Crown bottle cap stamping equipment capable of rapidly switching between medium cap and standard cap

Abstract

The utility model relates to the technical field of crown bottle cap production, in particular to crown bottle cap stamping equipment capable of rapidly switching between a medium cap and a standard cap, which is provided with two sets of replaceable stamping shear upper dies, stamping shear female dies and forming dies and two sets of cover turning device components on the basis of the existing equipment, the cutting size, the cover shape and the cover height of a standard cover and a medium cover are respectively adapted; furthermore, two sets of upper templates, middle templates and lower templates, and two sets of stepping box assemblies and gear parts are arranged to adapt to the typesetting layout of standard covers and medium covers and the stepping length of the plates respectively. The utility model provides two production schemes which can be quickly switched and are high in operability, production of two cap shapes can be realized on one set of equipment, flexible switching between medium cap production and standard cap production is realized by utilizing an original crown cap production line, the utilization rate of the equipment is improved, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of crown cap production, in particular to a crown cap stamping device for quickly switching between medium caps and standard caps. Background Technique

[0002] Most of the domestic crown caps are standard caps with a blanking diameter of φ38mm and a height of 6.55mm. This cap shape is the mainstream product in China. At present, most domestic bottle cap factories produce such crown caps, and the stamping equipment is also special equipment for such cap shapes.

[0003] In the international market, medium caps are the mainstream products. The medium cap has a blanking diameter of φ37.10mm and a height of 5.97mm. Except for the different heights, most other parameters of the two cap types, such as the inner diameter of the cap, the outer diameter of the cap, the number of teeth, the radius of the cap top, etc., are the same. The medium cap and the standard cap have the same function and the same sealing performance, but the medium cap saves more materials and is lighter. Under the same sheet thickness, the amount of tinplate material used for each medium cap is reduced by 4.68% compared with the standard cap, and the number of caps produced per ton is more, which is more advantageous. It can save the production cost of enterprises and improve the competitiveness of enterprises.

[0004] At present, if an enterprise needs to produce medium crown caps, the general method is to purchase a punching press dedicated to producing medium caps to achieve the production of medium caps. This method of producing medium caps has a large equipment investment, occupies a large area, has a high production cost, and the equipment product variety is single; another method is that the manufacturer needs to provide spare parts and technical support to transform the equipment into a medium cap punching press. However, once the product specifications are changed, basically only one cap shape specification can be produced in the future. When facing the needs of customers for multiple cap types, such a method has a high cost, is very inflexible, and the production operation will be more troublesome.

[0005] At present, there is no good way to solve the above problems in China. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a crown cap stamping device for quickly switching between medium caps and standard caps. Two parts with different specifications are equipped for the whole machine part structure, and parts that can be adjusted in specifications are set. The two punching machines can be mutually converted back and forth by quickly replacing or adjusting some parts, so that a punching machine can produce crown caps of two different cap shapes, namely standard caps and medium caps.

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] A crown bottle cap stamping device for rapid switching between medium caps and standard caps, comprising a molding machine, a screening machine, an electromagnetic lifter, a storage tower, a horizontal conveyor, a molding machine and an air-cooled conveyor; the molding machine is provided with a stamping machine die component, and the stamping machine die component includes an upper template, a middle template and a lower template. The middle template is provided with a plurality of die positions, and each die position is provided with a punching and shearing upper die; the lower template is provided with a plurality of die positions, and each die position is provided with a forming die and a punching and shearing female die; the molding machine is provided with a turntable, and the turntable is provided with a flip cover component and a conveying channel;

[0009] In order to facilitate the rapid switching between the production of medium caps and standard caps, there are two sets of replaceable punching and shearing upper dies, punching and shearing female dies and forming dies, one set adapted to the blanking size of standard caps and the other set adapted to the blanking size of medium caps; there are two sets of replaceable flip cover components, and the two sets of flip cover components include upper and lower guide bars, exit guide bars, inlet semi-circular blocks and flip covers, which respectively adapt to the cap height and cap type of standard caps and medium caps; the conveying channel is provided with adjustment pads for increasing or decreasing adjustment according to the height of standard caps and medium caps.

