Stamping and drawing die

Abstract

The utility model discloses a stamping and drawing die, which relates to the technical field of stamping dies, and comprises an upper die and a lower die, and further comprises an ejection mechanism used for ejecting punched waste out of the upper die; the one-time forming mechanism comprises a punching head and a punching head and is used for being matched with the upper die to punch and form the hollow rivet and punch the hollow rivet; and the locking mechanism is used for locking the punching head in the process of punching and forming the hollow rivet by the punching head and the upper die. By arranging the one-time forming mechanism, the punching head and the punching head can work cooperatively, punching forming of the hollow rivet is completed, punching operation is carried out at the same time, the machining process is simplified, the transferring frequency of the hollow rivet is reduced, and therefore the machining precision and the product quality are improved; the locking mechanism can effectively lock the punching head in the process that the punching head and the upper die conduct punching forming on the hollow rivet, and the situation that the punching head pops up to punch the hollow rivet when the hollow rivet is punched and formed by the punching head and the upper die, and the quality of the hollow rivet is affected is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch -die technology field, concretely is a kind of punch drawing die. BACKGROUND

[0002] Punch drawing is to use die to exert pressure on material, so that it produces plastic deformation, thereby obtaining the parts of required shape and size. In the manufacturing process of hollow rivets, punch drawing is mainly used to form the shank and head of the rivet. In the process of processing hollow rivets, the existing punch drawing die has the problems of difficult automatic removal of waste materials, low efficiency caused by separation of hollow rivet forming and punching steps. These problems not only affect the use efficiency and processing accuracy of the die, but also may cause damage to the die, increasing production cost. SUMMARY

[0003] The utility model provides a kind of punch drawing die, with the advantage of high efficiency, to solve the problem of low efficiency caused by separation of hollow rivet forming and punching steps in prior art.

[0004] To achieve the purpose of high efficiency, the utility model provides the following technical scheme: a punch drawing die, comprising an upper die and a lower die, further comprising: an ejection mechanism arranged in the upper die for ejecting the waste material after punching out of the upper die; a primary forming mechanism arranged on the upper end surface of the lower die, comprising a punch head and a perforating head, for cooperating with the upper die to punch form hollow rivets and punch the hollow rivets; a locking mechanism arranged in the lower die for locking the perforating head during the process of punching the hollow rivets by the punch head and the upper die.

[0005] Preferably, the upper die comprises an upper die table and an upper die plate, and the lower end surface of the upper die table is provided with mounting columns at four corners, and the upper die plate is slidingly connected to the outer wall of the mounting columns, and the lower end surface of the upper die plate is provided with a groove for forming hollow rivets.

[0006] Preferably, the lower die comprises a lower die table and a lower die plate, and the upper end surface of the lower die table is provided with support columns at four corners, and the lower die plate is slidingly connected to the outer wall of the support columns.

[0007] Preferably, the punch head comprises a protrusion and a sliding plate, the sliding plate is slidingly connected to the outer wall of the support columns and located between the lower die table and the lower die plate, the protrusion is mounted on the upper end surface of the sliding plate, the lower die plate is provided with a through hole matching the protrusion, and the sliding plate is provided with first springs corresponding to the support columns at both ends, the first springs are sleeved on the outer wall of the support columns, and the other end is fixedly connected with the lower die table and the lower die plate respectively.

[0008] Preferably, the perforating head is installed on the upper end surface of the lower die base and is coaxial with the protrusion, the upper end surface of the protrusion is provided with a through hole, and the perforating head penetrates the slide plate and extends into the through hole.

[0009] Preferably, the locking mechanism comprises a sleeve, a push rod and fixed pins arranged symmetrically, the sleeve is symmetrically installed on the upper end surface of the lower die, the lower end surface of the slide plate is symmetrically provided with a plurality of rails, the fixed pins are slidably connected in the rails, the upper end surface of the slide plate is symmetrically provided with a through groove, the sleeve extends into the through groove, the outer wall of the sleeve is symmetrically provided with an opening, the fixed pins extend into the sleeve through the opening, the push rod is installed on the lower end surface of the lower die plate and corresponds to the sleeve, and the outer wall of the fixed pin is provided with a slope which cooperates with the push rod.

[0010] Preferably, the rails are each provided with a second spring, and the second spring is fixedly connected with the fixed pin and the rail respectively.

[0011] Preferably, the ejection mechanism comprises a mounting cylinder and a ejector pin, the mounting cylinder and the ejector pin are concentrically arranged on the lower end surface of the upper die base, the ejector pin is slidably connected in the mounting cylinder, the ejector pin penetrates the upper die and extends into the recess, the upper end surface of the ejector pin is provided with a third spring, and the other end of the third spring is fixedly connected with the mounting cylinder.

