An injection mold with a bidirectional side-slip release structure

Abstract

An injection mold with a bidirectional side-sliding demolding structure includes a front mold plate and a rear mold plate, an A plate connected to the front mold plate, a B plate connected to the rear mold plate, and an ejector plate disposed between the B plate and the rear mold plate. The inner side of the A plate has a front mold core, and the inner side of the B plate has a rear mold core. The front and rear mold cores form a cavity for product injection molding when the mold is closed. The front mold core has a mounting cavity machined within it, and two side-sliding sliders that can move closer to or further away from each other are located within the mounting cavity. The front mold core also has a connecting channel on its side that is perpendicularly connected to the mounting cavity. A driver is located on the outer side of the A plate at a position corresponding to the connecting channel. The driver's transmission component passes through the A plate and the connecting channel to control the sliding of the two side-sliding sliders, thereby achieving mold closing and opening / closing of the two side-sliding sliders at the shoulder position of the nozzle of the cover part. This bidirectional side-sliding demolding structure solves the problem of difficulty in demolding injection molded products with irregular structural designs.

Description

Technical Field

[0001] This utility model relates to an injection mold with a bidirectional side-slip demolding structure. Background Technology

[0002] Plastic products are usually injection molded in injection molds. After molding, the moving mold of the injection mold separates from the fixed mold. The product moves with the moving mold and is then ejected by the ejector plate and ejector pins on the moving mold side, realizing the ejection process of the injection molded product on the moving mold.

[0003] Figure 8 The product in question is a cover part 100, which has a circumferential shoulder 300 on the wall of the tube 200 on its upper surface. Traditional demolding methods can only achieve oblique core pulling demolding, making demolding of this cover part difficult. Therefore, it is necessary to develop an injection mold with a two-way side sliding demolding structure to meet the needs of actual production. Utility Model Content

[0004] To address the shortcomings mentioned above, this utility model provides an injection mold with a bidirectional side-slip demolding structure.

[0005] To achieve the above objectives, this utility model provides an injection mold with a bidirectional side-sliding demolding structure, including a front mold plate and a rear mold plate arranged one in front of the other, an A plate connected to the front mold plate, a B plate connected to the rear mold plate, and an ejector plate disposed between the B plate and the rear mold plate. The inner side of the A plate is provided with a front mold core, and the inner side of the B plate is provided with a rear mold core. The front mold core and the rear mold core form a cavity for product injection molding in the mold-closed state. The front mold core has a mounting cavity machined in it, and two side-sliding sliders that can move closer to or further away from each other are provided in the mounting cavity. The front mold core also has a connecting channel on its side that is perpendicularly connected to the mounting cavity. The A plate has a driver on its outer side at a position corresponding to the connecting channel. The transmission component of the driver passes through the A plate and the connecting channel to realize the sliding control of the two side-sliding sliders, thereby realizing the mold closing and mold opening of the two side-sliding sliders at the shoulder position of the nozzle of the cover part.

[0006] As a further improvement to the solution, the lateral sliding slider is in the shape of a right trapezoid. Abutment portions are formed on both the upper and lower bases of the right trapezoid. A semicircle that can hug the outer wall of the connecting pipe is formed on the height of the right trapezoid. A sloping rail a is formed on the waist of the right trapezoid. A top insert and a side insert are provided inside the mounting cavity. Oppositely arranged sliding guide portions are formed on the mounting cavity and the side insert. The abutment portions rest on the sliding guide portions. The top insert constrains the position of the lateral sliding slider at the top, so that the lateral sliding slider can only slide along the direction of the sliding guide portions.

[0007] As a further improvement to the solution, the actuator is a hydraulic cylinder, and the transmission component includes a transmission block disposed at the output shaft end of the hydraulic cylinder and two hooks disposed on the transmission block. The free end of the hook has a cutting portion that matches the waist of the right trapezoid and forms a sloping rail b on the cutting portion that is slidably connected to the sloping rail a.

[0008] As a further improvement to the solution, the transmission block and the driver are assembled and connected using an I-beam groove structure, and the transmission block and the hook are also assembled and connected using an I-beam groove structure.

[0009] As a further improvement to the design, the actual assembly accuracy at the I-beam groove is controlled at 0.05~0.1mm, or 5~10 microns.

