Cloth-based adhesive tape splitting machine
By introducing multi-angle adjustable cutters and adaptive fixing devices into the cloth-based tape slitting machine, the problems of inflexible tape fixing and complex equipment in the existing technology are solved, and precise cutting of tapes of different specifications and simplification of equipment are achieved.
Patent Information
- Application Number
- CN202511104915.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2025-10-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing cloth-based tape slitting machines cannot adaptively fix tapes of different sizes, resulting in the need to replace fixing rods of different diameters, causing cutting errors and complex equipment structure, and a single usage scenario.
The cutting device and the rotating fixing device are adopted, including the multi-angle adjustment tool and the adaptive fixing device. The multi-angle adjustment and adaptive fixing are realized through the cooperation of the driving motor and the servo motor, thereby simplifying the equipment structure.
It realizes adaptive fixation of tapes of different specifications, reduces cutting errors, simplifies the equipment structure, and expands the application scenarios.
Smart Images

Figure CN120736337A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of cloth-based adhesive tape slitting, in particular to a cloth-based adhesive tape slitting machine. Background Art
[0002] When adhesive tape is used to secure objects, due to the different sizes of the objects, different specifications of tape need to be produced to accommodate objects of different sizes. When producing tapes of different sizes, a tape slitting machine is used. A tape slitting machine is a device that cuts a very wide tape into narrower ones.
[0003] The existing cloth-based tape slitting has the following disadvantages: 1. It is unable to adaptively fix tapes of different sizes, resulting in different diameter fixing rods required for tapes of different specifications. As a result, workers need to replace fixing rods of different diameters every time they cut tapes of different specifications. The tape is deformed during cutting, resulting in cutting errors.
[0004] 2. The existing tape slitting machine has a complex structure, which occupies a large space and results in a single usage scenario for the existing tape slitting machine.
[0005] Therefore, we make improvements to this and propose a cloth-based tape slitting machine. Summary of the Invention
[0006] In order to make up for the shortcomings of the existing technology and solve the problem of being unable to adaptively fix tapes of different sizes, tapes of different specifications require fixing rods of different diameters, so that workers need to replace fixing rods of different diameters every time they cut tapes of different specifications. The tape is deformed when the tool is cutting, causing cutting errors. The existing tape slitting machine has a complex structure, occupies a large space, and has a single usage scenario.
[0007] The technical solution adopted by the present invention to solve the technical problem is: providing a cloth-based tape slitting machine, comprising: a cutting device and a rotating fixing device; The cutting device comprises a fixed plate, and a multi-angle adjustable cutter is provided on the top of the outer surface of the fixed plate; The rotating fixing device includes a drive motor, which is located on the side of the fixing plate away from the multi-angle adjustment tool. An adaptive fixing device is provided at the bottom of the multi-angle adjustment tool. The output shaft of the drive motor passes through the outer wall of the fixing plate and is transmission-connected to the adaptive fixing device.
[0008] Furthermore, the multi-angle adjustment tool includes a fixed seat, which is fixedly connected to the fixed plate. The outer surface of the fixed seat is hinged with two first connecting rods, the side of the first connecting rod away from the fixed seat is hinged with a second connecting rod, and the side of the second connecting rod away from the first connecting rod is provided with a first fixed block.
[0009] During operation, two first connecting rods are hingedly provided on the outer surface of the fixing seat so that the first connecting rods can swing on the fixing seat. A second connecting rod is hingedly provided on one side of the first connecting rod away from the fixing seat so that the second connecting rod can swing on the first connecting rod.
[0010] Furthermore, grooves are provided at the top and bottom of the second connecting rod on the side close to the first fixed block, and the end of the second connecting rod away from the first connecting rod is hinged to the groove. Two servo motors are provided on the side of the fixed seat away from the first connecting rod, and the fixed ends of the servo motors are fixedly connected to the fixed seat. The output shaft of the servo motor passes through the outer wall of the fixed seat and is transmission-connected to the first connecting rod, and a blade is fixedly provided at the bottom of the first fixed block.
