Intelligent shoe tongue sewing equipment

Abstract

The utility model discloses an intelligent shoe tongue sewing device which comprises a sewing workbench and a sewing machine head, and a material storage device and a material taking device are arranged on one side of the sewing workbench. A feeding area and a sewing area are arranged on the sewing workbench, and a camera used for recognizing the position of a shoe tongue upper piece and the position of a shoe tongue lower piece is arranged above the feeding area. The material taking device comprises a robot arm which is used for grabbing the upper shoe tongue pieces and the lower shoe tongue pieces at the material storage device, placing the upper shoe tongue pieces and the lower shoe tongue pieces to a material placing area and stacking the upper shoe tongue pieces on the lower shoe tongue pieces, a material taking main plate is installed at the execution end of the robot arm through a material taking connecting piece, and a first needling assembly and a second needling assembly are fixedly installed on the material taking main plate; the material grabbing direction of the first needling assembly is perpendicular to the material grabbing direction of the second needling assembly. The positions of the upper tongue piece and the lower tongue piece are judged through the camera above the discharging area, deviation correction and stacking are conducted on the positions of the upper tongue piece and the lower tongue piece through the robot arm, and intelligent sewing of the tongue is automatically achieved.

Description

Technical Field

[0001] This utility model belongs to the field of sewing machine equipment technology, specifically a smart shoe tongue sewing device. Background Technology

[0002] The shoe tongue generally refers to the part between the bottom of the shoelaces and the top of the instep. It's called the shoe tongue because its shape somewhat resembles a tongue. Shoe tongues are commonly used in athletic shoes, and considering breathability, perforated mesh fabric is the most common material for them.

[0003] Shoe tongues typically consist of an upper piece and a lower piece. In actual shoe tongue manufacturing, manual operation is commonly used. An operator manually folds the upper and lower pieces onto a worktable, and then a sewing machine sews the edges of the upper and lower pieces together. Because this is all manual work, processing quality cannot be guaranteed, and labor costs are high while processing efficiency is low. Summary of the Invention

[0004] This utility model addresses the aforementioned technical problems by providing an intelligent shoe tongue sewing device that automates the processes of feeding, stacking, conveying, and sewing the upper and lower parts of the shoe tongue, thereby reducing labor costs, ensuring processing quality, and improving processing efficiency.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an intelligent shoe tongue sewing device, including a sewing workbench and a sewing machine head, a material storage device for storing the upper and lower pieces of the shoe tongue and a material retrieval device are provided on one side of the sewing workbench; a material feeding area and a sewing area are provided on the sewing workbench, and a camera for identifying the position of the upper and lower pieces of the shoe tongue is provided above the material feeding area; the material retrieval device includes a robotic arm for grabbing the upper and lower pieces of the shoe tongue at the material storage device and placing them in the material feeding area, and stacking the upper piece of the shoe tongue on the lower piece of the shoe tongue, the execution end of the robotic arm is equipped with a material retrieval main board through a material retrieval connector, and a first needle punching component and a second needle punching component are fixedly installed on the material retrieval main board; the material gripping direction of the first needle punching component is perpendicular to the material gripping direction of the second needle punching component.

[0006] To optimize the above technical solution, the present invention also includes the following improved technical solutions.

[0007] The aforementioned storage device includes two sets of shoe tongue hoppers symmetrically arranged at the front and rear ends of the feeding base. Each shoe tongue hopper includes a first hopper and a second hopper mirror-mounted on the feeding base. The first hopper contains a first support plate, and the second hopper contains a second support plate. The first support plate and the second support plate are connected by a lifting drive assembly, and a rotation drive assembly is connected below the feeding base.

[0008] The left and right ends of the aforementioned feeding base are respectively provided with a first material frame and a second material frame. The first material frame is provided with a first guide rail, and the second material frame is provided with a second guide rail. The first material bin includes a first limiting plate and a second limiting plate, which are slidably installed on the first guide rail. The second material bin includes a third limiting plate and a fourth limiting plate, which are slidably installed on the second guide rail.

[0009] A first bidirectional lead screw is provided above the first guide rail; a first movable block and a second movable block that move in opposite directions are provided on the first bidirectional lead screw, a first limiting plate is connected to the first movable block, and a second limiting plate is connected to the second movable block.

