CN117162649B - Device for continuously printing stock and working method thereof - Google Patents

Abstract

The invention provides equipment for continuously printing a printing stock and a working method thereof. Wherein, set up a plurality of stations in the frame, positioner, printing device, clamping device and pendulous device all are connected with the mount in the frame. When the device works, the connecting beam of the swinging device rotates to drive each clamping device to clamp and transfer printing materials on each station from the feed inlet to the discharge outlet in sequence through each positioning device in a transmission mode, so that a continuous printing material conveying process is formed. When the printing stock is transferred to the positioning device, the positioning device can clamp and fix the printing stock with the curved surface through the bottom die and the top nozzle, so that the printing head of the printing device moves downwards to press the screen printing plate and move, and printing is completed. Therefore, the invention can realize continuous conveying of the printing stock besides the printing stock with the printable curved surface, and automatically print the printing stock in the conveying process, thereby being very convenient.

Description

Device for continuously printing stock and working method thereof

Technical Field

The invention relates to the technical field of printing, in particular to equipment for continuously printing a printing stock and a working method thereof.

Background

Screen printing is to use a screen as a substrate and make a screen printing plate with graphics and texts by a photosensitive plate making method. During printing, the basic principle that the mesh of the image-text part of the screen printing plate can be penetrated by ink and the mesh of the non-image-text part can not be penetrated by ink is utilized for printing. When in specific printing, a printing stock is placed on a printing table, then a screen printing plate is covered on the printing stock, then ink is poured into one end of the screen printing plate, a certain pressure is applied to the ink part on the screen printing plate by using a scraping plate, meanwhile, the printing plate moves at a constant speed towards the other end of the screen printing plate, and the ink is extruded onto the printing stock from meshes of an image-text part by the scraping plate in the moving process.

However, the printing table is generally a flat platform, and when the appearance of the printing object is curved, it is difficult to place the printing object on the printing table smoothly, and the surface to be printed after the placement of the printing object cannot be kept upward. It can be seen that the printing apparatus in the prior art has difficulty in placing a substrate with a curved surface, and thus has difficulty in completing a printing job.

Disclosure of Invention

In order to overcome the defects of the background technology, the invention provides equipment for continuously printing a printing stock and a working method thereof.

The invention adopts the following technical scheme:

first aspect: an apparatus for continuously printing a substrate and a method of operating the same, the apparatus comprising:

the machine comprises a machine base, wherein a plurality of stations are arranged in the machine base, a mounting frame is arranged in the machine base, and stations positioned on two sides of the mounting frame in the machine base are a feed inlet and a discharge outlet respectively;

the positioning device is arranged at stations between the feeding hole and the discharging hole, the positioning device comprises a bottom die and a top nozzle, the bottom die is connected with the mounting frame, and the top nozzle moves relative to the bottom die so as to clamp a printing stock between the bottom die and the top nozzle;

the printing device comprises a screen printing plate and a printing head, the screen printing plate is positioned above the positioning device, the printing head is pressed downwards towards the screen printing plate, the screen printing plate is attached to a printing stock clamped by the positioning device, and the printing head is positioned on the screen printing plate to move;

the clamping device comprises a bottom plate and grippers, wherein the grippers are arranged on two sides of the bottom plate, and the two grippers are positioned on the bottom plate and move relatively to clamp a printing stock;

the swinging device comprises connecting beams which are positioned below the positioning devices and swing back and forth in a swinging manner relative to the two sides of the mounting frame;

the connecting beam is fixedly provided with a plurality of clamping devices, the clamping devices are located between two adjacent stations to swing in a reciprocating mode, and when the clamping devices swing to the lower portion of the positioning device, the grippers are located between the bottom die and the top nozzle.

In a possible implementation manner of the first aspect, the positioning device further includes a first motor, the first motor is disposed on the back of the mounting frame, and an output shaft of the first motor passes through the mounting frame and is fixedly connected with the bottom die.

In a possible implementation manner of the first aspect, the positioning device further includes a first driving cylinder, the front surface of the mounting frame is further fixed with a connecting frame, the first driving cylinder is fixed to the connecting frame, the telescopic rod of the first driving cylinder moves telescopically relative to the bottom die, and the top nozzle is fixed to the telescopic rod of the first driving cylinder.

