A feed conveyor for a sawing machine

Abstract

The application discloses a kind of feed conveying devices for sawing machine, belong to pipe cutting technical field, including fixed frame, the front and back of fixed frame inner wall are respectively equipped with driving conveying mechanism and passive conveying mechanism, one side of the inner wall of fixed frame is provided with clamping mechanism, and the front of fixed frame is provided with driving mechanism, and the driving mechanism drives driving conveying mechanism and clamping mechanism to operate alternately.By driving mechanism control driving conveying mechanism and clamping mechanism alternate operation, the fixed-length feed conveying and clamping of pipe are realized, and when driving conveying mechanism does not need to run, clamping mechanism is driven to run by conveying motor to clamp and fix pipe, reasonably utilize time difference without frequently starting and stopping conveying motor, significantly prolong the service life of motor.

Description

Technical Field

[0001] This invention relates to the field of pipe cutting technology, specifically to a feeding and conveying device for a sawing machine. Background Technology

[0002] A sawing machine is a device that uses a rapidly rotating saw blade to cut pipes online. First, the pipe material needs to be fed to the designated cutting position. Then, when the saw blade is cutting, the pipe material is clamped by a sawing clamp assembly. After the pipe is cut, the pipe material also needs to be clamped by a discharge clamp assembly for discharge and feeding.

[0003] For example, Chinese invention patent CN107350882A discloses a feeding and conveying device for a sawing machine, including a base, a pedestal hinged to the base, a slide mounted on the pedestal, the slide being driven by a slide drive device, at least two active conveying rollers rotatably mounted on the slide, the rotation center of the active conveying rollers being perpendicular to the sliding direction of the slide, the active conveying rollers being driven by a conveying drive device mounted on a support, the support being fixed to the slide, at least two vertically oriented passive conveying rollers fixed on the base, and several bottom conveying rollers horizontally mounted on the base, the bottom conveying rollers being arranged in parallel and located between the active and passive conveying rollers, the base also having a lifting device for changing the height of one side of the base, the lifting device being connected to the bottom of the base, the lifting device and the passive conveying rollers being located on the same side of the base, this conveying device realizes continuous feeding of pipes and has high working efficiency.

[0004] The aforementioned patent uses a combination of active and passive conveying rollers to transport the pipe from upstream to downstream. The sawing machine uses a feeding conveying device to achieve continuous feeding of the pipe. However, in actual application, during the sawing process, the stability of the pipe needs to be ensured. During this process, the pipe does not need to be conveyed, so the conveying motor needs to be turned off. After the sawing is completed, the conveying motor is restarted to transport the pipe. This process is repeated, and the conveying motor needs to be frequently started and stopped, which can easily damage the conveying motor and significantly affect its service life.

[0005] Therefore, it is necessary to provide a feeding and conveying device for a sawing machine to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a feeding and conveying device for a sawing machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: a feeding and conveying device for a sawing machine, comprising a fixed frame, wherein an active conveying mechanism and a passive conveying mechanism are respectively installed on the front and back of the inner wall of the fixed frame, a clamping mechanism is provided on one side of the inner wall of the fixed frame, and a driving mechanism is provided on the front of the fixed frame, wherein the driving mechanism drives the active conveying mechanism and the clamping mechanism to operate alternately.

[0008] When the drive mechanism is running, it first drives the active conveying mechanism to run, and the active conveying mechanism works in conjunction with the passive conveying mechanism to feed the pipe to a fixed length. After the feeding is completed, the drive mechanism then drives the clamping mechanism to run to clamp and fix the pipe.

[0009] By controlling the alternating operation of the active conveying mechanism and the clamping mechanism through the drive mechanism, the pipe can be fed and clamped at a fixed length. When the active conveying mechanism is not in operation, the clamping mechanism is driven by the conveying motor to clamp and fix the pipe. By making reasonable use of the time difference, the conveying motor does not need to be started and stopped frequently, which significantly extends the service life of the motor.

