Mirror box labeling device
By designing a mirror box labeling device containing multiple components, the problem that round or irregular-shaped mirror boxes cannot be labeled automatically in the prior art is solved, automatic labeling is realized, and production efficiency and standardization of labeling are improved.
Patent Information
- Application Number
- CN202421055363.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The prior art cannot realize the automatic labeling of round or irregular-shaped mirror boxes, resulting in low production efficiency and easy to misalign or misalign labeling.
A mirror box labeling device is designed, including mounting substrate, material discharge assembly, material collection assembly, tension assembly, label stripping assembly, conveying line and limit assembly. Through the mutual cooperation of these components, automatic labeling is achieved.
The automation of mirror box labeling is realized, production efficiency is improved, manual errors are avoided, and the standardization and aesthetics of labeling are ensured.
Smart Images

Figure CN222629784U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cosmetic mirror boxes, in particular to a mirror box labeling device. Background Art
[0002] A makeup mirror box is a box containing a makeup mirror, which has the structural characteristics of being easy to carry, light and small. The makeup mirror box is usually composed of a box body and a box cover. During the production process of the mirror box, a label is affixed to the bottom of the mirror box to explain the product information. In the labeling process of a circular mirror box (or an irregularly shaped mirror box), the existing labeling device cannot automatically label the mirror box because the side of the mirror box is difficult to clamp. Therefore, the labeling of the circular mirror box is usually done manually. The label on the label tape is manually torn off and then attached to the bottom of the mirror box. Manual labeling is not only labor-intensive and inefficient, but also easy to misalign and miss labels, affecting the production efficiency of the entire production line and the appearance of the product. In view of the above defects, it is necessary to design a mirror box labeling device. Utility Model Content
[0003] The purpose of the utility model is to provide a mirror box labeling device to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mirror box labeling device, comprising an installation base, a material discharge assembly, a material receiving assembly, a tensioning assembly, a label stripping assembly, a conveyor line and a limit assembly, wherein the material discharge assembly is installed on the top of the installation base, the material receiving assembly and the tensioning assembly are respectively installed on the two ends of the middle part of the installation base, the label stripping assembly is installed on the bottom of the installation base, a conveyor line is arranged below the installation base, a limit assembly is installed on one side of the conveyor line, and a plurality of material guide rollers are installed on the installation base.
[0005] Preferably, the material discharge assembly comprises a material discharge tray, the material discharge tray is mounted on a material discharge shaft, the material discharge shaft is rotatably arranged on the top of the mounting base plate, and a damper is arranged on the material discharge shaft.
[0006] Preferably, the material receiving assembly includes a material receiving tray, which is mounted on a material receiving shaft, a transmission pulley is mounted at one end of the material receiving shaft, the transmission pulley is connected to a driven pulley through a belt, the driven pulley is mounted on a rotating shaft, a first driven pulley is mounted on the rotating shaft, the first driven pulley is connected to a first driving pulley through a first transmission belt, the first driving pulley is mounted at the output end of a material receiving motor, and the material receiving motor is mounted on a mounting base plate through a motor mounting frame.
[0007] Preferably, a material receiving transition roller is installed on the mounting base plate, a pressure roller is arranged above the material receiving transition roller, a pressure roller is arranged above the pressure roller, the pressure roller is rotatably mounted on the pressure roller mounting seat, two guide rods arranged at intervals are installed on the top of the pressure roller, the top of the guide rod passes through the first support plate and is fixedly connected to the first stop block, a first spring is sleeved on the guide rod, one end of the first spring abuts against the first support plate, and the other end of the first spring abuts against the pressure roller mounting seat, a groove is opened at the lower end of the first support plate, a protrusion is slidably arranged inside the groove, and the protrusion is connected to one end of the pressure roller mounting seat.
[0008] Preferably, the tensioning assembly includes a tensioning block, one end of which is equipped with two spaced-apart connecting rods, a sliding sleeve is sleeved on the connecting rod, the sliding sleeve is mounted on a fixed plate, a second spring is also sleeved on the connecting rod, one end of the second spring abuts against the tensioning block, the other end of the second spring abuts against the fixed plate, and a second stop block is installed on the other end of the connecting rod.
