Fixed-length limiting tensioning equipment for industrial chain machining and manufacturing

Abstract

The invention discloses fixed-length limiting tensioning equipment for industrial chain machining and manufacturing, which comprises a support frame, the support frame is used for supporting and positioning the fixed-length limiting tensioning equipment for industrial chain machining and manufacturing, one side of the support frame is connected with a tensioning control mechanism, and one end of the support frame is fixedly connected with an unwinding control mechanism. According to the chain tensioning device, through reset elastic potential energy of a reset spring inserted in the outer wall of a positioning rod in a penetrating mode, a tensioning shaft drives a chain to conduct continuous tensioning degree adjustment, one end of a positioning rack is in contact with a first contact sensor fixed to one end of the inner wall of a positioning groove, and then the chain is tensioned; the first contact sensor controls the second motor and the third motor to rotate reversely, the unwinding shaft conducts winding of a certain length, through tensioning adjustment of the reset spring, when the end of the positioning rack makes contact with the second contact sensor, the second motor and the third motor rotate normally, and the unwinding shaft conducts winding of the certain length. And the chain is subjected to continuous fixed-length limiting tensioning.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial chain processing, and in particular relates to a fixed-length limit tensioning device for industrial chain processing and manufacturing. Background Art

[0002] Industrial chain is a flexible component composed of adjacent or facing identical parts, usually used for the transmission of machinery, mechanisms and machines. The industrial chain consists of a closed chain and two sprockets, with the characteristics of multi-tooth load-bearing, safety and reliability. It can absorb shock and vibration, suitable for harsh environments with high temperature, dust and humidity, with accurate transmission ratio and high efficiency. When the industrial chain is being processed, it needs to be tensioned in real time to avoid the hidden danger of chain transmission slipping.

[0003] In view of this, Chinese Patent No. CN114104617B proposes a fixed-length limit tensioning device for industrial chain processing and manufacturing. The distance between the fixed block and the driving block can be set by the fixed length distance and the radius of the first rotating shaft and the output gear, so that the chain can be transmitted to the right by a fixed-length tensioning distance after each fixed-length tensioning. After the chain is moved to the fixed-length position for fixed-length tensioning, the chain can be tightened for a certain period of time, which can make the chain more stable after the fixed-length tensioning and will not rebound. However, in the above patents, the fixed-length tensioning transmission distance of the industrial chain is limited. When processing a chain of a certain length, continuous tensioning adjustment cannot be performed. When processing a longer chain, it is difficult to perform self-tensioning adjustment due to its heavy weight, which is not conducive to continuous processing of longer industrial chains.

[0004] Therefore, it is necessary to invent a fixed-length limit tensioning device for industrial chain processing and manufacturing to solve the above problems. Through the control of tension adjustment, longer chains can still be continuously processed and tensioned. Summary of the invention

[0005] In view of the above problems, the present invention provides a fixed-length limit tensioning device for industrial chain processing and manufacturing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fixed-length limit tensioning device for industrial chain processing and manufacturing, comprising a support frame, the support frame is used to support and position the fixed-length limit tensioning device for industrial chain processing and manufacturing, one side of the support frame is connected to a tensioning control mechanism, one end of the support frame is fixedly connected to a reeling control mechanism, and the other side of the top of the support frame is connected to a fixed-length control mechanism, wherein:

[0007] The tensioning control mechanism includes positioning grooves provided at both ends of one side of the support frame and a positioning gear rotatably connected to the middle position of the support frame, positioning racks are meshed on both sides of the tooth surface of the positioning gear, one end of the two positioning racks passes through the positioning grooves and are rotatably provided with a tensioning shaft, a positioning frame is fixedly provided at the middle position of one side of the support frame, a first motor is fixedly provided on one side of the positioning frame, the output end of the first motor is fixedly connected to the middle position of the positioning gear, a positioning seat is fixedly provided at one end of one side of the support frame, a positioning rod is fixedly provided at the middle position of the positioning seat, a return spring is inserted at one end of the outer wall of the positioning rod, and the other end of the outer wall of the positioning rod is inserted and connected with one end of one of the positioning racks, a first contact sensor is fixedly provided at one end of the inner wall of one of the positioning grooves, and a second contact sensor is fixedly provided at the other end of the inner wall of the positioning groove;

