CN212397827U

CN212397827U - Composite forming structure in progressive die

Info

Publication number: CN212397827U
Application number: CN202020511267.8U
Authority: CN
Inventors: 张文斌; 张百辰
Original assignee: Dongguan Jinshangjia Die Technology Co ltd
Current assignee: Dongguan Jinshangjia Die Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2021-01-26
Anticipated expiration: 2030-04-09

Abstract

The utility model discloses a composite forming structure in a progressive die, which comprises an upper die and a lower die; the upper die comprises an upper die seat plate, an upper base plate, a male clamping plate, a stripper plate and a stripper plate which are arranged in sequence from top to bottom; the lower die comprises a lower die plate, a lower base plate and a lower die base plate which are arranged in sequence from top to bottom; the upper die also comprises a cold heading punch and a stripping forming composite insert, the stripping forming composite insert is arranged on the stripping plate, a punch hole penetrates through the stripping forming composite insert from top to bottom, and the lower part of the stripping forming composite insert is provided with a circumferential annular flange along the side wall of the punch hole; the upper part of the cold heading punch is arranged on the male clamping plate, and the lower part of the cold heading punch sequentially penetrates through the stripper plate and the punch hole from top to bottom; the lower die further comprises an upright post, a retainer ring, a spring, a striking plate, a thimble, a floating bottom and a striking rod. The utility model discloses can accomplish multiple shaping operation in a station of modulus of continuity.

Description

Composite forming structure in progressive die

Technical Field

The utility model belongs to the technical field of the mould technique and specifically relates to a compound shaping structure in modulus of continuity.

Background

In modern manufacturing industry, dies such as stamping dies, forging dies, die casting dies, etc. are one of the important tools for industrial production of various parts. For some parts with complex shapes, as the forming process needs to carry out a plurality of different forming operations step by step, a progressive die is often adopted for operation, namely a plurality of different stations are sequentially arranged in the progressive die according to the process requirements, and each station corresponds to one forming operation; however, the existing progressive die has the defects of excessive stations, large occupied space, high overall manufacturing cost and the like.

Thus, the prior art is subject to improvement and advancement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a compound shaping structure in modulus of continuity to the problem among the above-mentioned prior art, the purpose can accomplish the shaping operation of the multiple difference of work piece in a station of modulus of continuity through this compound forming mechanism.

In order to solve the technical problem, the utility model adopts a technical proposal that a composite forming structure in a progressive die comprises an upper die and a lower die; the upper die comprises an upper die seat plate, an upper base plate, a male clamping plate, a stripper plate and a stripper plate which are arranged in sequence from top to bottom; the lower die comprises a lower die plate, a lower base plate and a lower die base plate which are arranged in sequence from top to bottom; the upper die also comprises a cold heading punch and a stripping forming composite insert, the stripping forming composite insert is arranged on the stripping plate, a punch hole penetrates through the stripping forming composite insert from top to bottom, and the lower part of the stripping forming composite insert is provided with a circumferential annular flange along the side wall of the punch hole; the upper part of the cold heading punch is arranged on the male clamping plate, and the lower part of the cold heading punch sequentially penetrates through the stripper plate and the punch hole from top to bottom; the lower die also comprises an upright post, a check ring, a spring, a striking plate, a thimble, a floating bottom and a striking rod; the upright post is arranged on the lower side of the lower base plate, and the retainer ring, the spring and the beating plate are sequentially sleeved on the upright post from bottom to top; two ends of the spring respectively abut against the retainer ring and the striking plate; the thimble penetrates through the lower base plate, one end of the thimble is matched with the beating plate, and the other end of the thimble is matched with the floating bottom; the floating bottom is slidably mounted on the lower die insert and used for supporting a workpiece, and the lower die insert is arranged on the lower template; one end of the striking rod is matched with the striking plate, and the other end of the striking rod penetrates through the lower base plate and the lower die plate from bottom to top in sequence and then is matched with the stripper plate.

As a further elaboration of the above technical solution:

in the technical scheme, the middle part of the male clamping plate is provided with a male clamping bushing in a penetrating mode, and the cold heading punch is arranged on the male clamping bushing.

