Circumferential multi-hole one-time stamping combined die

Abstract

The utility model relates to the technical field of combined dies, in particular to a circumferential multi-hole one-time stamping combined die. The circumferential multi-hole one-time stamping combined die comprises a lower die bottom plate and an upper die bottom plate, a stand column is arranged on the lower die bottom plate, a lower die fixing plate is arranged above the stand column, the lower portion of the upper die bottom plate is fixedly connected with the upper die fixing plate, side fixing plates are arranged on the periphery of the lower die fixing plate, upper wedge blocks and lower wedge blocks are arranged on the inner sides of the side fixing plates, and the upper wedge blocks and the lower wedge blocks are arranged on the lower die bottom plate. The lower wedge block is located on the lower die fixing plate, a transverse punch is arranged on the inner side of the lower wedge block, the upper wedge block is fixedly connected to the lower portion of the upper die bottom plate, the lower end of the upper wedge block is provided with an inclined face corresponding to the upper inclined face of the lower wedge block, a concave die is arranged in the center of the lower die fixing plate, and a pre-pressing material returning rod is arranged in the center of the upper die bottom plate and the center of the upper die fixing plate. And the pre-pressing material returning rod is positioned above the concave die. The circumferential multi-hole one-time punching combined die is simple in structure, can be used for circumferential punching of various workpieces, and is convenient to assemble and operate.

Description

Technical Field

[0001] The utility model relates to a stamping combined die, in particular to a circumferential multi-hole disposable stamping combined die. Background Art

[0002] A mold refers to a tool that, under the action of external force, makes the blank become a part of a specific shape and size. It is widely used in punching, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, as well as compression or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or inner cavity shape. The application of a contour shape with a cutting edge can make the blank separate (punch out) according to the contour shape, and the application of an inner cavity shape can make the blank obtain a corresponding three-dimensional shape. The mold is a precision tool with a complex shape. It bears the expansion force of the blank and has high requirements on structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important indicators of the level of mechanical manufacturing.

[0003] Among them, the combined mold generally includes a movable mold and a fixed mold (or a male mold and a female mold), which can be separated or combined. When separated, the workpiece is taken out, and when combined, the blank is injected into the mold cavity for forming. In the existing technology for manufacturing valve-shaped workpieces, a cylindrical blank with steps is first placed on the female mold, and then the punch is driven by a stamping device to stamp in the direction of the female mold to finally form the valve body. In the existing technology, a method is required to punch holes on the circumference of a workpiece at one time. The structure of conventional stamping dies is mostly complex and inconvenient to assemble. Utility Model Content

[0004] The utility model aims to solve the above defects and provides a circumferential multi-hole one-time stamping combined die.

[0005] In order to overcome the defects existing in the background technology, the technical solution adopted by the utility model to solve its technical problems is: this circular multi-hole disposable stamping combination mold comprises a lower mold bottom plate and an upper mold bottom plate, the lower mold bottom plate is provided with a column, a lower mold fixing plate is provided above the column, the upper mold bottom plate is fixedly connected to the upper mold fixing plate below, side fixing plates are provided around the lower mold fixing plate, an upper wedge block and a lower wedge block are provided on the inner side of the side fixing plate, the lower wedge block is located on the lower mold fixing plate, a transverse punch is provided on the inner side of the lower wedge block, the upper wedge block is fixedly connected to the bottom of the upper mold bottom plate, the lower end of the upper wedge block is provided with an inclined surface corresponding to the upper inclined surface of the lower wedge block, a die is provided at the center of the lower mold fixing plate, a pre-pressing and material removal rod is provided at the center of the upper mold bottom plate and the upper mold fixing plate, and the pre-pressing and material removal rod is located above the die.

[0006] According to another embodiment of the utility model, it further includes a return guide rod that is laterally penetrated and connected to the lower wedge block, one end of the return guide rod is fixedly connected to one side of the lower wedge block, and a return spring is provided on the return guide rod.

[0007] According to another embodiment of the utility model, the two ends of the return spring are further fixed by fixing rings and are located outside the side fixing plate.

[0008] According to another embodiment of the utility model, the lower mold bottom plate, the upper mold bottom plate, the lower mold fixing plate and the upper mold bottom plate are further comprised in a square shape.

[0009] According to another embodiment of the utility model, the lower wedge block is further fixed on the lower mold fixing plate through a sliding mechanism.

[0010] The utility model has the beneficial effects that the circumferential multi-hole disposable punching combined die has a simple structure, can be used for circumferential punching of various workpieces, and is easy to assemble and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Among them: 1. pre-pressing ejector rod, 2. upper die bottom plate, 3. upper die fixing plate, 4. upper wedge block, 5. lower wedge block, 6. return spring, 7. side fixing plate, 8. return guide rod, 9. die, 10. punch, 11. lower die fixing plate, 12. column, 13. lower die bottom plate, 14. workpiece. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. The embodiments in the basic utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1As shown in the figure, it includes a lower mold base plate 13 and an upper mold base plate 2. A column 12 is provided on the lower mold base plate 13. A lower mold fixing plate 11 is provided above the column 12. The upper mold base plate 2 is fixedly connected to the upper mold fixing plate 3 below. Side fixing plates 7 are provided around the lower mold fixing plate 11. An upper wedge block 4 and a lower wedge block 5 are provided on the inner side of the side fixing plate 7. The lower wedge block 5 is located on the lower mold fixing plate 11. A transverse punch 10 is provided on the inner side of the lower wedge block 5. The upper wedge block 4 is fixedly connected to the bottom of the upper mold base plate 2. The lower end of the upper wedge block 4 is provided with an inclined surface corresponding to the upper inclined surface of the lower wedge block 5. A die 9 is provided at the center of the lower mold fixing plate 11. A pre-pressing stripping rod 1 is provided at the center of the upper mold base plate 2 and the upper mold fixing plate 3. The pre-pressing stripping rod 1 is located above the die 9. When the punch press slides down, the multiple circumferential upper wedge blocks 4 drive the multiple circumferential lower wedge blocks 5 to slide inward, and the punch 10 on the lower wedge block 5 moves inward to punch through the workpiece 14, forming multiple circumferential holes on the workpiece and completing the punching at one time.

