Walking control structure of screen printing machine

Abstract

The utility model relates to the technical field of screen printing machines, in particular to a walking control structure of a screen printing machine, which comprises a working table, a track arranged on the working table, a plurality of upright posts arranged on the track, a horizontally arranged bottom plate arranged on the working table, a front top frame plate arranged on the bottom plate and extending along the left-right direction. A driving assembly is arranged on the left side of the bottom plate and comprises a driving motor, a speed reducer is arranged at the lower end of the driving motor, and a driving wheel is arranged at the front end of the speed reducer; a guide assembly is arranged at the lower end of the bottom plate and comprises an outer guide wheel, a crank arm is arranged at the upper end of the outer guide wheel, a plurality of screws are arranged on the crank arm, a plurality of screws are arranged on the rear side of the crank arm, a tension spring is arranged between the screws on the front side and the rear side, and an inner guide wheel is arranged on the rear side of the outer guide wheel; a positioning assembly is arranged on the front top frame plate and comprises a speed reduction switch, a net falling switch is arranged on the left side of the speed reduction switch, a parking switch is arranged on the left side of the net falling switch, and the device reduces the equipment assembly and maintenance difficulty while guaranteeing the precision.

Description

TECHNICAL FIELD

[0001] The utility model relates to a silk screen printing machine technical field, concretely relates to a silk screen printing machine's walking control structure. BACKGROUND

[0002] The silk screen printing machine is a kind of equipment using silk screen hole to print, and its working principle is to press the ink from silk screen, makes silk screen produce deformation, to press out ink, forms printing, and the silk screen printing machine is widely used in the printing of various materials and products, and its high precision, high efficiency and high flexibility make it become indispensable printing equipment in printing industry.

[0003] For example, the patent application with the application publication number CN107215085A discloses a high-precision running track printing machine, which has a walking component, and the walking component is driven by gear and rack cooperation to realize high-precision printing operation of the running track printing machine.

[0004] However, the above-mentioned running track printing machine still has some defects: the above-mentioned running track printing machine is driven by gear and rack cooperation to move back and forth, and the walking component structure of the equipment is complex, and the assembly and maintenance are difficult, and the transformation cost is high for the existing manual printing production line. UTILITY MODEL CONTENTS

[0005] The utility model provides a silk screen printing machine's walking control structure to solve the technical problem that the walking component structure of existing running track printing machine is complex, which leads to high assembly and maintenance difficulty and high transformation cost.

[0006] To solve the above-mentioned problem, the walking control structure of the silk screen printing machine provided by the utility model adopts the following technical scheme:

[0007] A walking control structure of a silk screen printing machine, comprising a workbench, the workbench is provided with a track, the track is provided with a plurality of columns, the workbench is further provided with a horizontally arranged bottom plate, the bottom plate is provided with a front top frame plate, the front top frame plate extends along the left-right direction, the left side of the bottom plate is provided with a driving assembly, the driving assembly comprises a driving motor, the lower end of the driving motor is provided with a speed reducer, the front end of the speed reducer is provided with a driving wheel;

[0008] The lower end of the left and right sides of the bottom plate is provided with a guide assembly, which comprises an outer guide wheel located at the front end of the bottom plate, the outer guide wheel is provided with a curved arm hinged to the front top frame plate on the upper end, a plurality of screws are arranged on the curved arm, a plurality of screws are arranged on the back side of the curved arm on the bottom plate, a tension spring is arranged between the screws on the front and back sides, the back side of the outer guide wheel is provided with an inner guide wheel fixed on the bottom plate, so as to realize the guidance by clamping the track by the inner guide wheel and the outer guide wheel;

[0009] The front top frame plate is provided with a positioning assembly matched with the stand column, the positioning assembly comprises a deceleration switch, the left side of the deceleration switch is provided with a net falling switch, and the left side of the net falling switch is provided with a parking switch, so as to realize positioning by detecting the position of the stand column.

[0010] The beneficial effects are that the screen printing machine can move along the track through the track and the guide assembly, the equipment can control the equipment to decelerate, net falling and parking through detecting the position of the track stand column through the positioning assembly arranged on the front top frame plate, the precision is ensured, the difficulty of equipment assembly and maintenance is reduced, and the equipment modification cost is reduced.

