CN220970406U

CN220970406U - Die device for producing external-elliptic internal-connection double-hole section bar

Info

Publication number: CN220970406U
Application number: CN202322546154.8U
Authority: CN
Inventors: 王锦永; 潘孝达; 陆亚楠; 陈新河
Original assignee: Handan Xinxing Special Pipe Co ltd
Current assignee: Handan Xinxing Special Pipe Co ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-05-17
Anticipated expiration: 2033-09-19

Abstract

The utility model discloses a die device for producing an external elliptic internal connection double-hole section bar, which comprises a die pad, a die holder, a supporting block, an external die, an extrusion cylinder, a combined core rod, an extrusion pad, a core rod connecting piece, a core rod supporting rod and a thrust rod, and is characterized in that: the outer die is provided with a first cavity and a first positioning hole, the outer shape of the outer die is a cake shape, the axial thickness is 30-38 mm, the included angle alpha between the upper surface and the lower surface is 24-26 degrees, and the surface roughness is not more than 0.8 mu m; the first cavity determines the external contour dimension of the profile, and the long-axis drainage arc radius R2 of the inlet transition zone is smaller than the short-axis drainage arc radius R1 of the inlet transition zone, the middle sizing zone and the outlet reverse taper zone. The die device for producing the outer oval inner connecting double-hole profile has the advantages of convenience in die replacement and flexibility in operation, improves the extrusion forming process, enables the outer oval inner connecting double-hole profile to be deformed in one pass and can be formed, and avoids welding seams caused by the traditional process forming.

Description

Die device for producing external-elliptic internal-connection double-hole section bar

Technical Field

The utility model relates to the technical field of profile processing, in particular to a die device for producing an external elliptic internal connection double-hole profile.

Background

The section bar is an economic and efficient material with more optimized sectional area distribution and more reasonable weight ratio, has strong bending resistance in all directions, has the characteristics of high structural strength, light weight and cost saving, and is widely used in all fields as a structural member:

the utility model discloses a stamping die for profile processing, which is disclosed by the utility model with the number of CN210160263U, wherein a lower die is embedded on the upper surface of a working platform, upright posts are also arranged on the upper surface of the working platform, two groups of upright posts are arranged on two sides of the working platform symmetrically, a cross rod is fixedly connected between the upper ends of the two groups of upright posts, a groove is formed in the inner side of the upright post, a sliding block is arranged in the groove, a shell is arranged on the upper surface of the cross rod, a heat dissipation hole is formed in the upper end of the shell, a servo electric cylinder is further arranged in the shell, a screw rod in the servo electric cylinder penetrates through the cross rod and is connected with the upper die, and two sides of the upper die are fixedly connected with the two groups of sliding blocks respectively;

The stamping die for profile processing processes the profile through stamping, the conventional profile is generally produced by adopting a forming method of hot rolling, welding or machining, the hot rolling can reasonably distribute the deformation process of the section size, and the stamping die has the advantage of high production efficiency, but for complex profiles with double holes of an outer ellipse and an inner body, the hot rolling can lead to poor surface quality of the product and influence the dimensional accuracy. The welding process is to weld the dispersed parts together to form an integral structure, so that the operation is flexible, but the defects of air holes, slag inclusion, incomplete penetration, incomplete fusion, cracks and the like are easy to occur in welding, and the uniformity of the product performance is not easy to ensure. The machining is a mode of turning the blank into corresponding size and shape, the metal loss is large, the yield is low, and the length of the produced profile is not easy to be too long.

Disclosure of utility model

The utility model aims to provide a die device for producing an external-elliptic internal-connection double-hole section bar, which solves the problems that the surface quality of a product is poor, the dimensional accuracy is affected, the product performance is not easy to ensure, the metal loss is large, the yield is low, and the length of the produced section bar is not easy to be too long due to hot rolling proposed in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the die device for producing the external elliptic internal connecting double-hole section bar comprises a die pad, a die holder, a supporting block, an external die, an extrusion cylinder, a combined mandrel, the extrusion pad, a mandrel connecting piece, a mandrel supporting rod and a thrust rod, wherein the external die is provided with a first cavity and a first positioning hole, the external die is in a shape of a round cake, the axial thickness is 30-38 mm, the included angle alpha between the upper surface and the lower surface is 24-26 degrees, and the surface roughness is not more than 0.8 mu m; the first cavity determines the external outline size of the profile, the profile consists of an inlet transition region, a middle sizing region and an outlet reverse taper region, the long-axis drainage arc radius R2 of the inlet transition region is smaller than the short-axis drainage arc radius R1, the middle zones of the R2 and the R1 are smoothly transited, and the length of the middle sizing region is 8-12 mm; the combined mandrel comprises a needle point and a mandrel body, the length of the needle point is 250-400 mm, the length of the combined mandrel is 260mm larger than that of a blank, the needle point in front of the combined mandrel determines the internal contour dimension of the section bar, the shape of a sizing area in the middle of a first cavity on the outer die is consistent with the shape of the outer oval internal double-hole section bar, and the shape of the needle point of the combined mandrel is consistent with the shape of the inner cavity of the outer oval internal double-hole section bar.

