CN215544306U

CN215544306U - Cylindrical workpiece coining die

Info

Publication number: CN215544306U
Application number: CN202121434142.0U
Authority: CN
Inventors: 肖海
Original assignee: Zhejiang Hongyuan Wheel Co ltd
Current assignee: Zhejiang Hongyuan Wheel Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-01-18
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses a cylindrical workpiece coining die which comprises a lower die plate and an upper die plate, wherein a plurality of lower supporting blocks are fixedly arranged on the lower die plate, a basin body is fixed on the upper die plate, a flaring conical surface is arranged at the lower end of the inner wall of the basin body, a plurality of slide ways are arranged on the flaring conical surface, the cross sections of the slide ways are T-shaped, T-shaped slide blocks capable of sliding along the slide ways are respectively arranged in the slide ways in a matched mode, the T-shaped slide blocks are respectively connected with inner modules, all the inner modules are arranged in a circumferential array mode around the central axis of the basin body, the inner sides of the inner modules are provided with die pressing surfaces matched with cylindrical workpieces, the inner modules correspond to the lower supporting blocks one by one, the lower ends of the inner modules are respectively positioned above the corresponding lower supporting blocks, and springs arranged on the upper die plate are arranged at the upper ends of the inner modules. The cylindrical workpiece coining die disclosed by the utility model can be used for coining an effective cylindrical workpiece, and the size processing precision of the workpiece can be still ensured after the cylindrical workpiece coining die is used for a long time. The coining process is fast and efficient, and can be used for fast and conveniently changing models according to products of different models.

Description

Cylindrical workpiece coining die

Technical Field

The utility model belongs to the technical field of dies, and particularly relates to a cylindrical workpiece coining die.

Background

Cylindrical workpieces such as intermediate connecting cylinders in the production process of wheel rims (as shown in fig. 1) have irregular structures and are generally formed by punching with a punching device. However, the dimensional accuracy of the punched workpiece is difficult to guarantee, and the punched workpiece can be obtained only by calculating the blank and performing finish machining on the blank. Due to the special structure of the cylindrical workpiece, the dimensional precision control of the cylindrical workpiece can be divided into a plurality of sections along the axial direction of the cylindrical workpiece, and the precision control by utilizing the existing die is very difficult. The mould is required to be replaced again after the cylindrical workpiece is shaped, and the cost is very high. Meanwhile, the existing die has the problem of difficult demoulding in the process of carrying out the coining on the cylindrical workpiece.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model adopts the technical scheme that: tubular workpiece coining die, including lower bolster and cope match-plate pattern, fixed mounting has a plurality of lower supporting shoes on the lower bolster, be fixed with the basin body on the cope match-plate pattern, the inner wall lower extreme of the basin body is equipped with the internal diameter from last flaring conical surface down progressively increasing, be equipped with a plurality of slides on the flaring conical surface, the cross-section of slide is the T type, cooperate the installation respectively in the slide and can follow the gliding T type slider of slide, T type slider is connected with interior module respectively, all interior modules are arranged around the axis circumference array of the basin body, the inboard of interior module have with tubular workpiece assorted die pressing surface, interior module and lower supporting shoe one-to-one, the lower extreme of interior module is located the top of corresponding lower supporting shoe respectively, the upper end of interior module is equipped with the spring of installing on the cope match-plate pattern.

Preferably, the lower template is provided with a lower positioning sleeve, the lower positioning sleeve and the pot body are coaxially arranged, and the lower positioning sleeve is matched with the cylindrical workpiece.

Preferably, the inner modules are respectively connected with the corresponding T-shaped sliding blocks through connecting blocks, the inner modules are fixedly connected with the connecting blocks in a detachable mode, the lower positioning sleeve is installed on the lower template through the lower backing ring, the lower positioning sleeve is fixedly installed on the lower backing ring in a detachable mode, and the lower backing ring and the lower positioning sleeve are arranged coaxially.

Preferably, the lower supporting block is mounted on the lower template through an outer mounting block, and the lower supporting block is detachably connected with the outer mounting block.

Preferably, the lower template is fixedly provided with a guide sleeve in the middle, and the upper template is provided with a guide post matched with the guide sleeve in the middle.

Preferably, the lower end of the pot body is provided with a plurality of lower positioning holes, the lower backing ring is fixedly connected with a knocking-off ring, the knocking-off ring is fixedly connected with a plurality of positioning pins, the positioning pins correspond to the positioning holes, and the knocking-off ring is provided with a yielding hole for the lower supporting block and the outer mounting block to pass through.

