Mechanical arm mechanism capable of being efficiently disassembled and assembled on sewing equipment

Abstract

The utility model discloses a mechanical arm mechanism capable of being efficiently disassembled and assembled on sewing equipment, and belongs to the technical field of sewing equipment such as pocket patching machines. The problem of how to improve the disassembly and assembly efficiency of the mechanical arm mechanism is solved. According to the key points of the technical scheme, the mechanical arm comprises a folding mechanical arm body and a material taking and seam feeding mechanical arm body, the folding mechanical arm body and the material taking and seam feeding mechanical arm body each comprise a plurality of air cylinders, a plurality of sensors and a mounting base, each air cylinder is connected to the mounting base through a hose, and each sensor is connected to the mounting base through a wire; the mounting base is provided with a gas circuit integrated connecting base and a circuit integrated connecting base. The gas circuit integrated connecting device has the effect of being efficient and convenient to disassemble and assemble.

Description

Technical Field

[0001] This application relates to the technical field of sewing equipment such as patching machines, and in particular to a highly efficient assembly and disassembly robotic arm mechanism for sewing equipment. Background Technology

[0002] Currently, patent application number CN201921059082.1 describes a technical solution for a patching machine. This indicates that patching machines, as sewing equipment, involve various robotic arm mechanisms, such as folding robotic arms in pocket fabric folding mechanisms and fabric pressing and feeding robotic arms in fabric pressing and moving mechanisms. These robotic arms, with their different functions, are equipped with small pneumatic components, such as small cylinders, which achieve their actions by connecting to an air source (air pump). To ensure accurate and reliable operation, the cylinders are equipped with stroke sensors (limit switches). These stroke sensors are used to provide feedback electrical signals, which are transmitted through wires. Thus, these devices involve wires for transmitting electrical signals and air pipes for controlling the cylinder movement. To facilitate mold interchangeability, different sewing requirements necessitate the adaptation of different robotic arm molds. Therefore, it is necessary to quickly assemble and interchange different robotic arm heads, which requires consideration of these structures. If the cylinders are directly connected to the air pump via hoses and the sensors are directly connected to the controller via wires, the wiring and piping will be very messy and inconvenient for disassembly and assembly. This is because disassembly and assembly also involves interference issues with the mechanical structure. Therefore, the spatial position of the mechanical structure must be fully considered.

[0003] The technical problem that needs to be solved is: how to improve the assembly and disassembly efficiency of this robotic arm mechanism. Utility Model Content

[0004] In view of the shortcomings (problems) of the prior art described above, in order to enable efficient and convenient assembly and disassembly of the robotic arm mechanism, this application provides an efficient assembly and disassembly robotic arm mechanism for sewing equipment.

[0005] To achieve the above and other related objectives, this application adopts the following technical solution: a highly efficient disassembly and assembly robotic arm mechanism for sewing equipment, comprising a folding robotic arm and a material picking and feeding sewing robotic arm. Both the folding robotic arm and the material picking and feeding sewing robotic arm include multiple cylinders, multiple sensors, and a mounting base. Each cylinder is connected to the mounting base via a hose, and each sensor is connected to the mounting base via a wire. The mounting base is provided with an integrated air circuit connector and an integrated circuit connector.

[0006] Optionally, the folding robotic arm further includes a bracket, a boom, a circuit integrated plug, and a plug socket. The inner side of the bracket is fixed with a circuit integrated connector, and the outer side of the bracket is fixed with a pneumatic integrated connector. The mounting base is provided with a fixing position for fixing the bracket, a plug socket for docking with the circuit integrated connector, and an air passage for docking with the pneumatic integrated connector. A model plate is fixedly connected to the front end of the boom, and a cylinder is fixedly connected to the edge of the model plate. The cylinder is a fabric folding cylinder, and a fabric folding cylinder is also fixedly installed on the bottom surface of the mounting base.

[0007] Optionally, the folding cylinder includes an air pipe interface, a sensor slot, a cylinder body, a telescopic rod, an adjusting seat, and a folding plate. The air pipe interface is located on the side of the cylinder body, the sensor slot is located on the top of the cylinder body, the adjusting seat is fixed to the end of the telescopic rod, and the folding plate is fastened to the adjusting groove of the adjusting seat.

