A precision machining fixture for injection molds

Abstract

The utility model discloses a precision machining fixture for injection molds, which relates to the technical field of injection mold fixtures, including a fixed seat, one end of the fixed seat is connected to the mold, one side of the mold is provided with a lifting rod connected by an electric hoist, the bottom end of the lifting rod is fixed with a support block, and a transmission mechanism is provided on the support block; the transmission mechanism includes a transmission unit clamping unit; the transmission unit is used to provide thrust for the movement of the clamping unit. The utility model is provided with a transmission mechanism, and when the lifting rod is used to drive the fixture to take out the injection molded model, the movable block is pushed to move by starting the cylinder, thereby synchronously driving multiple movable rods and support rods to translate outward, so that the support rods are in contact with the inner side of the model, and the support rods are rotatably connected to the movable rods to increase the contact area between the support rods and the model, thereby further increasing the connection force and reducing the extrusion force on the model.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold clamps, in particular to a precision machining clamp for an injection mold. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. Injection molding is suitable for mass production and complex-shaped products and other molding and processing fields.

[0003] In the prior art, after the model is injection molded, a clamp is needed to take out the molded model. The existing method of taking out generally uses a mechanical arm to drive the clamp to move, and uses an internal support method to take it out. The existing clamp support method is mostly an eight-shaped structure, so that the end of the clamp contacts the inner cavity of the model, the contact area is small, the pressure is large, and it is easy to cause damage to the inner side of the model. For this reason, the utility model proposes a precision machining clamp for injection molds. Utility Model Content

[0004] The purpose of the utility model is to provide a precision machining fixture for injection molds in order to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a precision machining fixture for injection molds, comprising a fixed seat, one end of the fixed seat is connected to the mold, one side of the mold is provided with a lifting rod connected by an electric hoist, the bottom end of the lifting rod is fixed with a support block, and a transmission mechanism is provided on the support block;

[0006] The transmission mechanism comprises a transmission unit and a clamping unit;

[0007] The transmission unit is used to provide thrust for the movement of the clamping unit;

[0008] The clamping unit is used to provide a limiting force for the movement of the model.

[0009] As a further solution of the utility model: the transmission unit includes a cylinder, a fixed rod, a movable block, a push rod, a positioning rod, and a spring;

[0010] The cylinder is installed at one end of the support block and extends to the inner cavity of the support block, and the cylinder is used to push the movable block to move;

[0011] The fixing rod is fixed to the other end of the supporting block, and the fixing rod is used to provide support for the movement of the positioning rod and the movable block;

[0012] The positioning rod is fixed to the inner wall of the fixed rod, and the positioning rod is used to provide guidance for the axial movement of the movable block;

[0013] The movable block is axially slidably sleeved on the outer wall of the positioning rod, and the movable block is used to drive the push rod to move;

[0014] The push rod is rotatably connected to the outer wall of the movable block, and the push rod is used to push the movable rod to move;

[0015] The two ends of the spring are respectively clamped on the inner wall of the fixing rod and the outer wall of the movable block, and the spring is used to provide elastic force for resetting the movable block.

[0016] As a further solution of the utility model: the clamping unit includes a movable rod and a support rod;

[0017] The movable rod is vertically slidably installed in the inner cavity of the fixed rod and extends to the outside of the fixed rod, and the movable rod is used to drive the support rod to move synchronously;

[0018] The support rod is rotatably connected to the end of the movable rod, and the support rod is used to provide limiting support for the movement of the model.

[0019] As a further solution of the utility model: the number of the movable rods is four, and the four movable rods are evenly distributed on the outer wall of the fixed rod.

[0020] As a further solution of the utility model: the end of the movable rod is rotatably connected to the outer wall of one end of the push rod, and the number of the push rods is the same as the number of the movable rods.

[0021] As a further solution of the utility model: the inner cavity of the fixed rod is formed with a movable space for the push rod to rotate, and the end of the movable block is in contact with the end of the cylinder but not connected.

