Auxiliary paper guiding mechanism of a folding machine with format changeover

Abstract

The application discloses an auxiliary paper guiding mechanism of a folding machine with specification switching, which is suitable for a three-roller type rolling folding machine. The folding machine comprises a paper cutting roller, a punching needle roller, a toothed roller, a two-fold roller and a folding and pasting conveying line belt. The folding and pasting conveying line belt is arranged between the paper outlet side of the toothed roller and the upper side of a newspaper outlet table and comprises an upper line belt mechanism and a lower line belt mechanism. The upper line belt mechanism comprises an upper line belt, a paper guiding plate, a line belt front end winding and unwinding mechanism and a line belt tensioning mechanism. The auxiliary paper guiding mechanism comprises an auxiliary line belt mechanism and a switching system. The auxiliary line belt mechanism comprises a guide rail frame, two pairs of guide rail wheels, an auxiliary line belt lifting mechanism and an auxiliary line belt. The switching system comprises a two-position five-way manual valve, a two-position five-way electromagnetic valve, a first air control valve, a second air control valve and a shuttle valve. The switching system can one-key switch the position of the auxiliary line belt mechanism. The auxiliary paper guiding mechanism of the application not only improves the quality of folding and pasting of any specification, but also enables the folding and pasting to be smoothly peeled off the two-fold roller.

Description

TECHNICAL FIELD

[0001] The present application relates to an auxiliary paper guiding mechanism of a folding machine with format switching. BACKGROUND

[0002] The roll folding type folding machines disclosed in the following patents CN201610726863.6 (a twenty-four format folding switching device of a three-roller type roll folding folding machine), CN201911336598.0 (an 8-fold folding to 16-fold folding switching method), CN201911336595.7 (an 8-fold folding to 32-fold single-fold folding switching method), CN201911337408.7 (an 8-fold folding to 24-fold folding switching method), and CN201911336594.2 (a 32-fold folding to 24-fold folding switching method) can fold 8-fold, 16-fold, 24-fold and 32-fold, and can switch between these formats according to the size of the printed matter. Such roll folding type folding machines include a cutting roller, a punch roller, a gripper roller, a two-fold roller (32-fold roller), and a folding and conveying line belt (front paper conveying line belt). The folding and conveying line belt is arranged between the paper outlet side of the gripper roller and the newspaper outlet table, and is used for 8-fold, 16-fold, 24-fold and 32-fold folding and conveying.

[0003] When the folding machine is used for 8-fold and 16-fold folding, the paper is first punched by the punch on the punch roller and sent to the gripper roller, and then cut by the cutting knife on the cutting roller; the 8-fold folding knife on the punch roller inserts a 1 / 2 length of the book block between the 8-fold clamps on the gripper roller to generate an 8-fold folding (one fold), and the 8-fold folding is transferred to the front end of the folding and conveying line belt by the gripper roller, and then guided into the folding and conveying line belt by the paper guiding plate at the front end of the folding and conveying line belt, and then sequentially sent to the 16-fold folding knife device and the newspaper outlet table. When the folding machine is used for 24-fold folding and 32-fold folding, the 8-fold folding knife on the punch roller inserts a 1 / 2 length of the folding into the 8-fold clamps on the gripper roller to generate an 8-fold folding (one fold), and the front end of the 8-fold folding is hooked by the 32-fold hook on the two-fold roller, and the 8-fold clamps on the gripper roller are loosened, and the front end of the 8-fold folding is hooked by the 32-fold hook, and then the 32-fold folding knife on the 32-fold roller inserts the folding into the 32-fold clamps on the gripper roller to generate a 32-fold folding (two folds), and finally the 32-fold hook on the two-fold roller loosens the 32-fold folding, and the 32-fold folding is transferred to the front end of the folding and conveying line belt by the gripper roller, and then guided into the folding and conveying line belt by the paper guiding plate at the front end of the folding and conveying line belt, and then sequentially sent to the 16-fold folding knife device and the newspaper outlet table.

[0004] When the four specifications are folded and pasted, the second folding cylinder does not participate in the folding when 8 or 16 folding is performed, and the pasting is completed at the low position of the tooth cylinder after one folding, and the tooth cylinder rotates with the pasting, and then the pasting is output after passing through the second folding cylinder. When 24 or 32 folding is performed, the second folding cylinder participates in the folding, and the pasting is performed at the high position of the tooth cylinder, and when the 32 hook of the second folding cylinder is loosened after the second folding is completed, the pasting may be pasted on the second folding cylinder, which affects the output of the pasting, and therefore these problems need to be solved. SUMMARY

[0005] The purpose of the present application is to overcome the defects of the prior art and provide an auxiliary paper guide mechanism of a folding machine with specification switching, which can one-key switch the position of the auxiliary line belt, not only improve the quality of any specification folding and pasting, but also make the pasting smoothly peel off the second folding cylinder.

[0006] The purpose of the present application is achieved by an auxiliary paper guide mechanism of a folding machine with specification switching, which is suitable for a three-cylinder type rolling folding folding machine, the folding machine comprising a paper cutting cylinder, a punch needle cylinder, a tooth cylinder, a second folding cylinder and a pasting conveying line belt; the pasting conveying line belt is arranged between the paper outlet side of the tooth cylinder and the upper side of the report table and comprises an upper line belt mechanism and a lower line belt mechanism;

[0007] The upper line belt mechanism comprises a front support shaft, an upper front line belt wheel shaft, a rear support shaft, an upper rear line belt wheel shaft, a pair of front swing arms, an upper line belt, a paper guide plate, a line belt front end retracting mechanism and a line belt tensioning mechanism;

