Double-hole punching device for filter cover plate

Abstract

The utility model relates to the technical field of stamping die equipment, and discloses a filter cover plate double-hole stamping device which comprises a bottom plate, a double-hole upper die plate and a double-hole lower die plate, a supporting base is arranged on one side of the bottom plate, a movable die base is arranged on the supporting base in a lifting mode, and the double-hole upper die plate is arranged at the bottom of the movable die base; the double-hole lower die plate is located under the double-hole upper die plate and arranged on the bottom plate, two blanking holes matched with the double-hole proportion are formed in the double-hole upper die plate, and a circle of blanking tools are arranged on the periphery of the side, facing the double-hole lower die plate, of each blanking hole. The side, facing the double-hole upper die plate, of the double-hole lower die plate is coaxially provided with a mounting groove corresponding to each blanking hole, the diameter of the mounting groove is larger than that of the blanking hole, a circular ring structure matched in an inserted mode is arranged in each mounting groove, and the section, separated in the axial direction, of each circular ring structure is in a convex shape. And the inner ring of the circular ring structure is a blanking hole matched with the blanking hole. The double-hole punching device has the effect of improving the double-hole punching stability and the machining efficiency of the filter cover plate.

Description

Technical Field

[0001] The present application relates to the technical field of stamping die equipment, and in particular to a double-hole stamping device for a filter cover. Background Art

[0002] As an important electronic component, filters play a vital role in various communications devices. During filter manufacturing, the quality of the cover plate directly impacts its performance and reliability. Currently, filter covers typically require precise hole machining on the profile plate, a process that demands extremely high precision. With growing market demand for filters, improving the efficiency and quality of cover plate hole machining has become a key factor in industrial upgrading.

[0003] Currently, most common filters on the market use metal materials to make their covers. This material has good corrosion resistance and mechanical strength, but it has extremely high requirements for processing accuracy. Existing methods for processing filter cover holes mostly use single-hole stamping. Specific measures include using a single-hole stamping die to align a hole on the profile plate for stamping; or after completing a stamping, adjusting the position of the profile plate and repeating the same stamping operation for the next hole. These methods are widely used in the mass production of filter covers, and can complete the processing of a hole with a single stamping. In addition, there is also a continuous stamping method, which installs a continuous die on the punch press, so that the profile plate can gradually complete the processing of all holes in the process of multiple stamping.

[0004] Since only one hole position can be operated at a time, when two holes with a short spacing need to be punched out on the profile plate for making the filter cover, the two holes are punched out in sequence using a single-hole punching method. This can easily lead to uneven force on the hole punched out later, causing the profile plate portion between the two holes to break, which not only increases the waste rate of the filter cover, but also reduces the processing efficiency of the filter cover. Utility Model Content

[0005] In order to improve the stability and processing efficiency of double-hole stamping of a filter cover, the present application provides a double-hole stamping device for a filter cover.

[0006] The double-hole punching device for a filter cover provided in this application adopts the following technical solution:

[0007] A double-hole stamping device for a filter cover plate comprises a base plate, a double-hole upper template and a double-hole lower template, a support seat is provided on one side of the base plate, and a movable mold seat is provided for lifting on the support seat, the double-hole upper template is arranged at the bottom of the movable mold seat, the double-hole lower template is located directly below the double-hole upper template and is arranged on the base plate, two punching holes are provided on the double-hole upper template in a proportion matching the double holes on the profile plate, and a circle of punching tools is provided on the circumference of each punching hole facing the side of the double-hole lower template, a mounting groove with a diameter larger than the punching hole is coaxially provided on the side of the double-hole lower template facing the double-hole upper template corresponding to each punching hole, and a plug-in matching circular ring structure is provided in each mounting groove, the cross-section of the circular ring structure separated along the axial direction is convex, the inner circle of the circular ring structure is a blanking hole, and the size of the blanking hole is matched with the punching hole.

[0008] By adopting the above technical solution, the double-hole punching device for the filter cover can simultaneously and precisely punch two holes on the profile plate, effectively improving processing efficiency and stability. The design of the double-hole upper template and the double-hole lower template ensures that the two holes can be processed at the same station at one time, avoiding the errors and inefficiencies caused by multiple adjustments to the profile plate position. The matching design between the punching tool and the circular ring structure makes the force distribution during the punching process more uniform, reducing the risk of fracture of the profile plate due to uneven force, thereby reducing the scrap rate and improving the overall processing quality of the filter cover.

