Square opening synchronous belt driving and positioning mechanism

Abstract

The invention relates to a square opening synchronous belt driving and positioning mechanism, which is characterized in that an L-shaped left and right positioning synchronous belt is driven by a left and right positioning driving motor, and is guided by a flat substrate and a guide wheel to form a pair of parallel belt bodies through L-shaped bending, and the pair of parallel belt bodies is fixedly connected with a left and right positioning synchronous belt clamping device respectively; the left positioning sheet and the right positioning sheet can be driven by the L-shaped left and right positioning synchronous belt to synchronously move towards each other or back to back, and are used for positioning the short edge position of the square opening part of the pocket; the concave front-back positioning synchronous belt is driven by a front-back positioning driving motor and is guided by a flat substrate and a guide wheel to form two pairs of parallel and symmetrical belt bodies through concave bending, and one of the two pairs of parallel and symmetrical belt bodies is fixedly connected with one of the front-back positioning synchronous belt clamping devices through each of the two pairs of parallel and symmetrical belt bodies; the front positioning piece and the rear positioning piece can be driven by the front positioning synchronous belt and the rear positioning synchronous belt which are arranged in a concave mode to synchronously move in the same direction or back to back and are used for positioning the long edge position of a square opening of a pocket.

Description

Technical Field

[0001] This invention relates to an automatic sewing device, and more particularly to a square-mouth synchronous belt drive positioning mechanism, belonging to the technical field of patching machine. Background Technology

[0002] Traditionally, garment pocket opening is a manual process, which is complex, involving more than a dozen steps, including sewing the top and bottom pocket flaps, cutting the pocket opening, hemming and stitching, positioning the pocket flap width, sewing the left and right pocket lips, sewing the top and bottom pocket linings, and finally stitching. Previously, most of the actions of pocket opening machines were accomplished using multiple cylinders for pushing and pulling, with some actions using stepper motors and screws for multi-directional hemming positioning. Because the fabric pulling and hemming actions and sequences are numerous, many cylinders, screws, and motors are needed, resulting in a large number of parts and complexity. The processing requires high precision in parallelism, perpendicularity, gloss, and fit, making assembly difficult and leading to frequent malfunctions, especially when adjusting and modifying garment pockets of multiple sizes.

[0003] In garment pocket opening processes, the positioning action is a crucial pre-processing step before the fabric spreading process. Its core objective is to precisely fix the bag fabric (including pre-opened square fabric samples) in the preset processing position, ensuring the folding accuracy of subsequent left-right and front-back fabric spreading actions, ultimately guaranteeing consistent pocket opening size, neat edges, and compliant positioning. The technical background of this action is closely related to the automation development of garment pocket opening processes, the demand for processing precision, and the pain points of traditional processes. Current technologies often use cylinders for pushing and pulling to complete this positioning action, while some use stepper motors with screws. These methods also suffer from numerous complex parts, high precision requirements, frequent malfunctions, and difficulties in adjusting and modifying multiple specifications. Summary of the Invention

[0004] This invention aims to provide a square-mouth synchronous belt drive positioning mechanism. Utilizing the principle of reciprocating bidirectional motion of the synchronous belt, it drives the synchronous belt to perform arbitrary reciprocating bidirectional positioning through the inner and outer clamping blocks and clamping plates of the synchronous belt. This solves the problem of setting various specifications for bag opening length and width, while reducing processing accuracy and assembly requirements, and also reducing the failure rate.

[0005] The present invention adopts the following technical solution:

[0006] A rectangular synchronous belt drive positioning mechanism includes a left-right positioning drive mechanism and a front-back positioning drive mechanism mounted on a flat base plate I. The left-right positioning drive mechanism includes a left-right positioning drive motor A1, an L-shaped left-right positioning synchronous belt A2, a left-right positioning synchronous belt clamping device, a left positioning piece A9, and a right positioning piece A10. The L-shaped left-right positioning synchronous belt A2 is driven by the left-right positioning drive motor A1 and, guided by the flat base plate I and guide wheels, undergoes an L-shaped bend to form a pair of parallel belt bodies. Each of the pair of parallel belt bodies is fixedly connected to a left-right positioning synchronous belt clamping device. The left positioning piece A9 and the right positioning piece A10, driven by the L-shaped left-right positioning synchronous belt A2, can move synchronously towards or away from each other within the rectangular opening of the flat base plate I. Positioning of the short side of the square opening of the pocket; the front and rear positioning drive mechanism includes a front and rear positioning drive motor B1, a concave front and rear positioning synchronous belt B2, a front and rear positioning synchronous belt clamping device, a front positioning piece B8, and a rear positioning piece B9; the concave front and rear positioning synchronous belt B2 is driven by the front and rear positioning drive motor B1, and under the guidance of the flat base plate I and the guide wheel, it is formed by concave bending to form two pairs of parallel and symmetrical belt bodies. Each of the two pairs of parallel and symmetrical belt bodies fixes one of the belt bodies to a front and rear positioning synchronous belt clamping device; the front positioning piece B8 and the rear positioning piece B9 can move synchronously in opposite directions or back to back within the front and rear square openings of the flat base plate I under the drive of the concave front and rear positioning synchronous belt B2, for positioning of the long side of the square opening of the pocket.

[0007] Preferably, one of the left and right positioning synchronous belt clamping devices extends vertically to a left positioning drive arm A7, and a left positioning piece A9 is vertically connected to the left positioning drive arm A7; the other left and right positioning synchronous belt clamping device extends parallel to a right positioning transmission rod A6, and a right positioning drive arm A8 is vertically connected to the right positioning drive arm A8, and a right positioning piece A10 is vertically connected to the right positioning drive arm A8.

[0008] Furthermore, the left and right positioning drive mechanism also includes a timing belt clamp A4, a timing belt clamp A11, a guide rail A12, and a slider A13; the timing belt clamp A4 and the timing belt clamp A11 clamp the belt body together with fasteners, the timing belt clamp A4 is fixed to the slider A13, and the slider A13 slides with the guide rail A12; one timing belt clamp A4 extends to connect to one of the left positioning drive arms A7, and the other timing belt clamp A4 extends to connect to another of the right positioning drive arms A8.

[0009] Furthermore, the left positioning piece A9 is vertically fixedly connected to the left positioning drive arm A7 and guided within the rectangular opening of the substrate; the right positioning piece A10 is vertically fixedly connected to the right positioning drive arm A8 and guided within the rectangular opening of the substrate.

[0010] Furthermore, the slide rail A1 has two independently coaxially arranged rails.

[0011] Preferably, the concave-shaped front and rear positioning synchronous belt B2 is driven by a front and rear positioning drive motor B1, and forms two pairs of parallel symmetrical belt bodies through concave bending under the guidance of guide wheels; each of the two pairs of parallel symmetrical belt bodies fixes one belt body to a front and rear positioning synchronous belt clamping device, and fixes the other belt body to a front and rear positioning synchronous belt clamping device; the front and rear positioning synchronous belt clamping devices corresponding to the outer belt bodies of the two pairs of parallel symmetrical belt bodies of the concave-shaped front and rear positioning synchronous belt B2 extend a front positioning pull arm B12, and the front positioning pull arm B12 is fixedly connected to both ends of the front positioning piece B8; the front and rear positioning synchronous belt clamping devices corresponding to the outer belt bodies of the two pairs of parallel symmetrical belt bodies of the concave-shaped front and rear positioning synchronous belt B2 extend a rear positioning pull arm B11, and the rear positioning pull arm B11 is fixedly connected to both ends of the rear positioning piece B9; the front positioning piece B8 and the rear positioning piece B9 are parallel to each other and can move synchronously towards or away from each other.

[0012] Furthermore, the front positioning arm B12 and the corresponding rear positioning arm B11 are slidably engaged by two pairs of parallel slide rails on the flat base plate I.

[0013] Preferably, the left synchronous belt clamp A4 is higher than the right synchronous belt transmission rod A6, and the two move towards each other or away from each other under the guidance of the guide rail A12 and the slider A13.

[0014] Preferably, the front timing belt clamp B6 is lower than the rear timing belt clamp B4, and the front positioning arm B12 and the corresponding rear positioning arm B11 move parallel to each other or backwards in the left and right guide grooves of the substrate.