[0009] Preferably, the label stripping assembly includes a label stripping plate, a mounting block is installed above the label stripping plate, a limiting slot is provided at the front end of the mounting block, a swing arm mounting shaft is rotatably arranged inside the limiting slot, a swing arm is installed on the swing arm mounting shaft, a pressing roller is rotatably installed at one end of the swing arm, the middle part of the swing arm is fixedly connected to one end of a third spring, the other end of the third spring is fixedly connected to the limiting slot, a limiting block is installed at one end of the label stripping plate, a sensor bracket is installed at one side of the label stripping plate, a label recognition photoelectric sensor is installed on the sensor bracket, and a transition roller is arranged between the limiting block and the photoelectric sensor.
[0010] Preferably, the conveyor line includes a frame, on both ends of which are rotatably mounted a driving wheel shaft and a transmission wheel shaft, a driving wheel is mounted on the driving wheel shaft, the driving wheel is transmission-connected to the transmission wheel through a conveyor belt, the transmission wheel is mounted on the transmission wheel shaft, a second driven pulley is mounted on one end of the driving wheel shaft, the second driven pulley is transmission-connected to the second driving pulley through a second transmission belt, the second driving pulley is mounted with the output end of a conveying motor, and the conveying motor is mounted at the bottom of the frame.
[0011] Preferably, the limiting assembly includes a second support plate, an upper synchronous belt and a lower synchronous belt, the second support plate is installed on the front end of the frame, a side plate is installed on the second support plate, two upper synchronous wheel axles set at intervals are rotatably installed on the upper end of the side plate, an upper synchronous wheel is installed on the upper synchronous wheel axle, and an upper synchronous belt is wound around the two upper synchronous wheels.
[0012] Preferably, two spaced-apart lower synchronous wheel axles are rotatably mounted on the lower end of the side plate, lower synchronous wheels are mounted on the lower synchronous wheel axles, a lower synchronous belt is wound around the two lower synchronous wheels, a gap is provided between the lower synchronous belt and the upper synchronous belt for the mirror box cover to pass through, and a front guide rod and a rear guide rod are respectively provided at the front and rear ends of the lower synchronous belt.
[0013] Compared with the prior art, the utility model discloses a mirror box labeling device, which is provided with a limiting component. Under the friction force of the upper synchronous belt and the lower synchronous belt, a certain clamping force is exerted on the box cover of the mirror box, which can prevent the mirror box from deflecting during the labeling process and ensure the accuracy of the mirror box labeling. At the same time, the upper synchronous belt, the lower synchronous belt and the conveyor belt cooperate with the pressure roller to label irregular mirror boxes, and the utility model has strong applicability. The utility model replaces manual labor to achieve automation through the mutual cooperation of the material discharge component, the material collection component, the label stripping component, the conveyor line and the limiting component, thereby improving production efficiency, saving personnel costs, avoiding missing labels and wrong labels, and the labels are pasted in standard positions with beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0015] Figure 1 It is a structural schematic diagram of the utility model;
[0016] Figure 2 It is a three-dimensional diagram of the utility model;
[0017] Figure 3 It is a partial structural schematic diagram of the utility model;
[0018] Figure 4 for Figure 1 Schematic diagram of the structure at A in FIG.
[0019] Figure 5 for Figure 1 Schematic diagram of the structure at point B in the figure.