[0011] Further, the bottom plate comprises horizontally arranged left and right bottom plates, and the front top frame plate is located between the left and right bottom plates; the front top frame plate is provided with a plurality of sensing supports, the deceleration assembly and the net falling assembly are fixed at the lower end of the sensing supports, and the front top frame plate is further provided with a touch sensing support for fixing the parking switch.

[0012] Further, the front top frame plate has a lifting motor at the upper end, the lower end is defined as an output end, the lifting motor has a screw rod extending upward and downward at the lower end, a nut is arranged on the screw rod, and a reference block is sleeved on the outer periphery of the nut.

[0013] Further, the reference block has a parking positioning mechanism at the lower end, which comprises a leftward extending guide rod located at the left side of the reference block, the left end of the guide rod has a stop block, an L-shaped block for pushing the stand column is arranged on the guide rod, a spring is arranged between the L-shaped block and the stop block, and a front and back extending sensing plate matched with the parking switch is arranged on the front side of the L-shaped block.

[0014] The beneficial effects are that the parking positioning mechanism enables the screen printing machine to trigger the parking switch by pushing the L-shaped plate with the stand column, thereby improving the moving precision of the screen printing machine.

[0015] Further, the left bottom plate is provided with a floating mechanism at the lower end for overcoming the inertia of the motor, which comprises left and right extending slide rails fixed on the left bottom plate, limit blocks are arranged on the front and back sides of the slide rails, a sliding block is arranged on the slide rail, and a connecting plate is fixed at the lower end of the sliding block.

[0016] The beneficial effects are that the design of the floating mechanism overcomes the inertia of the driving motor, so that the driving motor operates more smoothly, and the stability of the equipment operation is improved.

[0017] Further, the right end of the deceleration machine has a turning bearing seat, bearings are arranged at the upper and lower ends of the turning bearing seat, a turning shaft extending upward and downward is arranged in the bearings, and the lower end of the turning shaft is rotationally connected with the connecting plate.

[0018] Further, the reducer left end is provided with front and back extending turning limiting plates, the left side of the front and back ends of the turning limiting plates is provided with rectangular connecting seats, a plurality of front and back extending light shafts are arranged between the connecting seats, the light shafts are slidably provided with rectangular sliding seats, the lower end of the sliding seat is provided with an outer guide wheel, the lower end of the front end connecting seat is provided with an inner guide wheel, a tension spring is arranged between the front end connecting seat and the sliding seat to enable the outer guide wheel and the inner guide wheel to clamp the track.

[0019] Further, the left bottom plate lower end rear side and the right bottom plate lower end front and back sides are provided with universal wheels to support the bottom plate.

[0020] Further, the front top frame plate is provided with a hinge seat for hingedly connecting the curved arm, and the hinge seat is provided with a curved arm pin for fixing the curved arm.

[0021] Further, the track comprises horizontal tracks extending left and right on the front and back sides of the workbench and U-shaped tracks on the left and right sides of the workbench, the horizontal tracks and the U-shaped tracks are alternately connected to form a closed loop, and the vertical columns are equidistantly arranged on the horizontal tracks.

[0022] The walking control structure of the screen printing machine has the following beneficial effects:

[0023] 1. The track and the guide assembly are arranged to enable the screen printing machine to move along the track, the positioning assembly is arranged on the front top frame plate to enable the equipment to control the equipment to slow down, fall into the net and stop by detecting the position of the track column, the accuracy is ensured, the difficulty of equipment assembly and maintenance is reduced, and the equipment modification cost is also reduced.

[0024] 2. The arrangement of the parking positioning mechanism enables the screen printing machine to trigger the parking switch by pushing the L-shaped plate with the column, and improves the moving accuracy of the screen printing machine.

