A self-positioning correction bound book binding apparatus

Abstract

The application discloses a self-positioning correction bound book binding equipment, and aims at the problems of low manual positioning accuracy, poor adaptability and low binding efficiency of existing equipment, and is mainly composed of a binding table, a fixing frame, a lifting pressing plate, a lifting hydraulic cylinder, a non-self-locking ball screw, a rotating sleeve, an oval disc, an arc-shaped connecting rod, three positioning assemblies, a binding hydraulic cylinder and an adjustable distance adjusting block, and the core is that the non-self-locking ball screw is used to realize linkage of pressing and positioning: after the lifting pressing plate presses the bound book, the ball screw continues to descend to drive the rotating sleeve to rotate, the positioning assembly is automatically moved to the bound book through the oval disc and the arc-shaped connecting rod to drive, and three-way automatic positioning correction is completed; the elastic structure of the positioning assembly can be self-adapted to bound books of different sizes, and the distance adjusting block can flexibly adjust the binding position, so that the equipment does not need manual intervention positioning, and the binding accuracy, consistency and efficiency are greatly improved, and the equipment is suitable for various specifications of bound books.

Description

Technical Field

[0001] This invention relates to the field of binding equipment technology, and more particularly to a self-positioning and correcting binding device for bound volumes. Background Technology

[0002] In office work, it is often necessary to bind vouchers, invoices, documents and other documents into bound volumes. Existing binding equipment usually uses a simple clamping mechanism to fix the bound volumes to be bound, and then the binding position is determined by manual positioning or a simple limiting device.

[0003] However, existing binding equipment usually relies on manual adjustment of the position of the bound books, which is not only inefficient but also difficult to guarantee positioning accuracy. The quality of products bound by different operators varies. Furthermore, for bound books of different sizes and specifications, existing equipment often lacks an effective adaptive adjustment mechanism, requiring frequent manual adjustment of the stop positions, which is cumbersome. Due to the aforementioned problems with positioning accuracy and adaptability, operators need to make repeated adjustments, which significantly reduces binding efficiency. Therefore, there is an urgent need to provide a binding equipment for bound books that can achieve automatic positioning correction in order to solve the technical problems of insufficient positioning accuracy, poor adaptability, poor coordination between pressing and positioning, and low binding efficiency in the existing technology. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that existing binding equipment has insufficient positioning accuracy, poor adaptability, poor coordination between pressing and positioning, and low binding efficiency. To this end, we propose a self-positioning correction binding equipment for bound books.

[0005] To achieve the above objectives, this application adopts the following technical solution: a self-positioning and correcting binding device for bound books, comprising a binding table, characterized in that: a fixed frame is provided above the binding table, both the binding table and the fixed frame are fixed to the machine body, a lifting pressure plate is provided below the fixed frame, a lifting guide rod is fixedly connected above the lifting pressure plate, the lifting guide rod is slidably connected to the fixed frame through a sliding sleeve, a lifting hydraulic cylinder is fixedly installed on the fixed frame, the axis of the lifting hydraulic cylinder is parallel to the lifting guide rod, a ball screw is fixedly connected below the lifting hydraulic cylinder, a rotating sleeve is rotatably connected above the lifting pressure plate, a screw nut is fixedly connected to the upper end of the rotating sleeve, and the ball screw passes through the screw nut and the rotating sleeve, and the ball screw... The ball screw and lead screw nut are engaged in a transmission mechanism; two sets of parallel positioning grooves are provided on the front and left and right sides of the rotating sleeve, all pointing towards the rotating sleeve, and positioning components are slidably connected within the positioning grooves; an elliptical disk is fixedly connected to the bottom of the rotating sleeve, and an arc-shaped connecting rod is rotatably connected to the elliptical disk, with the other end of the arc-shaped connecting rod rotatably connected to the positioning component; a row of binding holes is arranged side by side at the rear of the binding table, into which binding rivets are inserted, and a binding hydraulic cylinder is provided at the bottom of the binding holes; an adjustment stop is provided on the outside of the binding holes, and positioning plates are fixedly connected to both sides of the binding table, with positioning grooves on the positioning plates, through which positioning bolts pass, and the positioning bolts are fixedly connected to the adjustment stop.

