Flange punching device of exhaust system

Abstract

The utility model provides a flange punching device of an exhaust system, which relates to the field of flange processing and comprises a punching table (10), a door-shaped support (20), a hydraulic component (30), a lifting plate (40), a punching component and a positioning component, the door-shaped support (20) is arranged on the end face of the punching table (10), and the hydraulic component (30) is arranged in the middle of the bottom surface of the door-shaped support (20). A lifting plate (40) is arranged at the output end of the hydraulic assembly (30), and punching assemblies are evenly distributed on the bottom face of the lifting plate (40) around the central axis of the lifting plate (40). Punching grooves (11) are evenly formed in the positions, corresponding to the punching assemblies, of the punching table (10), and a positioning assembly is arranged in the middle of the punching table (10) and comprises a conical sliding block (61), an arc-shaped positioning block (62) and a connecting rod (63). According to the punching device, multi-hole punching can be completed in the one-time downward pressing process, and the punching efficiency is effectively improved; and meanwhile, the punching device can be adjusted according to flange plates of different sizes, and the application range is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of flange processing, and particularly relates to a punching device for an exhaust system flange. Background Art

[0002] A flange is a connecting component between pipes. It is mainly of an annular structure and is provided with a circle of mounting holes on the outer ring of the annular through-hole for facilitating the installation of bolts or screws, etc. At present, in the process of machining a flange with a relatively thin thickness, the flange blank is first forged into shape, then the forged blank is punched, and finally the punched blank is subjected to finish machining such as turning to obtain a flange part. Chinese patent document CN221362152U discloses a flange stamping automatic rotation device. After placing the flange to be processed on the upper side of the placing disc, the driving motor, the sector gear and the driven gear cooperate to drive the transmission rod and the placing disc to rotate, so that the flange to be processed rotates to a fixed position, improving the stamping efficiency of the flange. At the same time, by starting the hydraulic cylinder during the rotation of the flange to be processed, the hydraulic cylinder and the pressing rod drive the stamping block to move up and down, so that the stamping block is accurately inserted into the inner side of the through-hole during the rotation of the flange to be processed, making the flange stamping operation automated and further improving the stamping efficiency of the flange. However, this device can only achieve the stamping of one hole on the flange at a time. When stamping multiple holes, the stamping takes a long time and the working efficiency is low. At the same time, this device cannot punch flanges of different sizes, has a narrow application range, cannot meet the processing requirements of industrial parts of various sizes, and greatly increases the equipment cost. Summary of the Utility Model

[0003] Aiming at the problems existing in the above prior art, the purpose of the utility model is to provide a punching device for an exhaust system flange. This punching device can complete the punching of multiple holes in one pressing process, thereby effectively improving the punching efficiency and reducing the punching time. At the same time, this punching device can be adjusted for flanges of different sizes, thereby expanding the use range of the device, reducing the cost of the equipment required for punching, and further enhancing the practical value of the punching device.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] An exhaust system flange punching device includes a punching table, a portal bracket, a hydraulic component, a lifting plate, a punching component and a positioning component. A portal bracket is arranged on the end face of the punching table, and a hydraulic component is arranged in the middle of the bottom surface of the portal bracket. The output end of the hydraulic component is provided with a lifting plate, and the punching components are evenly distributed around the central axis of the bottom surface of the lifting plate; The punching table is evenly provided with punching grooves corresponding to the punching components, and a positioning component is arranged in the middle of the punching table. The positioning component includes a conical slider, an arc-shaped positioning block and a connecting rod. A through hole is opened in the middle of the punching table, and the conical slider is slidably arranged in the through hole. The longitudinal section of the conical slider is an isosceles trapezoid structure with a small upper diameter and a large lower diameter. There are multiple arc-shaped positioning blocks, and they are evenly distributed around the central axis of the through hole on the end face of the punching table outside the through hole. The inner wall of the arc-shaped positioning block is connected to the inclined surface of the conical slider through a connecting rod. The connecting rod is slidably connected to the conical slider and fixedly connected to the arc-shaped positioning block.