[0010] Furthermore, the present utility model also provides the following technical solutions:

[0011] A crown bottle cap stamping device for rapid switching between medium caps and standard caps, comprising a molding machine, a screening machine, an electromagnetic lifter, a storage tower, a horizontal conveyor, a molding machine and an air-cooled conveyor; the molding machine is provided with a stamping machine die component, and the stamping machine die component includes an upper template, a middle template and a lower template. The middle template is provided with a plurality of die positions, and each die position is provided with a punching and shearing upper die; the lower template is provided with a plurality of die positions, and each die position is provided with a forming die and a punching and shearing female die; the molding machine is provided with a turntable, and the turntable is provided with a flip cover component and a conveying channel; the molding machine is provided with a stepping box component and a gear component, and the stepping box component includes a fast cam, a step-by-step disc and a slow cam;

[0012] In order to facilitate the rapid switching between the production of medium caps and standard caps and save sheet materials at the same time, there are two sets of replaceable punching and shearing upper dies, punching and shearing female dies and forming dies, one set adapted to the blanking size of standard caps and the other set adapted to the blanking size of medium caps; there are two sets of replaceable flip cover components, and the two sets of flip cover components include upper and lower guide bars, exit guide bars, inlet semi-circular blocks and flip covers, which respectively adapt to the cap height and cap type of standard caps and medium caps; the conveying channel is provided with adjustment pads for increasing or decreasing adjustment according to the height of standard caps and medium caps; there are two sets of replaceable upper templates, middle templates and lower templates, which respectively adapt to the bottle cap layout diagrams of standard caps and medium caps; there are two sets of replaceable stepping box components and gear components, which respectively adapt to the sheet material stepping lengths of the standard cap and medium cap layout layouts.

[0013] In the above solutions, for the two sets of the upper templates, the middle templates, and the lower templates, one set has a margin width of 0.40 mm between each two die positions, which is suitable for the bottle cap layout of standard caps; the other set has a margin width of 1.30 mm between each two die positions, which is suitable for the bottle cap layout of medium caps.

[0014] In the above two solutions, the adjusting pads are arranged at the bottle cap inlet and the bottle cap outlet of the conveying channel.

[0015] In the above two solutions, for the two sets of the punching and shearing upper dies, the punching and shearing female dies, and the forming dies, one set has a blanking size of φ38 mm, which is suitable for standard caps, and the other set has a blanking size of φ37.10 mm, which is suitable for medium caps.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. Provide two production solutions that can be quickly switched and have strong operability, which can realize the production of two types of caps on one stamping machine to meet different customer needs;

[0018] 2. Utilize the original crown cap production line to achieve flexible switching between the production of medium caps and standard caps. After switching, the production efficiency and the finished product rate of medium caps can both reach the same level as that of current standard caps;

[0019] 3. In view of the current common phenomenon of overcapacity in the crown cap production line, implementing the present utility model can make full use of the idle production capacity of the equipment, improve the equipment utilization rate of the crown cap production line, and reduce the production cost of the enterprise;

[0020] 4. For enterprises with existing crown cap production lines, increasing the production capacity of medium crown caps can enrich the product series of crown caps and improve the competitiveness of the enterprise; moreover, medium caps are lighter in weight, which can save production costs, increase customer orders for medium caps, and can strive for opportunities to explore the international market. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view schematic diagram of the overall composition of the crown bottle cap stamping equipment;

[0022] Figure 2 It is a schematic diagram of the structure of a standard cap;

[0023] Figure 3 It is a schematic diagram of the structure of a medium cap;

[0024] Figure 4 It is a side view of the forming machine, the screening machine, the electromagnetic lifter, and the storage tower parts of the crown bottle cap stamping equipment;

[0025] Figure 5 It is a side view of the position of the die parts of the forming machine;

[0026] Figure 6 Schematic structural diagram of the middle template die component in a molding machine;

[0027] Figure 7 Schematic structural diagram of the lower template die component in a molding machine;

[0028] Figure 8 Schematic structural diagram of the turntable in a molding machine;

[0029] Figure 9 Schematic structural diagram of the flipper assembly in the turntable;

[0030] Figure 10 Schematic structural diagram of the conveying channel in the turntable;