[0006] Furthermore, the positioning component includes a sliding column, which is slidably connected to the positioning groove. A telescopic lever is slidably connected through the sliding column. A first spring is provided between the top of the telescopic lever and the top of the inner cavity of the sliding column. A fixing block is fixedly connected to one side of the sliding column. A threaded rod is fixedly connected to the fixing block. A triangular block is movably connected through the threaded rod. The other end of the arc-shaped connecting rod is rotatably connected to the triangular block.

[0007] Furthermore, a limiting groove is provided on one side of the sliding column, and a limiting bolt is fixedly connected to one side of the telescopic lever. The limiting bolt passes through the limiting groove, and the projection of the lever groove is consistent with that of the limiting groove. During binding, the front end of the telescopic lever is inserted into the lever groove.

[0008] Furthermore, a nut is fixedly connected to the end of the threaded rod by a thread, and a second spring is provided on the outer sleeve of the threaded rod, with the second spring located between the triangular block and the nut.

[0009] Furthermore, the arc-shaped connecting rods on the left and right sides of the elliptical disk are connected to the minor axis of the elliptical disk, and the arc-shaped connecting rod in front is connected to the major axis of the elliptical disk.

[0010] Furthermore, the length of the positioning groove in front of the rotating sleeve is greater than the length of the positioning grooves on the left and right sides.

[0011] Furthermore, the ball screw is a non-self-locking type ball screw. When the lifting pressure plate descends to the point where it can no longer descend after pressing the stapled part, the lifting hydraulic cylinder continues to drive the ball screw to descend, and drives the rotating sleeve to rotate through the transmission cooperation with the screw nut.

[0012] Furthermore, the triangular block has a smooth through hole for the threaded rod to pass through, and the triangular block and the threaded rod form an axial sliding fit through the through hole; the second spring is a compression spring, and its two ends abut against the end face of the triangular block and the end face of the nut respectively; rotating the nut can move along the axial direction of the threaded rod to adjust the pre-compression of the second spring.

[0013] Furthermore, the positioning groove is a long strip-shaped through groove extending along the front-to-back direction of the binding table; the screw part of the positioning bolt passes through the positioning groove and is threadedly connected to the end face of the adjusting stop strip, and the head of the positioning bolt is pressed against the side of the positioning piece away from the adjusting stop strip; the bottom surface of the adjusting stop strip slides in contact with the table surface of the binding table.

[0014] Furthermore, a lever groove is provided on the binding table, and the projection of the lever groove and the positioning slide groove on the binding table are consistent.

[0015] The technical effects and advantages of this invention are as follows: 1. By setting up a linkage mechanism between the lifting pressure plate and the rotating sleeve, after the lifting pressure plate clamps the bound book, the continued movement of the ball screw drives the rotating sleeve to rotate through the screw nut. This, in turn, drives the positioning component to automatically move towards the bound book through the elliptical disk and the arc-shaped connecting rod, achieving automatic positioning and correction of the bound book without manual intervention, significantly improving positioning accuracy and consistency. 2. Because independent positioning components are provided at the front and on both sides of the rotating sleeve, and these components are elastically connected through triangular blocks and a second spring, the positioning components in each direction can independently move to the appropriate position and clamp the bound books of different sizes during positioning, achieving adaptive adjustment for bound books of different specifications.

[0016] 3. This invention cleverly utilizes the non-self-locking characteristic of ball screws to organically combine the pressing action and the positioning action into a continuous motion process. After the lifting pressure plate descends to press and bind the book, the ball screw continues to descend and automatically triggers the positioning component to move. The whole process is highly automated and greatly improves binding efficiency. Attached Figure Description

[0017] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0018] Figure 1 This is a schematic diagram of the binding table and lifting pressure plate structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the present invention; Figure 3This is a schematic diagram of the lifting hydraulic cylinder and rotating sleeve structure of the present invention; Figure 4 This is a schematic diagram of the elliptical disk and arc-shaped connecting rod structure of the present invention; Figure 5 This is a schematic diagram of the positioning component structure of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the positioning component structure of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the binding table structure of the present invention; Figure 8 This is a schematic diagram of the binding hole and binding hydraulic cylinder structure of the present invention.

