is unsmoothly ejected out is avoided, the ejection block is stable in structure and high in strength, the situation that the mold is stuck can be prevented, and the service life of the mold is prolonged. And the production quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a straight top and side core-pulling composite structure. Background Art

[0002] A mold is a tool used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is a tool that makes the blank become a part of a specific shape and size under the action of external force. It is widely used in punching, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression or injection molding of engineering plastics, rubber, ceramics and other products.

[0003] When the product has a deep cavity and there are threaded columns on the side of the rib, there will be deep cavities, narrow movement space, and long ejection stroke inside the mold. The traditional design solution is to design a slanted top structure, but due to the limitation of the product structure, the slanted top can only be designed as a square rod slanted top (the square rod slanted top will rise with the production temperature of the mold, which is prone to ejection problems, resulting in the mold being stuck and unable to produce), and the slanted top cannot be made thick, resulting in increased mold manufacturing and product manufacturing costs (mold manufacturing and maintenance costs, injection molding production costs, labor costs), poor product quality and other problems, affecting production results. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the product has a deep cavity and a threaded column on the side, which easily causes the product to be ejected unsmoothly and leads to mold jamming, and proposes a straight top side core pulling composite structure.

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

[0006] A straight top side core-pulling composite structure comprises a rear mold frame, in which a rear mold core is fixedly arranged, and further comprises: a guide block, one end of which is fixedly connected to the rear mold frame; a push rod, which is slidably connected in the rear mold frame; and a push block, which is slidably connected in the rear mold core, wherein an inclined guide groove is provided on one side of the push block, an inclined guide block matching the inclined guide groove is fixedly arranged on the guide block, one end of the push rod is abutted against the push block, and an insert is fixedly arranged on the other side of the push block.

[0007] In order to reduce the interference of the push rod on the movement of the push block, preferably, a guide groove is opened at the bottom of the push block, a slider is fixedly provided at one end of the push rod, the slider is slidably connected in the guide groove, and the end surface of the slider away from the push rod abuts against the top of the guide groove.

[0008] In order to ensure reliable connection between the ejector rod and the ejector block, further, the cross sections of the inclined guide groove and the guide groove are both T-shaped structures.

[0009] In order to facilitate the sliding of the ejector plate and the bottom plate, preferably, a mounting block is fixedly provided on the end surface of the rear mold frame away from the rear mold core, and two groups of the mounting blocks are symmetrically arranged.

[0010] Furthermore, an ejector plate is slidably arranged between the two groups of mounting blocks, a bottom plate is fixedly arranged on the ejector plate, a limit plate is fixedly arranged at the other end of the ejector rod, and the limit plate is located between the bottom plate and the ejector plate.

[0011] Furthermore, a through hole is formed on the ejector plate, a countersunk hole is formed on the end surface of the through hole close to the bottom plate, the limit plate is located in the countersunk hole, and the end surface of the limit plate away from the ejector pin abuts against the bottom plate.

[0012] Preferably, a rear cover plate is fixedly provided on the end surface of the mounting block away from the rear mold frame.

[0013] Furthermore, an end surface of the bottom plate away from the ejector plate abuts against the rear cover plate.

[0014] Compared with the prior art, the utility model provides a straight top side core pulling composite structure, which has the following beneficial effects:

[0015] 1. The straight top side core-pulling composite structure pushes the top block out of the rear mold core through the top rod. The guiding effect of the oblique guide block on the guide block can make the top block complete the lateral movement, thereby completing the effective ejection of the product and the demoulding effect of the side thread column, avoiding the product ejection problem. In addition, the top block has a stable structure and high strength, which can prevent the mold from getting stuck and help improve production quality.

[0016] 2. The straight top side core-pulling composite structure has a T-shaped guide groove at the bottom of the top block, and a slider matching the guide groove is fixed on the top rod, which can ensure the reliable lateral movement of the top block, prevent separation from or interference with the top rod, affect normal use, and improve stability during use.

[0017] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The utility model uses the ejector rod to push the ejector block out of the rear mold core. The guiding effect of the inclined guide block on the guide block can enable the ejector block to complete lateral movement, thereby completing the effective ejection of the product and the demoulding effect of the side threaded column, avoiding the occurrence of product ejection problems, and the ejector block has a stable structure and high strength, which can prevent the mold from getting stuck and help improve production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a straight top side core pulling composite structure proposed by the utility model Figure 1 ;

[0019] Figure 2 This is a schematic diagram of a straight top side core-pulling composite structure proposed by the utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of a straight top side core-pulling composite structure top block proposed by the utility model Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the structure of a straight top side core-pulling composite structure top block proposed by the utility model Figure 2 .

