Simple positioning elastic structure of injection mold

Abstract

The utility model discloses a simple positioning elastic structure of an injection mold, which comprises a mold base plate A, a mold base plate B, a front mold core, a rear mold core, an insert product and a positioning elastic structure, the mold base plate B is arranged below the mold base plate A, the front mold core is embedded into the bottom of the mold base plate A, the rear mold core is embedded into the top of the mold base plate B, and the insert product is embedded into the mold base plate B; according to the utility model, under the condition that a mold is opened after product injection molding is finished, the movable plate is pushed by the elastic piece to longitudinally move on the fixed plate, so that the positioning assembly and the resetting assembly are driven by the movable plate to longitudinally jack, an insert product can be ejected out of an injection molding groove, and the demolding treatment of the insert product is facilitated; the insert product is preliminarily placed in the injection molding groove, the front mold core makes contact with the reset assembly in advance and is pressed downwards, the reset assembly drives the movable plate to move downwards, the positioning assembly moves downwards along with the movable plate to be reset, the insert product is installed in the injection molding groove, the structure is simple, operation is convenient, and repair and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a simple positioning elastic structure of an injection mold. Background Art

[0002] The simple positioning elastic structure in the injection mold is mainly used to ensure that the various components of the mold can be accurately aligned during the mold closing process, and at the same time provide the necessary elasticity to adapt to the pressure changes during the injection molding process. At present, there are many types of elastic structures, but some of them are complex in structure, and multiple auxiliary parts and other structures are added. In order to improve the production yield of the product at one time, this positioning elastic structure is specially developed. It has simple processing, high production efficiency and low cost; it can effectively improve the original problems of low production efficiency, high cost and low yield. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a simple positioning elastic structure for an injection mold to solve the shortcomings of the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A simple positioning elastic structure for an injection mold comprises a mold base A plate, a mold base B plate, a front mold core, a rear mold core, an insert product and a positioning elastic structure, wherein the mold base B plate is arranged below the mold base A plate, the front mold core is embedded and installed at the bottom of the mold base A plate, the rear mold core is embedded and installed at the top of the mold base B plate, the front mold core and the rear mold core are positioned correspondingly, injection grooves are correspondingly opened on the front mold core and the rear mold core, the insert product is arranged in the injection groove, and the positioning elastic structure is installed on the mold base B plate, and is used for ejecting the insert product from the injection groove through the positioning elastic structure when the mold base A plate and the mold base B plate are separated.

[0006] Preferably, the positioning elastic structure includes a fixed plate, a movable plate, a positioning puzzle, a reset puzzle and an elastic member. The fixed plate is fixedly installed inside the mold base B plate. A limiting groove is provided on the fixed plate. The movable plate is movably installed in the limiting groove. The positioning puzzle and the reset puzzle are installed on the top of the movable plate. The height of the top of the reset puzzle is higher than that of the positioning puzzle. An elastic member is installed at the bottom of the movable plate. The elastic member is used to move the movable plate longitudinally along the limiting groove.

[0007] Preferably, the positioning assembly includes a positioning pin and a positioning pin limit block fixedly connected to the bottom of the positioning pin, the diameter of the positioning pin limit block is larger than the diameter of the positioning pin, and a first through hole for the positioning pin to pass through is provided on the rear mold core, the top of the first through hole extends into the injection molding groove, and a first limiting hole for accommodating the positioning pin limit block is provided at the bottom of the first through hole.

[0008] Preferably, the reset assembly includes a reset needle and a reset needle limit block fixedly connected to the bottom of the reset needle, the diameter of the reset needle limit block is larger than the diameter of the reset needle, and a second through hole for the reset needle to pass through is provided on the rear mold core, the top of the second through hole extends to the end of the rear mold core, and a second limit hole for accommodating the reset needle limit block is provided at the bottom of the second through hole.

[0009] Preferably, the positioning pins and the resetting pins are provided in two groups, and the diameter of the resetting pins is larger than the diameter of the positioning pins.

[0010] Preferably, fixing holes are provided at the corresponding positioning pieces and reset pieces on the movable plate, and the positioning needle limit block and the reset needle limit block are connected and fixed to the movable plate by screws passing through the fixing holes.