[0008] Optionally, the mounting base is provided with a through hole, and the boom is provided with a long groove. Bolts are installed in the long groove of the boom to adjust its fixed position on the mounting base. An adapter is also fixed on the boom. The adapter allows the sensor wires to be transferred through a connector. The mounting base is provided with an air passage, which includes a vertical part and a horizontal part. The vertical part and the horizontal part are connected. The upper end of the vertical part is connected to the air passage integrated connector, and the port of the horizontal part is connected to the air pipe interface of the cylinder through an air pipe.

[0009] Optionally, the model board is integrated with a magnet, and the sensor wires are connected to a circuit integrated plug, which is embedded in a plug socket.

[0010] Optionally, the material handling and feeding robotic arm further includes a main lifting mechanism, which includes a robotic arm, a main slider, a main slide rail, a main lifting plate, and a main lifting cylinder. At least two vertical and parallel main slide rails are fixed on the robotic arm. The main slider is fitted on the main slide rails and fixed on the main lifting plate. The main lifting cylinder is fixed on the robotic arm and drives the main lifting plate to move up and down. The main lifting plate and the mounting base are fixedly connected by bolts. Both the main lifting plate and the mounting base are provided with through slots for mounting the circuit integration connector.

[0011] Optionally, the mounting base is fixed with a pressure cloth outer frame, and a secondary lifting mechanism is installed in the middle of the mounting base. The secondary lifting mechanism includes a secondary slider, a secondary slide rail, a secondary lifting plate, and a secondary lifting cylinder. The secondary slide rail is fixed on the mounting base, the secondary slider is assembled on the secondary slide rail and fixed on the secondary lifting plate, and the secondary lifting cylinder is fixed on the mounting base and drives the secondary lifting plate to move up and down. The air inlet of the secondary lifting cylinder is connected to the air circuit integrated connector through a hose.

[0012] Optionally, a seam pressing mechanism is fixed on the secondary lifting plate. The seam pressing mechanism includes a support arm, multiple movable shafts, a movable block, a seam pressing plate, a seam changing cylinder, and a limiting plate. The support arm is provided with multiple first guide grooves, and the limiting plate is provided with multiple second guide grooves. Each movable shaft is slidably assembled in the first guide groove and the second guide groove. The limiting plate is driven by the seam changing cylinder to move linearly on the support arm. The end of the movable shaft is rotatably connected to the movable block, and the movable block is fixedly connected to the seam pressing plate. The two seam pressing plates open and close.

[0013] Optionally, the second guide groove is provided with a first guide path and a second guide path.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] Whether it's a folding robotic arm or a material handling and sewing robotic arm, rapid assembly and disassembly are possible. This involves the mechanical structure, pneumatic connections, and electrical connections. The mechanical action functions are modularly integrated and installed on the mounting base. At the same time, the wires of the sensors on the mechanical structure are gathered through the electrical integration connector, and the cylinders are connected to the pneumatic integration connector through hoses to achieve pneumatic convergence. Then, when external installation is required, the electrical circuit and pneumatic circuit can be quickly connected by plugging and unplugging, and the mechanical components can be quickly assembled and replaced. All three operations can be performed simultaneously in one step, achieving highly efficient assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the folding robotic arm according to Embodiment 1 of this application from one perspective;

[0017] Figure 2 This is another perspective illustration of a folding robotic arm;

[0018] Figure 3 yes Figure 2 Top view;

[0019] Figure 4 This is a diagram illustrating the quick disassembly state of the folding robotic arm;

[0020] Figure 5 This is a schematic diagram of the airway structure;

[0021] Figure 6 This is a structural diagram illustrating an example of the mating of a line integrated plug and a plug socket;

[0022] Figure 7 This is a schematic diagram of the material handling and sewing robot arm in Embodiment 2;

[0023] Figure 8 This is a schematic diagram of the first guide groove;

[0024] Figure 9 This is a rendering of a robotic arm that picks up and feeds materials for sewing, showing the effect of sewing.

[0025] Figure 10 This is a schematic diagram of the quick disassembly state of the material handling and sewing robot arm.