[0008] The front support shaft is arranged on the paper outlet side of the tooth cylinder, and a first line belt wheel is installed on the front support shaft through an extension rod; the upper front line belt wheel shaft is arranged below and behind the front support shaft, and a second line belt wheel is installed on the upper front line belt wheel shaft; the rear support shaft is connected between the two side wall plates of the folding machine and located above the report table, and a third line belt wheel is installed on the rear support shaft through a rear swing arm; the two ends of the upper rear line belt wheel shaft are respectively installed on the driving side wall plate and the operating side wall plate of the folding machine through bearings one by one and located above and behind the upper front line belt wheel shaft, and a fourth line belt wheel is installed on the upper rear line belt wheel shaft;

[0009] The front swing arms are inverted isosceles triangles, the bottom rear ends of the pair of front swing arms are hinged to the two ends of the upper rear line belt wheel shaft one by one, the bottom front ends of the pair of front swing arms are fixed to the two ends of the front support shaft one by one, and the tops of the pair of front swing arms are hinged to the two ends of the upper front line belt wheel shaft one by one;

[0010] The upper wire belt sequentially passes the first wire belt wheel clockwise, the second wire belt wheel clockwise, the third wire belt wheel clockwise and the fourth wire belt wheel counterclockwise;

[0011] The paper guide plate is installed on the elongated rod and located at the front end of the first wire belt wheel, and is close to the two-fold cylinder;

[0012] The wire belt front end winding and unwinding mechanism comprises a wire belt front end winding and unwinding cylinder installed on the driving side wall plate of the folding machine, a front swing arm connecting rod connected between the piston rod of the wire belt front end winding and unwinding cylinder and a front swing arm close to the driving side wall plate, a first sensing plate installed on the operation side end of the upper rear wire belt wheel shaft, and a first machine control valve installed on the operation side wall plate and located below the first sensing plate;

[0013] The wire belt tensioning mechanism comprises a wire belt tensioning cylinder installed on the driving side wall plate of the folding machine, and the piston rod of the wire belt tensioning cylinder is connected with one end of the rear support shaft;

[0014] The lower wire belt mechanism comprises a lower front wire belt wheel, a lower rear wire belt wheel and a lower wire belt, the lower front wire belt wheel is arranged below the upper front wire belt wheel shaft through a lower front wire belt wheel shaft, the lower rear wire belt wheel is arranged above the delivery table through a lower rear wire belt wheel shaft, and the lower wire belt is wound between the lower front wire belt wheel and the lower rear wire belt wheel;

[0015] The auxiliary paper guide mechanism comprises an auxiliary wire belt mechanism and a switching system;

[0016] The auxiliary wire belt mechanism comprises a guide rail frame, two pairs of guide rail wheels, an auxiliary wire belt lifting mechanism, a main auxiliary wire belt wheel, an upper auxiliary wire belt wheel, a lower auxiliary wire belt wheel and an auxiliary wire belt;

[0017] The guide rail frame is arranged above the paper delivery side of the gripper cylinder and comprises a pair of guide rails arranged on the inner side of the driving side wall plate and the inner side of the operation side wall plate, an upper support shaft spanning between the upper ends of the pair of guide rails, a middle support shaft spanning between the middle portions of the pair of guide rails, and a main auxiliary wire belt wheel shaft spanning between the lower ends of the pair of guide rails;

[0018] The two pairs of guide rail wheels are installed on the inner side surfaces of the driving side wall plate and the operation side wall plate one by one and above and below each other, and are connected to the pair of guide rails one by one;

[0019] The auxiliary wire belt lifting mechanism comprises an auxiliary wire belt lifting cylinder installed on the inner side surface of the driving side wall plate through a support, a second machine control valve installed on the inner side surface of the operation side wall plate, and a second sensing plate installed on the outer side surface of the guide rail close to the operation side wall plate, and the piston rod of the auxiliary wire belt lifting cylinder is connected to the middle portion of the middle support shaft of the guide rail frame.

[0020] The main auxiliary line pulley is mounted on the main auxiliary line pulley shaft of the guide rail frame;

[0021] The upper auxiliary line pulley is mounted above the two-way folding cylinder through an upper auxiliary line pulley shaft;

[0022] The lower auxiliary line pulley is mounted below the two-way folding cylinder through a lower auxiliary line pulley shaft;

[0023] The auxiliary line belt is wound around the main auxiliary line pulley, the upper auxiliary line pulley and the lower auxiliary line pulley, and the auxiliary line belt between the main auxiliary line pulley and the lower auxiliary line pulley is attached to the rear side of the two-way folding cylinder, and the auxiliary line belt between the upper auxiliary line pulley and the lower auxiliary line pulley is attached to the front side of the two-way folding cylinder;

[0024] The switching system comprises a two-position five-way manual valve, a two-position five-way electromagnetic valve, a first air control valve, a second air control valve and a shuttle valve; the air inlet of the two-position five-way manual valve is communicated with the air source, the right outlet of the two-position five-way manual valve is respectively communicated with the pressure signal inlet of the first air control valve, the pressure signal inlet of the second air control valve, the air inlet of the first machine control valve and the rodless cavity of the line belt front end retracting and extending cylinder, the left outlet of the two-position five-way manual valve is respectively communicated with the right inlet of the shuttle valve and the air inlet of the second machine control valve; the air outlet of the first machine control valve is communicated with the air inlet of the two-position five-way electromagnetic valve; the air outlet of the second machine control valve is communicated with the rod cavity of the line belt front end retracting and extending cylinder; the right outlet of the two-position five-way electromagnetic valve is communicated with the left inlet of the shuttle valve, and the left outlet of the two-position five-way electromagnetic valve is communicated with the air inlet of the second air control valve; the air inlets and outlets of the first air control valve are respectively communicated with the air source and the rodless cavity of the line belt tensioning cylinder; the air inlets and outlets of the second air control valve are respectively communicated with the left outlet of the two-position five-way electromagnetic valve and the rodless cavity of the auxiliary line belt lifting cylinder; the air outlet of the shuttle valve is communicated with the rod cavity of the auxiliary line belt lifting cylinder.