[0010] As a further description of the above technical solution: the active conveying mechanism includes two support frames fixedly installed on the back of the inner wall of the fixed frame. The top of each of the two support frames is rotatably connected to an active conveying roller via a rotating shaft. The outer surfaces of the two rotating shafts are fixedly connected to internal toothed pulleys, and an internal toothed belt is driven between the outer surfaces of the two internal toothed pulleys.

[0011] As a further description of the above technical solution: the passive conveying mechanism includes a bidirectional lead screw rotatably mounted on a fixed frame. Two adjusting blocks are threadedly connected to the outer surface of the bidirectional lead screw. The back sides of the two adjusting blocks are slidably connected to the front side of the inner wall of the fixed frame, and connecting rods are hinged to the front sides of the two adjusting blocks. The other ends of the two connecting rods are hinged to the same movable frame. Two passive conveying rollers are rotatably connected to the top of the movable frame. A guide block is also fixedly connected to the top of the movable frame. A guide rod is movably inserted inside the guide block. One end of the guide rod is fixedly connected to the inner wall of the fixed frame. An adjusting handwheel is fixedly connected to one end of the bidirectional lead screw.

[0012] As a further description of the above technical solution: the clamping mechanism includes a U-shaped frame fixedly installed on one side of the inner wall of the fixed frame. The top and bottom of the inner wall of the U-shaped frame are slidably connected with racks. One gear is rotatably connected to one side of the inner wall of the U-shaped frame. The outer surface of the gear meshes with two racks. The two racks are fixedly connected to a vertical frame at their opposite ends. An adjustment component is provided on the vertical frame, and a clamping plate is provided on the adjustment component.

[0013] As a further description of the above technical solution: the adjustment assembly includes an adjustment handwheel two rotatably mounted on one side of the vertical frame. The adjustment handwheel two has a threaded rod internally connected to it. One end of the threaded rod movably passes through the vertical frame and is fixedly connected to an adjustment plate. A guide rod two is fixedly connected to the side of the adjustment plate near the vertical frame, and the guide rod two movably passes through the vertical frame. The clamping plate is fixedly mounted on one side of the adjustment plate.

[0014] As a further description of the above technical solution: the driving mechanism includes an L-shaped frame fixedly installed on the front of the fixed frame. A conveying motor is fixedly connected to the top of the L-shaped frame. A rotating disk is fixedly connected to the output end of the conveying motor. Several teeth are movably inserted inside the rotating disk. Guide columns are fixedly connected to the bottom of the teeth. A hollow frame is rotatably connected to the middle position of the bottom of the rotating disk. An adjusting frame is fixedly connected to the top of the hollow frame. Locking bolts are movably inserted on the hollow frame. Bolt holes are opened at the bottom of the rotating disk corresponding to the position of each tooth. A driving gear is intermittently meshed with the teeth on the outer surface of the rotating disk. The driving gear is fixedly connected to the bottom end of one of the rotating shafts. The adjusting frame is used to adjust the number of teeth in use. The locking bolts and bolt holes are used to lock the adjusting frame, so that the adjusting frame is fixedly connected to the rotating disk.

[0015] As a further description of the above technical solution: the adjustment frame is composed of an arc-shaped maintaining ejection frame, an arc-shaped maintaining retraction frame, an ejection guide frame, and a retraction guide frame. The arc-shaped maintaining ejection frame keeps the teeth in the state of being ejected out of the rotating disk, the arc-shaped maintaining retraction frame is used to keep the teeth in the state of being retracted into the rotating disk, and the retraction guide frame is used to guide the teeth in the ejected state to retract to the retracted state.

[0016] As a further description of the above technical solution: the top of the rotating disk is also provided with a drive guide groove, and a drive rod is movably inserted inside the drive guide groove. The end of the drive rod away from the rotating disk is fixedly connected to one of the vertical frames.

[0017] As a further description of the above technical solution: the drive guide groove is composed of an arc-shaped maintaining groove one, an inclined guide groove one, an arc-shaped maintaining groove two, and an inclined guide groove two connected in sequence.