In the technical scheme, the stripper plate is provided with a shaft sleeve, and the shaft sleeve is in clearance fit with the cold heading punch.

In the technical scheme, the peripheral side end edge of the bottom end of the cold heading punch is provided with the step, and the joint of the horizontal plane of the step and the vertical plane is in fillet transition.

In the above technical solution, a mold release slope is provided between the bottom surface and the outer side wall surface of the annular flange.

In the above technical solution, the draft angle of the mold release is 135 °.

In the technical scheme, the upright posts are shaft shoulder screws, and the two shaft shoulder screws are screwed on the lower side of the lower base plate; the retainer ring is a gasket, and the lower wall of the gasket is abutted against the shaft shoulder of the shaft shoulder screw; and two ends of the striking plate are respectively provided with a through hole for the corresponding shaft shoulder screw to pass through.

The utility model has the advantages that firstly, the utility model forms a ring groove at the peripheral end edge of the workpiece while clamping the workpiece by matching the stripping forming composite mold insert and the lower mold insert, and then completes the cold heading deformation operation of the middle groove of the workpiece by the cold heading punch, the floating bottom, the stripping forming composite mold insert and the lower mold insert together, so that the continuous mold can complete two operations on one station successively; secondly, compared with the structure that the material stripping plate and the material stripping forming composite mold insert are integrally formed and the lower mold plate and the lower mold insert are integrally formed, the structure that the material stripping plate and the material stripping forming composite mold insert are integrally formed and the lower mold plate and the lower mold insert are integrally formed only by adopting materials with higher cost and processing technology, so that the utility model has lower overall cost and is more suitable for industrial production; thirdly, the utility model discloses in by the lower of end is floated in the dozen pole control, consequently changes the length of beating can conveniently adjust the size of the work piece that floats end and cold-heading punch shaping play, and the cost of beating the pole is compared in floating the end lower, consequently has the advantage of adjusting convenience, with low costs.

Drawings

Fig. 1 is a sectional view of the present invention in a mold clamping state;

FIG. 2 is a cross-sectional view of the utility model in the open state;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, 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," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. 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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Fig. 1-3 illustrate an embodiment of a composite molding structure in a progressive die according to the present invention, and referring to fig. 1-3, a composite molding structure in a progressive die includes an upper die and a lower die. The upper die comprises an upper die seat plate 1, an upper base plate 2, a male clamping plate 3, a stripping plate 4 and a stripping plate 5 which are arranged in sequence from top to bottom; specifically, the method comprises the following steps: the upper die base plate 1, the upper base plate 2 and the male clamp plate 3 are fixedly connected through bolts, the stripper plate 4 is movably mounted at the lower side of the male clamp plate 3 in a vertically sliding manner through a guide pillar (not shown in the figure) and a guide sleeve (not shown in the figure), a nitrogen spring (not shown in the figure) is abutted between the stripper plate 4 and the male clamp plate 3, and the stripper plate 4 is fixed with the stripper plate 5 in a threaded manner. The lower die comprises a lower die plate 6, a lower backing plate 7 and a lower die seat plate 8 which are arranged in sequence from top to bottom; specifically, the method comprises the following steps: the lower template 6, the lower backing plate 7 and the lower die base 8 are fixed in a threaded manner.

The upper die further comprises a cold heading punch 9 and a stripping forming composite insert 10, the stripping forming composite insert 10 is arranged on the stripping plate 5, a punch hole penetrates through the stripping forming composite insert 10 from top to bottom, and a circumferential annular flange 11 is arranged at the lower part of the stripping forming composite insert 10 along the side wall of the punch hole; the upper portion of cold-heading punch 9 is located on the punch plate 3, and the lower portion of the cold-heading punch 9 sequentially penetrates through the backing plate 4 and the punch from top to bottom.