[0015] Preferably, the guide wheels of the left and right positioning synchronous belts A2 and the front and rear positioning synchronous belts B2 are all provided with synchronous wheel bearing cover plates.

[0016] The beneficial effects of this invention are as follows:

[0017] 1) Utilizing the characteristic of a pair of parallel belts moving in opposite directions (the principle of reciprocating bidirectional motion inside and outside the synchronous belt), the synchronous belt is used to realize the reciprocating bidirectional positioning action, driving the clamping block and clamping plate to move together, thereby accurately and synchronously completing the positioning action of the positioning piece in opposite directions on a straight line. Specifically, it is used in the positioning action before the square opening of the bag opening machine to pull the fabric. Compared with the cylinder, screw and other actuators in the existing technology, it has good synchronization, simple control, simple driving process, high accuracy, and the amplitude of the positioning action can be easily adjusted by using a stepper motor.

[0018] 2) The positioning action of the square opening of the bag is fully adaptable to various sizes and widths of the bag opening, solving the problem of setting various specifications of bag opening length and width, and has a high degree of adaptability;

[0019] 3) Compared with existing technologies such as cylinders and screws, it significantly reduces machining accuracy and assembly requirements, and also reduces the failure rate.

[0020] 4) The "L-shaped" layout of the left and right positioning synchronous belts adopts a "single-side drive" method.

[0021] The main considerations are space saving and the shorter length of the short side of the square opening of the pocket, so "single-sided" drive can meet the stability requirements;

[0022] 5) The design of the "concave" layout front and rear positioning synchronous belts cleverly realizes the "dual-side drive" method. This is mainly because the long side of the square opening of the pocket is relatively long, and the "dual-side drive" can drive the front positioning piece and the rear positioning piece to move back and forth stably. Attached Figure Description

[0023] Figure 1 This is a plan view of the pocket fabric pattern.

[0024] Figure 2 This is a three-dimensional diagram showing how the pocket fabric pattern is folded to create the pocket edges.

[0025] Figure 3 This is a planar schematic diagram showing how the pocket fabric pattern is folded to achieve the desired pocket edges.

[0026] Figure 4 This is a schematic diagram of the overall structure of the bag opening machine positioning and folding mechanism equipped with the square-mouth synchronous belt drive positioning mechanism of the present invention (lifting motor in the downward pressing state).

[0027] Figure 5 This is a schematic diagram of the left and right positioning drive mechanism.

[0028] Figure 6 This is a schematic diagram of the left and right positioning drive mechanism (from another perspective).

[0029] Figure 7 This is a schematic diagram of the front and rear positioning drive mechanism.

[0030] Figure 8 This is a schematic diagram of the front and rear positioning drive mechanism (from another perspective).

[0031] Figure 9 This is a top view of the structure of the left and right positioning drive mechanism and the front and rear positioning drive mechanism mounted together on a flat plate.

[0032] Figure 10This is a three-dimensional view of the structure of the left and right positioning drive mechanism and the front and rear positioning drive mechanism mounted together on a flat base plate.

[0033] Figure 11 Is with Figure 10 The corresponding color image.

[0034] In the picture:

[0035] A1. Left and right positioning drive motor; A2. L-shaped layout left and right positioning synchronous belt; A3. Left and right positioning turning synchronous pulley; A4. Left and right positioning synchronous belt drive clamp; A5. Right positioning turning synchronous pulley; A6. Right positioning transmission rod; A7. Left positioning drive arm; A8. Right positioning drive arm; A9. Left positioning plate; A10. Right positioning plate; A11. Synchronous belt clamp; A12. Guide rail (for positioning guidance); A13. Slider; A14. Left and right synchronous pulley bearing cover plate;

[0036] B1. Front and rear positioning drive motor; B2. Concave layout front and rear positioning synchronous belt; B3. Front and rear positioning drive synchronous pulley; B4. Rear positioning synchronous belt clamp; B5. Front and rear turning synchronous pulley; B6. Front positioning synchronous belt clamp; B7. Synchronous belt clamp plate; B8. Front positioning plate; B9. Rear positioning plate; B11. Rear positioning pull arm; B12. Front positioning pull arm; B13. Front and rear synchronous pulley bearing cover plate.