[0022] In the figure: 1, rear mold frame; 2, rear mold core; 3, mounting block; 4, guide block; 401, oblique guide block; 5, ejector plate; 501, through hole; 6, bottom plate; 7, rear cover plate; 8, ejector block; 801, oblique guide groove; 802, guide groove; 9, ejector rod; 901, slider; 902, limit plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Example:

[0026] Reference Figure 1-Figure 4A straight top side core-pulling composite structure comprises a rear mold frame 1, in which a rear mold core 2 is fixedly arranged, and further comprises: a guide block 4, one end of which is fixedly connected to the bottom of the rear mold frame 1; a push rod 9, which is slidably connected to the rear mold frame 1; a top block 8 is slidably connected to the rear mold core 2, wherein an oblique guide groove 801 is opened on one side surface of the top block 8, and the cross section of the oblique guide groove 801 is a T-shaped structure, and an oblique guide block 401 matching the oblique guide groove 801 is fixedly arranged on the guide block 4, One end of the ejector rod 9 is against the ejector block 8, and an insert is fixedly provided on the other side of the ejector block 8. During demoulding, the ejector block 8 is pushed to slide by the ejector rod 9. Under the guidance of the inclined guide block 401 on the guide block 4, the ejector block 8 slides along the inclined guide block 401, so that the ejector block 8 presents an inclined sliding effect. In this process, not only can the product be ejected from the rear mold core 2, but the threaded column on the side of the product can also be demoulded from the ejector block 8, thereby avoiding the situation where the product is not ejected smoothly and the mold is stuck, thereby improving the production quality.

[0027] When in use, the ejector block 8 is pushed out of the rear mold core 2 by the ejector rod 9, and the guiding effect of the inclined guide block 401 on the guide block 4 can enable the ejector block 8 to complete lateral movement, thereby completing the effective ejection of the product and the demoulding effect of the side threaded column, avoiding the occurrence of product ejection problems, and the ejector block 8 has a stable structure and high strength, which can prevent the mold from getting stuck and help improve production quality; by providing a T-shaped guide groove 802 at the bottom of the ejector block 8, a slider 901 matching the guide groove 802 is fixedly provided on the ejector rod 9, which can ensure the reliable lateral movement of the ejector block 8, prevent it from detaching from or interfering with the ejector rod 9, and affect normal use, thereby improving stability during use.

[0028] Reference Figure 4 A guide groove 802 with a T-shaped cross-section is provided at the bottom of the ejector block 8, the opening direction of the guide groove 802 is horizontal and perpendicular to the axis of the ejector rod 9, a slider 901 is fixedly provided at one end of the ejector rod 9, the slider 901 is slidably connected in the guide groove 802, and the end face of the slider 901 away from the ejector rod 9 is abutted against the top of the guide groove 802. When in use, by providing the guide groove 802 on the ejector block 8 and fixing the slider 901 on the ejector rod 9, on the one hand, it is convenient for the ejector rod 9 to push the ejector block 8 out of the rear mold core 2, and on the other hand, when the ejector block 8 moves laterally along the inclined guide block 401, the slider 901 can slide in the guide groove 802, thereby reducing the interference of the ejector rod 9 on the ejector block 8 and improving the remote motion effect of the ejector block 8.

[0029] Reference Figure 1 and Figure 2A mounting block 3 is fixedly provided on the end surface of the rear mold frame 1 away from the rear mold core 2, and the mounting blocks 3 are preferably symmetrically provided in two groups. When in use, by fixing the mounting blocks 3 on the rear mold frame 1, reliable sliding of the ejector plate 5 and the bottom plate 6 can be ensured, thereby improving the use effect.