The lower die further comprises a stand column 12, a retainer ring 13, a spring 14, a striking plate 15, a thimble 16, a floating bottom 17 and a striking rod 18. The middle part of the lower die base 8 is provided with a position avoiding hole, the upright post 12 is positioned in the position avoiding hole, and the top end of the upright post 12 is fixedly connected with the lower backing plate 7. The retainer ring 13, the spring 14 and the striking plate 15 are all positioned in the avoiding hole and are sequentially sleeved on the upright post 12 from bottom to top; the two ends of the spring 14 respectively abut against the retainer ring 13 and the striking plate 15. The thimble 16 is movably inserted in the lower bolster 7 up and down, the lower end of the thimble 16 is connected to the striking plate 15, the upper end of the thimble 16 is connected to the floating bottom 17, the floating bottom 17 is slidably mounted on the lower mold insert 19, and the lower mold insert 19 is fixedly mounted on the lower bolster 6. The lower end of the striking rod 18 is connected with the striking plate 15, and the upper end of the striking rod 18 penetrates through the lower backing plate 7 and the lower template 6 from bottom to top in sequence and then is matched with the stripper plate 4.

Further, the middle part of the male clamping plate 3 is provided with a male clamping bushing 20 in a penetrating mode, and the cold heading punch 9 is arranged on the male clamping bushing 20. In order to ensure the precision of the die in the actual use process, the cold heading punch 9 and the part for mounting the cold heading punch 9 have higher machining precision and material cost; and the utility model discloses in set up one in the public splint 3 public clamp bushing 20 is used for the installation cold-heading punch 9, compare in with the cold-heading punch 9 snap-on is in on the public splint 3, public clamp bushing 20's material cost obviously descends, simultaneously because the reduction of required machining area public clamp bushing 20's processing cost also reduces, more is applicable to the industrial production.

Further, a shaft sleeve 21 is arranged on the stripper plate 4, and the shaft sleeve 21 is in clearance fit with the cold heading punch 9; in order to ensure the integral precision of the die, the cold heading punch 9 and the part for mounting the cold heading punch 9 have higher machining precision and material cost; and the utility model discloses in take off and set up one in the backplate 4 the axle sleeve 21 is used for supplying cold-heading punch 9 slides from top to bottom, compare in with cold-heading punch 9 directly with take off backplate 4 cooperation, cold-heading punch 9's material cost obviously descends, simultaneously because the reduction of required machining area cold-heading punch 9's processing cost also reduces, more is applicable to the industrial production.

Furthermore, the circumference of the bottom end edge of the cold heading punch 9 is provided with a circumferential step 22, and the joint of the horizontal plane of the step 22 and the vertical plane is in fillet transition, so that a circumferential arc surface can be formed at the notch of the groove in the middle of the workpiece.

Furthermore, a demoulding inclination is arranged between the bottom surface and the outer side wall surface of the annular flange 11, the demoulding inclination is 135 degrees, and when the mould is opened, a workpiece is effectively prevented from being tightly coated on the annular flange 11.

Further, the upright post 12 is a shaft shoulder screw, and the two shaft shoulder screws are screwed on the lower side of the lower backing plate 7; the retainer ring 13 is a gasket, and the lower wall of the gasket is abutted against the shaft shoulder of the shaft shoulder screw; and two ends of the beating plate 15 are respectively provided with a through hole for the shaft shoulder screw to pass through.

The utility model discloses at the during operation, by external punch press drive go up 1 uplinks of die bed board, and will lower die bed board 8 and table surface fixed connection, combine below the utility model discloses a work flow is right the utility model discloses a theory of operation explains:

firstly, closing the mold. Firstly, the upper die plate 1, the upper cushion plate 2, the male splint 3, the stripper plate 4 and the stripper plate 5 synchronously descend, and the elastic coefficient of the nitrogen spring is greater than that of the spring 14, so that the nitrogen spring is not deformed first and is deformed by the spring 14, further the stripper plate 5 pushes the striking rod 18 to descend, at this time, the striking rod 18, the striking plate 15, the ejector pin 16 and the floating bottom 17 synchronously descend, the spring 14 is compressed, until the striking rod 18 descends to a lower dead point, the stripper molded composite insert 10 and the lower die insert 19 clamp a workpiece, and a corresponding annular groove is molded on the peripheral side of the workpiece by the annular flange 11 of the stripper molded composite insert 10; then, the stripper plate 5 is stopped by the striking rod 18 and cannot continuously descend, the upper die plate 1, the upper padding plate 2, the male splint 3 and the cold heading punch 9 continuously and synchronously descend, so that the nitrogen spring between the stripper plate 4 and the male splint 3 is compressed, the cold heading punch 9 descends relative to the stripper forming composite insert 10 and enters the lower die plate 6, and at the moment, the cold heading punch 9, the stripper forming composite insert 10, the lower die insert 19 and the floating bottom 17 perform cold heading deformation operation on the groove in the middle of the workpiece, so that the workpiece is plastically deformed.

