CN219944305U

CN219944305U - Frock suitable for panel beating extrusion

Info

Publication number: CN219944305U
Application number: CN202321717564.8U
Authority: CN
Inventors: 李江; 魏艳青; 陆新宇
Original assignee: SUZHOU XINZHI ELECTRO-MECHANICAL INDUSTRIES CO LTD
Current assignee: SUZHOU XINZHI ELECTRO-MECHANICAL INDUSTRIES CO LTD
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2023-11-03
Anticipated expiration: 2033-07-03

Abstract

The utility model relates to the technical field of extrusion molding, and discloses a tool suitable for sheet metal extrusion molding, which comprises an upper die assembly and a lower die assembly; the upper die assembly comprises an upper die base and at least two extrusion punches, wherein a blanking male die is connected to the lower part of the upper die base, and the extrusion punches are arranged in the blanking male die; the lower die assembly comprises a lower die seat and a counter top punch, a concave die plate is fixedly arranged above the lower die seat, and a blanking hole is formed in the concave die plate; after the upper die assembly and the lower die assembly are assembled, the extrusion punch can extrude the surface of the sheet metal material belt into the material, at the moment, the anti-top punch also extrudes the surface of the sheet metal material belt into the material, and as the space formed by the anti-top punch and the grooves on the inner stripper is smaller than the contour volume of the extrusion punch, part of the material extruded by the extrusion punch flows into the grooves of the inner stripper, and part of the material transversely flows to the middle area of the two extrusion punches to fill the area with the material.

Description

Frock suitable for panel beating extrusion

Technical Field

The utility model relates to the technical field of extrusion molding, in particular to a tool suitable for sheet metal extrusion molding.

Background

The sheet metal part is a product processed by a sheet metal extrusion molding process, and has the characteristics of light weight, high strength, low cost, good mass production performance and the like; the sheet metal extrusion molding belongs to one of the comprehensive metal cold working technologies, and other technologies include: bending, shearing, expanding, necking, flanging and the like, and can be widely applied to the fields of automobiles, household appliances, aviation, aerospace and the like.

At present, the existing extrusion tooling in the market is generally matched with hydraulic equipment to be used, when the extrusion tooling is used for designing small-space forming, material flowing in the middle of two parts can generate material shortage, and finally the material shortage rejection rate of parts is high, so that the processing cost is high, and the design of the extrusion tooling is needed for solving the problems that in the existing extrusion technology, the material flowing is too large after the small-space extrusion, and the material is deficient in the middle of the two small-space extrusion.

Disclosure of Invention

The tooling for sheet metal extrusion molding provided by the utility model overcomes the defects of the prior art, and has the function of solving the problem that the material flows too much after small-space extrusion molding and the material is lacked in two small-space extrusion molding intermediate materials.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a tool suitable for sheet metal extrusion molding comprises an upper die assembly and a lower die assembly which can be mutually close to or far away from each other; the upper die assembly comprises an upper die base and at least two extrusion punches, wherein a blanking punch is connected to the lower side of the upper die base, the extrusion punches are arranged in the blanking punch, and one ends of the extrusion punches protrude out of the bottom surface of the blanking punch; the lower die assembly comprises a lower die seat and a counter top punch, a concave die plate is fixedly arranged above the lower die seat, a blanking hole is formed in the concave die plate, an inner stripping piece is arranged in the blanking hole, the top of the inner stripping piece is provided with a groove relative to the extrusion punch, the counter top punch is arranged in the inner stripping piece, and one end of the counter top punch extends into the groove; the sheet metal material belt is positioned between the blanking male die and the female die plate, and after the upper die assembly and the lower die assembly are mutually close to each other and are assembled, one ends of the extrusion punch and the anti-top punch are extruded into the surface of the sheet metal material belt.

In a preferred embodiment of the utility model, a first insert hole is formed in the blanking punch, the extrusion punch is embedded in the first insert hole in a matched mode, a blanking backing plate for fixing the extrusion punch is arranged at one end of the blanking punch, and the blanking backing plate is fixedly connected with the upper die base.

