A smoke tube array punching device

Abstract

The application discloses a punching device for a smoke pipe array, which comprises a rack, a punching module fixedly arranged on the rack, wherein the punching module is provided with a movable die, a fixed die and a punching head capable of punching the smoke pipe radially through the movable die and the fixed die; a first air passage capable of discharging the waste after punching is coaxially and throughly arranged in the punching head; and a waste discharging module fixedly arranged on the rack, wherein the waste discharging module is provided with an air chamber capable of inhaling air when the movable die moves from a second stroke position to a first stroke position, and the movable die has a third stroke position in the process of moving from the first stroke position to the second stroke position. The application can not only realize the array punching of the smoke pipe, but also can be structurally coupled with the punching stroke synchronously, so that the punching action and the waste discharging process are completed in the same working cycle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smoke pipe processing, in particular to a smoke pipe array punching device. BACKGROUND

[0002] In the manufacturing process of heat exchange equipment, boiler system and flue gas treatment device, the smoke pipe usually needs to form a regular distribution of punching structure on the pipe wall to meet the process requirements of gas flow, heat exchange or structure installation. The existing smoke pipe punching processing is mostly completed by mechanical stamping, drilling or laser punching, among which the stamping forming method is widely used due to its high efficiency. However, for the annular multi-hole processing of smoke pipe array, the existing technology still has certain limitations.

[0003] On the one hand, in the process of stamping and punching the smoke pipe, a large amount of punching waste or burr debris will inevitably be produced. The existing equipment mostly relies on manual cleaning, external dust collection device or low-pressure air supply for blowing to prevent waste from remaining on the inner wall of the smoke pipe or the punching area. However, this kind of way usually needs to additionally configure independent suction or air supply system, which has complex structure, high energy consumption, and in the case of high beat continuous punching, the waste removal is not timely, which can cause punch jamming, die wear or punching quality decline.

[0004] On the other hand, the existing smoke pipe punching equipment mostly adopts step-by-step rotation or multiple positioning method for processing when realizing annular array punching, that is, after completing a punch or a group of punches, the smoke pipe is adjusted in angle by manual or servo mechanism, and then the next punching operation is performed. This processing method not only has long beat, but also introduces cumulative error in the process of multiple clamping and positioning, which affects the uniformity and coaxiality of the annular hole array, especially when multiple smoke pipes are processed in batch array, the overall processing consistency and production efficiency are restricted.

[0005] In addition, in the existing punching device, the stamping stroke is mainly used to complete the material shearing forming, and its movement process is not effectively utilized to assist in completing the waste removal or air flow guiding function. The punching action and waste treatment action are independent of each other, and it is difficult to realize efficient and synchronous punching and cleaning effect without increasing additional power source. SUMMARY

[0006] In view of the above problems, a smoke pipe array punching device is provided, which can not only realize the annular array punching of the smoke pipe, but also realize the synchronous discharge of the punching waste, thereby solving the technical problems that the existing punching device cannot realize the synchronous array punching and synchronous waste blowing of the smoke pipe.

[0007] To address the problems of existing technologies, this invention provides a punching device for a flue array, used to punch flue pipes, comprising: a frame; a punching module fixedly mounted on the frame, the punching module having a moving die and a fixed die, and a punching head capable of radially penetrating the moving die and the fixed die to punch the flue pipe; the punching head also having a first air passage coaxially penetrating through it to discharge the waste material after punching; when the moving die moves longitudinally upward to the first stroke position, the punching head moves radially away from the fixed die; when the moving die moves longitudinally downward to the second stroke position, the punching head moves radially through the fixed die to complete the punching; a waste discharge module fixedly mounted on the frame, the waste discharge module having an air chamber, which draws in air when the moving die moves from the second stroke position to the first stroke position, and has a third stroke position during the movement of the moving die from the first stroke position to the second stroke position; and an exhaust port, which is used when the moving die moves from the third stroke position... When the moving mold moves to the second stroke position, the compressed air in the air chamber is discharged from the exhaust port; the waste discharge module also includes an air storage cylinder, a piston that can drive the air chamber to draw in air, and a drive frame that can drive the piston to slide between the first stroke position, the second stroke position, and the third stroke position; the air storage cylinder is a hollow, arc-shaped chamber with an open top, and its internal cavity constitutes the air chamber; the piston is axially movable inside the air storage cylinder; the drive frame is fixedly installed at the bottom of the moving mold and slides with the piston; the drive frame consists of a fixed frame and a first drive member and a second drive member that are relatively fixedly installed in the fixed frame; the fixed frame is fixedly installed at the bottom of the moving mold; the first drive member and the second drive member are relatively fixedly installed at the bottom of the fixed frame; the distance between the first drive member and the second drive member is less than the distance between the first stroke position and the second stroke position.