[0019] Legend: 1. Binding table; 2. Fixing frame; 3. Lifting pressure plate; 4. Lifting guide rod; 5. Lifting hydraulic cylinder; 6. Ball screw; 7. Rotating sleeve; 8. Screw nut; 9. Positioning groove; 10. Positioning assembly; 1001. Sliding column; 1002. Telescopic lever; 1003. First spring; 1004. Limiting groove; 1005. Limiting bolt; 1006. Fixing block; 1007. Threaded rod; 1008. Triangular block; 1009. Ram's horn nut; 1010. Second spring; 11. Elliptical disc; 12. Arc-shaped connecting rod; 13. Binding hole; 14. Binding rivet; 15. Binding hydraulic cylinder; 16. Adjustable stop bar; 17. Positioning piece; 18. Positioning groove; 19. Positioning bolt; 20. Lever groove. Detailed Implementation

[0020] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Example 1: Refer to Figures 1 to 8 The present invention provides a self-positioning and correction binding device for bound books, including a binding table 1, a fixed frame 2 disposed above the binding table 1, a lifting pressure plate 3 mounted on the fixed frame 2, and a positioning and correction mechanism cooperating with the lifting pressure plate 3.

[0022] Specifically, the binding table 1 is fixedly installed on the machine body to support the bound books to be bound. A fixed frame 2 is provided above the binding table 1, which is also fixedly installed on the machine body to support and guide the lifting plate 3. The lifting plate 3 is provided below the fixed frame 2, and a lifting guide rod 4 is fixedly connected above the lifting plate 3. The lifting guide rod 4 is slidably connected to the fixed frame 2 through a sliding sleeve, so that the lifting plate 3 can only move up and down in the vertical direction to ensure the accuracy of the movement.

[0023] A lifting hydraulic cylinder 5 is fixedly installed on the fixed frame 2. The axis of the lifting hydraulic cylinder 5 is parallel to the lifting guide rod 4 to ensure that the lifting pressure plate 3 is subjected to uniform force. A ball screw 6 is fixedly connected below the lifting hydraulic cylinder 5. The ball screw 6 is a non-self-locking ball screw. A rotating sleeve 7 is rotatably connected above the lifting pressure plate 3. A screw nut 8 is fixedly connected to the upper end of the rotating sleeve 7. The ball screw 6 passes through the screw nut 8 and the rotating sleeve 7, and the ball screw 6 and the screw nut 8 are in a transmission engagement.

[0024] When the lifting hydraulic cylinder 5 drives the lifting pressure plate 3 to descend, the ball screw 6 descends synchronously with the piston rod of the lifting hydraulic cylinder 5. Since the ball screw 6 and the screw nut 8 are connected by a threaded transmission, when the lifting pressure plate 3 can no longer descend after pressing the staples, the continued descent of the ball screw 6 will drive the screw nut 8 to rotate, which in turn drives the rotating sleeve 7 to rotate.

[0025] Two sets of parallel positioning grooves 9 are provided on the front and left and right sides of the rotating sleeve 7. The positioning grooves 9 all point to the center of the rotating sleeve 7. Positioning components 10 are slidably connected in the positioning grooves 9 for positioning the bound book.

[0026] An elliptical disk 11 is fixedly connected to the bottom of the rotating sleeve 7. An arc-shaped connecting rod 12 is rotatably connected to the elliptical disk 11. The other end of the arc-shaped connecting rod 12 is rotatably connected to the positioning component 10. When the rotating sleeve 7 rotates, the elliptical disk 11 rotates accordingly. The rotation of the elliptical disk 11 is converted into linear motion of the positioning component 10 along the positioning slide 9 through the arc-shaped connecting rod 12, thereby realizing automatic positioning of the bound book.

[0027] A row of binding holes 13 is arranged side by side at the rear of the binding table 1. Binding rivets 14 are inserted into the binding holes 13. A binding hydraulic cylinder 15 is provided at the bottom of the binding holes 13. The binding hydraulic cylinder 15 drives the binding rivets 14 to move upward, and after passing through the bound book, the riveting and binding are completed.