The positioning device further comprises a fixing plate, a connecting plate and a third driving cylinder, wherein the connecting plate is fixed on the back of the mounting frame, the connecting plate is far away from the bottom of one end of the bottom die, the third driving cylinder is fixed on the bottom of the connecting plate, a telescopic rod of the third driving cylinder penetrates through the connecting plate, the tail end of the telescopic rod of the third driving cylinder is pivoted with one end of the fixing plate far away from the bottom die, and the fixing plate is close to one end of the bottom die and connected with the connecting plate to form a mutually rotating structure.

In a possible implementation manner of the first aspect, the printing apparatus further includes a triaxial moving mechanism, the triaxial moving mechanism is disposed on the mounting frame, and the triaxial moving mechanism drives three axial movements of the print head relative to the screen plate.

In a feasible implementation manner of the first aspect, the printing device further includes a clamping seat, a clamping piece and a clamping screw, the clamping seat is connected to the mounting frame, the clamping seat is connected to both ends of the front face of the mounting frame, the clamping piece faces towards one face in the middle of the clamping seat to be provided with a concave placing groove, two sides of the screen printing plate are respectively embedded in the placing groove, and the clamping screw spirally penetrates into the clamping piece to press towards the screen printing plate.

In a possible implementation manner of the first aspect, the feeding port or the discharging port is provided with a conveying belt for conveying the printing stock, the clamping devices positioned on two sides of the connecting beam further comprise a second motor, the second motor is fixed on the connecting beam, and an output shaft of the second motor is fixed with a rotating plate; in the clamping devices on two sides of the connecting beam, the bottom plate is fixed to the rotating plate, so that the second motor drives the gripper to rotate relative to the feeding hole or the conveying belt of the discharging hole.

In a possible implementation manner of the first aspect, the clamping mechanism further includes a double-slider sliding table, the double-slider sliding table is fixed on the bottom plate, and the grippers on two sides of the bottom plate are respectively fixed to two sliders of the double-slider sliding table.

In a possible implementation manner of the first aspect, the swinging device further includes a slide and a third motor, the slide is limited to slide vertically with respect to the mounting frame and slide horizontally with respect to the connection beam, or the slide is limited to slide horizontally with respect to the mounting frame and slide vertically with respect to the connection beam; the third motor is fixed on the mounting frame, an output shaft of the third motor is fixed with a swing rod, and one end of the swing rod, which is far away from the third motor, is connected with the connecting device Liang Shujie.

Second aspect: the device for continuously printing the printing stock and the working method of the working method thereof are characterized in that: the working method comprises the following steps:

the printing stock is conveyed to a feed inlet of the machine base, the clamping device clamps the printing stock, then the connecting beam of the swinging device rotates 180 degrees to drive the printing stock to be transferred to the next station, and the bottom die and the top nozzle in the positioning device of the station clamp the printing stock;

the connecting beam continuously rotates 180 degrees, so that each clamping device is reset to a previous station, the printing stock is clamped again, the printing stock can be transferred to the next station again through the rotation of the connecting beam, and a process of continuously transferring and conveying the printing stock from the feeding hole to the discharging hole through each positioning device in a mode of transferring the printing stock through each clamping device is formed;

after the printing object is clamped and transferred to the positioning device below the printing device by the clamping device, the printing head is pressed downwards towards the screen printing plate and moves relative to the screen printing plate, so that the printing ink is extruded onto the printing object from the image-text meshes of the screen printing plate by the printing head, and printing is completed.

As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: according to the invention, the connecting beam of the swinging device rotates to drive each clamping device to clamp and transfer printing materials on each station from the feed inlet to the discharge outlet sequentially through each positioning device in a transmission mode, so that a continuous printing material conveying process is formed. When the printing stock is transferred to the positioning device, the positioning device can clamp and fix the printing stock with the curved surface through the bottom die and the top nozzle, so that the printing stock is suspended and fixed between the positioning bottom die and the top nozzle, the printing device moves downwards to press the screen printing plate through the printing head, and ink can be extruded onto the printing stock from the meshes of the image-text part of the screen printing plate, so that printing is finished. Therefore, the invention can realize continuous conveying of the printing stock besides the printing stock with the curved surface, and automatically print the printing stock in the conveying process without manual operation, thereby being very convenient.