[0018] As a further description of the above technical solution: the first arc-shaped maintaining groove and the second arc-shaped maintaining groove are located at the same arc center, and the radius of the first arc-shaped maintaining groove is smaller than the radius of the second arc-shaped maintaining groove.

[0019] The present invention has the following beneficial effects:

[0020] Avoid frequent motor start-stop: By controlling the alternating operation of the active conveying mechanism and the clamping mechanism through the drive mechanism, the pipe can be fed and clamped at a fixed length. When the active conveying mechanism is not in operation, the conveying motor drives the clamping mechanism to clamp and fix the pipe. By making reasonable use of the time difference, the conveying motor does not need to be started and stopped frequently, which significantly extends the service life of the motor.

[0021] Precise length feeding: By adjusting the number of teeth in use, the length of each feed can be precisely controlled to meet different sawing requirements, thereby improving processing accuracy and efficiency.

[0022] Stable clamping: The clamping mechanism adopts a gear and rack drive and an adjustable clamping plate design, which can adapt to pipes of different diameters, ensuring the stability of the pipes during the sawing process and improving the cutting quality.

[0023] Compact structure: The device has a reasonable overall design, with each mechanism working together, occupying little space and suitable for various pipe cutting scenarios. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a feeding and conveying device for a sawing machine proposed in this invention. Figure 1 ;

[0025] Figure 2 This is a three-dimensional schematic diagram of the overall structure of a feeding and conveying device for a sawing machine proposed in this invention. Figure 2 ;

[0026] Figure 3 This is a three-dimensional schematic diagram of the overall structure of a feeding and conveying device for a sawing machine proposed in this invention. Figure 3 ;

[0027] Figure 4 This is a front view of the overall structure of a feeding and conveying device for a sawing machine proposed in this invention;

[0028] Figure 5 This is a side view of the overall structure of a feeding and conveying device for a sawing machine proposed in this invention;

[0029] Figure 6 This is a top view of the overall structure of a feeding and conveying device for a sawing machine proposed in this invention;

[0030] Figure 7 This is a three-dimensional schematic diagram of the fixed frame and passive conveying mechanism of the feeding conveying device for a sawing machine proposed in this invention;

[0031] Figure 8 This is a three-dimensional schematic diagram of the fixing frame and clamping mechanism of the feeding conveying device for a sawing machine proposed in this invention;

[0032] Figure 9 This is a three-dimensional schematic diagram of the clamping mechanism and drive rod of a feeding conveying device for a sawing machine proposed in this invention.

[0033] Figure 10 This is a three-dimensional schematic diagram of the active conveying mechanism and rotary table of a feeding conveying device for a sawing machine proposed in this invention;

[0034] Figure 11 for Figure 10 Enlarged view of point A in the middle;

[0035] Figure 12 for Figure 10 Enlarged view of section B in the middle.

[0036] In the diagram: 1. Fixture;

[0037] 2. Active conveying mechanism; 201. Support frame; 202. Rotating shaft; 203. Active conveying roller; 204. Internal toothed pulley; 205. Internal toothed belt;

[0038] 3. Passive conveying mechanism; 301. Bidirectional lead screw; 302. Adjusting block; 303. Connecting rod; 304. Moving frame; 305. Passive conveying roller; 306. Guide block; 307. Guide rod one; 308. Adjusting handwheel one;

[0039] 4. Clamping mechanism; 401. U-shaped frame; 402. Rack; 403. Gear 1; 404. Vertical frame; 405. Adjustment assembly; 4051. Adjustment handwheel 2; 4052. Threaded rod; 4053. Adjustment plate; 4054. Guide rod 2; 406. Clamping plate;

[0040] 5. Drive mechanism; 501. L-shaped frame; 502. Conveyor motor; 503. Rotary disk; 504. Gear; 505. Guide column; 506. Hollow frame; 507. Adjusting frame; 5071. Arc-shaped support ejection frame; 5072. Arc-shaped support retraction frame; 5073. Ejection guide frame; 5074. Retraction guide frame; 508. Locking bolt; 509. Bolt hole; 5010. Drive gear; 5011. Drive guide groove; 50111. Arc-shaped support groove one; 50112. Inclined guide groove one; 50113. Arc-shaped support groove two; 50114. Inclined guide groove two; 5012. Drive rod;

