CN113320311A

CN113320311A - Pedal type control mechanism for automatically turning pages of books and using method

Info

Publication number: CN113320311A
Application number: CN202110597116.8A
Authority: CN
Inventors: 牛博阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-21
Filing date: 2019-04-21
Publication date: 2021-08-31
Also published as: CN109968859A; CN113320310A; CN109968859B

Abstract

The invention relates to the technical field of automatic page turning, in particular to a pedal type control mechanism for automatically turning pages of books and a using method thereof. The invention has reasonable structural design, controls the positive and negative rotation of the motor through the left pedal and the right pedal, realizes the left-right turnover of the page turning device and the positive and negative swing of the swing rod, liberates both hands and has good development prospect.

Description

Pedal type control mechanism for automatically turning pages of books and using method

The application is a divisional application of an invention patent application with the application number of 2019103209702, the invention creation name of which is an automatic page turning control device and the application date of 2019, 04 and 21.

Technical Field

The invention relates to the technical field of automatic page turning, in particular to a pedal type control mechanism for automatic page turning of books and a use method.

Background

Books are a step of human progress, reading can be maintained while knowledge is added, however, reading is inconvenient for a reader with physical health problems to turn a page, and in addition, the playing effect is influenced by turning the book during playing of a band, so that people are often required to help to turn the page during playing, and an automatic page turning device needs to be designed.

An automatic and accurate page turning and paper twisting device with the publication number CN106240189B makes an effort, a page turning and guiding rod enters between the first layer of paper and the book from a gap, and the first layer of paper is separated from the book by the page guiding rod; the drum turns over a page mechanism and rotates to breach department, and drum turns over a page mechanism and no longer exerts pressure to the first paper, then presses book mechanism lifting, leads page pole rotation to continue to rotate the opposite side of turning over the first paper to books, and this in-process, the exhaust vent of blast plate constantly is gone into to 4 middle bloies of books and is gaseous, and fast-speed gas makes the first paper turn or rotate to under the direction of leading page pole, make the first paper turn over to the opposite side, realized the accurate upset of first paper. However, the device can only turn over the book in one direction and cannot turn back, so that improvement is needed.

In summary, the technical problem to be solved by the technical solution is: most of the existing automatic page turning schemes are manual page turning or unidirectional automatic page turning, and the automatic page turning cannot be carried out automatically, so that further innovation and improvement are needed.

