CN207154523U - A kind of pipe fitting punch die - Google Patents

Abstract

The utility model discloses a punching die for pipe fittings, which comprises a stamping mold base, an upper mold base and a lower mold base, the top of the stamping mold base is fixedly connected with a cylinder through bolts, and the gap between the upper mold base and the upper splint is The upper backing plate is sleeved, the outer side of the rolling guide column is sleeved with a guide post sleeve, the top of the lower mold base is fixedly connected with a lower backing plate, and the top of the lower backing plate is bolted with a stamping inner mold, Positioning bearings are arranged around the stamping inner mold, a stripping plate is arranged at the top of the stamping inner mold, an inner mold insert is clamped inside the stamping inner mold, and a through hole is opened in the middle of the inner mold insert . The utility model device has a simple structure and adopts the upper and lower structure to fix the punching holes, which facilitates the taking out of the pipes, not only helps to improve the precision of the pipe punching, but also improves the production efficiency, and uses the guide rail casing to play a certain role in deceleration and buffering , which is beneficial to the improvement and stability of the punching precision, and the stability and safety of the stamping die are improved.

Description

A punching die for pipe fittings

technical field

The utility model relates to the technical field of punching dies, in particular to a punching die for pipe fittings.

Background technique

Stamping dies can be said to be one of the most widely used dies in mechanical manufacturing, and punching dies are the most common type of dies. They are generally used for punching holes at both ends of pipe fittings. Many punching dies in production workshops are now Or the punching device has the problem of low punching efficiency. Due to the extremely high requirements for the positioning and fixing of the pipe, it is difficult to replace the pipe during the punching process, and because of its high precision, its control The stamping stroke is too slow, which seriously affects the production efficiency, and there will be a deviation in the relative position of the punching holes at both ends of the pipe during the stamping process, which cannot ensure that the center line of the two through holes is parallel to the axial direction of the pipe, and there is a problem of low punching accuracy .

Utility model content

The main purpose of the utility model is to provide a punching die for pipe fittings, which can effectively solve the problems in the background technology.

In order to achieve the above object, the technical solution adopted by the utility model is: a punching die for pipe fittings, including a stamping mold base, an upper mold base and a lower mold base, the top of the stamping mold base is fixedly connected with a cylinder through bolts, the The inside of the stamping die frame is fixedly connected with the upper die base through the die handle. The bottom of the upper die base is bolted with an upper splint. The middle part of the plate is clamped with a stamping head, and the upper mold base is fixedly connected with the lower mold base through a rolling guide column. Return spring, the top of the lower die base is fixedly connected with a lower backing plate, the top of the lower backing plate is bolted with a stamping inner mold, positioning bearings are arranged around the stamping inner mold, and the top of the stamping inner mold A stripping plate is provided, and an inner mold insert is clamped inside the stamping inner mold, and a through hole is opened in the middle of the inner mold insert.

Further, the material of the guide post sleeve is T8 high carbon steel, and the surface of the guide post sleeve has a mesh structure.

Further, the punching head penetrates through the middle of the upper clamping plate and the release plate, and the punching head acts on the inside of the punching inner mold.

Further, both the upper backing plate and the lower backing plate are made of rubber, and the thickness of the upper backing plate is smaller than that of the lower backing plate.

Further, the stripping plate is fixedly connected with the lower backing plate and the lower mold base through positioning bearings.

Further, the upper splint, the stripper plate and the stamping inner mold are distributed on the same straight line in the vertical direction, and the thickness of the upper splint and the stripper plate are equal.

Further, the cross section of the stamping inner mold is an arc-shaped structure, and the back of the stamping inner mold is an open structure.

Further, there are four through holes in total, and there are two types of through holes: waist-shaped holes and square holes with rounded corners.

Compared with the prior art, the utility model has the following beneficial effects: the utility model device has a simple structure and adopts an upper and lower structure to fix the punching holes, so that one side of the punching inner mold can withstand the pipe and enter from the opening on the other side, which is not only beneficial Improve the precision of pipe punching, and effectively improve the replacement efficiency and production efficiency. By setting the guide rail sleeve, the wear between the rolling guide column and the upper and lower mold bases can be effectively reduced, and it can play a certain role in deceleration and buffering. It is conducive to the improvement and stability of punching precision. The impact of stamping on the upper and lower die bases can be effectively reduced by the setting of the upper and lower backing plates, reducing the possibility of vibration loosening at the fixed part of the upper and lower die bases, and improving the safety of the stamping die.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a structural schematic diagram of the stripping template of the present invention.

Fig. 3 is a structural schematic diagram of the stamping inner mold of the present invention.

In the figure: 1. Cylinder; 2. Stamping die frame; 3. Die handle; 4. Upper die base; 5. Guide post casing; 6. Rolling guide post; Stripping plate; 10, positioning bearing; 11, lower backing plate; 12, lower mold seat; 13, stamping head; 14, stamping inner mold; 15, return spring; 16, inner mold insert; 17, through hole.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

As shown in Figures 1-3, a punching die for pipe fittings includes a stamping die frame 2, an upper die base 4 and a lower die base 12, the top of the stamping die base 2 is fixedly connected with a cylinder 1 by bolts, The inside of the mold base 2 is fixedly connected with the upper mold base 4 through the mold handle 3, the bottom of the upper mold base 4 is bolted with an upper splint 8, and the gap between the upper mold base 4 and the upper splint 8 is sleeved with an upper pad plate 7, the middle part of the upper backing plate 7 is clamped with a stamping head 13, the upper die base 4 is fixedly connected with the lower die base 12 through the rolling guide post 6, and the outer side of the rolling guide post 6 is sleeved with a guide post Sleeve 5, the inside of the lower mold base 12 is clamped with a return spring 15, the top of the lower mold base 12 is fixedly connected with a lower backing plate 11, and the top of the lower backing plate 11 is bolted with a stamping inner mold 14 , positioning bearings 10 are arranged around the stamping inner mold 14, a stripping plate 9 is arranged on the top of the stamping inner mold 14, and an inner mold insert 16 is clamped inside the stamping inner mold 14, and the inner mold insert 16 A through hole 17 is opened in the middle of the piece 16 .