[0011] During operation, the second connecting rod is hinged to the groove at one end away from the first connecting rod so that the second connecting rod can swing in the groove. The output shaft of the servo motor passes through the outer wall of the fixing seat and is transmission-connected to the first connecting rod so that the rotation of the servo motor can drive the first connecting rod to swing.
[0012] The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame. The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame.
[0013] During operation, one end of the fourth connecting rod is hinged to the fixed plate, so that the fourth connecting rod can swing on the fixed plate. A fifth connecting rod is provided through the center hinge of the fourth connecting rod, so that the fifth connecting rod can swing on the fourth connecting rod. A second fixed block is hinged on the side of the fourth connecting rod away from the fixed plate, so that the fourth connecting rod can swing on the second fixed block. The end of the fourth connecting rod away from the fixed plate is slidably connected to the sliding groove of the third fixed block through a sliding pin, so that the end of the fourth connecting rod away from the fixed plate can slide on the third fixed block. The end of the fifth connecting rod close to the fixed plate is slidably connected to the sliding groove of the fourth fixed block through a sliding pin, so that the end of the fifth connecting rod close to the fixed plate can slide in the sliding groove on the fourth fixed block. The slider on the first fixed block is slidably connected to the sliding groove on the second fixed block, so that the slider on the first fixed block can slide in the sliding groove on the second fixed block.
[0014] Furthermore, the adaptive fixing device includes a rotating table, which is located on the side of the fixed plate away from the drive motor, the fixed end of the drive motor is fixedly connected to the fixed plate, the output shaft of the drive motor passes through the fixed plate and is transmission-connected to the rotating table, a turntable is provided in the inner cavity of the rotating table for rotation, a plurality of third connecting rods are hingedly provided around the turntable, a slider is hingedly provided at one end of the third connecting rod away from the turntable, and a plurality of penetrating sliding grooves are provided at equal angles on the outer surface of the rotating table.
[0015] During operation, the output shaft of the drive motor passes through the fixed plate and is in transmission connection with the turntable, allowing rotation of the drive motor to drive the turntable. Several third connecting rods are hingedly mounted around the turntable, allowing them to swing on the turntable. A slider is hingedly mounted on the end of the third connecting rod away from the turntable, allowing the third connecting rod to swing on the slider.
[0016] Furthermore, the slider is slidably connected to the slide groove, a positioning column is fixedly provided on the side of the slide groove away from the third connecting rod, a motor cabin is fixedly provided at the center of the outer surface of the turntable, a stepper motor is provided inside the motor cabin, the fixed end of the stepper motor is fixedly connected to the turntable, the output shaft of the stepper motor passes through the outer wall of the turntable and is transmission-connected to the turntable, a penetrating heat dissipation grille is provided on the side of the motor cabin away from the turntable, a connecting plate is fixedly provided at the bottom of the fixed plate, and a reinforcing plate is fixedly provided on the top of the connecting plate.
[0017] During operation, the slider is slidably connected to the chute, allowing the slider to slide within the chute. The output shaft of the stepper motor penetrates the outer wall of the turntable and is in transmission connection with the turntable, so that the rotation of the stepper motor can drive the turntable. The provision of a reinforcement plate makes the fixed plate more stable.
[0018] The specific beneficial effects are as follows: 1. The cloth-based tape slitting machine described in the present invention has a multi-angle adjustable tool set inside the cutting device, so that the multi-angle adjustable tool can control the size of the tape cut.
[0019] 2. The cloth-based tape slitting machine described in the present invention starts the driving motor inside the rotating fixing device, so that the driving motor rotates and drives the adaptive fixing device to rotate. Through the setting of the adaptive fixing device, the adaptive fixing device can fix tapes of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present invention will be further described below with reference to the accompanying drawings.
[0021] Figure 1 is a perspective view of the present invention; Figure 2 is a perspective view of the present invention; Figure 3 It is a partial perspective cutaway view of the present invention; Figure 4 It is a partial perspective view of the present invention; Figure 5 It is a partial perspective view of the present invention.
