Flanging structure of stamping die

Abstract

The utility model belongs to the field of stamping dies, and discloses a flanging structure of a stamping die, which comprises a cavity plate mounted at the bottom of an upper die holder. A core plate is mounted at the top of the lower die holder, and a movable cavity is formed in the lower die holder; the flanging unit comprises an upper flanging block, a lower flanging block and a reverse wedge assembly, the upper flanging block is fixed to the upper die base, the reverse wedge assembly is installed in the movable cavity, and the lower flanging block is installed at the other end of the reverse wedge assembly. The special-shaped part is clamped and positioned through the core plate and the cavity plate, the non-machining position of the special-shaped part is prevented from being damaged, the upper flanging block is installed on the upper die base, the part can be flanged downwards when the upper die base is closed, the upper die base is connected with the reverse wedge assembly, and the reverse wedge assembly is connected with the lower flanging block, so that the part can be flanged downwards. And downward movement of the upper die base is converted into upward movement of the lower flanging block, so that the lower flanging block can perform an upward flanging function on the part, the function of simultaneously forming flanging parts in opposite directions is achieved, and the cost and the time are saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of punch die, specifically relates to a flanging structure of punch die. BACKGROUND

[0002] Flanging is a kind of punch process, refers to the flanging die and is used to the edge of plate and is processed into the straight wall or flange forming method of preset angle.

[0003] Due to the difficulty of positioning special-shaped parts, it is not suitable for progressive die to carry out multi-station continuous flanging, and single-station punch die is usually used for positioning flanging, and when special-shaped parts need to be formed at least a group of opposite flanging, the existing single-station punch die is difficult to be formed once, and using multiple dies for multiple times of stamping forming will cause the problems of increasing positioning difficulty, increasing equipment cost and slowing down production speed. UTILITY MODEL CONTENT

[0004] The utility model intends to provide a flanging structure of punch die to solve the problem that the existing single-station punch die is difficult to form multiple opposite flanging at one time.

[0005] In order to realize the above purpose, the utility model provides the following technical scheme: a flanging structure of punch die, comprising

[0006] Upper die seat, bottom installation has cavity plate;

[0007] Lower die seat, top installation has core plate, and the core plate is matched with the cavity plate, and the lower die seat has movable cavity;

[0008] Flanging unit, including upper flanging block, lower flanging block and reverse wedge assembly, the upper flanging block is fixed on the upper die seat, the reverse wedge assembly is installed in the movable cavity, and one end of the reverse wedge assembly is connected with the upper die seat, and the lower flanging block is installed on the other end of the reverse wedge assembly.

[0009] The principle and effect of the technical scheme are as follows:

[0010] 1. Through the matching of the core plate and the cavity plate, the special-shaped parts can be clamped and positioned, and the non-processing part of the special-shaped parts is prevented from being damaged, the upper flanging block is installed on the upper die seat, and then the upper die seat can be downwardly flanged when the upper die seat is closed, the upper die seat is connected with the reverse wedge assembly, and the reverse wedge assembly is connected with the lower flanging block, and then the downward movement of the upper die seat is converted into the upward movement of the lower flanging block, so that the lower flanging block can be upwardly flanged, thereby realizing the function of simultaneously forming opposite flanging parts, saving cost and time.

[0011] The utility model further sets up: reverse inclined wedge subassembly includes drive inclined wedge, transmission inclined wedge and driven inclined wedge, transmission inclined wedge is slidably installed in the bottom of movable cavity, the top surface of transmission inclined wedge has two symmetrical wedge surfaces, driven inclined wedge and movable cavity's side wall slide fit, driven inclined wedge and transmission inclined wedge's wedge surface abuts, and driven inclined wedge and transmission inclined wedge's another wedge surface abut, and the top of drive inclined wedge is connected with upper die seat.

[0012] The principle and effect of the technical scheme are as follows: the drive inclined wedge is driven by the upper die seat to move downwards to press the wedge surface of the transmission inclined wedge, and then the transmission inclined wedge moves away from the drive inclined wedge, that is, close to the driven inclined wedge, thereby generating low pressure on the driven inclined wedge; the driven inclined wedge and the movable cavity slide fit, and then the driven inclined wedge can only move upwards to move the transmission inclined wedge and the upper die seat, and the upward movement of the driven inclined wedge drives the lower flanging block to close to the flanging part, thereby stamping the flanging part, thereby achieving the function of stamping the flanging part in the opposite direction, and after the upper die seat moves away from the lower die seat, the lower flanging block can be reset by moving downwards.

[0013] The utility model further sets up: the bottom of upper die seat is fixed with connecting column, the bottom of connecting column is connected with drive inclined wedge, and drive inclined wedge and the side wall of movable cavity slide fit.

