Double-row needle low-pressure injection mold

Abstract

The utility model discloses a double -row needle low -voltage spare injection mold, including thimble, thimble board, jacking device, rotating device, sliding block device and by the panel of upper and lower in proper order, runner plate, upper die plate, lower die plate, square iron block and bottom plate, be equipped with upper die core on the upper die plate, be equipped with lower die core on the lower die plate, upper die core and lower die core correspond setting, and form and form the first cavity and second cavity of side -by -side distribution, and sliding block device is two, and is located the opposite sides of second cavity respectively, and thimble board is established in square iron block inside, and one end of thimble is fixed on thimble board, and the other end is inserted into second cavity after penetrating lower die plate and lower die core, and jacking device is located the below of lower die core, and is connected with lower die core, and rotating device is connected with lower die core. Through the cooperation of each structure in the mold, the injection of the upper and lower two rows of needles is separated, which is beneficial to the accurate placement and positioning of the two rows of needles, greatly improves the yield of products, thereby is favorable for reducing production cost.

Description

Technical Field

[0001] This utility model relates to an injection mold, and more particularly to a double-row needle low-pressure injection mold. Background Technology

[0002] For low-voltage components with upper and lower rows of pins, due to the double rows of pins and the very thin and long pins, if both rows of pins are injected simultaneously during injection molding, it is difficult to position the upper row of pins during molding. Therefore, it is difficult to ensure the positional accuracy of each pin, resulting in a high product defect rate and greatly increasing labor and production costs. Summary of the Invention

[0003] The purpose of this utility model is to provide a double-row needle low-pressure injection mold that can solve at least one of the above problems.

[0004] According to one aspect of the present invention, a double-row needle low-pressure injection mold is provided, comprising ejector pins, ejector plate, lifting device, rotating device, slider device, and a panel, runner plate, upper template, lower template, square iron block and base plate arranged from top to bottom. The upper template is provided with an upper mold core, and the lower template is provided with a lower mold core. The upper mold core and the lower mold core are correspondingly arranged to form a first cavity and a second cavity arranged side by side. There are two slider devices, which are located on opposite sides of the second cavity. The ejector plate is located inside the square iron block. One end of the ejector pin is fixed to the ejector plate, and the other end passes through the lower template and the lower mold core and extends into the second cavity. The lifting device is located below the lower mold core and is connected to the lower mold core. The rotating device is connected to the lower mold core.

[0005] The beneficial effects of this invention are as follows: By incorporating a lifting device and a rotating device, the lower mold core can be easily ejected upwards. Then, the rotating device drives the lower mold core to rotate, allowing the positions of the first cavity and the second cavity to be switched. Therefore, during injection molding, the lower row of pins of the low-pressure component is first pre-molded and fixed in the first cavity. Subsequently, it is rotated to the position of the second cavity to injection mold and fix the upper row of pins, resulting in a complete product. Thus, through the coordination of the various structures in this mold, the upper and lower rows of pins are injected separately, facilitating precise placement and positioning of the two rows of pins, greatly improving product yield, and thereby reducing production costs.

[0006] In some embodiments, the lifting device includes lifting cylinders, ejector rods, and a top plate. The top plate is located between the lower mold plate and the ejector plate. Two lifting cylinders are fixed to both sides of the lower mold plate, and the piston rods of the lifting cylinders are connected to the top plate. One end of the ejector rod is fixed to the top plate, and the other end is fixed to the lower mold core. Thus, by extending and retracting the piston rods of the lifting cylinders, the top plate and ejector rod can be moved up and down accordingly, facilitating the upward or downward movement of the lower mold core.

[0007] In some embodiments, the rotating device includes a drive cylinder, a rack, and a gear. The cylinder body of the drive cylinder is fixed to the outside of the lower mold plate. The rack is connected to the piston rod of the drive cylinder, and the gear meshes with the rack, with the gear sleeved on a push rod. Thus, by extending and retracting the piston rod of the drive cylinder, the rack can be moved, causing the gear to rotate relative to the rack. This, in turn, drives the lower mold core to rotate via the push rod, satisfying the reversal requirements of the first and second cavities.