[0037] I. Flat substrate. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] See Figure 1 , Figure 1 A fabric sample is shown with a square opening in the middle. This fabric sample is intended to be used as a pocket for clothing or trousers, and the square opening indicates the opening of the pocket. Therefore, this fabric sample is called a "pocket opening" fabric sample. How the pocket opening is made is prior art and is not the subject of this application.

[0040] See Figures 2-3 , Figure 2 and Figure 3 All of these examples demonstrate folding the fabric sample at the opening inwards from four directions, an action typically performed by the fabric-feeding mechanism on a bag-opening machine. This application primarily explores a method of positioning the fabric sample using a positioning plate before the fabric-feeding action, along with related improvements and innovations.

[0041] The "positioning" action of the positioning plate in existing bag-opening machines is accomplished by using multiple cylinders to push and pull, and in some cases, a stepper motor and screw are used to complete multi-directional pushing, pulling, and folding actions. Because the positioning, fabric pulling, and folding actions and sequences are numerous, a large number of cylinders, screws, and motors are required. This results in a large number of parts and a high degree of complexity. Processing requires high precision in parallelism, perpendicularity, gloss, and fit, making assembly difficult and increasing the likelihood of process failures, especially when adjusting multiple sizes of garment pockets. This embodiment introduces a completely new positioning mechanism, as detailed below:

[0042] First see Figure 4 , Figure 4 The diagram shows the overall structure of the positioning and folding mechanism of the bag opening machine with the square opening synchronous belt drive positioning mechanism installed (lifting motor pressed down). This diagram is only for overall illustration and does not show the core points of this application.

[0043] This embodiment focuses on a part of the positioning and folding mechanism of the bag opening machine. See the appendix for details. Figure 5-11 .

[0044] A square-mouth synchronous belt driven positioning mechanism includes left and right positioning drive mechanisms ( Figure 5-6 ), front and rear positioning drive mechanism ( Figure 7-8 ).

[0045] See Figure 5-6 The left and right positioning drive mechanism includes a left and right positioning drive motor A1, an L-shaped left and right positioning synchronous belt A2, a left and right positioning synchronous belt clamping device, a left positioning piece A9, and a right positioning piece A10. The L-shaped left and right positioning synchronous belt A2 is driven by the left and right positioning drive motor A1 and forms a pair of parallel belt bodies through an L-shaped bend under the guidance of the guide wheel. Each of the pair of parallel belt bodies is fixedly connected to a left and right positioning synchronous belt clamping device. The left positioning piece A9 and the right positioning piece A10 can move synchronously towards or away from each other under the drive of the L-shaped left and right positioning synchronous belt A2, and are used for positioning the short side of the square opening of the pocket.

[0046] The "L-shaped" layout of the left and right positioning synchronous belts adopts a "single-sided drive" method, mainly to save space and because the short side of the square opening of the pocket is relatively short. "Single-sided" drive can meet the stability requirements.

[0047] See Figure 7-8The front and rear positioning drive mechanism includes a front and rear positioning drive motor B1, a concave front and rear positioning synchronous belt B2, a front and rear positioning synchronous belt clamping device, a front positioning piece B8, and a rear positioning piece B9. The concave front and rear positioning synchronous belt B2 is driven by the front and rear positioning drive motor B1 and, guided by the guide wheel, is formed into two pairs of parallel and symmetrical belt bodies through a concave bending. Each pair of parallel and symmetrical belt bodies fixes one of the belt bodies to a front and rear positioning synchronous belt clamping device. The front positioning piece B8 and the rear positioning piece B9 can move synchronously towards or away from each other under the drive of the concave front and rear positioning synchronous belt B2, and are used for positioning the long side of the square opening of the pocket.

[0048] In this embodiment, the guide wheels of the left and right positioning synchronous belts A2 and the front and rear positioning synchronous belts B2 are all provided with synchronous wheel bearing cover plates, namely the left and right synchronous wheel bearing cover plates A14 (e.g., ...). Figure 5-6 ), front and rear synchronous pulley bearing cover plate B13 (such as Figure 7-8 In this embodiment, see Figure 5-6 One of the left and right positioning synchronous belt clamping devices extends vertically to a left positioning drive arm A7, and a left positioning piece A9 is vertically connected to the left positioning drive arm A7; the other left and right positioning synchronous belt clamping device extends parallel to a right positioning transmission rod A6, and a right positioning transmission rod A6 is vertically connected to a right positioning drive arm A8, and a right positioning piece A10 is vertically connected to the right positioning drive arm A8.

