Variable-proportion adjusting tongue plate mechanism and using method thereof

Abstract

The invention discloses a variable-proportion adjusting lingual plate mechanism and a using method thereof, and belongs to the technical field of sewing equipment.The lingual plate mechanism comprises a mounting plate and adjusting plates symmetrically arranged on the mounting plate, a plurality of symmetrically-distributed sliding mechanisms are rotationally connected between the mounting plate and the adjusting plates, and a synchronizing mechanism is arranged on the mounting plate; the synchronizing mechanism is connected with a plurality of sliding mechanisms, the adjusting plate is in sliding connection with the mounting plate through the sliding mechanisms, the adjusting plate is further connected with a driving mechanism arranged on the mounting plate, and a tongue plate assembly is arranged on the adjusting plate. Determining the required width and length of the tongue plate according to the size of the sewn pocket; the synchronizing mechanism is started to adjust the angle of the sliding mechanism, so that the sliding mechanism rotates to a proper angle relative to the adjusting plate and the mounting plate; the driving mechanism is started, the driving rod drives the adjusting plate to move, the adjusting plate stretches out and draws back through guiding of the sliding mechanism, and the first tongue plate and the second tongue plate are unfolded or folded and gradually matched with the size of the pocket.

Description

Technical Field

[0001] This invention relates to a tongue plate adjustment mechanism for a bag-applying device, and more specifically, to a tongue plate mechanism with variable proportional adjustment and its method of use. Background Technology

[0002] Patchwork machines are commonly used for pocket sewing. When sewing pockets, a flap is typically used to press and position the pocket fabric. However, existing patchwork machines often only have a single flap size. When sewing pockets of different sizes, a different flap size must be used, which significantly reduces sewing efficiency and increases labor costs. Currently, there is no good solution in the industry to address the pain point of not being able to flexibly adjust the flap size.

[0003] For example, Chinese Patent Publication No. CN222557215U, published on March 4, 2025, entitled "A Tongue Plate Telescopic Device and a Pocket Sealing Machine," discloses a tongue plate adjustment mechanism for a pocket sealing machine. This mechanism includes a tongue plate with a guide plate, and movable pressure plates one and two on the guide plate. A driving component is also provided on the tongue plate to move the pressure plates closer together or further apart. The driving component of this tongue plate telescopic device first opens the pressure plates one and two, then places pocket fabric on them. After the pocket fabric undergoes its first fold, the driving component then retracts the pressure plates one and two, leaving space for the inner pressure frame to fold the three sides of the pocket fabric again, effectively adapting to various sewing processes. However, the size adjustment of this tongue plate mechanism is limited, and it no longer meets the requirements for sewing pockets of various sizes. Summary of the Invention

[0004] This invention overcomes the problem that existing patching equipment cannot effectively change the tongue size or has limited size adjustment, and provides a variable-proportion adjustable tongue mechanism. This solution can quickly adjust the tongue size of the patching equipment, and the adjustment range of the tongue size is large and flexible, ensuring the production efficiency of pocket sewing. In addition, a method for using the variable-proportion adjustable tongue mechanism is also provided. This method is simple to operate, automates the adjustment of the tongue, and has a rapid adjustment effect.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a variable-proportion adjustable tongue plate mechanism, comprising a mounting plate and an adjusting plate symmetrically arranged on the mounting plate. A plurality of symmetrically distributed sliding mechanisms are rotatably connected between the mounting plate and the adjusting plate. A synchronization mechanism is provided on the mounting plate, connecting the sliding mechanisms. The adjusting plate and the mounting plate are slidably connected via the sliding mechanisms. A driving mechanism is also connected to the adjusting plate and mounted on the mounting plate. A tongue plate assembly is provided on the adjusting plate. In this solution, the sliding mechanisms between the mounting plate and the adjusting plate are rotated and adjusted by the synchronization mechanism. When the angle of the sliding mechanism changes, the angle of movement of the adjusting plate relative to the mounting plate also changes, thereby changing the length-width adjustment ratio of the tongue plate assembly, realizing variable-proportion adjustment of the tongue plate assembly; significantly improving the adjustment range and flexibility of the tongue plate assembly.

[0006] Preferably, the synchronization mechanism includes a first driving device and several synchronous pulleys. The synchronous pulleys are connected by a synchronous belt, and the shafts of the synchronous pulleys are fixedly connected to the sliding mechanism. The synchronous pulleys, connected by the synchronous belt, achieve synchronous rotation. The synchronous movement of the synchronous pulleys drives the sliding mechanism to rotate synchronously at the same angle. Different angles can be adjusted to achieve different proportional dimensions of the tongue plate assembly.

[0007] Preferably, the sliding mechanism includes a first sliding part and a second sliding part, the first sliding part and the second sliding part being slidably connected, the first sliding part being connected to the synchronization mechanism, and the second sliding part being rotatably connected to the adjusting plate. The first sliding part and the second sliding part are a slide rail and slider structure; one of the first sliding part and the other is a slide rail. The rotation of the sliding mechanism can change the sliding angle between the mounting plate and the adjusting plate, thereby realizing the adjustment of tongue plate assemblies with different proportional sizes.