[0008] In some embodiments, the slider device includes a slider cylinder, a slider, and a mounting block. The mounting block is fixed to the outside of the lower mold plate, the cylinder body of the slider cylinder is fixed to the mounting block, the slider is connected to the piston rod of the slider cylinder, and the slider is correspondingly positioned with respect to the second cavity. Thus, the slider cylinder can drive the mounting block to move back and forth, allowing the slider to engage with or disengage from the second cavity, meeting the injection molding requirements of the product.

[0009] In some embodiments, the double-row needle low-pressure injection mold also includes a limiting rod, one end of which is fixed to the base plate, and the other end extends through the ejector plate, with the top plate positioned above the limiting rod. Thus, by providing the limiting rod, the lowest position of the top plate can be limited, preventing the top plate from pressing tightly against the ejector plate.

[0010] In some embodiments, the double-row needle low-pressure injection mold further includes guide pillars, a return spring, and a sleeve. One end of the guide pillar is fixed to the base plate, and the other end is fixed to the lower mold plate. The ejector plate and the ejector plate are both sleeved on the guide pillar, and the sleeve is sleeved on the guide pillar. One end of the return spring abuts against the ejector plate, and the other end abuts against the sleeve. Thus, the guide pillar can guide the ejector pins and the ejector plate.

[0011] In some embodiments, the double-row needle low-pressure injection mold also includes a guide rod. One end of the guide rod is fixed to the lower mold plate, and the other end passes through the lower mold plate and mates with the lower mold core and the upper mold core. Thus, by providing a guide rod, the lower mold core and the upper mold core can be guided, ensuring the accuracy of their alignment during mold closing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the molded state of the double-row needle low-pressure injection mold of this utility model; Figure 2 This is a top view of the double-row needle low-pressure injection mold of this utility model; Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure; Figure 4 yes Figure 2 Schematic diagram of the BB cross-section structure; Figure 5This is a schematic diagram of part of the structure of the double-row needle low-pressure injection mold of this utility model; Figure 6 This is a structural schematic diagram of a portion of the double-row needle low-pressure injection mold of this utility model; Figure 7 This is a schematic diagram of the structure of the product obtained by injection molding using the double-row needle low-pressure injection mold of this utility model. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Reference Figures 1-6 A double-row needle low-pressure injection mold includes ejector pins 1, ejector plate 2, lifting device 3, rotating device 4, slider device 5, and a panel 6, runner plate 7, upper mold plate 8, lower mold plate 9, square iron block 10, and base plate 20 arranged from top to bottom. The upper mold plate 8 is provided with an upper mold core 81, and the lower mold plate 9 is provided with a lower mold core 91. The upper mold core 81 and the lower mold core 91 are correspondingly arranged and form a first cavity 30 and a second cavity 40 arranged side by side. There are two slider devices 5, which are located on opposite sides of the second cavity 40. The ejector plate 2 is located inside the square iron block 10. One end of the ejector pin 1 is fixed on the ejector plate 2, and the other end passes through the lower mold plate 9 and the lower mold core 91 and extends into the second cavity 40. The lifting device 3 is located below the lower mold core 91 and is connected to the lower mold core 91. The rotating device 4 is connected to the lower mold core 91.

[0015] In use, the double-row pin low-pressure injection mold of this utility model first places the lower row of pins in the lower mold core 91 of the first cavity 30, and then closes the mold. The lower row of pins is then injection molded and fixed in the first cavity 30 to obtain a semi-finished product. Subsequently, the injection mold is opened, and the semi-finished product is rotated from the first cavity 30 to the second cavity 40. The upper row of pins is placed at the lower mold core 91 position in the second cavity 40, and then the mold is closed again for injection molding. The finished product is obtained by injection molding in the second cavity 40, thus obtaining the double-row pin low-pressure component (such as...). Figure 7 (As shown).

[0016] After the semi-finished product is removed from the first cavity 30, the lifting device 3 pushes the lower mold core 91 upward, causing it to emerge from the lower mold plate 9. Then, the rotating device 4 rotates the lower mold core 91 180°, swapping the positions of the two corresponding cavities. Next, the upper row of pins is placed on the semi-finished product in the second cavity. Then, the slider device 5 slides to both sides of the second cavity 40, and the mold closes, allowing injection molding to occur in the second cavity 40 to obtain the finished product. After injection molding, the upper mold plate 8 moves the upper mold core 81 upward, opening the mold. Then, the ejector plate 2 moves the ejector pins 1 upward, pushing the molded product out of the second cavity 40, thus demolding.

