Punching die female die fixing structure

Abstract

The utility model discloses a stamping die female die fixing structure which comprises a lower die base and a female die and further comprises a female die fixing plate detachably fixed to the lower die base, the middle of the female die fixing plate is provided with a locking part protruding upwards, the locking part is of an annular structure, and the inner side of the locking part is provided with a mounting groove for containing the female die. The die further comprises a locking nut arranged outside the locking part in a sleeving mode, the outer side face of the locking part and the inner side face of the locking nut are conical faces, a nut fixing sleeve is arranged outside the locking nut in a sleeving mode, and the nut fixing sleeve is in threaded connection with the locking nut and is detachably connected with the female die fixing plate at the same time. The die is simple in structure, few steps need to be implemented when the female die is replaced, the female die can be replaced more conveniently, and therefore the female die can be rapidly replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of mold equipment, in particular to a stamping die concave die fixing structure. Background Art

[0002] The stamping die consists of a die and a punch. The die of the stamping die is fixed on the lower die base. Since the die needs to frequently withstand the impact force from the punch during the stamping process, the die is easily damaged and needs to be replaced frequently. In the prior art, the die is fixed by mechanical fixation and bonding. For dies that need to be replaced frequently, a mechanical fixation method that can be quickly replaced is a common method. For example, the open press model JC23-63 uses the Springfield 114A-R0 series die. This fixing method requires the entire lower die to be completely disassembled before the die can be replaced, and the replacement steps are relatively cumbersome. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a stamping die fixing structure which can reduce the difficulty of changing the die and improve the efficiency of changing the die.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a stamping die cavity fixing structure, including a lower die base and a cavity, and also including a cavity fixing plate that can be detachably fixed on the lower die base, the middle part of the cavity fixing plate is provided with an upwardly protruding locking portion, the locking portion is an annular structure, and the inner side of the locking portion is provided with a mounting groove for accommodating the cavity; it also includes a locking nut sleeved on the outside of the locking portion, the outer side surface of the locking portion and the inner side surface of the locking nut are both conical surfaces, and the outer sleeve of the locking nut is provided with a nut fixing sleeve, which is threadably connected to the locking nut and detachably connected to the cavity fixing plate.

[0005] As an improvement to the above solution: it also includes a positioning plate, which is detachably connected to the nut fixing sleeve and pressed against the top of the nut fixing sleeve and the locking nut; the locking nut and the positioning plate form a positioning fit through a matching structure consisting of a socket and a pin.

[0006] As an improvement to the above solution: the die fixing plate and the lower die base, the nut fixing sleeve and the die fixing plate, and the positioning plate and the nut fixing sleeve are all detachably connected through a matching structure consisting of screws and screw holes.

[0007] As an improvement to the above solution: both the top of the die fixing plate and the bottom of the locking nut are provided with limiting steps, and a radial limiting fit is formed between the die fixing plate and the locking nut through the limiting steps.

[0008] As an improvement to the above solution: the edge of the positioning plate extends horizontally to above the die and is pressed against the top of the die.

[0009] The beneficial effects of the present invention are as follows: the present invention improves the fixing structure of the die in the stamping die, provides a die fixing plate with a locking portion on the lower die base, utilizes the mounting groove in the locking portion to install the die, and simultaneously sleeves a locking nut on the locking portion, and the mating surfaces of the locking nut and the locking portion are both set to conical surfaces, and a nut fixing sleeve is threadedly connected to the outer surface of the locking nut, and the locking portion is mated with the conical surface of the locking nut so that the locking portion can be tightened by the locking nut, thereby clamping the die to achieve fixation of the die, and when the die needs to be replaced, it is only necessary to remove the nut locking sleeve from the locking nut to loosen the locking portion, and then the die can be taken out of the mounting groove of the locking portion for replacement. The structure of the present invention is simple, and fewer steps are required to be implemented when replacing the die, which can make the replacement of the die more convenient, thereby achieving rapid replacement of the die. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a cross-sectional view of the utility model;

[0011] Figure 2 It is a cross-sectional view of the die fixing plate;

[0012] Figure 3 A cross-sectional view of the lock nut.

[0013] Marked in the figure: 100-lower die base, 200-die, 300-die fixing plate, 310-locking part, 320-mounting groove, 400-locking nut, 500-nut fixing sleeve, 600-positioning plate. DETAILED DESCRIPTION

[0014] In order to facilitate understanding of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0015] In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", "up", "down", "inside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description. They do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0016] like Figure 1As shown, the stamping die and die fixing structure disclosed in the present invention includes a lower die base 100, a die 200, a die fixing plate 300, a locking nut 400, a nut fixing sleeve 500, and a positioning plate 600. The lower die base 100 serves as the foundation for the lower die in the stamping die and is used to mount and secure the die 200. To facilitate replacement of the die 200, the present invention adds a die fixing plate 300 to the lower die base 100, which is used to mount the die 200.