[0022] As a further solution of the utility model: the inner cavity of the movable block is formed with a sliding groove for the axial movement of the positioning rod, and the outer wall of the positioning rod is in a "T"-shaped structure as a whole.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] By setting up a transmission mechanism, when using a lifting rod to drive the clamp to remove the injection molded model, the movable block can be pushed to move by starting the cylinder, thereby synchronously driving multiple movable rods and support rods to translate outward, so that the support rods are in contact with the inner side of the model, and the support rods are rotatably connected to the movable rods to increase the contact area between the support rods and the model, thereby further increasing the connection force and reducing the extrusion force on the model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the transmission mechanism of the utility model;

[0027] Figure 3 It is a partial enlarged view of point A of the present utility model.

[0028] In the figure: 1. fixed seat; 2. mold; 3. lifting rod; 4. support block; 5. transmission mechanism; 501. cylinder; 502. fixed rod; 503. movable rod; 504. movable block; 505. push rod; 506. positioning rod; 507. spring; 508. support rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 3 In an embodiment of the utility model, a precision machining fixture for an injection mold includes a fixed seat 1, one end of the fixed seat 1 is connected to a mold 2, one side of the mold 2 is provided with a lifting rod 3 connected by an electric hoist, the bottom end of the lifting rod 3 is fixed with a support block 4, and a transmission mechanism 5 is provided on the support block 4;

[0031] The transmission mechanism 5 includes a transmission unit and a clamping unit;

[0032] The transmission unit is used to provide thrust for the movement of the clamping unit;

[0033] The clamping unit is used to provide a limiting force for the movement of the model;

[0034] The transmission unit includes a cylinder 501, a fixed rod 502, a movable block 504, a push rod 505, a positioning rod 506, and a spring 507;

[0035] The cylinder 501 is installed at one end of the support block 4 and extends to the inner cavity of the support block 4. The cylinder 501 is used to push the movable block 504 to move;

[0036] The fixed rod 502 is fixed to the other end of the support block 4, and the fixed rod 502 is used to provide support for the movement of the positioning rod 506 and the movable block 504;

[0037] The positioning rod 506 is fixed to the inner wall of the fixed rod 502, and the positioning rod 506 is used to provide a guide for the axial movement of the movable block 504;

[0038] The movable block 504 is axially slidably sleeved on the outer wall of the positioning rod 506, and the movable block 504 is used to drive the push rod 505 to move;

[0039] The push rod 505 is rotatably connected to the outer wall of the movable block 504, and the push rod 505 is used to push the movable rod 503 to move;

[0040] The two ends of the spring 507 are respectively clamped on the inner wall of the fixed rod 502 and the outer wall of the movable block 504, and the spring 507 is used to provide elastic force for the reset of the movable block 504;

[0041] The clamping unit includes a movable rod 503 and a supporting rod 508;

[0042] The movable rod 503 is vertically slidably installed in the inner cavity of the fixed rod 502 and extends to the outside of the fixed rod 502. The movable rod 503 is used to drive the support rod 508 to move synchronously;

[0043] The support rod 508 is rotatably connected to the end of the movable rod 503, and the support rod 508 is used to provide limiting support for the movement of the model.

[0044] In this embodiment: when using this device, the lifting rod 3 and the supporting block 4 are moved to one side of the mold 2 by using an electric hoist. At this time, the fixed rod 502 will be in the inner cavity of the internal model of the mold 2. At this time, by starting the cylinder 501, the cylinder 501 will drive the output end to move, and the output end of the fixed rod 502 moves along the inner cavity of the cylinder 501 and gives an extrusion thrust to the movable block 504. The movable block 504 subjected to the extrusion force will move axially along the outer wall of the positioning rod 506 and give an extrusion force to the spring 507. The moving movable block 504 will synchronously drive one end of the push rod 505 to move axially, and the other end of the push rod 505 is due to the contact with the movable block 507. When the end of the rod 503 is rotatably connected, the other end of the push rod 505 will give a thrust to the movable rod 503 to move outward. At this time, the push rod 505 as a whole will move from an inclined state to a vertical state, and the moving movable rod 503 will synchronously drive the support rod 508 to move until the outer wall of the support rod 508 and the inner cavity of the model are squeezed out, completing the connection limit of the support rod 508 and the inner cavity of the model. At this time, the electric hoist can be used again to drive the lifting rod 3 and the support block 4 back to their original positions to complete the material removal operation of the model. Compared with the traditional figure eight clamping, this structure increases the contact area with the model, reduces the pressure on the model, and improves the product quality.