[0008] The unwinding control mechanism includes a fixed frame fixed on one side of the supporting frame, a fixed groove is opened in the middle position of the fixed frame, a positioning screw is rotatably provided in the middle position of the fixed groove, a movable frame is threadedly provided on one end of the outer wall of the positioning screw, an unwinding shaft is rotatably provided on the top end of the inner wall of the movable frame, protective frames are fixedly provided on both ends of the outer wall of the unwinding shaft, a second motor is fixedly provided on one side of the fixed frame, an output end of the second motor is fixedly connected to one end of the positioning screw, a third motor is fixedly provided on one side of the movable frame, and an output end of the third motor is fixedly connected to one end of the unwinding shaft.

[0009] Preferably, the fixed-length control mechanism includes two side positioning plates rotating on one side of the support frame, a transmission shaft is fixedly provided at the middle position of the two positioning plates, a protective plate is fixedly provided on one side of the two transmission shafts, a plurality of limit shafts are rotatably provided on one side of the two positioning plates, one end of the two positioning plates passes through the support frame and is fixed with a driving gear, and the tooth surfaces of the two driving gears are meshed with each other.

[0010] Preferably, a limiting frame is fixedly provided at one end of the other side of the support frame, a fourth motor is fixedly provided at one side of the limiting frame, and an output end of the fourth motor is fixedly connected to a middle position of one of the driving gears.

[0011] Preferably, an adjusting shaft is rotatably provided at the bottom end of one side of the support frame.

[0012] Preferably, a pressing shaft is rotatably provided on one side of the support frame close to the adjusting shaft.

[0013] Preferably, both ends of the support frame are connected to a guide mechanism, and the guide mechanism includes two guide shafts rotating on one side of the support frame, one end of the two guide shafts passes through the support frame and is fixed with a guide gear, and the tooth surfaces of the two guide gears are meshed with each other.

[0014] Preferably, a direction limiting wheel is fixedly provided on one side of one of the guide gears, a direction limiting frame is rotatably provided on the side of the support frame close to the direction limiting wheel, a mounting frame is fixedly provided on one end of the support frame close to the direction limiting frame, a sliding groove is provided in the middle position of the mounting frame, a fixing rod is slidably provided on the mounting frame through the sliding groove, a positioning spring is inserted into one end of the outer wall of the fixing rod, one end of the fixing rod is rotatably connected to one side of the direction limiting frame, and a fixing block is fixedly provided on the other end of the fixing rod.

[0015] Preferably, an intelligent control panel is fixedly provided on one side of the support frame, and the first motor, the second motor, the third motor and the fourth motor are all electrically connected to an external power supply through the intelligent control panel.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The present invention uses the reset elastic potential energy of the reset spring inserted in the outer wall of the positioning rod to enable the two positioning racks to respectively drive the two tensioning shafts to slide along the positioning groove through the meshing of the positioning gear, so that the tensioning shaft drives the chain to continuously adjust the tension, and one end of the positioning rack contacts the first contact sensor fixed at one end of the inner wall of the positioning groove, so that the first contact sensor controls the second motor and the third motor to rotate in the opposite direction, so that the unwinding shaft rewinds a certain length, and at the same time, the positioning rack drives the chain to initialize and restore through the tensioning shaft, and through the tensioning adjustment of the reset spring, when the end of the positioning rack contacts the second contact sensor, the second motor and the third motor rotate normally, so that the chain is continuously tensioned with a fixed length and limited position;

[0018] 2. The present invention drives the positioning screw to rotate through the output end of the second motor fixed on one side of the fixed frame, so that the moving frame threadedly connected to the outer wall of the positioning screw moves back and forth along the fixed groove, so that when the unwinding shaft passes through the protective unwinding of the protective frame and the tensioning partial rewinding, the chain reel unwinds in an orderly manner, avoiding the hidden danger of knotting and jamming;

[0019] 3. The present invention drives two positioning disks to rotate toward each other through two driving gears, so that the transmission shaft fixed at the middle position of the two positioning disks clamps the chain for fixed-length transmission. When the limit shaft rotating on one side of the positioning disk contacts the chain, the limit shaft rotates itself without any limit, so that the chain cannot be effectively transmitted when it contacts the limit shaft, so that the chain is transmitted at a fixed length every time the driving gear rotates one circle, making the fixed-length transmission of the chain more stable;