[0006] Based on further optimization of the above solution, the punching component includes a sliding seat and a punching rod. The sliding seat is slidably arranged on the bottom surface of the lifting plate, and the punching rod is fixedly arranged at the bottom of the sliding seat. The sliding seat and the punching rod are coaxially arranged.

[0007] Based on further optimization of the above solution, the sliding seat is positioned on the bottom surface of the lifting plate through screws. Specifically: sliding grooves are evenly opened on the bottom surface of the lifting plate around its own central axis. The end face of the sliding seat is slidably clamped in the corresponding sliding grooves. A row of positioning holes are evenly arranged on both sides of the sliding grooves. Installation holes are opened on the sliding seat corresponding to the positioning holes. The sliding seat is fixedly positioned by inserting screws into the installation holes and the corresponding positioning holes respectively.

[0008] Based on further optimization of the above solution, a ring-shaped collection box is fixedly arranged on the bottom surface of the punching table corresponding to the punching grooves. The top surface of the ring-shaped collection box is respectively communicated with the bottom of each punching groove.

[0009] Based on further optimization of the above solution, a positioning groove is opened in the middle of the top surface of the conical slider. A positioning pin is arranged on the bottom surface of the lifting plate corresponding to the positioning groove. The central positioning between the lifting plate and the punching table is realized through the cooperation of the positioning pin and the positioning groove.

[0010] Based on further optimization of the above solution, a rubber layer is arranged on the side surface of the arc-shaped positioning block away from the connecting rod to ensure the clamping force of the positioning component on the flange.

[0011] Based on further optimization of the above solution, the movement of the conical slider is controlled by a driving component arranged at the bottom of the punching table. Specifically: the driving component includes a hoisting bracket, a driving motor and a screw rod. The hoisting bracket is fixedly arranged on the bottom surface of the punching table outside the through hole, and the driving motor is arranged on the end face of the hoisting bracket. The output shaft of the driving motor is fixedly provided with a screw rod, and the screw rod is coaxial with the through hole. A threaded groove with the same axis is opened on the bottom surface of the conical slider, and the screw rod is threadedly connected with the threaded groove.

[0012] The following are the technical effects of the present utility model:

[0013] Through the cooperation of the hydraulic component, the lifting plate and the punching component, the present application drives each punching component to move downward simultaneously by the downward movement of the lifting plate, so as to realize the punching of multiple groups of holes on the same flange during one downward movement process, effectively improving the punching efficiency and avoiding the increase in time consumption caused by multiple punchings. At the same time, through the positioning component composed of the conical slider, the arc-shaped positioning block and the connecting rod, the present application can punch flanges with different inner diameters (i.e., different sizes), and cooperate with the adjustable positioning component to realize the punching of the outer ring mounting holes of flanges with different sizes. It has a wide application range and a simple adjustment method. By using one device, it can meet the manufacturing of flanges with different specifications in industrial production, effectively saving equipment costs. In addition, through the cooperation of the punching component and the positioning component, the present application can realize the stable positioning of the flange, effectively avoiding the problems such as the deviation of the flange due to the extrusion force during the punching process, resulting in low punching accuracy, poor quality or punching failure. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the punching device in the embodiment of the present utility model.

