A POD leather cover automatic positioning machine for hardcover books

Abstract

The present invention relates to the technical field of book production and packaging, and specifically to an automatic positioning machine for POD leather covers for hardcover books, comprising a machine platform, a production line belt is arranged at the top of the machine platform, a lift is arranged at the side of the top of the machine platform, a table is arranged at the driving end of the lift, a stand is arranged at the side of the production line belt, a positioning component is arranged inside the stand, a correction component is arranged inside the positioning component, an adjustment component is arranged inside the correction component, and an alignment component is arranged on the top of the table. Compared with the prior art, the present application sets a positioning component and a correction component for use together, and the positioning component will approach the leather cover as the table is lowered, and a parallelogram structure is formed by a push plate, a seesaw and a fork rod symmetrically arranged on the front of the positioning plate, and the lever principle of the seesaw is used to quickly correct the tilted leather cover, so that the leather cover is placed in the middle of the production line belt, thereby improving the efficiency of positioning and correction.

Description

Technical Field

[0001] The invention relates to the technical field of book production and packaging, in particular to an automatic positioning machine for POD leather covers used for hardcover books. Background Art

[0002] A hardcover book is a type of book binding with a protective hard cover. The outer shell of a hardcover book is usually made of POD leather. The production of POD leather covers needs to be carried out according to user needs, and the leather covers require an automatic positioning machine during the production process to produce according to the preset book size and style.

[0003] In the prior art, a Chinese patent document with publication number CN216805910U proposes a lower shell positioning mechanism in an assembly production line for shell-type packaging products, including a frame, a conveying device, a lower shell loading device, a manual loading device, a shell assembly device and a detection unloading device. The conveying device is provided with a lower shell positioning mechanism, and the lower shell loading device and the detection unloading device are respectively arranged at the starting end and the ending end of the conveying device. A product filling station and an upper shell loading station are sequentially arranged at a position between the manual loading device and the shell assembly device on one side of the conveying device, so as to realize the assembly production of shell-type packaging products and an automated process. The degree is relatively high, and the conveying device is used for product conveying. The lower shell accommodating groove can stably place the product, and the conveying effect is remarkable, which effectively guarantees the assembly quality of the product, improves the assembly efficiency of the product, and saves labor costs. However, the book case needs to go through multiple processes in the production process. The placement position of the book case before assembly may be tilted after multiple processing. Once the position of the book case is tilted, it will affect each subsequent process, and finally lead to the inability to enter the assembly workpiece, resulting in the appearance of defective products. Therefore, the present application provides a POD leather cover automatic positioning machine for hardcover books to meet the requirements of precise correction of the position of the book case. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an automatic positioning machine for POD cover making for hardcover books, so as to solve the problem of position deviation of book covers after multiple processing.

[0005] Based on the above purpose, the present invention provides an automatic positioning machine for POD leather covers for hardcover books, comprising a machine platform, a production line belt is arranged at the top of the machine platform, a lift is arranged at the side of the top of the machine platform, a table is arranged at the driving end of the lift, a stand is arranged at the side of the production line belt, a positioning component is arranged inside the stand, a correction component is arranged inside the positioning component, an adjustment component is arranged inside the correction component, and an alignment component is arranged on the upper part of the table;

[0006] The positioning component is arranged directly below the table, the correction component is used in conjunction with the positioning component, the adjustment component acts on the correction component to adjust the action range of the correction component, and the alignment component acts on the head and tail ends of the leather shell;

[0007] The positioning assembly includes a sleeve sleeved on the outer surface of the platform, the side of the sleeve is fixedly connected to a crossbeam, the lower surface of the crossbeam is hinged with a push rod, the end of the push rod away from the crossbeam is hinged with a positioning plate, the upper side of the platform is fixedly connected to a positioning seat, the middle of the positioning seat is movably interspersed with a center rod, the top of the sleeve is fixedly connected to the lower surface of the platform, the positioning plates are provided with two and are symmetrically arranged on both sides of the assembly line belt, and the end of the center rod is fixedly connected to the side of the positioning plate away from the assembly line belt;