In a preferred embodiment of the utility model, a second insert hole is formed in the inner stripper, the counter top punch is embedded in the second insert hole in a matched mode, an inner stripper base plate for fixing the counter top punch is arranged at one end of the inner stripper, and ejector rod assemblies are arranged in the blanking punch and the inner stripper.

In a preferred embodiment of the present utility model, a movable groove for moving the inner release member is formed on one side of the lower die holder, a second dowel bar is movably disposed on the lower die holder in a penetrating manner, and one end of the second dowel bar can extend into the movable groove and is abutted to the inner release backing plate.

In a preferred embodiment of the utility model, a stripper plate and a punch plate are sleeved on the outer side of the blanking punch in a sliding manner, the punch plate is fixedly arranged at the bottom of the stripper plate, and the stripper plate is movably connected with the upper die holder through a contour screw assembly; the upper die holder is movably provided with a first dowel bar in a penetrating way, and one end of the first dowel bar can penetrate through the blanking backing plate to be abutted to the upper end of the blanking plate.

In a preferred embodiment of the utility model, both ends of the stripper plate are fixedly connected with guide members for supporting the sheet metal material strips, both guide members are provided with guide openings, and the sheet metal material strips sequentially pass through the two guide openings.

In a preferred embodiment of the present utility model, the contour screw assembly includes a countersunk hole formed in the upper die holder, a sliding sleeve is slidably disposed in the countersunk hole, a screw body is disposed in the sliding sleeve in a penetrating manner, and one end of the screw body penetrates through the sliding sleeve to be connected with the stripper plate.

In a preferred embodiment of the present utility model, a guide sleeve hole is formed on the female die plate, a guide pillar is disposed in the male die plate, and one end of the guide pillar can be cooperatively inserted into the guide sleeve hole.

In a preferred embodiment of the utility model, the ejector rod assembly comprises stepped holes, the stepped holes are respectively arranged on the blanking male die and the female die plate, a material ejection rod is slidably arranged in the stepped holes, one end of the material ejection rod is provided with a spring, and the other end of the material ejection rod can be in contact with the sheet metal part falling off from the sheet metal material belt.

The utility model solves the defects existing in the background technology, and has the beneficial effects that:

(1) In the utility model, after the upper die assembly and the lower die assembly are assembled, the extrusion punch can extrude the surface of the sheet metal material belt into which the material is extruded by the counter-top punch, and the space formed by the counter-top punch and the grooves on the inner stripper is smaller than the contour volume of the extrusion punch, so that part of the material extruded by the extrusion punch flows into the grooves of the inner stripper, and part of the material transversely flows to the middle area of the two extrusion punches to fill the area with the material; the structure can solve the problem of material shortage in the middle of forming caused by overlarge material flowing after small-spacing extrusion forming, and further achieve the purpose of reducing the rejection rate and the processing cost.

(2) In the utility model, the extrusion punch and the counter top punch are subjected to insert design, so that the extrusion punch and the counter top punch can be quickly replaced after being worn and damaged, and the use cost is greatly reduced; and the problem of material thickening caused by material shortage compensation and material transverse flow can be adjusted by changing the anti-top punch heads with different lengths to adjust the protruding height, so that the machining allowance can be adjusted for subsequent machining.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view showing a structure of an upper and lower die assembly in a die assembly according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the construction of the upper and lower die assemblies of the preferred embodiment of the present utility model after they are released;

FIG. 3 is a schematic view of the upper die assembly of the preferred embodiment of the present utility model;

FIG. 4 is a schematic view of the lower die assembly according to the preferred embodiment of the present utility model;

FIG. 5 is a schematic view of the construction of the ejector pin assembly of the preferred embodiment of the present utility model;

wherein, 1, upper die holder; 2. a lower die holder; 3. a blanking male die; 4. extruding a punch; 5. a female template; 6. an inner stripper; 7. a counter top punch; 8. a contour screw assembly; 801. a countersunk hole; 802. a sliding sleeve; 803. a screw body; 9. a push rod assembly; 901. a stepped hole; 902. a material ejecting rod; 903. a spring; 10. a first dowel bar; 11. a second dowel bar; 12. a stripper plate; 13. blanking backing plates; 14. an inner release backing plate; 15. a material guide; 16. a material guiding port; 17. a sheet metal material belt; 18. a sheet metal part; 19. a guide sleeve hole; 20. a guide post; 21. and (5) a convex template.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.

