CN219924306U

CN219924306U - Spoke plate pressing forming die and forming mechanism

Info

Publication number: CN219924306U
Application number: CN202321442594.2U
Authority: CN
Inventors: 郭强; 姜亚楠; 赵娜; 张伟
Original assignee: Weichai Lovol Intelligent Agricultural Technology Co Ltd
Current assignee: Weichai Lovol Intelligent Agricultural Technology Co Ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-10-31
Anticipated expiration: 2033-06-06

Abstract

The utility model relates to a spoke plate pressing forming die and a forming mechanism, wherein the spoke plate pressing forming die comprises an upper die holder, a lower die holder, a ejector and a pressing plate, wherein the ejector is placed in a concave die cavity of the lower die holder and can be driven to move up and down, an upper die male die insert which is arranged opposite to the ejector up and down is arranged on the lower surface of the upper die holder, and a plurality of upper die nitrogen springs and a plurality of upper die discharging screws are further arranged on the periphery of the upper die male die insert on the lower surface of the upper die holder; the punch press is characterized in that punch press plate is provided with punch press perforations and a plurality of limiting holes, the limiting holes are located around the punch press perforations, the punch press plate penetrates through the punch press perforations to be arranged on the upper punch insert, the punch press plate is sleeved with the limiting holes one by one and movably limited on the upper punch discharge screw, the upper punch nitrogen springs are arranged downwards and are abutted to the punch press plate, and the lower surface of the punch press plate is flush with the lower surface of the upper punch insert.

Description

Spoke plate pressing forming die and forming mechanism

Technical Field

The utility model relates to the technical field related to agricultural machinery, in particular to a spoke plate pressing forming die and a forming mechanism.

Background

With the continuous development of the large-scale agricultural harvesting machinery industry, the requirements on the cleaning efficiency of harvested crops are higher and higher, more double-axial flow machine types are combined with market demands, the requirements on the number and quality of spoke plates are also improved to a higher level by combining machine type structure demands, and the problems of uneven flanging surface, rebound and the like caused by the traditional spoke plate stamping forming mode are increasingly outstanding.

The prior flanging process adopts the direct flanging of the circumferential ring without pressing, the flanging process is the pressing of a middle pressing plate, the direct flanging of a convex-concave die is carried out, the flange edge is uncontrolled in the forming process, and the quality problem of uneven flanging surface is easy to occur. In order to control the uneven phenomenon of the flanging surface, the flanging gap needs to be reduced, and the surface of the part is easy to be napped. The existing left and right spoke plates are similar in shape, so that the situation of assembly errors of the left and right spoke plates is easy to occur, and the assembly efficiency of the whole machine is affected or the assembly errors are caused.

Along with the increasing size precision of high-end agricultural machine types to sheet metal parts, the utility model provides a pressing forming process of a spoke plate, which ensures the size precision of the spoke plate parts, simultaneously maintains certain structural stability and has important significance.

Disclosure of Invention

The utility model provides a spoke plate pressing forming die and a forming mechanism for solving one or more of the technical problems in the prior art.

The technical scheme for solving the technical problems is as follows: the spoke plate pressing forming die comprises an upper die holder, a lower die holder, a ejector and a pressing plate, wherein the ejector is placed in a die cavity of the lower die holder and can be driven to move up and down, an upper die male die insert which is arranged opposite to the ejector up and down is arranged on the lower surface of the upper die holder, and a plurality of upper die nitrogen springs and a plurality of upper die discharging screws are further arranged on the periphery of the upper die male die insert on the lower surface of the upper die holder;

the punch press is characterized in that punch press plate is provided with punch press perforations and a plurality of limiting holes, the limiting holes are located around the punch press perforations, the punch press plate penetrates through the punch press perforations to be arranged on the upper punch insert, the punch press plate is sleeved with the limiting holes one by one and movably limited on the upper punch discharge screw, the upper punch nitrogen springs are arranged downwards and are abutted to the punch press plate, and the lower surface of the punch press plate is flush with the lower surface of the upper punch insert.