[0008] The correction assembly includes a seesaw inserted in the middle of the center rod, both ends of the seesaw are movably provided with fork rods, one end of the fork rod away from the seesaw is rotatably connected with a threaded cylinder, one end of the threaded cylinder away from the fork rod is provided with a push plate, the threaded cylinder is movably inserted in the middle of the positioning plate, the middle part of the seesaw is rotatably connected to the inside of the center rod, a slider is provided at the fork of the end of the fork rod, a slide groove is penetrated through the end of the seesaw, and the slider is clamped in the inside of the slide groove;

[0009] The adjusting assembly includes a double pulley rotatably connected to the side of the positioning plate, a knob is fixedly connected to the middle of the double pulley, a belt is sleeved on the outer surface of the double pulley, the double pulley is connected to a single pulley through belt meshing, the single pulley is sleeved and fixed on the outer surface of the threaded cylinder, the internal thread of the threaded cylinder is connected to a threaded rod, one end of the threaded rod extending out of the threaded cylinder is fixedly connected to the side of the push plate, a positioning rod is fixedly connected to the side edge of the push plate, and the positioning rod is movably inserted into the middle of the positioning plate.

[0010] Preferably, the alignment component includes a motor arranged on the upper part of the table, the driving end of the motor is fixedly connected to the driving wheel, the upper part of the table is rotatably connected to the driven wheel, the top edge of the driven wheel is fixedly connected to a cylinder, the outer surface of the cylinder is sleeved with a return plate, and the side of the return plate is fixedly connected to a rack.

[0011] Preferably, a support is provided at the edge of the upper surface of the table plate, a gear is movablely sleeved on the outer surface of the support, an arc-shaped rod is movablely sleeved in the middle part of the outer surface of the support, the arc-shaped rod is fixedly connected to the gear, the gear is meshingly connected to the rack, and a square plate is fixedly connected to the end of the arc-shaped rod away from the support.

[0012] Preferably, a track is fixedly connected to the upper surface of the platform, and both ends of the circular plate slide inside the track.

[0013] Beneficial effects of the present invention:

[0014] 1. This kind of POD leather cover automatic positioning machine for hardcover books is used in conjunction with a positioning component and a correction component. The positioning component will approach the leather cover as the table descends, and the positioning plate will continue to move horizontally toward the leather cover under the limit of the center rod and the drive of the push rod. The push plate, the seesaw and the fork rod symmetrically arranged on the front of the positioning plate form a parallelogram structure. By using the lever principle of the seesaw and the principle of force interaction, when a push plate pushes the inclined part of the leather cover, it will buffer the push and drive the other push plate to approach the leather cover. At this time, the force exerted by the push plate on the leather cover is flexible, which can avoid the damage to the edge of the leather cover caused by direct push positioning. At the same time, the inclined leather cover can be quickly corrected, so that the leather cover is placed in the middle of the assembly line belt, thereby improving the efficiency of positioning correction.

[0015] 2. This kind of POD leather cover automatic positioning machine for hardcover books is equipped with an adjustment component. The adjustment component acts on the correction component. The double pulleys are rotated to drive the single pulleys on both sides to rotate under the transmission of the belt, and then the threaded rod is driven to make a linear motion along the threaded cylinder, so as to achieve the effect of adjusting the distance between the push plate and the positioning plate, which is convenient for adapting to leather covers of different sizes.

[0016] 3. This kind of POD leather cover automatic positioning machine for hardcover books sets the alignment component, uses the motor to drive the active wheel to drive the driven wheels on both sides to rotate, and then uses the periodic rotation of the cylinder around the driven wheel to drive the return plate to make a straight reciprocating motion, which can push the rack and gear to engage and drive the gear to rotate, and then drive the arc rod and the square plate to move, and position the leather cover horizontally, so that the leather cover is placed directly under the table, so that the spacing between each leather cover is the same, which is convenient for subsequent processing and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the partial cutaway structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the bench of the present invention;

[0021] Figure 4This is a schematic diagram of the structure of the positioning component of the present invention;

[0022] Figure 5 This is a schematic diagram of the correction component structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the regulating component of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the standard assembly of the present invention;

[0025] Figure 8 It is a schematic diagram of the local structure of the alignment component of the present invention.

