Auxiliary supporting device for a flat bed sewing machine

Abstract

The utility model discloses an auxiliary supporting device for flat sewing machine, including fixed frame and frame, the frame top is equipped with the machine head, the frame front hinged has the auxiliary support board, the frame bottom is equipped with the adjusting part, the auxiliary support board is equipped with the expansion component, the adjusting part includes respectively the adjusting groove of opening in fixed frame top both sides, respectively with the fixed connection of frame bottom both sides moving plate, respectively the sliding slot of opening in adjusting groove bottom both sides, be equipped with the sliding block in the sliding slot and be equipped with the push rod between the sliding block and moving plate, the utility model discloses a fixed frame, frame, machine head, auxiliary support board and adjusting part are set up, have solved the current auxiliary supporting device when using, although can support cloth, but the overall height of flat sewing machine is fixed, is inconvenient according to the height of user to carry out corresponding adjustment to its height, leads to the problem of low application range, thereby leading to the problem of poor practicability.

Description

Technical Field

[0001] This utility model relates to the field of flat sewing machine technology, specifically to an auxiliary support device for a flat sewing machine. Background Technology

[0002] A flatbed sewing machine is an industrial sewing machine that uses two threads, a needle and a shuttle, to form a lockstitch. A flatbed sewing machine consists of a machine head, a worktable, and a frame. It primarily uses a single sewing thread to create a stitch on the fabric, allowing one or more layers of fabric to be interwoven or sewn together.

[0003] Existing patent CN220746251U discloses an auxiliary support device for a flat sewing machine, relating to the field of auxiliary structure technology for flat sewing machines. It includes a flat sewing work plate, an auxiliary support plate on one side of the work plate, a connecting rod fixedly installed at one corner of the auxiliary support plate, a rotating ball fixedly installed at one end of the connecting rod, and a movable connecting seat movably connected to one end of the rotating ball. The advantages of this invention are: the adjustable auxiliary support plate structure on one side of the flat sewing machine provides auxiliary support for the fabric being sewn. The position of the auxiliary support plate can be adjusted according to the size and shape of the fabric, thus supporting the fabric, extending the flat area of ​​the fabric in the flat sewing work area, increasing the support area for the fabric, and reducing the impact of the fabric's own size and weight on the flat sewing area. The auxiliary support plate can be connected to the flat sewing machine using a positioning structure based on its adjustable position.

[0004] Based on the search of the aforementioned patents and in conjunction with the auxiliary support devices in the existing technology, it was found that although the aforementioned auxiliary support devices can support the fabric when in use, the overall height of the flat sewing machine is fixed, making it inconvenient to adjust its height according to the user's height, resulting in a lower range of applicability and thus reduced practicality. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary support device for a flat sewing machine, in order to solve the problem mentioned in the background art that, although the existing auxiliary support devices can support the fabric, the overall height of the flat sewing machine is fixed, making it inconvenient to adjust the height according to the user's height, resulting in a lower range of applicability and thus poor practicality.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary support device for a flat sewing machine, comprising a fixed frame and a machine frame, wherein a machine head is installed on the top of the machine frame, an auxiliary support plate is hinged to the front of the machine frame, an adjustment component is provided at the bottom of the machine frame, and an expansion component is provided on the auxiliary support plate;

[0007] The adjustment component includes adjustment slots respectively opened on both sides of the top of the fixed frame, movable plates respectively fixedly connected to both sides of the bottom of the frame, sliding grooves respectively opened on both sides of the bottom of the adjustment slots, a slider disposed in the sliding groove, a push rod disposed between the slider and the movable plate, a bidirectional screw connected to the slider, and a drive component for rotating the bidirectional screw. The bidirectional screw is screwed to the slider, the bidirectional screw is rotatably connected to the fixed frame, the slider is slidably connected to the sliding groove, and the two ends of the push rod are hinged to the movable plate and the slider respectively.