The beneficial effects of the utility model are as follows: the spoke plate material pressing forming die is used for pressing and stamping forming, so that the dimensional accuracy of parts can be better realized, meanwhile, certain stability is maintained, and the spoke plate material pressing forming die has obvious advantages compared with the traditional manual correction and simple tool forming. The spoke plate pressing forming die is not only applied to the thick plate material, but also is applicable to the thin plate material, and simultaneously, good forming effect is also shown.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, a first guide mechanism is arranged on the inner side wall of the die cavity, a second guide mechanism is arranged on the outer side wall of the ejector, and the ejector can move up and down and enter and exit the die cavity by matching the first guide mechanism with the second guide mechanism.

The beneficial effects of adopting the further scheme are as follows: by providing guide means on the mould cavity and the ejector respectively, uncontrolled ejection of the ejector during ejection is avoided.

Further, a through hole for the push rod of the machine tool to pass through is formed in the bottom wall of the female die cavity.

Further, the female mold cavity is a cylindrical cavity.

Further, an anti-reflection screw is arranged on the upper surface of the ejector, an avoidance hole is formed in the upper die male die insert, and the avoidance hole and the anti-reflection screw are correspondingly arranged.

The beneficial effects of adopting the further scheme are as follows: by arranging the anti-reflection screw, the purpose that the left and right parts to be molded share one set of forming die production is also met while the part molding precision is ensured, and the modularized production is realized.

Further, the lower surface of the upper die holder is provided with a guide post which is vertically arranged, the upper surface of the lower die holder is provided with a guide groove, and the guide post is inserted in the guide groove in an adaptive manner to realize the guide of the up-and-down movement between the upper die holder and the lower die holder.

The beneficial effects of adopting the further scheme are as follows: the guide post is matched with the guide groove, so that stable matching between the upper die holder and the lower die holder is facilitated.

Further, the limiting hole is a stepped hole with a large lower part and a small upper part, and a nut at the lower end of the upper die unloading screw is abutted against a step of the stepped hole;

the nut at the lower end of the upper die unloading screw is hidden in the stepped hole, or a nut avoiding groove which is correspondingly arranged with the upper die unloading screw is formed in the lower die seat.

The beneficial effects of adopting the further scheme are as follows: the upper die unloading screw can guide the pressing plate to move up and down, and interference of an upper nut of the upper die unloading screw to the forming process is avoided.

Further, the upper die punch insert and the ejector are both of cylindrical structures, and the diameters of the upper die punch insert and the ejector are the same.

The spoke plate pressing and forming mechanism comprises the spoke plate pressing and forming die, and further comprises a machine tool ejector rod and a driving mechanism, wherein the machine tool ejector rod penetrates through the female die cavity from bottom to top and is connected with the bottom of the ejector, and the driving end of the driving mechanism is connected with the upper die holder and drives the upper die holder to move up and down.

The beneficial effects of the utility model are as follows: according to the spoke plate pressing forming mechanism, the uneven phenomenon of the flanging surface of a formed plate is greatly optimized, meanwhile, the forming insert is designed on the lower die base of the die by adjusting the newly added pressing plate, the elastic pressing system is designed on the upper die, uninterrupted pressing in the forming process is met, the flatness of the pressing surface is improved, and meanwhile, the problem of napping of the flange surface is relieved.

Drawings

FIG. 1 is a schematic perspective view of a ejector in a spoke plate pressing forming die of the utility model;

FIG. 2 is a schematic diagram of a perspective structure of a lower die holder in a spoke plate pressing and forming die of the utility model;

FIG. 3 is a schematic diagram of a perspective structure of an upper die holder in a spoke plate pressing and forming die of the utility model;

FIG. 4 is a schematic perspective view of a pressing plate in a spoke plate pressing and forming die of the utility model;

FIG. 5 is an enlarged schematic view of the portion A in FIG. 4;

FIG. 6 is a schematic diagram showing a cross-sectional structure of an upper die holder in a spoke plate pressing and forming die of the utility model;

fig. 7 is a schematic diagram II of a cross-sectional structure of an upper die holder in the spoke plate pressing and forming die of the utility model.

