CN212822128U - Double-end punching die - Google Patents

Abstract

The utility model relates to a double-end punching die, which comprises an upper punch and a lower die, wherein the upper punch is arranged below the upper die and the lower die, and the upper punch and the lower die move oppositely; the upper surface of the lower die is provided with a die cavity for accommodating a blank, the upper punch is opposite to the die cavity, and the shape of the upper punch corresponds to that of the die cavity; two lower punches are vertically arranged in the cavity, the top of each lower punch is flush with the upper opening of the cavity, two cutting holes are formed in each upper punch, the lower punches are opposite to the cutting holes, and the shapes of the lower punches correspond to the shapes of the cutting holes; the blank is arranged in the cavity and supported on the two lower punches, the upper punches move towards the lower die and extend into the cavity to press the blank to move downwards, the lower punches are matched with the corresponding notches to punch holes, and the double-end punching of the product is completed at one time. The punching machine has the advantages of reasonable design, simple structure, capability of completing punching of double heads of a product at one time, time and labor saving, high working efficiency and capability of reducing labor cost; and can effectively prevent flash, waste material card from going up the mould.

Description

Double-end punching die

Technical Field

The utility model relates to an electric power fitting processing technology field, concretely relates to double-end die-cut formula mould.

Background

With the increase of the requirements of national power grid hardware, the production of batch-type qualified products becomes urgent, the development of a die becomes a primary task, the U-shaped suspension loop adopts single-end punching before transformation, one end of the U-shaped suspension loop needs to be manually punched, and the other end of the U-shaped suspension loop needs to be replaced for punching, so that the time and the labor are wasted, the working efficiency is low, and the labor cost is greatly increased; in the process of punching the die, products and burr flash are easily clamped on the upper die, and great inconvenience is brought to the machining process.

Disclosure of Invention

In order to solve the problem, the utility model provides a double-end die-cutting type die.

The technical scheme of the utility model:

a double-end punching die comprises an upper punch and a lower die, wherein the upper punch is arranged below the upper die and the lower die, and the upper punch and the lower die move oppositely; the upper surface of the lower die is provided with a die cavity for accommodating a blank, the upper punch is opposite to the die cavity, and the shape of the upper punch corresponds to that of the die cavity; two lower punches are vertically arranged in the cavity, the top of each lower punch is flush with the upper opening of the cavity, two cutting holes are formed in each upper punch, the lower punches are opposite to the cutting holes, and the shapes of the lower punches correspond to the shapes of the cutting holes;

when the double-head punching die is used, the double-head punching die is arranged on a press, and the upper punch is driven by the press to move opposite to the lower die; punching: the blank is placed in the cavity and supported on the two lower punches, the upper punches move towards the lower die and extend into the cavity to press the blank to move downwards, the lower punches and the corresponding notches are matched to punch holes, and the double-end punching of the product is completed at one time.

The die further comprises an upper die plate, and the upper die plate is arranged on the upper punch and is fixedly connected with the upper punch.

The upper die plate is provided with two holes which are communicated with the cutting holes in a one-to-one correspondence manner, cover plates are respectively arranged in the cutting holes, material returning columns are respectively arranged in the cutting holes and are in sliding fit with the lower punches, cover plate springs are arranged between the cover plates and the material returning columns and respectively abut against the cover plates and the material returning columns, the material returning columns are matched with the upper punches through steps to form lower limit positions of the material returning columns, and when the material returning columns are located at the lower limit positions, the lower surfaces of the material returning columns are flush with the lower surfaces of the lower punches or extend out of the lower punches by one section; thus, when the lower punch punches, the waste is pushed into the cutting hole to push the material returning column to overcome the elasticity of the cover plate spring to move upwards; after punching is completed, the upper punch returns, the lower punch exits from the cut hole, and at the moment, the waste in the cut hole is ejected under the action of the elastic force of the cover plate spring.