[0010] The aforementioned lifting drive assembly includes a lifting module and a lifting drive motor. The lifting module is mounted on the loading base via a module mounting column, and the lifting drive motor is connected to the lifting module via a coupling. The lifting module is connected to the first material support plate and the second material support plate via a material support lifting frame.

[0011] The aforementioned rotary drive assembly includes a central control rotary platform and a rotary drive motor. The platform base of the central control rotary platform is fixed on the mounting bracket, the rotating surface of the central control rotary platform is fixedly connected to the loading base, and the drive shaft of the rotary drive motor is rotatably connected to the input end of the central control rotary platform.

[0012] The aforementioned main material handling plate is fixed with a first material handling mounting plate and a second material handling mounting plate, the mounting surface of the first material handling mounting plate being perpendicular to the mounting surface of the second material handling mounting plate; a first needle-punching assembly is fixed to the mounting surface of the first material handling mounting plate; a second needle-punching assembly is fixed to the mounting surface of the second material handling mounting plate; parallel material handling secondary plates are provided on the outer side of the main material handling plate, and the first and second material handling mounting plates are fixed between the secondary material handling plates and the main material handling plate.

[0013] The first side of the aforementioned material-retrieving main board and the first side of the material-retrieving secondary board are fixed with a first cover plate for attaching the material to be retrieved. The first cover plate has an opening for the material-retrieving needle of the first needle-punching assembly to extend out. The second side of the material-retrieving main board and the second side of the material-retrieving secondary board are provided with a second cover plate for attaching the material to be retrieved. The second cover plate has an opening for the material-retrieving needle of the second needle-punching assembly to extend out.

[0014] The aforementioned sewing workbench is equipped with a feeding device that moves back and forth between the feeding area and the sewing area. The feeding device includes a pressing drive cylinder that drives the pressing plate to move up and down, a pushing drive cylinder that drives the pressing plate to move back and forth, and a rodless cylinder that drives the pressing plate to move horizontally between the feeding area and the sewing area.

[0015] Compared with the prior art, the intelligent shoe tongue sewing equipment of this utility model uses a material picking device to pick up the upper and lower pieces of the shoe tongue from the storage device and place them in the material feeding area of ​​the sewing worktable. The camera above the material feeding area determines the position of the upper and lower pieces of the shoe tongue, and a robotic arm corrects and stacks the positions of the upper and lower pieces of the shoe tongue. Finally, the feeding device delivers the upper and lower pieces of the shoe tongue to the sewing area of ​​the sewing worktable, thus automating the intelligent sewing of the shoe tongue. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0017] Figure 2 This is a three-dimensional structural diagram of the material storage device.

[0018] Figure 3 This is an exploded view of the shoe tongue hopper.

[0019] Figure 4 This is an exploded view of the lifting drive assembly.

[0020] Figure 5 This is an exploded view of the rotary drive assembly.

[0021] Figure 6 This is a three-dimensional structural diagram of the material handling device. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0023] Figures 1 to 6 The diagram shown is a structural schematic of this utility model.

[0024] The attached figures are labeled as follows: sewing workbench 1, feeding area 1a, sewing area 1b, camera 2, feeding base 3, first material bin 4, first limiting plate 4a, second limiting plate 4b, second material bin 5, third limiting plate 5a, fourth limiting plate 5b, first material support plate 6, second material support plate 7, first material frame 8, second material frame 9, first guide rail 10, first mounting base plate 11, second guide rail 12, second mounting base plate 13, first slider 14, first adjusting plate 15, first mounting block 16, second adjusting plate 17, second mounting block 18, first bidirectional lead screw 19, first movable block 19a, second movable block 19b, first mounting upright plate 20, second mounting upright plate 21, first handwheel 22, first retaining ring 23. 24. First limiting block; 25. Third adjusting plate; 26. Fourth adjusting plate; 27. Second handwheel; 28. Lifting module; 29. ​​Lifting drive motor; 30. Module mounting column; 31. Coupling; 32. Material lifting frame; 33. Lifting moving plate; 34. Material supporting connecting plate; 35. Linear bearing; 36. Guide rod; 37. Shaft connecting plate; 38. Photoelectric sensor; 39. Central control rotating platform; 39a. Platform base; 39b. Rotating table; 40. Rotating drive motor; 41. Mounting bracket; 42. Sensor; 43. Material picking main board; 44. Material picking connecting piece; 45. First needle punch assembly; 46. Second needle punch assembly; 47. First material picking mounting plate; 48. Second material picking mounting plate; 49. Secondary material picking plate; 50. First cover plate; 51. Second cover plate; 52. Robot arm.