In the drawings, the list of components represented by the various numbers is as follows:

100. an upper die holder; 101. an upper die punch insert; 102. an upper die nitrogen spring; 103. an upper die unloading screw; 104. a guide post; 105. avoidance holes;

200. a lower die holder; 201. a lower die insert; 202. a female mold cavity; 203. a first guide mechanism; 204. a through hole; 205. a guide groove; 206. nut avoiding grooves; 207. limiting convex columns;

300. a ejector; 301. a second guide mechanism; 302. an anti-reverse screw;

400. a pressing plate; 401. a stepped hole; 402. a step; 403. and (5) punching by a male die.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

As shown in fig. 1 to 7, the spoke plate pressing forming mold of the present embodiment includes an upper mold base 100, a lower mold base 200, a ejector 300 and a pressing plate 400, wherein the ejector 300 is placed in a concave mold cavity 202 of the lower mold base 200 and can be driven to move up and down, an upper mold male mold insert 101 which is arranged opposite to the ejector 300 up and down is arranged on the lower surface of the upper mold base 100, and a plurality of upper mold nitrogen springs 102 and a plurality of upper mold unloading screws 103 are further arranged on the periphery of the upper mold male mold insert 101 on the lower surface of the upper mold base 100;

the punch press plate 400 is provided with punch perforation 403 and a plurality of limiting holes, a plurality of limiting holes are positioned around the punch perforation 403, the punch press plate 400 is penetrated on the upper punch insert 101 through the punch perforation 403, the punch press plate 400 is sleeved with the limiting holes one by one and movably limited on the upper punch discharge screw 103, a plurality of upper punch nitrogen springs 102 are downwards arranged and are abutted on the punch press plate 400, and the lower surface of the punch press plate 400 is flush with the lower surface of the upper punch insert 101.

The upper die nitrogen spring 102 is adopted for matching and pressing, and the gap of the plate to be formed can be accurately controlled by adjusting the pressure of the nitrogen cylinder. The number of the limiting holes can be multiple, for example, 4, 5 and the like. The number of the upper die nitrogen springs 102 may be plural, for example, 4, 5, 6, etc. The plurality of limiting holes and the plurality of upper die nitrogen springs 102 may be uniformly staggered so as to apply uniform and stable force to the platen 400. The shapes of the upper die holder 100 and the lower die holder 200 may be arbitrarily set as required, and fig. 2 and 3 show the shapes adopting a cubic structure, but may be set in other shapes, such as polygonal or cylindrical shapes, etc.

As shown in fig. 1 and 2, a first guiding mechanism 203 is disposed on an inner sidewall of the cavity 202 of the present embodiment, a second guiding mechanism 301 is disposed on an outer sidewall of the ejector 300, and the first guiding mechanism 203 cooperates with the second guiding mechanism 301 to enable the ejector 300 to move up and down and to move in and out of the cavity 202. By providing guide means on the mould cavity and the ejector respectively, uncontrolled ejection of the ejector during ejection is avoided. Specifically, the first guiding mechanism 203 may be configured as a sliding block or a sliding groove, and the second guiding mechanism 301 may be configured as a sliding groove or a sliding block, where the two guiding mechanisms cooperate to enable the ejector 300 to slide up and down in the cavity 202.

As shown in fig. 2, a through hole 204 for the machine tool ejector pin to pass through is formed in the bottom wall of the female die cavity 202 in this embodiment. The number of the through holes 204 may be arbitrarily set, and is generally set to be plural, so as to stably support the ejector 300.

As shown in fig. 2, the female die cavity 202 of the present embodiment is a cylindrical cavity.

As shown in fig. 1, an anti-reflection screw 302 is disposed on the upper surface of the ejector 300 in this embodiment, and the upper punch insert 101 is provided with an avoidance hole 105, where the avoidance hole 105 is disposed corresponding to the anti-reflection screw 302. The number of the anti-reflection screws 302 may be any number, for example, two or more. By arranging the anti-reflection screw, the purpose that the left and right parts to be molded share one set of forming die production is also met while the part molding precision is ensured, and the modularized production is realized.

As shown in fig. 2 and 3, the lower surface of the upper die holder 100 in this embodiment is provided with a vertically arranged guide post 104, the upper surface of the lower die holder 200 is provided with a guide groove 205, and the guide post 104 is inserted into the guide groove 205 in an adapting manner to realize the guiding of the up-and-down movement between the upper die holder 100 and the lower die holder 200. The guide post is matched with the guide groove, so that stable matching between the upper die holder and the lower die holder is facilitated. The guide posts 104 may be provided in two, and the corresponding guide grooves 205 may be provided in two.

