A U-shaped tube processing system for dryer heat exchangers

Abstract

The present invention discloses a U-shaped tube processing system for a heat exchanger of a clothes dryer, comprising a bending component, a lifting mechanism, a fixing component, a grinding component, a feeding component, a cutting component, a discharging component, a positioning component and a receiving component; the feeding component is used for intermittent feeding of tube materials, the feeding component comprises a wedge portion, a rubber strip, a feeding seat and a feeding wheel, the feeding seat drives the wedge portion to move up and down by reciprocating movement, the wedge portion is connected to the rubber strip, the rubber strip and the feeding wheel feed or reset relative to each other by clamping or releasing the tube material; the positioning component is arranged on one side of the feeding component, the positioning component is used for positioning the fed tube material, the positioning component comprises a ratchet mechanism and several groups of rubber wheels, the rubber wheels are driven by the ratchet mechanism to realize unidirectional rotation; the present invention conveniently and efficiently realizes the automatic one-piece forming function of the U-shaped tube.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, in particular to a U-shaped tube processing system for a clothes dryer heat exchanger. Background Art

[0002] A clothes dryer is a household appliance that uses electric heating to instantly evaporate the moisture from washed clothes. Heat exchangers are essential in a clothes dryer. During the heat exchanger manufacturing process, straight tubes or large U-shaped tubes need to be welded to short U-shaped tubes, while U-shaped tubes need to be bent and formed using appropriate equipment.

[0003] The existing patent application number 201911025379.0 discloses "U-shaped tube processing equipment", which includes a first conveying device, a cutting device, a tube end processing device, a bending device, a second conveying device and a material return device. The first conveying device is used to convey the tube material, and the cutting device is arranged downstream of the first conveying device. The cutting device is used to cut the tube material to form a tube fitting of a predetermined length. The tube end processing device is arranged downstream of the cutting device along the conveying direction; the tube end processing device has a tube end processing part for expanding and / or deburring the tube mouth of the tube fitting, and the bending device is used to bend the tube fitting to form a U-shaped tube. The second conveying device is arranged below the bending device. The second conveying device is used to convey the U-shaped tube, and the material return device is used to push the U-shaped tube from the bending device to the second conveying device.

[0004] The above technical solution realizes the automatic processing and forming of the U-shaped tube, but there are still many shortcomings. For example, the tube material needs to be clamped by the clamping part first, then moved forward to the corresponding position, and then the tube material is released. The clamping part returns to its original position and repeats the above steps to realize the feeding of the tube material. However, this technical solution has cumbersome steps and requires actions such as clamping and loosening, which reduces the feeding efficiency. In addition, setting up several clamping parts only realizes the feeding of the tube material, which increases unnecessary equipment costs.

[0005] Therefore, it is necessary to provide a U-shaped tube processing system for a clothes dryer heat exchanger, which can achieve the function of automatic integrated molding of the U-shaped tube. Summary of the Invention

[0006] The object of the present invention is to provide a U-shaped tube processing system for a clothes dryer heat exchanger to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: A U-shaped tube processing system for a clothes dryer heat exchanger, comprising a bending assembly, a lifting mechanism, a fixing assembly, a grinding assembly, a feeding assembly, a cutting assembly, a discharging assembly, a positioning assembly and a receiving assembly; wherein,

[0008] The feeding assembly is used for intermittent feeding of pipe materials. The feeding assembly includes a wedge block, a rubber strip, a feeding seat and a feeding wheel. The feeding seat drives the wedge block to move up and down by reciprocating movement. The wedge block is connected to the rubber strip. The rubber strip and the feeding wheel feed or reset the pipe material relative to each other by clamping or releasing the pipe material.

[0009] The positioning assembly is arranged on one side of the feeding assembly, and is used to position the fed pipe material. The positioning assembly includes a ratchet mechanism and a plurality of rubber wheels. The rubber wheels are driven by the ratchet mechanism to realize unidirectional rotation.

[0010] The fixing assembly is arranged on the inner side of the bending assembly, and is used to receive the fed pipe material and fix its head end on the bending assembly;

[0011] The cutting assembly is used to cut the fixed pipe into pipes of corresponding lengths and form two cut surfaces accordingly;

[0012] The pipe is driven to move by the lifting mechanism so that the two cut surfaces are staggered with each other;

[0013] The grinding assembly includes a grinding part 1, a grinding part 2, a pair of rack parts and a gear. The grinding part 1 and the grinding part 2 are arranged opposite to each other. The two rack parts are relatively meshed on both sides of the gear. The two rack parts respectively drive the grinding part 1 and the grinding part 2 to move in opposite directions and grind the two cut surfaces at the same time.

[0014] The bending assembly is arranged after the grinding assembly process, and the bending assembly includes a bending portion, and the fixing assembly is arranged on one side of the bending portion, and the bending portion drives the fixing assembly and one end of the pipe to rotate and bend it;

[0015] The unloading assembly is used to push the bent U-shaped tube body into the receiving assembly.

[0016] In one embodiment, the upper side of the feed seat is provided with several groups of tube grooves, and the feed wheels are provided with several groups. The feed wheels are correspondingly arranged on the upper side of the tube grooves, and the gap between the tube grooves and the feed wheels is matched with the tube material. The lower end of the tube groove is provided with a square groove, and the rubber strip slides with the square groove. The wedge block portion includes a wedge block 1 and a wedge block 2. The inclined surfaces of the two wedge blocks are arranged opposite to each other. The lower end of the rubber strip is fixedly connected to the wedge block 2. The lower end of the rubber strip is provided with a telescopic rod, and the lower end of the telescopic rod is provided with a baffle. The baffle is fixed Fixed inside the square groove, a guide sleeve is provided inside the feed seat, the guide sleeve passes through the feed seat and slides with it, the wedge block is fixed on the upper end of the guide sleeve, and the inner side of the guide sleeve slides with a guide column, the friction force between the guide column and the guide sleeve is greater than the friction force between the guide sleeve and the feed seat, one end of the guide column is fixedly connected to a support plate, the upper end of the support plate is fixedly connected to a cylinder, the cylinder is used to drive the feed seat to move, the other end of the guide column is fixedly connected to the material guide seat, and the upper side of the material guide seat is also provided with a pipe groove.