[0025] This utility model discloses an intelligent shoe tongue sewing device, including a sewing workbench 1 and a sewing machine head. The front end of the sewing workbench 1 is provided with a storage device for storing the upper and lower pieces of the shoe tongue. A material picking device is provided on one side of the sewing workbench 1 for picking up the upper and lower pieces of the shoe tongue. The sewing workbench 1 is provided with a feeding area 1a and a sewing area 1b. The sewing workbench 1 is provided with a feeding device that moves back and forth between the feeding area 1a and the sewing area 1b. Above the feeding area 1a is a camera 2 for identifying the position of the upper and lower pieces of the shoe tongue and assisting in correction.

[0026] The material storage device includes two sets of shoe tongue material bins symmetrically arranged at the front and rear ends of the material loading base 3. Each shoe tongue material bin includes a first material bin 4 and a second material bin 5 mirror-mounted on the material loading base 3. The first material bin 4 and the second material bin 5 are used to hold the upper or lower piece of the shoe tongue. The first material bin 4 is provided with a first material support plate 6, and the second material bin 5 is provided with a second material support plate 7. The first material support plate 6 and the second material support plate 7 are connected to a lifting drive assembly, and a rotation drive assembly is connected below the material loading base 3.

[0027] The left and right ends of the feeding base 3 are respectively provided with a first material frame 8 and a second material frame 9. The first material frame 8 is provided with a first guide rail 10, which is fixed to the first material frame 8 by a first mounting base plate 11. The second material frame 9 is provided with a second guide rail 12, which is fixed to the second material frame 9 by a second mounting base plate 13.

[0028] The first hopper 4 includes a first limiting plate 4a and a second limiting plate 4b, which are slidably mounted on a first guide rail 10. The first guide rail 10 has multiple first sliders 14. The bottom of the first limiting plate 4a has a first adjusting plate 15, and the bottom of the first adjusting plate 15 has a first mounting block 16, the bottom of which is connected to the first slider 14. The bottom of the second limiting plate 4b has a second adjusting plate 17, and the bottom of the second adjusting plate 17 has a second mounting block 18, the bottom of which is connected to the first slider 14.

[0029] A first bidirectional lead screw 19 is provided above the first guide rail 10. A first mounting plate 20 and a second mounting plate 21 are respectively provided at both ends of the first mounting base plate 11. The two ends of the first bidirectional lead screw 19 are rotatably connected to the first mounting plate 20 and the second mounting plate 21, respectively. A first movable block 19a and a second movable block 19b that move in opposite directions are provided on the first bidirectional lead screw 19. A first mounting block 16 is fitted onto the first movable block 19a, and a first limiting plate 4a is connected to the first movable block 19a, moving with the first movable block 19a. A second mounting block 18 is fitted onto the second movable block 19b, and a second limiting plate 4b is connected to the second movable block 19b, moving with the second limiting plate 4b.

[0030] One end of the first bidirectional lead screw 19 is equipped with a first handwheel 22, which is located outside the second mounting plate 21. The other end of the first bidirectional lead screw 19 is equipped with a first retaining ring 23, which is located outside the first mounting plate 20. Turning the first handwheel 22 causes the first movable block 19a and the second movable block 19b on the first bidirectional lead screw 19 to move towards each other, thereby causing the first limiting plate 4a and the second limiting plate 4b to move towards each other along the first guide rail 10 to accommodate materials of different sizes. A first limiting block 24 is provided between the second mounting plate 21 and the first handwheel 22. After the corresponding position is adjusted, the first limiting block 24 is fixed on the first bidirectional lead screw 19 to prevent loosening.