[0026] Key reference numerals in the accompanying drawings:

[0027] 1. Folding robotic arm; 2. Material handling and sewing robotic arm; 3. Sensor; 4. Mounting base; 41. Sealing ring; 5. Pneumatic integrated connector; 6. Electrical integrated connector; 7. Quick-release bolt; 8. Positioning pin; 9. Bracket;

[0028] 101. Boom; 102. Integrated wiring plug; 103. Plug socket; 104. Model plate; 105. Folding cylinder; 106. Air pipe interface; 107. Sensor slot; 108. Cylinder body; 109. Telescopic rod; 110. Adjustment seat; 111. Folding plate; 112. Adjustment groove; 113. Perforation; 114. Long waist groove; 115. Fine adjustment bolt; 116. Adapter frame; 117. Air passage; 118. Vertical part; 119. Horizontal part; 120. Magnet;

[0029] 202. Robotic arm; 203. Main slider; 204. Main slide rail; 205. Main lifting plate; 206. Main lifting cylinder; 207. Through groove; 208. Outer frame of pressing fabric; 210. Secondary slider; 211. Secondary slide rail; 212. Secondary lifting plate; 213. Secondary lifting cylinder; 215. Support arm; 216. Movable shaft; 217. Movable block; 218. Seam pressing plate; 219. Variable seam cylinder; 220. Limiting plate; 221. First guide groove; 222. Second guide groove;

[0030] 223. First guiding path; 224. Second guiding path. Detailed Implementation

[0031] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0032] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be changed at will, and the layout of the components may also be more complex.

[0033] The specific embodiments of this application will be further described below with reference to the accompanying drawings. Example 1:

[0034] This application discloses a highly efficient assembly and disassembly robotic arm mechanism for sewing equipment, including a folding robotic arm 1 and a material-feeding robotic arm 2. Both the folding robotic arm 1 and the material-feeding robotic arm 2 include multiple cylinders, multiple sensors 3, and a mounting base 4. The cylinders require air hoses for actuation, and the air hoses provide the air source power. Each cylinder is connected to the mounting base 4 via a flexible hose. In practical applications, connectors are provided at both ends of the hoses to secure and seal the hose ends. Each sensor 3 is connected to the mounting base 4 via a wire, and the mounting base 4 is equipped with an integrated air circuit connector 5 and an integrated electrical circuit connector 6.

[0035] The sensor 3 here could be a limit switch sensor 3 (Hall sensor 3) on the cylinder, etc. The integrated air circuit connector 5 and the integrated circuit connector 6 here are a general term; they can be separate components or integrated into the connector structure.

[0036] refer to Figure 1 , 2 As shown in Figures 3 and 4, the folding robotic arm 1 also includes a support 9, an arm 101, a wiring connector 102, and a connector socket 103. The arm 101 is fixed to the mounting base 4 by four fine-tuning bolts 115, allowing for fine-tuning of the mounting distance between the mounting base 4 and the arm 101. The wiring connector 102 is shown in Figure 103. Figure 6 As shown, it can complete the wiring connection work, and disassembly and assembly are very convenient. The integrated wiring plug 102 is connected to the plug socket 103.

[0037] exist Figure 1 and Figure 4 As can be seen, the inner side of the bracket 9 is fixed with the integrated circuit connector 6, and the outer side is fixed with the integrated pneumatic connector 5. The integrated circuit connector 6 contains a wiring connector 102. The mounting base 4 has a fixing position for fixing the bracket 9 (i.e., the mounting location of the quick-release bolt 7). The mounting base 4 has a pneumatic passage that mates with the integrated pneumatic connector 5. The mounting base 4 has a connector socket 103 that mates with the integrated pneumatic connector 102 inside the integrated circuit connector 6.