[0017] In one embodiment, a groove is provided at one end of the feed seat, a clamping plate is fixedly connected to the outer side of the guide sleeve, the clamping plate slides in the groove, and one end of the baffle is in contact with a wedge block.

[0018] In one embodiment, the ratchet mechanism includes a ratchet, a rotating rod is fixedly connected to the inner side of the rubber wheel, both ends of the rotating rod are rotatably connected to support blocks, the support blocks are fixed on both sides of the material guide seat, the rotating rod extends to the outside of the support block and is connected to the ratchet, a pawl is provided on the lower side of the ratchet, the pawl is rotatably connected to one side of the material guide seat and is provided with a torsion spring, and the tube material is in close contact with the rubber wheel and the material guide seat.

[0019] In one embodiment, the surface of the bending portion is provided with several groups of bending tube grooves, the bending portion is configured as a U-shaped block, a bending seat is provided on the lower side of the bending portion, and several tube grooves are also provided on the upper side of the bending seat. The bending portion and the bending seat are in contact with each other, and a fixed plate is rotatably connected at the center of the bending portion. The lower side of the fixed plate is fixedly connected to the bending seat, and the center of the bending portion is driven to rotate by a motor assembly.

[0020] In one embodiment, the fixing assembly includes a support column, the outer diameter of the support column is equal to the inner diameter of the pipe, the support column is arranged between the bending part and the bending seat, one side of the support column is fixedly connected to the bottom plate, the lower side of the bottom plate is fixedly connected to the fixed arc plate, the distance between the fixed arc plate and the support column is equal to the wall thickness of the pipe, and the upper side of the support column is similarly provided with a movable arc plate, the two sides of the movable arc plate are slidably matched with the bottom plate and the end face of the bending part, and the upper end of the movable arc plate is provided with a plurality of telescopic rods. A spring part is provided on the outside of the telescopic rod one, and a contour strip is provided on the upper end of the telescopic rod one, and the contour strip is fixedly connected to the bottom plate, and the contour strip and the fixed arc plate are both fixed on the end surface of the bending portion, and the upper end of the movable arc plate is fixedly connected to several groups of wedge blocks three, and rollers are correspondingly provided on the inclined surfaces of the wedge blocks three, and square frames are rotatably connected on both sides of the rollers, and sliding grooves are provided on the inner ends of the bottom plate and the bending portion, and the two sides of the square frame slide on the inner sides of the sliding grooves, and the square frame is driven to move by the cylinder assembly.

[0021] In one embodiment, the cutting assembly is arranged at the junction of the bending seat and the material guide seat, and the cutting assembly includes a rotary cutter and a supporting knife holder, the rotary cutter is arranged in the supporting knife holder, and the two ends of the outer side of the supporting knife holder are slidingly matched with a fixed frame, the fixed frame is fixed to the lower end of the material guide seat, and the lower end of the fixed frame is fixedly connected to a cylinder four, and the cylinder four drives the supporting knife holder to move, and the material guide seat is provided with a plurality of telescopic rods two at one end close to the bending seat, and a spring part is provided on the outer side of the telescopic rod two, and a movable plate is provided on one side of the telescopic rod two, and a plurality of through holes are opened on the movable plate. The bending seat is arranged similarly at the opposite end.

[0022] In one embodiment, the lifting mechanism includes a plurality of supporting legs, the upper ends of the supporting legs are fixedly connected to a partition, the partition is fixedly connected to a fixed frame, the upper end of the partition is fixedly connected to cylinder 2, the cylinder 2 is used to drive the bending seat, one side of the partition is fixedly connected to a fixed column, the upper end of the fixed column is in contact with the bending seat, the upper end of the partition is provided with a plurality of telescopic columns, the upper end of the telescopic column is connected to the bending seat, the lower side of the bending seat is connected to the grinding part 2, and the upper side of the material guide seat is connected to the grinding part 1.

[0023] In one embodiment, the grinding part 1 includes a vertical plate, which is fixed to the upper end of the material guide seat, and a horizontal plate is provided on one side of the vertical plate, and a plurality of grinding heads are rotatably connected to one side of the horizontal plate, and a plurality of push plates are fixedly connected to one side of the horizontal plate, and the grinding heads are driven to rotate by a motor assembly, and one end of the vertical plate is fixedly connected to a cylinder 3, and the cylinder 3 is used to drive the horizontal plate to move, and the rack part includes a rack 1 and a rack 2, and both ends of the horizontal plate are fixedly connected to the rack 1, and the lower end of the rack 1 is meshed with a gear, and both ends of the fixed frame are fixedly connected to an extension plate, and the gear is rotatably connected to the extension plate;

[0024] The second grinding part is similarly provided with a transverse plate, a grinding head and a push plate. The transverse plate is slidably matched with the bending seat. The second rack is fixed at both ends of the transverse plate, and the second rack is correspondingly arranged with the gear.