[0008] Preferably, the driving mechanism includes a base plate, a second driving device, and a driving rod. The base plate is fixedly connected to the mounting plate and located in the middle of the adjusting plate. The second driving device is disposed on the base plate. The driving rod is slidably connected to the base plate and the mounting plate, and is adjustablely connected to the adjusting plates on both sides of the base plate. The output end of the second driving device is connected to the driving rod. The second driving device drives the driving rod to move, and the driving rod drives the adjusting plates on both sides of the base plate to move, so that the adjusting plates can be displaced in both the lateral and longitudinal directions.

[0009] Preferably, a sliding block is provided between the drive rod and the adjusting plate, and the sliding block is slidably connected to the adjusting plate along a direction perpendicular to the movement direction of the adjusting plate. By sliding the sliding block laterally on the adjusting plate, the forward and backward movement of the drive rod can be converted into the lateral movement of the adjusting plate, while also achieving the original forward and backward movement effect.

[0010] Preferably, the adjusting plate has a waist hole, and the sliding block is a rolling element rotatably connected to the drive rod. The sliding block can slide within the waist hole on the adjusting plate, thereby causing the sliding block to move laterally along the tongue plate mechanism, adjusting the lateral dimension of the tongue plate assembly. The sliding block is rotatably connected to the drive rod. When the sliding block moves within the waist hole, it will roll, thereby reducing the motion resistance between the sliding block and the adjusting plate, making the adjusting plate easier to adjust.

[0011] Preferably, the tongue assembly includes a first tongue and a second tongue arranged in an overlapping manner. The first tongue and the second tongue are respectively connected to the adjusting plate, and a magnetic attraction part is provided between the first tongue and the second tongue. The first tongue and the second tongue are used to press the folded part of the pocket fabric to ensure that the pocket is more flat during sewing and improve the sewing quality of the pocket; the magnetic attraction part between the first tongue and the second tongue allows the first tongue and the second tongue to be attracted together to form a whole, improving the pressing and positioning effect of the tongue on the pocket fabric.

[0012] Preferably, the tongue assembly is further provided with a positioning pressure plate. The positioning pressure plate can position the opening edge of the pocket to ensure that the pocket is not sewn crooked.

[0013] A method for using a variable-proportion adjustable tongue mechanism, implemented using the aforementioned variable-proportion adjustable tongue mechanism, includes the following steps: S1: Determine the required width and length of the tongue according to the size of the sewn pocket; S2: Activate the synchronization mechanism to adjust the angle of the sliding mechanism, so that the sliding mechanism rotates to a suitable angle relative to the adjusting plate and the mounting plate; S3: Activate the drive mechanism, so that the drive rod drives the adjusting plate to move, and the adjusting plate performs telescopic movement through the guide of the sliding mechanism, so that the first tongue and the second tongue unfold or close and gradually adapt to the pocket size.

[0014] Preferably, the sliding mechanisms located on different adjustment plates rotate in opposite directions, while the sliding mechanisms located on the same adjustment plate rotate in the same direction and at the same angle.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention can realize the variable ratio adjustment of the tongue plate assembly of the bag-sticking device. For the same style of bag of different sizes, it is not necessary to change the tongue plate. For different styles of bags of different sizes of the same type, it is also not necessary to change the tongue plate; (2) The present invention has a simple structure and a relatively simple method of use. The design cost is low and it is easy for staff to operate; (3) The design of motor, gear rack, pulley belt realizes stepless adjustment of size. The ratio adjustment range of the length-to-width ratio of the bag is 0.7 to 1.5. Attached Figure Description

[0016] Figure 1 This is an isometric view of the present invention.

[0017] Figure 2 This is a top view of the present invention.

[0018] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0019] Figure 4 This is a schematic diagram of the connection structure of the sliding mechanism of the present invention.

[0020] Figure 5 This is a top-view cross-sectional view of the sliding mechanism position of the present invention.

[0021] In the diagram: 1. Mounting plate, 2. Adjusting plate, 2.1. First adjusting plate, 2.2. Second adjusting plate, 3. Sliding mechanism, 3.1. First sliding part, 3.2. Second sliding part, 4. Synchronization mechanism, 4.1. First driving device, 4.2. Synchronous pulley, 4.3. Synchronous belt, 4.4. Driving pulley, 4.5. Reversing pulley, 4.6. Rotating shaft, 5. Tongue plate assembly, 5.1. First tongue plate, 5.2. Second tongue plate, 5.3. Magnetic suction part, 6. Driving mechanism, 6.1. Base plate, 6.2. Second driving device, 6.3. Driving rod, 6.4. Driving gear, 6.5. Rack, 7. Sliding block, 8. Slot, 9. Waist hole, 10. Positioning pressure plate. Detailed Implementation

[0022] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0023] Example 1: As Figures 1 to 5 The illustrated variable-proportion adjustable tongue mechanism includes a mounting plate 1 and an adjusting plate 2, and a sliding mechanism 3 arranged between the mounting plate 1 and the adjusting plate 2. The adjusting plate 2 can slide relative to the mounting plate 1 through the sliding mechanism 3. The mounting plate 1 has one set of adjusting plates, and the adjusting plates 2 have two sets, symmetrically arranged at the bottom of the mounting plate 1. Figure 2 As shown, this embodiment defines Figure 2 The vertical direction shown is the first direction, defined as follows: Figure 2 The left and right directions shown are the second direction, and the first and second directions are perpendicular. The length direction of the two sets of adjusting plates 2 is arranged along the first direction. When the adjusting plate 2 slides relative to the mounting plate 1 along the sliding mechanism 3, the adjusting plate 2 can generate displacement in both the first and second directions simultaneously.