[0025] The auxiliary paper guide mechanism of the folding machine with the above-mentioned belt specification switching function, wherein the upper line belt mechanism further comprises a first line belt passing pulley, a second line belt passing pulley and a third line belt passing pulley which are sequentially arranged above the rear of the fourth line belt pulley, a fourth line belt passing pulley which is arranged below the front of the third line belt pulley, a fifth line belt passing pulley which is arranged below the rear of the fourth line belt passing pulley, and a sixth line belt passing pulley which is arranged behind the second line belt pulley, so that the upper line belt sequentially passes the first line belt pulley, the second line belt pulley, the sixth line belt passing pulley and the fifth line belt passing pulley clockwise, then passes the fourth line belt passing pulley counterclockwise, and then sequentially passes the third line belt pulley, the third line belt passing pulley, the second line belt passing pulley and the first line belt passing pulley clockwise, and then passes the fourth line belt pulley counterclockwise.

[0026] The auxiliary paper guiding mechanism of the folding machine with switching of paper size, wherein the lower line belt mechanism further comprises a first lower cross line belt wheel and a second lower cross line belt wheel arranged in sequence behind the lower front line belt wheel, and a third lower cross line belt wheel and a fourth lower cross line belt wheel arranged in sequence in front of the lower rear line belt wheel and above the lower rear line belt wheel, so that the lower line belt is sequentially wound clockwise around the lower front line belt wheel and the first lower cross line belt wheel, then sequentially wound counterclockwise around the second lower cross line belt wheel and the third lower cross line belt wheel, and then sequentially wound clockwise around the fourth lower cross line belt wheel and the lower rear line belt wheel.

[0027] The auxiliary paper guiding mechanism of the folding machine with switching of paper size, wherein the lower line belt mechanism further comprises a first lower cross line belt wheel and a second lower cross line belt wheel arranged in sequence behind the lower front line belt wheel, and a third lower cross line belt wheel and a fourth lower cross line belt wheel arranged in sequence in front of the lower rear line belt wheel and above the lower rear line belt wheel, so that the lower line belt is sequentially wound clockwise around the lower front line belt wheel and the first lower cross line belt wheel, then sequentially wound counterclockwise around the second lower cross line belt wheel and the third lower cross line belt wheel, and then sequentially wound clockwise around the fourth lower cross line belt wheel and the lower rear line belt wheel.

[0028] The auxiliary paper guiding mechanism of the folding machine with switching of paper size, wherein the lower line belt mechanism further comprises a first lower cross line belt wheel and a second lower cross line belt wheel arranged in sequence behind the lower front line belt wheel, and a third lower cross line belt wheel and a fourth lower cross line belt wheel arranged in sequence in front of the lower rear line belt wheel and above the lower rear line belt wheel, so that the lower line belt is sequentially wound clockwise around the lower front line belt wheel and the first lower cross line belt wheel, then sequentially wound counterclockwise around the second lower cross line belt wheel and the third lower cross line belt wheel, and then sequentially wound clockwise around the fourth lower cross line belt wheel and the lower rear line belt wheel.

[0029] The auxiliary paper guiding mechanism of the folding machine with switching of paper size, wherein the switching system is controlled by PLC or manually controlled.

[0030] The auxiliary paper guiding mechanism of the folding machine with switching of paper size has the following characteristics:

[0031] 1) By setting the auxiliary line belt mechanism, not only the quality of any size of folding and pasting is better, but also the folding machine can smoothly peel off the folding and pasting from the two-fold cylinder when completing the folding and pasting of any size;

[0032] 2) By setting the switching system, the position of the auxiliary line belt mechanism can be switched by one key by only turning a manual valve according to different folding modes of different sizes;

[0033] 3) In the switching system, the control of the line belt front end retracting mechanism, the control of the line belt tensioning mechanism of the folding and pasting conveying line belt and the control of the position of the auxiliary line belt mechanism are softened, so that when the folding and pasting conveying line belt needs to be repaired, only by turning a manual valve, the auxiliary line belt mechanism can be lifted to the highest position first, and then the paper guiding board at the front end of the folding and pasting conveying line belt is opened, avoiding the collision between the paper guiding board and the auxiliary line belt mechanism caused by misoperation, which not only simplifies the operation steps, but also has high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a structural schematic diagram of the auxiliary paper guiding mechanism of the folding machine with switching of paper size;

[0035] Figure 2 is a side view of the auxiliary paper guiding mechanism of the present application when performing 8-up and 16-up folding;

[0036] Figure 2a is a top view of the auxiliary paper guiding mechanism of the present application when performing 8-up and 16-up folding;

[0037] Figure 3 is a side view of the auxiliary paper guiding mechanism of the present application when performing 24-up and 32-up folding;

[0038] Figure 3a is a top view of the auxiliary paper guiding mechanism of the present application when performing 24-up and 32-up folding;

[0039] Figure 4a is a schematic diagram of the switching system of the auxiliary paper guiding mechanism of the present application when performing 8-up and 16-up folding (solid line is the air path conduction path);

[0040] Figure 4b is a schematic diagram of the switching system of the auxiliary paper guiding mechanism of the present application when performing 8-up and 16-up folding (solid line is the air path conduction path);

[0041] Figure 4c is a schematic diagram of the switching system of the auxiliary paper guiding mechanism of the present application when performing 24-up and 32-up folding (solid line is the air path conduction path);

[0042] Figure 4d is a schematic diagram of the switching system of the auxiliary paper guiding mechanism of the present application when performing 24-up and 32-up folding (solid line is the air path conduction path);

[0043] Figure 5 is a side view of the auxiliary paper guiding mechanism of the present application when performing 24-up and 32-up folding mode. DETAILED DESCRIPTION

[0044] The present application will be further described below with reference to the accompanying drawings.