[0010] The advantages of this utility model over the prior art are as follows: a bidirectional side-sliding demolding structure is designed, and an injection mold with a bidirectional side-sliding demolding structure is provided, which solves the problem of difficulty in demolding injection molded products with irregular structural designs. Attached Figure Description

[0011] Figure 1 This is a perspective view of an injection mold with a bidirectional side-slip release structure. Figure 2 This is a schematic diagram of the bidirectional side-slip demolding structure involved; Figure 3 This is an exploded view of the bidirectional side-slip demolding structure involved. Figure 4 This is a schematic diagram of the side inserts being mounted on the front mold core. Figure 5 This is a schematic diagram showing the installation of the side insert on the front mold core. Figure 6 This is a schematic diagram of the transmission connection between the driver and the lateral slider; Figure 7 This is a schematic diagram of the transmission connection between the lateral sliding slider and the hook involved; Figure 8 This is a schematic diagram of the hood parts involved.

[0012] In the diagram: 1. Front mold plate; 2. Plate A; 3. Plate B; 4. Rear mold plate; 5. Ejector plate; 6. Front mold core; 7. Mounting cavity; 8. Side sliding block; 9. Connecting channel; 10. Driver; 11. Transmission component; 111. Transmission block; 112. Hook; 113. Cutting part; 114. Sloping rail b; 12. Alignment part; 13. Sloping rail a; 14. Top insert; 15. Side insert; 16. Sliding guide part; 100. Engine cover parts; 200. Connecting pipe; 300. Shoulder. Detailed Implementation

[0013] like Figures 1-7 As shown, an injection mold with a bidirectional side-sliding demolding structure according to an embodiment of the present invention includes a front mold plate 1 and a rear mold plate 4 arranged one in front of the other, an A plate 2 connected to the front mold plate 1, a B plate 3 connected to the rear mold plate 4, and an ejector plate 5 disposed between the B plate 3 and the rear mold plate 4. A front mold core 6 is provided on the inner side of the A plate 2, and a rear mold core is provided on the inner side of the B plate 3. The front mold core 6 and the rear mold core form a cavity for product injection when the mold is closed. An installation cavity 7 is machined in the front mold core 6, and two side-sliding sliders 8 that can move closer to or further away from each other are provided in the installation cavity 7. The front mold core 6 also has a side part. A connecting channel 9 is perpendicularly connected to the mounting cavity 7. A driver 10 is provided on the outer side of plate A 2 at a position corresponding to the connecting channel 9. The transmission component 11 of the driver 10 passes through plate A 2 and the connecting channel 9 to achieve sliding control of the two sliding blocks 8, thus realizing the mold closing and opening / closing of the two sliding blocks 8 at the shoulder 300 position of the connecting pipe 200 of the cover part 100. The sliding blocks 8 are in the shape of a right-angled trapezoid. Abutment portions 12 are formed on both the upper and lower bases of the right-angled trapezoid. A semicircle that can hug the outer wall of the connecting pipe 200 is formed on the height line of the right-angled trapezoid. The waist of the right-angled trapezoid... The mounting cavity 7 has a sloping rail a13. A top insert 14 and a side insert 15 are provided within the mounting cavity 7. Sliding guide portions 16 are formed on the mounting cavity 7 and the side insert 15, respectively. The abutment portion 12 rests on the sliding guide portion 16. The top insert 14 constrains the position of the lateral slider 8 at the top, ensuring that the lateral slider 8 can only slide along the direction of the sliding guide portion 16. The driver 10 is a hydraulic cylinder. The transmission component 11 includes a transmission block 111 disposed at the output shaft end of the hydraulic cylinder and two hooks 112 disposed on the transmission block 111. The hooks 112... The device has a cutting part 113 at one end that matches the waist of the right trapezoid, and a slanted rail b114 is formed on the cutting part 113 that slides and connects with the slanted rail a13. The transmission block 111 and the driver 10 are assembled and connected by an I-beam groove structure, and the transmission block 111 and the hook 112 are also assembled and connected by an I-beam groove structure. The assembly accuracy at the I-beam groove is actually controlled at 0.05~0.1mm, that is, 5~10 microns. In this way, when the axial movement of the hydraulic cylinder is transmitted to the two hooks 112, the two hooks 112 can maintain relative parallelism and avoid possible jamming.

[0014] A bidirectional side-sliding demolding structure was designed, and an injection mold with a bidirectional side-sliding demolding structure was provided, which solved the problem of demolding difficulties for injection molded products with irregular structural designs.

