CN218425169U

CN218425169U - Stamping die of circular bush

Info

Publication number: CN218425169U
Application number: CN202222758811.0U
Authority: CN
Inventors: 俞海平; 姜良刚; 姜峰; 张哲元
Original assignee: NINGBO WOTE AUTO PARTS CO Ltd
Current assignee: NINGBO WOTE AUTO PARTS CO Ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-02-03
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a stamping die of circular bush, include: the upper die assembly is provided with a male die; the lower die assembly is movably arranged below the upper die assembly and reciprocates relative to the upper die assembly towards the direction close to or far away from the upper die assembly, and a female die is arranged on the lower die assembly; the free end of the positioning rod is matched with the inner hole of the stamping part; and the ejecting piece block is sleeved on the periphery of the positioning rod, and the male die, the female die, the positioning rod and the ejecting piece block are enclosed to form a cavity. The utility model provides a can direct forming go out stamping die of the circular bush that has flange end stamping workpiece.

Description

Stamping die of circular bush

Technical Field

The utility model relates to a stamping die technical field, more specifically say, relate to a stamping die of circular bush.

Background

The forming process of the circular bushing generally adopts thin sheets to be processed into a circular shape, and then the bushing structure is formed through the working procedures of stretching, forming, punching and the like. The finished bushing formed by the process is easy to mark the surface or cause defects due to local thinning of materials caused by stretching of a thin material sheet. Therefore, the Chinese invention patent with the publication number CN 106475504A discloses a one-step forming process for cold heading a holed I-shaped product by using a half die, which adopts the following process steps to form: A. cutting the bar material by a cutting knife; B. shaping; C. stretching an inner hole; D. preforming a flange; E. forming a flange at one end; F. removing waste materials; G. and forming the other end flange through a half die. The molding step has high production efficiency, and the number of produced products can reach 60-300/min; the material utilization rate is high, generally 85-100%.

On the basis of the patent scheme, I further improve the process. The structure of the workpiece to be machined in fig. 1 is formed directly by cutting a bar and cold heading and drawing an inner hole, and then a stamping part with a flange end in fig. 2 is directly formed by a stamping die, so that the steps of steps D and E in the above patent scheme are simplified.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides a can direct forming go out stamping die of the circular bush that has flange end stamping workpiece.

The utility model adopts the technical proposal that: provided is a press die for a circular bush, including:

the upper die assembly is provided with a male die;

the lower die assembly is movably arranged below the upper die assembly and reciprocates relative to the upper die assembly towards the direction close to or far away from the upper die assembly, and a female die is arranged on the lower die assembly;

the free end of the positioning rod is matched with the inner hole of the stamping part;

and the ejecting piece block is sleeved on the periphery of the positioning rod, and the male die, the female die, the positioning rod and the ejecting piece block are enclosed to form a cavity.

The utility model discloses in will treat that the machined part directly processes out the stamping workpiece that has the flange end by the shaping of rod to this reduces the process of processing, increases production efficiency. In the structure, the male die, the female die, the positioning rod and the top piece block form a cavity matched with the stamping piece through the die assembly of the upper die assembly and the lower die assembly. Wherein, the die cavity directly forms the flange end with the blind hole at the head of the workpiece to be processed.

According to an embodiment of the present invention, a flange forming portion is formed on a surface of the female die facing to one side of the male die, and a cavity formed by the flange forming portion and the male die in a surrounding manner is adapted to a flange end of the stamping part; and the head of the workpiece to be machined is deformed by the punching force and is filled into the cavity, and the flange end of the punching part is formed in sequence.

According to an embodiment of the present invention, the surface of the male die facing the female die is formed with a convex portion protruding outwards, and the convex portion is used for forming a blind hole on the flange end; when the die is closed, the convex part firstly forms a blind hole structure on the head of the workpiece to be machined, and then the head of the workpiece to be machined extends and is filled into the cavity to form a complete flange end.

According to an embodiment of the present invention, a side of the female die away from the flange forming portion is recessed inward to form a movable groove, the movable groove is communicated with the flange forming portion through a through hole, and the ejector block is slidably engaged with the through hole in a limiting manner; the ejecting block can slide along the inner wall of the through hole in a reciprocating mode, the ejecting block abuts against the lower end edge of the inner hole of the stamping part, and the formed stamping part is ejected through the movement of the ejecting block.

According to an embodiment of the present invention, a top plate is slidably mounted in a cavity formed by the lower mold assembly and the movable groove, the top plate is fixedly connected with the top piece block, and the positioning rod is slidably matched with the top plate; the top plate can reciprocate along the inner wall of the movable groove and is used for driving the ejecting piece block to advance or retreat.

