CN220461768U - Boss drawing die - Google Patents

Abstract

The utility model discloses a boss drawing die, which relates to the technical field of steel tube forming drawing and comprises a fixed die and a movable die, wherein the movable die is driven by an external press to lift and lower by an external press, in the prior art, a clamping piece is arranged between the fixed die and the movable die and used for clamping a steel tube, the movable die provides clamping force for the clamping piece, a moving piece is arranged between the fixed die and the movable die and is provided with a drawing piece, the moving piece is used for driving the drawing piece to lift and the movable die provides moving force for the moving piece, the boss drawing die is lifted and lowered by the movable die, so that the drawing piece on the moving piece is driven to descend to draw the steel tube, and a second elastic supporting piece in the moving piece is recovered by the elasticity of the second elastic supporting piece after the movable die ascends, so that the moving piece is recovered to perform the next drawing process without additional electric equipment to drive the moving piece to move, and the production cost of equipment is reduced.

Description

Boss drawing die

Technical Field

The utility model relates to the technical field of steel tube forming and drawing, in particular to a boss drawing die.

Background

Drawing is a plastic working method in which a metal blank is deformed through a die hole of a drawing die. In the drawing process, the blank generates plastic deformation in the drawing die, and after passing through the drawing die, the section shape and the dimension of the blank are the same as those of the outlet of a die hole of the drawing die. Therefore, the shape and the size of the drawing die holes are changed, and the corresponding drawing formed product can be obtained.

When a steel pipe assembly part of an automobile damping system is punched and drawn at one end of a steel pipe, in order to form the pipe fitting product, the drawing after punching of the steel pipe is performed at present on the basis of adopting a fixed die and a movable die, and other drives are additionally adopted to drive a drawing part to perform drawing and forming of the steel pipe, so that a certain equipment production cost is increased.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model provides a boss drawing die.

The utility model provides a boss drawing die which comprises a fixed die and a movable die, wherein the movable die is driven by an external press to lift and fall, in the prior art, a clamping piece is arranged between the fixed die and the movable die and used for clamping a steel pipe, the movable die provides clamping force for the clamping piece, a moving piece is arranged between the fixed die and the movable die, a drawing piece is arranged on the moving piece and used for driving the drawing piece to lift and fall, and the movable die provides moving force for the moving piece.

Preferably, the clamping piece comprises an upper clamping die and a lower clamping die, the lower clamping die is arranged on the fixed die, arc-shaped grooves are formed in one sides, close to each other, of the upper clamping die and the lower clamping die, a plurality of positioning rods are arranged between the upper clamping die and the movable die, a plurality of positioning grooves matched with the positioning rods are formed in the upper clamping die and the movable die, two ends of the positioning rods respectively enter the positioning grooves, the positioning grooves penetrate through the upper clamping die or the movable die, limiting blocks are arranged on the positioning rods to prevent the positioning rods from sliding out of the positioning grooves, and first elastic supporting pieces are arranged on the upper clamping die.

Preferably, a plurality of cushion blocks are arranged on the upper clamping die.

Preferably, the number of the cushion blocks is preferably two, the cushion blocks are symmetrically distributed at the top of the upper clamping die, and the distance between the top of the cushion block and the upper clamping die is smaller than the distance between the top of the first elastic supporting piece and the upper clamping die, so that the maximum descending distance of the movable die is limited.

Preferably, the moving part comprises a positioning seat fixing block, the positioning seat fixing block is arranged on the fixed die, a through groove is formed in the positioning seat fixing block, a fixing seat is arranged in the through groove and slides in the through groove, the distance between one side of the fixed seat, which is far away from the fixed die, and the fixed die is smaller than the distance between one side of the fixed seat, which is far away from the first elastic support part, and the fixed die is far away from the fixed seat, the fixing seat extends to the upper part of the through groove, a plurality of ejector rods are arranged on one side, which is near the fixed die, of the fixed seat, one end, which is far away from the fixed seat, of the ejector rods penetrates through the fixed die and extends to the outside of the fixed die, a plurality of the ejector rods are arranged on one end, which is far away from the fixed seat, of the ejector rods is arranged on the first backing plate, a second backing plate is arranged on one side, which is far away from the ejector rods, of the second backing plate is arranged on one side, which is far away from the first backing plate, of the second backing plate is provided with a fixing bolt, and one end, which is near the fixed die, penetrates through the second backing plate, the second elastic support part, the second backing plate and the first elastic support part and the first backing plate are sequentially arranged on one end, which is far away from the fixing bolt.