[0024] Specifically, a synchronization mechanism 4 is provided on the mounting plate 1, and the synchronization mechanism 4 is arranged on the upper surface of the mounting plate 1. The synchronization mechanism 4 includes a first drive device 4.1 and four synchronous pulleys 4.2. The number of synchronous pulleys 4.2 is the same as the number of sliding mechanisms 3. The four synchronous pulleys 4.2 are rotatably connected to the upper surface of the mounting plate 1, and the four synchronous pulleys 4.2 are connected by a synchronous belt 4.3. The first drive device 4.1 is a rotary motor, which is fixed to the mounting plate 1 by a motor bracket. The output end of the first drive device 4.1 is arranged downwards, and a drive pulley 4.4 is provided at the output end of the first drive device 4.1. Both the drive pulley 4.4 and the synchronous pulleys 4.2 are gear structures, and the synchronous belt 4.3 is a toothed belt. When the first drive device 4.1 is started, the drive wheel 4.4 drives the timing belt 4.2 to move, and the timing belt 4.3 drives the four timing wheels 4.2 to rotate. As a result, the timing wheels 4.2 drive the sliding mechanism 3 to rotate in the horizontal direction, so that the relative sliding angle between the adjusting plate 2 and the mounting plate 1 changes. This allows the displacement ratio of the adjusting plate 2 in the first direction and the second direction to be adjusted, which is also the ratio of the tongue plate assembly 5.

[0025] Furthermore, a reversing wheel 4.5 is also provided on the mounting plate 1. The reversing wheel 4.5 is arranged on the same side of the four synchronous pulleys 4.2, that is, the reversing wheel 4.5 is arranged on the outside of the rectangle formed by the four synchronous pulleys 4.2, and the reversing wheel 4.5 is rotatably connected to the mounting plate 1. After the synchronous belt 4.3 is wound out from the output end of the first drive device 4.1, it passes through two synchronous pulleys 4.2 on the same side of the same adjusting plate 2 in sequence, and then wound around the reversing wheel 4.5. After passing the reversing wheel 4.5, it passes through two synchronous pulleys 4.2 on the other side of the adjusting plate 2 in sequence and returns to the output end of the first drive device 4.1 to form a closed loop. The first drive device 4.1 is arranged close to the location of one adjusting plate 2, which is defined as the first adjusting plate 2.1. The adjusting plate 2 away from the first drive device 4.1 is defined as the second adjusting plate 2.2. The length directions of the first adjusting plate 2.1 and the second adjusting plate 2.2 are parallel, and the reversing wheel 4.5 is also arranged close to the side of the first adjusting plate 2.1. In this embodiment, the synchronous belt 4.3 is a double-sided toothed belt, meaning that both the inner and outer sides of the synchronous belt 4.3 have transmission tooth structures. Specifically, the two synchronous pulleys 4.2 located on one side of the second adjusting plate 2.2 are connected to the toothed structure on the inner side of the synchronous belt 4.3 via a toothed drive. Through the action of the reversing pulley 4.5, the two synchronous pulleys 4.2 located on one side of the first adjusting plate 2.1 are connected to the toothed structure on the outer side of the synchronous belt 4.3 via a toothed drive. In other words, the driving pulley 4.4, the two synchronous pulleys 4.2 located on one side of the first adjusting plate 2.1, and the reversing pulley 4.5 are all connected to the toothed structure on the inner side of the synchronous belt 4.3, and the two synchronous pulleys 4.2 located on one side of the second adjusting plate 2.2 are connected to the toothed structure on the outer side of the synchronous belt 4.3 via a toothed drive. When the synchronous belt 4.3 is driven, the two synchronous pulleys 4.2 on one side of the first adjusting plate 2.1 rotate in opposite directions to the two synchronous pulleys 4.2 on the other side of the second adjusting plate 2.2. That is, the sliding mechanism 3 arranged on the first adjusting plate 2.1 rotates in opposite directions to the sliding mechanism 3 arranged on the second adjusting plate 2.2. In this way, the first adjusting plate 2.1 and the second adjusting plate 2.2 can be controlled to move towards the middle at the same time or to spread out to both sides at the same time, which means that the size adjustment of the tongue plate assembly 5 is realized.

[0026] In this embodiment, on the mounting plate, the two synchronous pulleys on one side of the first adjusting plate are not collinear with the driving pulley of the first driving device, and the driving pulley is positioned outside the line connecting these two synchronous pulleys. This ensures that the two synchronous pulleys on one side of the first adjusting plate can stably mesh with the synchronous belt, preventing inconsistent rotation angles of the sliding mechanisms on both adjusting plates. In this embodiment, by designing the four synchronous pulleys and the synchronous belt as a toothed transmission, the transmission accuracy of the synchronous pulleys is guaranteed, thus ensuring that the rotation angles of the four sliding mechanisms are consistent.