[0026] The markings in the figure are:

[0027] 1. Machine; 2. Assembly line belt; 3. Lifter; 4. Table; 5. Rack; 601. Casing; 602. Crossbeam; 603. Push rod; 604. Positioning plate; 605. Positioning seat; 606. Center rod; 701. Rocker; 702. Fork rod; 703. Threaded cylinder; 704. Push plate; 705. Slider; 706. Slide; 801. Knob; 802. Double pulley; 803. Belt; 804. Single pulley; 805. Threaded rod; 806. Positioning rod; 901. Motor; 902. Driving wheel; 903. Driven wheel; 904. Cylinder; 905. Reciprocating plate; 906. Rack; 907. Support; 908. Gear; 909. Arc rod; 910. Square plate; 911. Track. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0029] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] like Figures 1 to 8As shown, the automatic positioning machine for POD leather cover for hardcover books includes a machine platform 1, an assembly line belt 2 is arranged on the top of the machine platform 1, a lift 3 is arranged on the side of the top of the machine platform 1, a table 4 is arranged on the driving end of the lift 3, a stand 5 is arranged on the side of the assembly line belt 2, two groups of stands 5 are arranged and symmetrically arranged on both sides of the assembly line belt 2, a positioning component is arranged inside the stand 5, a correction component is arranged inside the positioning component, an adjustment component is arranged inside the correction component, an alignment component is arranged on the upper part of the table 4, the positioning component is arranged just below the table 4, the correction component is used in conjunction with the positioning component, the adjustment component acts on the correction component to adjust the action range of the correction component, and the alignment component acts on the head and tail ends of the leather cover;

[0031] During the process of the table 4 descending to process the skin, the positioning component and the correction component are used to position and correct the horizontal position of the skin. The correction component operates with the positioning component and uses the lever principle to quickly correct the tilted skin. The adjustment component can adjust the spacing between the correction component and the positioning component to accommodate the correction of skins of more sizes. The spacing of the skins is adjusted by the alignment component so that all the skins have the same spacing to facilitate subsequent processing.

[0032] like Figures 2 to 4 As shown, the positioning assembly includes a sleeve 601 sleeved on the outer surface of the platform 5, the side of the sleeve 601 is fixedly connected to a crossbeam 602, the lower surface of the crossbeam 602 is hinged with a push rod 603, and the end of the push rod 603 away from the crossbeam 602 is hinged with a positioning plate 604, the upper side of the platform 5 is fixedly connected to a positioning seat 605, and the middle part of the positioning seat 605 is movably interspersed with a center rod 606, the top of the sleeve 601 is fixedly connected to the lower surface of the platform 4, the positioning plates 604 are provided with two and are symmetrically arranged on both sides of the assembly line belt 2, the end of the center rod 606 is fixedly connected to the side of the positioning plate 604 away from the assembly line belt 2, the push rod 603 acts on the edge of the positioning plate 604, and the center rod 606 acts on the middle of the positioning plate 604;

[0033] When the elevator 3 drives the table 4 to move downward, it will push the sleeve 601 to slide downward along the platform 5. During the sliding down of the sleeve 601, it will drive the crossbeam 602 to move downward, and then drive the push rod 603 to move. The positioning plate 604 hinged at the other end of the push rod 603 is limited by the positioning seat 605 and the center rod 606, so the positioning plates 604 will be pushed closer to each other during the movement of the push rod 603, and then the skin can be positioned so that the skin is placed in the middle position of the assembly line belt 2.

[0034] like Figure 4 and Figure 5As shown, the correction component includes a seesaw 701 inserted in the middle of the center rod 606, and fork rods 702 are movably provided at both ends of the seesaw 701. The end of the fork rod 702 away from the seesaw 701 is rotatably connected with a threaded cylinder 703, and the end of the threaded cylinder 703 away from the fork rod 702 is provided with a push plate 704. The threaded cylinder 703 is movably inserted in the middle of the positioning plate 604, and the middle part of the seesaw 701 is rotatably connected to the inside of the center rod 606. A slider 705 is provided at the fork of the end of the fork rod 702. A sliding groove 706 is opened through the end of the seesaw 701, and the slider 705 is clamped in the inside of the sliding groove 706. The seesaw 701 will be relatively displaced with the fork rod 702 during the tilting process. At this time, the sliding of the slider 705 in the sliding groove 706 can play the effect of limiting the seesaw 701.