The die also comprises an upper fixing plate and an upper stripper plate, wherein the upper fixing plate and the upper stripper plate are sleeved on the upper punch head in an up-and-down mode, the upper fixing plate is fixedly connected with the upper die plate, the upper stripper plate is in sliding fit with the upper punch head, a plurality of guide post holes are formed in the upper die plate, the guide post holes penetrate through the lower fixing plate, guide posts are arranged in the guide post holes, the lower ends of the guide posts extend out of the guide post holes and are fixedly connected with the upper stripper plate, stripper plate springs are sleeved on the guide posts, two ends of the stripper plate springs are respectively abutted against the upper fixing plate and the upper stripper plate, the guide posts are matched with the upper die plate through steps to form a lower limit position of the upper stripper plate, and when the upper stripper plate is positioned at the lower limit position; thus, when the upper punch punches, the upper material pushing plate presses the flash under the elastic action of the material pushing plate; after punching is completed, the upper punch returns, and the upper material pushing plate ejects the flash under the elastic action of the material pushing plate.

The die also comprises a lower fixing plate, a lower die plate and a lower die backing plate, wherein the lower fixing plate is arranged below the lower die and fixedly connected with the lower die; a sliding block hole corresponding to the shape of the ejection sliding block is formed in the middle of the lower die, the ejection sliding block is arranged in the lower die, the ejection sliding block is in sliding fit with the lower die, a contour groove is formed in the upper surface of the ejection sliding block, and the contour groove and the sliding block hole jointly form the cavity; the lower punch is fixedly connected to the lower fixing plate and correspondingly penetrates through the lower punch holes to extend out, and the lower punch is in sliding fit with the ejection slide block; the lower fixing plate, the lower die plate and the lower die base plate are correspondingly provided with round holes which are communicated to form an ejector rod hole, an ejector rod is arranged in the ejector rod hole, the upper end of the ejector rod is fixedly connected with an ejector slide block through an ejector block, and the ejector block is arranged in the ejector rod hole and is in sliding fit with the lower fixing plate, the lower die plate and the lower die base plate; when the punching die is used, the ejector rod is connected with the oil cylinder of the pressing machine, so that after punching is completed, the upper punch returns to the upper limit, the oil cylinder receives signals, the ejector rod is driven to move upwards, the ejection sliding block is driven to move upwards through the ejection block, and a product in the cavity is ejected.

The upper die plate is fixedly connected with a plurality of upper guide sleeves, the lower die plate is fixedly connected with a plurality of lower guide pillars, and the upper guide sleeves are in one-to-one corresponding sliding fit with the lower guide pillars.

The utility model has the advantages of reasonable design, simple structure, capability of completing the punching of double heads of products at one time, time and labor saving, high working efficiency and labor cost reduction; and can effectively prevent flash, waste material card from going up the mould.

Drawings

FIG. 1 is a schematic cross-sectional view of a double-headed die.

In the figure, an upper punch 1, a lower die 2, a lower punch 3, an upper die plate 4, a cover plate 5, a material returning column 6, a cover plate spring 7, an upper fixing plate 8, an upper material returning plate 9, a material returning plate spring 11, a lower fixing plate 12, a lower die plate 13, a lower die backing plate 14, an ejection slide block 15, an ejector rod 16, an ejection block 17, an upper guide sleeve 18 and a lower guide column 19.