[0020] 4. The present invention protects the transmission of the chain through the mutual meshing of the guide gears fixed on one side of the guide shaft to avoid the hidden danger of slipping. The direction limiting frame rotating on one side of the support frame is squeezed and engaged with one side of the direction limiting wheel through the positioning spring inserted in the outer wall of the fixed rod. Through the control of the direction limiting wheel, the guide mechanism close to the side of the fixed-length control mechanism can only drive the chain to be transported to the fixed-length control mechanism, and the chain transported by the other guide mechanism can move in both directions, so that the chain is protected during unwinding and tensioning, avoiding the reverse rotation of the chain after the fixed-length limit tensioning, and at the same time facilitating the tensioning adjustment of the unprocessed chain to maintain the efficiency of continuous tensioning of the chain.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure distribution on the support frame of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the tension control mechanism of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the unwinding control mechanism of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the fixed length control mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the fixed length control mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the guiding mechanism and guiding positioning structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the guiding mechanism structure of the present invention;

[0031] Fig. 9It is a schematic diagram of the guiding positioning structure of the present invention;

[0032] Fig.10 It is a schematic diagram of the process structure of the present invention.

[0033] In the figure: 1, support frame; 2, tension control mechanism; 201, positioning groove; 202, first contact sensor; 203, positioning gear; 204, positioning frame; 205, positioning rack; 206, tensioning shaft; 207, first motor; 208, positioning seat; 209, positioning rod; 210, reset spring; 211, second contact sensor; 3, unwinding control mechanism; 301, fixed frame; 302, fixed groove; 303, positioning screw rod; 304, second motor; 305, moving frame; 306, unwinding shaft; 30 7. The third motor; 308. The protective frame; 4. The fixed-length control mechanism; 401. The positioning plate; 402. The protective plate; 403. The limiting frame; 404. The fourth motor; 405. The transmission shaft; 406. The limiting shaft; 407. The driving gear; 5. The guiding mechanism; 501. The guiding shaft; 502. The guiding gear; 503. The direction limiting wheel; 504. The direction limiting frame; 505. The mounting frame; 506. The sliding groove; 507. The fixing rod; 508. The positioning spring; 509. The fixing block; 6. The adjusting shaft; 7. The pressing shaft. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides Figure 1-10 The fixed-length limit tensioning device for industrial chain processing and manufacturing shown in the figure comprises a support frame 1, which is used for supporting and positioning the fixed-length limit tensioning device for industrial chain processing and manufacturing. A tensioning control mechanism 2 is connected to one side of the support frame 1, a reeling control mechanism 3 is fixedly connected to one end of the support frame 1, and a fixed-length control mechanism 4 is connected to the other side of the top of the support frame 1, wherein:

[0036] The tensioning control mechanism 2 includes positioning grooves 201 provided at both ends of one side of the support frame 1 and a positioning gear 203 rotatably connected to the middle position of the support frame 1, positioning racks 205 are meshed on both sides of the tooth surface of the positioning gear 203, one end of the two positioning racks 205 passes through the positioning groove 201 and are rotatably provided with a tensioning shaft 206, a positioning frame 204 is fixedly provided at the middle position of one side of the support frame 1, a first motor 207 is fixedly provided on one side of the positioning frame 204, and the output end of the first motor 207 is fixedly connected to the middle position of the positioning gear 203, a positioning seat 208 is fixedly provided at one end of one side of the support frame 1, a positioning rod 209 is fixedly provided at the middle position of the positioning seat 208, a return spring 210 is inserted at one end of the outer wall of the positioning rod 209, and the other end of the outer wall of the positioning rod 209 is inserted and connected with one end of one of the positioning racks 205, a first contact sensor 202 is fixedly provided at one end of the inner wall of one of the positioning grooves 201, and a second contact sensor 211 is fixedly provided at the other end of the inner wall of the positioning groove 201;

[0037] The unwinding control mechanism 3 includes a fixed frame 301 fixed on one side of the support frame 1, a fixed groove 302 is opened in the middle position of the fixed frame 301, a positioning screw 303 is rotatably provided in the middle position of the fixed groove 302, one end of the outer wall of the positioning screw 303 is threadedly provided with a moving frame 305, the top of the inner wall of the moving frame 305 is rotatably provided with an unwinding shaft 306, both ends of the outer wall of the unwinding shaft 306 are fixedly provided with protective frames 308, a second motor 304 is fixedly provided on one side of the fixed frame 301, the output end of the second motor 304 is fixedly connected to one end of the positioning screw 303, a third motor 307 is fixedly provided on one side of the moving frame 305, and the output end of the third motor 307 is fixedly connected to one end of the unwinding shaft 306.