[0038] Firstly, to facilitate the easy installation and removal of the air hose and improve the integration, the other end of the hose (air pipe) connected to the cylinder in this solution can be connected to the inlet of the side air passage 117 on the mounting base 4. The mounting base 4 is provided with an air passage 117, which includes a vertical part 118 and a horizontal part 119. The vertical part 118 and the horizontal part 119 are connected. The upper end of the vertical part 118 is connected to the air circuit integration connector 5, and the port of the horizontal part 119 is connected to the air pipe interface 106 of the cylinder body 108 through an air pipe. Figure 5 The dotted line in the diagram illustrates another air passage 117, demonstrating that multiple air passages 117 can be designed using vertical sections 118 and horizontal sections 119 of varying lengths, thereby enabling the transfer of air paths. This structural transfer of air paths makes assembly and disassembly very convenient.

[0039] refer to Figure 4 As can be seen, by simply removing the four quick-release bolts 7, the pneumatic, electrical, and mechanical modular structures can be disassembled simultaneously, or during assembly, the positioning pins 8 can be used to quickly achieve automatic docking and assembly.

[0040] The front end of the boom 101 is fixedly connected to the model plate 104, and a cylinder, which is a folding cylinder 105, is fixedly connected to the edge of the model plate 104. A folding cylinder 105 is also fixedly installed on the bottom surface of the mounting base 4. The model plate 104 is pocket-shaped. In order to fold the fabric into a pocket shape, folding cylinders 105 need to be distributed along its edge.

[0041] Specifically, the folding cylinder 105 includes an air pipe interface 106 (in... Figure 1 The diagram only shows a portion of the components; in reality, each cylinder 108 has these components on its side, including a sensor 3 slot, cylinder 108, telescopic rod 109, adjusting seat 110, and folding plate 111. The air pipe interface 106 is located on the side of the cylinder 108, the sensor 3 slot is located on the top of the cylinder 108, the adjusting seat 110 is fixed to the end of the telescopic rod 109, and the folding plate 111 is fastened to the adjusting groove 112 of the adjusting seat 110. The sensor 3 on the cylinder 108 is a Hall effect sensor 3, which can sense the cylinder's stroke.

[0042] To facilitate wire layout and traction, the mounting base 4 is provided with a through hole 113, so that the wires of the sensor 3 on the cylinder block 108 can be bundled together and pulled to the through hole 113.

[0043] The boom 101 is provided with a long slot 114, and a fine-adjustment bolt 115 is installed in the long slot 114 to adjust its fixed position on the mounting base 4. An adapter bracket 116 is also fixed on the boom 101, which allows the wires of the sensor 3 to be connected via connectors. This connector arrangement allows for further integration, disassembly, and wiring of the wires, preventing them from becoming messy.

[0044] The model board 104 integrates and encapsulates a magnet 120. The wires of the sensor 3 are all connected to the plug socket 103. The circuit integrated plug 102 is in the through slot of the circuit integrated connector 6. The circuit integrated plug 102 is used to mate with the plug socket 103.

[0045] A sealing ring 41 is also installed in the gas circuit assembly to ensure a reliable seal and prevent air leakage. In this design, the electrical circuit, gas circuit, and mechanical modular structure can be disassembled simultaneously after the four quick-release bolts 7 are removed. Similarly, during installation, the assembly accuracy and reliability can be improved by using locating pins, allowing for the simultaneous connection of the electrical circuit, gas circuit, and mechanical modular structure. Example 2:

[0046] refer to Figure 10 As shown, the mechanical module can be replaced by removing the four quick-release bolts 7. The operation is simple and efficient. The pneumatic and electrical circuits are separated. During assembly, the pneumatic circuits are connected to each other, and the electrical circuits are connected via connectors (plug and socket components).

[0047] refer to Figure 7 and Figure 8 As shown in the figure, in this scheme, the material picking and sewing robotic arm 2 also includes a main lifting mechanism.

[0048] The main lifting mechanism includes a robotic arm 202, a main slider 203, a main slide rail 204, a main lifting plate 205, and a main lifting cylinder 206. The main slider 203 and the main slide rail 204 form a linear movable pair. At least two vertical and parallel main slide rails 204 are fixed on the robotic arm 202. The main slider 203 is fitted onto the main slide rails 204 and fixed to the main lifting plate 205. The main lifting cylinder 206 is fixed to the robotic arm 202 and drives the main lifting plate 205 to move up and down. The main lifting plate 205 and the mounting base 4 are fixedly connected by quick-release bolts 7. Both the main lifting plate 205 and the mounting base 4 are provided with through slots 207 for mounting the circuit integration connector 6.