[0045] Referring to Figures 1 to 5 , the auxiliary paper guiding mechanism of the folding machine with specification switching of the present application is suitable for a three-roller type roll folding folding machine, which includes a paper cutting roller (not shown in the figure), a punch roller (not shown in the figure), a toothed roller 100, a two-fold roller 200, and a folding and pasting conveying line belt.

[0046] The folding and pasting conveying line belt is arranged between the paper outlet side of the toothed roller 100 and the upper side of the newspaper delivery table 300 and includes an upper line belt mechanism and a lower line belt mechanism.

[0047] The upper line belt mechanism comprises a front support shaft 11, an upper front line belt wheel shaft 12, a rear support shaft 13, an upper rear line belt wheel shaft 14, a pair of front swing arms 15, first to sixth line belt passing wheels 151-156, an upper line belt 16, a paper guide plate 17, a line belt front end retracting mechanism and a line belt tensioning mechanism; wherein,

[0048] The front support shaft 11 is arranged at the paper outlet side of the gripping roller 100, and the first line belt wheel 110 is arranged on the front support shaft 11 through an extension rod 11A;

[0049] The upper front line belt wheel shaft 12 is arranged below and behind the front support shaft 11, and the second line belt wheel 120 is arranged on the upper front line belt wheel shaft 12;

[0050] The rear support shaft 13 is arranged above the newsstand 300 and across the two side wall plates of the folding machine, and the third line belt wheel 130 is arranged on the rear support shaft 13 through a rear swing arm 13A;

[0051] The upper rear line belt wheel shaft 14 is arranged above and behind the upper front line belt wheel shaft 12, and the fourth line belt wheel 140 is arranged on the upper rear line belt wheel shaft 14, which is correspondingly arranged on the driving side wall plate 101 and the operating side wall plate 102 of the folding machine through bearings;

[0052] The front swing arms 15 are inverted isosceles triangles, the bottom rear ends of the pair of front swing arms 15 are hingedly connected to the two ends of the upper rear line belt wheel shaft 14, the bottom front ends of the pair of front swing arms 15 are fixedly connected to the two ends of the front support shaft 11, and the top ends of the pair of front swing arms 15 are hingedly connected to the two ends of the upper front line belt wheel shaft 12; a front swing arm shaft 15A is further arranged across the bottoms of the pair of front swing arms 15;

[0053] The first to third line belt passing wheels 151-153 are arranged above the fourth line belt wheel 140 in sequence, the fourth line belt passing wheel 154 is arranged below and in front of the third line belt wheel 130, the fifth line belt passing wheel 155 is arranged below and behind the fourth line belt passing wheel 180, and the sixth line belt passing wheel 156 is arranged behind the second line belt wheel 120;

[0054] The upper line belt 16 is sequentially wound clockwise around the first line belt wheel 110, the second line belt wheel 120, the sixth line belt passing wheel 156 and the fifth line belt passing wheel 155, then counterclockwise around the fourth line belt passing wheel 154, and then sequentially clockwise around the third line belt wheel 130, the third line belt passing wheel 153, the second line belt passing wheel 152 and the first line belt passing wheel 151, and then counterclockwise around the fourth line belt wheel 140;

[0055] The paper guide plate 17 is arranged on the extension rod 11A and in front of the first line belt wheel 110, and is close to the two-fold roller 200;

[0056] The front end of the line belt is retracted and released by a front end of the line belt retraction and release mechanism, which comprises a front end of the line belt retraction and release cylinder 21 installed on the driving side wall plate 101 of the folding machine, a front swing arm connecting rod 21A connected between the piston rod of the front end of the line belt retraction and release cylinder 21 and a front swing arm 15 close to the driving side wall plate 101, a first sensing plate 22 installed on the operation side end of the upper rear line belt wheel shaft 14, and a first machine-controlled valve 20 installed on the operation side wall plate 102 and below the first sensing plate 22; the first sensing plate 22 is obtained by cutting a round plate to form a circular gap.

[0057] The line belt tensioning mechanism comprises a line belt tensioning cylinder 31 installed on the driving side wall plate 101 of the folding machine, and the piston rod of the line belt tensioning cylinder 31 is connected with one end of the rear support shaft 13.

[0058] The lower line belt mechanism comprises a lower front line belt wheel 41, a lower rear line belt wheel 42, first to fourth lower over line belt wheels 43-46, and a lower line belt 47; the lower front line belt wheel 41 is arranged below the upper front line belt wheel shaft 12 through a lower front line belt wheel shaft; the lower rear line belt wheel 42 is arranged above the delivery table 300 through a lower rear line belt wheel shaft; the first and second lower over line belt wheels 43 and 44 are arranged in sequence behind the lower front line belt wheel 41, the third lower over line belt wheel 45 is arranged below the front of the lower rear line belt wheel 42, and the fourth lower over line belt wheel 46 is arranged above the front of the lower rear line belt wheel 42; the lower line belt 47 is sequentially wound clockwise around the lower front line belt wheel 41 and the first lower over line belt wheel 43, then counterclockwise around the second and third lower over line belt wheels 44 and 45, and then sequentially clockwise around the fourth lower over line belt wheel 46 and the lower rear line belt wheel 42.

[0059] The upper line belt 16 between the sixth over line belt wheel 156 and the fifth over line belt wheel 155 is parallel to the lower line belt 47 between the lower front line belt wheel 41 and the lower rear line belt wheel 42 and has the smallest spacing;

[0060] The auxiliary paper guiding mechanism of the folding machine with the belt specification switching function comprises an auxiliary line belt mechanism and a switching system.