[0022] In the figure: 10, cutting device; 1001, fixing plate; 1002, connecting plate; 1003, reinforcing plate; 110, multi-angle adjustment tool; 1101, fixing seat; 1102, servo motor; 1103, first connecting rod; 1104, second connecting rod; 1105, first fixing block; 1106, blade; 1107, second fixing block; 1108, fourth connecting rod; 1109, fifth connecting rod; 1110, third fixing block; 1111, fourth fixing block; 20, rotating fixing device; 2001, driving motor; 210, adaptive fixing device; 2101, rotating table; 2102, turntable; 2103, third connecting rod; 2104, slider; 2105, stepping motor; 2106, motor compartment; 2107, positioning column; 2108, slide groove; 2109, heat dissipation grid. DETAILED DESCRIPTION
[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0024] like Figures 1 to 5 As shown, the present invention provides a cloth-based tape slitting machine, comprising: a cutting device 10 and a rotating fixing device 20; The cutting device 10 includes a fixed plate 1001 , and a multi-angle adjustable cutter 110 is provided on the top of the outer surface of the fixed plate 1001 ; The rotating fixing device 20 includes a drive motor 2001, which is located on the side of the fixing plate 1001 away from the multi-angle adjustment tool 110. An adaptive fixing device 210 is provided at the bottom of the multi-angle adjustment tool 110. The output shaft of the drive motor 2001 passes through the outer wall of the fixing plate 1001 and is transmission-connected to the adaptive fixing device 210.
[0025] As a specific embodiment of the present invention, the multi-angle adjustment tool 110 includes a fixed seat 1101, which is fixedly connected to the fixed plate 1001. The outer surface of the fixed seat 1101 is hingedly provided with two first connecting rods 1103. The side of the first connecting rod 1103 away from the fixed seat 1101 is hingedly provided with a second connecting rod 1104. The side of the second connecting rod 1104 away from the first connecting rod 1103 is provided with a first fixed block 1105.
[0026] During operation, two first connecting rods 1103 are hingedly provided on the outer surface of the fixing base 1101, so that the first connecting rods 1103 can swing on the fixing base 1101. A second connecting rod 1104 is hingedly provided on one side of the first connecting rod 1103 away from the fixing base 1101, so that the second connecting rod 1104 can swing on the first connecting rod 1103.
[0027] As a specific embodiment of the present invention, the top and bottom of the second connecting rod 1104 on the side close to the first fixed block 1105 are provided with grooves, and the end of the second connecting rod 1104 away from the first connecting rod 1103 is hinged to the groove, and two servo motors 1102 are provided on the side of the fixed seat 1101 away from the first connecting rod 1103, and the fixed end of the servo motor 1102 is fixedly connected to the fixed seat 1101, and the output shaft of the servo motor 1102 passes through the outer wall of the fixed seat 1101 and is transmission-connected to the first connecting rod 1103, and a blade 1106 is fixedly provided at the bottom of the first fixed block 1105.
[0028] During operation, the second connecting rod 1104 is hinged to the groove at one end away from the first connecting rod 1103, allowing the second connecting rod 1104 to swing within the groove. The output shaft of the servo motor 1102 passes through the outer wall of the fixing base 1101 and is in transmission connection with the first connecting rod 1103, so that the rotation of the servo motor 1102 can drive the first connecting rod 1103 to swing.