[0008] Preferably, the expansion component includes an expansion groove on the front of the auxiliary support plate, an expansion plate in the expansion groove, a plurality of slots evenly arranged on one side of the expansion plate, a through opening on one side of the expansion groove, a locking rod in the through opening, a pull plate fixedly connected to one end of the locking rod, and a spring sleeved on the outside of the locking rod. The locking rod is inserted into the slot, the locking rod is slidably connected to the through opening, and the expansion plate is slidably connected to the expansion groove.

[0009] Preferably, the driving component includes a gear fixedly connected to the outside of the bidirectional screw, a toothed belt disposed on the outside of the two gears, and a motor fixedly connected to one end of one of the bidirectional screws, wherein the two gears are connected by a toothed belt drive.

[0010] Preferably, a movable groove is provided on each side of the adjusting groove, and a movable block is slidably connected in the movable groove, and the movable block is fixedly connected to the movable plate.

[0011] Preferably, limiting rods are fixedly connected to both sides of the inner wall of the expansion groove, and limiting grooves are respectively opened on both sides of the back of the expansion plate, with the limiting rods and limiting grooves slidably connected.

[0012] Preferably, a handle is fixedly connected to one side of the expansion plate, and the handle is T-shaped.

[0013] Preferably, a top plate is provided on one side of the bottom of the frame, and the top plate is rotatably connected to the frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting up a fixed frame, machine frame, machine head, auxiliary support plate and adjustment components, the motor can drive the bidirectional screw to rotate, which in turn drives the gear to rotate. Through the toothed belt, it can drive another gear to rotate, which in turn makes the two bidirectional screws rotate, which in turn drives the two moving plates to move vertically, which in turn drives the machine frame to move vertically. The vertical height of the machine frame can be adjusted to make it easier for people of different heights to use the flat sewing machine, which can improve the applicability and greatly improve its practicality.

[0016] 2. By incorporating an expansion component, pulling the pull plate causes the spring to deform, simultaneously disengaging the locking rod from the current slot and releasing the expansion plate. The expansion plate can then be pulled outwards, increasing the usable area of ​​the auxiliary support plate. The spring's return allows the locking rod to engage in the slot, securing the expansion plate and preventing it from resetting. This allows for support of fabrics of different sizes, thereby improving the stability of the flat sewing machine. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram provided for this utility model;

[0018] Figure 2 Front view provided for this utility model;

[0019] Figure 3 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA;

[0020] Figure 4 Provided by this utility model Figure 3 Enlarged view at point D;

[0021] Figure 5 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point BB;

[0022] Figure 6 Provided by this utility model Figure 5 Enlarged view at point E in the middle;

[0023] Figure 7 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point CC.

[0024] In the diagram: 1. Fixed frame; 11. Machine frame; 12. Machine head; 13. Auxiliary support plate; 21. Adjustment groove; 22. Moving plate; 23. Slide groove; 24. Slider; 25. Push rod; 26. Bidirectional screw; 31. Expansion groove; 32. Expansion plate; 33. Slot; 34. Through-hole; 35. Locking rod; 36. Pull plate; 37. Spring; 41. Gear; 42. Toothed belt; 43. Motor; 51. Moving groove; 52. Moving block; 61. Limiting rod; 62. Limiting groove; 71. Handle; 81. Top plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 This utility model provides a technical solution: an auxiliary support device for a flat sewing machine, including a fixed frame 1 and a machine frame 11. A machine head 12 is installed on the top of the machine frame 11, and an auxiliary support plate 13 is hinged to the front of the machine frame 11. An adjustment component is provided at the bottom of the machine frame 11, and an expansion component is provided on the auxiliary support plate 13. The adjustment component includes adjustment grooves 21 respectively opened on both sides of the top of the fixed frame 1, movable plates 22 respectively fixedly connected to both sides of the bottom of the machine frame 11, sliding grooves 23 respectively opened on both sides of the bottom of the adjustment grooves 21, and a sliding groove 23 disposed in the sliding groove 23. The system includes a slider 24, a push rod 25 located between the slider 24 and the movable plate 22, a bidirectional screw 26 connected to the slider 24, and a drive component for rotating the bidirectional screw 26. The bidirectional screw 26 is screwed to the slider 24 and rotatably connected to the fixed frame 1. The slider 24 is slidably connected to the slide groove 23. The two ends of the push rod 25 are hinged to the movable plate 22 and the slider 24, respectively. When the two bidirectional screws 26 rotate, they can drive the two sliders 24 on the left and right sides to move in opposite directions, which in turn can drive the push rod 25 to push the movable plate 22 to move vertically. The two movable plates 22 move synchronously, thereby driving the frame 11 to move vertically. The height of the frame 11 can be adjusted to facilitate the use of the flat sewing machine by people of different heights. The driving components include gears 41 fixedly connected to the outside of the bidirectional screws 26, toothed belts 42 located on the outside of the two gears 41, and motors 43 fixedly connected to one end of one of the bidirectional screws 26. The two gears 41 are connected by a toothed belt 42. The motor 43 can drive the left bidirectional screw 26 to rotate, and through the gears 41 and toothed belts 42, it can drive the right bidirectional screw 26 to rotate, thereby enabling both bidirectional screws 26 to rotate. The rotation of both bidirectional screws 26 can be achieved using a single motor 43, which can reduce the cost of use and maintenance. Movable slots 51 are respectively opened on both sides of the adjusting slot 21. Movable blocks 52 are slidably connected in the movable slots 51. The movable blocks 52 are fixedly connected to the movable plates 22. The vertical movement of the movable plates 22 can drive the movable blocks 52 to move. The movable blocks 52 can improve the vertical movement stability of the movable plates 22 and prevent the movable blocks 52 from shifting horizontally.