[0031] Figure 11 Schematic cross-sectional view of the conveying channel;

[0032] Figure 12 For Figure 5 E - E sectional view of the stepping box assembly in

[0033] Explanation of reference numerals: 1. Adjusting sleeve; 2. Upper punching and shearing die; 3. Forming die; 4. Punching and shearing female die; 5. Lower template; 6. Middle template; 7. Press die component; 8. Gear component; 10. Upper template; 11. Upper and lower guiding bars; 12. Outlet guiding bar; 13. Inlet semi-circular block; 14. Flap; 21. Bottom plate; 22. Cover plate; 23. Adjusting pad; 30. Stepping box assembly; 30 - 1. Quick step cam; 30 - 2. Step-by-step disk; 30 - 3. Slow step cam; 41. Flipper assembly; 42. Conveying channel; 61. Molding machine; 62. Screening machine; 63. Electromagnetic hoist; 64. Storage tower; 65. Horizontal conveyor; 66. Molding machine; 66 - 1. Turntable; 67. Air-cooled conveyor. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] The overall composition of the crown cap stamping equipment can be referred to in Chinese Patent CN201610539081 "A Crown Cap Forming Process and Its High-Speed Production Equipment". As Figure 1As shown in the figure, the crown cap stamping equipment includes a molding machine 61, a screening machine 62, an electromagnetic lifter 63, a storage tower 64, a horizontal conveyor 65, a molding machine 66 and an air-cooled conveyor 67. The molding machine 61 is connected to the screening machine 62 through a feeding mechanism. The screening machine 62 is connected to the horizontal conveyor 65 through the electromagnetic lifter 63. Both ends of the horizontal conveyor 65 are respectively connected to the storage tower 64 and the molding machine 66. An air-cooled conveyor 67 is connected to the molding machine 66. A cap outlet is provided on the air-cooled conveyor 67. Both ends of the discharge port of the horizontal conveyor 65 are respectively connected to two molding machines 66. Each molding machine 66 is connected to an air-cooled conveyor 67. The functions of each device are as follows: The molding machine 61 punches the cap shell. The screening machine 62 conveys the qualified caps to the electromagnetic lifter 63 to screen out the deformed flat caps and the corner scraps and discharge them. The electromagnetic lifter 63 lifts the caps to a certain height and makes them flow into the cap inlet of the molding machine 66. The storage tower 64 functions to temporarily store the caps for standby. The horizontal conveyor 65 diverts the caps to the two molding machines 66. The molding machine 66 installs the PVC / PE sealing gaskets on the caps. The air-cooled conveyor 67 cools the crown caps to room temperature.

[0036] The present utility model is an improvement based on the above-mentioned crown cap stamping equipment.

[0037] As Figure 2 、 Figure 3 shown, they are respectively the structural schematic diagrams of the standard cap and the medium cap of the crown cap.

[0038] The following are the comparison parameter indicators of the standard cap and the medium cap;

[0039]

[0040] From the above table and Figure 2 、 Figure 3 it can be seen that except for the different heights of the two cap types, most of the other parameters, such as the inner diameter of the cap, the outer diameter of the cap, the number of teeth, the radius of the cap top, etc., are the same. This makes it possible for the present utility model to produce two different specifications of crown caps on the same crown cap stamping machine by switching some parts.

[0041] The improvement of the present utility model on the crown cap stamping equipment involves some parts, which will be introduced below with reference to the accompanying drawings.

[0042] As Figure 4 shown, it is the side view of the molding machine 61, the screening machine 62, the electromagnetic lifter 63, and the storage tower 64 of the crown cap stamping equipment in Figure 1 . The molding machine 61 is provided with a stamping die component 7, a gear component 8 and a step plate 30-2 at the position shown in the figure. The stamping die component 7, the gear component 8 and the step plate 30-2 cooperate to complete the crown cap stamping and forming action.