[0030] Reference Figure 1 and Figure 2 A pin plate 5 is slidably arranged between the two groups of mounting blocks 3, and a bottom plate 6 is fixedly arranged on the pin plate 5. The two side surfaces of the pin plate 5 and the bottom plate 6 are respectively abutted against the inner wall of the mounting block 3, so that the pin plate 5 and the bottom plate 6 can slide reliably and avoid deflection, which affects normal use. A limit plate 902 is fixedly arranged at the other end of the ejector rod 9, and the limit plate 902 is located between the bottom plate 6 and the pin plate 5. When in use, the pin plate 5 and the bottom plate 6 of the mold are ejected under the action of the pull rod of the injection molding machine. Because the limit plate 902 on the ejector pin 9 is fixed between the ejector plate 5 and the bottom plate 6, during the ejection process, since the guide block 4 is fixed in the rear mold frame 1, and the guide block 4 is designed with an inclined guide block 401 with an outer guide of 1 to 5 degrees, preferably 3 degrees, and a T-shaped feature, a 3-degree inner guide inclined guide groove 801 with a T-shaped feature is also opened on the side of the ejector block 8. The slider 901 at the top of the ejector pin 9 and the guide groove 802 at the bottom of the ejector block 8 are also designed with T-shaped features, and the slider 901 can move horizontally relative to the guide groove 802. Therefore, during the ejection process of the ejector pin 9, while the ejector pin 9 pushes the ejector block 8 to move, the ejector block 8 also completes lateral movement under the action of the guide block 4, thereby completing the effective ejection of the product and the demoulding effect of the threaded column, with a simple structure and reliable demoulding and ejection effects.

[0031] Reference Figure 1 and Figure 2 A through hole 501 is provided on the ejector plate 5, and a countersunk hole is provided on the end surface of the through hole 501 close to the bottom plate 6. The other end of the ejector rod 9 passes through the through hole 501, so that the limit plate 902 is located in the countersunk hole, and the end surface of the limit plate 902 away from the ejector rod 9 is abutted against the bottom plate 6. When in use, the limit plate 902 is fixedly provided on the ejector rod 9 so that the limit plate 902 is located between the ejector plate 5 and the bottom plate 6, which is convenient for driving the ejector rod 9 to slide and improve the ejection effect.

[0032] Reference Figure 1 and Figure 2 A rear cover plate 7 is fixedly provided on the end face of the mounting block 3 away from the rear mold frame 1, and the end face of the bottom plate 6 away from the ejector plate 5 is abutted against the rear cover plate 7. When in use, by fixing the rear cover plate 7 on the mounting block 3, the bottom plate 6 and the ejector plate 5 can be ensured to slide reliably to prevent them from detaching from the mounting block 3 and affecting normal use.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A straight top side core-pulling composite structure, comprising a rear mold frame (1), wherein a rear mold core (2) is fixedly arranged in the rear mold frame (1), characterized in that: Also includes: A guide block (4), one end of which is fixedly connected to the rear mold frame (1); A push rod (9), wherein the push rod (9) is slidably connected in the rear mold frame (1); The top block (8) is slidably connected in the rear mold core (2). A slanted guide groove (801) is provided on one side of the top block (8), an slanted guide block (401) matching the slanted guide groove (801) is fixedly provided on the guide block (4), one end of the top rod (9) abuts against the top block (8), and an insert is fixedly provided on the other side of the top block (8).

2. A straight top side core-pulling composite structure according to claim 1, characterized in that: A guide groove (802) is provided at the bottom of the top block (8); a slider (901) is fixedly provided at one end of the top rod (9); the slider (901) is slidably connected in the guide groove (802), and the end surface of the slider (901) away from the top rod (9) abuts against the top of the guide groove (802).

3. A straight top side core-pulling composite structure according to claim 2, characterized in that: The cross sections of the inclined guide groove (801) and the guide groove (802) are both T-shaped structures.

4. A straight top side core-pulling composite structure according to claim 1, characterized in that: A mounting block (3) is fixedly arranged on the end surface of the rear mold frame (1) away from the rear mold core (2), and two groups of the mounting blocks (3) are symmetrically arranged.

5. A straight top side core-pulling composite structure according to claim 4, characterized in that: An ejector plate (5) is slidably arranged between the two groups of mounting blocks (3), a bottom plate (6) is fixedly arranged on the ejector plate (5), a limiting plate (902) is fixedly arranged at the other end of the ejector rod (9), and the limiting plate (902) is located between the bottom plate (6) and the ejector plate (5).

6. A straight top side core-pulling composite structure according to claim 5, characterized in that: The ejector plate (5) is provided with a through hole (501), the end surface of the through hole (501) close to the bottom plate (6) is provided with a countersunk hole, the limiting plate (902) is located in the countersunk hole, and the end surface of the limiting plate (902) away from the ejector rod (9) abuts against the bottom plate (6).

7. A straight top side core-pulling composite structure according to claim 5, characterized in that: A rear cover plate (7) is fixedly arranged on the end surface of the mounting block (3) away from the rear mold frame (1).

8. A straight top side core-pulling composite structure according to claim 7, characterized in that: The end surface of the bottom plate (6) away from the ejector plate (5) abuts against the rear cover plate (7).

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