As shown in fig. 1-2, a tooling suitable for sheet metal extrusion molding comprises an upper die assembly and a lower die assembly which can be mutually close to or far away from each other, wherein the relative motion between the upper die assembly and the lower die assembly can be driven by corresponding hydraulic equipment, namely a hydraulic cylinder, or can be driven by an assembly outputting linear motion through a cylinder and the like, and after the upper die assembly and the lower die assembly are mutually close to each other under the driving of the hydraulic equipment and are clamped, the sheet metal material belt 17 is blanked, cut and extruded to finally form a sheet metal part 18.

As shown in fig. 1-3, the upper die assembly comprises an upper die holder 1 and at least two extrusion punches 4, wherein a blanking punch 3 is connected below the upper die holder 1, the extrusion punches 4 are arranged in the blanking punch 3, and one ends of the extrusion punches protrude from the bottom surface of the blanking punch 3.

The blanking punch 3 is internally provided with the first insert hole, and the tail end of the extrusion punch 4 is provided with the bulge so as to be conveniently embedded into the first insert hole in a matched manner, and the bulge is clamped with the first insert hole, so that the extrusion punch 4 is prevented from sliding off from the first insert hole; after the extrusion punch 4 is embedded into the first insert hole, the blanking pad 13 is fixedly connected to the blanking punch 3 by a screw to support the extrusion punch 4, and the blanking pad 13 is fixedly mounted on the upper die holder 1 by the screw.

Further, the blanking punch 3 is provided with a stripper plate 12 and a punch plate 21 in a sliding sleeve manner, the punch plate 21 is fixedly arranged at the bottom of the stripper plate 12 through screws, a first dowel bar 10 is movably arranged on the upper die holder 1 in a penetrating manner, and one end of the first dowel bar 10 can penetrate through the blanking base plate 13 to be abutted against the upper end of the stripper plate 12.

Specifically, the pressure of the hydraulic device can be transmitted to the stripper plate 12 through the first dowel 10 so as to drive the stripper plate 12 and the male die plate 21 to slide along the longitudinal direction, and the stripper plate 12 is movably connected with the upper die holder 1 through the contour screw assembly 8 so as to ensure the connection strength between the stripper plate 12 and the upper die holder 1 while being convenient for sliding.

The contour screw assembly 8 includes a countersunk hole 801 formed in the upper die holder 1, a sliding sleeve 802 is slidably inserted in the countersunk hole 801, a screw body 803 is inserted in the sliding sleeve 802, the screw body 803 is fixedly connected with the sliding sleeve 802 through threads, and one end of the screw body passes through the sliding sleeve 802 and is fixedly connected with the stripper plate 12 through threads; when the stripper plate 12 slides longitudinally, the sliding sleeve 802 can drive the screw body 803 to float up and down in the countersunk hole 801, so that the stripper plate 12 slides and the connection relationship between the stripper plate and the upper die holder 1 is stable.

Further, the two ends of the stripper plate 12 are fixedly connected with the guide pieces 15 for supporting the sheet metal material belt 17, the guide pieces 15 are fixedly connected with the stripper plate 12 through bolts, the two guide pieces 15 are provided with the guide openings 16, and the sheet metal material belt 17 sequentially passes through the two guide openings 16 so as to support the sheet metal material belt 17 through the guide openings 16, thereby facilitating continuous movement of the sheet metal material belt 17 and avoiding bending and deflection changes.