According to an embodiment of the present invention, the device further comprises a supporting plate, wherein the supporting plate is fixedly connected with the top plate through a connecting rod penetrating through the lower die assembly; the layer board is used for external power supply, and the power supply passes through the layer board and drives the roof and remove, and the roof drives the piece removal again and is used for the blanking.

According to the utility model discloses an embodiment, go up and install a plurality of guide pin bushings on the mould subassembly, down install on the mould subassembly with the guide pillar of guide pin bushing adaptation.

According to the utility model discloses an embodiment, a ladder groove structure is constituteed with the through-hole to the activity groove.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a half-sectional view of a workpiece to be machined according to the prior art;

fig. 2 is a schematic structural view of the stamped stamping part in the embodiment of the present invention;

FIG. 3 is a perspective view of the stamped stamping part according to the embodiment of the present invention;

fig. 4 is a partial exploded view of the stamping die according to the embodiment of the present invention;

FIG. 5 is a cross-sectional plan view of the stamping die of FIG. 4;

fig. 6 is a perspective view of the stamping die in the embodiment of the present invention when the stamping die is assembled;

fig. 7 is a cross-sectional view of the embodiment of the present invention when the stamping die is assembled;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

FIG. 9 is a cross-sectional view of the stamping die during discharging in an embodiment of the present invention;

fig. 10 is a sectional plan view of the female die in the embodiment of the present invention.

The reference numbers in the figures illustrate:

1. stamping parts; 2. an upper die assembly; 3. a male die; 4. a lower die assembly; 5. a female die; 6. a guide sleeve; 7. a guide post; 8. a support plate; 9. a connecting rod; 10. a top plate; 11. positioning a rod; 12. a jacking block;

1a, an inner hole; 1b, flange end; 1c, blind holes;

3a, a convex part;

5a, a flange forming part; 5b, through holes; 5c, a movable groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 4, the present embodiment provides a punching die of a circular bush, including:

the upper die component 2 is provided with a male die 3;

the lower die assembly 4 is movably arranged below the upper die assembly 2 and reciprocates relative to the upper die assembly 2 towards the direction close to or far away from the upper die assembly 2, and a female die 5 is arranged on the lower die assembly 4;

the free end of the positioning rod 11 is matched with the inner hole 1a of the stamping part 1;

and the ejecting piece block 12 is sleeved on the periphery of the positioning rod 11, and the male die 3, the female die 5, the positioning rod 11 and the ejecting piece block 12 enclose to form a cavity.

As shown in fig. 2 and 3, the lower part of the punch 1 is cylindrical, and the cylindrical interior has a coaxially disposed bore 1a. The upper portion of stamping workpiece 1 is equipped with flange end 1b, and the sunken blind hole 1c that is formed with in the center of flange end 1b, and blind hole 1c and hole 1a coaxial arrangement and not intercommunication. The next step in the production is to further process the stamping part 1, so that the blind hole 1c is communicated with the inner hole 1a to form a circular bushing finished product.

Further, referring to fig. 5, in the present embodiment, a punch 3 is mounted to a lower end of the upper mold assembly 2, and a die 5 corresponding to the punch 3 is mounted to an upper end of the lower mold assembly 4. The positioning rod 11 is fixedly arranged on the lower die assembly 4, and during feeding, the inner hole 1a on the workpiece to be processed is matched with the free end of the positioning rod 11, so that the purpose of positioning is achieved.

Further, the top piece block 12 is of a circular bushing structure, an inner hole 1a of the top piece block is slidably matched with the positioning rod 11, and a flange end 1b of the top piece block 12 is used for connecting the top plate 10.

Specifically, as shown in fig. 6 to 8, a flange forming portion 5a is formed on a surface of the female die 5, which faces to one side of the male die 3, in a recessed manner, and a cavity formed by the flange forming portion 5a and the male die 3 in a surrounding manner is adapted to the flange end 1b of the stamping part 1.

Further, the surface of the female die 5 is parallel to the surface of the male die 3, the central area of the female die 5 is sunken to form a flange forming part 5a, and a head part formed by cold heading of a workpiece to be machined is filled into a cavity through stamping and extending to form a flange end 1b.

Specifically, the surface of the male die 3 facing the female die 5 is protruded outwards to form a protrusion 3a, and the protrusion 3a is used for forming the blind hole 1c on the flange end 1b.

Further, the head of the workpiece to be machined is firstly molded into a blind hole 1c structure by the convex part 3a during die assembly, and then the head of the workpiece to be machined extends and fills the cavity to form a complete flange end 1b.

Specifically, as shown in fig. 10, a movable groove 5c is formed in the concave die 5, which is recessed inward from the flange forming portion 5a, the movable groove 5c is communicated with the flange forming portion 5a through hole 5b, and the ejector block 12 is slidably in limit fit with the through hole 5 b.