[0061] The auxiliary line belt mechanism comprises a guide rail frame, two pairs of guide rail wheels 55, an auxiliary line belt lifting mechanism, a main auxiliary line belt wheel 61, an upper auxiliary line belt wheel 62, a lower auxiliary line belt wheel 63, a line belt tensioning wheel 64, and an auxiliary line belt 65; wherein,

[0062] The guide rail frame is arranged above the paper delivery side of the gripper cylinder 100 and comprises a pair of guide rails 51 arranged on the inner sides of the driving side wall plate 101 and the operation side wall plate 102 respectively, an upper support shaft 52 spanning the upper ends of the pair of guide rails 51, a middle support shaft 53 spanning the middle portions of the pair of guide rails 51, and a main auxiliary line belt wheel shaft 54 spanning the lower ends of the pair of guide rails 51;

[0063] Two pairs of guide rail wheels 55 are installed on the inner side of the driving side wall plate 101 and the inner side of the operating side wall plate 102 in one-to-one correspondence and are connected to the pair of guide rails 51 in one-to-one correspondence;

[0064] The auxiliary thread belt lifting mechanism includes an auxiliary thread belt lifting cylinder 56 installed on the inner side of the driving side wall plate 101 through a bracket 61A, a second machine-controlled valve 50 installed on the inner side of the operating side wall plate 102 through a sensor bracket 57, and a second sensing plate 50A installed on the outer side of the guide rail 51 near the operating side wall plate 102, and the piston rod of the auxiliary thread belt lifting cylinder 56 is connected to the middle part of the middle support shaft 53 of the guide rail frame;

[0065] The main auxiliary thread belt wheel 61 is installed on the main auxiliary thread belt wheel shaft 54 of the guide rail frame;

[0066] The upper auxiliary thread belt wheel 62 is installed above the two-fold cylinder 200 through an upper auxiliary thread belt wheel shaft;

[0067] The lower auxiliary thread belt wheel 63 is installed below the two-fold cylinder 200 through a lower auxiliary thread belt wheel shaft;

[0068] The thread belt tensioning wheel 64 is arranged between the lower rear of the upper auxiliary thread belt wheel 62 and the upper front of the two-fold cylinder 200;

[0069] The auxiliary thread belt 65 sequentially passes through the main auxiliary thread belt wheel 61 and the upper auxiliary thread belt wheel 62 clockwise, then passes through the thread belt tensioning wheel 64 counterclockwise, and then passes through the lower auxiliary thread belt wheel 63 clockwise, so that the auxiliary thread belt 65 between the main auxiliary thread belt wheel 61 and the lower auxiliary thread belt wheel 63 is attached to the rear side of the two-fold cylinder 200, and the auxiliary thread belt 65 between the upper auxiliary thread belt wheel 62 and the lower auxiliary thread belt wheel 63 is attached to the front side of the two-fold cylinder 200.

[0070] The switching system comprises a two-position five-way manual valve 10, a two-position five-way electromagnetic valve 30, a first air control valve 40, a second air control valve 60 and a shuttle valve 70; wherein the air inlet of the two-position five-way manual valve 10 is communicated with the air source, the right outlet of the two-position five-way manual valve 10 is respectively communicated with the pressure signal inlet of the first air control valve 40, the pressure signal inlet of the second air control valve 60, the air inlet of the first machine control valve 20 and the rodless cavity of the front end retracting and extending cylinder 21 of the wire belt, and the left outlet of the two-position five-way manual valve 10 is respectively communicated with the right inlet of the shuttle valve 70 and the air inlet of the second machine control valve 50; the air outlet of the first machine control valve 40 is communicated with the air inlet of the two-position five-way electromagnetic valve 30; the air outlet of the second machine control valve 50 is communicated with the rod cavity of the front end retracting and extending cylinder 21 of the wire belt; the right outlet of the two-position five-way electromagnetic valve 30 is communicated with the left inlet of the shuttle valve 70, and the left outlet of the two-position five-way electromagnetic valve 30 is communicated with the air inlet of the second air control valve 60; the air inlet and outlet of the first air control valve 20 are respectively communicated with the air source and the rodless cavity of the wire belt tensioning cylinder 31; the air inlet and outlet of the second air control valve 60 are respectively communicated with the left outlet of the two-position five-way electromagnetic valve 30 and the rodless cavity of the auxiliary wire belt lifting cylinder 56; the air outlet of the shuttle valve 70 is communicated with the rod cavity of the auxiliary wire belt lifting cylinder 56. The two-position five-way electromagnetic valve 30 can be controlled by PLC and manually controlled.

[0071] The auxiliary paper guiding mechanism of the folding machine with specification switching has the following two working modes:

[0072] Mode one, the folding machine performs 8-opening and 16-opening folding and pasting, since the paper is only folded on the gripper cylinder 100 and then is sent to the 16-opening folding knife mechanism 400 and the paper outlet table 300 by the upper wire belt 16 and the lower wire belt 47 of the folding and pasting conveying wire belt, the piston rod of the auxiliary wire belt lifting cylinder 56 is extended, the guide rail frame is lowered to the lowest point, and the main auxiliary wire belt wheel 61 is located behind the first wire belt wheel 110 of the folding and pasting conveying wire belt (see Figure 2 and Figure 2a ), when the folding and pasting is brought to the paper outlet side by the gripper cylinder 100, the folding and pasting is sent to the folding and pasting conveying wire belt by the auxiliary wire belt 65, is sent to the 16-opening folding knife mechanism 400 and the paper outlet table 300 by the upper wire belt 16 and the lower wire belt 47 of the folding and pasting conveying wire belt, and the auxiliary wire belt 65 is used to peel off the folding and pasting possibly pasted on the second folding cylinder 200 after being folded.