[0025] In one embodiment, a discharge hole is provided through the center of the support column, and the bottom plate is also provided with a discharge hole. The discharge assembly includes a discharge rod, and the discharge rod is driven to move by a cylinder assembly. The discharge rod passes through the discharge hole to push the molded part into the receiving assembly.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The feeding assembly is provided to perform intermittent feeding of the pipe material. When the feed seat moves forward, the wedge block part is driven to move upward, so that the wedge block part pushes the rubber strip upward, cooperates with the feed wheel to clamp the pipe material, and at the same time follows the feed seat forward. The feed wheel rolls accordingly, so that when the feed seat moves forward, the pipe material is fed. When the feed seat returns to its original position, the wedge block part and the rubber strip return to their original position, and the pipe material is released. When the feed seat returns to its original position, the pipe material is automatically released. The degree of automation is high. The pipe material can be automatically fed by controlling the forward and reset of the feed seat. There is no need to control the clamping device to clamp and release the pipe material. The work efficiency is higher and the cost is lower.

[0028] 2. By setting a fixing component to assist the bending component in the bending work, the fixing component fixes one end of the pipe fitting at one end of the bending part. As the bending part rotates, the fixed end is driven to rotate, which has a better bending effect and the pipe fitting is more stable during the bending process.

[0029] 3. By setting the first and second grinding parts, the two cut surfaces formed after the pipe material is cut can be ground at the same time. The cut pipe is pushed upward by the lifting mechanism, so that the two cut surfaces are staggered. Then, the two rack parts are relatively engaged with the two sides of the gear, so that the two rack parts can simultaneously drive the two grinding parts to move in opposite directions, and the two staggered cut surfaces are ground at the same time. Finally, the burrs on both end surfaces of the U-shaped tube can be removed, the work efficiency is high, and the quality of the U-shaped tube product is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0031] In the attached figure:

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic front cross-sectional view of the present invention;

[0034] Figure 3 It is a three-dimensional schematic diagram of the interior of the feed seat of the present invention;

[0035] Figure 4 yes Figure 2 A local enlarged schematic diagram of area A;

[0036] Figure 5 is a schematic top cross-sectional view of the guide sleeve of the present invention;

[0037] Figure 6 is a schematic side cross-sectional view of the ratchet mechanism of the present invention;

[0038] Figure 7 is a three-dimensional schematic diagram of a bending assembly of the present invention;

[0039] Figure 8 It is a schematic diagram of the internal three-dimensional structure of the fixing assembly of the present invention;

[0040] Figure 9 It is a partial three-dimensional schematic diagram of the present invention;

[0041] Figure 10 is a perspective schematic diagram of a grinding assembly of the present invention;

[0042] In the figure: 1. Bending assembly; 101. Bending portion; 102. Bending seat; 103. Fixed plate; 104. Support column; 105. Bottom plate; 106. Fixed curved plate; 107. Movable curved plate; 108. Profiling strip; 109. Wedge block 3; 110. Roller; 111. Square frame; 112. Slideway;

[0043] 2. Grinding assembly; 201. Gear; 202. Vertical plate; 203. Horizontal plate; 204. Grinding head; 205. Cylinder 3; 206. Rack 1; 207. Rack 2; 208. Push plate; 209. Extension plate;

[0044] 3. Feed assembly; 301. Rubber strip; 302. Feed wheel; 303. Feed seat; 304. Square groove; 305. Wedge 1; 306. Wedge 2; 307. Telescopic rod; 308. Baffle; 309. Guide sleeve; 310. Guide post; 311. Support plate; 312. Clamping plate; 313. Groove;

[0045] 4. Discharge assembly; 401. Discharge hole; 402. Discharge rod;

[0046] 5. Positioning assembly; 501. Rubber wheel; 502. Ratchet; 503. Pawl; 504. Support block; 505. Rotating rod;

[0047] 6. Lifting mechanism; 601. Supporting foot; 602. Cylinder 2; 603. Telescopic column; 604. Partition; 605. Fixed column;

[0048] 7. Material receiving assembly;

[0049] 8. Material guide seat; 801. Telescopic rod 2; 802. Moving plate;

[0050] 9. Rotary cutter; 901. Supporting knife holder; 902. Fixed frame; 904. Cylinder four. DETAILED DESCRIPTION

[0051] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0052] See also Figure 1-10 The present invention provides a technical solution: a U-shaped tube processing system for a clothes dryer heat exchanger, comprising a bending component 1, a lifting mechanism 6, a fixing component, a grinding component 2, a feeding component 3, a cutting component, a discharge component 4, a positioning component 5 and a receiving component 7; wherein,

[0053] The feeding assembly 3 is used for intermittent feeding of pipe materials. The feeding assembly 3 includes a wedge block, a rubber strip 301, a feeding seat 303 and a feeding wheel 302. The feeding seat 303 drives the wedge block to move up and down by reciprocating motion. The wedge block is connected to the rubber strip 301. The rubber strip 301 and the feeding wheel 302 feed or reset the pipe material relative to each other by clamping or releasing the pipe material.

[0054] The positioning assembly 5 is provided on one side of the feeding assembly 3. The positioning assembly 5 is used to position the feeding pipe material. The positioning assembly 5 includes a ratchet mechanism and a plurality of rubber wheels 501. The rubber wheels 501 are driven by the ratchet mechanism to realize unidirectional rotation.

[0055] The fixing assembly is arranged on the inner side of the bending assembly 1, and is used to receive the fed pipe material and fix its head end on the bending assembly 1;

[0056] The cutting assembly is used to cut the fixed pipe into pipe fittings of corresponding lengths and form two cut surfaces accordingly;

[0057] The pipe is moved by the lifting mechanism 6 and the two cut surfaces are staggered;

[0058] The grinding assembly 2 includes a grinding part 1, a grinding part 2, a pair of rack parts, and a gear 201. The grinding part 1 and the grinding part 2 are arranged opposite to each other, and the two rack parts are relatively meshed on both sides of the gear 201. The two rack parts respectively drive the grinding part 1 and the grinding part 2 to move in opposite directions and grind the two cross sections simultaneously.