Further, an outer die is arranged on the die holder, a supporting block and a die pad are sequentially arranged behind the outer die, and the supporting block and the die pad jointly play a role in supporting the outer die; a positioning hole is formed between the outer die and the supporting block, and a positioning pin can be arranged in the positioning hole and used for aligning the cavity so as to avoid dislocation; the outer die is provided with 2 first positioning holes which are symmetrically arranged; the support block is provided with 2 second positioning holes, the second positioning holes are symmetrically arranged, and the structure reflects the position effect of the outer die and the support block.

Furthermore, the front end structure shape of the extrusion cylinder is arranged corresponding to the die holder structure shape, the length is 1500mm, the taper of 0.2 mm-0.8 mm is arranged in the length direction of the inner circle, and the structure reflects the positions and the lengths of the extrusion cylinder and the die holder.

Further, the shape of the second cavity of the supporting block and the shape of the first cavity of the outer mold are consistent with the external profile of the section bar, the size of the cavity of the supporting block is 20-25 mm larger than that of the outer mold, the cavity of the die pad is circular, a groove is formed in the outer circumference of the supporting block, which is close to the contact surface of the supporting block and the outer mold, a hoisting hole is formed above the die pad and the die holder, the bottom is fixed by a clamping groove, and the structure shows the effects of the shapes of the supporting block and the outer mold.

Further, the extrusion pad is of a hollow cylindrical structure, the length of the extrusion pad in the axial direction is 150mm, the outer diameter of the extrusion pad is smaller than the inner diameter of the extrusion cylinder by 1.5-3.0 mm, the inside of the thrust rod is of a hollow structure, the thrust rod applies force to the high-temperature blank through the extrusion pad to deform the high-temperature blank, the extrusion pad plays a role in transmitting extrusion force, and the structure reflects the length and the installation mode of the extrusion pad.

Further, the combined core rod is connected with the core rod connecting piece through threads, and the core rod connecting piece is connected with the core rod supporting rod through threads; the core rod supporting rod controls the position of the needle point in front of the combined core rod through forward and backward movement, so that the needle point and the middle sizing area of the outer mold cavity form a section cavity to be produced, and the structure shows the effect of the installation mode between the combined core rod and the core rod connecting piece.

Compared with the prior art, the utility model has the beneficial effects that:

1. the die device for producing the outer oval inner connecting double-hole profile has the advantages of convenience in die replacement and flexibility in operation, improves the extrusion forming process, enables the outer oval inner connecting double-hole profile to be formed by one-pass deformation, and avoids welding seams caused by the traditional process forming;

2. The die device for producing the external-elliptic internal-body double-hole section bar improves the dimensional accuracy and the surface quality of the product, completes a metal streamline on a microstructure, has good performance stability, and is suitable for the field with higher technical index requirements.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model in a front cross-section;

FIG. 2 is a schematic view of an outer oval inner connecting double hole type material structure according to the present utility model;

FIG. 3 is a schematic diagram of the side cross-sectional structure of the outer mold of the present utility model;

FIG. 4 is a schematic diagram of the structure of the outer mold in the front cross section of the utility model;

FIG. 5 is a schematic diagram of the front view of the outer mold of the present utility model;

FIG. 6 is a schematic side cross-sectional view of a support block of the present utility model;

FIG. 7 is a schematic diagram of the front view of the support block of the present utility model;

FIG. 8 is a schematic diagram of a support block of the present utility model in a cross-sectional elevation view;

FIG. 9 is a schematic diagram of the front view of the assembled mandrel of the present utility model;

FIG. 10 is a schematic side view of the assembled mandrel of the present utility model.

In the figure: 1. a die pad; 2. a die holder; 3. a support block; 301. a second cavity; 302. a second positioning hole; 4. an outer mold; 401. a first cavity; 402. a first positioning hole; 5. a glass mat; 6. an extrusion cylinder; 7. a combined core rod; 701. a needle tip; 702. a first thread; 703. a core rod body; 704. a second thread; 8. a squeeze pad; 9. a mandrel connector; 10. a core rod supporting rod; 11. a thrust rod; 12. blank material; 13. and (5) sectional materials.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 10, the present utility model provides a technical solution: the die device for producing the external elliptic internal connection double-hole section bar comprises a die pad 1, a die holder 2, a supporting block 3, a second die cavity 301, a second positioning hole 302, an external die 4, a first die cavity 401, a first positioning hole 402, a glass pad 5, an extrusion cylinder 6, a combined mandrel 7, a needle point 701, a first thread 702, a mandrel body 703, a second thread 704, an extrusion pad 8, a mandrel connecting piece 9, a mandrel supporting rod 10, a thrust rod 11, a blank 12 and a section bar 13.