[0041] 6. Bottom support roller; 7. Movable block. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] As attached Figure 1 To be continued Figure 12 As shown:

[0044] Example 1: The present invention provides a feeding and conveying device for a sawing machine, including a fixed frame 1. Multiple bottom support rollers 6 are rotatably connected between the front and back sides of the inner wall of the fixed frame 1. An active conveying mechanism 2 and a passive conveying mechanism 3 are respectively installed on the front and back sides of the inner wall of the fixed frame 1. A clamping mechanism 4 is provided on one side of the inner wall of the fixed frame 1, and a driving mechanism 5 is provided on the front side of the fixed frame 1. The driving mechanism 5 drives the active conveying mechanism 2 and the clamping mechanism 4 to operate alternately.

[0045] When the drive mechanism 5 is running, it first causes the active conveying mechanism 2 to run, and the active conveying mechanism 2 and the passive conveying mechanism 3 work together to feed the pipe to a fixed length. After the feeding is completed, the drive mechanism 5 then drives the clamping mechanism 4 to run to clamp and fix the pipe.

[0046] The active conveying mechanism 2 includes two support frames 201 fixedly installed on the back of the inner wall of the fixed frame 1. The top of each support frame 201 is rotatably connected to an active conveying roller 203 via a rotating shaft 202. The outer surfaces of the two rotating shafts 202 are fixedly connected to internal toothed pulleys 204. An internal toothed belt 205 is connected between the outer surfaces of the two internal toothed pulleys 204. The drive mechanism 5 drives one of the rotating shafts 202 to rotate. Then, by using the cooperation of the internal toothed pulleys 204 and the internal toothed belt 205, the kinetic energy is transmitted to the other rotating shaft 202, so that the two rotating shafts 202 rotate synchronously and drive the two active conveying rollers 203 to rotate synchronously. Thus, the friction between the active conveying rollers 203 and the pipe drives the pipe to move, thereby realizing the feeding and conveying of the pipe.

[0047] The passive conveying mechanism 3 includes a bidirectional lead screw 301 rotatably mounted on a fixed frame 1. Two adjusting blocks 302 are threadedly connected to the outer surface of the bidirectional lead screw 301. The back sides of the two adjusting blocks 302 are slidably connected to the front side of the inner wall of the fixed frame 1, and the front sides of the two adjusting blocks 302 are hinged to connecting rods 303. The other ends of the two connecting rods 303 are hinged to the same movable frame 304. Two passive conveying rollers 305 are rotatably connected to the top of the movable frame 304. A guide block 306 is also fixedly connected to the top of the movable frame 304. A guide rod 307 is movably inserted inside the guide block 306. One end of the guide rod 307 is fixedly connected to the inner wall of the fixed frame 1. An adjusting handwheel 308 is fixedly connected to one end of the bidirectional lead screw 301. Through the cooperation of the guide rod 307 and the guide block 306, the movable frame 304 can be limited, improving the stability of the movable frame 304 during the forward and backward movement, thereby improving the stability of the passive conveying rollers 305 during the position adjustment process.

[0048] The worker places the pipe to be processed between the active conveying roller 203 and the passive conveying roller 305, above the bottom support roller 6. Then, the worker turns the adjusting handwheel 308 to rotate the bidirectional screw 301. The adjusting block 302 is slidably connected to the fixed frame 1, and the fixed frame 1 limits the adjusting block 302, causing the two adjusting blocks 302 to move to opposite sides. This, in turn, pushes the moving frame 304 to move closer to the active conveying roller 203 via the connecting rod 303, and drives the passive conveying roller 305 to move. This ensures that the outer surfaces of both the passive conveying roller 305 and the active conveying roller 203 are in contact with the surface of the pipe to be conveyed. By adjusting the distance between the passive conveying roller 305 and the active conveying roller 203, the worker can limit the conveying of pipes of different sizes.