[0027] The first adjusting plate 2.1 and the second adjusting plate 2.2 are symmetrically arranged on both sides of the bottom of the mounting plate 1, and the adjusting plate 2 and the mounting plate 1 maintain a certain distance in the vertical direction. A sliding mechanism 3 is provided between the adjusting plate 2 and the mounting plate 1. The sliding mechanism 3 is arranged at an angle, such that the sliding direction of the sliding mechanism 3 forms a certain angle with the first direction and the second direction. Specifically, two sets of sliding mechanisms 3 are arranged between the first adjusting plate 2.1 and the mounting plate 1, and two sets of sliding mechanisms 3 are also arranged between the second adjusting plate 2.2 and the mounting plate 1. The two sets of sliding mechanisms 3 located on one side of the first adjusting plate 2.1 and the two sets of sliding mechanisms 3 located on one side of the second adjusting plate 2.2 are also symmetrically arranged, and the tilting directions of the two sets of sliding mechanisms 3 located on the first adjusting plate 2.1 and the two sets of sliding mechanisms 3 located on the second adjusting plate 2.2 are opposite. In this embodiment, using... Figure 5 Taking the tilt direction of the sliding mechanism 3 as an example, the sliding mechanism 3 located on the side of the first adjusting plate 2.1 and the sliding mechanism 3 located on the side of the second adjusting plate 2.2 form a figure-eight distribution. When the first adjusting plate 2.1 and the second adjusting plate 2.2 move relative to the mounting plate 1, the first adjusting plate 2.1 and the second adjusting plate 2.2 will move closer to each other or further away from each other in the second direction.

[0028] Further, as shown in the figure, the sliding mechanism 3 includes a first sliding part 3.1 and a second sliding part 3.2. The first sliding part 3.1 can be a slider structure or a slide rail structure, and correspondingly, the second sliding part 3.2 can be a slide rail structure or a slider structure. In this embodiment, the first sliding part 3.1 is a slide rail structure and the second sliding part 3.2 is a slider structure. The first sliding part 3.1 is located on the upper side of the second sliding part 3.2. The top of the first sliding part 3.1 is fixedly connected to the rotating shaft 4.6 of the synchronous wheel 4.2. A bearing is provided on the rotating shaft 4.6 of the synchronous wheel 4.2 and on the mounting plate 1, so that the rotating shaft 4.6 of the synchronous wheel 4.2 can rotate relative to the mounting plate 1. The rotating shaft 4.6 is fixedly connected to the first sliding part 3.1. When the synchronous wheel 4.2 rotates, it drives the rotating shaft 4.6 to rotate, which in turn drives the first sliding part 3.1 to rotate. The second sliding part 3.2 is rotatably connected to the adjusting plate 2 via a support base. Since the first sliding part 3.1 and the second sliding part 3.2 are in sliding cooperation, when the first sliding part 3.1 rotates, the second sliding part 3.2 will also rotate, thereby changing the angle between the sliding mechanism 3 and the first and second directions. Since the tilt angle of the sliding mechanism 3 relative to the first and second directions changes, the displacement ratio of the adjusting plate 2 along the first and second directions changes accordingly, thereby realizing the proportional adjustment of the length and width dimensions of the tongue plate assembly 5.

[0029] A drive mechanism 6 is also provided on the mounting plate 1. The drive mechanism 6 includes a base plate 6.1, a second drive device 6.2, and a drive rod 6.3. The base plate 6.1 is located directly below the mounting plate 1 and is fixed to the mounting plate 1. The second drive device 6.2 is fixedly arranged on the base plate 6.1. A slide rail is provided on the base plate 6.1. The direction of the slide rail is parallel to the length direction of the adjusting plate 2. The drive rod 6.3 is slidably connected to the slide rail. The drive rod 6.3 is a T-shaped rod. The length of one end of the drive rod 6.3 is along a first direction, and the length of the other end of the drive rod 6.3 is along a second direction. In this design, one end of the drive rod 6.3 along the first direction is slidably connected to the slide rail via a slider, and a rack 6.5 structure is fixedly arranged on the drive rod 6.3 in this section. The length direction of the rack 6.5 is arranged along the first direction. The second drive device 6.2 is a rotary motor, and the output end of the second drive device 6.2 is provided with a drive gear 6.4. The drive gear 6.4 meshes with the rack 6.5 on the drive rod 6.3. Thus, when the second drive device 6.2 outputs torque, the drive gear 6.4 drives the rack 6.5 to move along the first direction, thereby driving the drive rod 6.3 to move along the first direction.