As shown in fig. 1-2 and fig. 4, the lower die assembly comprises a lower die holder 2 and a counter top punch 7, a die plate 5 is fixedly arranged above the lower die holder 2, a blanking hole is formed in the die plate 5, an inner stripping piece 6 is arranged in the blanking hole, the top of the inner stripping piece 6 is provided with a groove relative to the extrusion punch 4, the counter top punch 7 is arranged in the inner stripping piece 6, and one end of the counter top punch 7 extends into the groove; in the process of die assembly, the sheet metal material belt 17 is cut off by the blanking male die 3 and pressed into the blanking hole of the female die plate 5.

The inner stripper 6 is provided with the second insert hole, the counter top punch 7 is embedded in the second insert hole in a matching manner, and the limit is realized by the clamping connection of the protrusion and the insert hole as well as the matching of the extrusion punch 4 and the first insert hole, except that the counter top punch 7 is supported and fixed by the inner stripper plate 14, and the inner stripper plate 14 is fixedly arranged at one end of the inner stripper 6 by a screw.

Further, a movable groove is formed in one side of the lower die holder 2, the inner release piece 6 can longitudinally move in the movable groove, a second dowel bar 11 is movably arranged on the lower die holder 2 in a penetrating mode, and one end of the second dowel bar 11 can extend into the movable groove and is in butt joint with the inner release base plate 14; the pressure of the hydraulic device can be transmitted to the inner release liner 14 through the second dowel 11, so that the inner release member 6 can be driven to slide in the movable groove along the longitudinal direction.

In summary, the sheet metal belt 17 is positioned between the blanking male die 3 and the female die plate 5, and after the upper die assembly and the lower die assembly are mutually close to each other and are clamped under the action of hydraulic equipment, one ends of the extrusion punch 4 and the anti-top punch 7 are extruded into the surface of the sheet metal belt 17; since the space formed by the counter top punch 7 and the grooves on the inner stripper 6 is smaller than the contour volume of the extrusion punch 4, part of the material extruded by the extrusion punch 4 flows into the grooves of the inner stripper 6, and part of the material flows transversely to the middle area of the two extrusion punches 4, and fills the area with material. The smaller the distance between the extrusion punches 4, the greater the material flow in the middle region and the more pronounced the shortage of material, by means of which the shortage of material in this region can be ameliorated.

Further, a guide sleeve hole 19 is formed in the female die plate 5, a guide pillar 20 is arranged in the male die plate 21, and one end of the guide pillar 20 can be embedded into the guide sleeve hole 19 in a matching manner. When the upper die assembly and the lower die assembly are relatively matched under the action of hydraulic equipment, the guide post 20 enters the guide sleeve hole 19 for positioning and guiding.

In addition, the blanking male die 3 and the inner stripper 6 are respectively provided with a push rod assembly 9, so that the formed sheet metal part 18 is supported and ejected, and adhesion between the sheet metal part and the male die plate 21 or the female die plate 5 is avoided.

As shown in fig. 5, the ejector rod assembly 9 includes a stepped hole 901, the stepped hole 901 is respectively provided on the blanking male die 3 and the female die plate 5, a ejector rod 902 is slidably mounted in the stepped hole 901, one end of the ejector rod 902 is provided with a spring 903, and the other end of the ejector rod 902 can be in contact with a sheet metal part 18 falling off from the sheet metal belt 17. Before the die is not closed, one end of the ejector rod 902 extends out of the stepped hole 901 under the action of the spring 903, and when the die is closed, the ejector rod 902 contacts with the sheet metal belt 17 and is subjected to the reaction force, so that the spring 903 is contracted, and the ejector rod 902 is contracted into the stepped hole 901; after the extrusion molding is opened, the ejector rod 902 is again extended out of the stepped hole 901 by the action of the spring 903, and the molded sheet metal part 18 is ejected from the upper surface of the inner stripper 6 and the lower surface of the blanking punch 3.

The technical scheme disclosed above is utilized to execute sheet metal extrusion forming processing of materials, and the specific working steps and principles are as follows.