[0043] Combined withFigures 5 - 7 As shown in the figure, the stamping die component 7 includes an upper template 10, a middle template 6, and a lower template 5. The middle template 6 is provided with a plurality of die positions, and each die position is provided with a punching and shearing upper die 2; the lower template 5 is provided with a plurality of die positions, and each die position is provided with a forming die 3 and a punching and shearing female die 4. An adjusting sleeve 1 is also provided in the middle template 6. The upper template 10, the middle template 6, and the lower template 5 are provided with die positions according to the sheet metal size and the layout drawing, and cooperate to complete the punching and forming of the crown cap. Each die position punches once to form one crown cap.

[0044] As Figure 8 shown, the turntable 66-1 in the molding machine is provided with a capping component 41 and a conveying channel 42, which are used to convey the crown caps formed by the molding machine and perform the capping action, so as to carry out the subsequent step of installing the sealing gasket.

[0045] As Figure 9 shown, the figure shows the structure of the capping component. The middle figure is the sectional view of the capping component, the left figure is the sectional view B-B of the middle figure, and the right figure is the sectional view A-A of the middle figure; the capping component 41 is provided with upper and lower guide bars 11, an outlet guide bar 12, an inlet semi-circular block 13, and a capping 14 at the shown position, and these parts cooperate to complete the capping action of the crown cap. The above components of the capping component 41 need to adapt to the size of the crown cap.

[0046] As Figures 10 - 11 shown, the conveying channel 42 includes a bottom plate 21 and a cover plate 22. In order to realize the quick switching between medium caps and standard caps in the present invention, an adjusting pad 23 is also provided. The conveying channel 42 needs to adapt to the size of the conveyed crown caps.

[0047] As Figure 12 shown, it is Figure 5 the sectional view E-E of the stepping box component 30 in the figure. It can be seen that the stepping box component 30 includes a quick cam 30-1, a step-by-step disk 30-2, and a slow cam 30-3. The quick cam 30-1, the step-by-step disk 30-2, and the slow cam 30-3 cooperate to control the stamping rhythm of the stamping machine, and their size structures need to adapt to the feeding step length.

[0048] The present invention provides two implementation manners for realizing the quick switching between medium caps and standard caps:

[0049] Embodiment 1: Refer to Figures 1 - 11, Crown cap stamping equipment, including a forming machine 61, a screening machine 62, an electromagnetic lifter 63, a storage tower 64, a horizontal conveyor 65, a molding machine 66 and an air-cooled conveyor 67; the forming machine 61 is provided with a stamping machine die component 7, and the stamping machine die component 7 includes an upper template 10, a middle template 6 and a lower template 5. The middle template 6 is provided with a plurality of die positions, and each die position is provided with a punching and shearing upper die 2; the lower template 5 is provided with a plurality of die positions, and each die position is provided with a forming die 3 and a punching and shearing female die 4; the molding machine 66 is provided with a turntable 66-1, and the turntable 66-1 is provided with a flip cover component 41 and a conveying channel 42;

[0050] The solution to solve the problem of rapid switching in this embodiment is to provide two sets of replaceable punching and shearing upper dies 2, punching and shearing female dies 4 and forming dies 3. One set is adapted to the blanking size of standard caps, and the other set is adapted to the blanking size of medium caps; two sets of replaceable flip cover components 41 are provided, and the upper and lower guide bars 11, the outlet guide bar 12, the inlet semi-circular block 13 and the flip cover 14 of the two sets of flip cover components 41 respectively adapt to the cap height and cap type of standard caps and medium caps; the conveying channel 42 is provided with an adjusting pad 23 for increasing or decreasing adjustment according to the height of standard caps and medium caps.

[0051] In the above implementation, the original crown cap stamping equipment is modified in three aspects: First, the part of the punching press is modified. The original equipment is for standard caps with a blanking size of φ38mm. The punching and shearing upper die 2, punching and shearing female die 4 and forming die 3 with a blanking size of φ37.10mm are newly processed for medium caps. Since the biggest difference between medium caps and standard caps is the different blanking diameters, when producing medium caps or standard caps, the installation positions of the above three kinds of parts are in the same position, and the dimensions of the installation positions are also the same. The difference between the two specifications of parts is that the position dimensions of the shearing surface or forming surface are slightly different, and the outer diameters of the two differ by 38 - 37.1 = 0.9mm. Because the installation positions and dimensions are the same, when switching production between medium caps and standard caps, it is only necessary to switch the punching and shearing upper die, punching and shearing female die and forming die. If it is necessary to restore, just replace it with another specification of parts to produce the corresponding specification of crown caps, which is very convenient.