Furthermore, the movable groove 5c and the through hole 5b form a stepped groove structure, that is, the movable groove 5c and the through hole 5b are coaxially arranged, and the inner diameter of the movable groove 5c is larger than that of the through hole 5 b. The ejecting block 12 can slide along the inner wall of the through hole 5b in a reciprocating manner, the ejecting block 12 abuts against the lower end edge of the inner hole 1a of the stamping part 1, and the formed stamping part 1 is ejected through the movement of the ejecting block 12.

Further, through-hole 5b, locating lever 11 and kicking block 12 constitute jointly and treat the cylindrical structure of machined part lower part, wherein the upper end of kicking block 12 with treat that machined part hole 1a border offsets, through-hole 5b with treat that cylindrical structure adaptation on the machined part.

Specifically, a top plate 10 is slidably mounted in a cavity formed by the lower die assembly 4 and the movable groove 5c, the top plate 10 is fixedly connected with the top piece block 12, and the positioning rod 11 is slidably matched with the top plate 10.

Further, the female die 5 is fixedly installed on the lower die assembly 4 so that the lower die assembly 4 seals the lower end opening of the movable groove 5 c. The top plate 10 is movably installed in the sealed space and can reciprocate along the inner wall of the movable groove 5c to drive the top piece block 12 to advance or retreat.

Specifically, the stamping die further comprises a supporting plate 8, and the supporting plate 8 is fixedly connected with the top plate 10 through a connecting rod 9 penetrating through the lower die assembly 4.

Further, in this embodiment, layer board 8 sets up in the below of lower mould subassembly 4, and layer board 8 is used for external power supply, and the power supply passes through layer board 8 and drives roof 10 and remove, and roof 10 drives a piece 12 removal again and is used for the blanking.

Specifically, a plurality of guide sleeves 6 are mounted on the upper die assembly 2, and guide posts 7 matched with the guide sleeves 6 are mounted on the lower die assembly 4.

Further, as shown in fig. 9, four guide sleeves 6 are fixedly installed at the lower end of the upper mold assembly 2, four guide posts 7 are correspondingly installed on the lower mold assembly 4, and the guide posts 7 are slidably engaged with the guide sleeves 6.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A stamping die for a circular bushing, comprising:

the upper die component (2), the male die (3) is arranged on the upper die component (2);

the lower die component (4) is movably arranged below the upper die component (2) and reciprocates relative to the upper die component (2) in a direction close to or far away from the upper die component, and a female die (5) is arranged on the lower die component (4);

the free end of the positioning rod (11) is matched with an inner hole (1 a) of the stamping part (1);

and the ejecting piece block (12) is sleeved on the periphery of the positioning rod (11), and the male die (3), the female die (5), the positioning rod (11) and the ejecting piece block (12) are enclosed to form a cavity.

2. The punching die for the circular bush according to claim 1, wherein: die (5) orientation the surface of terrace die (3) one side is sunken to be formed with flange shaping portion (5 a), flange shaping portion (5 a) with terrace die (3) enclose the cavity that closes and form with flange end (1 b) adaptation of stamping workpiece (1).

3. The punching die for the circular bush according to claim 2, wherein: the surface of the male die (3) facing one side of the female die (5) is outwards protruded to form a protruding part (3 a), and the protruding part (3 a) is used for forming a blind hole (1 c) in the flange end (1 b).

4. A press die for a circular bush according to claim 3, wherein: die (5) are kept away from one side of flange shaping portion (5 a) is inwards sunken to be formed with activity groove (5 c), activity groove (5 c) through a through-hole (5 b) with flange shaping portion (5 a) intercommunication, kicking block (12) with through-hole (5 b) slidable spacing cooperation.

5. The punching die for the circular bush according to claim 4, wherein: the lower die assembly (4) and the movable groove (5 c) are enclosed to form a cavity, a top plate (10) is slidably arranged in the cavity, the top plate (10) is fixedly connected with the top piece block (12), and the positioning rod (11) is slidably matched with the top plate (10).

6. The punching die for the circular bush as set forth in claim 5, wherein: the die also comprises a supporting plate (8), wherein the supporting plate (8) is fixedly connected with the top plate (10) through a connecting rod (9) penetrating through the lower die assembly (4).

7. The punching die for the circular bush according to claim 6, wherein: the upper die assembly (2) is provided with a plurality of guide sleeves (6), and the lower die assembly (4) is provided with guide pillars (7) matched with the guide sleeves (6).

8. The punching die for the circular bush according to claim 4, wherein: the movable groove (5 c) and the through hole (5 b) form a step groove structure.