[0031] The second hopper 5 has the same structure as the first hopper 4. The second hopper 5 includes a third limiting plate 5a and a fourth limiting plate 5b, which are slidably mounted on the second guide rail 12. The second guide rail 12 has multiple second sliders. The bottom of the third limiting plate 5a has a third adjusting plate 25, and the bottom of the third adjusting plate 25 has a third mounting block, the bottom of which is connected to the first slider 14. The bottom of the fourth limiting plate 5b has a fourth adjusting plate 26, and the bottom of the fourth adjusting plate 26 has a fourth mounting block, the bottom of which is connected to the second slider.

[0032] A second bidirectional lead screw is provided above the second guide rail 12. A third mounting plate and a fourth mounting plate are respectively provided at both ends of the second mounting base plate 13. The two ends of the second bidirectional lead screw are rotatably connected to the third mounting plate and the fourth mounting plate, respectively. A third movable block and a fourth movable block that move in opposite directions are provided on the second bidirectional lead screw. The third mounting block is fitted onto the third movable block, and a third limiting plate 5a is connected to the third movable block, moving with it. The fourth mounting block is fitted onto the fourth movable block, and a fourth limiting plate 5b is connected to the fourth movable block, moving with it.

[0033] A second handwheel 27 is provided at one end of the second bidirectional lead screw, located on the outer side of the fourth mounting plate. A second retaining ring is provided at the other end of the second bidirectional lead screw, located on the outer side of the third mounting plate. Turning the second handwheel 27 causes the third and fourth movable blocks on the second bidirectional lead screw to move towards each other, thereby causing the third limiting plate 5a and the fourth limiting plate 5b to move towards each other along the second guide rail 12 to accommodate materials of different sizes. A second limiting block is provided between the fourth mounting plate and the second handwheel 27. After the corresponding positions are adjusted, the second limiting block is fixed on the second bidirectional lead screw to prevent loosening.

[0034] The lifting drive assembly includes a lifting module 28 and a lifting drive motor 29. The lifting module 28 is mounted on the loading base 3 via a module mounting column 30. The lifting drive motor 29 is connected to the lifting module 28 via a coupling 31. The lifting module 28 is connected to the first material support plate 6 and the second material support plate 7 via a material support lifting frame 32. The lifting module 28 is equipped with a lifting moving plate 33, which is connected to the rear end of the material support lifting frame 32 via a material support connecting plate 34. The first material support plate 6 and the second material support plate 7 are mounted on the front end of the material support lifting frame 32. The lifting drive motor 29 drives the first material support plate 6 and the second material support plate 7 to move up and down synchronously.

[0035] The rear end of the material lifting frame 32 is equipped with a linear bearing 35, and a guide rod 36 is installed inside the linear bearing 35. The bottom of the guide rod 36 is fixed on the loading base 3. Since the two sets of lifting drive components are symmetrically installed on the loading base 3, the two sets of lifting modules 28 are fixed together, and the tops of the guide rods 36 in the two sets of lifting drive components are connected by a shaft connecting plate 37.

[0036] The top of the first hopper 4 and the top of the second hopper 5 are equipped with photoelectric sensors 38 for detecting whether the material on the shoe tongue is being fed. When the photoelectric sensor 38 detects that the top of the first hopper 4 and the second hopper 5 is short of material, the lifting module 28 drives the first material support plate 6 and the second material support plate 7 to rise synchronously, moving the material in the second-to-top layer of the first hopper 4 and the second hopper 5 to the top layer.

[0037] The rotary drive assembly includes a central control rotary platform 39 and a rotary drive motor 40. The platform base 39a of the central control rotary platform 39 is fixed on the mounting bracket 41. The rotating table 39b of the central control rotary platform 39 is fixedly connected to the loading base 3, and the drive shaft of the rotary drive motor 40 is rotatably connected to the input end of the central control rotary platform 39. The central control rotary platform 39 typically uses a gear transmission system to achieve rotary motion. The gears are connected to the power source through the transmission shaft, and the rotation of the rotary platform is achieved through the meshing of the gears. Therefore, the rotary drive motor 40 drives the rotary platform to rotate, thereby driving the loading base 3 to rotate.

[0038] Sensors 42 are installed on the rotating platform 39b of the central control rotating platform 39 to detect information such as the position, speed and status of the rotating platform. Sensors 42 are connected to the control system to realize precise control and monitoring of the rotating platform.