[0025] 3. The design of the floating mechanism overcomes the motor inertia of the driving motor, enables the driving motor to run more smoothly, and improves the stability of the equipment operation. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which several embodiments of the present application are shown by way of example, and wherein like reference numerals refer to like elements throughout. In the drawings:

[0027] Figure 1 FIG. 1 is a general structural diagram of a walking control structure of a screen printing machine according to the present application;

[0028] Figure 2 FIG. 4 is a structural diagram of a workbench according to the present application;

[0029] Figure 3 Fig. 1 is a structural schematic diagram of the driving assembly in the present application; Figure 1

[0030] Figure 4 Fig. 2 is a structural schematic diagram of the floating mechanism in the present application; Figure 3

[0031] Figure 5 Fig. 3 is a structural schematic diagram of the guiding assembly in the present application; Figure 1

[0032] Figure 6 Fig. 4 is a structural schematic diagram of the parking positioning mechanism in the present application; Figure 1 Figure 1

[0033] Figure 7 Fig. 5 is a structural schematic diagram of the parking positioning mechanism in the present application; Figure 1 Figure 2

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 1, workbench; 2, track; 21, horizontal track; 22, U-shaped track; 23, upright column; 3, bottom plate; 31, left bottom plate; 32, right bottom plate; 33, front top frame plate;

[0036] 4, driving assembly; 41, driving motor; 42, speed reducer; 43, floating mechanism; 431, sliding rail; 432, sliding block; 433, limiting block; 434, connecting plate; 435, turning bearing seat; 436, bearing; 437, turning shaft; 44, driving wheel; 45, turning limiting plate; 451, connecting seat; 452, optical axis; 453, sliding seat; 454, outer guide wheel; 455, inner guide wheel; 456, screw; 457, tension spring; 46, universal wheel;

[0037] 5, guiding assembly; 51, curved arm; 52, hinged seat; 53, curved arm pin; 54, guide wheel shaft;

[0038] 6, positioning assembly; 61, lifting motor; 62, motor seat; 63, screw rod; 64, nut; 65, reference block; 66, parking positioning mechanism; 661, guide rod; 662, stop block; 663, spring; 664, L-shaped block; 665, sensing plate; 666, parking switch; 667, touch sensing support; 67, deceleration switch; 68, net falling switch; 69, sensing support. DETAILED DESCRIPTION

[0039] ​​​​​​​The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be known by those skilled in the art that the embodiments described below are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0040] The main idea of the present application is that the screen printing machine can move along the track 2 by setting the track 2 and the guide assembly 5, and the positioning assembly 6 is arranged on the front top frame plate 33 to enable the device to control the device to decelerate, net and stop by detecting the position of the column 23 on the track 2, thereby reducing the difficulty of device assembly and maintenance while ensuring accuracy, and reducing the device modification cost.

[0041] After introducing the basic principle of the present application, the various non-limiting embodiments of the present application will be specifically introduced below. Any element quantity in the drawings is used for example but not limitation, and any naming is only used for distinction, and does not have any limiting meaning.

[0042] The principle and spirit of the present application will be explained in detail below with reference to several representative embodiments of the present application.

[0043] Embodiment 1 of the walking control structure of the screen printing machine provided by the present application:

[0044] As shown in the drawing, Figures 1 to 7 The walking control mechanism comprises a workbench 1, the workbench 1 is provided with a track 2, the track 2 comprises horizontal tracks 21 extending left and right on the front and back sides of the workbench 1 and U-shaped tracks 22 on the left and right sides of the workbench 1, the horizontal tracks 21 and the U-shaped tracks 22 are alternately connected to form a closed loop, the horizontal tracks 21 are provided with cylindrical columns 23 arranged at equal intervals, and the columns 23 are used for positioning the screen printing machine.

[0045] The workbench 1 is also provided with a horizontally arranged bottom plate 3, the bottom plate 3 comprises a left bottom plate 31 and a right bottom plate 32, a front top frame plate 33 extending left and right is arranged between the left bottom plate 31 and the right bottom plate 32, a driving assembly 4 for driving the screen printing machine is arranged on the left side of the left bottom plate 31; the bottom plate 3 is provided with a guide assembly 5 cooperating with the track 2 at the lower ends of the left and right sides of the bottom plate 3, so that the screen printing machine moves along the track 2; the front top frame plate 33 is provided with a positioning assembly 6 cooperating with the column 23, and the positioning assembly 6 is used for controlling the device to stop.

