Front lifting cushion block injection mold

Abstract

The utility model discloses a front lifting cushion block injection mold which comprises an ejector pin, an ejector pin plate, a rear mold insert pin, and a panel, a plate A, a plate B, a square iron block and a bottom plate which are sequentially arranged from top to bottom, the ejector pin plate is positioned on the inner side of the square iron block, a front mold core is arranged below the plate A, a rear mold core is arranged above the plate B, and the front mold core and the rear mold core are correspondingly arranged to form a cavity; one end of the ejector pin is fixed on the ejector pin plate, the other end of the ejector pin can extend into the cavity, a front mold insert is arranged on the front mold core, the rear mold insert pin is matched with the front mold insert, cooling water pipes are arranged on the front mold core and the rear mold core, and the cooling water pipes are positioned on the periphery of the cavity. When a product is subjected to injection molding in the mold cavity, cooling water can be introduced into the cooling water pipe, and heat on the front mold core and the rear mold core can be taken away in time, so that the product formed in the mold cavity is rapidly cooled, rapid shaping of the product after injection molding is realized, deformation of the product when the product is ejected out by an ejector pin is avoided, and the quality of the product is ensured.

Description

Technical Field

[0001] The utility model belongs to an injection mold for automobile parts, in particular to an injection mold for a front lifting cushion block. Background Art

[0002] The thickness of the front and rear lifting pads of the car is relatively large and the size is uneven, with the maximum thickness reaching about 12mm. Compared with the thickness of conventional injection molded parts of 3 to 5mm, the thickness is significantly increased. Therefore, during injection molding, this type of product is prone to uneven cooling and unstable shaping in thicker areas. During demoulding, thicker areas are prone to deformation, which affects the molding quality of the product. Utility Model Content

[0003] The purpose of the utility model is to provide a front lifting pad injection mold which can solve at least one of the above problems.

[0004] According to one aspect of the utility model, a front lifting pad injection mold is provided, comprising an ejector pin, an ejector pin plate, a rear mold insert, and a panel, an A plate, a B plate, a square iron block and a bottom plate arranged in sequence from top to bottom, the ejector plate is located on the inner side of the square iron block, a front mold core is provided below the A plate, a rear mold core is provided above the B plate, the front mold core and the rear mold core are arranged correspondingly to form a cavity, one end of the ejector pin is fixed on the ejector pin plate, and the other end can be extended into the cavity, a front mold insert is provided on the front mold core, the rear mold insert cooperates with the front mold insert, and cooling water pipes are provided on both the front mold core and the rear mold core, and the cooling water pipes are located on the periphery of the cavity.

[0005] The beneficial effect of the utility model is that by arranging cooling water pipes on the front mold core and the rear mold core, when the product is injection molded in the cavity, cooling water can be introduced into the cooling water pipes, and the heat on the front mold core and the rear mold core can be taken away in time, so that the product molded in the cavity can be quickly cooled, and the product after injection molding can be quickly finalized, so that the product can be prevented from being deformed when being ejected by the ejector, and the quality of the product can be guaranteed.

[0006] In some embodiments, the front lifting pad injection mold further includes a return spring, one end of which is fixed to the ejector plate, and the other end is fixed to the B plate. Thus, by providing the return spring, the ejector plate and the ejector can be easily returned downward.

[0007] In some embodiments, the front lifting pad injection mold further includes a strong reset mechanism, which includes a vertical rod, a first limit block, a second limit block and a swing rod, wherein the first limit block is fixed to the outside of the ejector plate, the second limit block is fixed to the B plate, the first limit block and the second limit block correspond to the opposite sides of the vertical rod respectively, the top of the vertical rod is fixed to the A plate, one end of the swing rod is rotatably connected to the B plate, and the other end is abutted against the vertical rod and can abut against the first limit block. Thus, by providing a strong reset mechanism, the vertical rod can act on the swing rod, which can push the swing rod to rotate downward, and the swing rod acts on the first limit block, thereby pushing the ejector plate downward to reset, thereby avoiding the phenomenon that the reset spring cannot be reset when it is fatigued.

[0008] In some embodiments, a nozzle is provided on the panel, and the nozzle is communicated with the mold cavity, thereby satisfying the injection molding requirements.