Drawings

Fig. 1 is a schematic perspective view of the front view of the present invention.

Fig. 2 is a schematic perspective view of the hidden stand of fig. 1.

Fig. 3 is an enlarged schematic view at a in fig. 2.

Fig. 4 is a schematic perspective view of the back view of the present invention.

Fig. 5 is a schematic perspective view of the hidden stand of fig. 4.

Fig. 6 is an enlarged schematic view at B in fig. 5.

Fig. 7 is a schematic perspective view of a positioning device for installing a mounting frame.

Fig. 8 is a schematic perspective view of a positioning device.

Fig. 9 is a schematic perspective view of a positioning device provided with a third driving cylinder.

Fig. 10 is a schematic perspective view of a printing apparatus.

Fig. 11 is an enlarged schematic view at C in fig. 10.

Fig. 12 is a schematic perspective view of a clamping device.

Fig. 13 is a schematic perspective view of a swinging device arranged on a mounting frame.

Fig. 14 is an enlarged schematic view at D in fig. 13.

Fig. 15 is an enlarged schematic view at E in fig. 13.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.

Hereinafter, the terms "first," "second," "third," etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", "a third", etc. may explicitly or implicitly include one or more such feature.

Furthermore, in this application, directional terms "upper", "lower", etc. are defined with respect to the orientation in which the components are schematically disposed in the drawings, and it should be understood that these directional terms are relative concepts, which are used for description and clarity with respect thereto, and which may be varied accordingly with respect to the orientation in which the components are disposed in the drawings.

The invention discloses equipment for continuously printing a printing stock and a working method thereof, and as shown in figures 1 and 2, the equipment comprises a stand 1, a positioning device 3, a printing device 4, a clamping device 5 and a swinging device 6. Wherein the stand 1 forms the outer shell and the inner frame of the device, and the positioning device 3, the printing device 4, the clamping device 5 and the swinging device 6 are arranged in the stand 1. Further, the mounting frame 11 is fixed in the machine base 1, and the positioning device 3, the printing device 4 and the swinging device 6 are connected with the mounting frame 11.

A plurality of stations are arranged in the machine base 1, the horizontal distances between two adjacent stations are consistent, and as shown in fig. 13, the position of the station 103 can be the position of a dotted line square frame. Referring to fig. 4 again, the stations 103 on two sides of the stand 1 are divided into a feed inlet 101 and a discharge outlet 102, and the feed inlet 101 and the discharge outlet 102 can be provided with conveyor belts 2, and the two conveyor belts 2 are respectively used for conveying the printing stock 7 to be printed to the feed inlet 101 and outputting the printing stock 7 after being printed from the discharge outlet 102. Preferably, both the inlet 101 and the outlet 102 may be provided with position sensors to sense that the substrate 7 is transported to the conveyor belt 2 at the inlet 101 and to sense that the substrate 7 is placed on the conveyor belt 2 at the outlet 102.

As shown in fig. 2, 3 and 7, the machine base 1 is provided with a positioning device 3 at a station 103 between a feed inlet 101 and a discharge outlet 102. Referring again to fig. 8 and 9, the positioning device 3 includes a bottom die 31, a top nozzle 32, a first motor 33, and a first driving cylinder 34. The first motor 33 is arranged on the back surface of the mounting frame 11, and an output shaft of the first motor 33 penetrates through the mounting frame 11 and is fixedly connected with the bottom die 31, and the rotation of the bottom die 31 can be limited and driven by the rotation of the output shaft of the first motor 33. The front surface of the mounting frame 11 is also fixed with a connecting frame 35, and the first driving cylinder 34 is fixed to the connecting frame 35, and the driving cylinder in this embodiment may be a power element with a telescopic rod, such as a cylinder, an oil cylinder or an electric push rod. The telescopic rod of the first driving cylinder 34 is telescopically moved with respect to the bottom die 31, and the top nozzle 32 is connected to the telescopic rod of the first driving cylinder 34 so that the top nozzle 32 is moved with respect to the axis of rotation of the bottom die 31. Preferably, the top nozzle 32 is connected to a bearing housing (not shown) for telescopic rod rotation relative to the first drive cylinder 34. When the clamping device 5 clamps the printing stock 7 between the bottom die 31 and the top nozzle 32, the telescopic rod of the first driving cylinder 34 moves towards the bottom die 31 to enable the top nozzle 32 to press the printing stock 7 against the bottom die 31, so that the printing stock 7 is clamped between the bottom die 31 and the top nozzle 32, the printing stock 7 is fixed between the positioning bottom die 31 and the top nozzle 32, and the printing stock 7 is suspended in the air in a fixing manner, so that the situation that the bottle-shaped printing stock 7 with a curved surface, such as that shown in fig. 3, cannot be stably placed is avoided.