[0014] The principle and effect of the technical scheme are as follows: the movement of the upper die seat can drive the drive inclined wedge to move by the setting of the connecting column, thereby enabling the upper die seat to provide driving force for the drive inclined wedge, and the side pressure of the drive inclined wedge when pressing the transmission inclined wedge can be shared by the movable cavity by making the drive inclined wedge slide fit with the side wall of the movable cavity, thereby ensuring the strength of the connecting column.

[0015] The utility model further sets up: the wedge surface of transmission inclined wedge is installed with slide rail, and the drive inclined wedge and the driven inclined wedge are respectively slide fit with the slide rails on both sides.

[0016] The principle and effect of the technical scheme are as follows: the setting of the slide rail makes the friction force between the transmission inclined wedge and the drive inclined wedge and the driven inclined wedge smaller, thereby making it easier to move by pressing.

[0017] The utility model further sets up: the side, away from the driven inclined wedge, of movable cavity has first protrusion, and the side, close to the driven inclined wedge, of the bottom of movable cavity has second protrusion.

[0018] The principle and effect of the technical scheme are as follows: the first protrusion and the second protrusion limit the maximum stroke of the transmission inclined wedge, thereby avoiding the transmission inclined wedge moving to the position directly below the driven inclined wedge or the drive inclined wedge due to excessive movement of the transmission inclined wedge, making the transmission inclined wedge unable to normally transmit, avoiding the interference, and improving the stability during use.

[0019] The present invention is further configured such that: the flange unit also includes a reset assembly, the reset assembly includes a first nitrogen spring, the first nitrogen spring is fixed in the movable cavity and is located on the side of the movable cavity away from the driving wedge, and the end of the first nitrogen spring is connected to the transmission wedge.

[0020] The principle and effect of this technical solution: By setting the first nitrogen spring, when the driving wedge moves upward under the drive of the upper template, the elastic force of the first nitrogen spring can drive the transmission wedge to move away from the driven wedge, thereby achieving the reset control of the driving wedge. As the driving wedge moves away, the driven wedge will also descend synchronously under the action of gravity until it fits with the transmission wedge, thus achieving the reset function and saving the manual reset step.

[0021] The present invention is further configured such that: the reset assembly also includes a mounting plate and a second nitrogen spring, the mounting plate is fixed on the lower mold base and its position corresponds to the movable cavity, the second nitrogen spring is installed on the bottom of the mounting plate and its end is connected to the driven wedge, and the second nitrogen spring is located on the side of the lower flange block away from the core plate.

[0022] The principle and effect of this technical solution: By setting the mounting plate and the second nitrogen spring, the driving wedge is raised under the drive of the upper mold base, thereby relieving the pressure on the transmission wedge. The driven wedge can then move downward under the drive of the second nitrogen spring, thus following the movement of the transmission wedge. This improves the flexibility of the transmission wedge under the reset force of the first nitrogen spring and ensures uniformity. Attached Figure Description

[0023] Figure 1 This is the front view of the present invention;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 for Figure 1 Structural diagram of the upper mold base without middle mold base;

[0026] Figure 4 for Figure 3 Top view;

[0027] Figure 5 for Figure 3 Enlarged view of the structure at the mid-reverse wedge assembly;

[0028] Figure 6 for Figure 5 Side view;

[0029] Figure 7 This is a schematic diagram of the molded part manufactured according to this utility model. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0031] The reference numerals in the accompanying drawings include:

[0032] 101. Upper mold base; 102. Cavity plate; 103. Connecting pillar;

[0033] 201. Lower mold base; 202. Core plate; 203. Movable cavity; 204. First protrusion; 205. Second protrusion;

[0034] 301, Upward-facing edge piece; 302, Downward-facing edge piece;

[0035] 401. Driving wedge; 402. Transmission wedge; 403. Driven wedge; 404. Slide rail;

[0036] 501. First nitrogen spring; 502. Mounting plate; 503. Second nitrogen spring;

[0037] 601. Molded parts.

[0038] Example:

[0039] As attached Figures 1-7 As shown, this utility model discloses...

[0040] A flanging structure for a stamping die includes an upper die base 101, a lower die base 201, and a flanging unit. A cavity plate 102 is mounted on the bottom of the upper die base 101, and a core plate 202 is mounted on the top of the lower die base 201. The core plate 202 is adapted to the cavity plate 102, and one side of the core plate 202 extends beyond the cavity plate 102 to form a lower flanging groove, while another side of the cavity plate 102 extends beyond the core plate 202 to form an upper flanging groove. Figure 2 As shown, the lower mold base 201 has a movable cavity 203, the upper mold base 101 is connected to the movable end of the hydraulic press (the movable end of the hydraulic cylinder), the lower mold base 201 is installed on the machine base, and the upper mold base 101 and the lower mold base 201 are connected and guided by guide sleeves and guide posts.