[0015] Figure 2 It is Figure 1 the A-A sectional view of

[0016] Figure 3 It is Figure 1 the B-B sectional view of

[0017] Figure 4 It is Figure 1 the C-C sectional view of

[0018] Among them, 10, punching table; 11, punching groove; 12, through hole; 13, annular collection box; 14, support foot; 20, gantry bracket; 30, hydraulic component; 40, lifting plate; 41, positioning pin; 42, chute; 43, positioning hole; 51, sliding seat; 52, punching rod; 61, conical slider; 610, positioning groove; 611, lifting bracket; 612, drive motor; 613, screw rod; 62, arc-shaped positioning block; 63, connecting rod; 70, flange. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] Embodiment 1:

[0021] An exhaust system flange punching device, asFigure 1 As shown in the figure, it includes a stamping table 10, a portal bracket 20, a hydraulic component 30, a lifting plate 40, a punching component and a positioning component. The bottom surface of the stamping table 10 is fixed to the ground by setting support feet 14. A portal bracket 20 is arranged at the end surface of the stamping table 10 (the portal bracket 20 can adopt common structures and materials in the field), and a hydraulic component 30 is arranged in the middle of the bottom surface of the portal bracket 20 (the hydraulic component 30 can adopt a combination of common hydraulic telescopic rods and hydraulic cylinders in the field, and is not specifically limited in this embodiment). The output end of the hydraulic component 30 is provided with a lifting plate 40, and punching components are evenly distributed around the central axis of the bottom surface of the lifting plate 40 (the number of punching components is set according to the number of holes to be punched in the actual flange 70); The punching component includes a sliding seat 51 and a punching rod 52. The sliding seat 51 is slidably arranged on the bottom surface of the lifting plate 40, and the punching rod 52 is fixedly arranged at its (i.e., the sliding seat 51) bottom. The sliding seat 51 and the punching rod 52 are coaxially arranged. The sliding seat 51 is positioned on the bottom surface of the lifting plate 40 by screws. Specifically: sliding grooves 42 are evenly opened on the bottom surface of the lifting plate 40 around its own central axis (as Figure 2 shown), the end surface of the sliding seat 51 is slidably clamped in the corresponding sliding groove 42 (the number of sliding grooves 42 is set according to the actual situation, see Figure 2 shown. In this embodiment, the number of sliding grooves 42 is 8), and a row of positioning holes 43 are evenly arranged on both sides of the sliding groove 42 (as Figure 2 shown, the number of single-row positioning holes 43 is set according to the actual situation). The sliding seat 51 is provided with mounting holes corresponding to the positioning holes 43, and the sliding seat 51 is fixedly positioned by inserting screws into the mounting holes and the corresponding positioning holes 43 respectively.

[0022] Punching grooves 11 are evenly opened on the stamping table 10 corresponding to the punching components (specifically, the punching rods 52). The diameter of the punching grooves 11 is set according to the actual situation, and the position of the punching grooves 11 can be changed by inserts (this method is not unique, and other equivalent forms of structures can also be used), as Figure 4 shown, that is, the punching grooves 11 are vertical through holes arranged on the inserts. By setting through holes at different positions on different inserts, corresponding to different sizes of flanges 70, the inserts are detachably connected to the stamping table 10 (the inserts and the stamping table 10 can be fixed and relatively positioned by screws and connecting parts). According to different sizes of flanges 70 (i.e., the punching positions are changed), different inserts can be selected. A circular collecting box 13 is fixedly arranged on the bottom surface of the stamping table 10 corresponding to the punching grooves 11, and the top surface of the circular collecting box 13 is respectively communicated with the bottom of each punching groove 11. A positioning component is arranged in the middle of the stamping table 10. The positioning component includes a conical slider 61, an arc-shaped positioning block 62 and a connecting rod 63. A through hole 12 is opened in the middle of the stamping table 10, and the conical slider 61 is slidably arranged in the through hole 12. The longitudinal section of the conical slider 61 is an isosceles trapezoid structure with a smaller upper diameter and a larger lower diameter (see Figure 1As shown in the figure, there are multiple arc-shaped positioning blocks 62, and they are evenly distributed around the central axis of the through hole 12 on the end face of the stamping table 10 on its outer circle (i.e., the outer circle of the through hole 12). The number of arc-shaped positioning blocks 62 is set according to the actual situation. In order to perfectly fit the arc surface, generally there are no less than ten, such as Figure 3 As shown, in this embodiment, 12 arc-shaped positioning blocks 62 are adopted. The inner wall of the arc-shaped positioning block 62 is connected to the inclined surface of the conical slider 61 through a connecting rod 63. The connecting rod 63 is slidably connected to the conical slider 61 and fixedly connected to the arc-shaped positioning block 62. A positioning groove 610 is opened in the middle of the top surface of the conical slider 61, and a positioning pin 41 is provided on the bottom surface of the lifting plate 40 corresponding to the positioning groove 610. The central positioning between the lifting plate 40 and the stamping table 10 is realized through the cooperation of the positioning pin 41 and the positioning groove 610. A rubber layer is provided on the side surface of the arc-shaped positioning block 62 away from the connecting rod 63 to ensure the clamping force of the positioning assembly on the flange 70.