[0020] In the attached figure:
[0021] 1. Install the base plate; 2. Unloading assembly; 201. Unloading tray; 202. Unloading shaft; 3. Receiving assembly; 301. Receiving tray; 302. Receiving shaft; 303. Driving pulley; 304. Belt; 305. Driven pulley; 306. Rotating shaft; 307. First driven pulley; 308. First transmission belt; 309. Receiving motor; 310. Motor mounting frame; 311. Receiving transition roller; 3 12. Pressure roller; 313. Pressure roller; 314. Pressure roller mounting seat; 315. First support plate; 316. First stopper; 317. First spring; 4. Tensioning assembly; 401. Tensioning block; 402. Connecting rod; 403. Sliding sleeve; 404. Fixing plate; 405. Second spring; 406. Second stopper; 5. Label stripping assembly; 501. Label stripping plate; 502. Mounting block; 503. Limiting slot; 504, swing arm mounting shaft; 505, swing arm; 506, press roller; 507, third spring; 508, limit block; 509, sensor bracket; 510, identification photoelectric sensor; 511, transition roller; 6, conveyor line; 601, frame; 602, driving wheel shaft; 603, transmission wheel shaft; 604, driving wheel; 605, conveyor belt; 606, transmission wheel; 607, second driven pulley ; 608, second transmission belt; 609, driving pulley; 610, conveying motor; 7, limit assembly; 701, second support plate; 702, side plate; 703, upper synchronous wheel shaft; 704, upper synchronous wheel; 705, upper synchronous belt; 706, lower synchronous wheel shaft; 707, lower synchronous wheel; 708, lower synchronous belt; 709, front guide rod; 710, rear guide rod; 711, support rod; 8, guide roller. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] See also Figure 1-5 As shown, the utility model provides a technical solution: a mirror box labeling device, comprising an installation base plate 1, a feeding assembly 2, a receiving assembly 3, a tensioning assembly 4, a label stripping assembly 5, a conveyor line 6 and a limiting assembly 7, the feeding assembly 2 is installed on the top of the installation base plate 1, the receiving assembly 3 and the tensioning assembly 4 are respectively installed at both ends of the middle part of the installation base plate 1, the label stripping assembly 5 is installed at the bottom of the installation base plate 1, a conveyor line 6 is arranged below the installation base plate 1, a limiting assembly 7 is installed on one side of the conveyor line 6, and a plurality of material guide rollers 8 are installed on the installation base plate 1.
[0024] The discharge assembly 2 in this embodiment includes a discharge tray 201, on which a label tape is wound, and on which a peelable label is provided. The discharge tray 201 is installed on a discharge shaft 202, and the discharge shaft 202 is rotatably arranged on the top of the mounting substrate 1. A damper is arranged on the discharge shaft 202, and the damper can prevent the discharge tray 201 from rotating too fast, causing the label tape to loosen.
[0025] The receiving assembly 3 in this embodiment includes a receiving tray 301, the receiving tray 301 is mounted on a receiving shaft 302, the receiving shaft 302 is rotatably arranged in the middle of the mounting base plate 1, a driving pulley 303 is mounted on one end of the receiving shaft 302, the driving pulley 303 is connected to a driven pulley 305 through a belt 304, the driven pulley 305 is mounted on a rotating shaft 306, the rotating shaft 306 is rotatably arranged on the mounting base plate 1, a first driven pulley 307 is mounted on the rotating shaft 306, the first driven pulley 307 is connected to a first driving pulley through a first transmission belt 308, the first driving pulley is mounted on the output end of a receiving motor 309, the receiving motor 309 is mounted on the mounting base plate 1 through a motor mounting frame 310, a receiving transition roller 311 is mounted on the mounting base plate 1, and the receiving material is stored in the receiving shaft 301. A pressure roller 312 is arranged above the transition roller 311, and the pressure roller 312 is rotatably mounted on the mounting base plate 1. A pressure roller 313 is arranged above the pressure roller 312, and the pressure roller 313 is rotatably mounted on the pressure roller mounting seat 314. Two guide rods arranged at intervals are arranged on the top of the pressure roller 313, and the tops of the guide rods pass through the first support plate 315 and are fixedly connected with the first stopper 316. The first support plate 315 is an L-shaped structure, and the first support plate 315 is mounted on the mounting base plate 1. A first spring 317 is sleeved on the guide rod, and one end of the first spring 317 abuts against the first support plate 315, and the other end of the first spring 317 abuts against the pressure roller mounting seat 314. A groove is provided at the lower end of the first support plate 315, and a protrusion is slidably arranged inside the groove, and the protrusion is connected to one end of the pressure roller mounting seat 314. When the label tape passes between the pressure roller 312 and the pressure roller 313, the pressure roller mounting base 314 is driven downward by the action of the first spring 317, and the pressure roller 313 also moves downward, pressing the label tape against the roller surface of the pressure roller 312, so that the label tape is wound up by the winding roller in a taut state, which can prevent the label tape from being in a relaxed state before winding up, and solve the problem of the label tape shifting or falling off during winding.