[0052] Second, the flip cover of the molding machine is changed. Since the cap heights and skirt angles of the standard caps and medium caps produced by the punching press are different, in order to ensure smooth conveying and quick cap sorting, the inlet size of the flip cover needs to be adjusted according to the change of the cap height, and the outlet size is adjusted for the same reason. Also, the flip cover guide block parts inside the flip cover need to be adjusted according to the cap height and cap type. For the sake of quick switching, a set of flip cover components adapted to medium caps is processed, and the whole flip cover component can be replaced when needed.

[0053] Third, adjust the conveying channel. See Figure 10, which is one of the channels for bottle cap transportation. The adjustment methods of other channels are similar to the following adjustment methods. The transportation channel is composed of a bottom plate 21, a cover plate 22, an adjustment pad 23 and a lift cover. Because the cap heights of standard caps and medium caps are different, the channel of the same height cannot adapt to the rapid transportation of the two caps. The channel in the figure is provided with an adjustment pad 23. By increasing or decreasing the adjustment pad according to the height of the bottle caps, it can adapt to the transportation of the two caps respectively.

[0054] By replacing and adjusting the above-mentioned parts of the punch press, the original crown cap punching equipment can produce medium caps that meet the standard requirements. When it is necessary to produce standard caps, the corresponding parts can be replaced to resume the production of standard caps.

[0055] Example 2: See Figures 1 - 12 , Crown bottle cap stamping equipment, including a forming machine 61, a screening machine 62, an electromagnetic lifting machine 63, a storage tower 64, a horizontal conveyor 65, a molding machine 66 and an air-cooled conveyor 67; the forming machine 61 is provided with a stamping machine mold component 7, the stamping machine mold component 7 includes an upper template 10, a middle template 6, and a lower template 5, the middle template 6 is provided with a plurality of mold positions, each of which is provided with a punching and shearing upper mold 2; the lower template 5 is provided with a plurality of mold positions, each of which is provided with a forming mold 3 and a punching and shearing female mold 4; the molding machine 66 is provided with a rotary disk 66-1, and the rotary disk 66-1 is provided with a flip cover assembly 41 and a conveying channel 42; the forming machine 61 is provided with a stepping box assembly 30 and a gear component 8, and the stepping box assembly 30 includes a fast-step cam 30-1, a stepping disk 30-2, and a slow-step cam 30-3;

[0056] The solution to the problem of rapid switching in this embodiment is that two sets of replaceable punching and shearing upper dies 2, punching and shearing female dies 4 and forming dies 3 are provided, one set is adapted to the cutting size of the standard cover, and the other set is adapted to the cutting size of the medium cover; two sets of replaceable flip cover assemblies 41 are provided, and the upper and lower guide bars 11, outlet guide bars 12, inlet semicircular blocks 13, and flip covers 14 of the two sets of flip cover assemblies 41 are adapted to the cover height and cover type of the standard cover and the medium cover respectively; the conveying channel 42 is provided with an adjustment pad 23 for increasing or decreasing the adjustment according to the height of the standard cover and the medium cover; two sets of replaceable upper templates 10, middle templates 6 and lower templates 5 are provided, which are adapted to the bottle cap layout drawings of the standard cover and the medium cover respectively; two sets of replaceable stepping box assemblies 30 and gear components 8 are provided, which are adapted to the sheet material stepping length of the layout layout of the standard cover and the medium cover respectively.

