A punching and stretching integrated forming die for steel ring production

Abstract

The utility model discloses a punching and stretching integrated forming die for steel ring production, relates to the technical field of die processing, and aims to solve the problem that the existing stamping die structure is fixed and cannot meet various different die processing requirements; it comprises a press machine, an upper die seat is installed at the telescopic end of the press machine, and a stretching assembly is connected to the bottom surface of the upper die seat by bolts; a lower die seat is arranged below the stretching assembly, a chamber is arranged inside the lower die seat, and the chamber is connected to the outside through a sliding hole, the sliding hole is arranged in an annular array, and a top plate is slidably connected in the chamber, and a No. 1 die, a No. 2 die and lower dies of different specifications can be quickly replaced, so that the same press machine can process workpieces of different depths according to different processing requirements, reflecting the interchangeability and flexibility of the design scheme; one press machine can process workpieces of various specifications, reducing the frequency of replacing the press machine during the production process and improving production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of mold processing, in particular to a punching and stretching integrated molding mold for steel ring production. Background Art

[0002] In the stamping process of metal sheets, stretching is a commonly used processing method. In the process of stretching, in order to prevent the workpiece from wrinkling during deformation, which affects the appearance and performance, the mold needs to be designed with a press plate to prevent wrinkles during the stretching process.

[0003] Existing drawing dies usually have a fixed drawing depth, which makes it impossible for the same set of presses to process workpieces of different specifications. As a result, when workpieces of different specifications need to be processed, a "second set" of equipment needs to be prepared as a backup, which affects processing efficiency.

[0004] Therefore, the present application provides a punching and stretching one-piece forming die for steel ring production to meet the needs. Utility Model Content

[0005] The purpose of the present application is to provide a punching and stretching one-piece forming die for steel ring production, aiming to solve the problem that the existing stamping die structure is fixed and cannot meet a variety of different die processing requirements.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a punching and stretching integrated forming die for steel ring production, comprising a press, an upper die seat is installed at the telescopic end of the press, and a stretching assembly is connected to the bottom surface of the upper die seat by bolts;

[0007] A lower die seat is provided below the stretching assembly, a chamber is provided inside the lower die seat, and the chamber is connected to the outside through a sliding hole, the sliding holes are arranged in a ring array, a top plate is slidably connected in the chamber, and the top of the top plate protrudes from the lower die seat, a hydraulic cylinder is provided on the bottom surface of the top plate, and a lower die is detachably connected to the middle part of the lower die seat, and the lower die is adapted to the stretching assembly; a steel ring workpiece is slidably connected to the top surface of the lower die.

[0008] Preferably, the stretching assembly includes a No. 2 mold, the top surface of which is provided with a connecting groove, the upper mold base is connected to the connecting groove by bolts, and a stretching hole with a T-shaped cross-section is provided in the middle of the No. 2 mold, which is adapted to the lower mold.

[0009] Preferably, a No. 1 mold with an extended stretching hole is provided between the upper mold base and the No. 2 mold, and a through hole adapted to the bolt is provided on the No. 1 mold, and the bottom of the stretching hole of the No. 1 mold has the same diameter as the top of the stretching hole of the No. 2 mold. Through the cooperation of the No. 1 mold and the No. 2 mold, the same press can process workpieces of different depths according to different processing requirements.

[0010] Preferably, the cross section of the stretching hole of the first mold is a convex shape, which is matched with the lower mold to perform stretching processing on the steel ring workpiece.

[0011] Preferably, the top plate comprises a bottom plate, a connecting rod and a sleeve block. The bottom plate is slidably connected in the chamber, and the bottom surface of the bottom plate is connected to a reset member, which is a spring. A connecting rod is provided on the top surface of the bottom plate, and the connecting rod is slidably connected in the sliding hole, and a sleeve block is provided on the top surface of the connecting rod, which is an annular member. The lower mold is slidably connected to the inner ring of the sleeve block, and the inner diameter of the sleeve block is matched with the outer diameter of the lower mold.

[0012] Preferably, the middle of the lower mold and the upper mold base are provided with a positioning groove, and the root of the positioning groove is provided with a threaded section. A positioning bolt is threadedly connected in the positioning groove of the lower mold, and the positioning bolt is adapted to the positioning groove on the upper mold. Through the above structure, the positioning bolt installation can be switched according to whether the workpiece has a positioning hole. When punching is not required, the positioning bolt is in the positioning hole at the bottom, and when punching is required, it is in the positioning hole at the top. One set of positioning bolts can be installed and connected with both sets of positioning grooves.