Preferably, an annular floating plate is arranged below the upper template, the upper end of the spring is connected with the upper template, the lower end of the spring is connected with the annular floating plate, a plurality of wear-resistant plates are arranged below the annular floating plate, the wear-resistant plates correspond to the connecting blocks, and the wear-resistant plates are connected with the corresponding connecting blocks.

Preferably, the inner side of the annular floating plate is provided with a plurality of guide seats, the guide seats are fixedly connected with the upper die plate, the outer side of the lower end of each guide seat is provided with a lower limiting ring, the inner side of the upper end of the annular floating plate is provided with an upper limiting ring which protrudes inwards, the lower limiting ring is located below the upper limiting ring, the outer side of the lower end of the annular floating plate is provided with an outer limiting ring which protrudes downwards, and the upper end of the wear-resisting plate is located inside the outer limiting ring.

As above-mentioned technical scheme's preferred, the spring is the nitrogen spring, is equipped with the last holding tank that is used for holding nitrogen spring upper end on the cope match-plate pattern, is equipped with the lower holding tank that is used for holding nitrogen spring lower extreme on the annular floating plate.

The utility model has the beneficial effects that: the cylindrical workpiece coining die disclosed by the utility model can be used for coining an effective cylindrical workpiece, and the size processing precision of the workpiece can be still ensured after the cylindrical workpiece coining die is used for a long time. The coining process is fast and efficient, and can be used for fast and conveniently changing models according to products of different models.

Drawings

FIG. 1 is a schematic view of a cylindrical workpiece;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic view of the slide and T-shaped slider.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, the cylindrical workpiece coining die comprises a lower template 1 and an upper template 2, the improved structure of the die comprises a lower die plate 1, a plurality of lower supporting blocks 3 are fixedly mounted on the lower die plate 1, a pot body 4 is fixed on an upper die plate 2, the inner wall lower end of the pot body 4 is provided with an expanding conical surface 5 with the inner diameter gradually increasing from top to bottom, a plurality of slideways 6 are arranged on the expanding conical surface 5, the cross sections of the slideways 6 are T-shaped, T-shaped sliders 7 capable of sliding along the slideways 6 are respectively mounted in the slideways 6 in a matched mode, the T-shaped sliders 7 are respectively connected with inner modules 8, all the inner modules 8 are arranged around the central axis circumference of the pot body 4 in an array mode, the inner sides of the inner modules 8 are provided with die pressing surfaces 10 matched with cylindrical workpieces 9, the inner modules 8 correspond to the lower supporting blocks 3 one by one, the lower ends of the inner modules 8 are respectively located above the corresponding lower supporting blocks 3, and springs 11 mounted on the upper die plate 2 are arranged at the upper ends of the inner modules 8. The cylindrical workpiece 9 is placed on the lower template 1, the upper template 2 descends, the cylindrical workpiece 9 is sleeved in the pot body 4, the inner module 8 acts on the outer surface of the cylindrical workpiece 9 in the descending process of the upper template 2, the lower end of the inner module 8 is supported by the lower support block 3 and does not descend after the pot body 4 continues to descend, and the spring 11 is compressed. Due to the matching relation between the slide way 6 on the flaring conical surface 5 and the T-shaped slide block 7, the T-shaped slide block 7 relatively moves to the upper end of the slide way 6, and thus the inner module 8 contracts towards the central axis direction of the pot body 4 to press the cylindrical workpiece 9 tightly. Then the upper template 2 rises, the T-shaped slide block 7 moves to the lower end of the slideway 6 relatively under the action of the gravity of the inner module 8 and the restoring force of the spring 11, and the inner module 8 loosens and tightens the cylindrical workpiece 9. After the upper template 2 continuously rises for a certain distance, the upper template 2 or the lower template 1 rotates for a certain angle, so that the inner module 8 and the cylindrical workpiece 9 rotate for a certain angle relatively, the steps are repeated, and the surface of the cylindrical workpiece 9 is subjected to finish pressing, so that the cylindrical workpiece 9 meets the requirement of controlling the dimensional precision. Due to the restoring force of the spring 11, the cylindrical workpiece 9 can be quickly demolded relative to the inner mold block 8.

Further, a lower positioning sleeve 12 is mounted on the lower template 1, the lower positioning sleeve 12 and the pot body 4 are coaxially arranged, and the lower positioning sleeve 12 is matched with the cylindrical workpiece 9. When the cylindrical workpiece 9 is placed on the lower die plate 1, the cylindrical workpiece 9 is positioned by the lower positioning sleeve 12.