As shown in fig. 4 and 5, the limiting hole in this embodiment is a stepped hole 401 with a large bottom and a small top, and a nut at the lower end of the upper die unloading screw 103 abuts against a step 402 of the stepped hole 401; the nut at the lower end of the upper die unloading screw 103 is hidden in the stepped hole 401, or a nut avoiding groove 206 which is arranged corresponding to the upper die unloading screw 103 is formed in the lower die holder 200. The upper die unloading screw can guide the pressing plate to move up and down, and interference of an upper nut of the upper die unloading screw to the forming process is avoided.

As shown in fig. 1 and 3, the upper punch insert 101 and the ejector 300 of the present embodiment are each of a cylindrical structure, and the diameters of the upper punch insert 101 and the ejector 300 are the same.

Specifically, as shown in fig. 2, a plurality of lower die inserts 201 are disposed in the lower die holder 200, the lower die inserts 201 surround to form a cylindrical die cavity 202, and an annular material pressing and flanging gap is reserved between the ejector 300 and the upper end of the die cavity 202, so as to facilitate flanging and material pressing of the sheet to be formed.

The ejector 300 of the present embodiment is used to hold the sheet to be formed on one hand, and on the other hand, it is matched with the male die insert of the upper die to press the middle of the sheet to be formed instead of the flanging part, so that the inner and outer simultaneous pressing is realized, the ejector 300 is matched with the female die cavity through the guiding mechanism, and the upward power is provided by the machine tool ejector rod at the bottom. The pressing plate 400 is mainly used for pressing the flanging position of the plate to be formed, and starts pressing from the initial stage of forming the plate to be formed until the flanging is completed, so that a large effect is achieved on flattening the flanging surface of the plate to be formed. The lower die holder 200 is internally provided with a lower die insert 201, the lower die insert 201 forms the die cavity 202, the lower die holder 200 mainly serves as a carrier of the lower die insert 201, and the ejector 300 is also arranged in the die cavity 202 of the lower die insert 201 through a guide mechanism. The lower die insert 201 interacts with the upper die male insert 101 of the upper die holder 100 to complete the flanging process of the sheet material to be formed. The upper die holder 100 is mainly used as a carrier of the upper die male die insert 101, and realizes guiding through the cooperation of the guide post 104 and the guide groove 205, so that the vertical accuracy of the die in the stamping process is controllable; the upper die nitrogen spring 102 is used for providing a pressure source for the material pressing plate and ensuring that the plate material to be formed is in a continuous material pressing state in the forming process. The upper die male die insert interacts with the lower die insert 201 of the lower die holder 200 to complete the flanging process of the sheet material to be formed. The main function of the upper die unloading screw 103 is to limit the ejecting stroke of the upper die nitrogen spring 102, ensure the pressing time and the pressing stroke of the pressing plate to run according to the state set by the die, and simultaneously play the role of preventing the pressing plate from falling. The upper die holder 100 and the lower die holder 200 of the embodiment are combined, and the inner and outer material pressing and flanging process of the plate to be formed is completed through one stamping up-down stroke. The bottom wall of the female die cavity 202 is further provided with a plurality of limiting convex columns 207, and the bottom of the corresponding ejector 300 is also provided with a plurality of limiting grooves, so that the running stroke and the movement process of the ejector 300 are further accurately limited.

The spoke dish swage forming die of this embodiment presses material stamping forming, the dimensional accuracy of realization part that can be better still keeps certain stability simultaneously, compares traditional manual shape correcting and simple and easy frock shaping advantage obvious. The spoke plate pressing and forming die is not only applied to the thick plate material, but also applicable to the thin plate material, and simultaneously, good forming effect is also shown.

The embodiment also provides a spoke plate pressing and forming mechanism, which comprises the spoke plate pressing and forming die, and further comprises a machine tool ejector rod and a driving mechanism, wherein the machine tool ejector rod passes through the female die cavity 202 from bottom to top and is connected with the bottom of the ejector 300, and the driving end of the driving mechanism is connected with the upper die holder 100 and drives the upper die holder 100 to move up and down.

According to the spoke plate pressing forming mechanism, the uneven phenomenon of the flanging surface of the formed plate is greatly optimized, meanwhile, the forming insert is designed on the lower die base of the die by adjusting the newly-added pressing plate, the elastic pressing system is designed on the upper die, uninterrupted pressing in the forming process is met, flatness improvement of the pressing surface is ensured, and meanwhile, the problem of napping of the flange surface is also relieved.