[0009] Optionally, the circular ring structure includes a plug-in ring inserted in the installation groove and a support ring extending out of the top surface of the installation groove, and the outer ring of the support ring is provided with oblique stripe-shaped ridges distributed at equal intervals.

[0010] By adopting the above technical solution, the circular ring structure is used as an auxiliary forming support member, and the outer ring of the support ring has evenly spaced oblique striped ridges. When it contacts the profile plate, it can effectively disperse the pressure generated during the stamping process through the oblique striped ridges, effectively improving the stability between the circular ring structure and the mounting groove, thereby avoiding the deviation of the circular ring structure during the stamping process, thereby improving the accuracy and stability of the double-hole stamping of the filter cover.

[0011] Optionally, a circular support plate is provided on the double-hole lower template for lifting, and a plurality of guide vertical rods are distributed on the bottom wall of the support plate. A guide groove is vertically opened corresponding to each guide vertical rod on the double-hole lower template. A single guide vertical rod is plugged into the guide groove, and a compression spring is sleeved on each guide vertical rod. The compression spring abuts between the bottom wall of the support plate and the top wall of the double-hole lower template. When the double-hole upper template and the double-hole lower template are closed, the top end of the support ring extends out of the support plate and abuts the profile plate.

[0012] By adopting the above technical solution, before the stamping operation, the support plate can provide stable support for the profile plate, thereby reducing the possibility of the profile plate being offset due to the support ring supporting the profile plate before stamping; during the stamping process of the stamping device, the double-hole upper template moves downward, first applying pressure to the support plate, so that the double-hole upper template and the support plate clamp the profile plate; then, the double-hole upper template continues to move downward, and under the guidance of the guide vertical rod and the elastic action of the spring, the support plate moves downward smoothly and always clamps the profile plate with the double-hole upper template until the support ring supports the partial plate at the edge of the hole to be punched, so that the punching tool and the inner ring are tangent to achieve precise blanking. The support plate provides stable support and improves the accuracy of the profile plate position during the double-hole stamping process, thereby avoiding the fracture of the profile plate between the hole positions due to uneven force, and improving the processing accuracy and efficiency of the filter cover.

[0013] Optionally, a mounting plate that cooperates with the double-hole upper template is provided at the bottom of the movable mold base, and the double-hole upper template is installed on the bottom of the mounting plate by countersunk bolts. A plug-in slot is provided on the bottom end of the movable mold base, and a fixing rod that cooperates with the plug-in slot is provided on the top wall of the mounting plate, and a fastener for fixing the fixing rod is provided on the movable mold base.

[0014] By adopting the above technical solution, the double-hole stamping device for the filter cover fixes the double-hole upper template at the bottom of the movable die base through a mounting plate, uses countersunk bolts to achieve stable installation, and through the cooperation of the plug-in slot and the fixing rod, combined with the function of fasteners, realizes the rapid replacement and fixation of the double-hole upper template on the movable die base, thereby improving the flexibility and maintenance efficiency of the equipment.

[0015] Optionally, an abutment plane is provided on the side wall of the fixing rod along its own axis, and a threaded hole is provided on the side wall of the movable mold base that is connected to the plug-in slot. The fastener is a tightening bolt that is threadedly rotated through the threaded hole of the support plate. The tightening bolt is rotated through the threaded hole to abut the abutment plane of the fixing rod, and the fixing rod is tightened against the side wall of the plug-in slot away from the threaded hole.

[0016] By adopting the above technical solution, the abutment plane opened axially on the side wall of the fixing rod cooperates with the threaded hole on the side wall of the movable die base, and the fixing rod is fastened to the side wall of the insertion groove away from the threaded hole by using a tightening bolt, thereby effectively improving the installation stability and reliability of the double-hole upper template at the bottom of the movable die base, ensuring precise alignment during the double-hole stamping process, and avoiding processing deviations caused by loose fixation.

[0017] Optionally, the cross-section of the punching tool separated along the axial direction is arranged in a triangular shape.

[0018] By adopting the above technical solution, the punching tool is arranged in a triangular shape, which enhances the strength of the tool and can significantly improve the stability during double-hole punching.

[0019] Optionally, the inclined surface of the punching tool facing away from the punching hole is arranged in an arc shape, and the center of the arc is located obliquely downward away from the punching hole.

[0020] By adopting the above technical solution, the inclined surface of the punching tool away from the punching hole is set in an arc shape, so that under the support of the circular ring structure, the edge of the punching hole of the profile plate is squeezed by the arc surface, thereby reducing the burr rate that appears after the profile plate is punched, thereby reducing the scrap rate of the filter cover and improving the processing accuracy and efficiency.