Therefore, when the fixing seat moves downwards, the ejector rod is driven to move downwards, the first base plate is not connected with the fixed die, and therefore the ejector rod moves downwards to drive the first base plate to move downwards, the second elastic supporting piece is in a compressed state, and the position of the second base plate is unchanged due to the fixing effect of the fixing bolt.

Preferably, the first elastic support and the second elastic support are both made of polyester material.

Preferably, the drawing piece comprises a mandrel, the mandrel is arranged on the fixing seat, a plurality of punches are detachably arranged on the mandrel, and a plurality of positions of one steel pipe can be punched.

Preferably, the punch and the mandrel are fastened through bolts.

Preferably, a punching groove matched with the punch is formed in the lower clamping die.

Preferably, an upper clamping block is installed on the mandrel, a lower clamping block is installed on the fixed die, in order to give out the drawing, the upper clamping block is used for supporting the mandrel to prevent the mandrel from tilting due to uneven stress, the mandrel on the fixing seat moves downwards together, the punch moves downwards under the driving of the mandrel to finish the drawing forming process, and at the moment, the lower clamping block on the fixed die is attached to the upper clamping block, and the setting can be used for reducing the bearing force of the mandrel due to the fact that the length of the mandrel is longer.

Preferably, a buffer member is arranged between the fixed die and the movable die.

Preferably, the buffer member comprises a plurality of sleeves, the sleeves are arranged on the fixed die, one ends of the sleeves close to the fixed die penetrate through the fixed die, a plurality of inserting rods are arranged on the fixed die, one ends of the inserting rods, far away from the fixed die, extend into the sleeves, and springs are sleeved on the inserting rods.

Preferably, two support plates are mounted on one side of the fixed die, which is far away from the movable die, and the two support plates are used for supporting the fixed die.

1. According to the boss drawing die, the moving part is driven to descend through the descending of the moving die, so that the drawing part on the moving part is driven to descend to draw the steel pipe, and the second elastic supporting part in the moving part is restored by the elasticity of the second elastic supporting part after the moving die ascends, so that the moving part is restored to the original position to perform the next drawing process, additional electric equipment is not needed to drive the moving part to move, and the production cost of equipment is reduced.

2. According to the boss drawing die, the upper clamping die is driven to descend through the moving die in the clamping piece to clamp the steel pipe in cooperation with the lower clamping die, the first elastic supporting piece is compressed after the moving die descends by a certain amplitude, the upper clamping die is not damaged due to buffering of the first elastic supporting piece, clamping is achieved, additional electric equipment is not required to drive, and only the moving die is required to cooperate, so that the production cost of equipment is further reduced.

3. According to the boss drawing die, the pressure of the movable die to the clamping piece and the moving piece is buffered through the arrangement of the buffer piece, so that damage of the movable die to the clamping piece and the moving piece is reduced, and the practical service lives of the clamping piece and the moving piece are prolonged.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a perspective view of the structure of the present utility model;

FIG. 2 is a schematic side view of the structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of the structure of the present utility model;

fig. 4 is a schematic view of a steel pipe after drawing.