[0017] The lifting device 3 includes lifting cylinders 31, ejector rods 32, and a top plate 33. The top plate 33 is located between the lower mold plate 9 and the ejector plate 2. There are two lifting cylinders 31, which are fixed on both sides of the lower mold plate 9 respectively. The piston rod of the lifting cylinder 31 is connected to the top plate 33. One end of the ejector rod 32 is fixed to the top plate 33, and the other end is fixed to the lower mold core 91. The lifting cylinders 31 are installed inverted, that is, the cylinder body is located above the piston rod.

[0018] When the lower mold core 91 needs to rotate, the lifting device 3 first pushes the lower mold core 91 upward. Specifically, the piston rod of the lifting cylinder 31 is pulled upward, thereby driving the top plate 33 to move upward. When the top plate 33 moves upward, it drives the push rod 32 to move upward. The push rod 32 pushes the lower mold core 91 at the top to move upward, so that the bottom end of the lower mold core 91 exceeds the top end of the lower template 9, which facilitates the subsequent rotation of the lower mold core 91.

[0019] The rotating device 4 includes a drive cylinder 41, a rack 42 and a gear 43. The cylinder body of the drive cylinder 41 is fixed to the outside of the lower template 9. The rack 42 is connected to the piston rod of the drive cylinder 41. The gear 43 is engaged with the rack 42 and is sleeved on the top rod 32.

[0020] After the lower mold core 91 is ejected upwards, the piston rod of the drive cylinder 41 extends, pushing the rack 42 to move. Under the action of the rack 42, the gear 43 rotates. When the gear 43 rotates, it drives the ejector rod 32 to rotate as well. The ejector rod 32 drives the lower mold core 91 to rotate synchronously until the lower mold core 91 rotates 180°. After the lower mold core 91 has rotated, the piston rod of the lifting cylinder 31 pushes downwards in the opposite direction. Through the ejector rod 32, the lower mold core 91 falls back into the lower mold plate 9, facilitating subsequent mold closing.

[0021] The slider device 5 includes a slider cylinder 51, a slider 52, and a mounting block 53. The mounting block 53 is fixed to the outside of the lower mold plate 9 by bolts. The cylinder body of the slider cylinder 51 is fixed to the mounting block 53. The slider 52 is connected to the piston rod of the slider cylinder 51, and the slider 52 is correspondingly set with the second cavity 40. Specifically, when the semi-finished product rotates to the position of the second cavity 40 with the lower mold core 91, after the lower mold core 91 returns to its original position, the piston rod of the slider cylinder 51 extends, pushing the slider 52 to both sides of the second cavity 40, so that the slider 52 mates with the second cavity 40. Subsequently, the upper mold plate moves downward, so that the upper mold core 81 mates with the lower mold core 91 to achieve mold closing. Then, the second cavity is injected with glue to complete the injection molding of the product.

[0022] The double-row needle low-pressure injection mold of this utility model also includes a limiting rod 50. One end of the limiting rod 50 is fixed to the base plate 20, and the other end extends through the ejector plate 2. The top plate 33 is located above the limiting rod 50. By providing the limiting rod 50, the distance between the top plate 33 and the ejector plate 2 can be maintained, so that the ejector plate 2 has a certain space to move upward. This ensures that when the ejector plate 2 moves upward, it can drive the ejector pins 1 to push the product out of the cavity, ensuring normal demolding of the product.

[0023] The double-row needle low-pressure injection mold of this utility model also includes a guide post 60, a return spring 70 and a sleeve 80. One end of the guide post 60 is fixed on the base plate 20 and the other end is fixed on the lower template 9. The ejector plate 2 and the top plate 33 are both sleeved on the guide post 60. The sleeve 80 is sleeved on the guide post 60. One end of the return spring 70 abuts against the ejector plate 2 and the other end abuts against the sleeve 80.