[0028] An adjustment stop bar 16 is provided on the outside of the binding hole 13 to limit one side of the bound book. Positioning plates 17 are fixedly connected to both sides of the binding table 1. Positioning grooves 18 are provided on the positioning plates 17. Positioning bolts 19 pass through the positioning grooves 18. The positioning bolts 19 are fixedly connected to the adjustment stop bar 16. By loosening the positioning bolts 19, the position of the adjustment stop bar 16 can be adjusted along the direction of the positioning grooves 18 to adapt to the needs of different binding positions.

[0029] The binding table 1 is provided with a lever groove 20, which is consistent with the projection of the positioning slide 9 on the binding table 1, and is used to accommodate the telescopic lever 1002 in the positioning assembly 10.

[0030] During operation, the bound book to be bound is first placed on the binding table 1, and the lifting hydraulic cylinder 5 is activated to drive the lifting pressure plate 3 to descend. After the lifting pressure plate 3 presses the bound book tightly, due to the thickness limitation of the bound book, the lifting pressure plate 3 cannot continue to descend. At this time, the lifting hydraulic cylinder 5 continues to drive the ball screw 6 to descend. The transmission cooperation between the ball screw 6 and the screw nut 8 causes the screw nut 8 to rotate, thereby driving the rotating sleeve 7 to rotate.

[0031] When the rotating sleeve 7 rotates, the elliptical disk 11 at its bottom rotates accordingly. The elliptical disk 11 pulls the positioning component 10 along the positioning slide 9 towards the bound book through the arc-shaped connecting rod 12. The telescopic lever 1002 of the positioning component 10 pushes the bound book towards the adjusting stop bar 16, so that the bound book is tightly attached to the adjusting stop bar 16, thus completing the automatic positioning.

[0032] Since the length and width of different bound volumes may be different, the positioning components 10 on the front and left and right sides do not stop at the same time when pushing the bound volume. The present invention sets up a sliding connection between the triangular block 1008 and the fixed block 1006, and with the elastic action of the second spring 1010, the three sets of positioning components 10 can move independently and clamp the bound volume respectively, so as to achieve adaptive positioning.

[0033] After positioning is completed, the binding hydraulic cylinder 15 is activated to push the binding rivet 14 upward, through the bound book and complete the riveting and binding work.

[0034] Example 2: Based on the above examples, the structure of the positioning component 10 will be described in further detail.

[0035] The positioning component 10 includes a sliding column 1001, which is slidably connected to the positioning groove 9, so that the positioning component 10 can only move along the direction of the positioning groove 9. A telescopic lever 1002 is slidably connected through the sliding column 1001. The telescopic lever 1002 can extend and retract horizontally within the sliding column 1001. A first spring 1003 is provided between the top of the telescopic lever 1002 and the top of the inner cavity of the sliding column 1001. The first spring 1003 provides a restoring force to the telescopic lever 1002, so that it remains in the extended state when there is no external force.

[0036] A fixed block 1006 is fixedly connected to one side of the sliding column 1001. A threaded rod 1007 is fixedly connected to the fixed block 1006. A triangular block 1008 is movably connected through the threaded rod 1007. A smooth through hole is provided on the triangular block 1008 for the threaded rod 1007 to pass through. The triangular block 1008 and the threaded rod 1007 form an axial sliding fit through the through hole. The other end of the arc-shaped connecting rod 12 is rotatably connected to the triangular block 1008.

[0037] The threaded rod 1007 is fixedly connected to a nut 1009 by a thread. A second spring 1010 is sleeved on the threaded rod 1007. The second spring 1010 is located between the triangular block 1008 and the nut 1009. The second spring 1010 is a compression spring, and its two ends abut against the end face of the triangular block 1008 and the end face of the nut 1009, respectively. By rotating the nut 1009, it can move along the axial direction of the threaded rod 1007 to adjust the pre-compression of the second spring 1010, thereby adjusting the clamping force on the bound book.

[0038] Example 3: Based on the above examples, the limiting structure is further described.

