A ventilation pipe production equipment for air coolers

Abstract

The present invention discloses a ventilation pipe production equipment for air coolers, comprising an uncoiler, a grooving device, a first conveyor line, a shearing crane and a second conveyor line. The second conveyor line is provided with a smoothing mechanism on a side opposite to the shearing crane. When the cam contacts the roller at the lowest point away from the axis center, the ventilation pipe production equipment for air coolers drives the pressing plate to rise, so that after the pressing plate rises, the driving push rod lifts the sleeve rod up, and finally the rising transmission gear and the changing transmission gear are meshed, so that the transmission direction of the driving source can be reversed, the screw rod is engaged and the driving block can be raised up with the movable block to return to the original position. When the intermittent push roller cooperates with the grinding disc to feed again, the whole device is repeatedly operated to smooth the plate in sections, so that no slipping occurs on the outer ring of the roller during the speed and line change process.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation duct production equipment, in particular to ventilation duct production equipment for air coolers. Background Art

[0002] Ventilation ducts are metal or composite pipes used in ventilation and air-conditioning projects in industrial and civil buildings. They are a kind of municipal infrastructure designed to allow air circulation and reduce the concentration of harmful gases.

[0003] The plates, profiles and other main finished materials used in the manufacture and installation of air ducts shall comply with the current national standards for design and related products, and shall be subject to factory inspection certificates. Materials entering the site shall be inspected and accepted in accordance with current national standards. Ventilation ducts are classified by material: generally: steel plate ducts (ordinary steel plates), galvanized sheet (tinplate) ducts, stainless steel ducts, fiberglass ducts, plastic ducts, composite ducts, color steel sandwich insulation board ducts, double-sided aluminum foil insulation ducts, single-sided color steel insulation ducts, rubber-coated cloth ducts (such as mine air ducts), mine plastic ducts, etc.

[0004] The existing production process of sheet metal uses multi-line transportation, and the speeds of multiple sections of transportation equipment are inconsistent. Different processing procedures are used in each section of the conveyor line. In one of the procedures, the sheet is slotted by a slotting machine. During the slotting operation, the sheet is pressed down on the roller to form multiple slots above the sheet, causing the sheet to bend upward and roll inward. Therefore, during transportation, the contact points between the bottom of the sheet and the conveyor rollers on the next section of the conveyor line are reduced, and the contact points between the sheet and the outer ring of the roller are reduced, resulting in fewer support points. As shown in Figure 11, there is a chance that the outer ring of the roller will slip during the speed and line change process, and a tilted state may occur. Although the tilt is small, it will affect the alignment of the sheet and affect the subsequent welding, so it needs to be improved during operation. To this end, we propose a ventilation duct production equipment for air coolers. Summary of the invention

[0005] The object of the present invention is to provide a ventilation duct production device for air coolers to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ventilation pipe production equipment for a cold air blower, comprising an unwinder, a slotting device, a first conveyor line, a shearing crane and a second conveyor line, the second conveyor line is provided with a smoothing mechanism on the side opposite to the shearing crane, intermittent driving devices are installed on both sides of the smoothing mechanism, a fixed bracket is provided on the top of the smoothing mechanism, a pressing device is installed at the center bottom of the fixed bracket, and the intermittent driving device is connected to a line changing assembly for adjusting the lifting and lowering of the adjustment device through a belt; the pressing device comprises a sleeve rod provided at the center bottom of the fixed bracket, a plunge screw sleeved at the bottom of the sleeve rod, a fixed block fixed to the bottom of the fixed bracket, a pair of side support rods fixed on both sides of the fixed block, a driving block slidably connected to each side support rod, a movable block threadedly connected to the plunge screw, a pair of transmission rods that penetrate the movable block and pass through each driving block at both ends, and a pressing platform rotatably connected to each side support rod near one end of the plate, the intermittent driving device is used as a driving source, and then the pressing device and the line changing assembly are controlled, so that the device obtains synchronization at the same time, which facilitates the device to smooth the plate.