Preferably, the mounting frame 11 may further be provided with a visual camera 12, after the visual camera 12 scans the shape of the printing stock 7, information is sent to the control system, the control system knows the current fixed angle of the printing stock according to the scanned image, if the upward surface of the current printing stock 7 is not the surface required for current positioning, the control system controls the first motor 33 to rotate so as to drive the bottom die 31 to rotate, so as to rotate the printing stock 7, and adjust the upward surface of the printing stock 7, so that the surface to be printed of the printing stock 7 faces upwards.

With continued reference to fig. 8, the positioning device 3 further includes a fixing plate 361, the fixing plate 361 is fixed on the back of the mounting frame 11, the first motor 33 is arranged to slide on the fixing plate 361, and a second driving cylinder 37 is further fixed on the fixing plate 361, and a telescopic rod of the second driving cylinder 37 is connected to the first motor 33 to drive the bottom die 31 to move relative to the mounting frame 11 so as to adjust the distance between the bottom die 31 and the top nozzle 32, thereby realizing clamping of more printing objects 7 with different lengths.

Referring to fig. 9 again, the positioning device 3 near the discharge hole 102 further includes a connection plate 362 fixed on the back of the mounting frame 11, and the fixing plate 361 of the positioning device 3 near the discharge hole 102 is not connected to the mounting frame 11, the bottom of one end of the connection plate 362 far away from the bottom die 31 is fixed with the third driving cylinder 38, the telescopic rod of the third driving cylinder 38 passes through the connection plate 362 and vertically stretches relative to the connection plate 362, and the telescopic rod end of the third driving cylinder 38 and one end of the fixing plate 361 far away from the bottom die 31 are pivoted, the end of the fixing plate 361 near the bottom die 31 and the connection plate 362 form a mutually rotating structure through connection of the connection rod 363, and the two ends of the specific connection rod 363 are respectively pivoted with the fixing plate 361 and the connection plate 362, so that the pivoting in this embodiment can be formed by penetrating the pin 364, so that the two components can mutually rotate. After the structure is adopted, the fixing plate 361 can be driven to swing by extending or retracting the telescopic rod of the third driving cylinder 38, so that the first motor 33 and the bottom die 31 are driven to swing, and the fixing angle of the printing object 7 is adjusted. For example, when the printing stock 7 is a bottle with a cone-shaped surface as shown in fig. 3, in order to level the body of the bottle, the telescopic rod of the third driving cylinder 38 can be controlled to extend to jack up one end of the bottle, so that the bottle swings to a state that the upward surface is horizontal, and printing is facilitated. Preferably, the top nozzle 32 is made of rubber, and the end of the top nozzle is in a diameter-reduced cone structure so as to reduce the contact surface between the top nozzle 32 and the printing stock 7, thereby avoiding affecting the swinging of the printing stock.

As described above, in this embodiment, three sets of positioning devices 3 are preferably configured, where the first set of positioning devices 3 near the feed inlet 101 may be used to drive the printing object 7 to rotate, so that the printing object 7 rotates to the surface to be printed facing upwards, and then the second set of positioning devices 3 and the third set of positioning devices 3 are used to fix the printing object 7 during printing. Specifically, the second set of positioning devices 3 fixes the printing device 4 to directly print on the printing stock 7 which is rotated to the surface to be printed and faces upwards; the third positioning device 3 is the positioning device 3 with the third driving cylinder 38, and is used for fixing the printing stock 7 with the inclined surface and automatically tilting to a state that the upward surface forms a horizontal surface, that is, the second positioning device 3 and the third positioning device 3 for fixing the printing stock 7 during printing can be alternatively applied.