Disclosure of Invention

The pedal type control mechanism is reasonable in structural design, and forward and reverse rotation of the motor is realized by left and right treading of the pedals, so that left and right turning of the book turning device and forward and reverse swinging of the swing rod are realized, and hands are liberated.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a pedal-operated control mechanism of books automatic page turning, includes base, automatic book turning device, L type backup pad, connecting plate, bottom plate, second telescopic link, the articulated seat of U type, first fixed case, the fixed case of second, the rigid coupling has the second telescopic link in the middle of first fixed case and the first fixed incasement bottom in the middle of the base upper end, conveniently adjusts reading height, the second quad slit rigid coupling that first fixed case upper end was worn out in second telescopic link upper end has locking knob under the articulated seat of U type and its right-hand member threaded connection, the articulated up end that has second fixed case and the fixed case of second in the inside upper end of the articulated seat of U type is under the bottom plate, the inside cavity of bottom plate is provided with vertical draw-in groove and its left and right sides middle equal symmetrical rigid coupling in upper end has two L type backup pads, the inside cavity of L type backup pad, right upper end all are provided with second open slot and open slot right-hand member around both sides all are provided with the third through-hole The automatic book turning device is composed of pedals, torsion springs, first metal contact blocks, second metal contact blocks, wires, a motor, a first rotating shaft, a first gear, a second rotating shaft, a first helical gear, a second helical gear, a third rotating shaft, a driving wheel, a belt, a driven wheel, a fourth rotating shaft, a cam, a first open slot, a first T-shaped block and a reset spring, wherein the first square hole is formed in each of the left side and the right side of the front end face of the first fixed box, the pedals are inserted in the first square hole, the bottoms of the front ends of the pedals are hinged to the base, the torsion springs are sleeved in the middle of the bottoms of the pedals, the pedals can be automatically reset conveniently after being stepped on, the lower ends of the rear sides of the pedals are fixedly connected with the first metal contact blocks, the first metal contact blocks and the second metal contact blocks are fixedly connected to the inner bottoms of the first fixed box The rear end of the second metal contact block is electrically connected with a lead, the upper end of the lead sequentially passes through a first through hole at the upper end of the first fixed box and the front end of the second fixed box and is electrically connected with a motor fixedly connected to the bottom in the box body of the second fixed box, an output shaft at the upper end of the motor is fixedly connected with a first rotating shaft, the upper end of the first rotating shaft passes through a bottom plate and is fixedly connected with a first gear, the left end and the right end of the first gear and the rear end are meshed with a second gear every 120 degrees, and the second gear is fixedly connected on the second rotating shaft, so that an equilateral triangle is formed among three second rotating shafts, the distances from two L-shaped supporting plates are the same and no motion interference is generated when the swing rod swings forwards and backwards, the rotating directions of the swing rod and the cam are the same, the lower ends of the second rotating shafts in the inserting groove and the upper ends of the two second rotating shafts at the front side sequentially pass through the second through hole and are fixedly connected with a first helical gear at the upper end of the swing rod, the upper end of a second rotating shaft at the rear side penetrates out of a bottom plate to be fixedly connected with a swing rod, the left upper ends of two L-shaped supporting plates at the front side are respectively provided with a third through hole, a third rotating shaft and a fourth rotating shaft are respectively inserted into the left and right third through holes, the rear end of the third rotating shaft is fixedly connected with a second helical gear, the lower side of the front end of the second helical gear is meshed with the first helical gear, the front end of the third rotating shaft is fixedly connected with a driving wheel, a driven wheel is correspondingly and fixedly connected onto the fourth rotating shaft at the right side of the third rotating shaft, the driving wheel is in transmission connection with the driven wheel through a belt, cams are fixedly connected to the front side and the rear side of the fourth rotating shaft, the cams are all clamped in the second open grooves, the lower end of each cam is provided with a first open groove, a first T-shaped block is clamped in the first open groove through a reset spring, the lower end of the first T-shaped block is an arc friction grain, the first T-shaped block is convenient to be suitable for books with different thicknesses and move upwards after a first page is turned open through the arc friction grain, avoid rubbing the second page or leaf, realize the accurate of single page or leaf and turn over, and the installation is invertd to the left and right sides cam, the inboard rigid coupling in two L type backup pad lower parts has the connecting plate, the inside cavity of connecting plate, upper end are provided with third opening groove and third opening inslot joint have second T type piece, second T type piece lower extreme rigid coupling has reset spring and its upper right end rigid coupling to have first telescopic link, the lower extreme rigid coupling of first telescopic link has smooth contact ball and its upper end threaded connection to have a locking knob, has played the suppression effect to books on the one hand, and on the other hand when turning over the book, smooth contact ball reduces the friction to books, reduces the hindrance to the page or leaf process of turning over.

Furthermore, the left end and the right end of the front side of the upper end surface of the bottom plate are symmetrically and fixedly connected with a baffle plate, so that books are prevented from sliding off when the reading angle is adjusted.

Furthermore, the right-hand member threaded connection of the articulated seat of U type has the locking knob, makes things convenient for the regulation and the fixed of the device angle.

Furthermore, the motor is a forward and reverse rotating motor, so that the books are turned left and right.

The control logic of the pedal-driven left and right automatic page turning is as follows:

when the page is read in a left-to-right positive sequence mode, the swing rod is initially located at the initial horizontal position on the left side of the second rotating shaft, the pedal on the right side is trampled, the motor rotates in a positive mode to drive the first gear to rotate clockwise, the second gear on the left side drives the first bevel gear to rotate anticlockwise through the second rotating shaft, the second bevel gear is driven to rotate clockwise, the driving wheel rotates clockwise through belt transmission, the cam rotates clockwise finally, the left page is rubbed to turn up, the turned page is conveyed to the right side by the swing rod in an anticlockwise swinging mode at the moment, the page is flattened from left to right by the cam rotating anticlockwise on the right side, and the page is pressed by the smooth contact ball finally.

When reading from right to left reverse order, the pendulum rod is initially located the initial horizontal position on second pivot right side, trample the left side footboard, the motor reversal drives first gear anticlockwise rotation, and then drive second gear clockwise, the second gear on right side drives first helical gear clockwise through the second pivot, drive second helical gear anticlockwise again, then drive action wheel anticlockwise, then drive from driving wheel anticlockwise through belt transmission, drive cam anticlockwise at last, rub the page on right side and turn up upwards, the pendulum rod clockwise swing sends the page of turning up to the left side this moment, left cam clockwise rotates and flattens the page from right to left, push down by smooth contact ball at last.