[0008] Preferably, the bottom side of the gas storage cylinder is further provided with an air inlet hole and a one-way valve coaxially fixed in the air inlet hole.

[0009] Preferably, the punching module further includes a drive unit capable of driving the moving mold to move axially and a limiting post coaxially fixed in the fixed mold to limit the inner diameter of the smoke pipe; the drive unit is horizontally fixed in the bottom of the frame and the drive end passes through the frame and is fixedly connected to the moving mold; the limiting post is vertically fixed in the frame and coaxially arranged in the fixed mold, the outer diameter of the limiting post is smaller than the inner diameter of the fixed mold and forms an annular gap between the limiting post and the fixed mold to allow the smoke pipe to be inserted.

[0010] Preferably, the punching module further includes a limiting strip capable of longitudinally limiting the punching height of the smoke pipe; two limiting strips are provided, and the two limiting strips are vertically slidably disposed relative to each other on the inner wall of the fixed mold.

[0011] Preferably, the punching module further includes a first wedge, a second wedge, and a connector; the first wedge is fixedly disposed vertically on the inner wall of the moving mold; the second wedge and the first wedge are slidably fitted together; the punching head is fixedly disposed on the second wedge through the connector, and multiple punching heads are equidistantly disposed along the long side of the connector.

[0012] Preferably, the drive unit is provided with a sliding frame capable of longitudinally driving the moving mold to slide longitudinally and a lever drive element capable of driving the sliding frame to slide longitudinally; the sliding frame is slidably mounted on the frame in a vertical state; the lever drive element is horizontally fixedly mounted at the bottom of the frame and the drive end is hinged to the bottom of the sliding frame.

[0013] The advantages of this invention compared to the prior art are:

[0014] 1. This invention structurally couples the stamping stroke of the moving die with the piston suction, compression and exhaust processes, so that the punching action and the waste discharge process are automatically completed in the same working cycle. Without the need for an external high-pressure air source, the instantaneous high-pressure airflow generated by the stamping stroke itself can be used to directionally and efficiently flush away the waste generated by punching, effectively avoiding the problem of waste remaining in the hole and significantly improving the quality and stability of flue punching.

[0015] 2. By setting a structure that drives the piston to move only within a preset stroke range, the present invention ensures that the suction, compression and discharge of air in the air chamber only occur within the preset stroke range. This avoids the impact on the stamping accuracy of the moving die due to reverse resistance caused by gas compression in the early stage of punching, thereby ensuring the complete output of punching force and the consistency of punching. Compared with the traditional synchronous pneumatic structure, it has higher processing stability.

[0016] 3. By utilizing the cooperation of the first and second wedges, the present invention drives multiple punching heads to synchronously expand and contract radially during the movement of the moving die, enabling the punching heads to form an annular punching effect around the outer periphery of the flue. This avoids the problems of low efficiency and poor hole position consistency of single-point punching, and can automatically retract in the non-punching state, providing space for the rapid clamping and removal of the flue, thus greatly improving the processing cycle. Attached Figure Description

[0017] Figure 1 This is a three-dimensional diagram of a perforation device for a smoke tube array.

[0018] Figure 2 This is a side view of a perforated smoke tube array device.

[0019] Figure 3 yes Figure 2 Sectional view at point AA.

[0020] Figure 4 yesFigure 3 A magnified view of section B.

[0021] Figure 5 yes Figure 3 A magnified view of a portion of point C.