[0030] The two ends of the drive rod 6.3 along the second direction are connected to the first adjusting plate 2.1 and the second adjusting plate 2.2 respectively via sliding blocks 7. One section of the drive rod 6.3 along the second direction is located on the upper side of the mounting plate 1, corresponding to the position of the sliding block 7. The mounting plate 1 is provided with a slot 8 along the first direction for the sliding block 7 to pass through, and the sliding block 7 can move along the first direction within the range of the slot 8. The sliding block 7 is a rolling element structure, specifically, the sliding block 7 is a roller. The adjusting plate 2 is provided with a waist hole 9 along the second direction. The sliding block 7 is slidably connected in the waist hole 9, and in the first direction, the waist hole 9 will abut against the sliding block 7. Therefore, when the second driving device 6.2 drives the drive rod 6.3 to move along the first direction, the drive rod 6.3 will drive the first adjusting plate 2.1 and the second adjusting plate 2.2 to move along the first direction through the sliding block 7. At the same time, due to the guiding effect of the sliding mechanism 3, and the fact that the sliding mechanism 3 is at an angle to the first and second directions, the first adjusting plate 2.1 and the second adjusting plate 2.2 will also have partial movements along the second direction. When the angle of the sliding mechanism 3 changes, the displacement ratios of the first adjusting plate 2.1 and the second adjusting plate 2.2 along the first and second directions will also be different, thus enabling variable proportional adjustment of the tongue plate assembly 5.

[0031] Example 2: As Figures 1 to 5 The illustrated variable-proportion adjustable tongue mechanism includes a mounting plate 1 and an adjusting plate 2, and a sliding mechanism 3 arranged between the mounting plate 1 and the adjusting plate 2. The adjusting plate 2 can slide relative to the mounting plate 1 through the sliding mechanism 3. The mounting plate 1 has one set of adjusting plates, and the adjusting plates 2 have two sets, symmetrically arranged at the bottom of the mounting plate 1. Figure 2 As shown, this embodiment defines Figure 2 The vertical direction shown is the first direction, defined as follows: Figure 2 The left and right directions shown are the second direction, and the first and second directions are perpendicular. The length direction of the two sets of adjusting plates 2 is arranged along the first direction. When the adjusting plate 2 slides relative to the mounting plate 1 along the sliding mechanism 3, the adjusting plate 2 can generate displacement in both the first and second directions simultaneously.

[0032] Specifically, a synchronization mechanism 4 is provided on the mounting plate 1, and the synchronization mechanism 4 is arranged on the upper surface of the mounting plate 1. The synchronization mechanism 4 includes a first drive device 4.1 and four synchronous pulleys 4.2. The number of synchronous pulleys 4.2 is the same as the number of sliding mechanisms 3. The four synchronous pulleys 4.2 are rotatably connected to the upper surface of the mounting plate 1, and the four synchronous pulleys 4.2 are connected by a synchronous belt 4.3. The first drive device 4.1 is a rotary motor, which is fixed to the mounting plate 1 by a motor bracket. The output end of the first drive device 4.1 is arranged downwards, and a drive pulley 4.4 is provided at the output end of the first drive device 4.1. Both the drive pulley 4.4 and the synchronous pulleys 4.2 are gear structures, and the synchronous belt 4.3 is a toothed belt. When the first drive device 4.1 is started, the drive wheel 4.4 drives the timing belt 4.2 to move, and the timing belt 4.3 drives the four timing wheels 4.2 to rotate. As a result, the timing wheels 4.2 drive the sliding mechanism 3 to rotate in the horizontal direction, so that the relative sliding angle between the adjusting plate 2 and the mounting plate 1 changes. This allows the displacement ratio of the adjusting plate 2 in the first direction and the second direction to be adjusted, which is also the ratio of the tongue plate assembly 5.

[0033] Furthermore, a reversing wheel 4.5 is also provided on the mounting plate 1. The reversing wheel 4.5 is arranged on the same side of the four synchronous pulleys 4.2, that is, the reversing wheel 4.5 is arranged on the outside of the rectangle formed by the four synchronous pulleys 4.2, and the reversing wheel 4.5 is rotatably connected to the mounting plate 1. After the synchronous belt 4.3 is wound out from the output end of the first drive device 4.1, it passes through two synchronous pulleys 4.2 on the same side of the same adjusting plate 2 in sequence, and then wound around the reversing wheel 4.5. After passing the reversing wheel 4.5, it passes through two synchronous pulleys 4.2 on the other side of the adjusting plate 2 in sequence and returns to the output end of the first drive device 4.1 to form a closed loop. The first drive device 4.1 is arranged close to the location of one adjusting plate 2, which is defined as the first adjusting plate 2.1. The adjusting plate 2 away from the first drive device 4.1 is defined as the second adjusting plate 2.2. The length directions of the first adjusting plate 2.1 and the second adjusting plate 2.2 are parallel, and the reversing wheel 4.5 is also arranged close to the side of the first adjusting plate 2.1. In this embodiment, the synchronous belt 4.3 is a double-sided toothed belt, meaning that both the inner and outer sides of the synchronous belt 4.3 have transmission tooth structures. Specifically, the two synchronous pulleys 4.2 located on one side of the second adjusting plate 2.2 are connected to the toothed structure on the inner side of the synchronous belt 4.3 via a toothed drive. Through the action of the reversing pulley 4.5, the two synchronous pulleys 4.2 located on one side of the first adjusting plate 2.1 are connected to the toothed structure on the outer side of the synchronous belt 4.3 via a toothed drive. In other words, the driving pulley 4.4, the two synchronous pulleys 4.2 located on one side of the first adjusting plate 2.1, and the reversing pulley 4.5 are all connected to the toothed structure on the inner side of the synchronous belt 4.3, and the two synchronous pulleys 4.2 located on one side of the second adjusting plate 2.2 are connected to the toothed structure on the outer side of the synchronous belt 4.3 via a toothed drive. When the synchronous belt 4.3 is driven, the two synchronous pulleys 4.2 on one side of the first adjusting plate 2.1 rotate in opposite directions to the two synchronous pulleys 4.2 on the other side of the second adjusting plate 2.2. That is, the sliding mechanism 3 arranged on the first adjusting plate 2.1 rotates in opposite directions to the sliding mechanism 3 arranged on the second adjusting plate 2.2. In this way, the first adjusting plate 2.1 and the second adjusting plate 2.2 can be controlled to move towards the middle at the same time or to spread out to both sides at the same time, which means that the size adjustment of the tongue plate assembly 5 is realized.