[0009] In some embodiments, a buffer pad is provided on the upper end surface of the ejector plate, thereby preventing the ejector plate from hard collision with the B plate through the buffer pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the injection mold of the front lifting cushion block of the utility model.

[0011] Figure 2 The utility model is a schematic diagram of the side structure of the front lifting pad injection mold.

[0012] Figure 3 The utility model is a schematic cross-sectional structure diagram of the front lifting cushion block injection mold.

[0013] Figure 4 The utility model is a schematic structural diagram of cooling water pipes on the front mold core and the rear mold core in the front lifting cushion block injection mold.

[0014] Figure 5 The utility model is a schematic diagram of the structure of cooling water pipes distributed around the periphery of the cavity in the front lifting cushion block injection mold of the utility model.

[0015] Figure 6 It is a structural schematic diagram of a product obtained by injection molding a front lifting cushion block of the utility model. DETAILED DESCRIPTION

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0017] Reference Figure 1 to Figure 5The front lifting pad injection mold comprises an ejector pin 50, an ejector plate 2, a rear mold insert pin 3, and a panel 4, an A plate 5, a B plate 6, a square iron block 7 and a bottom plate 8 arranged in sequence from top to bottom. The ejector plate 2 is located on the inner side of the square iron block 7. A front mold core 9 is provided below the A plate 5, and a rear mold core 10 is provided above the B plate 6. The front mold core 9 and the rear mold core 10 are arranged correspondingly to form a cavity. One end of the ejector pin 50 is fixed on the ejector plate 2, and the other end can extend into the cavity. A front mold insert 20 is provided on the front mold core 9, and the rear mold insert pin 3 cooperates with the front mold insert 20. Both the front mold core 9 and the rear mold core 10 are provided with cooling water pipes 30, and the cooling water pipes 30 are located on the periphery of the cavity. Among them, the inlet and outlet water ends of the cooling water pipe 30 on the front mold core 9 are both located on the A plate 5, and the inlet and outlet water ends of the cooling water pipe 30 on the rear mold core 10 are both located on the B plate 6, which is convenient for the inflow and outflow of cooling water.

[0018] The front lifting pad injection mold of the utility model is used for injection molding the front lifting pad of the automobile (such as Figure 6 As shown in the figure, the mold is closed, the A plate 5 is tightly attached to the B plate 6, the rear mold insert 3 is matched with the front mold insert 20, and the glue is injected into the cavity; the cooling water pipe 30 is always kept flowing with cooling water, so that the temperature of the front mold core 9 and the rear mold core 10 is relatively constant, and the heat can be taken away in time, so that the product can be cooled quickly after pouring, ensuring the molding effect of the product, avoiding the deformation of the ejector pin 50 when ejecting the product, and ensuring the quality of the product.

[0019] When the mold is opened, the A plate 5 opens upward, the front mold insert 20 is separated from the product, and the ejector plate 2 is upward to push the ejector 3 upward to eject the product, thereby achieving demoulding of the product.

[0020] The front lifting pad injection mold also includes a return spring 40, one end of which is fixed on the ejector plate 2, and the other end is fixed on the B plate 6. In actual use, when the ejector plate 2 ejects the product upward, the ejector plate 2 compresses the return spring 40 upward; when the external force acting on the ejector plate 2 is removed, the return spring 40 rebounds, and under the action of the rebound force, the ejector plate 2 is pushed downward to reset, and the ejector 50 is driven downward synchronously.

[0021] The front lifting pad injection mold of the utility model also includes a strong reset mechanism 1, which includes a vertical rod 11, a first limit block 12, a second limit block 13 and a swing rod 14. The first limit block 12 is fixed to the outside of the ejector plate 2, and the second limit block 13 is fixed to the B plate 6. The first limit block 12 and the second limit block 13 correspond to the opposite sides of the vertical rod 11 respectively. The top of the vertical rod 11 is fixed to the A plate 5. One end of the swing rod 14 is rotatably connected to the B plate 6, and the other end is abutted against the vertical rod 11 and can abut against the first limit block 12. Among them, the swing rod 14 is connected to the B plate 6 by a rivet, and the swing rod 14 can rotate around the rivet.