[0023] The movement of the conical slider 61 is controlled by a driving assembly provided at the bottom of the stamping table 10. Specifically, the driving assembly includes a hoisting bracket 611, a driving motor 612 and a screw rod 613. The hoisting bracket 611 is fixedly provided on the bottom surface of the stamping table 10 on the outer circle of the through hole 12, and the driving motor 612 is provided on the end face of the hoisting bracket 611. The output shaft of the driving motor 612 is fixedly provided with the screw rod 613 through a coupling, and the screw rod 613 is coaxial with the through hole 12. A threaded groove coaxial with the axis is opened on the bottom surface of the conical slider 61, and the screw rod 613 is threadedly connected to the threaded groove.

[0024] Working principle:

[0025] During use, first select the corresponding inserts according to the size of the flange 70 to be punched and the punching position, and select the inserts with punching grooves 11 according to the number of punchings (that is, a total of ten inserts are required, and ten insert positions are provided on the stamping table 10. If only six holes need to be punched for the corresponding flange 70, then the other four inserts are solid inserts without punching grooves 11) and fixedly install each insert; then, adjust the position of the punching assembly so that the punching rod 52 corresponds to the punching groove 11 (the punching assembly corresponding to the insert without the punching groove 11 is disassembled); after that, place the flange 70 to be stamped on the end face of the stamping table 10 so that the arc-shaped positioning blocks 62 are located within the inner circle of the flange 70, and then start the screw rod 613 to move the conical slider 61 upward, and then push the arc-shaped positioning blocks 62 to expand outward through the connecting rod 63 to realize the clamping and fixing of the flange 70, and this step also completes the central positioning of the flange 70 (that is, the central axis of the flange 70 is collinear with the central axis of the conical slider 61); finally, start the hydraulic assembly 30 to drive the punching assembly to punch the flange 70 through the lifting plate 40.

[0026] Embodiment 2:

[0027] As another preferred embodiment of the present application, on the basis of the solution of Embodiment 1, in order to prevent the positioning pin 41 from restricting the further downward movement of the lifting plate 40 after being engaged with the positioning groove 610, thus forming a hard limit and affecting punching, a vertical sliding groove is provided on the bottom surface of the lifting plate 40 corresponding to the positioning pin 41. The top end of the positioning pin 41 is slidably disposed in the vertical sliding groove, and the top end of the positioning pin 41 is connected to the top surface of the vertical sliding groove by a spring. By using the deformation amount of the spring to offset the hard limit of the engagement between the positioning pin 41 and the positioning groove 610 (not specifically marked in the figure, but those skilled in the art can understand).

[0028] Embodiment 3:

[0029] As another preferred embodiment of the present application, on the basis of the solution of Embodiment 1 or Embodiment 2, in order to ensure the stable lifting of the lifting plate 40 and prevent deviation during the lifting process, the outer wall of the lifting plate 40 is slidably connected to the inner wall of the portal frame 20 (not specifically marked in the figure, but the specific sliding form can be understood by those skilled in the art).