As shown in fig. 2, 10 and 11, the printing apparatus 4 includes a screen plate 41, a print head 42, a holder 43, a holder 44, and a holding screw 45. The clamping seat 43 is connected to the mounting frame 11 and located above each positioning device 3. Clamping piece 44 is still all connected at the positive both ends position of mounting bracket 11 to clamping piece 43, and clamping piece 44 sets up sunken standing groove 441 towards the one side in the middle of clamping piece 43, and the both sides of screen printing plate 41 inlay respectively in standing groove 441, and clamping screw 45 penetrates clamping piece 44 to press screen printing plate 41 spirally, makes screen printing plate 41 fixed and be located the top of positioner 3 relative clamping piece 43. Further, the clamping member 44 may be configured to slide relative to the clamping seat 43, and may be fixed by pressing a bolt after sliding, so as to adjust the position of the clamping member 44 relative to the clamping seat 43, so that the printing apparatus 4 may fix the screen printing plates 41 with different sizes. Still further, the mounting frame may be additionally provided with a set of multi-axis moving mechanisms 47 to drive the screen plate 41 to move relative to the positioning device 3, thereby realizing adjustment of the position of the screen plate 41 relative to the positioning device 3.

Preferably, the printing head 42 can also clamp and fix the scraping plate, and the printing head 42 can be connected with the triaxial moving mechanism 46 to be positioned on the screen printing plate 41 to move, so that the printing head 42 can move downwards to press the ink part on the screen printing plate 41 and move towards the other end of the screen printing plate 41 at a uniform speed, and the ink is extruded by the printing head 42 from the meshes of the image-text part of the screen printing plate 41 to the printing stock 7 in the moving process, so that printing is finished. The triaxial moving mechanism 46 may be a triaxial moving module mounted on the mounting frame 11 to be movable in three axial directions, i.e., transverse, longitudinal and vertical directions, with respect to the screen plate 41 as shown in fig. 5, and specifically, the triaxial moving mechanism 46 may be a triaxial moving module for driving X, Y, Z three axial directions in the prior art.

As shown in fig. 12, the gripping device 5 includes a base plate 51, a grip 52, and a double-slider slide 53. The double-slider sliding table 53 may be a moving module for implementing synchronous split (i.e. moving in opposite directions) of two sliders in the prior art. Two grips 52 are provided on both sides of the base plate 51, a double-slider slide table 53 is fixed to the base plate 51, and the grips 52 on both sides of the base plate 51 are fixed to the sliders on both sides of the double-slider slide table 53, respectively. During operation, the two sliders of the double-slider sliding table 53 can relatively slide to realize the relative movement of the grippers 52 on the two sides of the bottom plate 51, so that the grippers 52 can clamp the printing stock 7 and release the printing stock 7.

As shown in fig. 13 and 15, the swinging device 6 includes a connection beam 61, a slider 62, and a third motor 63. Wherein, the connecting beam 61 is provided with the clamping devices 5, and the number of the clamping devices 5 on the connecting beam 61 is one set more than that of the positioning devices 3, and the distance between the centers of two adjacent clamping devices 5 is consistent with the distance between the centers of two adjacent stations 103. The slide 62 is restricted to slide vertically with respect to the mounting frame 11 and slide horizontally with respect to the connection beam 61, or the slide 62 is restricted to slide horizontally with respect to the mounting frame 11 and slide vertically with respect to the connection beam 61. Preferably, the mounting frame 11 is fixed with a first slide rail 661 vertically arranged, the first slide rail 661 is adapted to the first slide block 662, the slide seat 62 is fixed with the first slide block 662, the connecting beam 61 is fixed with a second slide rail 663 horizontally arranged, the second slide rail 663 is adapted to be connected with the second slide block 664, and the side of the slide seat 62 facing away from the first slide block 662 is fixedly connected with the second slide block 664, thereby forming a structure that the slide seat 62 is limited to vertically slide relative to the mounting frame 11 and horizontally slide relative to the connecting beam 61, so that the connecting beam 61 is limited to horizontally move vertically or laterally only. Referring to fig. 14 again, the third motor 63 is fixed on the back of the mounting frame 11, and the output shaft of the third motor 63 is fixed with a swing link 64, one end of the swing link 64 away from the third motor 63 is pivoted with the connection beam 61, specifically, one end of the swing link 64 away from the third motor 63 is fixed with a joint bearing 641, the connection beam 61 is fixed with a connecting rod 65, and the connecting rod 65 passes through the bearing inner ring of the joint bearing 641 in an interference fit manner, so that a structure for limiting the rotation of the connection beam 61 relative to the swing link 64 by taking the connecting rod 65 as an axis is formed.