[0038] As a specific embodiment of the present invention, the fixed-length control mechanism 4 includes two side positioning plates 401 rotating on one side of the support frame 1, a transmission shaft 405 is fixedly provided at the middle position of the two positioning plates 401, a protective plate 402 is fixedly provided on one side of the two transmission shafts 405, and a plurality of limit shafts 406 are rotatably provided on one side of the two positioning plates 401. One end of the two positioning plates 401 passes through the support frame 1 and is fixedly provided with a driving gear 407, and the tooth surfaces of the two driving gears 407 are meshed with each other.

[0039] A limiting frame 403 is fixedly provided at one end of the other side of the support frame 1 , a fourth motor 404 is fixedly provided at one side of the limiting frame 403 , and an output end of the fourth motor 404 is fixedly connected to the middle position of one of the driving gears 407 .

[0040] An adjusting shaft 6 is rotatably provided at the bottom end of one side of the support frame 1 .

[0041] A pressing shaft 7 is rotatably provided on one side of the support frame 1 close to the adjusting shaft 6 .

[0042] As a specific embodiment of the present invention, both ends of the support frame 1 are connected to a guide mechanism 5, and the guide mechanism 5 includes two guide shafts 501 rotating on one side of the support frame 1. One end of the two guide shafts 501 passes through the support frame 1 and is fixed with a guide gear 502, and the tooth surfaces of the two guide gears 502 are meshed with each other.

[0043] A direction limiting wheel 503 is fixedly provided on one side of one of the guide gears 502, and a direction limiting frame 504 is rotatably provided on the side of the support frame 1 close to the direction limiting wheel 503. A mounting frame 505 is fixedly provided on one end of the support frame 1 close to the direction limiting frame 504. A sliding groove 506 is opened in the middle position of the mounting frame 505, and a fixing rod 507 is slidably provided on the mounting frame 505 through the sliding groove 506. A positioning spring 508 is inserted into one end of the outer wall of the fixing rod 507, one end of the fixing rod 507 is rotatably connected to one side of the direction limiting frame 504, and a fixing block 509 is fixedly provided on the other end of the fixing rod 507.

[0044] As a specific embodiment of the present invention, an intelligent control panel is fixedly provided on one side of the support frame 1, and the first motor 207, the second motor 304, the third motor 307 and the fourth motor 404 are all electrically connected to an external power supply through the intelligent control panel.

[0045] Working principle: When it is necessary to use the fixed-length limit tensioning equipment for industrial chain processing and manufacturing, the industrial chain is unwound through the unwinding shaft 306 and passes through one of the guide mechanisms 5, the tensioning shaft 206 at the upper end, the tensioning shaft 206 at the lower end, the adjusting shaft 6, the pressing shaft 7, another guide mechanism 5 and the fixed-length control mechanism 4 in sequence, and the positioning gear 203 is driven to rotate by the output end of the first motor 207 fixed on one side of the positioning frame 204, so that the positioning gear 203 drives the two positioning racks 205 to engage and move respectively, so that the tensioning shafts 206 rotating on one side of the two positioning racks 205 are centered along the two positioning grooves 201 respectively, so that one end of one of the positioning racks 205 slides along the positioning rod 209 to squeeze the reset spring 210, until one end of the positioning rack 205 contacts the second contact sensor 211, and the fourth motor 404 is controlled to rotate, so that the chain is most tightly transmitted, and the fixed-length limit tensioning chain operation starts;

