A high-precision air duct cutting machine

Abstract

The present invention discloses a high-precision duct cutting machine, which belongs to the technical field of duct manufacturing equipment, and comprises a cutting structure and a supporting structure, wherein the supporting structure comprises a supporting body and two supporting assemblies, wherein the supporting assembly comprises a rectangular central seat, the peripheral sides of the central seat are hinged with supporting rods, the ends of the supporting rods are hinged with supporting seats, and push rods of telescopic structure are arranged between adjacent supporting seats; a rotating seat is coaxially connected to the middle part of the supporting body, a rotating device for driving the supporting body to rotate is arranged on the rotating seat, and an adjusting rod with a coaxial line is threadedly connected through the rotating seat and the central seat; a support rod parallel to the adjusting rod is arranged on one side of the supporting body, a deflection motor is arranged at the end of the support rod, a push rod is hinged at the output end of the deflection motor, and the cutting structure is arranged at the end of the push rod; the problem of low cutting accuracy when the existing duct cutting equipment cuts the duct is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of air duct manufacturing equipment, and specifically relates to a high-precision air duct cutting machine. Background Art

[0002] The air duct is a pipe system used for air delivery and distribution. It is made of various metal materials and can be rectangular or circular according to its shape. During the installation process, the formed air duct needs to be cut as a whole, and a part of the air duct that is too long needs to be cut off to make the air duct meet the use regulations. In addition, when the air duct is connected to the branch pipe, the side wall of the formed air duct needs to be cut to open the opening. Although the existing air duct cutting equipment can cut the air duct, the cutting accuracy is low, especially when opening the side wall of the air duct. Summary of the invention

[0003] In view of this, the present invention discloses a high-precision air duct cutting machine, which aims to solve the problem of low cutting precision when the existing air duct cutting equipment cuts the air duct.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A high-precision air duct cutting machine comprises a cutting structure and a supporting structure, the supporting structure comprising a supporting body and two supporting assemblies, the supporting assembly comprising a rectangular center seat, the circumferential sides of the center seat are hinged with support rods, the ends of the support rods are hinged with support seats, and push rods of telescopic structure are arranged between adjacent support seats; a rotating seat is coaxially connected to the middle part of the supporting body, a rotating device for driving the supporting body to rotate is arranged on the rotating seat, and a coaxial adjusting rod is threadedly connected through the rotating seat and the center seat; a support rod parallel to the adjusting rod is arranged on one side of the supporting body, a deflection motor is arranged at the end of the support rod, a push rod is hinged at the output end of the deflection motor, a locking pin for limiting the rotation of the push rod is arranged at the connection between the support rod and the push rod, the cutting structure is arranged at the end of the push rod, and the push rod, support rod and push rod are all telescopic structures.

[0006] In this solution, the support components at both ends of the cutting device are used to form multi-point supports on the inner wall of the air duct, which can effectively stabilize the cutting device and prevent the cutting device from shaking and affecting the cutting accuracy. In addition, the multi-point support method can be applied to various air ducts, and can also perform length cutting and side wall opening operations, and has a wide range of uses.

[0007] Furthermore, an auxiliary support structure is provided between adjacent support seats, and the auxiliary support structure includes two mounting seats rotatably connected to the corresponding side walls of the support seats, a latch is detachably connected between the mounting seats and the support seats, a plurality of support parts are provided between the mounting seats, and connecting members with telescopic structures are provided between adjacent support parts; mounting grooves are provided at both end surfaces of the support parts, a vertical support shaft is rotatably connected in the mounting groove, a torsion spring is provided between the support shaft and the mounting groove, and both ends of the connecting member are fixedly connected to the side walls of the adjacent support shaft; the side walls of the support parts adjacent to the mounting seats are hinged with end rods, and torsion springs are also provided at the hinges, the ends of the end rods are fixedly connected to the adjacent support shafts, and a cylinder for pushing the end rods to deflect is hinged on the mounting seats.

[0008] In this solution, an auxiliary support structure is provided to support the side wall area of ​​the air duct between the two support seats, increase the contact points, and prevent the support force of the support seat from being concentrated, which causes the side wall of the air duct near the support seat to be over-stressed and deformed. In addition, when the air duct is circular, the end rod is pushed by the cylinder, and the auxiliary support structure is driven to bend toward the side wall of the air duct through the expansion and contraction of the connecting piece and the cooperation of the torsion spring, so that the support part of the auxiliary support structure fits the curved side wall of the air duct to form a stable support.