[0073] Mode two, the folding machine performs 24-opening and 22-opening folding and pasting, the paper is hooked by the 32-opening hook on the second folding cylinder 200 after being folded on the gripper cylinder 100, and then is folded again, therefore the piston rod of the auxiliary wire belt lifting cylinder 56 is retracted, the guide rail frame is raised to the highest point, and the main auxiliary wire belt wheel 61 is located above the first wire belt wheel 110 of the folding and pasting conveying wire belt (see Figure 3 and Figure 3a), at this time the guide plate 17 can better paste the folded paper on the two-fold cylinder 200 for two-fold, when the folded paper is brought to the paper outlet side by the toothed cylinder 100, the folded paper is sent to the folded paper conveying line belt by the auxiliary line belt 65, and is sent to the 16-opening knife mechanism 400 and the newspaper outlet table 300 by the upper line belt 16 and the lower line belt 47 of the folded paper conveying line belt, and the auxiliary line belt 65 is used to peel off the folded paper that may be pasted on the two-fold cylinder 200 after two-fold.

[0074] The two working modes of the auxiliary paper guide mechanism of the folding machine with specification switching of the present application are that the guide plate 17 is always close to the two-fold cylinder 200 (closed state), and the extension and retraction of the piston rod of the auxiliary line belt lifting cylinder 56 is controlled by the switching system.

[0075] When the folding machine is in the 8-opening and 16-opening folding mode, the two-position five-way manual valve 10 is right-way open, and the two-position five-way electromagnetic valve 30 is left-way open, at this time the first pneumatic control valve 40 and the second pneumatic control valve 60 are both in the open state, the first mechanical valve 20 is in the open state, and the second mechanical valve 50 is in the closed state, so that the piston rod of the line belt front-end retracting and extending cylinder 21 is extended, the guide plate 17 is closed (close to the two-fold cylinder 200), the piston rod of the auxiliary line belt lifting cylinder 56 is extended, the auxiliary line belt 65 is lowered, and the rodless cavity of the line belt tensioning cylinder 31 is supplied with air to extend the piston rod, so that the upper line belt 16 is tensioned (see Figure 4a ).

[0076] When the guide plate 17 is stuck or needs to be repaired, the operator needs to move the guide plate 17 of the folded paper conveying line belt away from the two-fold cylinder 200 (open state). Due to the structural relationship between the guide plate 17 and the auxiliary line belt 65, the guide plate 17 needs to be opened after ensuring that the auxiliary line belt 65 is retracted to the highest point. After the repair is completed, the guide plate 17 needs to be completely closed before the auxiliary line belt 65 can be lowered. If the operation is wrong, the danger of collision between the guide plate 17 and the auxiliary line belt 65 will occur. In order to avoid the danger caused by the wrong operation, as long as the two-position five-way manual valve 10 is turned to the left-way open, the two-position five-way electromagnetic valve 30 remains in the left-way open, at this time the first pneumatic control valve 40 and the second pneumatic control valve 60 are both in the closed state, so that the rodless cavity of the line belt tensioning cylinder 31 is in a pressureless state, resulting in the relaxation of the upper line belt 16; the air path enters the rod cavity of the auxiliary line belt lifting cylinder 56 through the left end of the shuttle valve 70, causing the piston rod to retract, so that the auxiliary line belt 65 is lifted, the retraction of the piston rod of the auxiliary line belt lifting cylinder 56 causes the second induction plate 50A on the outer side of the guide rail 51 to trigger the second mechanical valve 50 to conduct, so that the air path enters the rod cavity of the line belt front-end retracting and extending cylinder 21, causing the piston rod to retract, thereby opening the guide plate 17, and the retraction of the piston rod of the line belt front-end retracting and extending cylinder 21 causes the first induction plate 20A to disengage the first mechanical valve 20, so that the first mechanical valve 20 becomes in the closed state (see Figure 4b) When the maintenance is completed, the two-position five-way manual valve 10 is re-displaced to the right path, the first gas control valve 40 and the second gas control valve 60 are re-conducted, the rodless cavity of the line tape front end retracting and releasing cylinder 21 is ventilated, the piston rod is extended, the paper guide plate 17 is closed, and the first mechanical valve 20 becomes a pass-through state. The gas circuit passes through the left path of the two-position five-way electromagnetic valve 30, enters the rodless cavity of the auxiliary line tape lifting cylinder 56 through the second gas control valve 60, and causes the piston rod to extend, so that the auxiliary line tape 65 is lowered to the lowest point. Because the first gas control valve 40 is conducted, the rodless cavity of the line tape tensioning cylinder 31 has pressure, causing the upper line tape 16 to be tensioned.

[0077] When the folding machine is in the 24-opening and 32-opening folding mode, the two-position five-way manual valve 10 is in the right path, the two-position five-way electromagnetic valve 30 is in the right path, the gas circuit enters the rod cavity of the auxiliary line tape lifting cylinder 56 through the right end of the shuttle valve 70, causing the piston rod to retract, i.e. lifting the auxiliary line tape 65. The first mechanical valve 20 is in a pass-through state, and the second mechanical valve 50 is in a cut-off state, causing the piston rod of the line tape front end retracting and releasing cylinder 21 to extend, causing the paper guide plate 17 to approach the two-fold roller 200 (closed state), the piston rod of the auxiliary line tape lifting cylinder 56 to extend, causing the auxiliary line tape 65 to descend, and the piston rod of the line tape tensioning cylinder 31 to extend, causing the upper line tape 16 to be tensioned (see Figure 4c ).