[0021] Optionally, a positioning rod is provided between the double-hole upper template and the double-hole lower template, and the positioning rod slides through the support plate, and a plurality of positioning screw holes are distributed near the periphery of the top wall of the double-hole lower template, and one positioning rod is provided for each positioning screw hole, and a threaded section that cooperates with the positioning screw hole is provided at the bottom end of the positioning rod, and positioning through holes are provided on the double-hole upper template corresponding to the multiple positioning rods on the double-hole lower template, and the double-hole upper template is jointly sleeved on the multiple positioning rods.

[0022] By adopting this technical solution, the dual-hole upper and lower templates are precisely positioned using positioning rods, ensuring accurate relative positioning between them. This improves the precision and stability of the dual-hole stamping process for the filter cover. The positioning rods slide through a support ring and are secured to the dual-hole lower template via positioning screw holes and threaded sections, ensuring their stability. The positioning holes in the dual-hole upper template allow the template to be smoothly positioned over the positioning rods, further enhancing the assembly precision and operational reliability of the entire device.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The double-hole punching device for the filter cover can precisely punch two holes on the profile plate simultaneously, effectively improving processing efficiency and stability. The design of the double-hole upper template and the double-hole lower template ensure that both holes can be processed at the same station, avoiding the errors and inefficiencies caused by multiple adjustments to the profile plate position. The matching design between the punching tool and the circular ring structure makes the force distribution during the punching process more uniform, reducing the risk of profile plate breakage caused by uneven force, thereby reducing the scrap rate and improving the overall processing quality of the filter cover.

[0025] 2. The circular ring structure serves as a support for auxiliary forming. The outer ring of the support ring has evenly spaced oblique striped ridges. When in contact with the profile plate, these ridges can effectively disperse the pressure generated during the stamping process. This effectively improves the stability between the circular ring structure and the mounting groove, thereby preventing the circular ring structure from shifting during the stamping process, thereby improving the accuracy and stability of the double-hole stamping of the filter cover.

[0026] 3. Before the stamping operation, the support plate can provide stable support for the profile plate, thereby reducing the possibility of the support ring supporting the profile plate before stamping, causing the profile plate to shift in position; during the stamping process of the stamping device, the double-hole upper template moves downward, first applying pressure to the support plate, so that the double-hole upper template and the support plate clamp the profile plate; then, the double-hole upper template continues to move downward, and under the guidance of the guide vertical rod and the elastic action of the spring, the support plate moves downward smoothly and always clamps the profile plate with the double-hole upper template until the support ring supports the partial plate at the edge of the hole to be punched, so that the punching tool and the inner ring are tangent to achieve precise blanking. The support plate provides stable support and improves the accuracy of the profile plate position during the double-hole stamping process, thereby avoiding breakage of the profile plate between the holes due to uneven force, and improving the processing accuracy and efficiency of the filter cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view showing the connection relationship between the movable mold base and the mounting plate in the embodiment of the present application.

[0029] Figure 3 It is a cross-sectional view showing the connection relationship between the support plate, the guide vertical rod, the compression spring and the double-hole lower template in the embodiment of the present application.

[0030] Description of reference numerals:

[0031] 1. Base plate; 2. Support seat; 21. Driving cylinder; 3. Moving mold seat; 31. Plug-in slot; 32. Fastener; 33. Threaded hole; 4. Mounting plate; 41. Fixing rod; 411. Abutment plane; 5. Double-hole upper template; 51. Punching hole; 52. Punching tool; 53. Positioning through hole; 6. Double-hole lower template; 61. Mounting slot; 62. Guide slot; 63. Positioning screw hole; 7. Circular ring structure; 71. Plug-in ring; 72. Support ring; 721. Blanking hole; 722. Raised ridge; 8. Support tray; 81. Guide vertical rod; 811. Compression spring; 9. Positioning rod. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] An embodiment of the present application discloses a double-hole punching device for a filter cover.

[0034] Reference Figure 1 A double-hole stamping device for a filter cover includes a base plate 1, a support base 2 is fixedly provided on one side of the base plate 1, a driving cylinder 21 is fixedly provided on the top of the support base 2, the piston rod of the driving cylinder 21 slides through the support base 2, and a movable die base 3 is fixedly provided on its bottom end, and a mounting plate 4 is detachably provided on the bottom end of the movable die base 3, a double-hole upper template 5 is installed on the bottom of the mounting plate 4 through countersunk bolts, and a double-hole lower template 6 is installed on the base plate 1 through countersunk bolts, and the double-hole lower template 6 is located directly below the double-hole upper template 5.