In this embodiment: the outer die 4 is provided with a first cavity 401 and a first positioning hole 402, the outer shape of the outer die 4 is a cake shape, the axial thickness is 30 mm-38 mm, the included angle alpha between the upper surface and the lower surface is 24-26 degrees, and the surface roughness is not more than 0.8 mu m; the first cavity 401 determines the external contour dimension of the section bar 13, and consists of an inlet transition region, a middle sizing region and an outlet reverse taper region, wherein the long-axis drainage arc radius R2 of the inlet transition region is smaller than the short-axis drainage arc radius R1, the middle zones of the R2 and the R1 are smoothly transited, and the length of the middle sizing region is 8-12 mm; the combined mandrel 7 comprises a needle point 701 and a mandrel body 703, the length of the needle point 701 is 250-400 mm, the length of the combined mandrel 7 is 260mm larger than the length of the blank 12, the needle point in front of the combined mandrel 7 determines the internal contour dimension of the profile, the shape of the middle sizing area of the first cavity 401 on the outer die 4 is consistent with the shape of the external oval internal double-hole profile, and the shape of the needle point 701 of the combined mandrel 7 is consistent with the shape of the internal cavity of the external oval internal double-hole profile.

An outer die 4 is arranged on the die holder 2, a supporting block 3 and a die pad 1 are sequentially arranged behind the outer die 4, and the supporting block 3 and the die pad 1 jointly play a role in supporting the outer die 4; a positioning hole is arranged between the outer die 4 and the supporting block 3, and a positioning pin can be arranged in the positioning hole and used for aligning the cavity so as to avoid dislocation; the outer die 4 is provided with 2 first positioning holes 402, and the first positioning holes 402 are symmetrically arranged; the support block 3 is provided with 2 second positioning holes 302, the second positioning holes 302 are symmetrically arranged, the front end structure of the extrusion cylinder 6 is correspondingly arranged with the structure shape of the die holder 2, the length is 1500mm, the taper of 0.2-0.8 mm is arranged in the length direction of an inner circle, the shape of a second cavity 301 of the support block 3 and the shape of a first cavity 401 of the outer die 4 are consistent with the outer contour of a section bar 13, the size of the support block 3 is 20-25 mm larger than that of the cavity of the outer die 4, the cavity of the die pad 1 is circular, a concave groove is arranged on the outer circumference of the support block 3 close to the contact surface of the support block 3 and the outer die 4, a lifting hole is designed above the die pad 1 and the die holder 2, the bottom is fixed by adopting a clamping groove, the extrusion pad 8 is of a hollow cylindrical structure, the length of the extrusion pad 8 along the axis direction is 150mm, the outer diameter of the extrusion pad 8 is 1.5-3.0 mm smaller than the inner diameter of the extrusion cylinder 6, the inside of the thrust rod 11 is of a hollow structure, the thrust rod 11 deforms the extrusion pad 12 towards the high temperature blank 8 through the extrusion pad 8, the extrusion pad 8 acts as a transmission extrusion force, the combined part 7 and the connecting piece 9 are connected with the mandrel 10 through the connecting piece through the thread, and the mandrel 10 is connected with the mandrel 10 through the connecting piece; the position of the needle point 701 in front of the combined mandrel 7 is controlled by the mandrel supporting rod 10 through back and forth movement, so that the needle point 701 and the middle sizing area of the cavity of the outer die 4 form a cavity of the profile 13 to be produced;

Working principle: firstly, a supporting block 3, an outer die 4, an extrusion cylinder 6, a combined mandrel 7, an extrusion pad 8 and a thrust rod 11 with corresponding sizes are arranged, a blank 12 is heated to a high temperature of 1050-1250 ℃, then, a glass powder lubricant is coated, the glass powder lubricant is filled into the extrusion cylinder 6, and the thrust rod 11 is used for pushing the extrusion pad 8 and the blank 12 to move to the front end of the outer die 4 in the extrusion direction. After the front end of the blank 12 contacts with the glass cushion 5 closely attached to the outer die 4, the position of the needle point 701 in front of the combined core rod 7 is controlled by the core rod supporting rod 10 through back and forth movement, so that the needle point 701 and the middle sizing area of the cavity of the outer die 4 form a cavity of the profile 13 to be produced, and then a locking device is started to fix the position of the needle point 701. The thrust rod 11 continues to push forward, the blank 12 is pressed through the extrusion pad 8, upsetting deformation is firstly carried out on the blank 12, gaps between the outer circle of the blank 12 and the inner wall of the extrusion cylinder 6 are eliminated, gaps between the inner circle of the blank 12 and the combined core rod 7 are eliminated, and then the blank 12 is extruded into a cavity formed by the needle point 701 and the outer die 4 to form a required profile 13.

