CN211276123U

CN211276123U - Punching die capable of guaranteeing concentricity of special-shaped hole of chassis

Info

Publication number: CN211276123U
Application number: CN201922232012.8U
Authority: CN
Inventors: 李晓锋; 盛银高; 崔颜丽
Original assignee: Jingjiang Sanpeng Mould Technology Co ltd
Current assignee: Jingjiang Sanpeng Mould Technology Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-08-18
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a punching die for ensuring the concentricity of a special-shaped hole of a chassis, which comprises an upper die plate, a lower die plate, an upper padding plate, an upper fixing plate, a discharging plate, a punching middle hole punch head and a plurality of punching rivet hole punch heads which are fixedly arranged on the upper fixing plate, a lower padding plate which is fixedly arranged above the lower die plate, and a die protective ring which is fixedly arranged above the lower padding plate, wherein a plurality of concave die sleeves are embedded in the die protective ring, the punching middle hole punch head and the punching rivet hole punch head respectively pass through the perforation on the discharging plate, the punching rivet hole punch heads are distributed on the circumference which takes the center of the punching middle hole punch head as the circle center, a guiding mechanism is arranged between the punching middle hole punch head and the die protective ring, a guiding mechanism is arranged between the upper padding plate and the lower padding plate, a discharging spring is arranged between the discharging plate and the upper fixing plate, the periphery of the concave die sleeves is provided with a, and a special-shaped positioning ring matched with the special-shaped positioning hole is arranged in the special-shaped positioning hole.

Description

Punching die capable of guaranteeing concentricity of special-shaped hole of chassis

Technical Field

The utility model relates to a guarantee punching die of dysmorphism hole concentricity on chassis.

Background

When the peripheral holes and the central holes of the chassis are punched, the reserved process holes of blanking are used for positioning and guiding the next procedure, and the precision requirement of common products can be generally met. Special-shaped tongue holes are formed in the special pressing covers, and rivet holes need to be punched on the inclined surfaces in the tongues. At this time, the concentricity requirement of the tongue and the rivet hole in the tongue cannot be met only by conventional center positioning and pilot. The requirement of concentricity during punching in different processes is urgently needed to be met by developing a novel structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a punching die of the dysmorphism hole concentricity of assurance chassis, the tongue shape hole that utilizes the front process to dash out with want the rivet hole that this process will be dashed to have the interior profile that the concentricity required to fix a position, satisfy the concentricity requirement of rivet hole and tongue shape hole profile, effectively guarantee gland and diaphragm spring's assembly precision.

In order to achieve the above object, the technical solution of the present invention is to provide a punching die for ensuring the concentricity of a special-shaped hole of a chassis, comprising an upper die plate, a lower die plate, an upper backing plate fixedly arranged below the upper die plate, an upper fixing plate fixedly arranged below the upper backing plate, a stripper plate arranged below the upper fixing plate in a sliding manner along a vertical direction, a punching center hole punch and a plurality of punching rivet hole punches fixedly arranged on the upper fixing plate, a lower backing plate fixedly arranged above the lower die plate, and a female die protection ring fixedly arranged above the lower backing plate, wherein a plurality of female die sleeves are embedded in the female die protection ring, the female die sleeves correspond to the punching rivet hole punches one by one, the punching center hole punch and the punching rivet hole punches respectively pass through the through holes on the stripper plate, and the punching rivet hole punches are distributed on a circumference with the center of the punching center hole punch as a circle center, punch the well drift with be provided with between the die guard circle and lead positive mechanism, the upper padding plate with be provided with guiding mechanism between the lower bolster, the stripper with be provided with discharge spring, its characterized in that between the upper fixed plate: the periphery of the female die sleeve is provided with a special-shaped positioning hole matched with the tongue-shaped hole along the inner contour of the tongue-shaped hole of the product, a special-shaped positioning ring matched with the special-shaped positioning hole is arranged in the special-shaped positioning hole, the upper end face of the special-shaped positioning ring is higher than the upper surface of the female die sleeve, and the distance between the upper end face and the upper surface of the female die sleeve is larger than two thirds of the thickness of the product and smaller than the thickness.