[0022] The first limit block 12 and the second limit block 13 can limit the left and right positions of the vertical rod 11 to prevent the left and right positions of the vertical rod 11 from changing, thereby ensuring that the vertical rod 11 can be smoothly raised and lowered along with the A-plate 5 .

[0023] In actual use, in order to ensure the stability of the force exerted by the strong reset mechanism 1 on the ejector plate 2, there are two strong reset mechanisms 1, which are respectively located on opposite sides of the ejector plate 2 to facilitate the stable action on both sides.

[0024] The specific reset principle of the strong reset mechanism 1 is as follows: when the mold is closed, the A plate 5 moves downward, and the A plate 5 drives the vertical rod 11 to move downward. Since the swing rod 14 is in contact with the vertical rod 11, when the vertical rod 11 moves downward, it pushes the swing rod 14 to swing downward. When the swing rod 14 swings downward to the first limit block 12, the swing rod 14 acts on the first limit block 12 to push the ejector plate 2 to reset downward. By providing the strong reset mechanism 1, when the mold is closed, after the A plate 5 is closed downward in place, the swing rod 14 also pushes the first limit block 12 and the ejector plate 2 downward to reset in place, thereby ensuring that the ejector is reset in place and the normal injection molding of the product in the cavity is ensured.

[0025] In actual use, due to the limitation of the service life of the reset spring 40, after the reset spring 40 has been used for a period of time, the reset spring 40 alone cannot meet the reset requirement of the ejector plate 2, resulting in the ejector 50 not being reset into place. Therefore, by providing a strong reset mechanism 1, the vertical rod 11 acts on the swing rod 14, and the swing rod 14 acts on the first limit block 12, forcing the ejector plate 2 to reset downward, thereby causing the ejector 50 to reset downward, thereby ensuring normal injection molding of the product.

[0026] A nozzle 60 is installed on the panel 4, and the nozzle 60 is communicated with the mold cavity. Thus, by being provided with the nozzle 60, it is convenient to be connected with the injection molding machine, and conveniently inject into the mold cavity.

[0027] The upper end surface of the ejector plate 2 is provided with a buffer pad 70. The buffer pad 70 is a rubber pad. Therefore, by providing the buffer pad 70, when the ejector plate 2 moves upward under the action of an external force, it will not collide with the bottom end of the B plate 6, which plays a buffering role and protects both the ejector plate 2 and the B plate 6.

[0028] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. Front lifting pad injection mold, It is characterized in that The invention comprises an ejector pin (50), an ejector plate (2), a rear mold insert pin (3), and a panel (4), an A plate (5), a B plate (6), a square iron block (7), and a bottom plate (8) arranged in sequence from top to bottom, wherein the ejector plate (2) is located on the inner side of the square iron block (7), a front mold core (9) is provided below the A plate (5), a rear mold core (10) is provided above the B plate (6), the front mold core (9) and the rear mold core (10) are arranged correspondingly to form a cavity, one end of the ejector pin (50) is fixed on the ejector plate (2), and the other end can extend into the cavity, a front mold insert (20) is provided on the front mold core (9), the rear mold insert pin (3) cooperates with the front mold insert (20), and cooling water pipes (30) are provided on both the front mold core (9) and the rear mold core (10), and the cooling water pipes (30) are located on the periphery of the cavity; The front lifting pad injection mold further comprises a return spring (40), one end of the return spring (40) being fixed on the ejector plate (2) and the other end being fixed on the B plate (6); The front lifting pad injection mold also includes a strong reset mechanism (1), which includes a vertical rod (11), a first limit block (12), a second limit block (13) and a swing rod (14), wherein the first limit block (12) is fixed to the outer side of the ejector plate (2), and the second limit block (13) is fixed to the B plate (6). The first limit block (12) and the second limit block (13) respectively correspond to opposite sides of the vertical rod (11), and the top end of the vertical rod (11) is fixed to the A plate (5). One end of the swing rod (14) is rotatably connected to the B plate (6), and the other end abuts against the vertical rod (11) and can abut against the first limit block (12).

2. The front lifting pad injection mold according to claim 1, It is characterized in that The panel (4) is provided with a nozzle (60), and the nozzle (60) is communicated with the mold cavity.

3. The front lifting pad injection mold according to claim 1, It is characterized in that A buffer pad (70) is provided on the upper end surface of the ejector plate (2).

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