[0029] As a specific embodiment of the present invention, a fourth connecting rod 1108 is provided on the side of the fixed seat 1101 away from the servo motor 1102, one end of the fourth connecting rod 1108 is hinged to the fixed plate 1001, and a fifth connecting rod 1109 is hinged at the center of the fourth connecting rod 1108. A second fixed block 1107 is hinged on the side of the fourth connecting rod 1108 away from the fixed plate 1001, and a third fixed block 1110 is provided on the side of the second fixed block 1107 close to the fourth connecting rod 1108. A through-slot 2108 is provided on the outer surface of the third fixed block 1110, and the end of the fourth connecting rod 1108 away from the fixed plate 1001 is connected to the third fixed block 1110 through a sliding pin. The sliding groove 2108 is slidably connected, the fixed plate 1001 is provided with a fourth fixed block 1111 on the side close to the fifth connecting rod 1109, and the outer surface of the fourth fixed block 1111 is provided with a penetrating sliding groove 2108, and the end of the fifth connecting rod 1109 close to the fixed plate 1001 is slidably connected to the sliding groove 2108 of the fourth fixed block 1111 through a sliding pin, the second fixed block 1107 is provided with a sliding groove 2108 on the side close to the first fixed block 1105, and the first fixed block 1105 is fixed with a slider 2104 on the side close to the second fixed block 1107, and the slider 2104 on the first fixed block 1105 is slidably connected to the sliding groove 2108 on the second fixed block 1107.
[0030] During operation, one end of the fourth connecting rod 1108 is hinged to the fixed plate 1001, allowing the fourth connecting rod 1108 to swing on the fixed plate 1001. A fifth connecting rod 1109 is hingedly provided at the center of the fourth connecting rod 1108, allowing the fifth connecting rod 1109 to swing on the fourth connecting rod 1108. A second fixing block 1107 is hingedly provided on the side of the fourth connecting rod 1108 away from the fixed plate 1001, allowing the fourth connecting rod 1108 to swing on the second fixing block 1107. The end of the fourth connecting rod 1108 away from the fixed plate 1001 is slidably connected to the slide slot 2108 of the third fixing block 1110 via a sliding pin, allowing the end of the fourth connecting rod 1108 away from the fixed plate 1001 to slide on the third fixing block 1110. The end of the fifth connecting rod 1109 near the fixed plate 1001 is slidably connected to the sliding groove 2108 of the fourth fixed block 1111 via a sliding pin, so that the end of the fifth connecting rod 1109 near the fixed plate 1001 can slide in the sliding groove 2108 on the fourth fixed block 1111. The slider 2104 on the first fixed block 1105 is slidably connected to the sliding groove 2108 on the second fixed block 1107, so that the slider 2104 on the first fixed block 1105 can slide in the sliding groove 2108 on the second fixed block 1107.
[0031] As a specific embodiment of the present invention, the adaptive fixing device 210 includes a rotating table 2101, which is located on the side of the fixed plate 1001 away from the drive motor 2001. The fixed end of the drive motor 2001 is fixedly connected to the fixed plate 1001, and the output shaft of the drive motor 2001 passes through the fixed plate 1001 and is transmission-connected to the rotating table 2101. A turntable 2102 is provided in the inner cavity of the rotating table 2101 for rotation, and a plurality of third connecting rods 2103 are hingedly provided around the turntable 2102. A slider 2104 is hingedly provided at one end of the third connecting rod 2103 away from the turntable 2102, and a plurality of penetrating slide grooves 2108 are provided at equal angles on the outer surface of the rotating table 2101.
[0032] During operation, the output shaft of the drive motor 2001 passes through the fixed plate 1001 and is in transmission connection with the rotating platform 2101. Rotation of the drive motor 2001 drives the rotating platform 2101. A plurality of third connecting rods 2103 are hingedly provided around the periphery of the rotating disk 2102, allowing the third connecting rods 2103 to swing on the rotating disk 2102. A slider 2104 is hingedly provided at one end of the third connecting rod 2103, away from the rotating disk 2102, allowing the third connecting rod 2103 to swing on the slider 2104.
[0033] As a specific embodiment of the present invention, the slider 2104 is slidingly connected to the slide groove 2108, and a positioning column 2107 is fixedly provided on the side of the slide groove 2108 away from the third connecting rod 2103. A motor cabin 2106 is fixedly provided at the center of the outer surface of the rotating table 2101, and a stepper motor 2105 is provided inside the motor cabin 2106. The fixed end of the stepper motor 2105 is fixedly connected to the rotating table 2101, and the output shaft of the stepper motor 2105 passes through the outer wall of the rotating table 2101 and is transmission-connected to the turntable 2102. A penetrating heat dissipation grille 2109 is provided on the side of the motor cabin 2106 away from the rotating table 2101, and a connecting plate 1002 is fixedly provided at the bottom of the fixed plate 1001, and a reinforcing plate 1003 is fixedly provided on the top of the connecting plate 1002.