Detailed Description

As shown in the figures, the double-end punching die comprises an upper punch 1 and a lower die 2, wherein the upper punch 1 is arranged below the upper die 2, and the upper punch 1 and the lower die 2 move oppositely; the upper surface of the lower die 2 is provided with a die cavity for accommodating a blank, the upper punch 1 is opposite to the die cavity, and the shape of the upper punch corresponds to that of the die cavity; two lower punches 3 are vertically arranged in the cavity, the tops of the lower punches 3 are flush with the upper opening of the cavity, two cutting holes are formed in the upper punches 3, the lower punches 3 are opposite to the cutting holes, and the shapes of the lower punches correspond to the shapes of the cutting holes; the die also comprises an upper die plate 4, wherein the upper die plate is arranged on the upper punch 1 and is fixedly connected with the upper punch 1; the upper die plate 4 is provided with two holes which are communicated with cutting holes in a one-to-one correspondence manner, cover plates 5 are respectively installed in the cutting holes, material returning columns 6 are respectively arranged in the cutting holes, the material returning columns 6 are in sliding fit with the lower punch 1, cover plate springs 7 are arranged between the cover plates 5 and the material returning columns 6, the cover plate springs 7 respectively abut against the cover plates 5 and the material returning columns 6, the material returning columns 6 are matched with the upper punch 1 through steps to form lower limit positions of the material returning columns 6, and when the material returning columns 6 are located at the lower limit positions, the lower surfaces of the material returning columns 6 are flush with the lower surfaces of the lower punch 1; the die further comprises an upper fixing plate 8 and an upper stripper plate 9, the upper fixing plate 8 and the upper stripper plate 9 are sleeved on the upper punch 1 one by one, the upper fixing plate 8 is fixedly connected with the upper die plate 4, the upper stripper plate 9 is in sliding fit with the upper punch 1, a plurality of guide post holes are formed in the upper die plate 4, the guide post holes penetrate through the lower fixing plate 8, guide posts are arranged in the guide post holes, the lower ends of the guide posts extend out of the guide post holes and are fixedly connected with the upper stripper plate 9, stripper plate springs 11 are sleeved on the guide posts, two ends of the stripper plate springs 11 respectively abut against the upper fixing plate 8 and the upper stripper plate 9, the guide posts are matched with the upper die plate 4 through steps to form a lower limit position of the upper stripper plate 9, and when the upper stripper plate 9 is positioned at the lower limit position, the lower surface of the upper stripper plate 9 is flush with; the die further comprises a lower fixing plate 12, a lower die plate 13 and a lower die backing plate 14, wherein the lower fixing plate 12 is arranged below the lower die 2 and fixedly connected with the lower die 2, the lower die plate 13 is arranged below the lower fixing plate 12 and fixedly connected with the lower fixing plate 12, and the lower die backing plate 14 is arranged below the lower die plate 13 and fixedly connected with the lower die plate 13; a slide block hole corresponding to the shape of the ejection slide block is formed in the middle of the lower die 2, the ejection slide block 15 is arranged in the lower die, the ejection slide block 15 is in sliding fit with the lower die 2, a contour groove is formed in the upper surface of the ejection slide block 15, and the contour groove and the slide block hole jointly form the cavity; the lower punch 3 is fixedly connected to the lower fixing plate 12 and correspondingly penetrates through the lower punch holes to extend out, and the lower punch 3 is in sliding fit with the ejection slide block 15; the lower fixing plate 12, the lower die plate 13 and the lower die backing plate 14 are correspondingly provided with round holes which are communicated to form a mandril hole, a mandril 16 is arranged in the mandril hole, the upper end of the mandril 16 is fixedly connected with an ejection sliding block 15 through an ejection block 17, and the ejection block 17 is arranged in the mandril hole and is in sliding fit with the lower fixing plate 12, the lower die plate 13 and the lower die backing plate 14; the upper template 4 is fixedly connected with a plurality of upper guide sleeves 18, the lower template 13 is fixedly connected with a plurality of lower guide pillars 19, and the upper guide sleeves 18 are in one-to-one corresponding sliding fit with the lower guide pillars 19.