[0059] The bending assembly 1 is arranged after the grinding assembly 2. The bending assembly 1 includes a bending portion 101. The fixing assembly is arranged on one side of the bending portion 101. The bending portion 101 drives the fixing assembly and one end of the pipe to rotate and bend it.

[0060] The unloading assembly 4 is used to push the bent U-shaped tube body into the receiving assembly 7.

[0061] Specifically, the staff first places a number of pipe materials to be processed on the feeding assembly 3, and feeds the pipe materials intermittently through the feeding assembly 3. When the feed seat 303 moves forward, the wedge block part is driven to move upward, so that the wedge block part pushes the rubber strip 301 upward, cooperates with the feed wheel 302, and clamps the pipe material through friction, and at the same time follows the feed seat 303 forward, and the feed wheel 302 rolls accordingly, so that when the feed seat 303 moves forward, the pipe material is automatically fed, and when the feed seat 303 resets and returns, the wedge block part and the rubber strip 301 return to their original positions, and the pipe material is automatically released. The degree of automation is high, and the pipe material can be automatically fed by controlling the advancement and reset of the feed seat 303, without the need for additional control of the clamping device to clamp and release the pipe material, so the work efficiency is higher and the cost is lower.

[0062] The feeding pipe is positioned in one direction by the positioning assembly 5. The unidirectional rotation characteristic of the ratchet mechanism is used to control the unidirectional rotation of the rubber wheel 501. As a result, the friction between the rubber wheel 501 and the pipe allows the pipe to move forward only and not backward, thus ensuring the stability and synchronization of the feeding of multiple pipes.

[0063] The incoming pipe is fed into the fixing assembly to fix the head end of the pipe, and then the positioning assembly 5 fixes the back side of the pipe, making it easier to perform cutting, grinding and bending.

[0064] After cutting, the pipe material forms two cut surfaces, which can be polished simultaneously by the first and second polishing parts. The cut pipe is pushed upward by the lifting mechanism 6, thereby staggering the two cut surfaces. Then, the two rack parts are relatively engaged with the two sides of the gear 201, so that the two rack parts can simultaneously drive the two polishing parts to move in opposite directions, and the two staggered cut surfaces are polished simultaneously. Finally, the burrs on both end surfaces of the U-shaped pipe can be removed, the working efficiency is high, and the quality of the U-shaped pipe product is good.

[0065] The fixing assembly fixes the head end of the pipe to one end of the bending part 101. As the bending part 101 rotates, the fixed end of the pipe is driven to rotate, making the pipe more stable during the bending process.

[0066] Finally, the formed U-shaped tube is pushed into the receiving assembly 7 through the unloading assembly 4, completing the automated integrated processing of the U-shaped tube with high processing efficiency and good forming quality.

[0067] The upper side of the feed seat 303 is provided with several groups of pipe grooves, and the feed wheel 302 is provided with several groups. The feed wheel 302 is correspondingly arranged on the upper side of the pipe groove. The gap between the pipe groove and the feed wheel 302 is matched with the pipe material. The lower end of the pipe groove is provided with a square groove 304. The rubber strip 301 slides with the square groove 304. The wedge block portion includes a wedge block 1 305 and a wedge block 2 306. The inclined surfaces of the two wedge blocks are arranged oppositely. The lower end of the rubber strip 301 is fixedly connected to the wedge block 2 306. The lower end of the rubber strip 301 is provided with a telescopic rod 307. The lower end of the telescopic rod 307 is provided with a baffle 308. The baffle 308 is fixed inside the square groove 304. A guide sleeve 309 is provided inside the feed seat 303, and the guide sleeve 309 passes through the feed seat 303 and slides with it. A wedge block 305 is fixed to the upper end of the guide sleeve 309, and a guide post 310 is slidably fitted on the inner side of the guide sleeve 309. The friction between the guide post 310 and the guide sleeve 309 is greater than the friction between the guide sleeve 309 and the feed seat 303. One end of the guide post 310 is fixedly connected to a support plate 311, and the upper end of the support plate 311 is fixedly connected to a cylinder 1, which is used to drive the feed seat 303 to move. The other end of the guide post 310 is fixedly connected to the material guide seat 8, and a pipe groove is also provided on the upper side of the material guide seat 8.

[0068] Specifically, the feed seat 303 is pushed by the cylinder 1, and is guided along the guide column 310 for reciprocating linear transportation. Since the friction between the guide column 310 and the guide sleeve 309 is greater than the friction between the guide sleeve 309 and the feed seat 303, when the feed seat 303 moves forward, the guide sleeve 309 is partially separated from the feed seat 303, so that the wedge block 1 305 on the guide sleeve 309 pushes the inclined surface of the wedge block 2 306. Under the guidance of the telescopic rod 307, the wedge block 2 306 pushes the rubber strip 301 to rise and move upward from the bottom of the pipe groove, thereby The pipe is pushed upward, contacting the upper feed wheel 302. As the feed seat 303 moves forward, the friction of the rubber strip 301 drives the pipe forward onto the guide seat 8. The feed wheel 302 rolls accordingly, achieving direct and automatic feeding of the pipe simply by moving the feed seat 303. When the feed seat 303 is reset, the guide sleeve 309 does not move first, while the feed seat 303 moves and re-merges with it, returning the wedge 306 to its original position and allowing the rubber strip 301 to move back to the bottom of the groove, avoiding frictional contact with the pipe and thus preventing it from being pulled back. No other complex clamping structure is required to drive the pipe feeding; the pipe feeding can be achieved by simply driving the feed seat 303 to move. This is convenient to operate, simple in structure, saves steps, and improves work efficiency.