[0034] In this embodiment, on the mounting plate, the two synchronous pulleys on one side of the first adjusting plate are not collinear with the driving pulley of the first driving device, and the driving pulley is positioned outside the line connecting these two synchronous pulleys. This ensures that the two synchronous pulleys on one side of the first adjusting plate can stably mesh with the synchronous belt, preventing inconsistent rotation angles of the sliding mechanisms on both adjusting plates. In this embodiment, by designing the four synchronous pulleys and the synchronous belt as a toothed transmission, the transmission accuracy of the synchronous pulleys is guaranteed, thus ensuring that the rotation angles of the four sliding mechanisms are consistent.

[0035] The first adjusting plate 2.1 and the second adjusting plate 2.2 are symmetrically arranged on both sides of the bottom of the mounting plate 1, and the adjusting plate 2 and the mounting plate 1 maintain a certain distance in the vertical direction. A sliding mechanism 3 is provided between the adjusting plate 2 and the mounting plate 1. The sliding mechanism 3 is arranged at an angle, such that the sliding direction of the sliding mechanism 3 forms a certain angle with the first direction and the second direction. Specifically, two sets of sliding mechanisms 3 are arranged between the first adjusting plate 2.1 and the mounting plate 1, and two sets of sliding mechanisms 3 are also arranged between the second adjusting plate 2.2 and the mounting plate 1. The two sets of sliding mechanisms 3 located on one side of the first adjusting plate 2.1 and the two sets of sliding mechanisms 3 located on one side of the second adjusting plate 2.2 are also symmetrically arranged, and the tilting directions of the two sets of sliding mechanisms 3 located on the first adjusting plate 2.1 and the two sets of sliding mechanisms 3 located on the second adjusting plate 2.2 are opposite. In this embodiment, using... Figure 5 Taking the tilt direction of the sliding mechanism 3 as an example, the sliding mechanism 3 located on the side of the first adjusting plate 2.1 and the sliding mechanism 3 located on the side of the second adjusting plate 2.2 form a figure-eight distribution. When the first adjusting plate 2.1 and the second adjusting plate 2.2 move relative to the mounting plate 1, the first adjusting plate 2.1 and the second adjusting plate 2.2 will move closer to each other or further away from each other in the second direction.

[0036] Further, as shown in the figure, the sliding mechanism 3 includes a first sliding part 3.1 and a second sliding part 3.2. The first sliding part 3.1 can be a slider structure or a slide rail structure, and correspondingly, the second sliding part 3.2 can be a slide rail structure or a slider structure. In this embodiment, the first sliding part 3.1 is a slide rail structure and the second sliding part 3.2 is a slider structure. The first sliding part 3.1 is located on the upper side of the second sliding part 3.2. The top of the first sliding part 3.1 is fixedly connected to the rotating shaft 4.6 of the synchronous wheel 4.2. A bearing is provided on the rotating shaft 4.6 of the synchronous wheel 4.2 and on the mounting plate 1, so that the rotating shaft 4.6 of the synchronous wheel 4.2 can rotate relative to the mounting plate 1. The rotating shaft 4.6 is fixedly connected to the first sliding part 3.1. When the synchronous wheel 4.2 rotates, it drives the rotating shaft 4.6 to rotate, which in turn drives the first sliding part 3.1 to rotate. The second sliding part 3.2 is rotatably connected to the adjusting plate 2 via a support base. Since the first sliding part 3.1 and the second sliding part 3.2 are in sliding cooperation, when the first sliding part 3.1 rotates, the second sliding part 3.2 will also rotate, thereby changing the angle between the sliding mechanism 3 and the first and second directions. Since the tilt angle of the sliding mechanism 3 relative to the first and second directions changes, the displacement ratio of the adjusting plate 2 along the first and second directions changes accordingly, thereby realizing the proportional adjustment of the length and width dimensions of the tongue plate assembly 5.