[0049] The clamping mechanism 4 includes a U-shaped frame 401 fixedly installed on one side of the inner wall of the fixed frame 1. The top and bottom of the inner wall of the U-shaped frame 401 are slidably connected to racks 402. A gear 403 is rotatably connected to one side of the inner wall of the U-shaped frame 401. The outer surface of the gear 403 meshes with the two racks 402. A vertical frame 404 is fixedly connected to the two ends of the racks 402. An adjustment component 405 is provided on the vertical frame 404. A clamping plate 406 is provided on the adjustment component 405. The clamping plate 406 is made of rubber material. The clamping mechanism 4 can clamp and fix the pipe after the pipe is conveyed to a fixed length, thereby improving the stability of the pipe. In cooperation with the clamps on the sawing machine, multiple clamping and fixing of the pipe can be achieved, thereby ensuring the stability of the pipe during the sawing process.

[0050] The drive mechanism 5 includes an L-shaped frame 501 fixedly mounted on the front of the fixed frame 1. A conveyor motor 502 is fixedly connected to the top of the L-shaped frame 501. A rotating disk 503 is fixedly connected to the output end of the conveyor motor 502. Several teeth 504 are movably inserted inside the rotating disk 503. Guide posts 505 are fixedly connected to the bottom of the teeth 504. A hollow frame 506 is rotatably connected to the middle position of the bottom of the rotating disk 503. An adjusting frame 507 is fixedly connected to the top of the hollow frame 506. A movable bracket is inserted on the hollow frame 506. There are locking bolts 508, and bolt holes 509 are provided at the bottom of the rotating disk 503 corresponding to the position of each tooth 504. The outer surface of the rotating disk 503 is intermittently meshed with the teeth 504. The drive gear 5010 is fixedly connected to the bottom end of one of the rotating shafts 202. The adjusting bracket 507 is used to adjust the number of teeth 504 in use. The locking bolts 508 and bolt holes 509 are used to lock the adjusting bracket 507, so that the adjusting bracket 507 is fixedly connected to the rotating disk 503.

[0051] The adjusting frame 507 consists of an arc-shaped ejector frame 5071, an arc-shaped retraction frame 5072, an ejector guide frame 5073, and a retraction guide frame 5074. The arc-shaped ejector frame 5071 keeps the tooth 504 in the ejected state outside the rotating disk 503. The arc-shaped retraction frame 5072 is used to keep the tooth 504 in the retracted state inside the rotating disk 503. The retraction guide frame 5074 is used to guide the tooth 504 in the ejected state to retract to the retracted state.

[0052] The top of the rotating disk 503 is also provided with a drive guide groove 5011. A drive rod 5012 is movably inserted into the drive guide groove 5011. The end of the drive rod 5012 away from the rotating disk 503 is fixedly connected to one of the vertical frames 404. A movable block 7 is movably fitted on the outer surface of the drive rod 5012. The movable block 7 is fixedly connected to the inner wall of the fixed frame 1, so that the drive rod 5012 is movably installed on the inner wall of the fixed frame 1 through the movable block 7. The movable block 7 can support the drive rod 5012 and improve the stability of the drive rod 5012.

[0053] The drive guide groove 5011 is composed of an arc-shaped support groove 50111, an inclined guide groove 50112, an arc-shaped support groove 50113, and an inclined guide groove 50114 that are connected in sequence.

[0054] Arc-shaped support groove 1 50111 and arc-shaped support groove 2 50113 are located at the same arc center, and the radius of arc-shaped support groove 1 50111 is smaller than the radius of arc-shaped support groove 2 50113.

[0055] Working principle: When the pipe needs to be sawn, the number of teeth 504 activated is first adjusted according to the length of the pipe to be sawn. Then, the angle of rotation of the tooth 504 on the rotating disk 503 driving the drive gear 5010 is adjusted when the rotating disk 503 rotates once. This controls the angle of rotation of the active conveying roller 203 when the rotating disk 503 rotates once, thereby controlling the length of the pipe to be sawn each time the active conveying roller 203 drives the rotating disk 503 to rotate once, so as to achieve fixed-length feeding and conveying of the pipe in the future.