[0049] In this embodiment, see continue to see Figure 5-6 The left and right positioning drive mechanism further includes a timing belt clamp A4, a timing belt clamp A11, a guide rail A12, and a slider A13; the timing belt clamp A4 and the timing belt clamp A11 clamp the belt body together with fasteners, the timing belt clamp A4 is fixed to the slider A13, and the slider A13 slides with the guide rail A12; one timing belt clamp A4 extends to connect to one of the left positioning drive arms A7, and the other timing belt clamp A4 extends to connect to another of the right positioning drive arms A8.

[0050] See Figure 6 The left positioning piece A9 is vertically fixedly connected to the left positioning drive arm A7 and guided within the rectangular opening of the substrate; the right positioning piece A10 is vertically fixedly connected to the right positioning drive arm A8 and guided within the rectangular opening of the substrate.

[0051] See Figure 6 The slide rail A1 has two independent coaxially arranged rails.

[0052] See Figure 7-8The concave-shaped front and rear positioning synchronous belt B2 is driven by a front and rear positioning drive motor B1. Guided by guide wheels, it undergoes a concave bending to form two pairs of parallel and symmetrical belt bodies. Each pair of parallel and symmetrical belt bodies fixes one belt body to a front and rear positioning synchronous belt clamping device, and also fixes the other belt body to a front and rear positioning synchronous belt clamping device. The front and rear positioning synchronous belt clamping devices corresponding to the outer sides of the two pairs of parallel and symmetrical belt bodies of the concave-shaped front and rear positioning synchronous belt B2 extend into a front positioning pull arm B12, which is fixedly connected to both ends of the front positioning piece B8. The front and rear positioning pieces B8 and B9 are parallel to each other and can move synchronously towards or away from each other.

[0053] The "concave" layout and the front and rear positioning synchronous belts cleverly achieve a "dual-side drive" method. This is mainly because the long side of the square opening of the pocket is relatively long, and the "dual-side drive" can drive the front and rear positioning plates to move back and forth stably.

[0054] This invention utilizes the characteristic of a pair of parallel belts moving in opposite directions (the principle of reciprocating bidirectional motion of the synchronous belt), using the synchronous belt to achieve reciprocating bidirectional positioning action, driving the clamping block and clamping plate to move together, thereby accurately and synchronously completing the positioning action of the positioning piece in opposite directions along a straight line. Specifically, it is applied to the positioning action before the fabric is pulled out of the square opening of a bag opening machine. Compared with the cylinders, screws, and other actuators in existing technologies, it has better synchronization, simpler control, simpler driving process, and higher precision. Moreover, the amplitude of the positioning action can be easily adjusted using a stepper motor. By adjusting the stepper motor's stride, it can fully adapt to the positioning action of the square opening of bags of various lengths and widths, solving the problem of setting various specifications of bag opening length and width, and has high adaptability. Compared with existing technologies such as cylinders and screws, it significantly reduces processing accuracy and assembly requirements, and also reduces the failure rate.

[0055] In this embodiment, see Figure 7 The front positioning arm B12 and the corresponding rear positioning arm B11 are slidably engaged via a slide rail structure. This slide rail structure is not shown in the attached diagram.

[0056] In summary, this invention uses a motor to drive a synchronous belt, which, combined with multiple synchronous idler pulleys, forms parallel (concave) downward-facing double parallel tie rods that move synchronously in opposite directions. Utilizing the reciprocating bidirectional motion principle of the synchronous belt's inner and outer sides, and through clamping blocks and plates on the inner and outer sides of the synchronous belt, it achieves arbitrary reciprocating forward and backward positioning and yielding functions.