[0016] A return guide rod 8 is connected to the lower wedge block 5 horizontally, and one end of the return guide rod 8 is fixedly connected to one side of the lower wedge block 5. A return spring 6 is provided on the return guide rod 8. The two ends of the return spring 6 are fixed by fixing rings and are located on the outside of the side fixing plate 7. When the pre-pressing and ejecting rod 1 drives the upper die bottom plate 2 and the upper die fixing plate 3 downward, the upper wedge block 4 drives the downward movement. Since the lower end of the upper wedge block 4 is provided with an inclined surface corresponding to the inclined surface of the lower wedge block 5, the upper wedge block 4 moves downward, which can push the lower wedge block 5 to move inward, thereby completing the punching. After the punching is completed, the pre-pressing and ejecting rod 1 moves upward, and the upper wedge block 4 also moves upward. At this time, there is no thrust on the inclined surface of the lower wedge block 5. Under the action of the return spring 6 on the guide rod 8, the lower wedge block 5 moves closer to the side fixing plate 7.

[0017] The lower mold bottom plate 13, the upper mold bottom plate 2, the lower mold fixing plate 11 and the upper mold fixing plate 3 are square. A plurality of upper wedge blocks 4 and lower wedge blocks 5 are arranged on the circumference between the upper mold fixing plate 3 and the lower mold fixing plate 11, and can be arranged according to the number of openings.

[0018] The lower wedge block 5 is fixed on the lower die fixing plate 11 through a sliding mechanism.

[0019] Working principle: First, pass the upper wedge block 4 through the upper die fixing plate 3 and fix it on the upper die bottom plate 2, install the pre-pressed material return rod 1 in the hole of the upper die bottom plate 2; then fix the die 9 on the lower die fixing plate 11, and then connect the lower wedge block 5 and the side fixing plate 7 to the lower die fixing plate, assemble the return guide rod 8 and the return spring 6, and connect the lower die fixing plate 11 with the column fixing plate 12 and the lower die bottom plate 13 to form a complete set of molds. First, place the mold in the center of the punching machine, fix the upper die bottom plate 2 and the lower die bottom plate 12, raise the upper slide block, and when punching, first invert the pre-punched workpiece 14 on the die 9, fine-tune the punch slide upwards to make the punch 10 separate from the die 9, adjust the return spring so that the return spring just reaches the lower wedge block to quickly return, and gradually adjust the slide block downwards to just punch through the workpiece 14, lock the slide block, and start production.

[0020] The above description 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 circumferential multi-hole disposable stamping assembly die, comprising a lower die bottom plate (13) and an upper die bottom plate (2), wherein a column (12) is provided on the lower die bottom plate (13), a lower die fixing plate (11) is provided above the column (12), and an upper die fixing plate (3) is fixedly connected to the lower portion of the upper die bottom plate (2), characterized in that: Side fixing plates (7) are arranged around the lower die fixing plate (11), and an upper wedge block (4) and a lower wedge block (5) are arranged on the inner side of the side fixing plate (7), the lower wedge block (5) is located on the lower die fixing plate (11), and a transverse punch (10) is arranged on the inner side of the lower wedge block (5), the upper wedge block (4) is fixedly connected to the lower side of the upper die bottom plate (2), and the lower end of the upper wedge block (4) is provided with an inclined surface corresponding to the upper inclined surface of the lower wedge block (5), a concave die (9) is arranged at the center of the lower die fixing plate (11), and a pre-pressing material stripping rod (1) is arranged at the center of the upper die bottom plate (2) and the upper die fixing plate (3), and the pre-pressing material stripping rod (1) is located above the concave die (9).

2. The circumferential multi-hole one-time stamping assembly die according to claim 1, characterized in that: A return guide rod (8) is laterally passed through the lower wedge block (5), one end of the return guide rod (8) is fixedly connected to one side of the lower wedge block (5), and a return spring (6) is provided on the return guide rod (8).

3. The circumferential multi-hole disposable stamping assembly die according to claim 2, characterized in that: Both ends of the return spring (6) are fixed by fixing rings and are located outside the side fixing plate (7).

4. The circumferential multi-hole one-time stamping assembly die according to claim 1, characterized in that: The lower die bottom plate (13), the upper die bottom plate (2), the lower die fixing plate (11) and the upper die bottom plate (2) are square.

5. The circumferential multi-hole disposable stamping assembly die according to claim 1, characterized in that: The lower wedge block (5) is fixed on the lower die fixing plate (11) via a sliding mechanism.

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