In the figure, 1, a fixed mold; 2. a movable mold; 3. a clamping member; 31. an upper clamping die; 32. a lower clamping die; 33. a positioning rod; 34. a first elastic support; 35. a cushion block; 4. a moving member; 41. a positioning seat fixing block; 42. a fixing seat; 43. a push rod; 44. a first backing plate; 45. a second backing plate; 46. a second elastic support; 47. a fixing bolt; 5. a drawing member; 51. a mandrel; 52. a punch; 6. a buffer member; 61. a sleeve; 62. a rod; 63. a spring; 7. and a support plate.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The boss drawing die comprises a fixed die 1 and a movable die 2, wherein the movable die 2 is driven to lift by an external press, the boss drawing die is in the prior art, a clamping piece 3 is arranged between the fixed die 1 and the movable die 2, the clamping piece 3 is used for clamping a steel pipe, the movable die 2 provides clamping force for the clamping piece 3, a moving piece 4 is arranged between the fixed die 1 and the movable die 2, a drawing piece 5 is arranged on the moving piece 4, the moving piece 4 is used for driving the drawing piece 5 to lift, the movable die 2 provides moving force for the moving piece 4, two supporting plates 7 are arranged on one side, far away from the movable die 2, of the fixed die 1, and the two supporting plates 7 are used for supporting the fixed die 1.

Further, the clamping piece 3 comprises an upper clamping die 31 and a lower clamping die 32, the lower clamping die 32 is mounted on the fixed die 1, arc grooves are formed in one sides, close to each other, of the upper clamping die 31 and the lower clamping die 32, a plurality of positioning rods 33 are arranged between the upper clamping die 31 and the movable die 2, a plurality of positioning grooves matched with the positioning rods 33 are formed in the upper clamping die 31 and the movable die 2, two ends of the positioning rods 33 respectively enter the positioning grooves, the positioning grooves penetrate through the upper clamping die 31 or the movable die 2, limiting blocks are arranged on the positioning rods 33, the positioning rods 33 are prevented from sliding out from the positioning grooves, and first elastic supporting pieces 34 are mounted on the upper clamping die 31.

Further, a plurality of cushion blocks 35 are installed on the upper clamping die 31.

Specifically, the number of the cushion blocks 35 is preferably two, the cushion blocks are symmetrically distributed at the top of the upper clamping die 31, and the distance between the top of the cushion block 35 and the upper clamping die 31 is smaller than the distance between the top of the first elastic supporting piece 34 and the upper clamping die 31, so that the maximum descending distance of the movable die 2 is limited.

According to the boss drawing die, in the clamping piece 3, the upper clamping die 31 is driven to descend through the movable die 2, the steel pipe is clamped by being matched with the lower clamping die 32, the movable die 2 descends by a certain amplitude to compress the first elastic supporting piece 34, the upper clamping die 31 cannot be damaged due to buffering of the first elastic supporting piece 34, additional electric equipment is not required to drive while clamping is achieved, only the movable die 2 is matched, and the production cost of equipment is further reduced.

Further, the moving member 4 includes a positioning seat fixing block 41, the positioning seat fixing block 41 is installed on the fixed mold 1, a through groove is formed in the positioning seat fixing block 41, a fixing seat 42 is arranged in the through groove, the fixing seat 42 slides in the through groove, a distance between one side of the fixing seat 42 far away from the fixed mold 1 and the fixed mold 1 is smaller than a distance between one side of the fixing seat 42 far away from the fixed mold 1 and the fixed mold 1 with the first elastic supporting piece 34, one side of the fixing seat 42 far away from the fixed mold 1 extends to an upper side of the through groove, a plurality of ejector rods 43 are installed on one side of the fixing seat 42 near the fixed mold 1, one end of the ejector rods 43 far away from the fixing seat 42 penetrates through the fixed mold 1 and extends to the outside of the fixed mold 1, a plurality of ejector rods 43 far away from one end of the fixing seat 42 is provided with a first backing plate 44, one end of the ejector rods 43 far away from the fixing seat 42 is installed on the first backing plate 44, one side of the first backing plate 44 far away from the ejector rods 43 is provided with a second backing plate 45, a second elastic supporting piece 46 is installed between the second backing plate 45 and the first backing plate 44, one side of the first backing plate 45 far away from the first backing plate 45 is installed on the first backing plate 45 far away from the first backing plate 47, and the first backing plate 45 is far away from the first backing plate 47 is installed on the first backing plate 47 and penetrates through the first backing plate 47. Therefore, when the fixing seat 42 moves downward, the ejector rod 43 is driven to move downward, and the first cushion plate 44 is not connected with the fixed mold 1, so that the ejector rod 43 moves downward to drive the first cushion plate 44 to move downward, so that the second elastic supporting piece 46 is in a compressed state, and the position of the second cushion plate 45 is unchanged due to the fixing effect of the fixing bolt 47.