And (3) assembling an upper die assembly: firstly, an extrusion punch 4 passes through a first insert hole from top to bottom and is arranged in a blanking punch 3, then a blanking backing plate 13 is fixed on the blanking punch 3 through a screw, and then the blanking backing plate 13 is fixed below an upper die holder 1 through the screw; then the convex die plate 21 is fixed at the bottom of the stripper plate 12 through screws, the assembled convex die plate 21 and the stripper plate 12 are sleeved outside the blanking male die 3, and the stripper plate 12 and the upper die holder 1 are connected together through the contour screw assembly 8; finally, two guide pieces 15 are relatively fixed on two sides of the stripper plate 12, and the sheet metal material belt 17 sequentially passes through the two guide openings 16 and is positioned below the blanking male die 3.

The assembly process of the lower die assembly comprises the following steps: firstly, the counter top punch 7 passes through a second insert hole from bottom to top to be installed inside the inner stripper 6, and then the inner stripper plate 14 is fixed on the inner stripper 6 through screws so as to form fixed support for the counter top punch 7; the die plate 5 is then fixed over the lower die holder 2 and the inner stripper 6 is placed into the blanking hole in the die plate 5.

Before extrusion forming, the hydraulic equipment P1 is started, the stripper plate 12 is propped against by the first dowel bar 10, the stripper plate 12 is connected with the male die plate 21, and the sheet metal material belt 17 can be pressed during processing; the hydraulic equipment P2 is started, the second dowel bar 11 is used for supporting the inner release base plate 14, the inner release base plate 14 is connected with the inner release piece 6, and the sheet metal part 18 to be formed can be pressed during processing.

When sheet metal extrusion molding begins, the hydraulic equipment P starts, the upper die assembly and the lower die assembly are relatively clamped, the guide pillar 20 enters the guide sleeve hole 19 on the female die plate 5 to be positioned, the sheet metal material belt 17 is clamped by the male die plate 21 and the inner stripper 6 under the action of the hydraulic equipment P1 and P2, the upper die assembly and the lower die assembly continuously clamp the die and move, the male die plate 21 and the stripper plate 12 move upwards together with the first dowel 10, the sheet metal part 18 is cut off by the blanking male die 3 from the sheet metal material belt 17 and pressed into the blanking hole on the female die plate 5, and the inner stripper 6, the inner stripper plate 14 and the second dowel 11 move downwards along with the extrusion of the sheet metal part 18 into the female die plate 5.

In the sheet metal extrusion forming process, the extrusion punch 4 is pressed into the surface of the sheet metal part 18, part of material of the sheet metal part 18 flows into the groove of the inner stripper 6, part of material is thickened by the transverse flow material blocked by the counter top punch 7, and part of material flows and fills the area easy to be starved in the middle of the extrusion punch 4, so that the problem of stamping starved is solved.

After the sheet metal extrusion molding is finished, the upper die assembly and the lower die assembly start to be separated under the action of the hydraulic equipment P3, and the sheet metal material belt 17 moves downwards together with the first dowel bar 10 through the convex die plate 21 and the stripper plate 12 under the action of the hydraulic equipment P1, so that the sheet metal material belt 17 is dismounted from the blanking male die 3; the sheet metal part 18 moves upwards together through the inner stripper 6, the inner stripper plate 14, the ejector rod assembly 9 and the second dowel bar 11 under the action of the hydraulic device P2, and the sheet metal part 18 is ejected from the die plate 5.

The tool is used in cooperation with a plurality of hydraulic devices, and P, P, P2 and P3 are all hydraulic devices, which are only used for distinguishing.