[0017] Specifically, such as Figure 1 and Figure 2 As shown, the die fixing plate 300 is fixed to the lower die base 100 in a detachable connection manner. A locking portion 310 is provided in the middle of the top surface of the die fixing plate 300. The locking portion 310 is an upwardly protruding annular structure. The locking portion 310 is formed by a circle of vertically arranged arcuate side walls perpendicular to the top surface of the die fixing plate 300. The inner side of the locking portion 310 is a mounting groove 320 that can accommodate the die 200. When installing the die 200, the die 200 is inserted from top to bottom into the mounting groove 320 of the locking portion 310. The outer side surface of the locking portion 310 is a conical surface, so that the longitudinal section of the locking portion 310 presents a trapezoidal shape with a small top and a large bottom. A locking nut 400 is also provided to form a sleeve fit with the locking portion 310, as shown in FIG. Figure 3 As shown, the inner side of the locking nut 400 is a conical surface adapted to the outer side of the locking portion 310; a nut fixing sleeve 500 is also provided to form a threaded fit with the locking nut 400. The nut fixing sleeve 500 is a sleeve structure, with an outer thread on the outer side of the locking nut 400 and an inner thread on the inner side of the nut fixing sleeve 500. Figure 1As shown, after the die 200 is installed in the mounting groove 320, the locking nut 400 can be sleeved onto the outside of the locking portion 310, and the nut fixing sleeve 500 can be sleeved onto the outside of the locking nut 400 and rotated. During the rotation of the nut fixing sleeve 500, the locking nut 400 is driven downward. Because the mating surfaces of the locking nut 400 and the locking portion 310 are both conical, the locking nut 400 and the locking portion 310 can form a tightening, expansion, and tightening structure. The locking nut 400 will squeeze the locking portion 310, tightening it inward, thereby pressing the die 200 in the mounting groove 320 and improving the fixing effect of the die 200. After the nut fixing sleeve 500 is tightened, it can be fixed to the die fixing plate 300 using a detachable connection to ensure the stability of the entire locking mechanism. When the die 200 needs to be replaced, it is only necessary to remove the nut fixing sleeve 500 from the locking nut 400 to loosen the locking portion 310, so that the die 200 can be easily taken out from the mounting groove 320 of the locking portion 310 for replacement, thereby effectively saving the steps required to replace the die 200, significantly improving the replacement efficiency of the die 200, and realizing the rapid replacement of the die 200.

[0018] Furthermore, in order to improve the fixing effect of the die 200, a positioning plate 600 is added in the present invention. Figure 1 As shown, the positioning plate 600 is fixed to the top of the nut fixing sleeve 500 in a detachable connection manner, and the locking nut 400 is pressed by the positioning plate 600, providing an axial limit for the locking nut 400 and the nut fixing sleeve 500. The locking nut 400 and the positioning plate 600 are positioned and matched by a matching structure consisting of a socket and a pin. For example, the socket is set on the locking nut 400, and the corresponding pin is set on the positioning plate 600. The relative positioning between the locking nut 400 and the positioning plate 600 is achieved by the plug-in fit of the pin and the socket. The structure of the positioning plate 600 can also be further optimized so that the edge of the positioning plate 600 extends horizontally above the die 200 and is pressed against the top of the die 200, so that the positioning plate 600 can also press the die 200, thereby better fixing the die 200.

[0019] In the present utility model, the detachable connection between the die fixing plate 300 and the lower die base 100, the detachable connection between the nut fixing sleeve 500 and the die fixing plate 300, and the detachable connection between the positioning plate 600 and the nut fixing sleeve 500 are all realized by a matching structure composed of screws and screw holes to reduce the difficulty of disassembly and assembly.

[0020] Further, such as Figure 1As shown, the utility model is provided with limiting steps at the top of the die fixing plate 300 and the bottom of the locking nut 400, and a radial limiting fit is formed between the die fixing plate 300 and the locking nut 400 through the limiting steps; the limiting steps are provided to limit the fit between the locking nut 400 and the die fixing plate 300 to ensure a stable fit between the two.

Claims

1. A stamping die and die fixing structure, comprising a lower die base (100) and a die (200), characterized in that: The invention also includes a die fixing plate (300) detachably fixed on the lower die base (100), wherein the middle portion of the die fixing plate (300) is provided with an upwardly protruding locking portion (310), the locking portion (310) is an annular structure, and the inner side of the locking portion (310) is provided with a mounting groove (320) for accommodating the die (200); and further includes a locking nut (400) sleeved on the outside of the locking portion (310), the outer side surface of the locking portion (310) and the inner side surface of the locking nut (400) are both conical surfaces, and the outer side of the locking nut (400) is sleeved with a nut fixing sleeve (500), and the nut fixing sleeve (500) is threadedly connected to the locking nut (400) and is detachably connected to the die fixing plate (300).

2. The stamping die concave die fixing structure according to claim 1, characterized in that: The invention also includes a positioning plate (600), which is detachably connected to the nut fixing sleeve (500) and pressed against the top of the nut fixing sleeve (500) and the locking nut (400); the locking nut (400) and the positioning plate (600) form a positioning fit through a matching structure consisting of a socket and a pin.

3. The stamping die concave die fixing structure according to claim 2, wherein: The die fixing plate (300) and the lower die base (100), the nut fixing sleeve (500) and the die fixing plate (300), and the positioning plate (600) and the nut fixing sleeve (500) are all detachably connected via a matching structure consisting of screws and screw holes.

4. The stamping die concave die fixing structure according to claim 1, wherein: The top of the die fixing plate (300) and the bottom of the locking nut (400) are both provided with limiting steps, and a radial limiting fit is formed between the die fixing plate (300) and the locking nut (400) via the limiting steps.

5. The stamping die concave die fixing structure according to claim 2, wherein: The edge of the positioning plate (600) extends horizontally to the top of the die (200) and is pressed against the top of the die (200).

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