[0022] Figure 6 This is an exploded 3D view of the punching module and waste discharge module in a flue array punching device.

[0023] Figure 7 yes Figure 6 A magnified view of a portion of point D.

[0024] Figure 8 This is a three-dimensional structural diagram of the punching module in a flue array punching device.

[0025] The numbers on the map are:

[0026] 1. Rack;

[0027] 2. Punching module; 21. Moving mold; 22. Fixed mold; 23. Punching head; 231. First air passage; 24. Drive unit; 241. Sliding frame; 242. Lever drive element; 2421. First hinge; 2422. Second hinge; 2423. Third hinge; 2424. Electric push rod; 25. Limiting post; 251. Through hole; 26. Limiting strip; 27. First wedge; 28. Second wedge; 281. Second air passage; 29. ​​Connecting part;

[0028] 3. Waste discharge module; 31. Air chamber; 32. Exhaust port; 33. Air storage tank; 331. Air inlet; 332. One-way valve; 34. Piston; 35. Drive frame; 351. Fixing frame; 352. First drive component; 353. Second drive component. Detailed Implementation

[0029] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0030] See Figures 1 to 8As shown: A punching device for a flue array, used to punch flue pipes, includes: a frame 1; a punching module 2, fixedly mounted on the frame 1, the punching module 2 having a moving die 21 and a fixed die 22, and a punching head 23 capable of radially penetrating the moving die 21 and the fixed die 22 to punch the flue pipe; the punching head 23 also has a first air passage 231 coaxially penetrating inside, capable of discharging the waste material after punching; when the moving die 21 moves longitudinally upward to the first stroke position, the punching head 23 moves radially away from the fixed die 21. 2. When the moving die 21 moves longitudinally downward to the second stroke position, the punch head 23 moves radially through the fixed die 22 to complete the punching; the waste discharge module 3 is fixedly installed on the frame 1. The waste discharge module 3 is provided with an air chamber 31, which draws in air when the moving die 21 moves from the second stroke position to the first stroke position, and has a third stroke position when the moving die 21 moves from the first stroke position to the second stroke position; the exhaust port 32 is used to discharge air from the air chamber 31 when the moving die 21 moves from the third stroke position to the second stroke position. Compressed air is discharged from the exhaust port 32; the waste discharge module 3 also includes an air storage cylinder 33, a piston 34 capable of driving air into the air chamber 31, and a drive frame 35 capable of driving the piston 34 to slide between the first stroke position, the second stroke position, and the third stroke position; the air storage cylinder 33 is a hollow arc-shaped chamber with an open top, and its internal cavity constitutes the air chamber 31; the piston 34 is axially movable inside the air storage cylinder 33; the drive frame 35 is fixedly installed at the bottom of the moving mold 21 and slides with the piston 34; the drive frame 35 consists of a fixed frame 351 and a first drive member 352 and a second drive member 353 relatively fixedly installed in the fixed frame 351; the fixed frame 351 is fixedly installed at the bottom of the moving mold 21; the first drive member 352 and the second drive member 353 are relatively fixedly installed at the bottom of the fixed frame 351; the distance between the first drive member 352 and the second drive member 353 is less than the distance between the first stroke position and the second stroke position.

[0031] When punching is required on the flue pipe, the flue pipe to be punched is first inserted axially into the fixed die 22, and the fixed die 22 axially limits the flue pipe to ensure the positional stability and coaxiality of the flue pipe during the punching process. Then, the moving die 21 is driven to move, so that the moving die 21 gradually approaches the fixed die 22 axially under the action of the driving mechanism. The axial displacement of the moving die 21 synchronously drives the punching head 23 set inside it to move radially inward. Finally, the punching head 23 performs radial punching on the wall of the flue pipe, thereby completing the punching process of the flue pipe.