The further improvement is that: and the plurality of punching rivet hole punches are uniformly distributed on the circumference which takes the center of the punching center hole punch as the center of a circle.

The further improvement is that: the die case has 9, dysmorphism holding ring has 3, 3 dysmorphism holding ring is equidistant distribution.

The further improvement is that: the guide mechanism comprises a guide core fixedly arranged on the upper surface of the female die protection ring, and a guide hole matched with the guide core is formed in the lower surface of the punching center hole punch.

The further improvement is that: the guide mechanism comprises ball guide pillars arranged on one sides of the upper template and the lower template, inner guide sleeves arranged on the other sides of the lower template, and inner guide pillars arranged on the other sides of the upper template and matched with the inner guide sleeves.

The utility model has the advantages and the beneficial effects that: when the center guide positioning core is arranged on the upper punch center hole punch head for primary positioning, the tongue-shaped hole inner contour positioning block is additionally arranged on the punching female die sleeve to assist in accurate positioning, so that the product processing precision is improved, the replacement is convenient and fast, and the processing cost is low. Is suitable for large-scale and large-scale industrial production, and creates higher economic value.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of a product;

FIG. 3 is a schematic view of a shaped positioning post;

FIG. 4 is a schematic view of a female die sleeve;

fig. 5 is a cross-sectional view taken at a-a of fig. 4.

Wherein: 1. mounting a template; 2. an upper base plate; 3. an upper fixing plate; 4. a stripper plate; 5. punching a middle hole punch; 6. punching a rivet hole punch; 7. a lower template; 8. a lower base plate; 9. a female die protection ring; 10. a female die sleeve; 11. a special-shaped positioning ring; 12. a discharge spring; 13. a guide core; 14. a ball guide post; 15. an inner guide sleeve; 16. an inner guide post.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 2, a schematic diagram of a special-shaped hole of a chassis is shown, and in order to ensure the concentricity requirements of a tongue hole and a rivet hole in a tongue in fig. 2, the following punching die is designed.

As shown in fig. 1 and 3-5, a punching die for ensuring the concentricity of a special-shaped hole of a chassis comprises an upper die plate 1, a lower die plate 7, an upper backing plate 2 fixedly arranged below the upper die plate 1, an upper fixing plate 3 fixedly arranged below the upper backing plate 2, a discharging plate 4 arranged below the upper fixing plate 3 in a sliding manner along the vertical direction, a punching center hole punch 5 and a plurality of punching rivet hole punches 6 fixedly arranged on the upper fixing plate 3, a lower backing plate 8 fixedly arranged above the lower die plate 7, and a female die protection ring 9 fixedly arranged above the lower backing plate 8, wherein a plurality of female die sleeves 10 are embedded in the female die protection ring 9, the female die sleeves 10 correspond to the punching rivet hole punches 6 one by one, the punching center hole punches 5 and the punching rivet hole punches 6 respectively pass through holes on the discharging plate 4, and the punching rivet hole punch 6 is distributed on the circumference taking the center of the punching center hole punch 5 as the center of a circle, a guiding mechanism is arranged between the punching center hole punch 5 and the female die protection ring 9, a guiding mechanism is arranged between the upper backing plate 2 and the lower backing plate 8, a discharging spring 12 is arranged between the discharging plate 4 and the upper fixing plate 3, a special-shaped positioning hole matched with the tongue-shaped hole is arranged on the periphery of the female die sleeve 10 along the inner contour of the tongue-shaped hole of the product, a special-shaped positioning ring 11 matched with the special-shaped positioning hole is arranged in the special-shaped positioning hole, and the upper end surface of the special-shaped positioning ring 11 is higher than the upper surface of the female die sleeve 10, and the distance between the upper surface and the lower surface is larger than two thirds of.