[0007] Preferably, an adjustment device for changing the forward and reverse rotation of the immersed screw rod is provided in the middle of the fixed bracket, the adjustment device includes a second rotating disk coaxially connected to the first rotating disk, a bevel gear rod driven by the second rotating disk and installed on the top of the fixed bracket, a driving disk perpendicular to the axis of the bevel gear rod and arranged on the top of the fixed bracket, a semi-meshing toothed belt sleeved on the driving disk and the outer ring of the sleeve rod, a downward pressure transmission gear sleeved on the middle of the sleeve rod, a plurality of shafts are connected and meshed side by side with the direction-changing transmission gear on the top of the fixed bracket and a rising transmission gear sleeved on the bottom of the sleeve rod, a limit rod for limiting the transmission of the semi-meshing toothed belt at the top of each direction-changing transmission gear, by meshing the semi-meshing toothed belt with the downward pressure transmission gear and the rising transmission gear in different time periods, the immersed screw rod can be reversed forward and reversed, which is beneficial for the device to complete the inability to work within different time limits and improve the continuity of the device.

[0008] Preferably, the line changing assembly includes a pair of first support plates arranged on one side of each fixed plate, a pair of first rotating disks arranged on the first support plate with the first gear as the driving force and controlled by the transmission of the belt, a cam arranged in the middle of the long rod between the pair of first rotating disks, a pair of connecting heads movably arranged on opposite sides of the two first support plates, a roller arranged in the middle of the long rod between the pair of connecting heads, a return spring arranged at the bottom of each connecting head, and a pair of second support plates arranged on the fixed bracket for supporting the weight of the bottom of the connecting head; wherein, the first rotating disk drives the cam to rotate and drive the connecting head to move on the fixed plate, and when the cam rotates to press the roller down, the connecting head drops, which is convenient for sinking into the forward rotation of the screw rod, and can also make the outer ring of the cam and the farthest point of the axis synchronously match the pressing device to contact the plate.

[0009] Preferably, a connecting rod is installed at the bottom of each connecting head, and a pressing plate is installed at the bottom of the two connecting rods. At least two rollers are installed on both sides of the pressing plate, and a pair of top rods are installed on the top of the pressing plate to contact the bottom of the sleeve rod. When the rollers are pressed down, they contact the plate to facilitate compacting the edge of the plate.

[0010] Preferably, the intermittent driving device includes a pair of fixed plates arranged on both sides of one end of the second conveying line, a first gear arranged on the top of one side of one of the fixed plates, a pair of intermittent push rollers arranged on the top of the opposite surfaces of the two fixed plates, a second gear arranged at the bottom of the fixed plates and meshing with the first gear, and a pair of matching grinding discs arranged at the bottom of the opposite surfaces of the two fixed plates, and the first gear and the pair of intermittent push rollers and the second gear and the pair of matching grinding discs are all rotatably connected together through a rotating rod; wherein, both sides of the plate pass between the intermittent push rollers and the matching grinding discs, the raised outer ring of the intermittent push rollers fits the upper part of the plate, and the intermittent push of the plate between the intermittent push rollers and the matching grinding discs is beneficial to the stability of the plate during transportation.

[0011] Preferably, a plurality of cylinders are installed on the upper part of the grooving device, a pressure plate is installed at the bottom of the plurality of cylinders, and a plurality of crimping knives are installed on the pressure plate. When the plurality of crimping knives are pressed down, it is beneficial to squeeze a plurality of notches on the plate, and grooving at the same time is beneficial to increase the efficiency of the production line.

[0012] Preferably, a flat support plate is installed at the bottom between the two fixed plates, and a slot corresponding to each crimping knife is installed on the flat support plate. The position of the slot is flush with the shearing crane to prevent the pressing device from misaligning the plate during smoothing, causing the plate to be over-smoothed and bent in the direction of the plate.