[0026] The tensioning assembly 4 in this embodiment includes a tensioning block 401, one end of which is mounted with two spaced connecting rods 402, a sleeve 403 is sleeved on the connecting rod 402, the sleeve 403 is mounted on a fixing plate 404, the fixing plate 404 is mounted on the mounting base plate 1, a second spring 405 is sleeved on the connecting rod 402, one end of the second spring 405 abuts against the tensioning block 401, the other end of the second spring 405 abuts against the fixing plate 404, and a second stopper 406 is mounted on the other end of the connecting rod 402. Under the action of the second spring 405, the tensioning block 401 is pressed on the label belt, which can ensure the tension of the label belt, so that the label belt will not loosen during the label conveying process.
[0027] The label stripping assembly 5 in this embodiment includes a label stripping plate 501, one end of which forms an acute angle, the label stripping plate 501 is installed at the bottom of the installation substrate 1, a mounting block 502 is installed above the label stripping plate 501, a limiting groove 503 is provided at the front end of the mounting block 502, a swing arm mounting shaft 504 is rotatably arranged inside the limiting groove 503, a swing arm 505 is installed on the swing arm mounting shaft 504, a pressing roller 506 is rotatably installed at one end of the swing arm 505, the middle part of the swing arm 505 is fixedly connected to one end of a third spring 507, the other end of the third spring 507 is fixedly connected to the limiting groove 503, and the label stripping plate 501 is provided with a mounting block 502. A limit block 508 is installed at one end of 501, and an inclined surface is provided at one end of the limit block 508. A sensor bracket 509 is installed on one side of the label stripping plate 501. The sensor bracket 509 is an L-shaped structure. A channel for the label tape to pass through is provided between the sensor bracket 509 and the label stripping plate 501. A label identification photoelectric sensor 510 is installed on the sensor bracket 509. The label identification photoelectric sensor 510 is used to detect the position of the label on the label tape (or detect whether there is a label on the label tape), so as to know the state of the label to prevent the label from being skewed or missing. A transition roller 511 is provided between the limit block 508 and the photoelectric sensor 510.
[0028] The conveyor line 6 in this embodiment includes a frame 601, and a driving wheel shaft 602 and a transmission wheel shaft 603 are rotatably installed at both ends of the frame 601. A driving wheel 604 is installed on the driving wheel shaft 602, and the driving wheel 604 is connected to the transmission wheel 606 through a conveyor belt 605. The transmission wheel 606 is installed on the transmission wheel shaft 603. A second driven pulley 607 is installed at one end of the driving wheel shaft 602, and the second driven pulley 607 is connected to the second driving pulley 609 through a second transmission belt 608. The second driving pulley 609 is installed with the output end of a conveying motor 610, and the conveying motor 610 is installed at the bottom of the frame 601.
[0029] The limiting assembly 7 in this embodiment includes a second support plate 701, an upper synchronous belt 705 and a lower synchronous belt 708. The second support plate 701 is installed at the front end of the frame 601. A side plate 702 is installed on the second support plate 701. Two upper synchronous wheel shafts 703 arranged at intervals are rotatably installed on the upper end of the side plate 702. An upper synchronous wheel 704 is installed on the upper synchronous wheel shaft 703. An upper synchronous belt 705 is wound between the two upper synchronous wheels 704. The lower end of the side plate 702 is rotatably installed. Two lower synchronous wheel shafts 706 are dynamically installed and spaced apart, and a lower synchronous wheel 707 is installed on the lower synchronous wheel shaft 706. A lower synchronous belt 708 is wound around the two lower synchronous wheels 707. A gap is provided between the lower synchronous belt 708 and the upper synchronous belt 705 for the mirror box cover to pass through. A front guide rod 709 and a rear guide rod 710 are respectively provided at the front and rear ends of the lower synchronous belt 708, and the front guide rod 709 and the rear guide rod 710 are respectively installed on the front end of the frame 601 through support rods 711.