[0049] In this design, the mechanical assembly and disassembly can be achieved quickly by using the four quick-release bolts 7 on the mounting base 4 to separate it from the robotic arm 202, facilitating assembly and disassembly. Separation also allows for the separation of the pneumatic and electrical circuits. The pneumatic circuit integrated connector 5 is integrated directly into the mounting base 4; specifically, an air passage 117 is directly provided on the mounting base 4, and the cylinder can be directly connected to the inlet of the air passage 117 via a flexible hose. As for the wiring, it is embedded in the through groove 207 via a wiring integrated plug 102.

[0050] This demonstrates that quick assembly and disassembly are possible.

[0051] On the other hand, the mounting base 4 is fixed with a pressure cloth outer frame 208, and a secondary lifting mechanism is installed in the middle of the mounting base 4. The secondary lifting mechanism includes a secondary slider 210, a secondary slide rail 211, a secondary lifting plate 212, and a secondary lifting cylinder 213. The secondary slide rail 211 is fixed on the mounting base 4, the secondary slider 210 is assembled on the secondary slide rail 211 and fixed on the secondary lifting plate 212, and the secondary lifting cylinder 213 is fixed on the mounting base 4 and drives the secondary lifting plate 212 to move up and down. The air inlet of the secondary lifting cylinder 213 is connected to the air circuit integrated connector 5 (line integrated plug 102) through a hose.

[0052] Therefore, the lifting action of the outer frame 208 of the pressing cloth is achieved by the main lifting mechanism, while the lifting action of the pressing seam mechanism is achieved by the secondary lifting mechanism.

[0053] A seam-pressing mechanism is fixed on the secondary lifting plate 212. The seam-pressing mechanism includes a support arm 215, multiple movable shafts 216, a movable block 217, a seam-pressing plate 218, a seam-changing cylinder 219, and a limiting plate 220. The support arm 215 is provided with multiple first guide grooves 221, and the limiting plate 220 is provided with multiple second guide grooves 222. Each movable shaft 216 is slidably mounted within the first guide groove 221 and the second guide groove 222. The limiting plate 220 is driven by the seam-changing cylinder 219 to move linearly on the support arm 215. The end of each movable shaft 216 is rotatably connected to the movable block 217, and the movable block 217 is fixedly connected to the seam-pressing plate 218. The two seam-pressing plates 218 open and close. The second guide groove 222 is provided with a first guide path 223 and a second guide path.

[0054] The seam pressing mechanism has three seam pressing plates 218. The middle seam pressing plate 218 can move back and forth, and the remaining two are symmetrically distributed on both sides of the middle seam pressing plate 218 to realize the opening and closing action.

[0055] When the variable stitch cylinder 219 extends, it drives the limiting plate 220 to move forward (with the cylinder axis pointing forward). At this time, the two pressing plates 218 open, thus forming a gap between them and the outer frame 208 of the pressing fabric, for forming a seam as shown. Figure 9 The outer seam is shown. Then, when the seam-changing cylinder 219 retracts, it drives the limiting plate 220 to move backward. At this time, the two pressing plates 218 close, thus creating a gap between them and the outer edge of the pressing fabric 208, which is used to form a seam as shown. Figure 9 The inner seam shown is a double seam used for pocket stitching. The difference from traditional double seams is that... Figure 9 As shown, the width of the double suture is greater than L2 on both sides, meaning the double suture is wider at the top and narrower at the bottom.

[0056] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application.

[0057] Anyone skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A highly efficient assembly and disassembly robotic arm mechanism for sewing equipment, comprising a folding robotic arm and a material-feeding robotic arm, characterized in that, Both the folding robotic arm and the material handling and feeding robotic arm include multiple cylinders, multiple sensors, and a mounting base. Each cylinder is connected to the mounting base via a hose, and each sensor is connected to the mounting base via a wire. The mounting base is equipped with an integrated air circuit connector and an integrated circuit connector.