[0013] Preferably, the outer ring of the intermittent push roller is made of anti-skid rubber to prevent the plate from slipping during intermittent transmission. Therefore, the anti-skid protrusions on the outer ring of the intermittent push roller are provided to facilitate the transmission of the plate.

[0014] Preferably, the inner ring of the semi-meshing toothed belt is provided with a plurality of teeth, the width and distribution range of the teeth are half of those of the semi-meshing toothed belt and are located in the middle of its inner ring. The driving disk is composed of two rings of equal diameter and a buckle ring with a diameter smaller than the two rings, which is conducive to the forward and reverse rotation of the pressing device and facilitates the lifting and lowering of the pressing device.

[0015] Preferably, a line-changing transport track is installed at one end of the planar support plate, and damping rods are installed on both sides of one end of the line-changing transport track to facilitate the flatness detection of the plate after it is smoothed.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention uses the first gear or the second gear as the driving source, so that when the plate is fed between the intermittent push roller and the matching grinding disc, the plate can be driven to rotate with the intermittent pushing of the plate to make the movable block descend, and the driving block can follow the movable block to descend, and then the pressing platform and the movable block are synchronously descended to press the plate down. When the cam is in contact with the roller at the lowest point of the axis, the driving connecting head drives the pressing plate to rise, so that after the pressing plate rises, the driving push rod lifts the connecting rod up, and finally the rising transmission gear and the changing direction transmission gear are meshed, so that the transmission direction of the driving source can be reversed, the screw rod is reversed, and the driving block can follow the movable block to rise back to the original position. When the intermittent push roller feeds between the matching grinding discs again, the whole device is repeatedly operated to smooth the plate in sections, so that no slipping occurs on the outer ring of the roller during the speed and line change process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the intermittent driving device of the present invention;

[0020] Figure 3 This is a schematic diagram of a line changing assembly of the present invention;

[0021] Figure 4 A schematic diagram of point B of the present invention;

[0022] Figure 5 It is a schematic diagram of point A of the present invention;

[0023] Figure 6 This is a schematic diagram of a planar support plate of the present invention;

[0024] Figure 7 It is a schematic diagram of point C of the present invention;

[0025] Figure 8 It is a structural schematic diagram of the pressing device of the present invention;

[0026] Fig. 9 It is a schematic diagram of a part of the adjusting device of the present invention;

[0027] Fig.10 This is a schematic diagram of the disassembled structure of part of the adjusting device of the present invention;

[0028] Fig.11 This is a schematic diagram of the existing plate after pressing in the present invention;

[0029] Fig.12 It is a top view schematic diagram of the sleeve connecting rod and the embedded screw rod of the present invention.

[0030] In the figure: 1-unwinder; 2-grooving device; 201-cylinder; 202-crimping knife; 3-first conveyor line; 4-cutting crane; 5-second conveyor line; 6-smoothing mechanism; 7-line-changing transport track; 701-damping rod; 8-fixed bracket; 9-first gear; 10-second gear; 11-intermittent push roller; 12-matching grinding disc; 13-fixed plate; 14-first rotating disc; 15-cam; 16-roller; 17-first support plate; 18-connector; 19-second support Plate; 20-reset spring; 21-press plate; 22-roller; 23-plane support plate; 24-second rotating disk; 25-bevel gear rod; 26-driving disk; 27-semi-meshing toothed belt; 28-downward pressure transmission gear; 29-upward transmission gear; 30-direction change transmission gear; 31-limiting rod; 32-sleeve rod; 33-sinking screw rod; 34-thrust rod; 35-fixed block; 36-movable block; 37-transmission rod; 38-side support rod; 39-driving block; 40-downward pressure platform. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-12 The present invention provides a technical solution: a ventilation pipe production equipment for a cold air blower, comprising an unwinding machine 1, a slotting device 2, a first conveyor line 3, a shearing crane 4 and a second conveyor line 5, wherein the second conveyor line 5 is provided with a smoothing mechanism 6 on the side opposite to the shearing crane 4, and intermittent driving devices are installed on both sides of the smoothing mechanism 6, and a fixed bracket 8 is provided on the top of the smoothing mechanism 6, and a pressing device is installed at the bottom of the center of the fixed bracket 8, and the intermittent driving device is connected to a variable line component for adjusting the lifting and lowering of the adjustment device through a belt; in the scheme, the pressing device of the smoothing mechanism 6 is used to smooth the plate after bending and slotting, so that the plate can be smoothly produced, as follows:

[0033] The pressing device includes a sleeve rod 32 arranged at the center bottom of the fixed bracket 8, a screw rod 33 sleeved at the bottom of the sleeve rod 32, a fixed block 35 fixed to the bottom of the fixed bracket 8, a pair of side support rods 38 fixed on both sides of the fixed block 35, a driving block 39 slidably connected to each side support rod 38, a movable block 36 threadedly connected to the screw rod 33, a pair of transmission rods 37 that penetrate the movable block 36 and pass through each driving block 39 at both ends, and a pressing platform 40 rotatably connected to each side support rod 38 near one end of the plate. When the rod 32 rotates forward, it drives the screw rod 33 to rotate. The rotation of the screw rod 33 can make the movable block 36 descend. Since a pair of driving blocks 39 are pulled by the transmission rod 37, when the movable block 36 descends, the driving block 39 can be driven to descend synchronously at the same time. When the driving block 39 descends, it slides down along the side support rod 38. Then the pressing platform 40 will slide along the upper part of the plate and apply vertical downward pressure to the top of the plate when sliding. It can be seen from Figure 8 that the center of the plate is installed at the bottom of the movable block 36 and is pressed down synchronously by the lower pressure plate, so that the plate can be smoothed.

[0034] A flat support plate 23 is installed at the bottom between the two fixed plates 13, and a groove corresponding to each crimping knife 202 is installed on the flat support plate 23. The groove position is flush with the shearing crane 4. It can be seen from Figures 1 and 6 that the groove opened by the crimping knife 202 on the plate corresponds to the groove on the flat support plate 23, so that the plate can be limited when it moves forward to prevent the plate from being misplaced when the pressing platform 40 is pressed down, and the groove on the flat support plate 23 is used to limit the upper groove of the plate. In the process of smoothing the pressing platform 40, the groove on the flat support plate 23 can also be further prevented from being damaged.

[0035] The middle part of the fixed bracket 8 is provided with an adjustment device for changing the forward and reverse rotation of the screw rod 33, and the adjustment device includes a second rotating disk 24 coaxially connected to the first rotating disk 14, a bevel gear rod 25 driven by the second rotating disk 24 and installed on the top of the fixed bracket 8, a driving disk 26 perpendicular to the axis of the bevel gear rod 25 and arranged on the top of the fixed bracket 8, a semi-meshing toothed belt 27 sleeved on the driving disk 26 and the outer ring of the sleeve rod 32, a downward pressure transmission gear 28 sleeved on the middle part of the sleeve rod 32, and multiple shafts are connected and meshed side by side on the fixed bracket 8. The direction-changing transmission gear 30 at the top of the fixed bracket 8 and the rising transmission gear 29 sleeved on the bottom of the sleeve rod 32, each of the direction-changing transmission gears 30 has a limit rod 31 at the top for limiting the transmission of the semi-meshing toothed belt 27. As shown in Figure 9, the bottom of the pressing transmission gear 28 contacts with a sliding fixing plate on the inner ring of the semi-meshing toothed belt 27, and the fixing plate is used to support and open the semi-meshing toothed belt 27 for the pressing transmission gear 28, and cannot rotate; wherein the pressing transmission gear 28 is composed of a gear meshing with the inner ring teeth of the semi-meshing toothed belt 27 and a buckle ring of the driving disc 26;