[0030] The working principle of the utility model is as follows: the mirror box is opened manually, the box body of the mirror box is buckled on the conveyor belt 605, and the box cover of the mirror box is placed on the front guide rod 709, and the conveying motor 610 works to drive the second active pulley 609, and under the transmission action of the second transmission belt 608, the second driven pulley 607 and the active wheel shaft 602 are driven to rotate, thereby driving the conveyor belt 605 to move, and the mirror box moves with the conveyor belt 605, and the box cover of the mirror box passes the end of the front guide rod 709 and enters the gap between the upper synchronous belt 705 and the lower synchronous belt 708. Under the friction force of the upper synchronous belt 705 and the lower synchronous belt 708, a certain clamping force is exerted on the box cover of the mirror box, which can prevent the mirror box from deflecting during the labeling process, thereby ensuring the accuracy of the mirror box labeling. When the conveyor belt 605 conveys the mirror box to the bottom of the pressing roller 506, the label belt on the discharge tray 201 passes through multiple guide rollers 8, the tensioning block 401 and the transition roller 511 in sequence, and then The label and the label tape are separated by the label peeling plate 501, and the label is placed under the pressure roller 506, and the tape passes through the guide roller 8, the pressure roller 312 and the material collection transition roller 311 in sequence and is wound on the material collection tray 301. Under the action of the third spring 507, the swing arm 505 is driven to move downward, and the pressure roller 506 also moves downward to press the label on the mirror box. The conveyor line 6 conveys the mirror box, so that the pressure roller 506 rolls on the label to stick the label on the mirror box, thereby realizing the sticking function. At the same time, the material collection motor 309 drives the first active pulley to rotate, and drives the first driven pulley 307 to rotate under the action of the first transmission belt 308, and the rotating shaft 306 and the driven pulley 305 also rotate. The driven pulley 305 drives the driving pulley 303 to rotate through the belt 304, and the material collection shaft 302 also rotates, thereby driving the material collection tray 301 to rotate and collect the tape, thereby realizing the collection of the label tape.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A mirror box labeling device, characterized in that: The invention comprises an installation base plate (1), a material discharge component (2), a material receiving component (3), a tensioning component (4), a label stripping component (5), a conveying line (6) and a limiting component (7); the material discharge component (2) is installed on the top of the installation base plate (1); the material receiving component (3) and the tensioning component (4) are installed at both ends of the middle of the installation base plate (1); the label stripping component (5) is installed at the bottom of the installation base plate (1); a conveying line (6) is arranged below the installation base plate (1); a limiting component (7) is installed on one side of the conveying line (6); and a plurality of material guide rollers (8) are installed on the installation base plate (1).
2. A mirror box labeling device according to claim 1, characterized in that: The material discharge assembly (2) comprises a material discharge tray (201), the material discharge tray (201) is mounted on a material discharge shaft (202), the material discharge shaft (202) is rotatably mounted on the top of the mounting base plate (1), and a damper is arranged on the material discharge shaft (202).
3. The mirror box labeling device according to claim 1, characterized in that: The material receiving assembly (3) comprises a material receiving tray (301), wherein the material receiving tray (301) is mounted on a material receiving shaft (302), a driving pulley (303) is mounted on one end of the material receiving shaft (302), the driving pulley (303) is connected to a driven pulley (305) through a belt (304), the driven pulley (305) is mounted on a rotating shaft (306), a first driven pulley (307) is mounted on the rotating shaft (306), the first driven pulley (307) is connected to a first driving pulley through a first transmission belt (308), the first driving pulley is mounted on the output end of a material receiving motor (309), and the material receiving motor (309) is mounted on a mounting base plate (1) through a motor mounting frame (310).