[0012] Compared with the prior art, the stamping and drawing die has the following beneficial effects:

[0013] The stamping and drawing die has the following beneficial effects:

[0014] By arranging the protrusion, the slide plate, the supporting column, the first spring, the through hole and the lower die plate, the hollow rivet can be pressed down after being placed on the lower die plate, the upper die can press the hollow rivet and the upper die plate together, and the hollow rivet can be formed on the outer wall of the protrusion.

[0015] By arranging the perforating head and the through hole, the perforating head can be arranged in the protrusion, the hollow rivet can be formed and then perforated after being pressed down, and the quality of the hollow rivet is ensured.

[0016] Through setting sleeve, push rod, fixed pin, opening and inclined surface, the fixed pin can be pushed out of the sleeve when the push rod is driven downward by the lower die plate, so that the slide plate is unlocked.

[0017] Through setting ejector pin and third spring, the waste material can be pushed out after the hollow rivet is punched by the piercing head. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the schematic diagram of external structure of the utility model;

[0019] Figure 2 It is the schematic diagram of lower die structure of the utility model;

[0020] Figure 3 It is the sectional view of lower die of the utility model;

[0021] Figure 4 It is the sectional view of locking mechanism of the utility model;

[0022] Figure 5 It is the schematic diagram of upper die structure of the utility model;

[0023] Figure 6 It is the sectional view of ejector mechanism of the utility model.

[0024] In the drawing: 1, upper die; 11, upper die table; 12, upper die plate; 13, mounting column; 14, recess; 2, lower die; 21, lower die table; 22, lower die plate; 221, through hole; 23, support column; 3, ejector mechanism; 31, mounting cylinder; 32, ejector pin; 33, third spring; 4, primary forming mechanism; 41, punching head; 411, protruding block; 412, slide plate; 413, first spring; 414, through hole; 415, track; 416, through slot; 417, second spring; 42, piercing head; 5, locking mechanism; 51, sleeve; 511, opening; 52, push rod; 53, fixed pin; 531, inclined surface; 6, hollow rivet. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model. Embodiment 1

[0026] Please refer to Figures 1-6The utility model discloses a kind of stamping stretch dies, including upper die 1 and lower die 2, further include: ejection mechanism 3, it is set in the upper die 1, for after punching waste is ejected upper die 1;Primary forming mechanism 4, it is arranged on the upper end surface of lower die 2, it includes stamping head 41 and perforating head 42, for cooperating upper die 1 stamping forming hollow rivet 6 and punch hollow rivet 6;Locking mechanism 5, it is arranged in lower die 2, for locking perforating head 42 in the process that stamping head 41 and upper die 1 stamping forming hollow rivet 6.

[0027] The above design is by setting primary forming mechanism 4, so that stamping head 41 and perforating head 42 can work cooperatively, complete stamping forming of hollow rivet 6 and punch simultaneously, simplify processing flow, reduce hollow rivet 6 transfer frequency, to improve processing precision and product quality, locking mechanism 5 can effectively lock perforating head 42 in the process that stamping head 41 and upper die 1 stamping forming hollow rivet 6, prevent it from being ejected when hollow rivet 6 is stamped forming by stamping head 41 and upper die 1 punch hollow rivet 6, influence hollow rivet 6 quality.

[0028] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 , the upper die 1 includes upper die platform 11 and upper die plate 12, the lower end surface of the upper die platform 11 four corners is equipped with mounting column 13, the upper die plate 12 is slidably connected in the outer wall of the mounting column 13, the lower end surface of the upper die plate 12 is equipped with recess 14 for hollow rivet 6 forming, the lower die 2 includes lower die platform 21 and lower die plate 22, the upper end surface of the lower die platform 21 four corners is respectively equipped with support column 23, the lower die plate 22 is slidably connected in the outer wall of the support column 23.