[0057] In conjunction with another motor driving a synchronous belt and multiple synchronous idler pulleys, it forms an L-shaped structure with left and right moving rods moving synchronously in opposite directions. Utilizing the reciprocating bidirectional motion principle of the synchronous belt, the synchronous belt is driven by the inner and outer clamping blocks and clamping plates to move arbitrarily in opposite directions, positioning and yielding functions to form a square opening. It can set the length and width of the bag opening and has bidirectional positioning and yielding functions, solving the problem of setting various specifications of bag opening length and width, while reducing processing accuracy and assembly requirements, and also reducing the failure rate.

[0058] Specifically, combined Figure 10-11 A square working opening is formed at the bottom of the flat substrate I. Two parallel guide grooves are provided on each side of the opening to accommodate the front and rear positioning arms. The front and rear edges of the opening have recessed front and rear positioning slots to accommodate the front and rear positioning pieces. Two more left and right positioning slots extend from the short side of the opening to accommodate the left and right positioning pieces.

[0059] Above the left, right, front, and rear guide grooves on the flat base plate, a reciprocating synchronous belt structure with a U-shaped structure facing downwards and five idler synchronous pulleys is set up via a left and right positioning motor driving the synchronous pulley on the upper right. The synchronous belt extends to the left and right, with inner and outer chain clamps and front and rear synchronous belt clamping blocks driving the front and rear pull arms to drive the front and rear positioning plates for positioning and retraction functions.

[0060] On the upper left side of the flat plate, a similar L-shaped structure with the outer diameter of the synchronous wheel is set up by the left and right positioning motors driving the synchronous wheel and three idler synchronous wheels. The lower side of the L-shape is used as the driving force for the left and right circumferential synchronous belt reciprocating motion. The left and right synchronous belt clamps on the inner and outer sides of the lower side of the L-shape drive the left positioning drive arm, the left positioning plate, the right positioning transmission rod, the right positioning drive arm, and the right positioning plate, forming a reciprocating left and right positioning and retraction function. Together with the front and rear positioning structure, it forms a square-mouth left and right, front and rear arbitrary opposite synchronous reciprocating positioning and retraction mechanism with adjustable size and width.

[0061] The flat base plate I can be configured with a U-shaped downward-facing circumferential synchronous belt reciprocating in opposite directions for positioning and retraction through front and rear drive motors and multiple synchronous pulleys. Combined with the left and right drive motors and multiple synchronous pulleys, the L-shaped lower side is configured to drive the left and right circumferential synchronous belts to reciprocate in opposite directions for positioning and retraction, forming a square-mouthed positioning and retraction mechanism that can be adjusted in size and width for synchronous reciprocating in opposite directions left and right or front and back.

[0062] The above are preferred embodiments of the present invention. Those skilled in the art can make various modifications or improvements based on these embodiments. Without departing from the overall concept of the present invention, such modifications or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. A square mouth synchronous belt drive positioning mechanism, characterized in that: It comprises left and right positioning drive mechanisms, front and rear positioning drive mechanisms introduced on a flat base plate (I); The left and right positioning drive mechanism comprises a left and right positioning drive motor (A1), an L-shaped layout left and right positioning synchronous belt (A2), a left and right positioning synchronous belt clamping device, a left positioning piece (A9) and a right positioning piece (A10); The L-shaped layout left and right positioning synchronous belt (A2) is driven by the left and right positioning drive motor (A1), and forms a pair of parallel belts under the guidance of the flat base plate (I) and the guide wheel after L-shaped bending. Each of the pair of parallel belts is fixedly connected with a left and right positioning synchronous belt clamping device; the left positioning piece (A9) and the right positioning piece (A10) can move synchronously towards or away from each other under the drive of the L-shaped layout left and right positioning synchronous belt (A2), and are used for positioning the short side position of the square opening part of the pocket; The front and rear positioning drive mechanism comprises a front and rear positioning drive motor (B1), a concave layout front and rear positioning synchronous belt (B2), a front and rear positioning synchronous belt clamping device, a front positioning piece (B8) and a rear positioning piece (B9); The concave layout front and rear positioning synchronous belt (B2) is driven by the front and rear positioning drive motor (B1), and forms two pairs of parallel and symmetrical belts under the guidance of the flat base plate (I) and the guide wheel after concave bending. Each of the two pairs of parallel and symmetrical belts is fixedly connected with a front and rear positioning synchronous belt clamping device; the front positioning piece (B8) and the rear positioning piece (B9) can move synchronously towards or away from each other under the drive of the concave layout front and rear positioning synchronous belt (B2), and are used for positioning the long side position of the square opening part of the pocket.