With continued reference to fig. 13 and 14, when the third motor 63 is operated, the third motor 63 drives the swing rod 64 to rotate, the swing rod 64 rotates to drive the connecting beam 61 to rotate, and since the connecting beam 61 is limited to move only transversely and vertically relative to the mounting frame 11, the swing rod 64 drives the clamping device 5 on the connecting beam 61 to swing from bottom to top or from top to bottom relative to the feeding hole 101, each positioning device 3 and the discharging hole 102, so that the clamping device 5 is located between two adjacent work stations 103 to swing reciprocally.

As shown in fig. 2, 3 and 13, taking two adjacent stations 103 as an example, when the connecting beam 61 rotates 180 ° to drive the clamping device 5 to swing below the positioning device 3 of one station 103, the gripper 52 is located between the bottom die 31 and the top nozzle 32, the printing material 7 clamped by the gripper 52 can be tightly pushed by moving the top nozzle 32 towards the bottom die 31, then the gripper 52 releases the printing material 7, and the connecting beam 61 swings downwards to enable the clamping device 5 to leave the printing material 7 downwards, so that the printing material 7 is transferred to be clamped and fixed by the positioning device 3; when the connecting beam 61 continues to rotate 180 °, the other clamping device 5 swings to the position below the positioning device 3 of the station 103, the grippers 52 of the other clamping device 5 move from bottom to top to be located between the bottom die 31 and the top nozzle 32, the printing material 7 can be clamped by moving the grippers 52 to the printing material 7, then the top nozzle 32 moves away from the bottom die 31 to release the printing material 7, and the connecting beam 61 again 180 ° can enable the other clamping device 5 to transfer the printing material 7 to the positioning device 3 of the other station 103 along with the movement of the connecting beam 61. It can be seen that the invention allows the gripper device 5 to transfer the printing material 7 from one station 103 to an adjacent further station 103 by swinging the swinging device 6.

Further, when one clamping device 5 is located at the feed port 101 and the other clamping devices 5 are located at the positioning device 3, that is, when the clamping devices 5 are located at each station 103 near one side of the feed port 101, the connecting beam 61 rotates 180 ° from bottom to top to enable each clamping device 5 to rotate to the other station 103, and then the connecting beam 61 continues to rotate (that is, rotates 180 ° from top to bottom) to enable each clamping device 5 to return to the previous station 103. Therefore, the connecting beam 61 of the swinging device 6 can rotate to drive the clamping devices 5 to clamp and transfer the printing stock 7 from the feeding hole 101 to the discharging hole 102 sequentially through the positioning devices 3 in a transmission mode, so that a process of continuously conveying the printing stock 7 is formed.

Referring again to fig. 5 and 6, the clamping means located at both sides of the connection beam 61 further includes a second motor 54, the second motor 54 is fixed to the connection beam 61, and an output shaft of the second motor 54 is fixed to the rotation plate 55. In the clamping device 5 on two sides of the connecting beam 61, the bottom plate 51 is fixed to the rotating plate 55, so that the second motor 54 can drive the grippers 52 to rotate relative to the conveying belt 2 of the feeding port 101 and the discharging port 102, and therefore the overturning angle of the printing stock 7 after clamping is achieved, for example, the printing stock 7 shown in fig. 6 is a bottle, after the bottle stands on the conveying belt 2 and is conveyed into the machine base 1, the two grippers 52 of the clamping device 5 clamp the bottle, and then the second motor 54 drives the rotating plate 55 to rotate 90 degrees, so that the bottle can be overturned to form a horizontally placed state shown in fig. 4.