Further, the inner modules 8 are respectively connected with the corresponding T-shaped sliding blocks 7 through connecting blocks 13, the inner modules 8 are fixedly connected with the connecting blocks 13 in a detachable mode, the lower positioning sleeve 12 is installed on the lower template 1 through a lower backing ring 14, the lower positioning sleeve 12 is fixedly installed on the lower backing ring 14 in a detachable mode, and the lower backing ring 14 and the lower positioning sleeve 12 are arranged coaxially. Therefore, after the cylindrical workpiece 9 is remodeled, the coining die can be remodeled only by replacing the corresponding inner die block 8 and the lower locating sleeve 12. All detachable fixed connection can be realized by adopting bolt connection.

Further, the lower support block 3 is mounted on the lower template 1 through an outer mounting block 15, and the lower support block 3 is detachably connected with the outer mounting block 15. The outer mounting block 15 and the lower backing ring 14 play a role in height increasing at the same time, an extra safety stroke is provided for the up-and-down relative movement process of the whole die, and the phenomenon that the cylindrical workpiece 9 is imprinted due to overlarge pressure of equipment is avoided.

Further, a guide sleeve 16 is fixedly installed in the middle of the lower template 1, and a guide post 17 matched with the guide sleeve 16 is arranged in the middle of the upper template 2. Through the guide fit of the guide sleeve 16 and the guide pillar 17, the stability of the up-and-down moving process of the upper template 2 is improved.

Furthermore, the lower end of the pot body 4 is provided with a plurality of lower positioning holes 18, the lower backing ring 14 is fixedly connected with a knocking ring 19, the knocking ring 19 is fixedly connected with a plurality of positioning pins 20, the positioning pins 20 correspond to the positioning holes 18, and the knocking ring 19 is provided with a abdicating hole 21 for the lower support block 3 and the outer mounting block 15 to pass through. The guide positioning matching of the positioning pin 20 and the positioning hole 18 further improves the stability of the basin body 4 in the lifting process, and ensures the precision of the cylindrical workpiece 9 in the coining process.

Furthermore, an annular floating plate 22 is arranged below the upper die plate 2, the upper end of the spring 11 is connected with the upper die plate 2, the lower end of the spring 11 is connected with the annular floating plate 22, a plurality of wear-resistant plates 23 are arranged below the annular floating plate 22, the wear-resistant plates 23 correspond to the connecting blocks 13, and the wear-resistant plates 23 are connected with the corresponding connecting blocks 13. In this embodiment, a module spacer block 24 is further provided between the wear plate 23 and the corresponding connecting block 13. The annular floating plate 22 can move relative to the wear plate 23 in a plane, so that the spring 11 does not interfere with the retraction of the connecting block 13 and the inner module 8. The wear plate 23 is made of a wear resistant material. The wear plates 23 are connected to the respective connecting blocks 13 without affecting the remodelling of the inner module 8.

Further, a plurality of guide seats 24 are arranged on the inner side of the annular floating plate 22, the guide seats 24 are fixedly connected with the upper die plate 2, a limiting lower ring 25 is arranged on the outer side of the lower end of each guide seat 24, a limiting upper ring 26 protruding inwards is arranged on the inner side of the upper end of the annular floating plate 22, the limiting lower ring 25 is located below the limiting upper ring 26, a limiting outer ring 27 protruding downwards is arranged on the outer side of the lower end of the annular floating plate 22, and the upper end of the wear-resisting plate 23 is located on the inner side of the limiting outer ring 27. The guide seat 24 limits the movement of the annular floating plate 22 in the horizontal plane direction, and the cooperation of the lower limiting ring 25 and the upper limiting ring 26 limits the movement distance of the annular floating plate 22 in the vertical direction, so that the guide seat 24 can hang the annular floating plate 22, and the spring 11 is prevented from receiving the gravity action of the annular floating plate 22 after being extended again.

Further, the spring 11 is a nitrogen spring, an upper receiving groove 28 for receiving an upper end of the nitrogen spring is formed in the upper die plate 2, and a lower receiving groove 29 for receiving a lower end of the nitrogen spring is formed in the annular floating plate 22.