The invention has the beneficial effects that: the invention has reasonable structural design, realizes the positive and negative rotation of the motor by treading the pedals left and right, further realizes the left and right turnover of the page turning device and the positive and negative swing of the swing rod, liberates both hands and solves the technical problem that the existing page turning device can only turn pages in one direction.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of the automatic page turning device of the present invention.

FIG. 3 is a schematic view of the position of the connecting plate and the second T-shaped block of the present invention.

FIG. 4 is a diagram showing the positional relationship between the motor and the base plate according to the present invention.

Detailed Description

The present invention will be described in detail below with reference to fig. 1 to 4.

As shown in figures 1-4, the automatic book turning device comprises a base 1, an automatic book turning device, an L-shaped support plate 4, a connecting plate 5, a bottom plate 6, a second telescopic rod 8, a U-shaped hinged seat 9, a first fixed box 2 and a second fixed box 10, wherein the first fixed box 2 is fixedly connected in the middle of the upper end of the base 1, the second telescopic rod 8 is fixedly connected in the middle of the inner bottom of the first fixed box 2 for conveniently adjusting the reading height, the upper end of the second telescopic rod 8 penetrates through a second square hole 2-3 in the upper end of the first fixed box 2 and is fixedly connected to the right lower end of the U-shaped hinged seat 9, the right end of the second telescopic rod is in threaded connection with a locking knob 8-1, the second fixed box 10 is hinged to the upper end of the U-shaped hinged seat 9, the upper end face of the second fixed box 10 is fixedly connected to the right lower end of the bottom plate 6, the bottom plate 6 is hollow, a longitudinal clamping groove 6-1 is arranged in the middle of the upper end face, and two L-shaped support plates 4 are symmetrically fixedly connected in the middle of the upper ends of the left side and the right side, the automatic page turning device is characterized in that a second open slot 4-2 is formed in the middle of the hollow part and the upper right end of each L-shaped support plate 4, third through holes 3-15 are formed in the front side and the rear side of the right end of each open slot, a second through hole 4-1 is formed in the upper left end and the lower end of each bottom plate 6 corresponding to the lower ends of the two L-shaped support plates 4 on the front side, a groove 6-2 is formed in the inner bottom of the lower end of each second through hole 4-1, and the automatic page turning device comprises a pedal 3, a torsion spring 3-1, a first metal contact block 3-2, a second metal contact block 3-3, a lead 3-4, a motor 3-5, a first rotating shaft 3-6, a first gear 3-7, a second gear 3-8, a second rotating shaft 3-9, a first helical gear 3-10, a second helical gear 3-11, a third rotating shaft 3-12, a third rotating shaft 3-6, a third rotating shaft 3-7, 3-13 parts of driving wheel, 3-14 parts of belt, 3-15 parts of driven wheel,