In addition, the invention can be provided with a set of control system which can be a PLC controller and is used for controlling the orderly operation of power elements such as each motor, each driving cylinder and the like according to the written program and the configured position sensor so as to form the following working method of the equipment:

the clamping devices 5 clamp the printing stock 7, and the third motor 63 drives the connecting beam 61 to rotate 180 degrees from bottom to top so as to drive each clamping device 5 to transfer the printing stock 7 to the next station 103, and the next station 103 processes the printing stock 7;

the third motor 63 continuously drives the connecting beam 61 to rotate, namely, rotates 180 degrees from top to bottom, so that each clamping device 5 is reset to the previous station 103, the printing stock 7 is clamped again, the printing stock 7 can be transferred to the next station 103 again through the rotation of the connecting beam 61, the swinging device 6 drives each clamping device 5 to reciprocate between two adjacent stations 103 which are sequentially arranged, and a continuous process of transferring the printing stock 7 from the feed port 101 to the discharge port 102 through each positioning device 3 in a transmission mode of each clamping device 5 is formed through the rotation of the connecting beam 61;

when the clamping device 5 clamps and transfers the printing stock to the positioning device below the printing device 4, the print head 42 of the printing device 4 presses downwards against the screen printing plate 41 and moves relative to the screen printing plate 41, so that the ink is attached to the printing stock 7 clamped by the positioning device 3, and printing on the surface of the printing stock is realized.

In addition, a UV lamp is provided at the position of the discharge port 102 to irradiate ultraviolet rays to the print-completed print, thereby curing the ink forming the print.

In summary, the present invention drives each clamping device 5 to clamp and transfer the printing material 7 on each station 103 from the feeding hole 101 to the discharging hole 102 sequentially through each positioning device 3 by rotating the connecting beam 61 of the swinging device 6. When the printing stock 7 is transferred to the positioning device 3, the positioning device 3 clamps and fixes the printing stock 7, so that the printing stock 7 is suspended, the fixed state of the printing stock 7 can be adjusted, the surface of the printing stock 7 to be printed is upward, the printing device moves downwards to press the screen printing plate 41 through the printing head 42, and therefore ink is extruded onto the printing stock 7 from the meshes of the image-text part of the screen printing plate 41, and printing is completed. Therefore, the invention can realize continuous conveying of the printing stock 7 besides the printing stock 7 with the curved surface, and automatically print the printing stock 7 in the conveying process without manual operation, thereby being very convenient.

The foregoing is merely illustrative of specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention by using the design concept shall fall within the scope of the present invention.

Claims (7)

1. An apparatus for continuously printing a substrate, the apparatus comprising:

the machine comprises a machine base, wherein a plurality of stations are arranged in the machine base, a mounting frame is arranged in the machine base, and stations positioned on two sides of the mounting frame in the machine base are a feed inlet and a discharge outlet respectively;

the positioning device is arranged at stations between the feeding hole and the discharging hole, the positioning device comprises a bottom die, a top nozzle and a first driving cylinder, the front surface of the mounting frame is also fixedly connected with a connecting frame, the first driving cylinder is fixed to the connecting frame, a telescopic rod of the first driving cylinder moves relative to the bottom die, and the top nozzle is fixed to a telescopic rod of the first driving cylinder, so that the top nozzle moves relative to the bottom die to clamp a printing object between the bottom die and the top nozzle;

the printing device comprises a screen printing plate, a printing head, a clamping seat, clamping pieces and clamping screws, wherein the screen printing plate is positioned above the positioning device, the printing head is pressed downwards towards the screen printing plate to enable the screen printing plate to be attached to a printing stock clamped by the positioning device, the printing head is positioned on the screen printing plate to move, the clamping seats are connected to the mounting frame, the clamping seats are connected to the clamping pieces at the two ends of the front of the mounting frame, a concave placing groove is formed in one surface of each clamping piece, facing the middle of each clamping seat, of each screen printing plate, two sides of each screen printing plate are respectively embedded in the placing groove, and the clamping screws spirally penetrate the clamping pieces to press the screen printing plate;