[0078] When the paper guide plate 17 is stuck or needs to be maintained, the operator needs to move the paper guide plate 17 of the folding and pasting conveying line away from the two-fold roller 200. Due to the structural relationship between the paper guide plate 17 and the auxiliary line tape 65, the paper guide plate 17 needs to be opened after ensuring that the auxiliary line tape 65 is retracted to the highest point. After the maintenance is completed, the paper guide plate 17 also needs to be completely closed before the auxiliary line tape 65 can be lowered. If the operation is incorrect, the danger of the paper guide plate 17 colliding with the auxiliary line tape 65 will occur. In order to avoid the danger caused by incorrect operation, as long as the two-position five-way manual valve 10 is displaced to the left path, the two-position five-way electromagnetic valve 30 remains in the right path, at this time the first gas control valve 40 and the second gas control valve 60 are both in a cut-off state, causing the rodless cavity of the line tape tensioning cylinder 31 to be in a pressure-free state, causing the upper line tape 16 to be relaxed; the gas circuit enters the rod cavity of the auxiliary line tape lifting cylinder 56 through the right end of the shuttle valve 70, causing the piston rod to retract, lifting the auxiliary line tape 65, and the retraction of the piston rod of the auxiliary line tape lifting cylinder 56 causes the second sensing plate 50A on the outer side of the guide rail 51 to trigger the second mechanical valve 50 to be conducted, causing the gas circuit to enter the rod cavity of the line tape front end retracting and releasing cylinder 21, causing the piston rod to retract, and further causing the paper guide plate 17 to open. The retraction of the piston rod of the line tape front end retracting and releasing cylinder 21 causes the first sensing plate 20A to disengage the first mechanical valve 20, causing the first mechanical valve 20 to become a cut-off state (see Figure 4d). When the maintenance is completed, the two-position five-way manual valve 10 is re-displaced to the right path, so that the first pneumatic control valve 40 and the second pneumatic control valve 60 are re-conducted, the second mechanical valve 50 is in the off state, the rodless chamber of the front end of the line belt retraction cylinder 21 is ventilated to cause the piston rod to extend, so that the paper guide plate 17 is closed, the first mechanical valve 20 is in the on state, the gas path passes through the right end of the shuttle valve 70 from the right path of the two-position five-way electromagnetic valve 30 to enter the rod chamber of the auxiliary line belt lifting cylinder 56 to cause the piston rod to retract, that is, the auxiliary line belt 65 is lifted, and due to the conduction of the first pneumatic control valve 40, the rodless chamber of the line belt tensioning cylinder 31 has pressure, causing the upper line belt 16 to be tensioned.

[0079] The above embodiments are only for illustrating the present application, not limiting the present application. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions should belong to the scope of the present application, which should be limited by the claims.

Claims

1. An auxiliary paper guiding mechanism of a folding machine with gauge switching, suitable for a three-roller type roll-folding folding machine, the folding machine comprising a cutting roller, a punching roller, a gripper roller, a second folding roller and a folding and sticking conveying line belt; the folding and sticking conveying line belt is arranged between the paper outlet side of the gripper roller and the upper side of a newspaper delivery table and comprises an upper line belt mechanism and a lower line belt mechanism; the upper line belt mechanism comprises a front support shaft, an upper front line belt wheel shaft, a rear support shaft, an upper rear line belt wheel shaft, a pair of front swing arms, an upper line belt, a paper guiding plate, a line belt front end retracting and releasing mechanism and a line belt tensioning mechanism; the front support shaft is arranged on the paper outlet side of the gripper roller, a first line belt wheel is arranged on the front support shaft through an elongated rod; the upper front line belt wheel shaft is arranged below and behind the front support shaft, a second line belt wheel is arranged on the upper front line belt wheel shaft; the rear support shaft is arranged between the two side wall plates of the folding machine and above the newspaper delivery table, a third line belt wheel is arranged on the rear support shaft through a rear swing arm; the upper rear line belt wheel shaft is arranged on the driving side wall plate and the operating side wall plate of the folding machine through bearings at both ends respectively and above the upper front line belt wheel shaft, a fourth line belt wheel is arranged on the upper rear line belt wheel shaft; the front swing arms are inverted isosceles triangles, the bottom rear ends of the pair of front swing arms are hingedly connected to the two ends of the upper rear line belt wheel shaft respectively, the bottom front ends of the pair of front swing arms are fixedly connected to the two ends of the front support shaft respectively, and the top of the pair of front swing arms is hingedly connected to the two ends of the upper front line belt wheel shaft respectively; the upper line belt sequentially passes the first line belt wheel clockwise, the second line belt wheel clockwise, the third line belt wheel clockwise and the fourth line belt wheel counterclockwise; the paper guiding plate is arranged on the elongated rod and in front of the first line belt wheel, and the paper guiding plate is close to the second folding roller; the line belt front end retracting and releasing mechanism comprises a line belt front end retracting and releasing cylinder arranged on the driving side wall plate of the folding machine, a front swing arm connecting rod connected between the piston rod of the line belt front end retracting and releasing cylinder and a front swing arm close to the driving side wall plate, a first sensing plate arranged on the operating side end of the upper rear line belt wheel shaft, and a first machine control valve arranged on the operating side wall plate and below the first sensing plate; the line belt tensioning mechanism comprises a line belt tensioning cylinder arranged on the driving side wall plate of the folding machine, and the piston rod of the line belt tensioning cylinder is connected to one end of the rear support shaft; the lower line belt mechanism comprises a lower front line belt wheel, a lower rear line belt wheel and a lower line belt; the lower front line belt wheel is arranged below and behind the upper front line belt wheel shaft through a lower front line belt wheel shaft; the lower rear line belt wheel is arranged above and in front of the newspaper delivery table through a lower rear line belt wheel shaft; the lower line belt is wrapped between the lower front line belt wheel and the lower rear line belt wheel; characterized in that, the auxiliary paper guiding mechanism comprises an auxiliary line belt mechanism and a switching system; the auxiliary line belt mechanism comprises a guide rail frame, two pairs of guide rail wheels, an auxiliary line belt lifting mechanism, a main auxiliary line belt wheel, an upper auxiliary line belt wheel, a lower auxiliary line belt wheel and an auxiliary line belt. The guide rail frame is arranged above the paper outlet side of the toothed roller and comprises a pair of guide rails arranged on the inner side of the driving side wall plate and the inner side of the operating side wall plate, a top support shaft spanning between the upper ends of the pair of guide rails, a middle support shaft spanning between the middle portions of the pair of guide rails, and a main auxiliary line belt pulley shaft spanning between the lower ends of the pair of guide rails; The two pairs of guide rail wheels are installed on the inner side surfaces of the driving side wall plate and the operating side wall plate in one-to-one correspondence and are connected to the pair of guide rails in one-to-one correspondence; The auxiliary line belt lifting mechanism comprises an auxiliary line belt lifting cylinder mounted on the inner side surface of the driving side wall plate through a support, a second machine control valve mounted on the inner side surface of the operating side wall plate, and a second sensing plate mounted on the outer side surface of the guide rail close to the operating side wall plate, and the piston rod of the auxiliary line belt lifting cylinder is connected to the middle portion of the middle support shaft of the guide rail frame; The main auxiliary line belt pulley is mounted on the main auxiliary line belt pulley shaft of the guide rail frame; The top auxiliary line belt pulley is mounted above the two-fold roller through a top auxiliary line belt pulley shaft; The bottom auxiliary line belt pulley is mounted below the two-fold roller through a bottom auxiliary line belt pulley shaft; The auxiliary line belt is wound around the main auxiliary line belt pulley, the top auxiliary line belt pulley, and the bottom auxiliary line belt pulley, and the auxiliary line belt between the main auxiliary line belt pulley and the bottom auxiliary line belt pulley is attached to the rear side surface of the two-fold roller, and the auxiliary line belt between the top auxiliary line belt pulley and the bottom auxiliary line belt pulley is attached to the front side surface of the two-fold roller; The switching system comprises a two-position five-way manual valve, a two-position five-way electromagnetic valve, a first air control valve, a second air control valve, and a shuttle valve; the air inlet of the two-position five-way manual valve is communicated with the air source, the right outlet of the two-position five-way manual valve is respectively communicated with the pressure signal inlet of the first air control valve, the pressure signal inlet of the second air control valve, the air inlet of the first machine control valve, and the rodless chamber of the line belt front end retracting and extending cylinder, the left outlet of the two-position five-way manual valve is respectively communicated with the right inlet of the shuttle valve and the air inlet of the second machine control valve; the outlet of the first machine control valve is communicated with the air inlet of the two-position five-way electromagnetic valve; the outlet of the second machine control valve is communicated with the rod chamber of the line belt front end retracting and extending cylinder; the right outlet of the two-position five-way electromagnetic valve is communicated with the left inlet of the shuttle valve, and the left outlet of the two-position five-way electromagnetic valve is communicated with the air inlet of the second air control valve; the air inlet and outlet of the first air control valve are respectively communicated with the air source and the rodless chamber of the line belt tensioning cylinder in one-to-one correspondence; the air inlet and outlet of the second air control valve are respectively communicated with the left outlet of the two-position five-way electromagnetic valve and the rodless chamber of the auxiliary line belt lifting cylinder in one-to-one correspondence; the outlet of the shuttle valve is communicated with the rod chamber of the auxiliary line belt lifting cylinder.