[0009] Furthermore, an air groove is coaxially opened at the end of the support part, a suction cup connected to the air groove is arranged at the end of the support part, a through groove connected to the air groove is vertically opened on the support part, a pressure plate is vertically slidably connected in the through groove, a conduction rod is fixedly connected to the upper end of the pressure plate, and a synchronization rod of a telescopic structure is arranged between adjacent conduction rods; a hydraulic cylinder facing the end rod is arranged on the mounting seat, and a synchronization rod is also hinged between the end of the hydraulic cylinder and the adjacent conduction rod.

[0010] In this solution, by providing a suction cup, the support portion applies an inward support force to the side wall of the air duct, thereby preventing the side wall of the air duct from deforming outward due to the outward force of the cutting component, thereby improving the cutting accuracy of the air duct.

[0011] Furthermore, the through groove passes through the air groove, and a sealing plate is slidably connected to the end of the through groove. The sealing plate and the pressure plate are symmetrically arranged about the air groove. Reversing cylinders are obliquely arranged on both sides of the conduction rod, and a rotating shaft rotatably connected to the middle of the reversing cylinder is penetrated, and the rotating shaft is perpendicular to the conduction rod. The end of the rotating shaft is fixedly connected to the side wall of the through groove, and a reversing gear located inside the reversing cylinder is rotatably connected to the rotating shaft. Tooth plates are meshed on both sides of the reversing gear, and the tooth plates are slidably connected to the corresponding side walls of the reversing cylinder, and the opposite ends of the tooth plates are hinged to the corresponding sealing plates and pressure plates.

[0012] Furthermore, a positioning gear is coaxially fixed on the rotating shaft, positioning grooves facing the positioning gear are provided on both sides of the through slot, a clamping plate is slidably connected in the positioning slot, the end of the clamping plate is arc-shaped, and an elastic reset member is provided between the clamping plate and the positioning slot.

[0013] Furthermore, the pressing plate, the sealing plate and the clamping plate are provided with a rubber layer.

[0014] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure when the side wall of the air duct is opened in an embodiment of the present invention;

[0018] Figure 3 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0019] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0020] Figure 5 A longitudinal cross-sectional view of the support portion in an embodiment of the present invention

[0021] Figure 6 for Figure 5 Enlarged schematic diagram of point C in the middle.

[0022] The markings in the accompanying drawings are as follows: cutting structure 1, supporting body 2, center seat 3, supporting rod 4, supporting seat 5, pushing rod 6, rotating seat 7, adjusting rod 8, supporting rod 9, deflection motor 10, pushing rod 11, mounting seat 12, supporting part 13, connecting part 14, end rod 15, supporting shaft 16, cylinder 17, air groove 18, suction cup 19, through groove 20, pressure plate 21, conduction rod 22, synchronization rod 23, hydraulic cylinder 24, rotating shaft 25, reversing gear 26, tooth plate 27, reversing cylinder 28, clamping plate 29, positioning gear 30, sealing plate 31. DETAILED DESCRIPTION

[0023] like Figures 1 to 6 As shown:

[0024] A high-precision air duct cutting machine comprises a cutting structure 1 and a supporting structure, wherein the supporting structure comprises a supporting body 2 and two supporting assemblies, wherein the supporting assembly comprises a rectangular central seat 3, wherein the central seat 3 is hinged with supporting rods 4 on the periphery thereof, wherein the ends of the supporting rods 4 are hinged with supporting seats 5, and push rods 6 are arranged between adjacent supporting seats 5; a rotating seat 7 is coaxially rotatably connected to the middle part of the supporting body 2, wherein a rotating device for driving the supporting body 2 to rotate is arranged on the rotating seat 7, and an adjusting rod 8 coaxially connected with threads is threadedly passed through the rotating seat 7 and the central seat 3; a support rod 9 parallel to the adjusting rod 8 is arranged on one side of the supporting body 2, a deflection motor 10 is arranged at the end of the support rod 9, and a push rod 11 is hinged at the output end of the deflection motor 10, and a locking pin (conventional technical means, so not drawn in the figure) for limiting the rotation of the push rod 11 is arranged at the connection between the support rod 9 and the push rod 11, and the cutting structure 1 is arranged at the end of the push rod 11, and the push rod 6, the support rod 9 and the push rod 11 are all telescopic structures, and an electric telescopic rod is adopted in this embodiment.