The female die sleeve 10 is embedded in the female die protection ring 9, a special-shaped positioning ring 11 is cut on the periphery of the female die protection ring 9 corresponding to the rivet punching hole female die sleeve 10 along the contour of a tongue-shaped hole, the height of the special-shaped positioning ring 11 higher than the female die sleeve 10 is larger than the thickness of 2/3 materials, the depth of a punched bright belt is guaranteed to be exceeded, and accurate positioning is guaranteed; less than one product thickness, avoiding interference with the upper stripper plate 4.

In the preferred embodiment of the present invention, the plurality of rivet hole punching punches 6 are uniformly distributed on the circumference of the center hole punching punch 5.

Concave die sleeve 10 has 9, dysmorphism holding ring 11 has 3, 3 dysmorphism holding ring 11 equidistant distribution, 9 rivet hole concave die sleeve 10 are the equipartition on the circumference, and in order to guarantee balanced, 3 tongue shape holding rings of equidistant equipartition satisfy the concentricity requirement of rivet hole and tongue shape hole profile, effectively guarantee gland and diaphragm spring's assembly precision.

In order to ensure the concentricity of the central hole and the rivet hole, the pilot mechanism comprises a pilot core 13 fixedly arranged on the upper surface of the female die protection ring 9, and a pilot hole matched with the pilot core 13 is arranged on the lower surface of the punching central hole punch 5.

In this embodiment, the preferred implementation manner is that the guiding mechanism includes a ball guide post 14 disposed on one side of the upper mold plate 1 and the lower mold plate 7, an inner guide sleeve 15 disposed on the other side of the lower mold plate 7, and an inner guide post 16 disposed on the other side of the upper mold plate 1 and engaged with the inner guide sleeve 15.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A punching die for ensuring the concentricity of a special-shaped hole of a chassis comprises an upper die plate, a lower die plate, an upper backing plate fixedly arranged below the upper die plate, an upper fixing plate fixedly arranged below the upper backing plate, a stripper plate arranged below the upper fixing plate in a sliding manner along the vertical direction, a center punching punch and a plurality of rivet punching punches fixedly arranged on the upper fixing plate, a lower backing plate fixedly arranged above the lower die plate, and a female die protection ring fixedly arranged above the lower backing plate, wherein a plurality of female die sleeves are embedded in the female die protection ring and correspond to the rivet punching punches one by one, the center punching punch and the rivet punching punch respectively pass through a through hole on the stripper plate, the rivet punching punches are distributed on a circumference taking the center of the center punching punch as the center of a circle, and a guide mechanism is arranged between the center punching punch and the female die protection ring, the upper padding plate with be provided with guiding mechanism between the lower bolster, the stripper with be provided with discharge spring, its characterized in that between the upper fixed plate: the periphery of the female die sleeve is provided with a special-shaped positioning hole matched with the tongue-shaped hole along the inner contour of the tongue-shaped hole of the product, a special-shaped positioning ring matched with the special-shaped positioning hole is arranged in the special-shaped positioning hole, the upper end face of the special-shaped positioning ring is higher than the upper surface of the female die sleeve, and the distance between the upper end face and the upper surface of the female die sleeve is larger than two thirds of the thickness of the product and smaller than the thickness.

2. The punching die for ensuring the concentricity of the irregularly-shaped holes of the chassis according to claim 1, wherein: and the plurality of punching rivet hole punches are uniformly distributed on the circumference which takes the center of the punching center hole punch as the center of a circle.

3. The punching die for ensuring the concentricity of the irregularly-shaped holes of the chassis according to claim 2, wherein: the die case has 9, dysmorphism holding ring has 3, 3 dysmorphism holding ring is equidistant distribution.

4. The punching die for ensuring the concentricity of the irregularly-shaped holes of the chassis according to claim 1, wherein: the guide mechanism comprises a guide core fixedly arranged on the upper surface of the female die protection ring, and a guide hole matched with the guide core is formed in the lower surface of the punching center hole punch.

5. The punching die for ensuring the concentricity of the irregularly-shaped holes of the chassis according to claim 1, wherein: the guide mechanism comprises ball guide pillars arranged on one sides of the upper template and the lower template, inner guide sleeves arranged on the other sides of the lower template, and inner guide pillars arranged on the other sides of the upper template and matched with the inner guide sleeves.