The left side and the right side of the front end face of the first fixed box 2 are respectively provided with a first square hole 2-1, a pedal 3 is inserted into the first square hole 2-1, the bottom of the front end of the pedal 3 is hinged to the base 1, a torsion spring 3-1 is sleeved in the middle of the bottom of the front end of the pedal 3, the pedal 3 can be conveniently stepped on to automatically reset, the lower end of the rear side of the pedal 3 is fixedly connected with a first metal contact block 3-2, the first metal contact block 3-2 is electrically connected with a second metal contact block 3-3 fixedly connected to the inner bottom of the first fixed box 2, the rear end of the second metal contact block 3-3 is electrically connected with a wire 3-4, the upper end of the wire 3-4 sequentially penetrates through the upper end of the first fixed box 2 and a first through hole 2-2 at the front end of the second fixed box 10, and the upper end of the second metal contact block 3-3 A motor 3-5 connected with the bottom in the second fixed box 10, the output shaft of the upper end of the motor 3-5 is fixedly connected with a first rotating shaft 3-6, the upper end of the first rotating shaft 3-6 passes through the bottom plate 6 to be fixedly connected with a first gear 3-7, the left end and the right end of the first gear 3-7 are meshed with a second gear 3-8 at intervals of 120 degrees, and the second gear 3-8 is fixedly connected with a second rotating shaft 3-9, so that an equilateral triangle is formed between the three second rotating shafts 3-9, the distances from the two L-shaped supporting plates 4 are the same when the swing rod 3-21 swings forwards and backwards, no motion interference is generated, the rotating directions of the swing rod 3-21 and the cams 3-17 are the same, the lower end of the second rotating shaft 3-9 is inserted into the groove 6-2, and the upper ends of the two second rotating shafts 3-9 on the front side sequentially pass through the second through holes 4-1 and the upper ends of the second rotating shafts 3-1 The first bevel gears 3-10 are fixedly connected, the upper ends of the second rotating shafts 3-9 at the rear side penetrate through the bottom plate 6 and are fixedly connected with the swing rods 3-21, the upper left ends of the two L-shaped supporting plates 4 at the front side are respectively provided with third through holes 3-15, the third through holes 3-12 and the fourth through holes 3-16 are respectively inserted into the left and right third through holes 3-15, the rear ends of the third rotating shafts 3-12 are fixedly connected with the second bevel gears 3-11, the lower sides of the front ends of the second bevel gears 3-11 are meshed with the first bevel gears 3-10, the front ends of the third rotating shafts 3-12 are fixedly connected with driving wheels 3-13, driven wheels 3-15 are correspondingly and fixedly connected onto the fourth rotating shafts 3-16 at the right sides of the third rotating shafts 3-12, the driving wheels 3-13 are in transmission connection with the driven wheels 3-15 through belts 3-14, cams 3-17 are fixedly connected onto the front and back sides of the fourth rotating shafts 3-16, and the cams 3-17 are all clamped In the second open slot 4-2, the lower end of the cam 3-17 is provided with a first open slot 3-18, the first open slot 3-18 is internally provided with a first T-shaped block 3-19 in a clamping manner through a reset spring 3-20, the lower end of the first T-shaped block 3-19 is provided with arc friction lines, so that the first T-shaped block 3-19 is conveniently moved upwards after the first page is opened by using books with different thicknesses and the arc friction lines, the second page is prevented from being rubbed, accurate page turning is realized, the cams 3-17 on the left side and the right side are inversely installed, the inner sides of the lower parts of the two L-shaped support plates 4 are fixedly connected with a connecting plate 5, the connecting plate 5 is hollow, the upper end of the connecting plate is provided with a third open slot 5-1, the second T-shaped block 5-2 is clamped in the third open slot 5-1, the lower end of the second T-shaped block 5-2 is fixedly connected with a reset spring 3-20, and the upper right end of the second T-shaped block is fixedly connected with a first telescopic rod 5-3-18 The lower end of the first telescopic rod 5-3 is fixedly connected with a smooth contact ball 5-5, and the upper end of the first telescopic rod is in threaded connection with a locking knob 5-4, so that the book is pressed, and when the book is turned, the smooth contact ball 5-5 reduces friction on the book and obstruction to the page turning process.

In this embodiment, the left and right ends of the front side of the upper end surface of the bottom plate 6 are symmetrically and fixedly connected with the baffle 7, so that the book is prevented from sliding off when the reading angle is adjusted.

In the embodiment, the right end of the U-shaped hinged seat 9 is in threaded connection with a locking knob 8-1, so that the angle of the device can be conveniently adjusted and fixed.

In the embodiment, the motors 3-5 are forward and reverse rotating motors 3-5, so that the books are turned left and right.

when the page is read from left to right in a positive sequence, the swing rod 3-21 is initially positioned at the initial horizontal position on the left side of the second rotating shaft 3-9, the right pedal 3 is treaded, the motor 3-5 rotates positively to drive the first gear 3-7 to rotate clockwise to further drive the second gear 3-8 to rotate anticlockwise, the second gear 3-8 on the left side drives the first bevel gear 3-10 to rotate anticlockwise through the second rotating shaft 3-9, then drives the second bevel gear 3-11 to rotate clockwise to further drive the driving wheel 3-13 to rotate clockwise, then drives the driven wheel 3-15 to rotate clockwise through the belt 3-14, finally drives the cam 3-17 to rotate clockwise to rub the left page to turn upwards, at the moment, the swing rod 3-21 swings anticlockwise to send the turned page to the right side, the cam 3-17 rotates anticlockwise to flatten the page on the right side from left to right, finally, pressing by a smooth contact ball 5-5;