[0069] A groove 313 is formed at one end of the feed seat 303 , and a clamping plate 312 is fixedly connected to the outer side of the guide sleeve 309 . The clamping plate 312 slides in the groove 313 , and one end of the baffle 308 contacts the wedge block 1 305 .

[0070] Specifically, when the feed seat 303 feeds forward, the clamping plate 312 at one end of the guide sleeve 309 will enter the groove 313, thereby limiting the positions of the feed seat 303 and the guide sleeve 309, preventing the guide sleeve 309 from completely separating from the feed seat 303. When the feed seat 303 is reset, the baffle 308 contacts one end of the wedge block 305, also limiting the two.

[0071] The ratchet mechanism includes a ratchet 502, a rotating rod 505 fixedly connected to the inner side of the rubber wheel 501, and support blocks 504 are rotatably connected at both ends of the rotating rod 505. The support blocks 504 are fixed on both sides of the material guide seat 8. The rotating rod 505 extends to the outside of the support block 504 and is connected to the ratchet 502. A pawl 503 is provided on the lower side of the ratchet 502. The pawl 503 is rotatably connected to one side of the material guide seat 8 and is provided with a torsion spring. The pipe material is in contact with the rubber wheel 501 and the material guide seat 8.

[0072] Specifically, after the pipe material fed by the feed seat 303 enters the pipe groove in the material guide seat 8, it passes through the corresponding rubber wheel 501. The rubber wheel 501 is connected to the ratchet 502 through the rotating rod 505. The ratchet 502 and the pawl 503 are engaged with each other, so that the rubber wheel 501 can only rotate in one direction, that is, the pipe material can only be transported forward and cannot move backward, further improving the stability of the pipe material feeding.

[0073] Several groups of bending tube grooves are provided on the surface of the bending portion 101. The bending portion 101 is configured as a U-shaped block. A bending seat 102 is provided on the lower side of the bending portion 101. Several tube grooves are also provided on the upper side of the bending seat 102. The bending portion 101 and the bending seat 102 are in contact with each other. A fixed plate 103 is rotatably connected to the center of the bending portion 101. The lower side of the fixed plate 103 is fixedly connected to the bending seat 102. The center of the bending portion 101 is driven to rotate by a motor assembly.

[0074] Specifically, when the pipe is fed into the pipe groove on the bending seat 102, the head end of the pipe is fixed by the fixing assembly, the bending seat 102 and the bending portion 101 contact each other, and the bending pipe groove and the pipe groove correspond to each other. When the motor assembly drives the center of the bending portion 101 to rotate, the head end of the pipe is fixed by the fixing assembly, and the head end of the pipe follows the rotation, and the pipe is in the pipe groove of the bending seat 102. As the bending portion 101 rotates, the pipe is bent into shape by the bending portion 101 under the restriction of the bending seat 102. One end of the pipe is fixed by the fixing assembly, making the bending process more stable.

[0075] The fixing assembly includes a support column 104, the outer diameter of the support column 104 is equal to the inner diameter of the pipe, the support column 104 is arranged in the middle of the bending portion 101 and the bending seat 102, one side of the support column 104 is fixedly connected to the bottom plate 105, the lower side of the bottom plate 105 is fixedly connected to the fixed arc plate 106, the distance between the fixed arc plate 106 and the support column 104 is equal to the wall thickness of the pipe, and the upper side of the support column 104 is similarly provided with a movable arc plate 107, both sides of the movable arc plate 107 are slidably matched with the bottom plate 105 and the end face of the bending portion 101, and the upper end of the movable arc plate 107 is provided with a plurality of telescopic rods. A spring member is provided on the outside of the telescopic rod 105, and a profiling strip 108 is provided on the upper end of the telescopic rod 108. The profiling strip 108 is fixedly connected to the bottom plate 105, and the profiling strip 108 and the fixed arc plate 106 are fixed on the end face of the bending portion 101. The upper end of the movable arc plate 107 is fixedly connected to several groups of wedge blocks 3 109, and rollers 110 are correspondingly provided on the inclined surfaces of the wedge blocks 3 109. Square frames 111 are rotatably connected on both sides of the rollers 110. A slide groove 112 is provided on the inner end of the bottom plate 105 and the bending portion 101. Both sides of the square frame 111 slide on the inner side of the slide groove 112, and the square frame 111 is driven to move by the cylinder assembly.

[0076] Specifically, when the pipe is fed into the fixed assembly, the pipe is first inserted into the outer side of the support column 104, and the head end of the pipe is against the bottom plate 105, and one side of the pipe is in contact with the fixed curved plate 106. At this time, the square frame 111 is pushed by the cylinder assembly, and the square frame 111 drives several rollers 110 to move along the inclined surface of the wedge block 3 109. Since the two sides of the square frame 111 are trapped in the slide grooves 112 on both sides to slide, the rollers 110 push the wedge block 3 109 down while rolling, and the wedge block 3 109 pushes the movable curved plate 107. Under the guidance of the telescopic rod 1, the movable curved plate 107 descends and cooperates with the fixed curved plate 106 to clamp the pipe on the outer side of the support column 104. When it needs to be released, the cylinder assembly is controlled to pull back the square frame 111. Under the reset action of the spring member, the movable curved plate 107 returns to its original position. The degree of automation is high and the structural design is relatively reasonable.