[0032] During the process of the moving die 21 moving from the first stroke position to the second stroke position and completing the punching action, when the moving die 21 continues to move and reaches the third stroke position, the waste discharge module 3 immediately enters the working state. At this time, the waste discharge module 3 introduces the air drawn in and temporarily stored in the air chamber 31 during the return stroke phase, i.e., when the moving die 21 resets from the second stroke position to the first stroke position, into the first air passage 231 at a higher pressure through the exhaust port 32, and then sprays it directionally into the punching area to perform instantaneous high-pressure purging on the smoke pipe hole that has just been punched, so that the waste and debris formed by punching are quickly removed from the hole and discharged.

[0033] By linking the punching action with the waste removal action, high-pressure removal of punching waste is achieved through the punching stroke itself without the need for an external air source, significantly improving the cleanliness of the punching area and the reliability of the process.

[0034] During the process of driving the moving mold 21 to punch holes in the flue, since the drive frame 35 is fixedly set at the bottom of the moving mold 21, the axial movement of the moving mold 21 is synchronously transmitted to the piston 34 linked with it. When the moving mold 21 moves upward along the axial direction under the drive, the piston 34 moves upward accordingly and forms a volume change cooperation with the air storage cylinder 33, thereby generating a suction effect on the external air, allowing the air to enter the air chamber 31 through the air intake structure and be temporarily stored.

[0035] When the moving die 21 moves downward along the axial direction after completing the punching, the piston 34 moves downward synchronously to compress the air in the air chamber 31. During a specific stage when the piston 34 moves from the third stroke position to the second stroke position, the compressed air is discharged through the exhaust port 32 and merged into the first air passage 231 through the connecting pipe, and finally ejected in the form of a concentrated airflow for efficient discharge of punching waste.

[0036] Through the mechanical linkage between the moving mold 21 and the piston 34, the mechanical energy of stamping is converted into gas suction and compression energy, realizing the synchronous coordination of punching and gas supply, reducing system complexity and improving energy utilization efficiency.

[0037] By structurally setting a first driving member 352 and a second driving member 353, and making the distance between them smaller than the overall stroke range from the first stroke position to the second stroke position, the piston 34 does not participate in synchronous movement during the initial stroke stage of the moving mold 21. Only when the moving mold 21 is displaced to the preset third stroke position is the piston 34 driven to participate in compression or exhaust action.

[0038] This effectively avoids the reverse thrust generated by the compressed air in the air chamber 31 on the movement of the moving die 21 during the initial punching stage, thereby preventing gas resistance from interfering with the stamping stability and ensuring the complete output of the punching force. Through stroke segment control, the timing decoupling of the pneumatic function and the stamping function is achieved, ensuring both stamping stability and the instantaneous high efficiency of gas exhaust.

[0039] See Figure 4 As shown: The bottom side of the air storage cylinder 33 is also radially provided with an air inlet 331 and a one-way valve 332 coaxially fixed in the air inlet 331.

[0040] The air inlet 331 is used to guide external air into the air chamber 31 during the upward movement of the piston 34, thereby achieving active gas suction. To prevent the compressed gas from leaking backward from the air inlet 331 when the piston 34 moves downward and compresses and discharges the air in the air chamber 31, a one-way valve 332 is coaxially fixed inside the air inlet 331.

[0041] The one-way valve 332 allows air to enter the air chamber 31 in only one direction and automatically closes during the exhaust phase, thus ensuring that gas can only be discharged through the exhaust port 32. The one-way valve 332 effectively prevents gas backflow, improves the compression efficiency of the air chamber 31 and the intensity of the exhaust gas flow, and ensures the reliable discharge of punching waste.

[0042] See Figure 1 and Figure 5 As shown: The punching module 2 further includes a drive unit 24 that can drive the moving mold 21 to move axially and a limiting post 25 that is coaxially fixed in the fixed mold 22 and can limit the inner diameter of the smoke pipe; the drive unit 24 is horizontally fixed in the bottom of the frame 1 and the drive end passes through the frame 1 and is fixedly connected to the moving mold 21; the limiting post 25 is vertically fixed in the frame 1 and coaxially arranged in the fixed mold 22. The outer diameter of the limiting post 25 is smaller than the inner diameter of the fixed mold 22 and forms an annular gap between the limiting post 25 and the fixed mold 22 to allow the smoke pipe to be inserted.