[0025] In this solution, when the air duct needs to be cut as a whole, the support body 2 and the support assembly are installed to ensure that the support body 2 is located between the two center seats 3, the top rod 11 is deflected so that the top rod 11 is perpendicular to the adjusting rod 8, and then the deflection of the top rod 11 is limited by the locking pin; the device is placed in the air duct as a whole, the adjusting rod 8 is parallel to the length direction of the air duct, and it is ensured that the cutting assembly is facing the cutting position; when the air duct is a circular air duct, all the push rods 6 of the two support assemblies are controlled to extend at the same time, and the push rods 6 push the support seats 5 at both ends to drive the support rods 4 to deflect until the support seats 5 are both against the side walls of the air duct; when the air duct is a rectangular air duct, the horizontal push rods 6 in the two support assemblies are controlled to extend at the same time until the support seats 5 are against the two sides of the air duct, and then the longitudinal push rods 6 in the two support assemblies are controlled to extend at the same time until the support seats 5 are against the corners of the air duct. At this time, the support body 2 is driven to rotate by the rotating device. In this process, the extension and retraction of the support rods 9 are used to ensure that the cutting assembly contacts the side walls of the air duct and then the cutting operation is performed.

[0026] When it is necessary to make an opening on the side wall of the air duct, the position of the support body 2 and one of the support assemblies is exchanged, the top rod 11 is deflected, so that the top rod 11 is parallel to the adjusting rod 8, and the deflection of the top rod 11 is limited by the locking pin, and the device is placed in the air duct as a whole, the adjusting rod 8 is perpendicular to the length direction of the air duct, and ensures that the cutting assembly is facing the opening position of the air duct, and then the push rod 6 is extended and retracted to make the support seats 5 of the two support assemblies respectively abut against the side wall of one side of the air duct; when a circular opening is required, the cutting assembly is kept against the side wall of the air duct by extending and retracting the support rod 9 and the top rod 11, and it is only necessary to drive the support body 2 to rotate; when a rectangular opening is required, the cutting assembly is kept against the side wall of the air duct by extending and retracting the support rod 9 and the top rod 11, and the top rod 11 is driven to deflect by the deflection motor 10, thereby driving the cutting assembly to perform linear cutting, and then the support body 2 is rotated multiple times to adjust the cutting direction, and the cutting operation of the rectangular opening can be completed.

[0027] In this solution, the support components at both ends of the cutting device are used to form multi-point supports on the inner wall of the air duct, which can effectively stabilize the cutting device and prevent the cutting device from shaking and affecting the cutting accuracy. In addition, the multi-point support method can be applied to various air ducts, and can also perform length cutting and side wall opening operations, and has a wide range of uses.

[0028] In this embodiment, an auxiliary support structure is also provided between adjacent support seats 5, and the auxiliary support structure includes two mounting seats 12 rotatably connected to the corresponding side walls of the support seats 5, and a latch is detachably connected between the mounting seats 12 and the support seats 5 (conventional technical means, so it is not drawn in the figure), and a plurality of support parts 13 are provided between the mounting seats 12, and a connecting piece 14 of a telescopic structure is provided between adjacent support parts 13; mounting grooves are provided on both end surfaces of the support part 13, and a vertical support shaft 16 is rotatably connected in the mounting groove, and a torsion spring is provided between the support shaft 16 and the mounting groove, and both ends of the connecting piece 14 are fixedly connected to the side walls of the adjacent support shaft 16; the side walls of the support part 13 adjacent to the mounting seat 12 are hinged with end rods 15, and torsion springs are also provided at the hinges, and the ends of the end rods 15 are fixedly connected to the adjacent support shafts 16, and a cylinder 17 for pushing the end rods 15 to deflect is hinged on the mounting seat 12.

[0029] In this solution, when the air duct is cut as a whole, the adjustment seat is rotated to make the support part 13 parallel to the adjustment rod 8; when the side wall of the air duct is opened, the adjustment seat is rotated perpendicular to the support part 13 and parallel to the adjustment rod 8; when the support seat 5 moves, the telescopic structure of the connecting member 14 ensures that the auxiliary support structure remains connected to the support seat 5, and when the support seat 5 contacts the side wall of the air duct, the end of the support part 13 also contacts the side wall of the air duct; by setting up an auxiliary support structure, the side wall area of ​​the air duct between the two support seats 5 is supported, and the contact points between the device and the side wall of the air duct are increased to prevent the support force of the support seat 5 from being concentrated, which would cause the side wall of the air duct near the support seat 5 to be excessively deformed.