What is not described in detail in this specification is prior art known to those skilled in the art.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a mould device for producing oval internal connection diplopore section bar outward, includes die pad (1), die holder (2), supporting shoe (3), external mold (4), extrusion section bar (6), combination plug (7), extrusion pad (8), plug connecting piece (9), plug bracing piece (10) and distance rod (11), its characterized in that: the outer die (4) is provided with a first cavity (401) and a first positioning hole (402), the outer shape of the outer die (4) is a cake shape, the axial thickness is 30-38 mm, the included angle alpha between the upper surface and the lower surface is 24-26 degrees, and the surface roughness is not more than 0.8 mu m; the first cavity (401) determines the external outline size of the profile (13), and consists of an inlet transition region, a middle sizing region and an outlet reverse taper region, wherein the long axis drainage arc radius R2 of the inlet transition region is smaller than the short axis drainage arc radius R1, the middle zones of the R2 and the R1 are smoothly transited, and the length of the middle sizing region is 8-12 mm; the combined mandrel (7) comprises a needle point (701) and a mandrel body (703), the length of the needle point (701) is 250-400 mm, the length of the combined mandrel (7) is 260mm larger than that of a blank (12), the needle point in front of the combined mandrel (7) determines the internal profile size of the profile, the shape of a sizing area in the middle of a first cavity (401) on an outer die (4) is consistent with the shape of the external elliptic internal double-hole profile, and the shape of the needle point (701) of the combined mandrel (7) is consistent with the shape of the inner cavity of the external elliptic internal double-hole profile.

2. A mould device for producing an external elliptic internal body double hole profile according to claim 1, characterized in that: an outer die (4) is arranged on the die holder (2), a supporting block (3) and a die pad (1) are sequentially arranged behind the outer die (4), and the supporting block (3) and the die pad (1) jointly play a role in supporting the outer die (4); a positioning hole is arranged between the outer die (4) and the supporting block (3), and a positioning pin can be arranged in the positioning hole and used for aligning the cavity so as to avoid dislocation; the outer die (4) is provided with 2 first positioning holes (402), and the first positioning holes (402) are symmetrically arranged; the support block (3) is provided with second positioning holes (302), and the number of the second positioning holes (302) is 2 and the second positioning holes are symmetrically arranged.

3. A mould device for producing an external elliptic internal body double hole profile according to claim 1, characterized in that: the front end structure shape of the extrusion cylinder (6) is arranged corresponding to the structure shape of the die holder (2), the length is 1500mm, and the taper of 0.2-0.8 mm is formed in the length direction of the inner circle.

4. A mould device for producing an external elliptic internal body double hole profile according to claim 1, characterized in that: the shape of the second cavity (301) of the supporting block (3) and the shape of the first cavity (401) of the outer die (4) are consistent with the outer contour of the section bar (13), the size of the cavity of the supporting block (3) is 20-25 mm larger than that of the outer die (4), the cavity of the die pad (1) is circular, a groove is formed in the outer circumference of the supporting block (3) close to the contact surface of the supporting block (3) and the outer die (4), a hoisting hole is formed in the upper portion of the die pad (1) and the die holder (2), and the bottom of the die pad is fixed through a clamping groove.

5. A mould device for producing an external elliptic internal body double hole profile according to claim 1, characterized in that: the extrusion pad (8) is of a hollow cylindrical structure, the length of the extrusion pad (8) along the axis direction is 150mm, the outer diameter of the extrusion pad (8) is smaller than the inner diameter of the extrusion cylinder (6) by 1.5-3.0 mm, the inside of the thrust rod (11) is of a hollow structure, the thrust rod (11) applies force to the high-temperature blank (12) through the extrusion pad (8) to enable the high-temperature blank to deform, and the extrusion pad (8) plays a role in transmitting extrusion force.

6. A mould device for producing an external elliptic internal body double hole profile according to claim 1, characterized in that: the combined core rod (7) is connected with the core rod connecting piece (9) through threads, and the core rod connecting piece (9) is connected with the core rod supporting rod (10) through threads; the position of the needle point (701) in front of the combined core rod (7) is controlled by the core rod supporting rod (10) through back and forth movement, so that the needle point (701) and the middle sizing area of the cavity of the outer die (4) form a cavity of the profile (13) to be produced.