The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. Frock suitable for panel beating extrusion, its characterized in that: comprises an upper die assembly and a lower die assembly which can be mutually close to or far away from each other; the upper die assembly comprises an upper die holder (1) and at least two extrusion punches (4), wherein a blanking punch (3) is connected below the upper die holder (1), the extrusion punches (4) are arranged in the blanking punch (3), and one ends of the extrusion punches protrude out of the bottom surface of the blanking punch (3); the lower die assembly comprises a lower die holder (2) and a counter top punch (7), a die plate (5) is fixedly arranged above the lower die holder (2), a blanking hole is formed in the die plate (5), an inner stripping piece (6) is arranged in the blanking hole, the top of the inner stripping piece (6) is provided with a groove relative to the extrusion punch (4), and the counter top punch (7) is arranged in the inner stripping piece (6), and one end of the counter top punch extends into the groove; the sheet metal material belt (17) is positioned between the blanking male die (3) and the female die plate (5), and after the upper die assembly and the lower die assembly are close to each other, one ends of the extrusion punch (4) and the anti-top punch (7) are extruded into the surface of the sheet metal material belt (17).

2. The tooling suitable for sheet metal extrusion as claimed in claim 1, wherein: the blanking punch (3) is internally provided with a first insert hole, the extrusion punch (4) is embedded in the first insert hole in a matched mode, one end of the blanking punch (3) is provided with a blanking base plate (13) for fixing the extrusion punch (4), and the blanking base plate (13) is fixedly connected with the upper die holder (1).

3. The tooling suitable for sheet metal extrusion as claimed in claim 2, wherein: the inner stripper (6) is internally provided with a second insert hole, the counter top punch (7) is embedded in the second insert hole in a matched mode, one end of the inner stripper (6) is provided with an inner stripper base plate (14) for fixing the counter top punch (7), and the blanking punch (3) and the inner stripper (6) are both internally provided with a push rod assembly (9).

4. A tooling suitable for sheet metal extrusion as claimed in claim 3 wherein: a movable groove for the movement of the inner release piece (6) is formed in one side of the lower die holder (2), a second dowel bar (11) is movably arranged on the lower die holder (2) in a penetrating mode, and one end of the second dowel bar (11) can extend into the movable groove and is abutted to the inner release base plate (14).

5. The tooling suitable for sheet metal extrusion as set forth in claim 4, wherein: the blanking punch (3) is sleeved with a stripper plate (12) and a punch plate (21) in a sliding manner, the punch plate (21) is fixedly arranged at the bottom of the stripper plate (12), and the stripper plate (12) is movably connected with the upper die holder (1) through a contour screw assembly (8); the upper die holder (1) is movably provided with a first dowel bar (10), and one end of the first dowel bar (10) can penetrate through the blanking backing plate (13) to be abutted to the upper end of the stripping plate (12).

6. The tooling suitable for sheet metal extrusion as set forth in claim 5, wherein: the two ends of the stripper plate (12) are fixedly connected with guide pieces (15) for supporting the sheet metal material belts (17), two guide openings (16) are formed in the guide pieces (15), and the sheet metal material belts (17) sequentially penetrate through the two guide openings (16).

7. The tooling suitable for sheet metal extrusion as set forth in claim 5, wherein: the equal-height screw assembly (8) comprises a countersunk hole (801) formed in the upper die holder (1), a sliding sleeve (802) is arranged in the countersunk hole (801) in a sliding mode, a screw body (803) is arranged in the sliding sleeve (802) in a penetrating mode, and one end of the screw body (803) penetrates through the sliding sleeve (802) to be connected with the stripper plate (12).

8. The tooling suitable for sheet metal extrusion as set forth in claim 7, wherein: a guide sleeve hole (19) is formed in the female die plate (5), a guide pillar (20) is arranged in the male die plate (21), and one end of the guide pillar (20) can be embedded into the guide sleeve hole (19) in a matching mode.

9. A tooling suitable for sheet metal extrusion as claimed in claim 3 wherein: the ejector rod assembly (9) comprises a stepped hole (901), the stepped hole (901) is respectively formed in the blanking male die (3) and the female die plate (5), a material ejection rod (902) is slidably installed in the stepped hole (901), a spring (903) is arranged at one end of the material ejection rod (902), and the other end of the material ejection rod can be in contact with a sheet metal part (18) falling off from the sheet metal belt (17).