[0037] A drive mechanism 6 is also provided on the mounting plate 1. The drive mechanism 6 includes a base plate 6.1, a second drive device 6.2, and a drive rod 6.3. The base plate 6.1 is located directly below the mounting plate 1 and is fixed to the mounting plate 1. The second drive device 6.2 is fixedly arranged on the base plate 6.1. A slide rail is provided on the base plate 6.1. The direction of the slide rail is parallel to the length direction of the adjusting plate 2. The drive rod 6.3 is slidably connected to the slide rail. The drive rod 6.3 is a T-shaped rod. The length of one end of the drive rod 6.3 is along a first direction, and the length of the other end of the drive rod 6.3 is along a second direction. In this design, one end of the drive rod 6.3 along the first direction is slidably connected to the slide rail via a slider, and a rack 6.5 structure is fixedly arranged on the drive rod 6.3 in this section. The length direction of the rack 6.5 is arranged along the first direction. The second drive device 6.2 is a rotary motor, and the output end of the second drive device 6.2 is provided with a drive gear 6.4. The drive gear 6.4 meshes with the rack 6.5 on the drive rod 6.3. Thus, when the second drive device 6.2 outputs torque, the drive gear 6.4 drives the rack 6.5 to move along the first direction, thereby driving the drive rod 6.3 to move along the first direction.

[0038] The two ends of the drive rod 6.3 along the second direction are connected to the first adjusting plate 2.1 and the second adjusting plate 2.2 respectively via sliding blocks 7. One section of the drive rod 6.3 along the second direction is located on the upper side of the mounting plate 1, corresponding to the position of the sliding block 7. The mounting plate 1 is provided with a slot 8 along the first direction for the sliding block 7 to pass through, and the sliding block 7 can move along the first direction within the range of the slot 8. The sliding block 7 is a rolling element structure, specifically, the sliding block 7 is a roller. The adjusting plate 2 is provided with a waist hole 9 along the second direction. The sliding block 7 is slidably connected in the waist hole 9, and in the first direction, the waist hole 9 will abut against the sliding block 7. Therefore, when the second driving device 6.2 drives the drive rod 6.3 to move along the first direction, the drive rod 6.3 will drive the first adjusting plate 2.1 and the second adjusting plate 2.2 to move along the first direction through the sliding block 7. At the same time, due to the guiding effect of the sliding mechanism 3, and the fact that the sliding mechanism 3 is at an angle to the first and second directions, the first adjusting plate 2.1 and the second adjusting plate 2.2 will also have partial movements along the second direction. When the angle of the sliding mechanism 3 changes, the displacement ratios of the first adjusting plate 2.1 and the second adjusting plate 2.2 along the first and second directions will also be different, thus enabling variable proportional adjustment of the tongue plate assembly 5.

[0039] The tongue plate assembly 5 includes at least two tongue plates. In this embodiment, the tongue plate assembly 5 includes a first tongue plate 5.1 and a second tongue plate 5.2. The first tongue plate 5.1 and the second tongue plate 5.2 are fixedly connected to the first adjusting plate 2.1 and the second adjusting plate 2.2, respectively. The portions of the first tongue plate 5.1 and the second tongue plate 5.2 that are close to each other overlap. The overlapping portion of the first tongue plate 5.1 and the second tongue plate 5.2 is relatively thin, while the thickness on both sides is relatively thick, so that the first tongue plate 5.1 and the second tongue plate 5.2 can form a flat surface even when they overlap. Furthermore, when the first adjusting plate 2.1 and the second adjusting plate 2.2 drive the first tongue plate 5.1 and the second tongue plate 5.2 to move, the first tongue plate 5.1 and the second tongue plate 5.2 always have overlapping portions. A magnetic attraction part 5.3 is also provided between the overlapping parts of the first tongue plate 5.1 and the second tongue plate 5.2. The magnetic attraction part 5.3 is a circular thin sheet magnet structure. The magnetic attraction part 5.3 is fixedly arranged on the first tongue plate 5.1 or the second tongue plate 5.2, which can attract the overlapping parts of the first tongue plate 5.1 and the second tongue plate 5.2 together, so as to avoid the thickness of the two tongue plates changing during the movement, which would affect the pressing and positioning effect of the tongue plates.

[0040] When the tilt angle of the sliding mechanism 3 changes, the displacement ratio of the first adjusting plate 2.1 and the second adjusting plate 2.2 along the first direction and the second direction will also change, thereby changing the motion displacement ratio of the first tongue plate 5.1 and the second tongue plate 5.2 in the first direction and the second direction. That is, the scaling ratio of the overall width and length of the tongue plate assembly formed by the first tongue plate 5.1 and the second tongue plate 5.2 can be changed, thus realizing the variable proportional adjustment of the size of the tongue plate assembly 5.

[0041] Furthermore, a positioning pressure plate 10 is provided on the base plate 6.1 and the tongue plate assembly 5. One end of the positioning pressure plate 10 is fixedly connected to the base plate 6.1, and the other end of the positioning pressure plate 10 overlaps the upper surface of the tongue plate assembly 5. The positioning pressure plate 10 can position the opening edge of the pocket to ensure that the pocket is not sewn crooked.