[0027] Please see Figure 1 , Figure 5 , Figure 6 as well as Figure 7 The expansion component includes an expansion groove 31 on the front of the auxiliary support plate 13, an expansion plate 32 in the expansion groove 31, a plurality of slots 33 evenly arranged on one side of the expansion plate 32, a through opening 34 on one side of the expansion groove 31, a locking rod 35 in the through opening 34, a pull plate 36 fixedly connected to one end of the locking rod 35, and a spring 37 sleeved on the outside of the locking rod 35. The locking rod 35 is inserted into the slots 33 and slidably connected to the through opening 34. Next, the expansion plate 32 is slidably connected to the expansion groove 31. The two ends of the spring 37 are fixedly connected to the auxiliary support plate 13 and the pull plate 36, respectively. By pulling the pull plate 36, the locking rod 35 can be moved, and the spring 37 deforms accordingly. The locking rod 35 moves away from the current locking groove 33, which can release the expansion plate 32. The expansion plate 32 can move within the expansion groove 31, and the usable area of ​​the auxiliary support plate 13 can be quickly adjusted. When the spring 37 returns to its original position, it can drive the locking rod 35 to engage with the locking groove. Within 33, the adjusted expansion plate 32 can be fixed to prevent it from resetting, thus providing auxiliary support for fabrics of different sizes. Limiting rods 61 are fixedly connected to both sides of the inner wall of the expansion groove 31. Limiting grooves 62 are opened on both sides of the back of the expansion plate 32. The limiting rods 61 and the limiting grooves 62 are slidably connected. When the expansion plate 32 moves, the limiting rods 61 can slide within the limiting grooves 62 to restrict the expansion plate 32 and prevent it from detaching from the expansion groove 31. A handle 71 is fixedly connected to one side of the expansion plate 32. The handle 71 is T-shaped and can be used to easily pull the expansion plate 32 to move it, thus changing the usable area of ​​the auxiliary support plate 13. A top plate 81 is provided on one side of the bottom of the frame 11. The top plate 81 is rotatably connected to the frame 11 and can rotate to support the horizontal auxiliary support plate 13 and prevent it from rotating and resetting.