[0046] Firstly, the driving assembly 4 is introduced below, the driving assembly 4 includes driving motor 41, the lower end of driving motor 41 has speed reducer 42, the front side of speed reducer 42 has driving wheel 44, the right end of speed reducer 42 is equipped with turning shaft 437 bearing 436 seat 435, turning shaft 437 bearing 436 seat 435 is semicircular columnar structure, the upper and lower ends of turning shaft 437 bearing 436 seat 435 are equipped with bearing 436, bearing 436 is equipped with the turning shaft 437 of upper and lower extension in the inside, the lower end of the left bottom plate 31 is equipped with the floating mechanism 43 for overcoming motor inertia, the floating mechanism 43 includes the left and right extension slide rail 431 fixed in the left bottom plate 31, the rectangular slide block 432 is correspondingly provided on the slide rail 431, the front and rear ends of slide rail 431 have limit block 433, the lower end of slide block 432 has the left and right extension connecting plate 434 fixedly connected therewith, the lower end of the turning shaft 437 is rotatably connected with the connecting plate 434 to enable the driving assembly 4 to adjust the direction along with the track 2.

[0047] In addition, the left end of speed reducer 42 is equipped with the front and rear extension rectangular turning limit plate 45, the left side of rectangular turning limit plate 45 has the front and rear ends of rectangular connecting seat 451, a plurality of front and rear extension light shafts 452 are arranged in parallel between connecting seat 451, the rectangular slide seat 453 is slidably arranged on the light shaft 452, the outer guide wheel 454 is arranged on the lower end of slide seat 453, the inner guide wheel 455 is arranged on the lower end of front connecting seat 451, the screw 456 is arranged on the front and rear ends of slide seat 453 and front connecting seat 451, the pull spring 457 is arranged between the front and rear screws 456 to enable the outer guide wheel 454 and the inner guide wheel 455 to clamp the track 2.

[0048] The guide assembly 5 is introduced below, the guide assembly 5 includes two outer guide wheels 454 respectively arranged on the lower end of the front side of the left bottom plate 31 and the lower end of the front side of the right bottom plate 32, the upper end of outer guide wheel 454 is equipped with the up and down extension guide wheel shaft 54, the guide wheel shaft 54 is equipped with the curved arm 51 on the upper end, the curved arm 51 and the guide wheel shaft 54 are fixedly connected, the left and right sides of the front top frame plate 33 are both equipped with the hinged seat 52, the curved arm pin 53 is arranged on the hinged seat 52, the curved arm 51 is hinged on the front top frame plate 33 through the hinged seat 52 and the curved arm pin 53.

[0049] The rear end of the two outer guide wheels 454 is correspondingly equipped with the inner guide wheel 455, the upper end of the inner guide wheel 455 has the guide wheel shaft 54, and the guide wheel shaft 54 is fixed on the bottom plate 3; a plurality of screws 456 are arranged on the curved arm 51, a plurality of screws 456 are also correspondingly arranged on the bottom plate 3 on the rear side of the curved arm 51, and the pull spring 457 is arranged between the front and rear screws 456 to drive the outer guide wheel 454 to clamp the track 2 with the inner guide wheel 455, so that the equipment moves along the track 2.

[0050] The positioning assembly 6 is introduced below, which includes a deceleration switch 67 located on the front side of the front top frame plate 33, and a netting switch 68 located on the left side of the deceleration switch 67. The deceleration switch 67 and the netting switch 68 are proximity switches, which are used in cooperation with the stand 23 to realize the deceleration and netting actions of the device. The rear side of the deceleration switch 67 and the netting switch 68 is provided with a sensing bracket 69, which is used to fix the deceleration switch 67 and the netting switch 68.