when reading from right to left in reverse order, the swing rod 3-21 is initially positioned at the initial horizontal position at the right side of the second rotating shaft 3-9, the left pedal 3 is treaded, the motor 3-5 reversely rotates to drive the first gear 3-7 to rotate anticlockwise and further drive the second gear 3-8 to rotate clockwise, the second gear 3-8 at the right side drives the first bevel gear 3-10 to rotate clockwise through the second rotating shaft 3-9 and further drive the second bevel gear 3-11 to rotate anticlockwise, then drive the driving wheel 3-13 to rotate anticlockwise, then drive the driven wheel to rotate anticlockwise through the belt 3-14 and finally drive the cam 3-17 to rotate anticlockwise, the right page is rubbed to be turned upwards, at the moment, the swing rod 3-21 clockwise swings to convey the turned page to the left side, the cam 3-17 at the left side clockwise rotates to flatten the page from the right to the left, finally pressed by the smooth contact ball 5-5.

Before use, the swing rods 3-21 are positioned at the left initial horizontal position (or the right initial horizontal position) of the second rotating shaft 3-9, the first T-shaped blocks 3-19 in the left cam 3-17 are downward, the first T-shaped blocks 3-19 in the right cam 3-17 are upward, a book to be read is opened and clamped at the lower ends of the cams 3-17, and the height and the angle of the second telescopic rod 8 and the U-shaped hinging seat 9 are adjusted according to requirements.

When the book page turning device is used, if a book is read in a reverse order from right to left, the left pedal 3 is treaded, the motor 3-5 reversely rotates to drive the first gear 3-7 to anticlockwise rotate so as to drive the second gear 3-8 to clockwise rotate, the second gear 3-8 drives the first bevel gear 3-10 to clockwise rotate through the second rotating shaft 3-9 so as to drive the second bevel gear 3-11 to anticlockwise rotate, the second bevel gear 3-11 drives the driving wheel 3-13 on the third rotating shaft 3-12 to anticlockwise rotate so as to drive the driven wheel 3-15 on the fourth rotating shaft 3-16 to anticlockwise rotate through the belt 3-14, the cam 3-17 is driven to anticlockwise rotate to perform reverse page turning at the same time, and when the left cam 3-17 turns a home page, the swing rod 3-21 horizontally anticlockwise rotates between the home page and the second page and continues to turn the home page to the right end, meanwhile, the right cams 3-17 flatten the pages from left to right from top to bottom.

Otherwise, the right pedal 3 is stepped to realize positive reading.

Claims

1. The utility model provides a pedal-operated control mechanism of automatic page turning of books, includes base, first fixed case, bottom plate and automatic page turning device, its characterized in that: the middle of the upper end of the base is fixedly connected with a first fixing box, the bottom plate is hollow, a longitudinal clamping groove is formed in the middle of the upper end face, two L-shaped supporting plates are symmetrically and fixedly connected in the middle of the upper ends of the left side and the right side of the bottom plate, a second open slot is formed in the middle of the hollow upper end and the upper right end of the L-shaped supporting plate, third through holes are formed in the front side and the rear side of the right end of the second open slot, second through holes are correspondingly formed in the upper ends of the left side and the right side of the bottom plate and the lower ends of the two L-shaped supporting plates on the front side, and grooves are correspondingly formed in the inner bottom of the lower ends of the second through holes;

the automatic book turning device is composed of a pedal, a torsion spring, a first metal contact block, a second metal contact block, a lead, a motor, a first rotating shaft, a first gear, a second rotating shaft, a first helical gear, a second helical gear, a third rotating shaft, a driving wheel, a belt, a driven wheel, a fourth rotating shaft, a cam, a first open slot, a first T-shaped block and a reset spring, wherein the left side and the right side of the front end face of the first fixing box are respectively provided with a first square hole, the pedal is inserted in the first square hole, the bottom of the front end of the pedal is hinged on the base, the torsion spring is sleeved in the middle of the bottom of the pedal, the lower end of the rear side of the pedal is fixedly connected with the first metal contact block, the first metal contact block is electrically connected with the second metal contact block fixedly connected with the inner bottom of the first fixing box, the rear end of the second metal contact block is electrically connected with the lead, and the upper end of the lead penetrates through the upper end of the first fixing box and is electrically connected with the motor, the motor is a positive and negative rotation motor;