[0077] The support column 104 supports the pipe material on the inside to prevent it from deforming during clamping or bending, thereby improving stability and facilitating the subsequent cutting work of the cutting assembly and the grinding work of the grinding assembly 2. Finally, it is convenient for the bending portion 101 to be bent and formed, which is highly practical.

[0078] The cutting assembly is arranged at the junction of the bending seat 102 and the material guide seat 8. The cutting assembly includes a rotary cutter 9 and a support knife holder 901. The rotary cutter 9 is arranged in the support knife holder 901. The two ends of the outer side of the support knife holder 901 are slidingly matched with a fixed frame 902. The fixed frame 902 is fixed to the lower end of the material guide seat 8. The lower end of the fixed frame 902 is fixedly connected to a cylinder four 904. The cylinder four 904 drives the support knife holder 901 to move. A plurality of telescopic rods 801 are provided at one end of the material guide seat 8 close to the bending seat 102. A spring member is provided on the outer side of the telescopic rod 801. A movable plate 802 is provided on one side of the telescopic rod 801. A plurality of through holes are opened on the movable plate 802. The opposite end of the bending seat 102 is arranged in the same way.

[0079] Specifically, after the head end of the pipe is fixed by the fixing assembly, the supporting knife holder 901 is pushed to move by the cylinder 904, and the supporting knife holder 901 drives the rotary cutter 9 to rise to cut a number of pipes. The rotary cutter 9 is driven by the motor. On the opposite surfaces of the guide seat 8 and the bending seat 102, a number of telescopic rods 801, spring members and movable plates 802 are provided. The distance between the two movable plates 802 is just convenient for the rotary cutter 9 to pass through. The telescopic rods 801 and the movable plates 802 can support the pipe passing through the through hole, prevent the pipe from bending and deforming at the cutting point, and improve the stability of the cutting.

[0080] The lifting mechanism 6 includes several supporting legs 601, the upper end of the supporting legs 601 is fixedly connected to a partition 604, the partition 604 is fixedly connected to the fixed frame 902, the upper end of the partition 604 is fixedly connected to the cylinder 2 602, the cylinder 2 602 is used to drive the bending seat 102, one side of the partition 604 is fixedly connected to a fixed column 605, the upper end of the fixed column 605 is in contact with the bending seat 102, the upper end of the partition 604 is provided with several telescopic columns 603, the upper end of the telescopic column 603 is connected to the bending seat 102, the lower side of the bending seat 102 is connected to the grinding part 2, and the upper side of the material guide seat 8 is connected to the grinding part 1.

[0081] Specifically, after the pipe is cut, a short pipe and two corresponding cut surfaces are formed. The short pipe is located on the bending seat 102, and the head end is clamped by the fixing assembly. Then, the bending seat 102 is pushed up by the second cylinder 602, and the telescopic column 603 is used as a guide to make the bending seat 102 rise with the pipe, and the cut surface of the pipe is staggered with the cut surface of the pipe. Among them, the second grinding part is set at the bottom of the bending seat 102, and rises together with the push of the second cylinder 602 until the two cut surfaces correspond to the corresponding grinding parts. The second cylinder 602 stops lifting, so that the grinding part can grind a pair of pipes and the grinding part can grind a pair of pipes at the same time.

[0082] The grinding part 1 includes a vertical plate 202, which is fixed to the upper end of the material guide seat 8. A horizontal plate 203 is provided on one side of the vertical plate 202. One side of the horizontal plate 203 is rotatably connected to a plurality of groups of grinding heads 204. One side of the horizontal plate 203 is fixedly connected to a plurality of groups of push plates 208. The grinding heads 204 are driven to rotate by a motor assembly. One end of the vertical plate 202 is fixedly connected to a cylinder 3 205. The cylinder 3 205 is used to drive the horizontal plate 203 to move. The rack part includes a rack 1 206 and a rack 207. Both ends of the horizontal plate 203 are fixedly connected to the rack 1 206. The lower end of the rack 1 206 is meshed with the gear 201. Both ends of the fixed frame 902 are fixedly connected to an extension plate 209. The gear 201 is rotatably connected to the extension plate 209.

[0083] Similarly, the second grinding part is provided with a horizontal plate 203, a grinding head 204 and a push plate 208. The horizontal plate 203 is slidably matched with the bending seat 102. The second rack 207 is fixed at both ends of the horizontal plate 203. The second rack 207 is correspondingly arranged with the gear 201.

[0084] Specifically, after the grinding part and the corresponding cutting surface are aligned, the rack 207 is also raised to a position where it meshes with the gear 201. The cylinder 3 205 in the grinding part pushes the cross plate 203, the push plate 208, the rack 1 206 and the grinding heads 204 to move. At this time, the rack 1 206 meshes with the gear 201, and the gear 201 rotates and meshes with the rack 207, so that the rack 207 and the rack 1 206 move in opposite directions, so that the grinding heads 204 of the two grinding parts grind the two cutting surfaces at the same time, saving the cost of redundant drive components and achieving good synchronization performance.

[0085] The push plate 208 is set to push the movable plate 802 first, and the spring member is compressed, thereby completely revealing the two cross sections, making it easier for the grinding head 204 to perform grinding;

[0086] During grinding, since the fixing assembly fixes one end of the pipe and the movable plate 802 is sleeved on the outside of the pipe, the pipe is supported to avoid vibration caused by grinding, which may cause grinding deviation. A ratchet mechanism is set on one side of the pipe to support it, which also ensures the stability of grinding.

[0087] A discharge hole 401 is provided through the center of the support column 104, and the bottom plate 105 is also provided with a discharge hole 401. The discharge assembly 4 includes a discharge rod 402, which is driven to move by the cylinder assembly. The discharge rod 402 passes through the discharge hole 401 to push the molded part into the receiving assembly 7.