[0024] Therefore, when the ejector plate 2 moves upward, the return spring 70 is compressed, and the ejector pin 1 pushes the product upward. After the product is pushed out, the ejector plate 2 is pushed downward to reset under the rebound force of the return spring 70, thereby resetting the ejector pin and facilitating the next ejection of the product.

[0025] This double-row needle low-pressure injection mold also includes a guide rod 90. One end of the guide rod 90 is fixed to the lower mold plate 9, and the other end passes through the lower mold plate 9 and cooperates with the lower mold core 91 and the upper mold core 81. Therefore, under the guiding action of the guide rod 90, the lower mold core 91 can be accurately fitted onto the guide rod 90, thereby allowing the lower mold core 91 to accurately reset within the lower mold plate. At the same time, when the mold is closed, the upper mold core 81 can be guided by the guide rod 90, thereby enabling the upper mold core 81 and the lower mold core 91 to achieve accurate mold closing, ensuring mold closing accuracy, and thus ensuring the injection molding quality of the product.

[0026] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A double-row needle low-pressure injection mold, characterized in that, It includes an ejector pin (1), an ejector plate (2), an ejector device (3), a rotating device (4), a slider device (5), and a panel (6), a runner plate (7), an upper mold plate (8), a lower mold plate (9), a square iron block (10), and a base plate (20) arranged from top to bottom. The upper mold plate (8) is provided with an upper mold core (81), and the lower mold plate (9) is provided with a lower mold core (91). The upper mold core (81) and the lower mold core (91) are arranged correspondingly to form a first cavity (30) distributed side by side. In the second cavity (40), there are two slider devices (5), which are located on opposite sides of the second cavity (40). The ejector plate (2) is located inside the square iron block (10). One end of the ejector (1) is fixed on the ejector plate (2), and the other end passes through the lower template (9) and the lower mold core (91) and extends into the second cavity (40). The lifting device (3) is located below the lower mold core (91) and is connected to the lower mold core (91). The rotating device (4) is connected to the lower mold core (91).

2. The double-row needle low-pressure injection mold according to claim 1, characterized in that, The lifting device (3) includes a lifting cylinder (31), a push rod (32) and a top plate (33). The top plate (33) is located between the lower template (9) and the ejector plate (2). There are two lifting cylinders (31), which are fixed on both sides of the lower template (9). The piston rod of the lifting cylinder (31) is connected to the top plate (33). One end of the push rod (32) is fixed on the top plate (33), and the other end is fixed on the lower mold core (91).

3. The double-row needle low-pressure injection mold according to claim 2, characterized in that, The rotating device (4) includes a drive cylinder (41), a rack (42) and a gear (43). The cylinder body of the drive cylinder (41) is fixed on the outside of the lower template (9). The rack (42) is connected to the piston rod of the drive cylinder (41). The gear (43) cooperates with the rack (42) and is sleeved on the top rod (32).

4. The double-row needle low-pressure injection mold according to any one of claims 1 to 3, characterized in that, The slider device (5) includes a slider cylinder (51), a slider (52) and a mounting block (53). The mounting block (53) is fixed on the outside of the lower template (9). The cylinder body of the slider cylinder (51) is fixed on the mounting block (53). The slider (52) is connected to the piston rod of the slider cylinder (51). The slider (52) is correspondingly arranged with the second cavity (40).

5. The double-row needle low-pressure injection mold according to claim 3, characterized in that, It also includes a limiting rod (50), one end of which is fixed to the base plate (20), and the other end extends through the ejector plate (2). The top plate (33) is located above the limiting rod (50).

6. The double-row needle low-pressure injection mold according to claim 5, characterized in that, It also includes a guide post (60), a return spring (70) and a sleeve (80). One end of the guide post (60) is fixed on the base plate (20) and the other end is fixed on the lower template (9). The ejector plate (2) and the top plate (33) are both sleeved on the guide post (60). The sleeve (80) is sleeved on the guide post (60). One end of the return spring (70) abuts against the ejector plate (2) and the other end abuts against the sleeve (80).

7. The double-row needle low-pressure injection mold according to claim 6, characterized in that, It also includes a guide rod (90), one end of which is fixed on the lower template (9), and the other end passes through the lower template (9) and cooperates with the lower mold core (91) and the upper mold core (81).

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