[0056] When adjusting the number of teeth 504 in use, the operator first uses an auxiliary tool to loosen the locking bolt 508, causing it to exit the bolt hole 509 and releasing the limiting fixation on the cutout frame 506. This allows the cutout frame 506 and the adjusting frame 507 to rotate relative to the rotating disk 503. Then, keeping the rotating disk 503 stationary, rotating the cutout frame 506 clockwise or counterclockwise causes the adjusting frame 507 to rotate relative to the rotating disk 503. When the adjusting frame 507 rotates, the ejection guide frame 5073 and the retraction guide frame 5074 on the adjusting frame 507 abut against the guide post 505 at the bottom of the teeth 504. Through the guiding action of the guide frame on the guide post 505, the guide post 505 is moved closer to or further away from the rotating disk. The center of 503 moves to one side, causing the teeth 504 to retract into the interior of the rotating disk 503 or be ejected to the exterior of the rotating disk 503, thereby adjusting the number of teeth 504 in use. After adjustment, the hollow frame 506 and the rotating disk 503 are locked and fixed again by the cooperation of the locking bolt 508 and the bolt hole 509. The arc-shaped ejection frame 5071 can limit the teeth 504 in the ejection state, keeping them in the ejection state, while the arc-shaped retraction frame 5072 can limit the teeth 504 in the retraction state, keeping them in the retraction state, thus preventing the teeth 504 from shaking during the subsequent rotation of the rotating disk 503 and affecting the normal transmission.

[0057] After the number of teeth 504 is adjusted, the worker places the pipe to be processed between the active conveying roller 203 and the passive conveying roller 305 and above the bottom support roller 6. Then, the worker turns the adjusting handwheel 308 to drive the bidirectional screw 301 to rotate. The adjusting block 302 is slidably connected to the fixed frame 1. The fixed frame 1 limits the adjusting block 302, causing the two adjusting blocks 302 to move to the opposite side. Then, the connecting rod 303 pushes the moving frame 304 to move closer to the active conveying roller 203 and drives the passive conveying roller 305 to move, so that the outer surfaces of the passive conveying roller 305 and the active conveying roller 203 are in contact with the surface of the pipe to be conveyed.

[0058] Next, the distance between the two clamping plates 406 is adjusted according to the diameter of the pipe to be conveyed. The position of the clamping plates 406 is adjusted by the adjusting component 405 so that the distance between the clamping plates 406 and the pipe is slightly smaller than the radius difference between the first arc-shaped retaining groove 50111 and the second arc-shaped retaining groove 50113, so that when the subsequent drive mechanism 5 drives the clamping mechanism 4 to clamp and fix the pipe, the pipe can be rigidly clamped.

[0059] After the preparation is completed, the conveyor motor 502 is started. The output end of the conveyor motor 502 rotates, driving the rotating disk 503 to rotate. The rotating disk 503 drives multiple teeth 504 to rotate synchronously. When the teeth 504 in the ejection state rotate to the position opposite to the drive gear 5010, the rotating disk 503 meshes with the drive gear 5010 through the teeth 504, transmitting kinetic energy to the drive gear 5010, driving the drive gear 5010 to rotate, and driving the rotating shaft 202 fixedly connected to the drive gear 5010 to rotate. Through the cooperation of the internal toothed pulley 204 and the internal toothed belt 205, the kinetic energy is transmitted to another rotating shaft 202, so that the two rotating shafts 202 rotate synchronously, thereby driving the two active conveying rollers 203 to rotate synchronously. The friction between the active conveying rollers 203 and the pipe is used to drive the pipe to move forward for feeding and conveying.