[0035] When the positioning plate 604 approaches the skin shell, the push plate 704 will first contact the edge of the skin shell. If the skin shell is in an inclined state, the push plate 704 on one side will abut the inclined part of the skin shell. As the positioning plate 604 continues to advance, the push plate 704 that first contacts the skin shell will push the skin shell to rotate. At the same time, under the action of the interaction force, this push plate 704 will push the fork rod 702 to drive the rocker 701 to deflect. At this time, the force exerted by the push plate 704 on the skin shell is flexible, which can avoid the damage to the edge of the skin shell caused by direct push positioning. The other end of the rocker 701 will push the fork rod 702 to drive the push plate 704 to approach the skin shell, thereby achieving the effect of correcting the skin shell, and the lever principle is combined with the synchronous action of the two push plates 704 to improve the efficiency of positioning correction.

[0036] like Figure 5 and Figure 6 As shown, the adjustment component includes a double pulley 802 rotatably connected to the side of the positioning plate 604, a knob 801 is fixedly connected to the middle of the double pulley 802, a belt 803 is sleeved on the outer surface of the double pulley 802, and the double pulley 802 is meshedly connected with a single pulley 804 through the belt 803, the single pulley 804 is sleeved and fixed on the outer surface of the threaded cylinder 703, and the single pulleys 804 on both sides are staggered, the internal thread of the threaded cylinder 703 is connected with a threaded rod 805, and one end of the threaded rod 805 extending out of the threaded cylinder 703 is fixedly connected to the side of the push plate 704, and a positioning rod 806 is fixedly connected to the side edge of the push plate 704, and the positioning rod 806 is movably inserted in the middle of the positioning plate 604, and the positioning rod 806 is used to limit the push plate 704 to ensure that the push plate 704 cannot rotate during the movement of the threaded rod 805 and can only make a linear motion;

[0037] The double pulley 802 is driven to rotate by turning the knob 801, and the double pulley 802 drives the single pulley 804 to rotate through the belt 803. During the rotation of the single pulley 804, the threaded cylinder 703 is driven to rotate synchronously, and then the threaded rod 805 is driven to move linearly along the threaded cylinder 703, and then the push plate 704 is driven to move, thereby achieving the effect of adjusting the distance between the push plate 704 and the positioning plate 604, so as to adapt to leather shells of different sizes.

[0038] like Figure 7 and Figure 8 As shown, the alignment component includes a motor 901 arranged on the upper part of the table 4, the driving end of the motor 901 is fixedly connected to the driving wheel 902, the upper part of the table 4 is rotatably connected to the driven wheel 903, the top edge of the driven wheel 903 is fixedly connected to a cylinder 904, the outer surface of the cylinder 904 is sleeved with a return plate 905, the side of the return plate 905 is fixedly connected with a rack 906, a support 907 is provided at the edge of the upper surface of the table 4, the outer surface of the support 907 is movably sleeved with a gear 908, the middle part of the outer surface of the support 907 is movably sleeved with an arc rod 909, the arc rod 909 is fixedly connected to the gear 908, the gear 908 is meshed with the rack 906, the end of the arc rod 909 away from the support 907 is fixedly connected to a square plate 910, the upper surface of the table 4 is fixedly connected to a track 911, and both ends of the return plate 905 slide inside the track 911;

[0039] When the motor 901 drives the active wheel 902 to rotate, it will also drive the driven wheel 903 to rotate. During the rotation of the driven wheel 903, it will drive the cylinder 904 to rotate around the center point of the driven wheel 903. While moving, the cylinder 904 will slide in the return plate 905 and push the return plate 905 to move along the track 911. During the movement, the return plate 905 will push the rack 906 to move. Since the rack 906 is meshed with the gear 908, the gear 908 will be driven to rotate during the movement of the rack 906. The gear 908 and the arc rod 909 are both arranged on the support 907, and the rotation of the gear 908 will drive the arc rod 909 to rotate around the support 907. During the rotation of the arc rod 909, the square plate 910 will be driven to move and the skin shell will be positioned horizontally, so that the skin shell is placed directly below the table 4, so that the spacing between each skin shell is the same, which is convenient for subsequent processing and improves production efficiency.