[0011] Preferably, an extension portion is provided on the movable plate at a position corresponding to the reset needle limit block.

[0012] Preferably, a receiving groove is provided on the mold base B plate corresponding to the elastic member, the bottom end of the elastic member is fixedly connected to the bottom end of the receiving groove, and the top end of the elastic member is fixedly connected to the extension portion of the movable plate.

[0013] Preferably, two groups of elastic members are provided.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) After the product is injection molded and the mold is opened, the utility model uses an elastic member to push the movable plate to move longitudinally on the fixed plate, thereby driving the positioning pin and the reset pin to be lifted longitudinally by the movable plate, so that the inserted product can be ejected from the injection molding groove, which is helpful for the demolding of the inserted product. When the mold is closed, the inserted product is initially placed in the injection molding groove, and the front mold core is used to contact the reset pin in advance and press downward. The reset pin drives the movable plate to move downward, so that the positioning pin moves downward and is reset, and the inserted product is installed in the injection molding groove. The utility model has a simple structure, convenient operation, and convenient maintenance.

[0016] (2) The positioning assembly and the resetting assembly in the utility model can be detachably mounted on the movable plate, so that the worn positioning assembly and the resetting assembly can be easily replaced, thereby increasing the service life and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a simple positioning elastic structure for an injection mold;

[0018] Figure 2 It is a schematic diagram of the positioning elastic structure;

[0019] Figure 3 Schematic diagram of the split structure for positioning elastic structure;

[0020] Figure 4 It is a schematic diagram of the movable plate structure.

[0021] In the figure: 1. Mold base A plate; 2. Mold base B plate; 3. Front mold core; 4. Rear mold core; 5. Insert product; 6. Positioning elastic structure; 61. Fixed plate; 611. Limiting groove; 62. Movable plate; 621. Extension part; 622. Fixing hole; 63. Positioning assembly; 631. Positioning pin; 632. Positioning pin limit block; 64. Reset assembly; 641. Reset pin; 642. Reset pin limit block; 65. Elastic part. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0023] See also Figure 1-Figure 4 The present embodiment provides a simple positioning elastic structure for an injection mold, including a mold base A plate 1, a mold base B plate 2, a front mold core 3, a rear mold core 4, an insert product 5 and a positioning elastic structure 6. The mold base B plate 2 is arranged below the mold base A plate 1, the front mold core 3 is embedded and installed at the bottom of the mold base A plate 1, and the rear mold core 4 is embedded and installed at the top of the mold base B plate 2. The front mold core 3 and the rear mold core 4 are located in corresponding positions, and injection grooves are correspondingly opened on the front mold core 3 and the rear mold core 4. The insert product 5 is arranged in the injection groove, and the positioning elastic structure 6 is installed on the mold base B plate 2 for positioning the mold base A plate 1 and the mold base A plate 1. When the B plate 2 is separated, the insert product 5 is ejected from the injection molding groove by the positioning elastic structure 6. After the product is injection molded, when the mold is opened, the positioning elastic structure 6 is used to pop it out. After popping out, the insert product 5 is placed in the injection molding groove. When the mold is closed, the front mold core 10 is used to contact the positioning elastic structure 6 in advance and press down to drive the insert product 5 to reset. This can well solve the problem of placing the insert product 5, solve the problems of low product injection molding production efficiency and yield, etc., can prevent the requirements of crushing the mold and injection molding burrs, and improve the safety efficiency of the mold by more than 80%.