[0088] Specifically, after the bending portion 101 bends the pipe into shape, the curved surface of the bending portion 101 is aligned with the receiving component 7 (eg Figure 2 As shown), the fixing assembly loosens the U-shaped tube, and drives the discharge rod 402 through the cylinder assembly to penetrate into the discharge hole 401, thereby pushing the inside of the formed U-shaped tube and pushing it out without affecting the surface of the U-shaped tube. Finally, it falls into the receiving assembly 7 to complete the collection.

[0089] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or interconnected connections; they can refer to direct connections, internal connectivity between two components, or an interaction between two components. A person of ordinary skill in the art will be able to understand the meaning of the above terms in this application based on the specific circumstances.

[0090] The above is a detailed introduction to a U-shaped tube processing system for a dryer heat exchanger provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A U-shaped tube processing system for a clothes dryer heat exchanger, comprising a bending assembly (1), a lifting mechanism (6), a fixing assembly, a grinding assembly (2), a feeding assembly (3), a cutting assembly, a discharge assembly (4), a positioning assembly (5) and a receiving assembly (7); wherein, The feeding assembly (3) is used for intermittent feeding of pipe materials. The feeding assembly (3) comprises a wedge block, a rubber strip (301), a feeding seat (303) and a feeding wheel (302). The feeding seat (303) drives the wedge block to move up and down by reciprocating movement. The wedge block is connected to the rubber strip (301). The rubber strip (301) and the feeding wheel (302) relatively feed or reset the pipe material by clamping or releasing the pipe material. The positioning assembly (5) is arranged on one side of the feeding assembly (3), and the positioning assembly (5) is used to position the fed pipe material. The positioning assembly (5) includes a ratchet mechanism and a plurality of groups of rubber wheels (501). The rubber wheels (501) are driven by the ratchet mechanism to realize unidirectional rotation. The fixing assembly is arranged on the inner side of the bending assembly (1), and is used to receive the fed pipe material and fix its head end on the bending assembly (1); The cutting assembly is used to cut the fixed pipe into pipes of corresponding lengths and form two cut surfaces accordingly; The pipe is driven to move by a lifting mechanism (6) so that the two cut surfaces are staggered with each other; The grinding assembly (2) comprises a grinding part 1, a grinding part 2, a pair of rack parts and a gear (201); the grinding part 1 and the grinding part 2 are arranged opposite to each other, the two rack parts are relatively meshed on both sides of the gear (201), and the two rack parts respectively drive the grinding part 1 and the grinding part 2 to move in opposite directions and grind the two cut surfaces simultaneously; The bending assembly (1) is arranged after the grinding assembly (2), the bending assembly (1) comprises a bending portion (101), the fixing assembly is arranged on one side of the bending portion (101), and the bending portion (101) drives the fixing assembly and one end of the pipe to rotate and bend the pipe; The unloading assembly (4) is used to push the bent U-shaped tube body into the receiving assembly (7).

2. The U-shaped tube processing system for a clothes dryer heat exchanger according to claim 1, characterized in that: The upper side of the feed seat (303) is provided with a plurality of tube grooves, and the feed wheel (302) is provided with a plurality of groups. The feed wheel (302) is correspondingly provided on the upper side of the tube groove. The tube groove and the feed wheel (302) are in clearance with the tube material. The lower end of the tube groove is provided with a square groove (304). The rubber strip (301) is in sliding cooperation with the square groove (304). The wedge block portion includes a wedge block 1 (305) and a wedge block 2 (306). The inclined surfaces of the two wedge blocks are arranged opposite to each other. The lower end of the rubber strip (301) is fixedly connected with the wedge block 2 (306). The lower end of the rubber strip (301) is provided with a telescopic rod (307). The lower end of the telescopic rod (307) is provided with a baffle (308). The baffle (308) is fixed inside the square groove (304). The feed seat (303) is provided with a guide sleeve (309) inside, the guide sleeve (309) passes through the feed seat (303) and slides with it, the wedge block (305) is fixed on the upper end of the guide sleeve (309), the inner side of the guide sleeve (309) is slidably matched with a guide column (310), the friction between the guide column (310) and the guide sleeve (309) is greater than the friction between the guide sleeve (309) and the feed seat (303), one end of the guide column (310) is fixedly connected to a support plate (311), the upper end of the support plate (311) is fixedly connected to a cylinder (311), the cylinder (311) is used to drive the feed seat (303) to move, the other end of the guide column (310) is fixedly connected to a material guide seat (8), and a pipe groove is also provided on the upper side of the material guide seat (8).

3. The U-shaped tube processing system for a clothes dryer heat exchanger according to claim 2, characterized in that: A groove (313) is provided at one end of the feed seat (303), a clamping plate (312) is fixedly connected to the outer side of the guide sleeve (309), the clamping plate (312) slides in the groove (313), and one end of the baffle (308) contacts with a wedge block (305).

4. The U-shaped tube processing system for a clothes dryer heat exchanger according to claim 2, characterized in that: The ratchet mechanism comprises a ratchet (502), a rotating rod (505) fixedly connected to the inner side of the rubber wheel (501), and support blocks (504) rotatably connected at both ends of the rotating rod (505), the support blocks (504) being fixed on both sides of the material guide seat (8), the rotating rod (505) extending to the outer side of the support block (504) and connected to the ratchet (502), a pawl (503) being provided on the lower side of the ratchet (502), the pawl (503) being rotatably connected to one side of the material guide seat (8) and provided with a torsion spring, and the pipe material is in close contact with the rubber wheel (501) and the material guide seat (8).