the clamping device comprises a bottom plate and grippers, wherein the grippers are arranged on two sides of the bottom plate, and the two grippers are positioned on the bottom plate and move relatively to clamp a printing stock;

the swinging device comprises a connecting beam, a sliding seat and a third motor, wherein the sliding seat is limited to slide vertically relative to the mounting frame and slide horizontally relative to the connecting beam, or the sliding seat is limited to slide horizontally relative to the mounting frame and slide vertically relative to the connecting beam, the third motor is fixed on the mounting frame, an output shaft of the third motor is fixed with a swinging rod, one end of the swinging rod, which is far away from the third motor, is connected with the connecting Liang Shujie, and the connecting beam is positioned below each positioning device and swings back and forth in a swinging manner relative to two sides of the mounting frame;

the connecting beam is fixedly provided with a plurality of clamping devices, the clamping devices are located between two adjacent stations to swing in a reciprocating mode, and when the clamping devices swing to the lower portion of the positioning device, the grippers are located between the bottom die and the top nozzle.

2. An apparatus for continuously printing a substrate as claimed in claim 1, wherein: the positioning device further comprises a first motor, the first motor is arranged on the back of the mounting frame, and an output shaft of the first motor penetrates through the mounting frame and is fixedly connected with the bottom die.

3. An apparatus for continuously printing a substrate as claimed in claim 2, wherein: the positioning device further comprises a fixing plate, a connecting plate and a third driving cylinder, wherein the connecting plate is fixed on the back of the mounting frame, the connecting plate is far away from the bottom of one end of the bottom die, the third driving cylinder is fixed on the bottom of the connecting plate, a telescopic rod of the third driving cylinder penetrates through the connecting plate, the tail end of the telescopic rod of the third driving cylinder is pivoted with one end of the fixing plate far away from the bottom die, and the fixing plate is close to one end of the bottom die and connected with the connecting plate to form a mutually rotating structure.

4. An apparatus for continuously printing a substrate as claimed in claim 1, wherein: the printing device further comprises a triaxial moving mechanism, wherein the triaxial moving mechanism is arranged on the mounting frame, and the triaxial moving mechanism drives the printing head to move in three axial directions relative to the screen printing plate.

5. An apparatus for continuously printing a substrate as claimed in claim 1, wherein: the feeding hole or the discharging hole is provided with a conveying belt for conveying printing stock, the clamping devices positioned on two sides of the connecting beam further comprise a second motor, the second motor is fixed on the connecting beam, and an output shaft of the second motor is used for fixing the rotating plate; in the clamping devices on two sides of the connecting beam, the bottom plate is fixed to the rotating plate, so that the second motor drives the gripper to rotate relative to the feeding hole or the conveying belt of the discharging hole.

6. An apparatus for continuously printing a substrate as claimed in claim 1 or claim 5, wherein: the clamping mechanism further comprises a double-slide sliding table, the double-slide sliding table is fixed on the bottom plate, and the grippers on two sides of the bottom plate are respectively fixed to two slides of the double-slide sliding table.

7. A method of operating the apparatus of any one of claims 1, 2, 3 and 5, wherein: the working method comprises the following steps:

the printing stock is conveyed to a feed inlet of the machine base, the clamping device clamps the printing stock, then the connecting beam of the swinging device rotates 180 degrees to drive the printing stock to be transferred to the next station, and the bottom die and the top nozzle in the positioning device of the station clamp the printing stock;

the connecting beam continuously rotates 180 degrees, so that each clamping device is reset to a previous station, the printing stock is clamped again, the printing stock can be transferred to the next station again through the rotation of the connecting beam, and a process of continuously transferring and conveying the printing stock from the feeding hole to the discharging hole through each positioning device in a mode of transferring the printing stock through each clamping device is formed;

after the printing object is clamped and transferred to the positioning device below the printing device by the clamping device, the printing head is pressed downwards towards the screen printing plate and moves relative to the screen printing plate, so that the printing ink is extruded onto the printing object from the image-text meshes of the screen printing plate by the printing head, and printing is completed.