Further, the first elastic support 34 and the second elastic support 46 are made of polyester materials.

Further, the drawing member 5 includes a mandrel 51, the mandrel 51 is mounted on the fixing base 42, and a plurality of punches 52 are detachably mounted on the mandrel 51, so that a plurality of positions of a steel pipe can be punched.

Further, the punch 52 and the mandrel 51 are fastened by bolts.

Further, the lower clamping die 32 is provided with a punching groove matched with the punch 52.

Further, an upper clamping block is installed on the mandrel 51, a lower clamping block is installed on the fixed die 1, in order to give out the figure, the upper clamping block is used for supporting the mandrel 51 to prevent the mandrel 51 from tilting due to uneven stress, the mandrel 51 on the fixing seat 42 moves downwards together with the downward movement, the punch 52 moves downwards under the driving of the mandrel 51 to complete the drawing forming process, at the moment, the lower clamping block on the fixed die 1 is attached to the upper clamping block, and the setting can be used for reducing the bearing force of the mandrel 51 due to the fact that the length of the mandrel 51 is longer.

The boss drawing die provided drives the moving part 4 to descend through the descending of the moving die 2, so that the drawing part 5 on the moving part 4 is driven to descend to draw the steel pipe, and the second elastic supporting part 46 in the moving part 4 is recovered by the elasticity of the second elastic supporting part after the moving die 2 ascends, so that the moving part 4 is recovered to the original position, the next drawing process is carried out, additional electric equipment is not needed to drive the moving part 4 to move, and the production cost of equipment is reduced.

Further, a buffer member 6 is provided between the fixed die 1 and the movable die 2.

Specifically, the buffer member 6 includes a plurality of sleeves 61, the sleeves 61 are installed on the fixed mold 1, one end of each sleeve 61 close to the fixed mold 1 penetrates through the fixed mold 1, a plurality of inserting rods 62 are installed on the fixed mold 1, one end, far away from the fixed mold 1, of each inserting rod 62 extends into each sleeve 61, and springs 63 are sleeved on the inserting rods 62.

According to the boss drawing die, the pressure of the movable die 2 to the clamping piece 3 and the moving piece 4 is buffered through the arrangement of the buffer piece 6, the damage of the movable die 2 to the clamping piece 3 and the moving piece 4 is reduced, and the practical service lives of the clamping piece 3 and the moving piece 4 are prolonged.

The embodiment is in the working process:

when the steel pipe clamping device works, firstly, a steel pipe is sleeved on the mandrel 51, the movable mould 2 is pressed towards the first elastic supporting piece 34 under the pressure of a press, the upper clamping mould 31 is pressed on the lower clamping mould 32 under the action of the first elastic supporting piece 34, the steel pipe is clamped by matching with the lower clamping mould 32, and the movable mould 2 descends by a certain amplitude to compress the first elastic supporting piece 34, and the upper clamping mould 31 is prevented from being damaged due to the buffering of the first elastic supporting piece 34;

after the clamping process is finished, the movable die 2 is contacted with the fixed seat 42, the fixed seat 42 is driven to descend, the fixed seat 42 descends, the ejector rod 43 is driven to continuously press the first base plate 44, the first base plate 44 extrudes the second elastic support 46, the fixed seat 42 descends, the mandrel 51 and the punch 52 are driven to descend, the position of the steel pipe clamped by the clamping piece 3 is unchanged, the punch 52 descends to realize drawing of the steel pipe from inside to outside after punching, the movable die 2 stops descending after the cushion block 35 is touched, at the moment, the drawing process is finished, after the movable die 2 ascends to restore to the original position, the fixed seat 42 drives the mandrel 51 to restore to the original position under the action of the second elastic support 46, and the first elastic support 34 also restores to the original position.

Due to the detachable design of the punch 52, the steel pipe can be drawn for the second time, so that the production quality of drawing after punching the steel pipe is improved, and the punch 52 with larger size is replaced during the second drawing, so that the drawn steel pipe is replaced by the fine drawing during the second drawing from the rough drawing during the first drawing, and the production quality is improved.