[0043] The limiting post 25 is a hollow column structure with an open bottom, and its side wall has a through hole 251 for the punching head 23 to pass through. During operation, the operator only needs to insert the flue pipe to be punched coaxially into the annular gap formed by the fixed mold 22 and the limiting post 25 to quickly position the flue pipe. Then, the moving mold 21 is driven to move, so that the punching head 23 is radially advanced through the through hole 251 on the side wall of the limiting post 25, and finally punches the wall of the flue pipe.

[0044] The annular limiting structure formed by the limiting post 25 and the fixed mold 22 enables rapid clamping and stable positioning of the smoke pipe, reducing manual adjustment time and improving overall processing efficiency.

[0045] See Figure 5 As shown: The punching module 2 also includes a limiting strip 26 that can longitudinally limit the punching height of the smoke pipe; there are two limiting strips 26, which are vertically slidably disposed on the inner wall of the fixed mold 22.

[0046] In actual processing, when it is necessary to process smoke pipes of different lengths or with different punching heights, simply drive the limiting strip 26 to slide axially within the fixed mold 22 and lock it after adjusting it to the target height. At this time, after the smoke pipe is inserted, its bottom end will abut against the top of the limiting strip 26, thereby achieving precise limitation of the axial position of the smoke pipe.

[0047] The adjustable limit bar 26 structure enables rapid self-adjustment of the punching height, improving the equipment's adaptability to various specifications of flue pipes.

[0048] See Figures 5 to 7 As shown: The punching module 2 further includes a first wedge 27, a second wedge 28, and a connector 29; the first wedge 27 is fixedly disposed vertically on the inner wall of the moving mold 21; the second wedge 28 and the first wedge 27 are slidably engaged; the punching head 23 is fixedly disposed on the second wedge 28 through the connector 29, and multiple punching heads 23 are equidistantly disposed along the long side of the connector 29.

[0049] The second wedge 28 has a through-hole for communicating with the first air passage 231 inside the multiple stamping heads 23. When the drive unit 24 drives the moving mold 21 to move upward, the first wedge 27 fixedly disposed in the moving mold 21 synchronously drives the second wedge 28 to move, so that the stamping head 23 is guided along the wedge surface to radially retract in the moving mold 21, thereby moving away from the annular gap, which facilitates the insertion and removal of the smoke tube.

[0050] When the moving die 21 moves down again, the first wedge 27 and the second wedge 28 re-engage, driving the punch head 23 to move radially inward and approach the fixed die 22, completing the punching operation on the smoke pipe. The automatic retraction and extension of the punch head 23 is achieved through the wedge linkage structure, avoiding manual intervention and improving clamping safety and processing cycle time.

[0051] See Figure 3 As shown: The drive unit 24 is provided with a sliding frame 241 capable of longitudinally driving the moving mold 21 to slide longitudinally and a lever drive element 242 capable of driving the sliding frame 241 to slide longitudinally; the sliding frame 241 is slidably mounted on the frame 1 in a vertical state; the lever drive element 242 is horizontally fixed at the bottom of the frame 1 and its drive end is hinged to the bottom of the sliding frame 241.

[0052] The lever drive element 242 includes a first hinge 2421, a second hinge 2422, a drive rod, a third hinge 2423, and an electric push rod 2424. The drive rod is fixedly hinged to the bottom of the frame 1 via the first hinge 2421. The first hinge 2421 is located near the front end of the drive rod. The front end of the drive rod is fixedly connected to the bottom of the sliding frame 241 via the second hinge 2422. The electric push rod 2424 is fixedly mounted vertically at the bottom of the frame 1, and the drive end of the electric push rod 2424 is hinged to the rear end of the drive rod via the third hinge 2423.

[0053] When the moving die 21 needs to slide longitudinally, an external power source is used to drive the electric push rod 2424 in the lever drive element 242. The driving end of the electric push rod 2424 acts on the rear end of the drive rod via the third hinge 2423. The drive rod forms a lever structure with the front first hinge 2421 as the fulcrum, thereby amplifying the linear thrust of the push rod and transmitting it to the front end of the drive rod. The front end of the drive rod is connected to the bottom of the sliding frame 241 via the second hinge 2422, allowing the sliding frame 241 to extend and retract longitudinally within the frame 1, ultimately driving the moving die 21 to complete the high-pressure punching action. The lever amplification structure significantly increases the punching force of the moving die 21, meeting the requirements for high-strength flue gas pipe punching without increasing the driving power.