[0034] During operation, the slider 2104 is slidably connected to the chute 2108, allowing the slider 2104 to slide within the chute 2108. The output shaft of the stepper motor 2105 penetrates the outer wall of the rotating platform 2101 and is in transmission connection with the turntable 2102, so that the rotation of the stepper motor 2105 drives the turntable 2102. The provision of the reinforcement plate 1003 further stabilizes the fixed plate 1001.
[0035] The specific workflow is as follows: First, the stepper motor 2105 is started. The stepper motor 2105 rotates and drives the turntable 2102 to rotate. The rotation of the turntable 2102 drives the third connecting rod 2103 to swing. The swinging of the third connecting rod 2103 drives the slider 2104 to move. The movement of the slider 2104 drives the positioning posts 2107 to move. Thus, by controlling the stepper motor 2105, the positioning posts 2107 can be moved away from or closer to each other, so that the adaptive fixing device 210 can adaptively fix the tape. After the tape is fixed, the drive motor 2001 is started. The drive motor 2001 rotates and drives the multi-angle adjustment tool 110 and the tape to rotate. Then, the two servo motors 1102 are started. When the two servo motors 1102 rotate in the same direction, the servo motors 1102 can drive the first connecting rod 1103, the second connecting rod 1104, the first fixing block 1105, and the blade 1106 to rotate in the direction of the motor rotation, thereby changing the tool to cut tapes of different specifications. When the two servo motors 1102 rotate in opposite directions, the two first connecting rods 1103 will swing in opposite directions, so that the two first connecting rods 1103 drive the two second connecting rods 1104 to swing in opposite directions, so that the first connecting rod 1103 and the second connecting rod 1104 drive the first fixed block 1105 to approach the fixed seat 1101 or move away from the fixed seat 1101, thereby changing the position of the blade 1106 to change the width of the tape cutting. The depth and width of the tape cut can be controlled by controlling the two servo motors 1102. When the first fixed block 1105 approaches or moves away from the fixed base 1101, the movement of the first fixed block 1105 drives the movement of the second fixed block 1107, which in turn drives the fourth connecting rod 1108 and the fifth connecting rod 1109 to swing. The arrangement of the fourth connecting rod 1108 and the fifth connecting rod 1109 allows the second fixed block 1107 to remain vertical during movement. The sliding block 2104 on the first fixed block 1105 is slidably connected to the sliding groove 2108 on the second fixed block 1107, allowing the first fixed block 1105 to remain vertical during swinging. When the device is not in use, the first connecting rod 1103 and the second connecting rod 1104 can be folded together by controlling the servo motor 1102 to save space.
[0036] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.
[0037] In the description of the present invention, it should be understood that the terms "middle", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.
[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A cloth-based tape slitting machine, characterized in that: include: Cutting device (10) and rotating fixing device (20); The cutting device (10) comprises a fixed plate (1001), and a multi-angle adjustable cutter (110) is provided on the top of the outer surface of the fixed plate (1001); The rotating fixing device (20) comprises a driving motor (2001), the driving motor (2001) being located on a side of the fixing plate (1001) away from the multi-angle adjustment tool (110), an adaptive fixing device (210) being provided at the bottom of the multi-angle adjustment tool (110), and an output shaft of the driving motor (2001) passing through the outer wall of the fixing plate (1001) and being in transmission connection with the adaptive fixing device (210).
2. The cloth-based tape slitting machine according to claim 1, characterized in that: The multi-angle adjustment tool (110) comprises a fixed seat (1101), the fixed seat (1101) is fixedly connected to the fixed plate (1001), the outer surface of the fixed seat (1101) is hingedly provided with two first connecting rods (1103), a second connecting rod (1104) is hingedly provided on a side of the first connecting rod (1103) away from the fixed seat (1101), and a first fixing block (1105) is provided on a side of the second connecting rod (1104) away from the first connecting rod (1103).