[0060] During one revolution of the rotary disk 503, kinetic energy is first transmitted to the active conveying mechanism 2 via the gear 504 to feed the pipe a specific length. Then, the gear 504 disengages from the drive gear 5010 (i.e., disengages), and the drive rod 5012 is guided by the inclined guide groove 50112 to enter the arc-shaped retaining groove 50113. This pushes the drive rod 5012 to move a certain distance (i.e., the radius difference between the arc-shaped retaining groove 50111 and the arc-shaped retaining groove 50113). The movement of the drive rod 5012 pushes the vertical frame 404 fixedly connected to it to move. Through the cooperation of the two racks 402 and the gear 403, the two vertical frames 404 move to opposite sides, thereby driving the two clamping plates 406. The moving part clamps and fixes the pipe, and then the drive rod 5012 moves inside the arc-shaped retaining groove 50113, so that the clamping mechanism 4 always maintains the clamping and fixing of the pipe. During the time that the drive rod 5012 moves inside the arc-shaped retaining groove 50113, the sawing machine cuts the pipe fed by the fixed length. According to the time required for the sawing machine to cut the pipe, the speed of the conveying motor 502 can be adjusted or the circumference of the arc-shaped retaining groove 50113 can be increased to ensure that the drive rod 5012 is always inside the arc-shaped retaining groove 50113 within the time range required for the sawing machine to cut the pipe and the subsequent retraction. At the same time, the teeth 504 and the drive gear 5010 are in a disengaged non-meshing state to avoid operational interference.

[0061] Example 2: This example is basically the same as the previous example, except that the adjustment assembly 405 includes an adjustment handwheel 4051 rotatably mounted on one side of the vertical frame 404. The adjustment handwheel 4051 is internally threaded with a threaded rod 4052. One end of the threaded rod 4052 movably passes through the vertical frame 404 and is fixedly connected to an adjustment plate 4053. A guide rod 4054 is fixedly connected to the side of the adjustment plate 4053 near the vertical frame 404, and the guide rod 4054 movably passes through the vertical frame 404. A clamping plate 406 is fixedly mounted on one side of the adjustment plate 4053.

[0062] By turning the second adjusting handwheel 4051, and under the limiting action of the second guiding rod 4054 on the adjusting plate 4053 and the threaded rod 4052, the threaded rod 4052 moves along the axial direction of the second adjusting handwheel 4051, thereby driving the adjusting plate 4053 to move, so as to adjust the distance between the clamping plate 406 and the pipe to be processed. Through the adjustable position design of the clamping plate 406, pipes of different sizes can be clamped and fixed. By adjusting the distance between the clamping plate 406 and the pipe to be slightly smaller than the radius difference between the first arc-shaped retaining groove 50111 and the second arc-shaped retaining groove 50113, the clamping plate 406 can rigidly clamp the pipe when the subsequent drive mechanism 5 drives the clamping mechanism 4 to clamp and fix the pipe, so as to ensure the stability of the clamping and fixing.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding and conveying device for a sawing machine, comprising a fixed frame (1), characterized in that: An active conveying mechanism (2) and a passive conveying mechanism (3) are respectively installed on the front and back of the inner wall of the fixed frame (1). A clamping mechanism (4) is provided on one side of the inner wall of the fixed frame (1), and a driving mechanism (5) is provided on the front of the fixed frame (1). The driving mechanism (5) drives the active conveying mechanism (2) and the clamping mechanism (4) to operate alternately. When the drive mechanism (5) is running, it first causes the active conveying mechanism (2) to run, and the active conveying mechanism (2) and the passive conveying mechanism (3) work together to feed the pipe to a fixed length. After the feeding is completed, the drive mechanism (5) then drives the clamping mechanism (4) to run to clamp and fix the pipe. The clamping mechanism (4) includes a U-shaped frame (401) fixedly installed on one side of the inner wall of the fixed frame (1). The top and bottom of the inner wall of the U-shaped frame (401) are slidably connected with racks (402). One side of the inner wall of the U-shaped frame (401) is rotatably connected with a gear (403). The outer surface of the gear (403) meshes with the two racks (402). The two racks (402) are fixedly connected to a vertical frame (404) at their opposite ends. An adjustment component (405) is provided on the vertical frame (404). A clamping plate (406) is provided on the adjustment component (405). The drive mechanism (5) includes an L-shaped frame (501) fixedly installed on the front of the fixed frame (1). A conveyor motor (502) is fixedly connected to the top of the L-shaped frame (501). A rotating disk (503) is fixedly connected to the output end of the conveyor motor (502). Several teeth (504) are movably inserted inside the rotating disk (503). A guide post (505) is fixedly connected to the bottom of the teeth (504). A hollow frame (506) is rotatably connected to the middle position of the bottom of the rotating disk (503). An adjustment frame (507) is fixedly connected to the top of the hollow frame (506). A locking bolt (508) is movably inserted on the hollow frame (506). Bolt holes (509) are opened at the bottom of the rotating disk (503) and at the position corresponding to each tooth (504). A drive gear (5010) is intermittently meshed with the teeth (504) on the outer surface of the rotating disk (503). The adjusting frame (507) consists of an arc-shaped support ejection frame (5071), an arc-shaped support retraction frame (5072), an ejection guide frame (5073), and a retraction guide frame (5074); The top of the rotating disk (503) is also provided with a drive guide groove (5011), and a drive rod (5012) is movably inserted inside the drive guide groove (5011). The end of the drive rod (5012) away from the rotating disk (503) is fixedly connected to one of the vertical frames (404).