[0057] For the above implementation, first, three aspects of the transformation of the original crown cap stamping equipment need to be carried out in Embodiment 1, namely: replacing the punching and shearing upper die 2, the forming die 3, and the punching and shearing female die 4 during production switching to change the blanking size and adapt to the changed cap shape; replacing the flipper assembly 41 to adapt to the cap height and cap shape; and adjusting the conveying channel to adapt to the cap height. Then, it is also necessary to further change the printed sheet size and the layout size, changing the sheet size and the stepping length: switching the upper, middle, and lower three templates (the upper template 10, the middle template 6, and the lower template 5), and replacing the entire set of templates (actually including the lower template 5, the middle template 6, the upper template 10, the punching and shearing upper die 2, the forming die 3, and the punching and shearing female die 4 as a whole), that is, pushing out and replacing the stamping die component 7 as a whole, so as to quickly adapt to the new cap shape of the stamping machine and the iron sheet with re-typeset. Due to the change in typesetting, the feeding step length also changes, and it is also necessary to replace the driving parts of the stepping feeding mechanism, namely the fast step cam 30-1, the step-by-step disk 30-2, the slow step cam 30-3, and the gear component 8, to adapt to the new stepping length of the sheet due to the changed layout.

[0058] Comparison of the two implementation methods:

[0059] In the first implementation method, by changing the blanking size without changing the printed sheet size and the layout drawing, medium caps can be produced. The overlap width of the waste screen of the stamping machine between every two die positions increases from 0.40 mm to 1.30 mm, and the output per ton is the same as the number of standard caps. The advantage of this method is that the equipment modification is less, the investment is small, the number of replaced parts is less, and the switching is fast. The disadvantage is that the interval of the waste screen becomes larger, and the number of caps produced per ton is the same as the number of standard caps produced per ton, and the material saving is not achieved.

[0060] In the second implementation method, on the basis of changing the blanking size, further change the printed size drawing and the layout drawing of the sheet, so that more caps can be arranged on the sheet with the same area, thereby increasing the number of caps produced per ton. Through this transformation, the transformation is more thorough, and the number of caps produced per ton is more than that of the first transformation. However, the investment is greater.

[0061] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Crown bottle cap punching equipment with fast switching between medium cap and standard cap, comprising a forming machine, a screening machine, an electromagnetic lifting machine, a storage tower, a horizontal conveyor, a molding machine and an air-cooled conveyor; the forming machine is provided with a punching machine mold component, the punching machine mold component comprises an upper template, a middle template and a lower template, the middle template is provided with a plurality of mold positions, each of which is provided with a punching and shearing upper mold; the lower template is provided with a plurality of mold positions, each of which is provided with a forming mold and a punching and shearing female mold; the molding machine is provided with a rotary disk, the rotary disk is provided with a cover flipper assembly and a conveying channel, characterized in that: Two sets of replaceable punching and shearing upper dies, punching and shearing female dies and forming dies are provided, one set is adapted to the cutting size of standard covers, and the other set is adapted to the cutting size of medium covers; two sets of flip cover assemblies are provided, and the two sets of flip cover assemblies include upper and lower guide bars, outlet guide bars, inlet semicircular blocks, and flip covers, which are adapted to the cover height and cover shape of standard covers and medium covers respectively; the conveying channel is provided with an adjustment pad for increasing or decreasing the adjustment according to the height of the standard covers and medium covers.

2. The crown cap punching equipment for fast switching between medium cap and standard cap according to claim 1, characterized in that: The forming machine is provided with a stepping box assembly and a gear component, and the stepping box assembly includes a fast-step cam, a stepping disk, and a slow-step cam; two sets of the upper template, the middle template, and the lower template are provided, which are respectively adapted to the bottle cap layout drawings of standard caps and medium caps; two sets of the stepping box assembly and the gear component are provided, which are respectively adapted to the sheet stepping length of the standard cap and medium cap layout layout.

3. The crown cap punching equipment for fast switching between medium cap and standard cap according to claim 2, characterized in that: The two sets of upper templates, middle templates and lower templates, one set has an overlap width of 0.40 mm between each two mold positions, and the other set has an overlap width of 1.30 mm between each two mold positions.

4. The crown cap punching equipment for fast switching between medium cap and standard cap according to any one of claims 1 and 2, characterized in that: The adjustment pads are arranged at the bottle cap inlet and the bottle cap outlet of the conveying channel.

5. The crown cap punching equipment for fast switching between medium cap and standard cap according to any one of claims 1 and 2, characterized in that: Two sets of the punching and shearing upper dies, the punching and shearing female dies and the forming dies, one set has a cutting size of φ38mm, and the other set has a cutting size of φ37.10mm.

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