[0051] In addition, the front top frame plate 33 is provided with a motor seat 62 at the upper end, and the motor seat 62 is provided with a lifting motor 61 located on the front side of the front top frame plate 33. The output end of the lifting motor 61 is defined as the lower end. The lower end of the lifting motor 61 has a screw rod 63 extending upward and downward. The lower end of the screw rod 63 has a nut 64 matched therewith. The outer periphery of the nut 64 is sleeved with a reference block 65 extending upward and downward. The reference block 65 is provided with a parking positioning mechanism 66 at the lower end. The parking positioning mechanism 66 includes a guide rod 661 extending to the left and located on the left side of the reference block 65 and at the lower end of the reference block 65. The left end of the guide rod 661 is provided with a stop block 662. The guide rod 661 is provided with an L-shaped block 664 extending left and right for pushing the stand 23. The lower end of the L-shaped block 664 is arranged in the lower end of the reference block 65. A spring 663 is arranged between the L-shaped block 664 and the stop block 662 to push the L-shaped block 664 back to the original position. The front side of the L-shaped block 664 is provided with a sensing plate 665 extending forward and backward. The left side of the sensing plate 665 is provided with a touch sensing bracket 667. The front side of the touch sensing bracket 667 is fixed with a parking switch 666. The parking switch 666 is used in cooperation with the sensing plate 665 to realize the parking action of the device.

[0052] Finally, the rear side of the lower end of the left bottom plate 31 and the front and rear sides of the lower end of the right bottom plate 32 are provided with universal wheels 46. The universal wheels 46 are used to support the bottom plate 3 and drive the device to move in cooperation with the driving assembly 4.

[0053] The working principle of the walking control mechanism is as follows: firstly, the device is driven to move rightwards by the driving motor 41, at this time, the guide assembly 5 below the bottom plate 3 clamps the track 2 to limit the movement of the device along the track 2, when the deceleration switch 67 detects the column 23 on the track 2, the deceleration switch 67 controls the driving motor 41 to complete the deceleration action of the device, when the netting switch 68 detects the column 23 of the track 2, the netting switch 68 controls the lifting motor 61 to realize the descent of the reference block 65 through the transmission of the screw rod 63 and the screw nut 64, the descent of the reference block 65 drives the parking positioning mechanism 66 to descend, at this time, the right end of the L-shaped plate is pushed to move leftwards by the column 23 during the movement of the screen printing machine, the leftward movement of the L-shaped plate causes the spring 663 to be squeezed and drives the inductive plate 665 to move leftwards, when the inductive plate 665 moves to the inductive distance of the parking switch 666, the parking switch 666 controls the driving motor 41 to complete the parking action of the device, at this time, the device performs the printing operation, after the printing operation is completed, the lifting motor 61 controls the parking positioning mechanism 66 to ascend, at this time, the spring 663 pushes the L-shaped plate to reset, and the device moves rightwards to perform the next printing operation.

[0054] Embodiment 2 of the walking control structure of the screen printing machine provided by the utility model:

[0055] The difference between the embodiment 1 and the embodiment 2 is mainly that:

[0056] In the embodiment 1, the tension spring is fixed on the screw.

[0057] In the embodiment, the tension spring is located between the inner guide wheel and the outer guide wheel.

[0058] Embodiment 3 of the walking control structure of the screen printing machine provided by the utility model:

[0059] The difference between the embodiment 1 and the embodiment 3 is mainly that:

[0060] In the embodiment 1, the driving wheel is located at the front side of the speed reducer.

[0061] In the embodiment, the driving wheel is located at the rear side of the speed reducer.

[0062] According to the above description of the present specification, those skilled in the art can also understand that the terms used, such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present specification, and are only for the purpose of facilitating the description of the scheme of the utility model and simplifying the description, and do not explicitly or implicitly indicate or imply that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation, therefore the above orientation or positional relationship terms cannot be understood or interpreted as a limitation on the scheme of the utility model.

[0063] Also in the description of the present specification, the meaning of "a plurality of" is at least two, for example, two, three or more, etc., unless explicitly specifically limited otherwise.