[0042] Example 3: A method of using a variable-proportion adjustable tongue mechanism, implemented using a variable-proportion adjustable tongue mechanism from Example 1 or Example 2. This example uses a variable-proportion adjustable tongue mechanism from Example 2 for illustration.

[0043] The method of using a variable proportional adjustment tongue plate mechanism includes the following steps.

[0044] First, determine the length-to-width ratio of the required flap assembly based on the size of the pocket fabric to be sewn. Then, activate the first drive device 4.1 in the synchronization mechanism 4. The first drive device 4.1 drives the synchronization wheel 4.2 to rotate, which in turn drives the sliding mechanism 3 to rotate, so that the sliding mechanism 3 rotates to a suitable position in the length direction. After determining the arrangement angle of the sliding mechanism 3, close the synchronization mechanism 4, and then activate the second drive device 6.2 in the drive mechanism 6. The second drive device 6.2 drives the drive rod 6.3 to move in the first direction. The drive rod 6.3 pushes the first adjusting plate 2.1 and the second adjusting plate 2.2 on both sides to move in the first direction. At the same time, under the action of the waist hole 9 on the adjusting plate 2 and the inclined sliding mechanism 3, the first adjusting plate 2.1 and the second adjusting plate 2.2 will also move in the second direction. At this time, the first flap 5.1 and the second flap 5.2 on the flap assembly 5 gradually expand or contract to be close to the size of the pocket fabric. If the size of the tongue assembly 5 differs significantly from the size of the pocket fabric, the drive mechanism 6 is turned off, the synchronization mechanism 4 is restarted, and the angle of the sliding mechanism 3 is further adjusted until the size of the tongue assembly 5 matches the size of the pocket fabric.

Claims

1. A variable-ratio adjusting tongue mechanism, characterized by, The device includes a mounting plate and an adjusting plate symmetrically arranged on the mounting plate. A plurality of symmetrically distributed sliding mechanisms are rotatably connected between the mounting plate and the adjusting plate. A synchronization mechanism is provided on the mounting plate, and the synchronization mechanism is connected to the plurality of the sliding mechanisms. The adjusting plate and the mounting plate are slidably connected through the sliding mechanisms. A driving mechanism is also connected to the adjusting plate and is provided on the mounting plate. A tongue plate assembly is provided on the adjusting plate.

2. The tongue plate mechanism with variable proportional adjustment according to claim 1, characterized in that, The synchronization mechanism includes a first driving device and several synchronization pulleys, which are connected by a synchronization belt, and the shaft of the synchronization pulley is fixedly connected to the sliding mechanism.

3. The tongue plate mechanism with variable proportional adjustment according to claim 1, characterized in that, The sliding mechanism includes a first sliding part and a second sliding part, the first sliding part and the second sliding part are slidably connected, the first sliding part is connected to the synchronization mechanism, and the second sliding part is rotatably connected to the adjustment plate.

4. The tongue plate mechanism with variable proportional adjustment according to claim 1, characterized in that, The driving mechanism includes The base plate is fixedly connected to the mounting plate and is located in the middle of the adjustment plate; The second driving device is disposed on the base plate; The drive rod is slidably connected to the base plate and the mounting plate, and is adjustablely connected to the adjustment plates on both sides of the base plate; The output end of the second drive device is connected to the drive rod.

5. The tongue plate mechanism with variable proportional adjustment according to claim 4, characterized in that, A sliding block is provided between the drive rod and the adjustment plate, and the sliding block is slidably connected to the adjustment plate along a direction perpendicular to the movement direction of the adjustment plate.

6. The tongue plate mechanism with variable proportional adjustment according to claim 5, characterized in that, The adjustment plate is provided with a waist hole, the sliding block is a rolling element, and the sliding block is rotatably connected to the drive rod.

7. A variable proportional adjustment tongue plate mechanism according to any one of claims 1 to 6, characterized in that, The tongue plate assembly includes a first tongue plate and a second tongue plate arranged in an overlapping manner. The first tongue plate and the second tongue plate are respectively connected to the adjustment plate, and a magnetic attraction part is also provided between the first tongue plate and the second tongue plate.

8. The tongue plate mechanism with variable proportional adjustment according to claim 7, characterized in that, The tongue plate assembly is also provided with a positioning pressure plate.

9. A method of using a tongue plate mechanism with variable proportional adjustment, characterized in that, The implementation using the variable proportional adjustment tongue plate mechanism according to any one of claims 1 to 8 includes the following steps: S1: Determine the required width and length of the flap based on the dimensions of the sewn pocket; S2: Activate the synchronization mechanism to adjust the angle of the sliding mechanism, so that the sliding mechanism rotates to a suitable angle relative to the adjusting plate and the mounting plate; S3: Start the drive mechanism, so that the drive rod drives the adjustment plate to move. The adjustment plate moves in extension and retraction through the guide of the sliding mechanism, so that the first tongue and the second tongue unfold or close and gradually adapt to the pocket size.

10. The method of using the variable proportional adjustment tongue plate mechanism according to claim 9, characterized in that, The sliding mechanisms located on different adjustment plates rotate in opposite directions, while the sliding mechanisms located on the same adjustment plate rotate in the same direction and at the same angle.

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