Sliding type exhalation valve sheet composite punching die

Abstract

The utility model discloses a sliding type exhalation valve sheet composite punching die which comprises an upper die and a lower die, the lower die comprises a base cushion plate, a sliding block seat plate is connected to the base cushion plate, a limiting screw is arranged on the sliding block seat plate, a sliding block is arranged on the top face of the sliding block seat plate, and the sliding block is connected with the sliding block seat plate in a sliding mode through a dovetail type clamping groove. Polyurethane base plates are arranged at the tops of the sliding blocks; the upper die comprises a die handle, a cover plate connected with the die handle, a fixed seat connected with the cover plate through a fixing screw and a supporting plate, the supporting plate is located between the cover plate and the fixed seat, the upper die further comprises a middle stamping knife, an outer stamping knife and an inner stamping knife which are connected to the bottom of the fixed seat, and the middle stamping knife is located between the outer stamping knife and the inner stamping knife. According to the composite punching die for the sliding type exhalation valve piece, the punching part of the upper half portion is the composite punching knife formed by combining the three punching knives, two products of different specifications can be punched in the one-time punching process, and compared with a traditional composite punching die, the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stamping dies, and particularly relates to a sliding type exhalation valve sheet composite punching die. Background Art

[0002] The exhalation valve sheet is an important component widely used in gas masks, which plays the role of one-way ventilation. Its manufacturing process requires first a vulcanization process to form a sheet of raw materials, and then a punching process to obtain the exhalation valve sheet product of the required size. However, the traditional exhalation valve sheet punching die can only punch products of a certain size, and cannot produce products of different sizes and cannot meet the growing production demand. At the same time, the bottom of the traditional punching die is fixed, and after each punching, the waste sheet needs to be manually replaced with a new raw material sheet, which is cumbersome and inconvenient.

[0003] Therefore, the utility model optimizes the design based on the traditional punching die and proposes a sliding exhalation valve sheet composite punching die structure. The composite punch can punch two different sizes of exhalation valve sheets at one time and has a slidable base mechanism. Utility Model Content

[0004] The utility model aims to address the deficiencies of the prior art and proposes a sliding exhalation valve sheet composite punching die, which can punch two exhalation valve sheets of different sizes at the same time and has a dovetail groove sliding mechanism, which can realize continuous punching multiple times after one loading and then change the material.

[0005] The technical purpose of this utility model is achieved through the following technical solutions:

[0006] A sliding exhalation valve plate composite punching die comprises an upper die and a lower die, the lower die comprises a base pad, the base pad is connected to a slider seat plate, a limiting screw is arranged on the slider seat plate, a slider is arranged on the top surface of the slider seat plate, the slider and the slider seat plate are slidably connected through a dovetail slot, and a polyurethane pad is arranged on the top of the slider; the upper die comprises a die handle, a cover plate connected to the die handle, a fixed seat connected to the cover plate through fixing screws, and a support plate, the support plate is located between the cover plate and the fixed seat, and also comprises a middle punch, an outer punch and an inner punch connected to the bottom of the fixed seat, the middle punch is located between the outer punch and the inner punch.

[0007] Preferably, a groove is further provided at the bottom of the slider, a set screw is provided in the slider seat plate, a spring is provided on the set screw, a limiting steel ball is fixedly connected to the top of the spring, and the limiting steel ball abuts against the groove.

[0008] Preferably, the mold handle cover plate is detachably connected.

[0009] Preferably, a sink groove is provided on the top surface of the sliding block, and the polyurethane pad is installed in the sink groove.

[0010] Preferably, a pull-out handle is also welded on the slide block.

[0011] Preferably, the inner punch, the middle punch, the outer punch and the fixing seat are formed into a composite punch by interference fit.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model provides a sliding exhalation valve sheet composite punching die. The punching part of the upper half of the device is a composite punching knife composed of three punching knives. Two products of different specifications can be punched in one punching process, which improves production efficiency compared with the traditional one. The lower half of the device adopts a slider mechanism. After completing one punching, it can slide to the unpunched part of the raw material for the next punching. In addition, the elastic limiting mechanism is composed of a limiting steel ball, a spring, a set screw and a groove at the bottom of the slider to ensure that the slider can slide to the specified position during the sliding process. A piece of raw material can be punched multiple times after one loading and then replaced. Compared with the previous method of re-loading and processing waste materials after punching once, the operation of this device is more convenient and quick, reducing the time waste caused by loading, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model before mold closing.

[0015] Figure 2 The figure is a schematic diagram of the top view of the structure of one embodiment of the utility model after mold closing.

[0016] In the above drawings:

[0017] 1. Base plate; 2. Slider seat plate; 3. Limit screw; 4. Slider; 5. Polyurethane plate; 6. Middle punch; 7. Outer punch; 8. Fixed seat; 9. Support plate; 10. Cover plate; 11. Fixing screw; 12. Die handle; 13. Set screw; 14. Spring; 15. Inner punch; 16. Pull handle; 17. Limiting steel ball. DETAILED DESCRIPTION

[0018] 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.