5. The U-shaped tube processing system for a clothes dryer heat exchanger according to claim 2, characterized in that: The surface of the bending portion (101) is provided with a plurality of bending tube grooves. The bending portion (101) is configured as a U-shaped block. A bending seat (102) is provided on the lower side of the bending portion (101). The upper side of the bending seat (102) is also provided with a plurality of tube grooves. The bending portion (101) and the bending seat (102) are in contact with each other. A fixed plate (103) is rotatably connected to the center of the bending portion (101). The lower side of the fixed plate (103) is fixedly connected to the bending seat (102). The center of the bending portion (101) is driven to rotate by a motor assembly.

6. The U-shaped tube processing system for a clothes dryer heat exchanger according to claim 5, characterized in that: The fixing assembly includes a support column (104), the outer diameter of the support column (104) is equal to the inner diameter of the pipe material, the support column (104) is arranged in the middle of the bending part (101) and the bending seat (102), one side of the support column (104) is fixedly connected to the bottom plate (105), the lower side of the bottom plate (105) is fixedly connected to the fixed arc plate (106), the distance between the fixed arc plate (106) and the support column (104) is equal to the wall thickness of the pipe material, and the upper side of the support column (104) is similarly provided with a movable arc plate (107), both sides of the movable arc plate (107) are slidably matched with the end surface of the bottom plate (105) and the bending part (101), and the upper end of the movable arc plate (107) is provided with a plurality of telescopic rods, and the telescopic rods are provided. A spring member is provided on the outer side of the telescopic rod; a profiling strip (108) is provided on the upper end of the telescopic rod; the profiling strip (108) is fixedly connected to the bottom plate (105); the profiling strip (108) and the fixed arc plate (106) are both fixed on the end surface of the bending portion (101); the upper end of the movable arc plate (107) is fixedly connected to a plurality of groups of wedge blocks (109); rollers (110) are correspondingly provided on the inclined surfaces of the wedge blocks (109); square frames (111) are rotatably connected on both sides of the rollers (110); a sliding groove (112) is provided on one end of the inner side of the bottom plate (105) and the bending portion (101); the two sides of the square frame (111) slide on the inner side of the sliding groove (112); the square frame (111) is driven to move by a cylinder assembly.

7. The U-shaped tube processing system for a clothes dryer heat exchanger according to claim 6, characterized in that: The cutting assembly is arranged at the junction of the bending seat (102) and the material guide seat (8), and the cutting assembly includes a rotary cutter (9) and a support knife frame (901). The rotary cutter (9) is arranged in the support knife frame (901). The two ends of the outer side of the support knife frame (901) are slidably matched with a fixed frame (902). The fixed frame (902) is fixed to the lower end of the material guide seat (8). The lower end of the fixed frame (902) is fixedly connected to a cylinder. Four (904), the cylinder four (904) drives the support tool holder (901) to move, and the material guide seat (8) is provided with a plurality of telescopic rods (801) at one end close to the bending seat (102), and a spring member is provided on the outer side of the telescopic rods (801), and a movable plate (802) is provided on one side of the telescopic rods (801), and a plurality of through holes are opened on the movable plate (802), and the bending seat (102) is provided with the same arrangement at the opposite end.

8. The U-shaped tube processing system for a clothes dryer heat exchanger according to claim 7, characterized in that: The lifting mechanism (6) includes a plurality of supporting legs (601), the upper end of the supporting legs (601) is fixedly connected to a partition (604), the partition (604) is fixedly connected to a fixed frame (902), the upper end of the partition (604) is fixedly connected to a second cylinder (602), the second cylinder (602) is used to drive the bending seat (102), one side of the partition (604) is fixedly connected to a fixed column (605), the upper end of the fixed column (605) is in contact with the bending seat (102), the upper end of the partition (604) is provided with a plurality of telescopic columns (603), the upper end of the telescopic columns (603) is connected to the bending seat (102), the lower side of the bending seat (102) is connected to the second grinding part, and the upper side of the material guide seat (8) is connected to the first grinding part.

9. The U-shaped tube processing system for a clothes dryer heat exchanger according to claim 8, characterized in that: The grinding part includes a vertical plate (202), the vertical plate (202) is fixed to the upper end of the material guide seat (8), a horizontal plate (203) is provided on one side of the vertical plate (202), a plurality of groups of grinding heads (204) are rotatably connected to one side of the horizontal plate (203), a plurality of groups of push plates (208) are fixedly connected to one side of the horizontal plate (203), the grinding heads (204) are driven to rotate by a motor assembly, and one end of the vertical plate (202) is fixedly connected to a cylinder. Three (205), the cylinder three (205) is used to drive the horizontal plate (203) to move, the rack portion includes a rack one (206) and a rack two (207), both ends of the horizontal plate (203) are fixedly connected to the rack one (206), the lower end of the rack one (206) and the gear (201) are meshed with each other, the two ends of the fixed frame (902) are fixedly connected to the extension plate (209), and the gear (201) and the extension plate (209) are rotatably connected; The second grinding part is similarly provided with a transverse plate (203), a grinding head (204) and a push plate (208); the transverse plate (203) is slidably matched with the bending seat (102); the second rack (207) is fixed at both ends of the transverse plate (203); and the second rack (207) is correspondingly provided with the gear (201).

10. The U-shaped tube processing system for a clothes dryer heat exchanger according to claim 6, characterized in that: A discharge hole (401) is provided through the center of the support column (104), and the bottom plate (105) is also provided with a discharge hole (401). The discharge assembly (4) includes a discharge rod (402), and the discharge rod (402) is driven to move by a cylinder assembly. The discharge rod (402) passes through the discharge hole (401) to push the molded part into the receiving assembly (7).

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