The embodiment also provides a spoke plate pressing and forming process, which is realized by adopting the spoke plate pressing and forming mechanism and comprises the following steps: placing a plate to be formed on the ejector 300, driving the upper die holder 100 to move downwards by using a driving mechanism, enabling the upper die male die insert 101 and the pressing plate 400 on the upper die holder 100 to contact with the upper surface of the plate to be formed, enabling the upper die male die insert 101 to push the ejector 300 to move downwards in the female die cavity 202, enabling the pressing plate 400 to press the upper die nitrogen spring 102 upwards when the peripheral side edge of the plate to be formed is abutted against the upper end surface of the female die cavity 202, and clamping the peripheral side edge of the plate to be formed by the upper end surfaces of the pressing plate 400 and the female die cavity 202 under the action of the upper die nitrogen spring 102; the upper die punch insert 101 pushes the ejector 300 to continuously move downwards in the die cavity 202, so that the peripheral side edge of the plate to be molded is separated from the space between the pressing plate 400 and the upper end surface of the die cavity 202 and enters the die cavity 202 between the peripheral side wall of the ejector 300 and the inner side wall of the die cavity 202 for molding.

The plate to be formed in the embodiment generally adopts a circular structure, and anti-reflection holes and other process holes can be reserved in advance on the plate.

The embodiment adopts a material pressing flanging process, solves the quality problems that the flange edge of the traditional flanging process is uncontrolled in the forming process and the flanging surface is uneven easily. In the whole forming process, the flange edge is always in a pressed state, the material feeding of the flange edge is controllable, and a means for controlling the flanging gap is adopted. After the process of the embodiment is adopted, the uneven phenomenon of the flanging surface is greatly optimized, meanwhile, a lower die insert is designed for the lower die base of the die by adjusting a newly-added material pressing system, an elastic material pressing system is designed for the upper die base, uninterrupted material pressing in the forming process is met, and the problem of napping of the flange surface is also relieved while the flatness of the material pressing surface is improved.

In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present 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; can be mechanically or electrically connected; 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.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. The spoke plate pressing forming die is characterized by comprising an upper die holder, a lower die holder, a ejector and a pressing plate, wherein the ejector is placed in a concave die cavity of the lower die holder and can be driven to move up and down, an upper die male die insert which is arranged opposite to the ejector up and down is arranged on the lower surface of the upper die holder, and a plurality of upper die nitrogen springs and a plurality of upper die discharging screws are further arranged on the periphery of the upper die male die insert on the lower surface of the upper die holder;

2. The spoke plate pressing and forming die according to claim 1, wherein a first guide mechanism is arranged on the inner side wall of the die cavity, a second guide mechanism is arranged on the outer side wall of the ejector, and the ejector can move up and down and enter and exit the die cavity by matching the first guide mechanism with the second guide mechanism.

3. The spoke plate pressing and forming die according to claim 1, wherein a through hole for a machine tool ejector rod to pass through is formed in the bottom wall of the female die cavity.

4. The radius plate pressing mold according to claim 1, wherein the cavity is a cylindrical cavity.

5. The spoke plate pressing and forming die according to claim 1, wherein anti-reflection screws are arranged on the upper surface of the ejector, avoidance holes are formed in the upper die male die insert, and the avoidance holes are arranged corresponding to the anti-reflection screws.

6. The spoke plate pressing and forming die according to claim 1, wherein guide columns which are vertically arranged are arranged on the lower surface of the upper die holder, guide grooves are formed in the upper surface of the lower die holder, and the guide columns are inserted into the guide grooves in an adaptive manner to guide up-and-down movement between the upper die holder and the lower die holder.

7. The spoke plate pressing and forming die according to claim 1, wherein the limiting hole is a stepped hole with a large lower part and a small upper part, and a nut at the lower end of the upper die unloading screw is abutted against a step of the stepped hole;

8. The radius disc swage set forth in claim 1, wherein said upper punch insert and said ejector are both cylindrical in configuration and said upper punch insert and said ejector are the same diameter.

9. The spoke plate pressing and forming mechanism is characterized by comprising the spoke plate pressing and forming die as claimed in any one of claims 1 to 8, and further comprising a machine tool ejector rod and a driving mechanism, wherein the machine tool ejector rod penetrates through the female die cavity from bottom to top and is connected with the bottom of the ejector, and the driving end of the driving mechanism is connected with the upper die holder and drives the upper die holder to move up and down.