[0036] As can be seen from drawings 9-10, the inner ring of the semi-meshing toothed belt 27 is provided with a plurality of teeth, the width and distribution range of the teeth are both half of the semi-meshing toothed belt 27 and are located in the middle of its inner ring. The driving disk 26 is composed of two sleeves with equal diameters and a buckle ring arranged at a diameter smaller than the two sleeves, wherein the sleeve of the driving disk 26 and the semi-meshing toothed belt 27 are in contact, so that the two are permanently transmitted. When the screw rod 33 is trapped and needs to be reversed, since the teeth of the inner ring of the semi-meshing toothed belt 27 have passed through the downward pressure transmission gear 28, the semi-meshing toothed belt 27 is in an idling state at the downward pressure transmission gear 28, and then the semi-meshing toothed belt 27 is in an idling state at the downward pressure transmission gear 28. The overdrive sleeve rod 32 rises, raising the pressure transmission gear 28, so that the rising transmission gear 29 and the changing transmission gear 30 are in contact. In actual use, a synchronization ring can be sleeved on the top of the rising transmission gear 29 to match the changing transmission gear 30. Due to the gear matching effect, an even number of gears can reverse their rotation directions. Therefore, when the rising transmission gear 29 and the changing transmission gear 30 are in contact, the inner ring teeth of the semi-meshing toothed belt 27 are in contact with the gear set on the top of the fixed bracket 8, as shown in Figure 7. At this time, the screw rod 33 can be reversed, and the movable block 36 rises, so that the pressure platform 40 is separated from the plate.

[0037] The line changing assembly includes a pair of first support plates 17 arranged on one side of each fixed plate 13, a pair of first rotating disks 14 arranged on the first support plates 17 with the first gear 9 as the driving force and driven by a belt, a cam 15 arranged in the middle of the long rod between the pair of first rotating disks 14, a pair of connectors 18 movably arranged on the opposite sides of the two first support plates 17, a roller 16 arranged in the middle of the long rod between the pair of connectors 18, a return spring 20 arranged at the bottom of each connector 18, and a pair of second support plates 19 arranged on the fixed bracket 8 for supporting the weight of the bottom of the connector 18. When the outer ring of the cam 15 contacts the roller 16 at a point far from the axis, the connector 18 drops, and the roller 16 rises at this time, the push rod 34 lifts the sleeve rod 32, the teeth on the semi-meshing toothed belt 27 are separated from the downward pressure transmission gear 28, and the downward pressure platform 40 rises;

[0038] The first rotating disk 14 drives the cam 15 to rotate and drives the connecting head 18 to move on the fixing plate 13 .

[0039] A connecting rod is installed at the bottom of each connecting head 18, and a pressing plate 21 is installed at the bottom of the two connecting rods. At least two rollers 22 are installed on both sides of the pressing plate 21, and a pair of top rods 34 are installed on the top of the pressing plate 21 to contact the bottom of the sleeve rod 32. The two rollers 22 can press the edges of the plate when the pressing plate 21 is pressed down to prevent the plate from warping during transportation.

[0040] The intermittent drive device includes a pair of fixed plates 13 arranged on both sides of one end of the second conveyor line 5, a first gear 9 arranged on the top of one side of one of the fixed plates 13, a pair of intermittent push rollers 11 arranged on the top of the opposite surfaces of the two fixed plates 13, a second gear 10 arranged at the bottom of the fixed plate 13 and meshed with the first gear 9, and a pair of matching grinding discs 12 arranged at the bottom of the opposite surfaces of the two fixed plates 13, and the first gear 9 and the pair of intermittent push rollers 11 and the second gear 10 and the pair of matching grinding discs 12 are all rotatably connected together through a rotating rod, a motor is installed on any axis of the first gear 9 or the second gear 10, the motor drives the gear to rotate, and a plate is placed between the intermittent push roller 11 and the matching grinding disc 12, so that the plate is intermittently transmitted and the plate is smoothed as a whole;

[0041] The two sides of the plate pass between the intermittent push roller 11 and the matching grinding disc 12, and the raised outer ring of the intermittent push roller 11 fits the upper part of the plate.