[0039] The lifting drive assembly drives the first material support plate 6 and the second material support plate 7 to feed materials upward. When a set of shoe tongue material bins is short of material, the rotation drive assembly drives the feeding base 3 to rotate. The positions of the two sets of shoe tongue material bins on the feeding base 3 are interchanged, which will not affect the normal operation of the production line. At the same time, it is convenient to release materials and improves work efficiency.

[0040] The material handling device includes a robotic arm 52 and a material handling main board 43 installed at the execution end of the robotic arm 52. The robotic arm 52 is fixedly connected to the material handling main board 43 through a material handling connector 44. The material handling main board 43 is fixedly mounted with a first needle-punching component 45 and a second needle-punching component 46. The material handling direction of the first needle-punching component 45 is perpendicular to the material handling direction of the second needle-punching component 46.

[0041] like Figure 6 As shown, the first needle-punching assembly 45 is horizontally mounted inside the material-picking main board 43 via the first material-picking mounting plate 47, and the second needle-punching assembly 46 is vertically mounted inside the material-picking main board 43 via the second material-picking mounting plate 48.

[0042] The main material picking board 43 is provided with a corresponding secondary material picking board 49, which is fixedly connected to the first material picking mounting plate 47 and the second material picking mounting plate 48. A first cover plate 50 and a second cover plate 51 are provided between the main material picking board 43 and the secondary material picking board 49. The first cover plate 50 is located at the bottom of the main material picking board 43, and the second cover plate 51 is located at the front end of the main material picking board 43.

[0043] In this embodiment, both the first needle-punching component 45 and the second needle-punching component 46 adopt a material gripping device for sewing fabric as described in patent application document No. 202021217566.7. In this embodiment, there are two sets of the first needle-punching component 45 and the second needle-punching component 46. The number of needle-punching components can be adjusted appropriately according to different sizes of materials, and there can be one or more needle-punching components.

[0044] The robotic arm 52 moves the material-picking mainboard 43 to the storage device. The first needle-punching component 45 moves above the first material bin 4. The robotic arm 52 moves the first cover plate 50 downward to press the material, and the first needle-punching component 45 picks up the upper piece of the shoe tongue. The robotic arm 52 rotates and moves the material-picking mainboard 43. The second needle-punching component 46 moves above the second material bin 5. The robotic arm 52 moves the second cover plate 51 downward to press the material, and the second needle-punching component 46 picks up the lower piece of the shoe tongue. Subsequently, the robotic arm 52 moves the material-picking mainboard 43 to the feeding area 1a of the sewing workbench 1. The upper and lower pieces of the shoe tongue are placed in the feeding area 1a in sequence, realizing the material picking steps of the upper and lower pieces of the shoe tongue. Then, the camera 2 above the feeding area 1a collects data on the position of the upper and lower pieces of the shoe tongue. The control system controls the robotic arm 52 to perform stacking and correction steps on the upper and lower pieces of the shoe tongue.

[0045] The feeding device includes a pressing drive cylinder that drives the pressing plate to move up and down, a pushing drive cylinder that drives the pressing plate to move back and forth, and a rodless cylinder that drives the pressing plate to move horizontally between the feeding area 1a and the sewing area 1b. The feeding device moves the stacked upper and lower pieces of the shoe tongue to the sewing area 1b. A sewing machine head is located above the sewing area 1b to sew the edges of the upper and lower pieces of the shoe tongue together.

[0046] The preferred embodiment of this utility model has been described, and various changes or modifications made by those skilled in the art will not depart from the scope of this utility model.

Claims

1. A smart shoe tongue sewing device, comprising a sewing worktable (1) and a sewing machine head, characterized in that: The sewing workbench (1) is provided with a storage device for storing the upper and lower pieces of the shoe tongue and a material retrieval device on one side; the sewing workbench (1) is provided with a feeding area (1a) and a sewing area (1b), and a camera (2) for identifying the position of the upper and lower pieces of the shoe tongue is provided above the feeding area (1a); the material retrieval device includes a robotic arm (52) for grabbing the upper and lower pieces of the shoe tongue at the storage device and placing them in the feeding area (1a) and stacking the upper piece of the shoe tongue on the lower piece of the shoe tongue. The execution end of the robotic arm (52) is equipped with a material retrieval main board (43) through a material retrieval connector (44). The material retrieval main board (43) is fixedly equipped with a first needle punch assembly (45) and a second needle punch assembly (46); the gripping direction of the first needle punch assembly (45) is perpendicular to the gripping direction of the second needle punch assembly (46).