[0035] Reference Figure 2 A plug-in slot 31 is provided on the bottom end of the movable mold base 3, and a fixing rod 41 is fixedly provided on the top wall of the mounting plate 4. The fixing rod 41 is plugged into the plug-in slot 31, and a fastener 32 for fixing the fixing rod 41 is provided on the movable mold base 3. An abutment plane 411 is provided on the side wall of the fixing rod 41 along its own axial direction, and a threaded hole 33 is provided on the side wall of the movable mold base 3 in communication with the plug-in slot 31. The fastener 32 in this embodiment is a tightening bolt that is threadedly rotated through the threaded hole 33 of the support plate 8. The tightening bolt is rotated through the threaded hole 33 to abut against the abutment plane 411 of the fixing rod 41, and tightens the fixing rod 41 against the side wall of the plug-in slot 31 away from the threaded hole 33.

[0036] Reference Figure 2 Two punching holes 51 are provided on the double-hole upper template 5 in proportion to the double holes on the matching profile plate. A circle of punching tools 52 is fixedly provided around each punching hole 51 facing the double-hole lower template 6. The cross-section of the punching tools 52 separated along the axial direction is triangular, and the inclined surface of the punching tool 52 away from the punching hole 51 is arc-shaped, and the center of the arc is located obliquely below the punching hole 51.

[0037] Reference Figure 2 , a mounting groove 61 with a diameter larger than the punching hole 51 is coaxially provided on the side of the double-hole lower template 6 facing the double-hole upper template 5, corresponding to each punching hole 51. A circular ring structure 7 is embedded in each of the mounting grooves 61. The cross-section of the circular ring structure 7 separated along the axial direction is convex, and includes an integrally formed plug-in ring 71 and a support ring 72. The plug-in ring 71 is inserted into the mounting groove 61 and plugged into the mounting groove 61. The support ring 72 extends out of the top surface of the mounting groove 61 to assist in punching. The inner ring of the support ring 72 is a blanking hole 721, and the size of the blanking hole 721 is matched with the punching hole 51. The outer ring of the support ring 72 is evenly spaced with integrally formed oblique striped ridges 722.

[0038] Reference Figure 2and Figure 3 A circular support plate 8 is provided on the double-hole lower template 6, and a plurality of guide vertical rods 81 are fixedly provided on the bottom wall of the support plate 8. In this embodiment, two guide vertical rods 81 are distributed on the bottom walls at both ends of the length direction of the support plate 8. A guide groove 62 is vertically opened corresponding to each guide vertical rod 81 on the double-hole lower template 6. A single guide vertical rod 81 is plugged into the guide groove 62, and a compression spring 811 is sleeved on each guide vertical rod 81, which abuts between the bottom wall of the support plate 8 and the top wall of the double-hole lower template 6.

[0039] Reference Figure 2 and Figure 3 In order to assist in the assembly of the stamping device, a removable positioning rod 9 is provided between the double-hole upper template 5 and the double-hole lower template 6. A plurality of positioning screw holes 63 are provided on the top wall of the double-hole lower template 6 near the periphery. In this embodiment, two are taken as an example. The distribution line connecting the two positioning screw holes 63 is perpendicular to the distribution line connecting the two guide vertical rods 81, and one positioning rod 9 is provided for each positioning screw hole 63. A threaded section that cooperates with the positioning screw hole 63 is provided at the bottom end of the positioning rod 9, and the positioning rod 9 slides through the support plate 8. Positioning through holes 53 are provided on the double-hole upper template 5 corresponding to the multiple positioning rods 9 on the double-hole lower template 6. Before assembly, the double-hole upper template 5 is mounted on the multiple positioning rods 9; after assembly, the double-hole upper template 5 moves upward along with the movable mold base 3, and the two positioning rods 9 are unscrewed and removed from the double-hole lower template 6.