[0039] A limiting groove 1004 is provided on one side of the sliding column 1001, and a limiting bolt 1005 is fixedly connected to one side of the telescopic lever 1002. The limiting bolt 1005 passes through the limiting groove 1004, and the length of the limiting groove 1004 limits the stroke of the telescopic lever 1002 to prevent it from extending or retracting excessively.

[0040] The projection of the lever groove 20 is consistent with that of the limiting groove 1004. During binding, the front end of the telescopic lever 1002 is inserted into the lever groove 20. The setting of the lever groove 20 ensures that the telescopic lever 1002 can smoothly push the bound book and at the same time provide effective support for the bound book.

[0041] Example 4: Based on the above examples, the connection method between the elliptical disk 11 and the arc-shaped connecting rod 12 is further described.

[0042] The arc-shaped connecting rods 12 on the left and right sides of the elliptical disk 11 are connected to the short axis of the elliptical disk, and the arc-shaped connecting rod 12 in front is connected to the long axis of the elliptical disk. This asymmetrical connection method allows the positioning components 10 in front and on the left and right sides to have different strokes when the rotating sleeve 7 rotates, so as to better adapt to the positioning needs of different sized bound books.

[0043] Since the front arc-shaped connecting rod 12 is connected to the long shaft, its movement stroke is relatively large. Therefore, the length of the positioning groove 9 in front of the rotating sleeve 7 is greater than the length of the positioning grooves 9 on the left and right sides, so as to match different movement strokes.

[0044] Example 5: Based on the above examples, the specific structure of the positioning groove 18 and the adjusting stop bar 16 is further described.

[0045] The positioning groove 18 is a long strip-shaped through groove extending along the front and back direction of the binding table 1, providing sufficient space for the adjustment of the adjusting stop bar 16. The screw part of the positioning bolt 19 passes through the positioning groove 18 and is threadedly connected to the end face of the adjusting stop bar 16. The head of the positioning bolt 19 is pressed against the side of the positioning piece 17 away from the adjusting stop bar 16. By tightening or loosening the positioning bolt 19, the position of the adjusting stop bar 16 can be fixed or adjusted.

[0046] The bottom surface of the adjusting stop 16 slides in contact with the table surface of the binding table 1 to ensure smooth and stable adjustment, while also ensuring the seal between the adjusting stop 16 and the binding table 1 to prevent foreign objects from entering.

[0047] Example 6: Based on the above examples, the working characteristics of the ball screw 6 are further explained.

[0048] The ball screw 6 is a non-self-locking ball screw, which is the key to realizing the automatic positioning function of the present invention. When the lifting pressure plate 3 descends to the point where it can no longer descend after pressing the stapled book, the lifting hydraulic cylinder 5 continues to drive the ball screw 6 to descend, and drives the rotating sleeve 7 to rotate through the transmission cooperation with the screw nut 8.

[0049] If a self-locking ball screw is used, this linkage function cannot be achieved. However, if a non-self-locking ball screw stops moving after the lifting pressure plate 3 is resisted, its nut part can continue to rotate on the screw, thereby converting linear motion into rotary motion and realizing automatic switching between clamping and positioning.

[0050] In summary, this invention, through the ingenious design of the linkage between the lifting pressure plate 3, the rotating sleeve 7, the elliptical disk 11, the arc-shaped connecting rod 12, and the positioning component 10, and utilizing the non-self-locking characteristic of the ball screw 6, achieves the function of automatically completing position correction while pressing the bound book. Simultaneously, by setting an adjustable spacing stop 16 and a positioning component 10 with elastic clamping function, this invention can adapt to bound books of different sizes and specifications, significantly improving binding accuracy and efficiency.