2. The intelligent shoe tongue sewing device according to claim 1, characterized in that: The storage device includes two sets of shoe tongue hoppers symmetrically arranged at the front and rear ends of the loading base (3). The shoe tongue hopper includes a first hopper (4) and a second hopper (5) mirror-mounted on the loading base (3). The first hopper (4) is provided with a first support plate (6), and the second hopper (5) is provided with a second support plate (7). The first support plate (6) and the second support plate (7) are connected by a lifting drive assembly. A rotation drive assembly is connected below the loading base (3).

3. The intelligent shoe tongue sewing device according to claim 2, characterized in that: The left and right ends of the feeding base (3) are respectively provided with a first material frame (8) and a second material frame (9). The first material frame (8) is provided with a first guide rail (10), and the second material frame (9) is provided with a second guide rail (12). The first material bin (4) includes a first limiting plate (4a) and a second limiting plate (4b). The first limiting plate (4a) and the second limiting plate (4b) are slidably installed on the first guide rail (10). The second material bin (5) includes a third limiting plate (5a) and a fourth limiting plate (5b). The third limiting plate (5a) and the fourth limiting plate (5b) are slidably installed on the second guide rail (12).

4. The intelligent shoe tongue sewing device according to claim 3, characterized in that: A first bidirectional lead screw (19) is provided above the first guide rail (10); a first movable block (19a) and a second movable block (19b) that move in opposite directions are provided on the first bidirectional lead screw (19); the first limiting plate (4a) is connected to the first movable block (19a), and the second limiting plate (4b) is connected to the second movable block (19b).

5. The intelligent shoe tongue sewing device according to claim 4, characterized in that: The lifting drive assembly includes a lifting module (28) and a lifting drive motor (29). The lifting module (28) is mounted on the loading base (3) via a module mounting column (30). The lifting drive motor (29) is connected to the lifting module (28) via a coupling (31). The lifting module (28) is connected to the first material support plate (6) and the second material support plate (7) via a material support lifting frame (32).

6. The intelligent shoe tongue sewing device according to claim 5, characterized in that: The rotary drive assembly includes a central control rotary platform (39) and a rotary drive motor (40). The platform base (39a) of the central control rotary platform (39) is fixed on the mounting bracket (41). The rotating table (39b) of the central control rotary platform (39) is fixedly connected to the loading base (3). The drive shaft of the rotary drive motor (40) is rotatably connected to the input end of the central control rotary platform (39).

7. The intelligent shoe tongue sewing device according to claim 1, characterized in that: The main material handling plate (43) is fixed with a first material handling mounting plate (47) and a second material handling mounting plate (48), the mounting surface of the first material handling mounting plate (47) is perpendicular to the mounting surface of the second material handling mounting plate (48); the first needle punch assembly (45) is fixed on the mounting surface of the first material handling mounting plate (47); the second needle punch assembly (46) is fixed on the mounting surface of the second material handling mounting plate (48); parallel material handling secondary plates (49) are provided on the outside of the main material handling plate (43), the first material handling mounting plate (47) and the second material handling mounting plate (48) are fixed between the secondary material handling plate (49) and the main material handling plate (43).

8. The intelligent shoe tongue sewing device according to claim 7, characterized in that: The first side of the main material picking plate (43) and the first side of the secondary material picking plate (49) are fixed with a first cover plate (50) for attaching the material to be picked. The first cover plate (50) has an opening for the material picking needle of the first needle-punching assembly (45) to extend out. The second side of the main material picking plate (43) and the second side of the secondary material picking plate (49) are provided with a second cover plate (51) for attaching the material to be picked. The second cover plate (51) has an opening for the material picking needle of the second needle-punching assembly (46) to extend out.

9. The intelligent shoe tongue sewing device according to claim 1, characterized in that: The sewing workbench (1) is equipped with a feeding device that moves back and forth between the feeding area (1a) and the sewing area (1b). The feeding device includes a pressing drive cylinder that drives the pressing plate to move up and down, a pushing drive cylinder that drives the pressing plate to move back and forth, and a rodless cylinder that drives the pressing plate to move horizontally between the feeding area (1a) and the sewing area (1b).

Images