3. The cloth-based tape slitting machine according to claim 2, characterized in that: The first fixed block (1105) is provided with grooves at the top and bottom of a side close to the second connecting rod (1104); an end of the second connecting rod (1104) away from the first connecting rod (1103) is hinged to the groove of the first fixed block (1105); two servo motors (1102) are provided on a side of the fixed seat (1101) away from the first connecting rod (1103); the fixed ends of the servo motors (1102) are fixedly connected to the fixed seat (1101); the output shaft of the servo motor (1102) passes through the outer wall of the fixed seat (1101) and is transmission-connected to the first connecting rod (1103); and a blade (1106) is fixedly provided at the bottom of the first fixed block (1105).
4. The cloth-based tape slitting machine according to claim 3, characterized in that: A fourth connecting rod (1108) is provided on the side of the fixed seat (1101) away from the servo motor (1102), one end of the fourth connecting rod (1108) is hinged to the fixed plate (1001), a fifth connecting rod (1109) is hinged at the center of the fourth connecting rod (1108), a second fixed block (1107) is hinged on the side of the fourth connecting rod (1108) away from the fixed plate (1001), a third fixed block (1110) is provided on the side of the second fixed block (1107) close to the fourth connecting rod (1108), a through-slot (2108) is provided on the outer surface of the third fixed block (1110), and the end of the fourth connecting rod (1108) away from the fixed plate (1001) is slidably connected to the slot (2108) of the third fixed block (1110) through a sliding pin. The fixed plate (1001) is provided with a fourth fixed block (1111) on a side close to the fifth connecting rod (1109); the outer surface of the fourth fixed block (1111) is provided with a through sliding groove (2108); one end of the fifth connecting rod (1109) close to the fixed plate (1001) is slidably connected to the sliding groove (2108) of the fourth fixed block (1111) through a sliding pin; the second fixed block (1107) is provided with a sliding groove (2108) on a side close to the first fixed block (1105); the first fixed block (1105) is fixed with a slider (2104) on a side close to the second fixed block (1107); the slider (2104) on the first fixed block (1105) is slidably connected to the sliding groove (2108) on the second fixed block (1107).
5. The cloth-based tape slitting machine according to claim 4, characterized in that: The adaptive fixing device (210) includes a rotating table (2101), the rotating table (2101) is located on a side of the fixed plate (1001) away from the driving motor (2001), the fixed end of the driving motor (2001) is fixedly connected to the fixed plate (1001), the output shaft of the driving motor (2001) passes through the fixed plate (1001) and is transmission-connected to the rotating table (2101), a rotating turntable (2102) is provided in the inner cavity of the rotating table (2101), a plurality of third connecting rods (2103) are hingedly provided around the rotating table (2102), a slider (2104) is hingedly provided at one end of the third connecting rod (2103) away from the rotating table (2102), and a plurality of penetrating sliding grooves (2108) are provided at equal angles on the outer surface of the rotating table (2101).
6. The cloth-based tape slitting machine according to claim 5, characterized in that: The slider (2104) is slidably connected to the slide groove (2108); a positioning column (2107) is fixedly provided on the side of the slide groove (2108) away from the third connecting rod (2103); a motor cabin (2106) is fixedly provided at the center of the outer surface of the rotating table (2101); a stepper motor (2105) is provided inside the motor cabin (2106); a fixed end of the stepper motor (2105) is fixedly connected to the rotating table (2101); an output shaft of the stepper motor (2105) passes through the outer wall of the rotating table (2101) and is transmission-connected to the turntable (2102); a penetrating heat dissipation grille (2109) is provided on the side of the motor cabin (2106) away from the rotating table (2101); a connecting plate (1002) is fixedly provided at the bottom of the fixing plate (1001); and a reinforcing plate (1003) is fixedly provided on the top of the connecting plate (1002).