2. The efficient assembly and disassembly robotic arm mechanism on the sewing equipment according to claim 1, characterized in that, The folding robotic arm also includes a support frame, a boom, a circuit integrated plug, and a plug socket; The inner side of the bracket is fixed with an integrated circuit connector, and the outer side of the bracket is fixed with an integrated air circuit connector; the mounting base is provided with a fixing position for fixing the bracket, a plug for the integrated circuit connector to connect to, and an air passage for the integrated air circuit connector to connect to. A model plate is fixedly connected to the front end of the boom, and a cylinder is fixedly connected to the edge of the model plate. The cylinder is a fabric folding cylinder, and a fabric folding cylinder is also fixedly installed on the bottom surface of the mounting base.

3. The efficient assembly and disassembly robotic arm mechanism on the sewing equipment according to claim 2, characterized in that, The folding cylinder includes an air pipe interface, a sensor slot, a cylinder body, a telescopic rod, an adjusting seat, and a folding plate. The air pipe interface is located on the side of the cylinder body, the sensor slot is located on the top of the cylinder body, the adjusting seat is fixed to the end of the telescopic rod, and the folding plate is fastened to the adjusting groove of the adjusting seat.

4. The efficient disassembly and assembly robotic arm mechanism on the sewing equipment according to claim 3, characterized in that, The mounting base has a through hole, and the boom has a long groove. Bolts are installed in the long groove of the boom to adjust its fixed position on the mounting base. An adapter is also fixed on the boom. The adapter allows the sensor wires to be transferred through connectors. The mounting base has an air passage, which includes a vertical part and a horizontal part. The vertical part and the horizontal part are connected. The upper end of the vertical part is connected to the air passage integrated connector, and the port of the horizontal part is connected to the air pipe interface of the cylinder through an air pipe.

5. The efficient assembly and disassembly robotic arm mechanism on the sewing equipment according to claim 2, characterized in that, The model board is integrated with a magnet, and the sensor wires are connected to a circuit integrated plug, which is embedded in the plug socket.

6. The efficient assembly and disassembly robotic arm mechanism on the sewing equipment according to claim 1, characterized in that, The material feeding and sewing robotic arm also includes a main lifting mechanism, which includes a robotic arm, a main slider, a main slide rail, a main lifting plate, and a main lifting cylinder. At least two vertical and parallel main slide rails are fixed on the robotic arm. The main slider is fitted on the main slide rail and fixed on the main lifting plate. The main lifting cylinder is fixed on the robotic arm and drives the main lifting plate to move up and down. The main lifting plate and the mounting base are fixedly connected by bolts. Both the main lifting plate and the mounting base are provided with through slots for the installation of the circuit integrated connector.

7. The efficient assembly and disassembly robotic arm mechanism on the sewing equipment according to claim 6, characterized in that, The mounting base is fixed with a pressure cloth outer frame. A secondary lifting mechanism is installed in the middle of the mounting base. The secondary lifting mechanism includes a secondary slider, a secondary slide rail, a secondary lifting plate, and a secondary lifting cylinder. The secondary slide rail is fixed on the mounting base. The secondary slider is assembled on the secondary slide rail and fixed on the secondary lifting plate. The secondary lifting cylinder is fixed on the mounting base and drives the secondary lifting plate to move up and down. The air inlet of the secondary lifting cylinder is connected to the air circuit integrated connector through a hose.

8. The efficient assembly and disassembly robotic arm mechanism on the sewing equipment according to claim 7, characterized in that, A seam pressing mechanism is fixed on the secondary lifting plate. The seam pressing mechanism includes a support arm, multiple movable shafts, a movable block, a seam pressing plate, a seam changing cylinder, and a limiting plate. The support arm is provided with multiple first guide grooves, and the limiting plate is provided with multiple second guide grooves. Each movable shaft is slidably assembled in the first guide groove and the second guide groove. The limiting plate is driven by the seam changing cylinder to move linearly on the support arm. The end of the movable shaft is rotatably connected to the movable block, and the movable block is fixedly connected to the seam pressing plate. The two seam pressing plates open and close.

9. The efficient disassembly and assembly robotic arm mechanism on the sewing equipment according to claim 8, characterized in that, The second guide groove is provided with a first guide path and a second guide path.

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