[0024] In this embodiment, if Figure 2 and Figure 3As shown, the positioning elastic structure 6 includes a fixed plate 61, a movable plate 62, a positioning piece 63, a reset piece 64 and an elastic member 65. The fixed plate 61 is fixedly installed inside the mold base B plate 2. A limiting groove 611 is provided on the fixed plate 61. The movable plate 62 is movably installed in the limiting groove 611. The positioning piece 63 and the reset piece 64 are installed on the top of the movable plate 62. The positioning piece 63 corresponds to 5 positions of the insert product in the injection groove, and the reset piece 64 corresponds to 3 positions of the front mold core. The height of the top of the reset piece 64 is higher than the positioning piece 63. The elastic member 65 is installed at the bottom of the movable plate 62. The elastic member 65 is used to move the movable plate 62 longitudinally along the limiting groove 611. When the mold base A plate 1 is in a separated state from the mold base B plate 2, the movable plate 62 is pushed to move longitudinally on the fixed plate 61 by the elastic member 65, so that the positioning pin 63 and the reset pin 64 are driven to be lifted longitudinally by the movable plate 62, so that the insert product 5 can be ejected from the injection molding groove, which is helpful for the demoulding of the insert product 5. When the mold is closed, the insert product 5 is initially placed in the injection molding groove, and the front mold core 10 is used to contact the reset pin 64 in advance and press downward. The reset pin 64 drives the movable plate 62 to move downward, so that the positioning pin 63 moves downward and is reset, and the insert product 1 is installed in the injection molding groove. The structure is simple, the operation is convenient, and the maintenance is convenient.

[0025] In this embodiment, if Figure 3 As shown, the positioning assembly 63 includes a positioning pin 631 and a positioning pin limit block 632 fixedly connected to the bottom of the positioning pin 631, the diameter of the positioning pin limit block 632 is larger than the diameter of the positioning pin 631, and a first through hole is provided on the rear mold core 4 for the positioning pin 631 to pass through, the top of the first through hole extends into the injection molding groove, and a first limiting hole for accommodating the positioning pin limit block 632 is provided at the bottom of the first through hole, and the positioning pin 631 corresponds to the insert product 5, which is used to eject and place the insert product 5, and the positioning pin limit block 632 and the first limiting hole are set to limit the moving stroke of the positioning pin 631 to prevent the positioning pin 631 from escaping from the first through hole.

[0026] In this embodiment, if Figure 3 As shown, the reset assembly 64 includes a reset needle 641 and a reset needle limit block 642 fixedly connected to the bottom of the reset needle 641, the diameter of the reset needle limit block 642 is larger than the diameter of the reset needle 641, and a second through hole is provided on the rear mold core 4 for the reset needle 641 to pass through, the top of the second through hole extends to the end of the rear mold core 4, and a second limit hole is provided at the bottom of the second through hole for accommodating the reset needle limit block 642, and the reset needle 641 corresponds to the front mold core 3, so that the front mold core 3 contacts the reset needle 641 when the mold is closed, so as to drive the movable plate 62 and the positioning assembly 63 to reset, and the setting of the reset needle limit block 642 and the second limit hole limits the moving stroke of the reset needle 641 to prevent the reset needle 641 from escaping from the second through hole.

[0027] In this embodiment, if Figure 3 As shown, two groups of positioning pins 63 and resetting pins 64 are provided, and the diameter of the resetting pin 641 is larger than the diameter of the positioning pin 631, which has a better ejection and resetting effect.

[0028] In this embodiment, if Figure 3 and Figure 4 As shown, fixing holes 622 are provided at the corresponding positioning puzzles 63 and reset puzzles 64 on the movable plate 62, and the positioning needle limit block 632 and the reset needle limit block 642 are connected and fixed to the movable plate 62 by screws passing through the fixing holes 622, so that the positioning puzzle 63 and the reset puzzle 64 can be detachably installed with the movable plate 62, which is convenient for replacing the worn positioning puzzle 63 and the reset puzzle 64. The positioning puzzle 63, the reset puzzle 64, the fixed plate 61 and the movable plate 62 are made of steel, with high structural strength, improved service life and reduced cost.

[0029] In this embodiment, if Figure 3 and Figure 4 As shown, an extension portion 621 is provided on the movable plate 62 corresponding to the reset needle limit block 642. The extension portion 621 can better adapt to the installation of the reset assembly 64. A receiving groove is provided on the mold base B plate 2 corresponding to the elastic member 65. The bottom end of the elastic member 65 is fixedly connected to the bottom end of the receiving groove, and the top end of the elastic member 65 is fixedly connected to the extension portion 621 of the movable plate 62. Two groups of elastic members 65 are provided, and the pushing force is more powerful and uniform. The elastic member 65 is preferably a spring. When the mold is opened, the movable plate 62 can be automatically pushed up by the action of the elastic member 65, thereby driving the positioning assembly 63 and the reset assembly 64 to move. The structure is simple and easy to use.