Wherein, the material of the guide post sleeve 5 is T8 high carbon steel material, the surface of the guide post sleeve 5 is a sieve structure, and the T8 high carbon steel is conducive to improving the strength and wear resistance of the guide post sleeve 5 , and the sieve structure is conducive to the deceleration of stamping.

Wherein, the punching head 13 penetrates through the middle of the upper splint 8 and the stripper plate 9 , and the punching head 13 acts on the inside of the punching inner mold 14 .

Wherein, the upper backing plate 7 and the lower backing plate 11 are made of rubber material, and the thickness of the upper backing plate 7 is smaller than the thickness of the lower backing plate 11, which reduces the impact on the upper and lower mold bases and improves the safety of the stamping die sex.

Wherein, the stripping plate 9 is fixedly connected with the lower backing plate 11 and the lower mold base 12 through the positioning bearing 10, which improves the stability of the stripping plate 9 and the lower mold base 12, reduces the relative offset of the two, and improves the punching efficiency. accuracy.

Wherein, the upper clamping plate 8, the stripping plate 9 and the stamping inner mold 14 are distributed in the same straight line in the vertical direction, and the thickness of the upper clamping plate 8 and the stripping plate 9 are equal.

Wherein, the cross section of the stamping inner mold 14 is an arc-shaped structure, and the back of the stamping inner mold 14 is an open structure.

Wherein, there are four through holes 17 in total, and the through holes 17 include waist-shaped holes and square holes with rounded corners.

It should be noted that the utility model is a punching die for pipe fittings. During use, the cylinder 1 is raised first to drive the upper die base 4 upwards, and the stripping plate 9 is moved upwards under the action of the return spring 15 to press the inner die 14 Separation, the pipe can be added through the back of the stamping inner mold 14, so that one end can withstand the side of the stamping inner mold 14, and then the cylinder 1 is controlled to act downward, so that the upper splint 8 presses the stripping plate 9, thereby fixing the pipe, and stamping The head 13 directly penetrates the stripping plate 9 and punches through the pipe, and the inner bolt of the stripping plate 9 is directly fixed through the positioning bearing 10 and the through hole inside the lower die base 12 when the stripping plate 9 is downward, so as to ensure that the stripping plate 9 and the stamping inner mold 14 are at the same vertical Position, to prevent the relative offset from affecting the stamping accuracy, while the upper backing plate 7 and the lower backing plate 11 can reduce the impact on the upper and lower die bases during the stamping process, prevent the loosening of the fixing screws, and improve the safety and stability of the stamping die sex.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (8)

1. A punching die for pipe fittings, comprising a stamping mold base (2), an upper mold base (4) and a lower mold base (12), characterized in that: the top of the stamping mold base (2) is fixedly connected with a Cylinder (1), the inside of the stamping mold frame (2) is fixedly connected with the upper mold base (4) through the mold handle (3), and the bottom of the upper mold base (4) is bolted with an upper splint (8), An upper backing plate (7) is sleeved at the gap between the upper die base (4) and the upper splint (8), and the middle part of the upper backing plate (7) is clamped with a punching head (13), and the upper die The seat (4) is fixedly connected with the lower mold base (12) through the rolling guide column (6), and the outer side of the rolling guide column (6) is sleeved with a guide column sleeve (5), and the lower mold base (12) A return spring (15) is clamped inside the lower mold base (12), and a lower backing plate (11) is fixedly connected to the top of the lower backing plate (11), and a stamping inner mold (14) is bolted to the top of the lower backing plate (11). , the surrounding of the stamping inner mold (14) is provided with a positioning bearing (10), the top of the stamping inner mold (14) is provided with a release plate (9), and the stamping inner mold (14) is clamped with an inner A mold insert (16), a through hole (17) is opened in the middle of the inner mold insert (16). 2. A punching die for pipe fittings according to claim 1, characterized in that: the material of the guide post sleeve (5) is T8 high carbon steel, and the surface of the guide post sleeve (5) is a screen Hole structure. 3. A punching die for pipe fittings according to claim 1, characterized in that: the punching head (13) runs through the middle of the upper splint (8) and the stripping plate (9), and the punching head (13) acts Inside the stamping inner die (14). 4. A punching die for pipe fittings according to claim 1, characterized in that: both the upper backing plate (7) and the lower backing plate (11) are made of rubber, and the thickness of the upper backing plate (7) Less than the thickness of the lower backing plate (11). 5. A punching die for pipe fittings according to claim 1, characterized in that: the stripping plate (9) is fixedly connected to the lower backing plate (11) and the lower die base (12) through a positioning bearing (10). 6. A punching die for pipe fittings according to claim 1, characterized in that: the upper splint (8), stripping plate (9) and stamping inner die (14) are distributed in the same straight line in the vertical direction, and The upper splint (8) is equal in thickness to the stripping plate (9). 7. A punching die for pipe fittings according to claim 1, characterized in that: the cross-section of the stamping inner die (14) is an arc-shaped structure, and the back of the stamping inner die (14) is an open structure . 8. A punching die for pipe fittings according to claim 1, characterized in that there are four through holes (17) in total, and the through holes (17) have two types: waist-shaped holes and rounded square holes .