[0029] Please refer to Figures 1-4The punch head 41 comprises a protrusion 411 and a sliding plate 412, the sliding plate 412 is slidingly connected to the outer wall of the support column 23, located between the lower die table 21 and the lower die plate 22, the protrusion 411 is installed on the upper end surface of the sliding plate 412, the lower die plate 22 is provided with a through hole 221 matched with the protrusion 411, the upper and lower ends of the sliding plate 412 are provided with a first spring 413 corresponding to the support column 23, the first spring 413 is sleeved on the outer wall of the support column 23, and the other end is fixedly connected with the lower die table 21 and the lower die plate 22 respectively. By arranging the protrusion 411, the sliding plate 412, the support column 23, the first spring 413, the through hole 221 and the lower die plate 22, after the hollow rivet 6 is placed on the lower die plate 22, the upper die plate 12 is pressed down, so that the upper die 1 is pressed down together with the hollow rivet 6 and the upper die plate 12, and the hollow rivet 6 is formed by punching on the outer wall of the protrusion 411. The piercing head 42 is installed on the upper end surface of the lower die table 21 and is located on the same axis as the protrusion 411. The upper end surface of the protrusion 411 is provided with a through hole 414. The piercing head 42 penetrates the sliding plate 412 and extends into the through hole 221. By arranging the piercing head 42 and the through hole 414, the piercing head 42 is received in the protrusion 411, so that the hollow rivet 6 is first formed and then pierced after being pressed down, thereby ensuring the quality of the hollow rivet 6.

[0030] Please refer to Figures 1-4 The locking mechanism 5 comprises a sleeve 51, a push rod 52 and a fixed pin 53 arranged symmetrically. The sleeve 51 is symmetrically installed on the upper end surface of the lower die 2. The lower end surface of the sliding plate 412 is symmetrically provided with a plurality of rails 415. The fixed pin 53 is slidingly connected in the rail 415. The upper end surface of the sliding plate 412 is symmetrically provided with a through groove 416. The sleeve 51 extends into the through groove 416. The outer wall of the sleeve 51 is symmetrically provided with an opening 511. The fixed pin 53 extends into the sleeve 51 through the opening 511. The push rod 52 is installed on the lower end surface of the lower die plate 22 and corresponds to the sleeve 51. The outer wall of the fixed pin 53 is provided with an inclined surface 531 matched with the push rod 52. By arranging the sleeve 51, the push rod 52, the fixed pin 53, the opening 511 and the inclined surface 531, the fixed pin 53 can be clamped in the sleeve 51, thereby limiting the sliding of the sliding plate 412 and ensuring that the piercing head 42 will not leak out when the punching and forming is not completed. When the push rod 52 is driven downward by the lower die plate 22, the fixed pin 53 is pushed out of the sleeve 51, thereby unlocking the sliding plate 412. The rail 415 is provided with a second spring 417. The second spring 417 is fixedly connected with the fixed pin 53 and the rail 415 respectively. By arranging the second spring 417, the fixed pin 53 can be automatically pushed through the opening 511 and into the sleeve 51, thereby realizing the function of limiting the movement of the sliding plate 412. Embodiment 2

[0031] Based on the above embodiment one, please refer to Figure 1 、 Figure 5 、 Figure 6 , the ejection mechanism 3 includes installation cylinder 31 and ejector pin 32, the installation cylinder 31 and the ejector pin 32 are concentrically arranged at the lower end surface of the upper die table 11, the ejector pin 32 is slidingly connected in the installation cylinder 31, the ejector pin 32 penetrates the upper die 1 and extends into the recess 14, the upper end surface of the ejector pin 32 is provided with a third spring 33, the other end of the third spring 33 is fixedly connected with the installation cylinder 31, by arranging the ejector pin 32 and the third spring 33, the waste can be pushed out after the hollow rivet 6 is punched by the piercing head 42.

[0032] The working principle and use process of the utility model:

[0033] Before use, check the die, confirm that the stamping drawing die (including the upper die 1, the lower die 2, the ejection mechanism 3, the primary forming mechanism 4 and the locking mechanism 5) is intact, the parts are connected tightly, there is no looseness phenomenon, place the hollow rivet 6 to be processed on the lower die plate 22 of the lower die 2, ensure that the position of the hollow rivet 6 is correct and aligns with the forming groove of the die, then start the stamping equipment, the upper die 1 starts to press down, the upper die plate 12 slides down along with the installation column 13, until the upper die plate 12 contacts with the hollow rivet 6, primary forming and punching are completed, with the continuous pressing down of the upper die 1, the upper die plate 12 presses down the hollow rivet 6 and the lower die plate 22 together, the protrusion 411 in the stamping head 41 punches and forms the hollow rivet 6 through the through hole 221 of the lower die plate 22, continue to press down, the piercing head 42 extends from the penetration hole 414 of the protrusion 411 and punches the hollow rivet 6, with the pressing down of the upper die 1, the lower die plate 22 drives the push rod 52 to descend, the push rod 52 pushes the fixed pin 53 out of the sleeve 51 through the inclined surface 531, the sliding plate 412 is unlocked and can slide freely, with the downward movement of the sliding plate 412, the piercing head 42 punches the hollow rivet 6, when punching, the piercing head 42 lifts the ejector pin 32 upward, in the stamping process, the fixed pin 53 of the locking mechanism 5 is locked through the cooperation of the inclined surface 531 and the push rod 52, to prevent the piercing head 42 from leaking out before the stamping forming is completed, when the upper die 1 reaches the preset stamping depth, the stamping equipment stops pressing down, the upper die 1 starts to rise, at the same time, the first spring 413 and the second spring 417 drive the lower die plate 22 and the sliding plate 412 to reset respectively, to prepare for the next stamping, the ejector pin 32 of the ejection mechanism 3 pushes the waste after punching out of the forming groove under the action of the third spring 33, after the waste is pushed out, the formed hollow rivet 6 can be conveniently taken out.