[0030] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A simple positioning elastic structure for an injection mold, comprising a mold base A plate (1), a mold base B plate (2), a front mold core (3), a rear mold core (4), an insert product (5) and a positioning elastic structure (6), characterized in that: The mold base B plate (2) is arranged below the mold base A plate (1), the front mold core (3) is embedded and installed at the bottom of the mold base A plate (1), and the rear mold core (4) is embedded and installed at the top of the mold base B plate (2). The front mold core (3) and the rear mold core (4) are located in corresponding positions, and injection grooves are correspondingly opened on the front mold core (3) and the rear mold core (4). The insert product (5) is arranged in the injection groove, and the positioning elastic structure (6) is installed on the mold base B plate (2) and is used to eject the insert product (5) from the injection groove through the positioning elastic structure (6) when the mold base A plate (1) and the mold base B plate (2) are separated.

2. According to claim 1, a simple positioning elastic structure for injection molds, characterized in that: The positioning elastic structure (6) comprises a fixed plate (61), a movable plate (62), a positioning piece (63), a reset piece (64) and an elastic member (65); the fixed plate (61) is fixedly mounted inside the mold base B plate (2); a limiting groove (611) is provided on the fixed plate (61); the movable plate (62) is movably mounted in the limiting groove (611); the positioning piece (63) and the reset piece (64) are mounted on the top of the movable plate (62); the top of the reset piece (64) is higher than the positioning piece (63); the bottom of the movable plate (62) is mounted with an elastic member (65); the elastic member (65) is used to move the movable plate (62) longitudinally along the limiting groove (611).

3. The simple positioning elastic structure of an injection mold according to claim 2, characterized in that: The positioning assembly (63) includes a positioning pin (631) and a positioning pin limiting block (632) fixedly connected to the bottom of the positioning pin (631), the diameter of the positioning pin limiting block (632) is larger than the diameter of the positioning pin (631), the rear mold core (4) is provided with a first through hole for the positioning pin (631) to pass through, the top of the first through hole extends into the injection molding groove, and the bottom of the first through hole is provided with a first limiting hole for accommodating the positioning pin limiting block (632).

4. The simple positioning elastic structure of an injection mold according to claim 3, characterized in that: The reset assembly (64) comprises a reset needle (641) and a reset needle stop block (642) fixedly connected to the bottom of the reset needle (641); the diameter of the reset needle stop block (642) is larger than the diameter of the reset needle (641); a second through hole for the reset needle (641) to pass through is provided on the rear mold core (4); the top end of the second through hole extends to the end of the rear mold core (4); and a second stop hole for accommodating the reset needle stop block (642) is provided at the bottom of the second through hole.

5. The simple positioning elastic structure of an injection mold according to claim 4, characterized in that: The positioning pins (63) and the resetting pins (64) are provided in two groups, and the diameter of the resetting needle (641) is greater than the diameter of the positioning pin (631).

6. The simple positioning elastic structure of an injection mold according to claim 4, characterized in that: The movable plate (62) is provided with fixing holes (622) at locations corresponding to the positioning assembly (63) and the reset assembly (64), and the positioning needle limit block (632) and the reset needle limit block (642) are connected and fixed to the movable plate (62) by screws passing through the fixing holes (622).

7. The simple positioning elastic structure of an injection mold according to claim 6, characterized in that: An extension portion (621) is provided on the movable plate (62) at a position corresponding to the reset needle limit block (642).

8. The simple positioning elastic structure of an injection mold according to claim 7, characterized in that: A receiving groove is provided on the mold base B plate (2) corresponding to the elastic member (65); the bottom end of the elastic member (65) is fixedly connected to the bottom end of the receiving groove; and the top end of the elastic member (65) is fixedly connected to the extension portion (621) of the movable plate (62).

9. The simple positioning elastic structure of an injection mold according to claim 8, characterized in that: The elastic members (65) are provided in two groups.

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