[0046] The output end of the fourth motor 404 fixed on one side of the limiting frame 403 drives one of the driving gears 407 to rotate, and the two driving gears 407 are meshed, so that the two driving gears 407 respectively drive the two positioning disks 401 to rotate towards each other, so that the transmission shaft 405 fixed at the middle position of the two positioning disks 401 clamps the chain for fixed-length transmission. When the limiting shaft 406 rotating on one side of the positioning disk 401 contacts the chain, the limiting shaft 406 rotates by itself without any limit, so that the chain cannot be effectively transmitted when it contacts the limiting shaft 406, but the chain can be effectively supported to prevent the chain from being unsupported and affecting the length transmission, so that the chain is transmitted at a fixed length every time the driving gear 407 rotates one circle, making the fixed-length transmission of the chain more stable;

[0047] The output end of the second motor 304 fixed on one side of the fixed frame 301 drives the positioning screw 303 to rotate, so that the moving frame 305 threadedly connected to the outer wall of the positioning screw 303 reciprocates along the fixed groove 302, so that when the unwinding shaft 306 passes through the protective unwinding of the protective frame 308, the chain reel unwinds in an orderly manner to avoid the hidden danger of knotting and jamming;

[0048] When a chain of a certain length is limited in length, due to the change in tightness of the chain when unwinding and winding, and the reset elastic potential energy of the reset spring 210 inserted in the outer wall of the positioning rod 209, the two positioning racks 205 respectively drive the two tensioning shafts 206 to slide along the positioning groove 201 through the meshing of the positioning gear 203, so that the tensioning shaft 206 drives the chain to continuously adjust the tension. When the tensioning shaft 206 drives the chain to relax to the end of the positioning groove 201, the device reaches the maximum tensioning operation. At the same time, one end of the positioning rack 205 The first contact sensor 202 is in contact with the first contact sensor 202 fixed at one end of the inner wall of the positioning groove 201, so that the first contact sensor 202 controls the second motor 304 and the third motor 307 to rotate in the opposite direction, so that the unwinding shaft 306 is wound up to a certain length, and at the same time, the positioning rack 205 drives the chain to be initialized and restored through the tensioning shaft 206, and the tensioning adjustment of the reset spring 210, when the end of the positioning rack 205 contacts the second contact sensor 211, the second motor 304 and the third motor 307 rotate normally, so that the chain is continuously tensioned with a fixed length and limit position;

[0049] When the chain passes through the two guide shafts 501 of the guide mechanism 5, the transmission of the chain is protected by the mutual engagement of the guide gears 502 fixed on one side of the guide shafts 501 to avoid the hidden danger of slipping. The guide gear 502 close to the side of the fixed-length control mechanism 4 is limited in direction by the direction limiting wheel 503, and the direction limiting frame 504 rotating on one side of the support frame 1 is squeezed and engaged with one side of the direction limiting wheel 503 by the positioning spring 508 inserted in the outer wall of the fixed rod 507, so that through the control of the direction limiting wheel 503, the guide mechanism 5 close to the side of the fixed-length control mechanism 4 can only drive the chain to be transported to the fixed-length control mechanism 4, and the chain transmitted by the other guide mechanism 5 can move in both directions, so that the chain is protected during unwinding and tensioning, avoiding the reverse rotation of the chain after the fixed-length limit tensioning, and at the same time facilitating the tensioning adjustment of the unprocessed chain to maintain the efficiency of continuous tensioning of the chain.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixed-length limit tensioning device for industrial chain processing and manufacturing, comprising a support frame (1), wherein the support frame (1) is used for supporting and positioning the fixed-length limit tensioning device for industrial chain processing and manufacturing, and is characterized in that: One side of the support frame (1) is connected to a tension control mechanism (2), one end of the support frame (1) is fixedly connected to an unwinding control mechanism (3), and the other side of the top of the support frame (1) is connected to a fixed length control mechanism (4), wherein: The tensioning control mechanism (2) comprises positioning grooves (201) provided at both ends of one side of the support frame (1) and a positioning gear (203) rotatably connected to the middle position of the support frame (1); positioning racks (205) are meshed on both sides of the tooth surface of the positioning gear (203); one end of each of the two positioning racks (205) passes through the positioning groove (201) and is rotatably provided with a tensioning shaft (206); a positioning frame (204) is fixedly provided at the middle position of one side of the support frame (1); a first motor (207) is fixedly provided on one side of the positioning frame (204); an output end of the first motor (207) is connected to the positioning gear (203); and a first motor (207) is fixedly provided on one side of the positioning frame (204); and an output end of the first motor (207) is connected to the positioning gear (203). The middle position of the gear (203) is fixedly connected, a positioning seat (208) is fixedly provided at one end of one side of the support frame (1), a positioning rod (209) is fixedly provided at the middle position of the positioning seat (208), a return spring (210) is inserted through one end of the outer wall of the positioning rod (209), and the other end of the outer wall of the positioning rod (209) is inserted and connected with one end of one of the positioning racks (205), a first contact sensor (202) is fixedly provided at one end of the inner wall of one of the positioning grooves (201), and a second contact sensor (211) is fixedly provided at the other end of the inner wall of the positioning groove (201); The unwinding control mechanism (3) comprises a fixed frame (301) fixed to one side of the support frame (1); a fixed groove (302) is provided in the middle of the fixed frame (301); a positioning screw (303) is rotatably provided in the middle of the fixed groove (302); a moving frame (305) is threadedly provided at one end of the outer wall of the positioning screw (303); an unwinding shaft (306) is rotatably provided at the top end of the inner wall of the moving frame (305); protective frames (308) are fixedly provided at both ends of the outer wall of the unwinding shaft (306); a second motor (304) is fixedly provided on one side of the fixed frame (301); an output end of the second motor (304) is fixedly connected to one end of the positioning screw (303); a third motor (307) is fixedly provided on one side of the moving frame (305); an output end of the third motor (307) is fixedly connected to one end of the unwinding shaft (306).