[0040] The technical solution provided by the present invention is to drive the lifting of the table 4 by the lift 3. When the table 4 descends to process the skin, the positioning component and the correction component are used to correct the horizontal position of the skin. The correction component operates with the positioning component and uses the lever principle to quickly correct the tilted skin. The adjustment component can adjust the spacing between the correction component and the positioning component to accommodate the correction of skins of more sizes. The spacing of the skins is adjusted by the alignment component so that the spacing of all the skins is the same, which is convenient for subsequent processing. Specifically, when the lift 3 drives the table 4 to move downward, it will push the sleeve The tube 601 slides downward along the stand 5. The crossbeam 602 is driven downward during the downward movement of the sleeve 601, and then the push rod 603 is driven to move. The positioning plate 604 hinged at the other end of the push rod 603 is limited by the positioning seat 605 and the center rod 606. Therefore, the positioning plates 604 are pushed closer to each other during the movement of the push rod 603, so the skin can be positioned. At the same time, two push plates 704 are symmetrically distributed around the center of the positioning plate 604. The two push plates 704 are both inserted through the threaded tube 703 and arranged at the front end of the positioning plate 604. When the positioning plate 604 approaches the skin, the push plate 604 is pushed closer to the skin. The push plate 704 will first contact the edge of the leather shell. If the leather shell is in an inclined state, the push plate 704 on one side will abut against the inclined part of the leather shell. As the positioning plate 604 continues to advance, the push plate 704 that first contacts the leather shell will push the leather shell to rotate. At the same time, under the action of the interaction force, this push plate 704 will push the fork rod 702 to drive the rocker 701 to deflect. At this time, the force exerted by the push plate 704 on the leather shell is flexible, which can avoid the damage to the edge of the leather shell caused by direct pushing and positioning. The other end of the rocker 701 will push the fork rod 702 to drive the push plate 704 to get close to the leather shell, thereby achieving the purpose of positioning the leather shell. The effect of correcting the shell is achieved by using the lever principle combined with the synchronous action of the two push plates 704, which improves the efficiency of positioning correction. For shells of different sizes, the double pulley 802 can be driven to rotate by turning the knob 801, and the double pulley 802 drives the single pulley 804 to rotate through the belt 803. During the rotation of the single pulley 804, the threaded cylinder 703 will be driven to rotate synchronously, and then the threaded rod 805 will be driven to move linearly along the threaded cylinder 703, and then the push plate 704 will be driven to move, so as to achieve the effect of adjusting the distance between the push plate 704 and the positioning plate 604, so as to adapt to shells of different sizes;

[0041] The motor 901 drives the driving wheel 902 to rotate. When the driving wheel 902 rotates, it drives the driven wheel 903 to rotate. When the driven wheel 903 rotates, it drives the cylinder 904 to rotate around the center point of the driven wheel 903. When the cylinder 904 moves, it slides in the return plate 905 and pushes the return plate 905 to move along the track 911. When the return plate 905 moves, it pushes the rack 906 to move. Since the rack 906 is meshed with the gear 908, the gear 908 is driven to rotate during the movement of the rack 906. The gear 908 and the arc rod 909 are all arranged on the support 907, and the rotation of the gear 908 will drive the arc rod 909 to rotate around the support 907. During the rotation of the arc rod 909, the square plate 910 will be driven to move and position the leather shell horizontally, so that the leather shell is placed directly below the table 4, and the spacing between each leather shell is made the same. Since the cylinder 904 on the driven wheel 903 will rotate periodically, the reciprocating motion of the return plate 905 will be realized, so that the square plate 910 can be moved upward and reset after being positioned, which is convenient for subsequent processing and improves production efficiency.