2. The square mouth synchronous belt drive positioning mechanism according to claim 1, characterized in that: One of the left and right positioning synchronous belt clamping devices vertically extends a left positioning drive arm (A7), and the left positioning drive arm (A7) is vertically connected with the left positioning piece (A9); The other left and right positioning synchronous belt clamping device extends a right positioning drive arm (A8) in parallel, and the right positioning drive arm (A8) is vertically connected with the right positioning piece (A10).

3. The square mouth synchronous belt drive positioning mechanism according to claim 2, characterized in that: The left and right positioning drive mechanism further comprises a synchronous belt clamping block (A4), a synchronous belt clamping plate (A11), a guide rail (A12) and a sliding block (A13); The synchronous belt clamping block (A4) and the synchronous belt clamping plate (A11) clamp the belt body by fasteners, the synchronous belt clamping block (A4) is fixed with the sliding block (A13), and the sliding block (A13) is in sliding fit with the sliding rail (A12); One of the synchronous belt clamping blocks (A4) extends to connect the left positioning drive arm (A7), and the other synchronous belt clamping block (A6) extends to connect the right positioning drive arm (A8).

4. The square-cornered synchronous belt drive positioning mechanism of claim 3, wherein: The left positioning piece (A9) is vertically fixedly connected with the left positioning drive arm (A7) and guided into the long square mouth of the base plate; and the right positioning piece (A10) is vertically fixedly connected with the right positioning drive arm (A8) and guided into the long square mouth of the base plate.

5. The square-cornered synchronous belt drive positioning mechanism of claim 3, wherein: The slide rail (A12) is provided with two coaxial parts.

6. The square port synchronous belt drive positioning mechanism of claim 1, wherein: The concave layout front and rear positioning synchronous belt (B2) is driven by a front and rear positioning drive motor (B1) and forms two pairs of parallel and symmetrical belt bodies through concave bending under the guidance of guide wheels; Each of the two pairs of parallel and symmetrical belt bodies is fixedly connected with a front and rear positioning synchronous belt clamping device through one of the belt bodies, and is fixedly connected with the front and rear positioning synchronous belt clamping device through the other belt body; The front and rear positioning synchronous belt clamping device corresponding to the belt body on the inner side of each of the two pairs of parallel and symmetrical belt bodies of the concave layout front and rear positioning synchronous belt (B2) extends a front positioning pull arm (B12), and the front positioning pull arm (B12) is fixedly connected with both ends of the front positioning sheet (B8); The front and rear positioning synchronous belt clamping device corresponding to the belt body on the outer side of each of the two pairs of parallel and symmetrical belt bodies of the concave layout front and rear positioning synchronous belt (B2) extends a rear positioning pull arm (B11), and the rear positioning pull arm (B11) is fixedly connected with both ends of the rear positioning sheet (B9); The front positioning sheet (B8) and the rear positioning sheet (B9) are parallel to each other and can move synchronously towards or away from each other.

7. The square-cornered synchronous belt drive positioning mechanism of claim 6 wherein: The front positioning pull arm (B12) and the rear positioning pull arm (B11) on the corresponding side are slidably connected through two pairs of parallel sliding grooves on the flat base plate I.

8. The square-cornered synchronous belt drive positioning mechanism of claim 1 wherein: The The left synchronous belt clamping block (A4) is higher than the right synchronous belt drive rod (A6), and the two move towards or away from each other under the guidance of the guide rail (A12) and the sliding block (A13).

9. The square-cornered synchronous belt drive positioning mechanism of claim 1 wherein: The The front synchronous belt clamping block (B6) is lower than the rear synchronous belt clamping block (B4), and the front positioning pull arm (B12) and the rear positioning pull arm (B11) on the corresponding side move towards or away from each other in the left and right guide grooves on the base plate.

10. The square-cornered synchronous belt drive positioning mechanism of claim 1 wherein: The guide wheels of the left and right positioning synchronous belt (A2) and the front and rear positioning synchronous belt (B2) are provided with synchronous wheel bearing upper cover plates.

Images