And secondly, opening the die. Firstly, the upper die plate 1, the upper cushion plate 2 and the male clamping plate 3 synchronously move upwards, at the moment, a nitrogen spring between the stripper plate 4 and the male clamping plate 3 is restored, so that the stripper plate 5 and the stripper plate 4 cannot follow upwards, at the moment, the stripper molded composite insert 10 and the lower die insert 19 still clamp a workpiece, and the cold heading punch 9 moves upwards relative to the stripper molded composite insert 10, so that the cold heading punch 9 is separated from the workpiece; then, when the nitrogen spring is completely restored, the upper die base plate 1 continues to move upwards and drives all parts of the upper die to move upwards synchronously, at this time, the stripping and forming composite insert 10 is separated from the workpiece, the spring 14 is restored and drives the striking plate 15, the striking rod 18, the ejector pin 16 and the floating bottom 17 to move upwards, and the workpiece is ejected out of the lower die plate 6 in the process that the floating bottom 17 moves upwards.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. A composite forming structure in a progressive die comprises an upper die and a lower die; the upper die comprises an upper die seat plate, an upper base plate, a male clamping plate, a stripper plate and a stripper plate which are arranged in sequence from top to bottom; the lower die comprises a lower die plate, a lower base plate and a lower die base plate which are arranged in sequence from top to bottom; it is characterized in that the preparation method is characterized in that,

the upper die also comprises a cold heading punch and a stripping forming composite insert, the stripping forming composite insert is arranged on the stripping plate, a punch hole penetrates through the stripping forming composite insert from top to bottom, and the lower part of the stripping forming composite insert is provided with a circumferential annular flange along the side wall of the punch hole; the upper part of the cold heading punch is arranged on the male clamping plate, and the lower part of the cold heading punch sequentially penetrates through the stripper plate and the punch hole from top to bottom;

the lower die also comprises an upright post, a check ring, a spring, a striking plate, a thimble, a floating bottom and a striking rod; the upright post is arranged on the lower side of the lower base plate, and the retainer ring, the spring and the beating plate are sequentially sleeved on the upright post from bottom to top; two ends of the spring respectively abut against the retainer ring and the striking plate; the thimble penetrates through the lower base plate, one end of the thimble is matched with the beating plate, and the other end of the thimble is matched with the floating bottom; the floating bottom is slidably mounted on the lower die insert and used for supporting a workpiece, and the lower die insert is arranged on the lower template; one end of the striking rod is matched with the striking plate, and the other end of the striking rod penetrates through the lower base plate and the lower die plate from bottom to top in sequence and then is matched with the stripper plate.

2. The composite molding structure in a progressive die as claimed in claim 1, wherein a male insert sleeve is provided through a middle portion of the male clamping plate, and the cold heading punch is provided on the male insert sleeve.

3. The composite molding structure in a progressive die as claimed in claim 2, wherein a bushing is provided on the backing plate, the bushing being in clearance fit with the cold heading punch.

4. The composite molding structure in a progressive die as claimed in claim 3, wherein the peripheral side edge of the bottom end of the cold heading punch is provided with a step, and the connection between the horizontal plane and the vertical plane of the step is a rounded transition.

5. A composite moulding arrangement in a continuous mould according to any one of claims 1 to 4, wherein a draft angle is provided between the base of the annular flange and the outer side wall.

6. A composite moulding structure in a continuous mould according to claim 5, wherein the draft angle of the mould is 135 °.

7. The composite molding structure in a continuous die according to claim 6, wherein the pillar is a shoulder screw, and two shoulder screws are screwed on the lower side of the lower backing plate; the retainer ring is a gasket, and the lower wall of the gasket is abutted against the shaft shoulder of the shaft shoulder screw; and two ends of the striking plate are respectively provided with a through hole for the corresponding shaft shoulder screw to pass through.