[0013] In summary, the technical effects and advantages of the utility model are:

[0014] The utility model can quickly replace the No. 1 mold, the No. 2 mold and lower molds of different specifications, so that the same press can process workpieces of different depths according to different processing requirements, reflecting the interchangeability and flexibility of the design scheme; one press can process workpieces of various specifications, reducing the frequency of replacing the press in the production process and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the lower die base of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the upper die seat of the utility model;

[0020] Figure 5It is a schematic diagram of the cross-sectional structure of the top plate of the utility model.

[0021] In the figure: 1, upper die base; 2, die No. 1; 21, perforation; 3, die No. 2; 31, connecting groove; 4, lower die base; 41, chamber; 5, lower die; 6, steel ring workpiece; 7, top plate; 71, bottom plate; 72, connecting rod; 73, sleeve block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example: Reference Figure 1-5 The punching and stretching integrated forming die for steel ring production shown in the figure includes a press, an upper die base 1 is installed at the telescopic end of the press, a lower die base 4 is provided below the upper die base 1, a stretching assembly is connected to the bottom surface of the upper die base 1 by bolts, a No. 2 die 3 of the stretching assembly, a connecting groove 31 matched with the bolts is provided on the top surface of the No. 2 die 3, a chamber 41 is provided inside the lower die base 4, a sliding hole connected to the outside is provided on the inner top surface of the chamber 41, a top plate 7 is slidably connected in the chamber 41, the middle part of the top plate 7 is slidably connected in the sliding hole, the upper part of the top plate 7 is located above the lower die base 4, and a spring is provided on the bottom surface of the top plate 7; a lower die 5 matched with the upper die base 1 is provided in the middle part of the lower die base 4, a positioning bolt is provided in a ring array in the middle part of the lower die base 4, the positioning bolt and the lower die 5 are plugged in, so that the lower die 5 can be quickly replaced later, the cross section of the lower die 5 is a multi-section truncated cone, a T-shaped hole is provided in the middle part of the No. 2 die 3, and the two are slidably connected.

[0024] A positioning groove is provided in the middle of the upper die seat 1, and a positioning pin matched with the positioning groove is provided in the middle of the lower die 5. The two cooperate to position the workpiece placed on the lower die 5, thereby reducing the unqualified rate of processing.

[0025] The above-mentioned positioning bolt can change its position according to whether there is a hole or not in the middle of the steel ring workpiece 6; when there is a hole, the positioning bolt is screwed into the middle of the lower mold 5, and when there is no hole, it is screwed into the positioning groove in the middle of the upper mold base 1, and the positioning bolt is only provided with threads at the bottom, and its matching groove is also only provided with threads at its root, so as to avoid the positioning bolt from touching the threads during use.

[0026] In order to adapt to the stretching requirements of a variety of different workpieces, a mold No. 1 2 is superimposed between the mold No. 2 3 and the upper mold base 1. The mold No. 1 2 is provided with a through hole 21 corresponding to the position of the connecting groove 31. The bolt passes through the through hole 21 and the connecting groove 31 for threaded connection to achieve the "replacement" of the entire upper mold. A convex hole is provided in the middle of the mold No. 1 2, and its maximum diameter is matched with the minimum diameter of the T-shaped hole. The combination of the two is matched with the lower mold 5. After the steel ring workpiece 6 is placed on the top surface of the lower mold 5 and the top plate 7, it is processed.

[0027] Top plate: The bottom plate 71 is slidably connected in the chamber 41, and a connecting rod 72 is provided above the bottom plate 71. The connecting rod 72 is slidably connected in the sliding hole. An annular sleeve block 73 is provided on the top surface of the connecting rod 72. The sleeve block 73 is adapted to the lower mold 5. After processing is completed, a spring is provided at the bottom of the bottom plate 71, and the formed workpiece is ejected during its reset process.