[0015] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings; The assembly process of the bidirectional side-sliding demolding structure is as follows: The two sliding blocks 8 are in a close-fitting state. The inclined rail b114 of the hook 112 first forms a mating connection with the inclined rail a13 of the side sliding block 8. The two hooks 112 are in a close-fitting state and enter the mounting cavity 7 through the connecting channel 9, so that the front abutment part 12 of the side sliding block 8 rests on the sliding guide part 16 at the mounting cavity 7. Then, the two hooks 112 are manually pushed inward to separate them, forming a gap between them. The side insert 15 is installed at this gap, and the rear abutment part 12 of the side sliding block 8 rests on the sliding guide part 16 of the side insert 15. Then, the top insert 14 is installed from the top position of the mounting cavity 7. The two side sliding blocks 8 are limited to slide only along the direction of the sliding guide part 16. Then, the transmission block 111 and the driver 10 are installed in sequence to complete the installation. Considering the feasibility of assembly, the side insert 15 and the front mold core 6 must be two independent parts that are assembled into a whole.

[0016] The work process is as follows: See Figure 3 At this time, it is the state of the two-way side-sliding demolding structure during injection molding. When the injection molding is completed and ready for demolding, the driver 10 (i.e., hydraulic cylinder) drives the two hooks 112 to slide outward. The inclined rail b114 of the hook 112 and the inclined rail a13 of the side sliding slider 8 are subjected to inclined surface extrusion, so that the two side sliding sliders 8 slide along the direction of the sliding guide 16 and separate to a set distance (greater than the size of the shoulder 300). After that, with the demolding process of the entire injection mold, the cover part 100 can be easily demolded.

[0017] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An injection mold with a bidirectional side-sliding demolding structure, comprising a front mold plate (1) and a rear mold plate (4) arranged one in front of the other, an A plate (2) connected to the front mold plate (1), a B plate (3) connected to the rear mold plate (4), and an ejector plate (5) disposed between the B plate (3) and the rear mold plate (4), wherein a front mold core (6) is provided on the inner side of the A plate (2), and a rear mold core is provided on the inner side of the B plate (3), wherein the front mold core (6) and the rear mold core form a cavity for product injection molding in the mold-closed state, characterized in that: The front mold core (6) has a mounting cavity (7) and two side sliding sliders (8) that can move closer or further apart. The front mold core (6) also has a connecting channel (9) that is perpendicular to the mounting cavity (7) on its side. The A plate (2) has a driver (10) on its outer side at the corresponding position of the connecting channel (9). The transmission component (11) of the driver (10) passes through the A plate (2) and the connecting channel (9) to realize the sliding control of the two side sliding sliders (8), thereby realizing the mold closing and mold opening of the two side sliding sliders (8) at the shoulder (300) position of the nozzle (200) of the cover part (100).

2. The injection mold with a bidirectional side-slip demolding structure according to claim 1, characterized in that: The lateral sliding block (8) is in the shape of a right trapezoid. The upper and lower bases of the right trapezoid are formed with abutment parts (12). A semicircle that can hug the outer wall of the pipe (200) is formed on the height line of the right trapezoid. A sloping rail a (13) is formed on the waist of the right trapezoid. A top insert (14) and a side insert (15) are provided in the mounting cavity (7). Sliding guide parts (16) are formed on the mounting cavity (7) and the side insert (15). The abutment part (12) rests on the sliding guide part (16). The top insert (14) constrains the position of the lateral sliding block (8) at the top, so that the lateral sliding block (8) can only slide along the direction of the sliding guide part (16).

3. The injection mold with a bidirectional side-slip demolding structure according to claim 2, characterized in that: The driver (10) is a hydraulic cylinder, and the transmission component (11) includes a transmission block (111) disposed at the output shaft end of the hydraulic cylinder and two hooks (112) disposed on the transmission block (111). The free end of the hook (112) has a cutting part (113) that matches the waist of the right trapezoid and forms a sloping rail b (114) on the cutting part (113) that is slidably connected to the sloping rail a (13).

4. An injection mold with a bidirectional side-slip demolding structure according to claim 3, characterized in that: The transmission block (111) and the driver (10) are connected by an I-shaped groove structure, and the transmission block (111) and the hook (112) are also connected by an I-shaped groove structure.

5. An injection mold with a bidirectional side-slip demolding structure according to claim 4, characterized in that: The actual assembly precision at the I-beam groove is controlled at 0.05~0.1mm, or 5~10 microns.

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