The tube after drawing can be referred to fig. 4.

And all that is not described in detail in this specification is well known to those skilled in the art.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (10)

1. The utility model provides a boss drawing die, includes cover half (1) and movable mould (2), its characterized in that, be equipped with clamping piece (3) between cover half (1) and movable mould (2), and clamping piece (3) are used for the centre gripping steel pipe, movable mould (2) provide the power of centre gripping for clamping piece (3), be equipped with moving part (4) between cover half (1) and movable mould (2), and be equipped with on moving part (4) and draw piece (5), moving part (4) are used for driving and draw piece (5) to go up and down, and movable mould (2) provide the power of removal for moving part (4).

2. The boss drawing die according to claim 1, wherein the clamping piece (3) comprises an upper clamping die (31) and a lower clamping die (32), the lower clamping die (32) is mounted on the fixed die (1), arc-shaped grooves are formed in one sides, close to each other, of the upper clamping die (31) and the lower clamping die (32), a plurality of positioning rods (33) are arranged between the upper clamping die (31) and the movable die (2), and a first elastic supporting piece (34) is mounted on the upper clamping die (31).

3. Boss drawing die according to claim 2, characterized in that the upper clamping die (31) is fitted with several pads (35).

4. A boss drawing die according to claim 3, wherein the distance between the side of the spacer block (35) remote from the upper clamping die (31) and the upper clamping die (31) is smaller than the distance between the side of the first elastic support member (34) remote from the upper clamping die (31) and the upper clamping die (31).

5. The boss drawing die according to any one of claims 1 to 4, wherein the moving member (4) comprises a positioning seat fixing block (41), the positioning seat fixing block (41) is installed on the fixed die (1), a through groove is formed in the positioning seat fixing block (41), a fixing seat (42) is arranged in the through groove, one side of the fixing seat (42) far away from the fixed die (1) extends to the upper side of the through groove, a plurality of ejector rods (43) are installed on one side of the fixing seat (42) near the fixed die (1), one end of each ejector rod (43) far away from the fixing seat (42) penetrates through the fixed die (1) and extends to the outside of the fixed die (1), one end of each ejector rod (43) far away from the fixing seat (42) is provided with a first base plate (44), one end of each ejector rod (43) far away from the fixing seat (42) is installed on the first base plate (44), one side of each first base plate (44) far away from the fixing seat (43) is provided with a second base plate (45), one side of each second base plate (45) far away from the fixed die (45) is installed between the second base plate (45) and the first base plate (44) near the first base plate (45), one side of each second base plate (45) is installed near the first base plate (45), and the first base plate (45) is far away from the first base plate (47) and the first base plate (47) is sequentially The second elastic supporting piece (46) and the first backing plate (44) are arranged on the fixed die (1).

6. The boss drawing die according to claim 5, wherein a distance between a side of the fixing base (42) away from the fixed die (1) and the fixed die (1) is smaller than a distance between a side of the first elastic support member (34) away from the fixed die (1) and the fixed die (1).

7. Boss drawing die according to claim 1, characterized in that the drawing member (5) comprises a mandrel (51), the mandrel (51) being mounted on the fixed seat (42), a number of punches (52) being removably mounted on the mandrel (51).

8. Boss drawing die according to claim 1, characterized in that a buffer (6) is arranged between the stationary die (1) and the movable die (2).

9. The boss drawing die according to claim 8, wherein the buffer member (6) comprises a plurality of sleeves (61), the sleeves (61) are mounted on the fixed die (1), one end of each sleeve (61) close to the fixed die (1) penetrates through the fixed die (1), a plurality of inserting rods (62) are mounted on the fixed die (1), one end, away from the fixed die (1), of each inserting rod (62) extends into each sleeve (61), and springs (63) are sleeved on the inserting rods (62).

10. Boss drawing die according to claim 1, characterized in that two support plates (7) are mounted on the side of the stationary die (1) facing away from the moving die (2), two support plates (7) being used for supporting the stationary die (1).