[0030] In addition, when the air duct is circular, the end rod 15 is pushed by the cylinder 17, and the auxiliary support structure is driven to bend toward the side wall of the air duct through the expansion and contraction of the connecting piece 14 and the cooperation of the torsion spring, so that the support part 13 of the auxiliary support structure fits with the curved side wall of the air duct to form a stable support.

[0031] In this embodiment, an air groove 18 is coaxially opened at the end of the support part 13, and a suction cup 19 connected to the air groove 18 is arranged at the end of the support part 13. A through groove 20 connected to the air groove 18 is vertically opened on the support part 13, and a pressure plate 21 is vertically slidably connected in the through groove 20. A conduction rod 22 is fixedly connected to the upper end of the pressure plate 21, and a synchronization rod 23 of a telescopic structure is arranged between adjacent conduction rods 22; a hydraulic cylinder 24 facing the end rod 15 is arranged on the mounting seat 12, and a synchronization rod 23 is also hinged between the end of the hydraulic cylinder 24 and the adjacent conduction rod 22.

[0032] In this solution, when the end of the support part 13 contacts the side wall of the air duct, the suction cup 19 also contacts the side wall of the air duct; at this time, the synchronous rod 23 is pushed to move by the hydraulic cylinder 24, and the synchronous rod 23 drives the transmission rod 22 to move in the direction away from the support part 13, and the transmission rod 22 drives the pressure plate 21 to move synchronously, so that the area where the through groove 20 is connected to the air groove 18 is expanded, resulting in a decrease in the pressure inside the suction cup 19, and a pressure difference between the inside and outside of the suction cup 19, so that the suction cup 19 is adsorbed on the side wall of the air duct, so that the support part 13 applies an inward supporting force to the side wall of the air duct, and prevents the side wall of the air duct from being deformed outward due to the outward force of the cutting component, thereby improving the cutting accuracy of the air duct. In addition, when the cutting component is cutting, coolant is sprayed on the cutting position to prevent heat accumulation on the side wall of the air duct, which causes the suction cup 19 to deform and affects the stability of the suction of the suction cup 19.

[0033] In this embodiment, the through groove 20 passes through the air groove 18, and a sealing plate 31 is slidably connected to the end of the through groove 20. The sealing plate 31 and the pressure plate 21 are symmetrically arranged about the air groove 18. Reversing cylinders 28 are obliquely arranged on both sides of the conduction rod 22. A rotating shaft 25 rotatably connected to the middle of the reversing cylinder 28 is penetrated, and the rotating shaft 25 is perpendicular to the conduction rod 22. The end of the rotating shaft 25 is fixedly connected to the side wall of the through groove 20, and a reversing gear 26 located inside the reversing cylinder 28 is rotatably connected to the rotating shaft 25. Tooth plates 27 are meshed on both sides of the reversing gear 26. The tooth plates 27 are slidably connected to the corresponding side walls of the reversing cylinder 28, and the opposite ends of the tooth plates 27 are hinged to the corresponding sealing plates 31 and the pressure plate 21.

[0034] When the conduction rod 22 drives the pressure plate 21 to move upward, the pressure plate 21 drives the reversing cylinder 28 to deflect through the corresponding tooth plate 27, and drives the tooth plate 27 to move relative to the reversing cylinder 28 at the same time. The tooth plate 27 drives the other tooth plate 27 to move in the opposite direction relative to the reversing cylinder 28 through the engagement of the reversing gear 26. The other tooth plate 27 drives the sealing plate 31 to move in the opposite direction relative to the pressure plate 21, thereby accelerating the expansion of the connecting area between the through groove 20 and the air groove 18, reducing the pressure in the suction cup 19 more quickly, and increasing the pressure difference between the inside and outside of the suction cup 19, thereby strengthening the adsorption force of the suction cup 19 on the side wall of the air duct and improving the stability of the auxiliary support structure in supporting the side wall of the air duct.

[0035] In this embodiment, a positioning gear 30 is coaxially fixed on the rotating shaft 25, and positioning grooves facing the positioning gear 30 are opened on both sides of the through groove 20. A clamping plate 29 is slidably connected in the positioning groove, and the end of the clamping plate 29 is arc-shaped. An elastic reset member is arranged between the clamping plate 29 and the positioning groove.