the upper end of the inside of the U-shaped hinge seat is hinged with a second fixed box, the upper end face of the second fixed box is fixedly connected to the lower end of the bottom plate, a second telescopic rod is fixedly connected to the middle of the inner bottom of the first fixed box, a second square hole, penetrating through the upper end of the first fixed box, in the upper end of the second telescopic rod is fixedly connected to the lower end of the U-shaped hinge seat, the right end of the second square hole is in threaded connection with a locking knob, and the motor is fixedly connected to the inner bottom of the second fixed box;

the output shaft at the upper end of the motor is fixedly connected with a first rotating shaft, the upper end of the first rotating shaft penetrates through a bottom plate to be fixedly connected with a first gear, the left end, the right end and the rear end of the first gear are meshed with a second gear every 120 degrees, the second gear is fixedly connected onto a second rotating shaft, the lower end of the second rotating shaft is inserted into a groove, the upper ends of two second rotating shafts at the front side sequentially penetrate through second through holes to be fixedly connected with a first helical gear at the upper end of the second rotating shaft, the upper end of the second rotating shaft at the rear side penetrates out of the bottom plate to be fixedly connected with a swing rod, the left upper ends of two L-shaped supporting plates at the front side are respectively provided with a third through hole, a third rotating shaft and a fourth rotating shaft are respectively inserted into the left through hole and the right through hole, the rear end of the third rotating shaft is fixedly connected with a second helical gear, the lower side of the front end of the second helical gear is meshed with the first helical gear, the front end of the third rotating shaft is fixedly connected with a driving wheel, a driven wheel is correspondingly and fixedly connected with the driven wheel through a belt, the front side and the rear side of the fourth rotating shaft are fixedly connected with cams which are all clamped in the second open grooves, the lower ends of the cams are provided with first open grooves, first T-shaped blocks are clamped in the first open grooves through reset springs, the lower ends of the first T-shaped blocks are arc friction lines, the cams on the left side and the right side are inversely installed, the inner sides of the lower parts of the two L-shaped supporting plates are fixedly connected with a connecting plate, the connecting plate is hollow, a third open groove is formed in the upper end of the connecting plate, a second T-shaped block is clamped in the third open groove, the lower end of the second T-shaped block is fixedly connected with a reset spring, the right upper end of the second T-shaped block is fixedly connected with a first telescopic rod, the lower end of the first telescopic rod is fixedly connected with a smooth contact ball, and the upper end of the first telescopic rod is in threaded connection with a locking knob;

the control logic of the left and right automatic page turning driven by the pedal is as follows:

when the page is read in a positive sequence from left to right, the oscillating bar is initially positioned at the initial horizontal position on the left side of the second rotating shaft, the pedal on the right side is treaded, the motor rotates in a positive direction to drive the first gear to rotate clockwise so as to drive the second gear to rotate anticlockwise, the second gear on the left side drives the first bevel gear to rotate anticlockwise through the second rotating shaft and then drives the second bevel gear to rotate clockwise so as to drive the driving wheel to rotate clockwise, then the driven wheel is driven to rotate clockwise through the belt, finally the cam is driven to rotate clockwise, the page on the left side is rubbed to be turned upwards, the oscillating bar swings anticlockwise to send the turned page to the right side, the cam on the right side rotates anticlockwise to flatten the page from left to right, and finally the page is pressed by the smooth contact ball;

2. The pedal-operated control mechanism for automatically turning pages of books as claimed in claim 1, wherein: the using method comprises the following steps:

the heights and the angles of the second telescopic rod 8 and the U-shaped hinged seat 9 are adjusted according to requirements;

opening a book to be read, clamping the book to be read at the lower end of the cams 3-17, opening the book to be read, placing a book spine in the longitudinal clamping groove, and fixing two sides of the book by using the smooth contact balls;

determining the page turning direction as required:

if the pages need to be turned from right to left, the initial position of the swing rod is adjusted to the right side of the second rotating shaft in the horizontal direction, the cam on the right side is turned over to the vertical direction, and the lower end of the cam is in contact with the uppermost page on the right side of the book;

if the pages need to be turned from left to right, the initial position of the swing rod is adjusted to the left side of the second rotating shaft in the horizontal direction, the cam on the left side is turned over to the vertical direction, and the lower end of the cam is in contact with the uppermost page on the left side of the book;

finally, turning the page from left to right, the pedal on the right side is stepped on, and turning the page from right to left, the pedal on the left side is stepped on.