[0041] The flanging unit includes an upper flanging block 301, a lower flanging block 302, and a reverse wedge assembly. The upper flanging block 301 is fixed on the upper mold base 101, and the upper flanging block 301 is adapted to the lower flanging groove of the core plate 202.

[0042] The reverse wedge assembly includes a driving wedge 401, a transmission wedge 402, and a driven wedge 403. The transmission wedge 402 is slidably mounted on the bottom of the movable cavity 203, and its top surface has two mutually symmetrical wedge surfaces. The driven wedge 403 is slidably engaged with the side wall of the movable cavity 203, and its wedge surfaces abut against those of the transmission wedge 402. A lower flange block 302 is mounted on the driven wedge 403, and its lower flange block 302 is adapted to the flange groove on the cavity plate 102. The driving wedge 401 and the transmission wedge 402... Another wedge surface abuts against each other. A connecting post 103 is fixed to the bottom of the upper mold base 101. The bottom of the connecting post 103 is connected to the driving wedge 401. The driving wedge 401 slides against the side wall of the movable cavity 203. A slide rail 404 is installed on the wedge surface of the transmission wedge 402. The driving wedge 401 and the driven wedge 403 slide against the slide rails 404 on both sides respectively. The movable cavity 203 has a first protrusion 204 on the side away from the driven wedge 403, and a second protrusion 205 on the bottom of the movable cavity 203 near the driven wedge 403. Figure 2 As shown.

[0043] The flanging unit also includes a reset assembly, which includes a first nitrogen spring 501, a mounting plate 502, and a second nitrogen spring 503. The first nitrogen spring 501 is fixed in the movable cavity 203 and is located on the side of the movable cavity 203 away from the driving wedge 401. The end of the first nitrogen spring 501 is connected to the transmission wedge 402. The mounting plate 502 is fixed on the lower mold base 201 and is positioned corresponding to the movable cavity 203. The second nitrogen spring 503 is installed at the bottom of the mounting plate 502 and the end of the second nitrogen spring 503 is connected to the driven wedge 403. The second nitrogen spring 503 is located on the side of the lower flanging block 302 away from the core plate 202.

[0044] A schematic diagram of the final molded part 601 is shown below. Figure 7 As shown.

[0045] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A flanging structure for a stamping die, characterized in that: include The upper mold base has a cavity plate installed at the bottom; The lower mold base has a core plate installed on top, the core plate being adapted to the cavity plate, and the lower mold base having a movable cavity. The flanging unit includes an upper flanging block, a lower flanging block, and a reverse wedge assembly. The upper flanging block is fixed on the upper mold base, the reverse wedge assembly is installed in the movable cavity, and one end of the reverse wedge assembly is connected to the upper mold base. The lower flanging block is installed on the other end of the reverse wedge assembly.

2. The flanging structure of a stamping die as described in claim 1, characterized in that: The reverse wedge assembly includes a driving wedge, a transmission wedge, and a driven wedge. The transmission wedge is slidably mounted on the bottom of the movable cavity. The top surface of the transmission wedge has two mutually symmetrical wedge surfaces. The driven wedge is slidably engaged with the side wall of the movable cavity. The driven wedge abuts against the wedge surface of the transmission wedge. The lower flange block is mounted on the driven wedge. The driving wedge abuts against the other wedge surface of the transmission wedge, and the top of the driving wedge is connected to the upper mold base.

3. The flanging structure of a stamping die as described in claim 2, characterized in that: A connecting column is fixed at the bottom of the upper mold base. The bottom of the connecting column is connected to the driving wedge, and the driving wedge slides against the side wall of the movable cavity.

4. The flanging structure of a stamping die as described in claim 2, characterized in that: The drive wedge is equipped with a slide rail on its wedge surface, and the drive wedge and the driven wedge slide in contact with the slide rails on both sides respectively.

5. The flanging structure of a stamping die as described in claim 2, characterized in that: The movable cavity has a first protrusion on the side away from the driven wedge, and a second protrusion on the bottom of the movable cavity near the driven wedge.

6. The flanging structure of a stamping die as described in claim 5, characterized in that: The flange unit further includes a reset assembly, which includes a first nitrogen spring. The first nitrogen spring is fixed inside the movable cavity and located on the side of the movable cavity away from the driving wedge. The end of the first nitrogen spring is connected to the transmission wedge.

7. The flanging structure of a stamping die as described in claim 6, characterized in that: The reset assembly also includes a mounting plate and a second nitrogen spring. The mounting plate is fixed on the lower mold base and its position corresponds to the movable cavity. The second nitrogen spring is installed at the bottom of the mounting plate and its end is connected to the driven wedge. The second nitrogen spring is located on the side of the lower flange block away from the core plate.

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