[0040] The implementation principle of a double-hole punching device for a filter cover plate in the embodiment of the present application is as follows: during the punching process of the punching device, the double-hole upper template 5 moves downward, and first applies pressure to the support plate 8, so that the double-hole upper template 5 and the support plate 8 clamp the profile plate; then, the double-hole upper template 5 continues to move downward, and under the guidance of the guide vertical rod 81 and the elastic action of the spring, the support plate 8 moves downward smoothly, and always clamps the profile plate with the double-hole upper template 5 until the support ring 72 supports the partial plate at the edge of the profile plate to be punched hole 51, so that the punching tool 52 is tangent to the inner ring, achieving precise blanking. The punching device of this solution is highly flexible, and different double-hole upper templates 5, circular structures, and double-hole lower templates 6 can be selected for installation and combination according to actual production needs.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A double-hole punching device for filter cover, characterized in that , comprising a bottom plate (1), a double-hole upper template (5) and a double-hole lower template (6), wherein a support seat (2) is provided on one side of the bottom plate (1), and a movable die seat (3) is provided on the support seat (2) for lifting, the double-hole upper template (5) is provided at the bottom of the movable die seat (3), the double-hole lower template (6) is located directly below the double-hole upper template (5) and is provided on the bottom plate (1), the double-hole upper template (5) is provided with two punching holes (51) in a proportion matching the double holes on the profile plate, and each of the punching holes (51) faces the double-hole lower template (6). A circle of punching tools (52) is provided on each side of the double-hole lower template (6), and a mounting groove (61) with a diameter larger than the punching hole (51) is coaxially opened on the side of the double-hole lower template (6) facing the double-hole upper template (5), corresponding to each punching hole (51), and a plug-fitting circular ring structure (7) is provided in each mounting groove (61), and the cross section of the circular ring structure (7) along the axial separation is convex, and the inner circle of the circular ring structure (7) is a blanking hole (721), and the size of the blanking hole (721) is matched with the punching hole (51).

2. A double-hole punching device for a filter cover according to claim 1, characterized in that The circular ring structure (7) includes a plug-in ring (71) inserted into the installation groove (61) and a support ring (72) extending from the top surface of the installation groove (61), and the outer ring of the support ring (72) is evenly spaced with oblique stripe-shaped ridges (722).

3. A double-hole punching device for a filter cover according to claim 2, characterized in that A circular support plate (8) is provided on the double-hole lower template (6) for lifting and lowering, and a plurality of guide vertical rods (81) are distributed on the bottom wall of the support plate (8). A guide groove (62) is vertically provided on each guide vertical rod (81) on the double-hole lower template (6). A single guide vertical rod (81) is plugged into the guide groove (62), and a compression spring (811) is sleeved on each guide vertical rod (81). The compression spring (811) is in contact between the bottom wall of the support plate (8) and the top wall of the double-hole lower template (6). When the double-hole upper template (5) and the double-hole lower template (6) are molded, the top end of the support ring (72) extends out of the support plate (8) and contacts the profile plate.

4. A double-hole punching device for a filter cover according to claim 1, characterized in that The bottom of the movable mold base (3) is provided with a mounting plate (4) that matches the double-hole upper template (5), and the double-hole upper template (5) is installed on the bottom of the mounting plate (4) through countersunk bolts. A plug-in slot (31) is provided on the bottom end of the movable mold base (3), and a fixing rod (41) that is plug-fitted with the plug-in slot (31) is provided on the top wall of the mounting plate (4), and a fastener (32) for fixing the fixing rod (41) is provided on the movable mold base (3).

5. A double-hole punching device for a filter cover according to claim 4, characterized in that The side wall of the fixing rod (41) is provided with an abutting plane (411) along its own axial direction, and the side wall of the movable mold base (3) is provided with a threaded hole (33) connected to the plug-in slot (31). The fastener (32) is a tightening bolt that is threadedly rotated through the threaded hole (33) of the support plate (8). The tightening bolt is rotated through the threaded hole (33) to abut against the abutting plane (411) of the fixing rod (41), and tightens the fixing rod (41) against the side wall of the plug-in slot (31) away from the threaded hole (33).

6. A double-hole punching device for a filter cover according to claim 1, characterized in that The punching tool (52) is arranged in a triangular shape along the axially separated cross section.

7. A double-hole punching device for a filter cover according to claim 6, characterized in that The inclined surface of the punching tool (52) facing away from the punching hole (51) is arranged in an arc shape, and the center of the arc is located obliquely downward away from the punching hole (51).

8. A double-hole punching device for a filter cover according to claim 3, characterized in that A positioning rod (9) is provided between the double-hole upper template (5) and the double-hole lower template (6), and the positioning rod (9) slides through the support plate (8). The top wall of the double-hole lower template (6) is provided with a plurality of positioning screw holes (63) near the periphery. One positioning rod (9) is provided for each positioning screw hole (63), and a threaded section that cooperates with the positioning screw hole (63) is provided at the bottom end of the positioning rod (9). Positioning through holes (53) are provided on the double-hole upper template (5) corresponding to the plurality of positioning rods (9) on the double-hole lower template (6), and the double-hole upper template (5) is collectively sleeved on the plurality of positioning rods (9).

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