[0054] This invention not only enables array punching of flue pipes but also allows for structural coupling with the stamping stroke, enabling the punching action and waste discharge process to be completed automatically within the same working cycle.

[0055] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A punching device for a flue array, used for punching holes in flues, characterized in that, include: frame; A punching module is fixedly mounted on a frame. The punching module is equipped with a moving die and a fixed die, as well as a punching head that can radially penetrate the moving die and the fixed die to punch the smoke pipe. A first air passage is also coaxially opened inside the punching head to discharge the waste material after punching. When the moving die moves longitudinally upward to the first stroke, the punch head moves radially away from the fixed die. When the moving die moves longitudinally downward to the second stroke, the punch head moves radially through the fixed die to complete the punching. The waste discharge module is fixedly mounted on the frame, and the waste discharge module is equipped with... The air chamber draws in air when the moving mold moves from the second stroke position to the first stroke position, and has a third stroke position during the process of the moving mold moving from the first stroke position to the second stroke position; The exhaust port is used to discharge compressed air from the air chamber when the moving mold moves from the third stroke position to the second stroke position. The waste discharge module also includes an air storage cylinder, a piston capable of driving air into the air chamber, and a drive frame capable of driving the piston to slide between a first stroke position, a second stroke position, and a third stroke position. The gas storage cylinder is a hollow, arc-shaped chamber with an opening at the top, and its internal cavity constitutes the gas chamber. The piston is axially movable within the gas storage cylinder; The drive frame is fixedly mounted on the bottom of the moving mold and slides in cooperation with the piston; The drive frame consists of a fixed frame and a first drive component and a second drive component that are relatively fixedly disposed within the fixed frame; The fixing frame is fixedly installed at the bottom of the moving mold; The first driving member and the second driving member are fixedly disposed at the bottom of the fixed frame; the distance between the first driving member and the second driving member is less than the distance between the first stroke position and the second stroke position.

2. The punching device for a smoke pipe array according to claim 1, characterized in that, The bottom side of the gas storage cylinder is also radially provided with an air inlet and a one-way valve coaxially fixed in the air inlet.

3. The punching device for a smoke tube array according to claim 1, characterized in that, The punching module also includes a drive unit that can drive the moving mold to move axially and a limiting post that is coaxially fixed in the fixed mold and can limit the inner diameter of the smoke pipe. The drive unit is horizontally fixedly installed at the bottom of the frame, and the drive end passes through the frame and is fixedly connected to the moving mold; The limiting post is fixedly mounted vertically on the frame and coaxially within the fixed mold. The outer diameter of the limiting post is smaller than the inner diameter of the fixed mold, and together with the fixed mold, they form an annular gap that allows the smoke pipe to be inserted.

4. The punching device for a smoke pipe array according to claim 3, characterized in that, The punching module also includes a limiting strip that can longitudinally limit the punching height of the flue pipe; Two limiting strips are provided, and the two limiting strips are vertically slidably disposed relative to each other on the inner wall of the fixed mold.

5. The punching device for a smoke pipe array according to claim 3, characterized in that, The punching module also includes a first wedge, a second wedge, and a connector; The first wedge is fixedly mounted vertically on the inner wall of the moving mold; The second wedge and the first wedge are in sliding engagement; The stamping head is fixedly mounted on the second wedge block by a connector, and multiple stamping heads are equidistantly arranged along the long side of the connector.

6. The punching device for a smoke pipe array according to claim 3, characterized in that, The drive unit is equipped with a sliding frame capable of longitudinally driving the moving mold to slide longitudinally and a lever drive element capable of driving the sliding frame to slide longitudinally. The sliding frame is vertically slidably mounted on the frame; The lever drive element is horizontally fixed at the bottom of the frame and its drive end is hinged to the bottom of the sliding frame.

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