[0042] The plane support plate 23 is installed with a variable line transport track 7 at one end, and damping rods 701 are installed on both sides of one end of the variable line transport track 7. In actual production, due to the different types of plates used in production, such as plate thickness and ductility, it is necessary to perform inspection after smoothing. At this time, the damping rod 701 can be installed to detect the flatness of the top of the plate. After the last section of the plate is smoothed, the first section of the smoothed plate section contacts the variable line transport track 7. If it cannot pass through the damping rod 701 at this time, it can be taken down manually and placed in an area. Finally, the size or edge shape of the cam 15 can be changed to increase or decrease the pressure of the pressing device and increase or decrease the pressing time of the pressing device to achieve the controllability of the smoothing performance. Finally, it is manually placed on the plane support plate 23 again, and then the intermittent push roller 11 and the matching grinding disc 12 will shift it to the bottom of the pressing device, and perform another operation. At this time, if it can pass through the damping rod 701, the plate is successfully smoothed, and then there will be no slipping on the conveyor belt or transmission roller.

[0043] This device adopts a synchronous effect. When the intermittent push roller 11 and the matching grinding disc 12 are pushing the plate, after the intermittent push roller 11 rotates a certain angle, the cam 15 gradually presses down the roller 16, causing the pressing plate 21 to descend, and the downward pressure transmission gear 28 loses the support of the push rod 34 and descends. The teeth on the semi-meshing toothed belt 27 just go through the top gear set of the fixed bracket, and then the teeth on the semi-meshing toothed belt 27 contact with the downward pressure transmission gear 28. Then, when the intermittent push roller 11 rotates a certain angle again, the edge closer to the axis and the outer ring of the cam 15 contacts the roller 16. At this time, the roller 16 rises, the push rod 34 lifts the sleeve rod 32, and the teeth on the semi-meshing toothed belt 27 separate from the downward pressure transmission gear 28. The rising transmission gear 29 contacts with the changing transmission gear 30, and the screw rod 33 reverses after the downward pressure platform 40 rises. Finally, when the intermittent push roller 11 contacts the next section of the plate, the device repeats itself.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilation pipe production device for a cold air machine, comprising a coil uncoiler (1), a slotting device (2), a first conveyor line (3), a shearing crane (4) and a second conveyor line (5), characterized in that: The second conveyor line (5) is provided with a smoothing mechanism (6) on the side opposite to the shearing crane (4), and intermittent driving devices are provided on both sides of the smoothing mechanism (6). A fixed bracket (8) is provided on the top of the smoothing mechanism (6), and a pressing device is provided at the center bottom of the fixed bracket (8). The intermittent driving device is connected to a line changing component for adjusting the lifting and lowering of the adjusting device via a belt. The pressing device comprises a sleeve rod (32) arranged at the bottom center of the fixed bracket (8), a screw rod (33) sleeved on the bottom of the sleeve rod (32), a fixed block (35) fixed to the bottom of the fixed bracket (8), a pair of side support rods (38) fixed on both sides of the fixed block (35), a driving block (39) slidably connected to each side support rod (38), a movable block (36) threadedly connected to the screw rod (33), a pair of transmission rods (37) penetrating the movable block (36) and having two ends passing through each driving block (39) respectively, and a pressing platform (40) rotatably connected to each side support rod (38) near one end of the plate; An adjustment device for changing the forward and reverse rotation of the screw rod (33) is provided in the middle of the fixed bracket (8), the adjustment device comprising a second rotating disc (24) coaxially connected to the first rotating disc (14), a bevel gear rod (25) driven by the second rotating disc (24) and mounted on the top of the fixed bracket (8), a driving disc (26) perpendicular to the axis of the bevel gear rod (25) and arranged on the top of the fixed bracket (8), a semi-meshing toothed belt (27) sleeved on the outer ring of the driving disc (26) and the sleeve rod (32), a downward pressing transmission gear (28) sleeved on the middle of the sleeve rod (32), a plurality of direction-changing transmission gears (30) connected by a plurality of shafts and meshed side by side on the top of the fixed bracket (8), and an upward transmission gear (29) sleeved on the bottom of the sleeve rod (32), each of the direction-changing transmission gears (30) being provided with a limit rod (31) at the top for limiting the transmission of the semi-meshing toothed belt (27); The line changing assembly comprises a pair of first support plates (17) arranged on one side of each fixed plate (13), a pair of first rotating disks (14) arranged on the first support plates (17) with a first gear (9) as a driving force and driven by a belt, a cam (15) arranged in the middle of a long rod between the pair of first rotating disks (14), a pair of connecting heads (18) movably arranged on opposite sides of two first support plates (17), a roller (16) arranged in the middle of the long rod between the pair of connecting heads (18), a return spring (20) arranged at the bottom of each connecting head (18), and a pair of second support plates (19) arranged on the fixed bracket (8) for supporting the weight of the bottom of the connecting head (18); The first rotating disk (14) drives the cam (15) to rotate, thereby driving the connecting head (18) to move on the fixed plate (13); The intermittent drive device comprises a pair of fixed plates (13) arranged at both sides of one end of the second conveyor line (5), a first gear (9) arranged at the top of one side of one of the fixed plates (13), a pair of intermittent push rollers (11) arranged at the top of the opposite surfaces of the two fixed plates (13), a second gear (10) arranged at the bottom of the fixed plates (13) and meshing with the first gear (9), and a pair of matching grinding discs (12) arranged at the bottom of the opposite surfaces of the two fixed plates (13), and the first gear (9) and the pair of intermittent push rollers (11) and the second gear (10) and the pair of matching grinding discs (12) are all rotatably connected together via a rotating rod; The two sides of the plate pass between the intermittent push roller (11) and the matching grinding disc (12), and the raised outer ring of the intermittent push roller (11) fits the upper part of the plate.