4. A mirror box labeling device according to claim 3, characterized in that: A material receiving transition roller (311) is mounted on the mounting base plate (1), a pressure roller (312) is arranged above the material receiving transition roller (311), a pressure roller (313) is arranged above the pressure roller (312), the pressure roller (313) is rotatably mounted on the pressure roller mounting seat (314), two guide rods arranged at intervals are mounted on the top of the pressure roller (313), the top of the guide rod passes through a first support plate (315) and is fixedly connected to a first stopper (316), a first spring (317) is sleeved on the guide rod, one end of the first spring (317) abuts against the first support plate (315), and the other end of the first spring (317) abuts against the pressure roller mounting seat (314), a groove is provided at the lower end of the first support plate (315), a convex block is slidably arranged inside the groove, and the convex block is connected to one end of the pressure roller mounting seat (314).
5. The mirror box labeling device according to claim 1, characterized in that: The tensioning assembly (4) comprises a tensioning block (401), one end of which is mounted with two spaced connecting rods (402), a sliding sleeve (403) being sleeved on the connecting rod (402), the sliding sleeve (403) being mounted on a fixed plate (404), a second spring (405) being sleeved on the connecting rod (402), one end of the second spring (405) being in contact with the tensioning block (401), the other end of the second spring (405) being in contact with the fixed plate (404), and a second stopper (406) being mounted on the other end of the connecting rod (402).
6. The eyeglass box labeling device according to claim 1, characterized in that: The label stripping assembly (5) comprises a label stripping plate (501), a mounting block (502) is mounted above the label stripping plate (501), a limiting groove (503) is provided at the front end of the mounting block (502), a swing arm mounting shaft (504) is rotatably arranged inside the limiting groove (503), a swing arm (505) is mounted on the swing arm mounting shaft (504), a pressing roller (506) is rotatably mounted at one end of the swing arm (505), and the middle part of the swing arm (505) is connected to the first One end of the three springs (507) is fixedly connected, the other end of the third spring (507) is fixedly connected to the limiting groove (503), one end of the label peeling plate (501) is installed with a limiting block (508), one side of the label peeling plate (501) is installed with a sensor bracket (509), a label recognition photoelectric sensor (510) is installed on the sensor bracket (509), and a transition roller (511) is arranged between the limiting block (508) and the photoelectric sensor (510).
7. The eyeglass box labeling device according to claim 1, characterized in that: The conveyor line (6) comprises a frame (601), and a driving wheel shaft (602) and a transmission wheel shaft (603) are rotatably mounted on both ends of the frame (601), a driving wheel (604) is mounted on the driving wheel shaft (602), the driving wheel (604) is connected to the transmission wheel (606) through a conveyor belt (605), the transmission wheel (606) is mounted on the transmission wheel shaft (603), a second driven pulley (607) is mounted on one end of the driving wheel shaft (602), the second driven pulley (607) is connected to the second driving pulley (609) through a second transmission belt (608), the second driving pulley (609) is mounted with the output end of a conveying motor (610), and the conveying motor (610) is mounted at the bottom of the frame (601).
8. The mirror box labeling device according to claim 1, characterized in that: The limiting assembly (7) comprises a second support plate (701), an upper synchronous belt (705) and a lower synchronous belt (708); the second support plate (701) is mounted at the front end of the frame (601); a side plate (702) is mounted on the second support plate (701); two upper synchronous wheel shafts (703) arranged at intervals are rotatably mounted on the upper end of the side plate (702); an upper synchronous wheel (704) is mounted on the upper synchronous wheel shaft (703); and an upper synchronous belt (705) is wound between the two upper synchronous wheels (704).
9. A mirror box labeling device according to claim 8, characterized in that: Two lower synchronous wheel shafts (706) arranged at intervals are rotatably mounted on the lower end of the side plate (702), and a lower synchronous wheel (707) is mounted on the lower synchronous wheel shaft (706). A lower synchronous belt (708) is wound between the two lower synchronous wheels (707), and a gap is provided between the lower synchronous belt (708) and the upper synchronous belt (705) for the mirror box cover to pass through. A front guide rod (709) and a rear guide rod (710) are respectively provided at the front and rear ends of the lower synchronous belt (708).