2. The fixed-length limit tensioning device for industrial chain processing and manufacturing according to claim 1 is characterized in that: The fixed-length control mechanism (4) comprises two side positioning plates (401) rotatable on one side of the support frame (1); a transmission shaft (405) is fixedly provided at the middle position of the two positioning plates (401); a protective plate (402) is fixedly provided on one side of the two transmission shafts (405); a plurality of limit shafts (406) are rotatably provided on one side of the two positioning plates (401); a driving gear (407) is fixedly provided at one end of the two positioning plates (401) through the support frame (1); and the tooth surfaces of the two driving gears (407) are meshed with each other.

3. The fixed-length limit tensioning device for industrial chain processing and manufacturing according to claim 2 is characterized in that: A limiting frame (403) is fixedly provided at one end of the other side of the support frame (1), a fourth motor (404) is fixedly provided at one side of the limiting frame (403), and an output end of the fourth motor (404) is fixedly connected to the middle position of one of the driving gears (407).

4. The fixed-length limit tensioning device for industrial chain processing and manufacturing according to claim 1 is characterized in that: An adjusting shaft (6) is rotatably provided at the bottom end of one side of the support frame (1).

5. The fixed-length limit tensioning device for industrial chain processing and manufacturing according to claim 4 is characterized in that: A pressing shaft (7) is rotatably provided on one side of the support frame (1) close to the adjustment shaft (6).

6. The fixed-length limit tensioning device for industrial chain processing and manufacturing according to claim 1 is characterized in that: Both ends of the support frame (1) are connected to a guide mechanism (5), the guide mechanism (5) comprising two guide shafts (501) rotating on one side of the support frame (1), one end of each of the two guide shafts (501) passing through the support frame (1) and fixedly provided with a guide gear (502), the tooth surfaces of the two guide gears (502) meshing with each other.

7. The fixed-length limit tensioning device for industrial chain processing and manufacturing according to claim 6 is characterized in that: A direction limiting wheel (503) is fixedly provided on one side of one of the guide gears (502); a direction limiting frame (504) is rotatably provided on the side of the support frame (1) close to the direction limiting wheel (503); a mounting frame (505) is fixedly provided on one end of the support frame (1) close to the direction limiting frame (504); a sliding groove (506) is provided in the middle of the mounting frame (505); a fixing rod (507) is slidably provided on the mounting frame (505) through the sliding groove (506); a positioning spring (508) is inserted into one end of the outer wall of the fixing rod (507); one end of the fixing rod (507) is rotatably connected to one side of the direction limiting frame (504); and a fixing block (509) is fixedly provided on the other end of the fixing rod (507).

8. The fixed-length limit tensioning device for industrial chain processing and manufacturing according to claim 3 is characterized in that: An intelligent control panel is fixedly provided on one side of the support frame (1), and the first motor (207), the second motor (304), the third motor (307) and the fourth motor (404) are all electrically connected to an external power supply via the intelligent control panel.

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