2. The auxiliary paper guiding mechanism of a folding machine with format change according to claim 1, characterized in that The upper line belt mechanism further comprises a first line belt pulley, a second line belt pulley and a third line belt pulley arranged in sequence behind and above the fourth line belt pulley, a fourth line belt pulley arranged in front of and below the third line belt pulley, a fifth line belt pulley arranged behind and below the fourth line belt pulley, and a sixth line belt pulley arranged behind the second line belt pulley, so that the upper line belt is sequentially wound clockwise around the first line belt pulley, the second line belt pulley, the sixth line belt pulley and the fifth line belt pulley, then counterclockwise around the fourth line belt pulley, and then sequentially clockwise around the third line belt pulley, the third line belt pulley, the second line belt pulley and the first line belt pulley, and then counterclockwise around the fourth line belt pulley.

3. The auxiliary paper guiding mechanism of the folding machine with format change according to claim 1, characterized in that, The lower line belt mechanism further comprises a first lower line belt pulley and a second lower line belt pulley arranged in sequence behind the lower front line belt pulley, and a third lower line belt pulley and a fourth lower line belt pulley arranged in front of and above the lower rear line belt pulley in one-to-one correspondence, so that the lower line belt is sequentially wound clockwise around the lower front line belt pulley and the first lower line belt pulley, then counterclockwise around the second lower line belt pulley and the third lower line belt pulley, and then sequentially clockwise around the fourth lower line belt pulley and the lower rear line belt pulley.

4. The auxiliary paper guiding mechanism of the folding machine with format change according to claim 1, characterized in that, A front swing arm shaft is arranged between the bottoms of a pair of front swing arms in the upper line belt mechanism.

5. The auxiliary paper guiding mechanism of the folding machine with format change according to claim 1, characterized in that, The auxiliary line belt mechanism further comprises a line belt tensioning pulley arranged between the front lower side of the upper auxiliary line belt pulley and the front upper side of the two-fold cylinder, so that the auxiliary line belt is sequentially wound clockwise around the main auxiliary line belt pulley and the upper auxiliary line belt pulley, then counterclockwise around the line belt tensioning pulley, and then clockwise around the lower auxiliary line belt pulley.

6. The auxiliary paper guiding mechanism of the folding machine with format change according to claim 1, characterized in that, The two-position five-way electromagnetic valve in the switching system is controlled by PLC or manually controlled. The two-position five-way electromagnetic valve in the switching system is controlled by PLC or manually controlled.

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