The matching relation of the slide 6 and the T-shaped slide 7, the inner module 8 can be quickly positioned once to carry out the fine pressing on the cylindrical workpiece 9. The matching effect of the annular floating plate 22, the nitrogen spring, the guide seat 24 and the wear-resisting plate 23 is used for carrying out secondary positioning on the inner module 8, and the precision of the cylindrical workpiece 9 is further improved. The secondary positioning avoids the situation that the inner module 8 cannot be accurately positioned due to the fact that the error is increased after transitional wear exists only by means of the primary positioning process of the slide rail 6 and the T-shaped sliding block 7. Crushing of the cylindrical workpiece 9 is avoided.

It should be noted that the technical features such as the nitrogen spring and the like related to the present patent application should be regarded as the prior art, and the specific structure, the operation principle, the control mode and the spatial arrangement mode of the technical features may be selected conventionally in the field, and should not be regarded as the utility model point of the present patent, and the present patent is not further specifically described in detail.

Having described preferred embodiments of the present invention in detail, it is to be understood that modifications and variations may be resorted to without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. Tube-shape work piece coining die, a serial communication port, including lower bolster and cope match-plate pattern, fixed mounting has a plurality of lower supporting shoes on the lower bolster, be fixed with the basin body on the cope match-plate pattern, the inner wall lower extreme of the basin body is equipped with the internal diameter from last flaring conical surface down progressively increasing, be equipped with a plurality of slides on the flaring conical surface, the cross-section of slide is the T type, cooperate the installation respectively in the slide can follow the gliding T type slider of slide, T type slider is connected with interior module respectively, all interior modules are arranged around the axis circumference array of the basin body, the inboard of interior module have with tube-shape work piece assorted die pressing surface, interior module and lower supporting shoe one-to-one, the lower extreme of interior module is located the top of corresponding lower supporting shoe respectively, the upper end of interior module is equipped with the spring of installing on the cope match-plate pattern.

2. The cylindrical workpiece coining die according to claim 1, wherein a lower locating sleeve is mounted on the lower template, the lower locating sleeve and the pot body are coaxially arranged, and the lower locating sleeve is matched with the cylindrical workpiece.

3. The cylindrical workpiece coining die according to claim 2, wherein the inner die blocks are respectively connected with the corresponding T-shaped sliding blocks through connecting blocks, the inner die blocks are detachably and fixedly connected with the connecting blocks, the lower positioning sleeve is installed on the lower die plate through a lower backing ring, the lower positioning sleeve is detachably and fixedly installed on the lower backing ring, and the lower backing ring and the lower positioning sleeve are coaxially arranged.

4. The cylindrical workpiece coining die according to claim 3, wherein the lower support block is mounted on the lower die plate through an outer mounting block, and the lower support block is detachably connected with the outer mounting block.

5. The cylindrical workpiece coining die according to claim 4, wherein a guide sleeve is fixedly installed at the middle part of the lower die plate, and a guide post matched with the guide sleeve is arranged at the middle part of the upper die plate.

6. The cylindrical workpiece coining die according to claim 5, wherein a plurality of lower positioning holes are formed at a lower end of the pot body, a knocking-off ring is fixedly connected to the lower backing ring, a plurality of positioning pins are fixedly connected to the knocking-off ring, the positioning pins correspond to the positioning holes, and a relief hole for the lower supporting block and the outer mounting block to pass through is formed in the knocking-off ring.

7. The cylindrical workpiece coining die according to claim 1, wherein an annular floating plate is provided under the upper die plate, an upper end of the spring is connected to the upper die plate, a lower end of the spring is connected to the annular floating plate, a plurality of wear plates are provided under the annular floating plate, the wear plates correspond to the connection blocks, and the wear plates are connected to the corresponding connection blocks.

8. The cylindrical workpiece coining die according to claim 7, wherein a plurality of guide seats are formed on an inner side of the annular floating plate, the guide seats are fixedly connected with the upper die plate, a lower limit ring is formed on an outer side of a lower end of each guide seat, an upper limit ring formed to protrude inwards is formed on an inner side of an upper end of the annular floating plate, the lower limit ring is located below the upper limit ring, an outer limit ring formed to protrude downwards is formed on an outer side of a lower end of the annular floating plate, and an upper end of the wear-resisting plate is located inside the outer limit ring.

9. The cylindrical workpiece coining die according to claim 8, wherein the spring is a nitrogen spring, an upper receiving groove for receiving an upper end of the nitrogen spring is formed on the upper die plate, and a lower receiving groove for receiving a lower end of the nitrogen spring is formed on the annular floating plate.