[0036] During the adsorption process of the suction cup 19, the sealing plate 31 squeezes the arc-shaped end of the clamping plate 29 when it moves, causing the clamping plate 29 to move toward the positioning gear 30 until the clamping plate 29 clamps the positioning gear 30 to limit the rotation of the support shaft 16, thereby limiting the deflection of the connecting member 14, thereby strengthening the locking of the auxiliary support structure and preventing the auxiliary support structure from bending, thereby affecting the support stability of the side wall of the air duct.

[0037] In this embodiment, a rubber layer is provided on the pressing plate 21 , the sealing plate 31 and the clamping plate 29 .

[0038] The rubber layer is provided to improve the sealing performance of the suction cup 19 during adsorption, thereby ensuring the connection strength during adsorption. Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the present invention. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to the form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A high-precision air duct cutting machine, characterized in that: It includes a cutting structure and a supporting structure, the supporting structure includes a supporting body and two supporting components, the supporting component includes a rectangular central seat, the peripheral sides of the central seat are hinged with supporting rods, the ends of the supporting rods are hinged with supporting seats, and push rods with telescopic structures are arranged between adjacent supporting seats; a rotating seat is coaxially connected to the middle part of the supporting body, a rotating device for driving the supporting body to rotate is arranged on the rotating seat, and a coaxial adjusting rod is threadedly connected between the rotating seat and the central seat; a support rod parallel to the adjusting rod is arranged on one side of the supporting body, a deflection motor is arranged at the end of the support rod, and the output of the deflection motor The end is hinged with a push rod, and a locking pin is provided at the connection between the support rod and the push rod to limit the rotation of the push rod. The cutting structure is arranged at the end of the push rod, and the push rod, support rod and push rod are all telescopic structures; an auxiliary support structure is also arranged between adjacent support seats, and the auxiliary support structure includes two mounting seats rotatably connected to the corresponding side walls of the support seat, and a latch is detachably connected between the mounting seat and the support seat, and a plurality of support parts are arranged between the mounting seats, and connecting parts of the telescopic structure are arranged between adjacent support parts; mounting grooves are provided on both end surfaces of the support part, and a vertically arranged support shaft is rotatably connected in the mounting groove, and the support shaft is connected to the mounting groove A torsion spring is arranged between the two ends of the connecting piece, and the two ends of the connecting piece are fixedly connected to the side walls of the adjacent support shafts; the side walls of the support parts adjacent to the mounting seat are hinged with end rods, and torsion springs are also arranged at the hinges, the ends of the end rods are fixedly connected to the adjacent support shafts, and a cylinder for pushing the end rods to deflect is hinged on the mounting seat; an air groove is coaxially opened at the end of the support part, a suction cup connected to the air groove is arranged at the end of the support part, a through groove connected to the air groove is vertically opened on the support part, a pressure plate is vertically slidably connected in the through groove, a conduction rod is fixedly connected to the upper end of the pressure plate, and a synchronization rod of a telescopic structure is arranged between adjacent conduction rods; a synchronous rod towards the end is arranged on the mounting seat A hydraulic cylinder of a rod, a synchronous rod is also hinged between the end of the hydraulic cylinder and the adjacent conduction rod; the through groove passes through the air groove, and a sealing plate is slidably connected to the end of the through groove, and the sealing plate and the pressure plate are symmetrically arranged about the air groove, and reversing cylinders are obliquely arranged on both sides of the conduction rod, and a rotating shaft connected to the reversing cylinder for rotation is passed through the middle of the reversing cylinder, and the rotating shaft is perpendicular to the conduction rod, and the end of the rotating shaft is fixedly connected to the side wall of the through groove, and a reversing gear located inside the reversing cylinder is rotatably connected on the rotating shaft, and tooth plates are meshed on both sides of the reversing gear, and the tooth plates are slidably connected to the corresponding side walls of the reversing cylinder, and the opposite ends of the tooth plates are hinged to the corresponding sealing plates and pressure plates.

2. A high-precision air duct cutting machine according to claim 1, characterized in that: A positioning gear is coaxially fixed on the rotating shaft, positioning grooves facing the positioning gear are provided on both sides of the through slot, a clamping plate is slidably connected in the positioning slot, the end of the clamping plate is arc-shaped, and an elastic reset member is provided between the clamping plate and the positioning slot.

3. A high-precision air duct cutting machine according to claim 2, characterized in that: The pressing plate, the sealing plate and the clamping plate are provided with rubber layers.

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