The above disclosure is only for the preferred embodiment of the present invention, but not intended to limit itself, and any changes and modifications made by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (6)

1. A double-end punching die comprises an upper punch and a lower die, wherein the upper punch is arranged below the upper die and the lower die, and the upper punch and the lower die move oppositely; the upper surface of the lower die is provided with a die cavity for accommodating a blank, the upper punch is opposite to the die cavity, and the shape of the upper punch corresponds to that of the die cavity; the die is characterized in that two lower punches are vertically arranged in the die cavity, the tops of the lower punches are flush with the upper opening of the die cavity, two cutting holes are formed in the upper punches, the lower punches are opposite to the cutting holes, and the shapes of the lower punches correspond to the shapes of the cutting holes; the blank is arranged in the cavity and supported on the two lower punches, the upper punches move towards the lower die and extend into the cavity to press the blank to move downwards, the lower punches are matched with the corresponding notches to punch holes, and the double-end punching of the product is completed at one time.

2. A double-ended die cutting according to claim 1, wherein said die further comprises an upper die plate, said upper die plate being disposed on and fixedly attached to said upper punch.

3. A double-end punching die according to claim 2, wherein the upper die plate is provided with two holes which are communicated with the cutting holes in a one-to-one correspondence manner, the cutting holes are respectively provided with a cover plate, the cutting holes are respectively provided with a material returning column, the material returning column is in sliding fit with the lower punch, a cover plate spring is arranged between the cover plate and the material returning column, the cover plate spring respectively abuts against the cover plate and the material returning column, the material returning column is matched with the upper punch through a step to form a lower limit of the material returning column, and when the material returning column is positioned at the lower limit, the lower surface of the material returning column is flush with the lower surface of the lower punch or extends out of one section of the lower punch.

4. The double-ended die-cutting die according to claim 2, further comprising an upper fixing plate and an upper stripper plate, wherein the upper fixing plate and the upper stripper plate are sleeved on the upper punch head in a manner of one-to-one, the upper fixing plate is fixedly connected with the upper die plate, the upper stripper plate is slidably fitted with the upper punch head, a plurality of guide post holes are formed in the upper die plate, the guide post holes penetrate through the lower fixing plate, guide posts are arranged in the guide post holes, the lower ends of the guide posts extend out of the guide post holes and are fixedly connected with the upper stripper plate, stripper plate springs are sleeved on the guide posts, two ends of the stripper plate springs respectively abut against the upper fixing plate and the upper stripper plate, the guide posts and the upper die plate are fitted through steps to form a lower limit of the upper stripper plate, and when the upper stripper plate is located at the lower limit, the lower surface of the upper stripper plate is flush with.

5. The double-end punching die of claim 2, further comprising a lower fixing plate, a lower die plate and a lower die backing plate, wherein the lower fixing plate is arranged below the lower die and fixedly connected with the lower die, the lower die plate is arranged below the lower fixing plate and fixedly connected with the lower fixing plate, and the lower die backing plate is arranged below the lower die plate and fixedly connected with the lower die plate; a sliding block hole corresponding to the shape of the ejection sliding block is formed in the middle of the lower die, the ejection sliding block is arranged in the lower die, the ejection sliding block is in sliding fit with the lower die, a contour groove is formed in the upper surface of the ejection sliding block, and the contour groove and the sliding block hole jointly form the cavity; the lower punch is fixedly connected to the lower fixing plate and correspondingly penetrates through the lower punch holes to extend out, and the lower punch is in sliding fit with the ejection slide block; the lower fixing plate, the lower die plate and the lower die base plate are correspondingly provided with round holes which are communicated to form an ejector rod hole, an ejector rod is arranged in the ejector rod hole, the upper end of the ejector rod is fixedly connected with an ejector sliding block through an ejector block, and the ejector block is arranged in the ejector rod hole and is in sliding fit with the lower fixing plate, the lower die plate and the lower die base plate.

6. The double-ended punching die according to claim 5, wherein a plurality of upper guide sleeves are fixedly connected to the upper die plate, a plurality of lower guide posts are fixedly connected to the lower die plate, and the upper guide sleeves and the lower guide posts are in one-to-one sliding fit.

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