2. The ventilation pipe production equipment for air coolers according to claim 1, characterized in that: A connecting rod is installed at the bottom of each connecting head (18), a pressing plate (21) is installed at the bottom of the two connecting rods, at least two rollers (22) are installed on both sides of the pressing plate (21), and a pair of push rods (34) are installed on the top of the pressing plate (21) and contact the bottom of the sleeve rod (32).

3. The ventilation pipe production equipment for air coolers according to claim 1, characterized in that: A plurality of cylinders (201) are installed on the upper part of the slotting device (2), a pressing plate is installed on the bottom of the plurality of cylinders (201), and a plurality of crimping knives (202) are installed on the pressing plate.

4. The ventilation pipe production equipment for air coolers according to claim 3 is characterized in that: A flat support plate (23) is installed at the bottom between the two fixing plates (13), and a slot corresponding to the cutting knife of each crimping knife (202) is installed on the flat support plate (23), and the slot position is flush with the shearing crane (4).

5. The ventilation pipe production equipment for air coolers according to claim 1, characterized in that: The outer ring of the intermittent push roller (11) is made of anti-slip rubber.

6. The ventilation pipe production equipment for air coolers according to claim 1, characterized in that: The inner ring of the semi-meshing toothed belt (27) is provided with a plurality of teeth, the width and distribution range of the teeth are both half of the semi-meshing toothed belt (27) and are located in the middle of the inner ring thereof.

7. The ventilation pipe production equipment for air coolers according to claim 4, characterized in that: A line-changing transport track (7) is installed at one end of the planar support plate (23), and damping rods (701) are installed on both sides of one end of the line-changing transport track (7).

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