[0030] Embodiment 4:

[0031] As another preferred embodiment of the present application, on the basis of the solutions of Embodiments 1 to 3, in order to prevent problems such as warping and curling of the flange 70 during the punching process, which affect the punching quality, a coaxial annular positioning block is slidably disposed on the outer wall of the punching rod 52 (not specifically marked in the figure, but those skilled in the art can understand), and the end surface of the annular positioning block is connected to the bottom surface of the sliding seat 51 by a compression spring. The compression spring is located outside the punching rod 52; in the initial position, the bottom end of the annular positioning block is located below the bottom end of the punching rod 52 (i.e., the punching rod 52 is initially located inside the cavity of the annular positioning block).

Claims

1. An exhaust system flange punching device, characterized in that: It includes a stamping table, a gate-shaped bracket, a hydraulic component, a lifting plate, a punching component and a positioning component. The gate-shaped bracket is arranged on the end face of the stamping table and the hydraulic component is arranged in the middle of the bottom face of the gate-shaped bracket. The lifting plate is arranged at the output end of the hydraulic component and the punching components are evenly distributed around the central axis on the bottom face of the lifting plate. Punching grooves are evenly arranged on the stamping table corresponding to the punching components and a positioning component is arranged in the middle of the stamping table. The positioning component includes a conical slider, an arc-shaped positioning block and a connecting rod. A through hole is arranged in the middle of the stamping table and a conical slider is slidably arranged in the through hole. The longitudinal section of the conical slider is an isosceles trapezoidal structure with a small upper diameter and a large lower diameter. There are multiple arc-shaped positioning blocks and they are evenly distributed on the end face of the stamping table on its outer circle around the central axis of the through hole. The inner wall of the arc-shaped positioning block is connected to the inclined surface of the conical slider through a connecting rod. The connecting rod is slidably connected to the conical slider and fixedly connected to the arc-shaped positioning block.

2. An exhaust system flange punching device according to claim 1, characterized in that: The punching assembly comprises a sliding seat and a punching rod. The sliding seat is slidably arranged on the bottom surface of the lifting plate and the punching rod is fixedly arranged at the bottom thereof. The sliding seat and the punching rod are coaxially arranged.

3. The exhaust system flange punching device according to claim 2, characterized in that: The sliding seat is positioned on the bottom surface of the lifting plate by screws, specifically: sliding grooves are evenly arranged on the bottom surface of the lifting plate and around its own central axis, the end surface of the sliding seat is slidably engaged in the corresponding sliding groove, a row of positioning holes are evenly arranged on both sides of the sliding groove, and the sliding seat is provided with mounting holes corresponding to the positioning holes, and the sliding seat is fixedly positioned by inserting screws into the mounting holes and the corresponding positioning holes respectively.

4. The exhaust system flange punching device according to claim 1, characterized in that: An annular collecting box is fixedly arranged on the bottom surface of the punching table corresponding to the punching slots, and the top surface of the annular collecting box is respectively connected with the bottom of each punching slot.

5. The exhaust system flange punching device according to claim 1, characterized in that: A positioning groove is arranged in the middle of the top surface of the conical sliding block, and a positioning pin is arranged on the bottom surface of the lifting plate corresponding to the positioning groove.

6. The exhaust system flange punching device according to claim 1, characterized in that: A rubber layer is arranged on a side surface of the arc-shaped positioning block away from the connecting rod.

7. The exhaust system flange punching device according to claim 1, characterized in that: The movement of the conical slider is controlled by a driving assembly arranged at the bottom of the stamping table, specifically: the driving assembly includes a lifting bracket, a driving motor and a screw. The lifting bracket is fixedly arranged on the bottom surface of the stamping table on the outer circle of the through hole and the driving motor is arranged on the end surface of the lifting bracket. The screw is fixedly arranged on the output shaft of the driving motor and the screw is coaxial with the through hole. A coaxial thread groove is arranged on the bottom surface of the conical slider, and the screw is threadedly connected with the thread groove.

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