Claims

1. A punch-draw die comprising an upper die (1) and a lower die (2), characterized in that, Also include: The ejection mechanism (3) is arranged in the upper die (1), for the waste after punching out of the upper die (1); One forming mechanism (4) is arranged in the upper end surface of the lower die (2), which includes a punch head (41) and a perforating head (42), which is used for cooperating with the upper die (1) to punch the hollow rivet (6) and punch the hollow rivet (6); Locking mechanism (5) is arranged in the lower die (2), for locking the perforating head (42) in the process of punch head (41) and upper die (1) punch forming hollow rivet (6).

2. A draw stamping die according to claim 1, wherein: The upper die (1) includes an upper die (11) and an upper die (12), the lower end surface of the upper die (11) is provided with mounting column (13) in four corners, the upper die (12) is connected with the outer wall of the mounting column (13) by sliding, the lower end surface of the upper die (12) is provided with recess (14) for hollow rivet (6) forming.

3. A draw stamping die as defined in claim 1 wherein: The lower die (2) includes a lower die (21) and a lower die (22), the upper end surface of the lower die (21) is provided with support column (23) in four corners, respectively, the lower die (22) is connected with the outer wall of the support column (23) by sliding.

4. A draw stamping die according to claim 3, wherein: The punch head (41) includes a protrusion (411) and a slide plate (412), the slide plate (412) is connected with the outer wall of the support column (23) by sliding, located between the lower die (21) and the lower die (22), the protrusion (411) is installed on the upper end surface of the slide plate (412), the lower die (22) is provided with through hole (221) matched with the protrusion (411), the slide plate (412) is provided with first spring (413) corresponding to the support column (23) at both ends, the first spring (413) is sleeved on the outer wall of the support column (23), and the other end is fixedly connected with the lower die (21) and the lower die (22), respectively.

5. A draw-and-iron die as defined in claim 4, wherein: The perforating head (42) is installed on the upper end surface of the lower die (21) and is located on the same axis with the protrusion (411), the upper end surface of the protrusion (411) is provided with through hole (414), the perforating head (42) penetrates the slide plate (412) and extends into the through hole (221).

6. A draw-and-iron die as defined in claim 4, wherein: The locking mechanism (5) comprises a sleeve (51), a push rod (52) and symmetrical fixing pins (53), the sleeve (51) is symmetrically installed on the upper end surface of the lower mold (2), the lower end surface of the slide plate (412) is symmetrically provided with a plurality of rails (415), the fixing pin (53) is slidingly connected in the rail (415), the upper end surface of the slide plate (412) is symmetrically provided with a through groove (416), the sleeve (51) extends into the through groove (416), the outer wall of the sleeve (51) is symmetrically provided with an opening (511), the fixing pin (53) extends into the sleeve (51) through the opening (511), the push rod (52) is installed on the lower end surface of the lower mold plate (22) and corresponds to the sleeve (51), and the outer wall of the fixing pin (53) is provided with a slope (531) which cooperates with the push rod (52).

7. A draw stamping die according to claim 6, wherein: Second springs (417) are arranged in the rails (415), and the second springs (417) are fixedly connected with the fixing pins (53) and the rails (415) respectively.

8. A draw stamping die as defined in claim 2 wherein: The ejection mechanism (3) comprises a mounting cylinder (31) and a ejector pin (32), the mounting cylinder (31) and the ejector pin (32) are concentrically arranged on the lower end surface of the upper mold table (11), the ejector pin (32) is slidingly connected in the mounting cylinder (31), the ejector pin (32) extends through the upper mold (1) and extends into the groove (14), a third spring (33) is installed on the upper end surface of the ejector pin (32), and the other end of the third spring (33) is fixedly connected with the mounting cylinder (31).

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