2. The feeding and conveying device for a sawing machine according to claim 1, characterized in that: The active conveying mechanism (2) includes two support frames (201) fixedly installed on the back of the inner wall of the fixed frame (1). The top of each of the two support frames (201) is rotatably connected to an active conveying roller (203) via a rotating shaft (202). The outer surfaces of the two rotating shafts (202) are fixedly connected to internal toothed pulleys (204), and an internal toothed belt (205) is connected between the outer surfaces of the two internal toothed pulleys (204).

3. The feeding and conveying device for a sawing machine according to claim 1, characterized in that: The passive conveying mechanism (3) includes a bidirectional lead screw (301) rotatably mounted on a fixed frame (1). The outer surface of the bidirectional lead screw (301) is threaded with two adjusting blocks (302). The back of the two adjusting blocks (302) is slidably connected to the front of the inner wall of the fixed frame (1). The front of the two adjusting blocks (302) is hinged with connecting rods (303). The other end of the two connecting rods (303) is hinged to the same movable frame (304). The top of the movable frame (304) is rotatably connected with two passive conveying rollers (305). The top of the movable frame (304) is also fixedly connected with a guide block (306). A guide rod (307) is movably inserted inside the guide block (306). One end of the guide rod (307) is fixedly connected to the inner wall of the fixed frame (1). One end of the bidirectional lead screw (301) is fixedly connected with an adjusting handwheel (308).

4. The feeding and conveying device for a sawing machine according to claim 1, characterized in that: The adjustment assembly (405) includes an adjustment handwheel (4051) rotatably mounted on one side of the vertical frame (404). The adjustment handwheel (4051) is internally threaded with a threaded rod (4052). One end of the threaded rod (4052) movably passes through the vertical frame (404) and is fixedly connected to an adjustment plate (4053). The side of the adjustment plate (4053) near the vertical frame (404) is fixedly connected to a guide rod (4054), and the guide rod (4054) movably passes through the vertical frame (404). The clamping plate (406) is fixedly mounted on one side of the adjustment plate (4053).

5. The feeding and conveying device for a sawing machine according to claim 1, characterized in that: The drive guide groove (5011) is composed of an arc-shaped support groove one (50111), an inclined guide groove one (50112), an arc-shaped support groove two (50113), and an inclined guide groove two (50114) connected in sequence. The arc-shaped support groove one (50111) corresponds to the position of the tooth (504).

6. The feeding and conveying device for a sawing machine according to claim 5, characterized in that: The first arc-shaped maintaining groove (50111) and the second arc-shaped maintaining groove (50113) are located at the same arc center, and the radius of the first arc-shaped maintaining groove (50111) is smaller than the radius of the second arc-shaped maintaining groove (50113).

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