[0028] The working principle of the utility model is as follows: the workpiece is placed on the top surface of the top plate 7 and the lower mold 5, and the hole in the middle of the steel ring workpiece 6 is aligned with the positioning pin to complete the positioning, and then the press is started to drive the upper mold base 1 to rise and fall, so that the No. 1 mold 2 and the No. 2 mold 3 are pressed down, and after resisting the steel ring workpiece 6, the steel ring workpiece 6 is stretched by cooperating with the lower mold 5 through the holes on the No. 1 mold 2 and the No. 2 mold 3, and then in the process of pressing down, the sleeve block 73 moves downward, driving the connecting rod 72 to slide in the sliding hole, and causing the bottom plate 71 to squeeze the spring at the bottom; when the processing is completed, the press is reset, the spring rebounds, the top plate 7 is reset, and the formed workpiece is ejected to complete the processing.

[0029] When it is necessary to process steel ring workpieces 6 of different specifications, the No. 1 mold 2 between the No. 2 mold 3 and the upper mold base 1 is removed by loosening the bolts; at the same time, the lower mold 5 is replaced, and then the No. 2 mold 3 is re-fixed with bolts, and then the replaced lower mold 5 is matched with each other to realize the processing of workpieces of new specifications.

[0030] According to processing requirements, the positioning groove on the upper die base 1 and the positioning bolt on the lower die 5 can be exchanged. When there is a hole in the middle of the steel ring workpiece 6, the positioning bolt is screwed on the lower die 5. When there is no hole, it is screwed into the positioning groove of the upper die base 1.

[0031] The electromechanical connection involved in the present utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.

[0032] Components not described in detail herein are prior art.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A punching and stretching integrated forming die for steel ring production, comprising a press, characterized in that: An upper die seat (1) is installed at the telescopic end of the press, and a stretching assembly is connected to the bottom surface of the upper die seat (1) via bolts; A lower die base (4) is provided below the stretching assembly, a chamber (41) is provided inside the lower die base (4), and the chamber (41) is connected to the outside through a sliding hole, the sliding holes are arranged in a ring array, a top plate (7) is slidably connected inside the chamber (41), and the top of the top plate (7) protrudes from the lower die base (4), a hydraulic cylinder is provided on the bottom surface of the top plate (7), a lower die (5) is detachably connected to the middle of the lower die base (4), and the lower die (5) is adapted to the stretching assembly; The top surface of the lower mold (5) is slidably connected to a steel ring workpiece (6).

2. The punching and stretching integrated forming die for steel ring production according to claim 1, characterized in that: The stretching assembly comprises a second die (3), the top surface of the second die (3) being provided with a connection groove (31), the upper die seat (1) being connected to the connection groove (31) via bolts, and a stretching hole with a T-shaped cross section being provided in the middle of the second die (3), the stretching hole being adapted to fit the lower die (5).

3. The punching and stretching integrated forming die for steel ring production according to claim 2, characterized in that: A No. 1 mold (2) with an extended stretching hole is provided between the upper mold base (1) and the No. 2 mold (3), and a through hole (21) adapted to the bolt is provided on the No. 1 mold (2), and the bottom of the stretching hole of the No. 1 mold (2) has the same diameter as the top of the stretching hole of the No. 2 mold (3).

4. The punching and stretching integrated forming die for steel ring production according to claim 3, characterized in that: The cross section of the stretching hole of the No. 1 mold (2) is in a convex shape.

5. The punching and stretching integrated forming die for steel ring production according to claim 1, characterized in that: The top plate member (7) comprises a bottom plate (71), a connecting rod (72), and a sleeve block (73); the bottom plate (71) is slidably connected in the chamber (41), and the bottom surface of the bottom plate (71) is connected to the telescopic end of the hydraulic cylinder; the top surface of the bottom plate (71) is provided with the connecting rod (72), and the connecting rod (72) is slidably connected in the sliding hole, and the top surface of the connecting rod (72) is provided with the sleeve block (73); the sleeve block (73) is an annular member; the lower mold (5) is slidably connected to the inner ring of the sleeve block (73), and the inner diameter of the sleeve block (73) is matched with the outer diameter of the lower mold (5).

6. The punching and stretching integrated forming die for steel ring production according to claim 1, characterized in that: The middle parts of the lower mold (5) and the upper mold base (1) are both provided with positioning grooves, the roots of which are provided with threaded sections, and a positioning bolt is threadedly connected in the positioning groove of the lower mold (5), and the positioning bolt is adapted to fit the positioning groove on the upper mold base (1).

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