[0019] As a preferred embodiment of a sliding exhalation valve sheet composite punching die of the utility model, Figure 1 and Figure 2As shown, this embodiment provides a sliding exhalation valve sheet composite punching die, including an upper die and a lower die, the lower die including a base pad 1, the base pad 1 is connected to a slider seat plate 2, the slider seat plate 2 is provided with a limiting screw 3, a slider 4 is provided on the top surface of the slider seat plate 2, the slider 4 is slidably connected to the slider seat plate 2 through a dovetail groove, and a polyurethane pad 5 is provided on the top of the slider 4; the upper die includes a die handle 12, a cover plate 10 connected to the die handle 12, and a fixed seat 8 connected to the cover plate 10 through a fixing screw 11, and a support plate 9, the support plate 9 is located between the cover plate 10 and the fixed seat 8, and also includes a middle punch 6, an outer punch 7 and an inner punch 15 connected to the bottom of the fixed seat 8, and the middle punch 6 is located between the outer punch 7 and the inner punch 15.

[0020] In some embodiments, in order to quickly adjust the next stamping station, improve the stamping efficiency, and reduce the auxiliary time, this embodiment also provides a groove at the bottom of the slider 4, and a locking screw 13 is provided in the slider seat plate 2. A spring 14 is provided on the locking screw 13. A limiting steel ball 17 is fixedly connected to the top of the spring 14, and the limiting steel ball 17 abuts against the groove. In this way, after stamping once, the relative position of the punching sheet and the compound punching knife can be quickly adjusted by quickly pulling the pull handle 16, thereby realizing secondary stamping.

[0021] In some embodiments, in order to facilitate maintenance and replacement of spare parts, the mold handle 12 and cover plate 10 are detachably connected in this embodiment.

[0022] In some preferred embodiments, in order to improve the stability of the stamping process and prevent the polyurethane pad 5 from sliding on the slider 4 and affecting the stamping accuracy, a groove is provided on the top surface of the slider 4 in this embodiment, and the polyurethane pad 5 is installed in the groove.

[0023] In some preferred embodiments, in order to facilitate overall control and complete the stamping process quickly and efficiently, the inner punch 15, the middle punch 6, the outer punch 7 and the fixed seat 8 in this embodiment form a composite punch through interference fit.

[0024] In some preferred embodiments, in order to facilitate operation, a pull-out handle 16 is welded on the slide block 4 in this embodiment.

[0025] like Figure 1 As shown, the mold structure of the utility model is to cut the raw material into corresponding sizes and place it on the polyurethane pad 5, and press the composite punch blade of the upper mold down onto the polyurethane plate 5 under the pressure of the punch press to complete the punching process.

[0026] like Figure 2As shown, after the mold of the utility model completes one punching, the pull-out handle 16 is pulled to make the slider 4 slide relative to the slider seat plate 2, and slide to the next limit point under the action of the elastic limit mechanism composed of the limit steel ball 17, the spring 14 and the set screw 13. At this time, the raw material on the polyurethane pad 5 also slides to the unpunched part with the slider. At this time, the punching process is repeated to complete the next punching. The above steps are repeated until all the raw materials are punched. After the waste on the polyurethane plate 5 is removed, new raw materials are replaced, and finally the slider 4 is pushed back to the initial position to prepare for the next operation.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A composite punching die for a sliding exhalation valve sheet, comprising an upper die and a lower die, characterized in that: The lower die comprises a base pad (1), the base pad (1) is connected to a slider seat plate (2), a limit screw (3) is arranged on the slider seat plate (2), a slider (4) is arranged on the top surface of the slider seat plate (2), the slider (4) and the slider seat plate (2) are slidably connected via a dovetail slot, and a polyurethane pad (5) is arranged on the top of the slider (4); the upper die comprises a die handle (12), a cover plate (10) connected to the die handle (12), a fixing seat (8) connected to the cover plate (10) via fixing screws (11), and a support plate (9), the support plate (9) is located between the cover plate (10) and the fixing seat (8), and also comprises a middle punch (6), an outer punch (7) and an inner punch (15) connected to the bottom of the fixing seat (8), the middle punch (6) is located between the outer punch (7) and the inner punch (15).

2. A composite punching die for a sliding exhalation valve sheet according to claim 1, characterized in that: A groove is also provided at the bottom of the slider (4), a set screw (13) is provided in the slider seat plate (2), a spring (14) is provided on the set screw (13), a limiting steel ball (17) is fixedly connected to the top of the spring (14), and the limiting steel ball (17) abuts against the groove.

3. A composite punching die for a sliding exhalation valve sheet according to claim 1, characterized in that: The mold handle (12) and the cover plate (10) are detachably connected.

4. A composite punching die for a sliding exhalation valve sheet according to claim 1, characterized in that: A sink groove is provided on the top surface of the sliding block (4), and a polyurethane pad (5) is installed in the sink groove.

5. The sliding exhalation valve composite punching die according to claim 1, characterized in that: A pull handle (16) is also welded to the slide block (4).

6. The sliding exhalation valve composite punching die according to claim 1, characterized in that: The inner punching knife (15), the middle punching knife (6), the outer punching knife (7) and the fixing seat (8) form a composite punching knife through interference fit.

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