[0042] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0043] Therefore, any omission, modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A POD cover automatic positioning machine for hardcover books, characterized in that: include: A machine (1), wherein a production line belt (2) is arranged at the top of the machine (1), a lift (3) is arranged at the side of the top of the machine (1), a table (4) is arranged at the driving end of the lift (3), a stand (5) is arranged at the side of the production line belt (2), a positioning component is arranged inside the stand (5), a correction component is arranged inside the positioning component, an adjustment component is arranged inside the correction component, and an alignment component is arranged on the upper part of the table (4); The positioning component is arranged directly below the table (4); the correction component is used in conjunction with the positioning component; the adjustment component acts on the correction component to adjust the action range of the correction component; and the alignment component acts on the head and tail ends of the leather shell; The positioning assembly comprises a sleeve (601) sleeved on the outer surface of the platform (5), the side of the sleeve (601) is fixedly connected to a crossbeam (602), the lower surface of the crossbeam (602) is hinged with a push rod (603), the end of the push rod (603) away from the crossbeam (602) is hinged with a positioning plate (604), the upper side of the platform (5) is fixedly connected to a positioning seat (605), the middle part of the positioning seat (605) is movably interspersed with a center rod (606), the top end of the sleeve (601) is fixedly connected to the lower surface of the platform (4), the positioning plates (604) are provided with two and are symmetrically arranged on both sides of the assembly line belt (2), and the end of the center rod (606) is fixedly connected to the side of the positioning plate (604) away from the assembly line belt (2); The correction component comprises a seesaw (701) inserted in the middle of the center rod (606), fork rods (702) are movably provided at both ends of the seesaw (701), one end of the fork rod (702) away from the seesaw (701) is rotatably connected to a threaded cylinder (703), one end of the threaded cylinder (703) away from the fork rod (702) is provided with a push plate (704), the threaded cylinder (703) is movably inserted in the middle of the positioning plate (604), the middle part of the seesaw (701) is rotatably connected to the inside of the center rod (606), a slider (705) is provided at the fork of the end of the fork rod (702), a slide groove (706) is penetrated through the end of the seesaw (701), and the slider (705) is clamped in the inside of the slide groove (706); The adjustment assembly includes a double pulley (802) rotatably connected to the side of the positioning plate (604), a knob (801) is fixedly connected to the middle of the double pulley (802), a belt (803) is sleeved on the outer surface of the double pulley (802), the double pulley (802) is meshedly connected to a single pulley (804) through the belt (803), the single pulley (804) is sleeved and fixed on the outer surface of the threaded cylinder (703), the internal thread of the threaded cylinder (703) is connected to a threaded rod (805), one end of the threaded rod (805) extending out of the threaded cylinder (703) is fixedly connected to the side of the push plate (704), a positioning rod (806) is fixedly connected to the side edge of the push plate (704), and the positioning rod (806) is movably inserted in the middle of the positioning plate (604).

2. The automatic POD cover positioning machine for hardcover books according to claim 1, characterized in that: The alignment component comprises a motor (901) arranged on the upper part of a platform (4), the driving end of the motor (901) is fixedly connected to a driving wheel (902), the upper part of the platform (4) is rotatably connected to a driven wheel (903), the top edge of the driven wheel (903) is fixedly connected to a cylinder (904), the outer surface of the cylinder (904) is sleeved with a return plate (905), and the side of the return plate (905) is fixedly connected to a rack (906).

3. The automatic positioning machine for POD cover for hardcover books according to claim 2, characterized in that: A support (907) is provided at the edge of the upper surface of the table plate (4); a gear (908) is movably sleeved on the outer surface of the support (907); an arc-shaped rod (909) is movably sleeved on the middle part of the outer surface of the support (907); the arc-shaped rod (909) is fixedly connected to the gear (908); the gear (908) is meshingly connected to the rack (906); and a square plate (910) is fixedly connected to one end of the arc-shaped rod (909) away from the support (907).

4. The automatic positioning machine for POD cover for hardcover books according to claim 3, characterized in that: The upper surface of the platform (4) is fixedly connected to a track (911), and both ends of the return plate (905) slide inside the track (911).

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