[0045] Please refer to Figure 1-Figure 3There are four movable rods 503, which are evenly distributed on the outer wall of the fixed rod 502. The end of the movable rod 503 is rotatably connected to the outer wall of one end of the push rod 505. The number of the push rods 505 is the same as the number of the movable rods 503. The inner cavity of the fixed rod 502 is formed with a movable space for the push rod 505 to rotate. The end of the movable block 504 is in contact with the end of the cylinder 501 but not connected. The inner cavity of the movable block 504 is formed with a slide groove for axial movement of the positioning rod 506. The outer wall of the positioning rod 506 is a "T"-shaped structure as a whole.

[0046] In this embodiment: this structure allows the cylinder 501 to be quickly disassembled when maintenance and repair of the cylinder 501 is required, without the need to release the connection between the end of the cylinder 501 and the movable block 504, thereby further improving work efficiency.

[0047] What is described above 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 precision machining fixture for injection molds, comprising a fixed seat (1), one end of the fixed seat (1) is connected to a mold (2), one side of the mold (2) is provided with a lifting rod (3) connected via an electric hoist, the bottom end of the lifting rod (3) is fixed with a support block (4), characterized in that: A transmission mechanism (5) arranged on the support block (4); The transmission mechanism (5) comprises a transmission unit and a clamping unit; The transmission unit is used to provide thrust for the movement of the clamping unit; The clamping unit is used to provide a limiting force for the movement of the model.

2. The precision machining fixture for injection mold according to claim 1, characterized in that: The transmission unit comprises a cylinder (501), a fixed rod (502), a movable block (504), a push rod (505), a positioning rod (506), and a spring (507); The cylinder (501) is installed at one end of the support block (4) and extends to the inner cavity of the support block (4), and the cylinder (501) is used to push the movable block (504) to move; The fixed rod (502) is fixed to the other end of the support block (4), and the fixed rod (502) is used to provide support for the movement of the positioning rod (506) and the movable block (504); The positioning rod (506) is fixed to the inner wall of the fixed rod (502), and the positioning rod (506) is used to provide guidance for the axial movement of the movable block (504); The movable block (504) is axially slidably sleeved on the outer wall of the positioning rod (506), and the movable block (504) is used to drive the push rod (505) to move; The push rod (505) is rotatably connected to the outer wall of the movable block (504), and the push rod (505) is used to push the movable rod (503) to move; The two ends of the spring (507) are respectively clamped on the inner wall of the fixed rod (502) and the outer wall of the movable block (504), and the spring (507) is used to provide elastic force for resetting the movable block (504).

3. The precision machining fixture for injection mold according to claim 1, characterized in that: The clamping unit comprises a movable rod (503) and a supporting rod (508); The movable rod (503) is vertically slidably installed in the inner cavity of the fixed rod (502) and extends to the outside of the fixed rod (502), and the movable rod (503) is used to drive the support rod (508) to move synchronously; The support rod (508) is rotatably connected to the end of the movable rod (503), and the support rod (508) is used to provide limiting support for the movement of the model.

4. The precision machining fixture for injection mold according to claim 3, characterized in that: The number of the movable rods (503) is four, and the four movable rods (503) are evenly distributed on the outer wall of the fixed rod (502).

5. The precision machining fixture for injection mold according to claim 3, characterized in that: The end of the movable rod (503) is rotatably connected to the outer wall of one end of the push rod (505), and the number of the push rods (505) is the same as the number of the movable rods (503).

6. The precision machining fixture for injection mold according to claim 2, characterized in that: The inner cavity of the fixed rod (502) is formed with a movable space for the push rod (505) to rotate, and the end of the movable block (504) is in contact with the end of the cylinder (501) but not connected.

7. The precision machining fixture for injection mold according to claim 2, characterized in that: The inner cavity of the movable block (504) is formed with a sliding groove for the axial movement of the positioning rod (506), and the outer wall of the positioning rod (506) is in a "T"-shaped structure as a whole.

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