Claims

1. A walking control structure of a screen printing machine, comprising a workbench, a track provided on the workbench, a plurality of columns provided on the track, and a horizontally arranged bottom plate provided on the workbench, wherein a front top frame plate is provided on the bottom plate, and the front top frame plate extends in the left-right direction, characterized in that: a driving assembly is provided on the left side of the bottom plate, the driving assembly comprises a driving motor, the lower end of the driving motor is provided with a speed reducer, and the front end of the speed reducer is provided with a driving wheel; a guiding assembly is provided on the lower ends of the left and right sides of the bottom plate, the guiding assembly comprises an outer guiding wheel provided at the front end of the bottom plate, an articulated arm is provided on the upper end of the outer guiding wheel and hinged to the front top frame plate, a plurality of screws are provided on the articulated arm, a plurality of screws are correspondingly provided on the rear side of the articulated arm on the bottom plate, a tension spring is arranged between the screws on the front and rear sides, and an inner guiding wheel is fixed to the bottom plate on the rear side of the outer guiding wheel, so as to realize guiding by clamping the track by the inner guiding wheel and the outer guiding wheel; a positioning assembly is provided on the front top frame plate and used for positioning by cooperating with the columns, the positioning assembly comprises a speed reduction switch, a net falling switch is provided on the left side of the speed reduction switch, and a parking switch is provided on the left side of the net falling switch; and the speed reduction switch and the net falling switch are fixed to the lower end of a sensing support, a touch sensing support is further provided on the front top frame plate, and the parking switch is fixed to the touch sensing support. The bottom plate comprises a left bottom plate and a right bottom plate arranged horizontally, and the front top frame plate is located between the left bottom plate and the right bottom plate; a plurality of sensing supports are provided on the front top frame plate, the speed reduction switch and the net falling switch are fixed to the lower end of the sensing support, and a touch sensing support is further provided on the front top frame plate and used for fixing the parking switch. The upper end of the front top frame plate is provided with a lifting motor, the lower end of the lifting motor is defined as an output end, the lower end of the lifting motor is provided with a screw rod extending upward and downward, a nut is arranged on the screw rod, and a reference block is sleeved on the outer circumferential surface of the nut. The lower end of the reference block is provided with a parking positioning mechanism, the parking positioning mechanism comprises a leftward extending guiding rod provided on the left side of the reference block, the left end of the guiding rod is provided with a stop block, an L-shaped block for pushing the column is arranged on the guiding rod, a spring is arranged between the L-shaped block and the stop block, and a front-rear extending sensing plate is arranged on the front side of the L-shaped block and used for cooperating with the parking switch.

2. The walking control structure of a screen printing machine according to claim 1, wherein, The lower end of the left bottom plate is provided with a floating mechanism for overcoming the inertia of the motor, the floating mechanism comprises left and right extending slide rails fixed to the left bottom plate, limit blocks are arranged on the front and rear sides of the slide rails, a sliding block is arranged on the slide rail, and a connecting plate is fixed to the lower end of the sliding block.

3. The walking control structure of a screen printing machine according to claim 2, wherein, The right end of the speed reducer is provided with a turning bearing seat, bearings are arranged on the upper and lower ends of the turning bearing seat, a turning shaft extending upward and downward is arranged in the bearings, and the lower end of the turning shaft is rotationally connected to the connecting plate.

4. The walking control structure of a screen printing machine according to claim 3, wherein, The left end of the speed reducer is provided with a front-rear extending turning limiting plate, the left side of the turning limiting plate is provided with rectangular connecting seats on the front and rear ends, a plurality of front-rear extending light shafts are arranged between the connecting seats, a rectangular sliding seat is slidably arranged on the light shafts, an outer guiding wheel is arranged on the lower end of the sliding seat, an inner guiding wheel is arranged on the lower end of the front end connecting seat, and a tension spring is arranged between the front end connecting seat and the sliding seat, so that the outer guiding wheel and the inner guiding wheel clamp the track.

5. The walking control structure of a screen printing machine according to claim 4, wherein, The rear side of the lower end of the left bottom plate and the front and rear sides of the lower end of the right bottom plate are provided with universal wheels, so as to support the bottom plate.

6. The walking control structure of a screen printing machine according to claim 5, wherein, The front top frame plate is provided with a hinging seat for hinging the articulated arm, and the hinging seat is provided with an articulated arm pin for fixing the articulated arm.

7. The walking control structure of a screen printing machine according to claim 6, wherein The track comprises horizontal tracks extending leftward and rightward on the front and rear sides of the workbench and U-shaped tracks provided on the left and right sides of the workbench, the horizontal tracks and the U-shaped tracks are alternately connected to form a closed loop, and the columns are equidistantly arranged on the horizontal tracks.

8. The walking control structure of a screen printing machine according to claim 7, wherein, ​ 9. The walking control structure of a screen printing machine according to claim 8, wherein, ​ 10. The walking control structure of a screen printing machine according to claim 9, wherein, ​

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