[0028] Working principle: During operation, when the height of the frame 11 needs to be adjusted, the motor 43 is started. The motor 43 drives the left bidirectional screw 26 to rotate, which in turn drives the gear 41 to rotate. Through the toothed belt 42, the right gear 41 rotates, which in turn drives the right bidirectional screw 26 to rotate. The rotation of the two bidirectional screws 26 drives the two sliders 24 on the left and right sides to move in opposite directions, which in turn drives the push rod 25 to push the moving plate 22 to move. The movement of the two moving plates 22 drives the frame 11 to move vertically, thereby adjusting the vertical height of the frame 11 to facilitate the use of the flat sewing machine by different personnel. When the fabric is large, the auxiliary support plate 13 can be rotated to a horizontal state, and then the top plate 81 can be rotated to the auxiliary support plate 13. The bottom of the auxiliary support plate 13 can be supported to prevent it from rotating and resetting. When the area of ​​the auxiliary support plate 13 is insufficient, the pull plate 36 can be pulled, and the pull rod can drive the locking rod 35 to disengage from the slot 33. At the same time, the spring 37 deforms accordingly. Then, the handle 71 can be pulled to move the expansion plate 32 to a suitable position. The pull plate 36 is released, and the spring 37 resets, driving the locking rod 35 to reset and lock it into the slot 33. This can fix the adjusted expansion plate 32 and prevent it from resetting, thereby increasing the usable area of ​​the auxiliary support plate 13 to support larger fabrics. The above is the working process of the entire device. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary support device for a flat sewing machine, comprising a fixed frame (1) and a machine frame (11), characterized in that: The top of the frame (11) is equipped with a machine head (12), the front of the frame (11) is hinged with an auxiliary support plate (13), the bottom of the frame (11) is provided with an adjustment component, and the auxiliary support plate (13) is provided with an expansion component; The adjustment components include adjustment grooves (21) respectively opened on the top two sides of the fixed frame (1), movable plates (22) respectively fixedly connected to the bottom two sides of the frame (11), sliding grooves (23) respectively opened on the bottom two sides of the adjustment grooves (21), sliders (24) provided in the sliding grooves (23), push rods (25) provided between the sliders (24) and the movable plates (22), bidirectional screws (26) connected to the sliders (24), and driving components for rotating the bidirectional screws (26). The bidirectional screws (26) are screwed to the sliders (24), the bidirectional screws (26) are rotatably connected to the fixed frame (1), the sliders (24) are slidably connected to the sliding grooves (23), and the two ends of the push rods (25) are hinged to the movable plates (22) and the sliders (24) respectively.

2. The auxiliary support device for a flat sewing machine according to claim 1, characterized in that: The expansion component includes an expansion groove (31) on the front of the auxiliary support plate (13), an expansion plate (32) in the expansion groove (31), a plurality of slots (33) evenly arranged on one side of the expansion plate (32), a through opening (34) on one side of the expansion groove (31), a locking rod (35) in the through opening (34), a pull plate (36) fixedly connected to one end of the locking rod (35), and a spring (37) sleeved on the outside of the locking rod (35). The locking rod (35) is inserted into the slot (33), the locking rod (35) is slidably connected to the through opening (34), and the expansion plate (32) is slidably connected to the expansion groove (31).

3. The auxiliary support device for a flat sewing machine according to claim 1, characterized in that: The drive component includes a gear (41) fixedly connected to the outside of the bidirectional screw (26), a toothed belt (42) located on the outside of the two gears (41), and a motor (43) fixedly connected to one end of one of the bidirectional screws (26). The two gears (41) are connected by the toothed belt (42).

4. The auxiliary support device for a flat sewing machine according to claim 1, characterized in that: The adjustment groove (21) has a movable groove (51) on each side. A movable block (52) is slidably connected in the movable groove (51). The movable block (52) is fixedly connected to the movable plate (22).

5. An auxiliary support device for a flat sewing machine according to claim 2, characterized in that: Limiting rods (61) are fixedly connected to both sides of the inner wall of the expansion groove (31), and limiting grooves (62) are opened on both sides of the back of the expansion plate (32). The limiting rods (61) and the limiting grooves (62) are slidably connected.

6. The auxiliary support device for a flat sewing machine according to claim 2, characterized in that: A handle (71) is fixedly connected to one side of the expansion plate (32), and the handle (71) is T-shaped.

7. The auxiliary support device for a flat sewing machine according to claim 1, characterized in that: The frame (11) has a top plate (81) on one side of its bottom, and the top plate (81) is rotatably connected to the frame (11).

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