[0051] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A self-positioning and correcting bound book binding device, comprising a binding table, characterized in that: A fixed frame is provided above the binding table, and both the binding table and the fixed frame are fixed to the machine body. A lifting pressure plate is provided below the fixed frame, and a lifting guide rod is fixedly connected above the lifting pressure plate. The lifting guide rod is slidably connected to the fixed frame through a sliding sleeve. A lifting hydraulic cylinder is fixedly installed on the fixed frame, and the axis of the lifting hydraulic cylinder is parallel to the lifting guide rod. A ball screw is fixedly connected below the lifting hydraulic cylinder. A rotating sleeve is rotatably connected above the lifting pressure plate, and a screw nut is fixedly connected to the upper end of the rotating sleeve. The ball screw passes through the screw nut and the rotating sleeve, and the ball screw and screw nut are in a transmission engagement. The rotating sleeve is located in front of and to the left and right of the screw nut. Two sets of parallel positioning grooves are provided on each side, all pointing towards the rotating sleeve. A positioning component is slidably connected within the positioning groove. An elliptical disk is fixedly connected to the bottom of the rotating sleeve, and an arc-shaped connecting rod is rotatably connected to the elliptical disk. The other end of the arc-shaped connecting rod is rotatably connected to the positioning component. A row of binding holes is arranged side by side at the rear of the binding table. Binding rivets are inserted into the binding holes, and a binding hydraulic cylinder is provided at the bottom of the binding holes. An adjustment stop is provided on the outside of the binding holes. Positioning plates are fixedly connected to both sides of the binding table. Positioning grooves are provided on the positioning plates, and positioning bolts pass through the positioning grooves. The positioning bolts are fixedly connected to the adjustment stop.

2. The self-positioning and correction binding device for bound volumes according to claim 1, characterized in that: The positioning component includes a sliding column, which is slidably connected to a positioning groove. A telescopic lever is slidably connected through the sliding column. A first spring is provided between the top of the telescopic lever and the top of the inner cavity of the sliding column. A fixing block is fixedly connected to one side of the sliding column. A threaded rod is fixedly connected to the fixing block. A triangular block is movably connected through the threaded rod. The other end of the arc-shaped connecting rod is rotatably connected to the triangular block.

3. The self-positioning and correction binding device for bound volumes according to claim 2, characterized in that: A limiting groove is provided on one side of the sliding column, and a limiting bolt is fixedly connected to one side of the telescopic lever, with the limiting bolt passing through the limiting groove.

4. The self-positioning and correction binding device for bound volumes according to claim 2, characterized in that: The end of the threaded rod is fixedly connected to a nut by threads, and a second spring is sleeved on the threaded rod, which is located between the triangular block and the nut.

5. The self-positioning and correction binding device for bound volumes according to claim 1, characterized in that: The arc-shaped connecting rods on the left and right sides of the elliptical disk are connected to the short axis of the elliptical disk, and the arc-shaped connecting rod in front is connected to the long axis of the elliptical disk.

6. The self-positioning and correction binding device for bound volumes according to claim 5, characterized in that: The length of the positioning groove in front of the rotating sleeve is greater than the length of the positioning grooves on the left and right sides.

7. The self-positioning and correction binding device for bound volumes according to claim 1, characterized in that: The ball screw is a non-self-locking type. When the lifting pressure plate descends to the point where it can no longer descend after pressing the stapled part, the lifting hydraulic cylinder continues to drive the ball screw to descend, and drives the rotating sleeve to rotate through the transmission cooperation with the screw nut.

8. The self-positioning and correction binding device for bound volumes according to claim 4, characterized in that: The triangular block has a smooth through hole for the threaded rod to pass through, and the triangular block and the threaded rod form an axial sliding fit through the through hole; the second spring is a compression spring, and its two ends abut against the end face of the triangular block and the end face of the nut respectively; rotating the nut can move along the axial direction of the threaded rod to adjust the pre-compression of the second spring.

9. The self-positioning and correction binding device for bound volumes according to claim 1, characterized in that: The positioning groove is a long, narrow through groove extending along the front-to-back direction of the binding table; the screw of the positioning bolt passes through the positioning groove and is threaded to the end face of the adjusting stop bar, and the head of the positioning bolt is pressed against the side of the positioning piece away from the adjusting stop bar; the bottom surface of the adjusting stop bar is in sliding contact with the table surface of the binding table.

10. The self-positioning and correction binding device for bound volumes according to claim 2, characterized in that: The binding table is provided with a lever groove, and the projection of the lever groove and the positioning slide groove on the binding table are consistent. During binding, the front end of the telescopic lever is inserted into the lever groove.

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