Printing table pad device and printing equipment

Abstract

The present invention discloses a printing table paper pad device and printing equipment. The printing equipment includes a printing table paper pad device applied to the printing table, and the printing table paper pad device includes two fixed seats and two movable seats. The two fixed seats are respectively arranged on both sides of the printing table and are respectively slidably connected to the two movable seats. One of the two movable seats is provided with a paper placing shaft, and the other is provided with a rotating driver and a paper receiving shaft. The paper placing shaft and the paper receiving shaft are both rotatably connected to the moving seat at one end and free at the other end. The rotating driver is driven and connected to the paper receiving shaft. The moving seat can move relative to the fixed seat to have a working position and a paper picking and placing position. A locking component is provided between the fixed seat and the moving seat to lock the moving seat in the working position or the paper picking and placing position. When replacing the paper tape, the moving seat is moved to the paper picking and placing position, so that the paper placing shaft and the paper receiving shaft are moved and extended to facilitate the replacement of the paper tape thereon, reduce the trouble of assembling and disassembling the shafts, and facilitate the rapid replacement of the paper tape.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board printing, in particular to a printing table paper pad device and printing equipment. Background Art

[0002] In the existing PCB circuit board printing, in order to prevent the printed oil from leaking onto the back of the circuit board or the surface of the printing table, a paper tape is placed between the upper side of the printing table and the lower side of the circuit board during printing. Referring to Chinese invention patent CN210047188U, the patent name is an ink leakage prevention structure for printing equipment, in which a rotating shaft is provided on both sides of the printing table, one rotating shaft is used for winding and placing the paper tape, and the other rotating shaft is used for winding and rewinding the used paper tape. After the wound and placed paper tape is used up, the existing replacement method is usually to disassemble and remove the rotating shafts on both sides, load the new rolled paper tape into the paper placing rotating shaft, remove the used rolled paper tape from the paper taking-up rotating shaft, and then reinstall the two rotating shafts back to the two sides of the printing table for use. This paper tape replacement method is relatively cumbersome, and repeated assembly and disassembly of the rotating shafts is troublesome. Replacing the printing pad paper is time-consuming and labor-intensive, which is inconvenient for circuit board printing production. Summary of the Invention

[0003] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, the present invention provides a printing table paper pad device. A movable base is provided that is movable relative to a fixed base and locked in position by a locking assembly. This allows the paper feed and take-up shafts to be moved and extended when the paper tape is changed, facilitating the replacement of the paper tape thereon. This reduces the hassle of installing and removing the shafts, facilitates paper tape replacement, and facilitates use in circuit board printing production.

[0004] The present invention also provides a printing device having the printing table paper pad device.

[0005] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said movable base, and said bolt has a round shank to contact with said movable base.

[0006] The printing table paper pad device according to the embodiment of the present invention has at least the following beneficial effects: when in use, the locking component locks the movable seat in the working position, the rolled paper tape is placed on the paper feeding shaft, and the paper tape is padded between the upper side of the printing table and the lower side of the circuit board. One end of the paper tape is wound on the paper receiving shaft. As the circuit board is printed, the paper receiving shaft is driven to rotate by the rotating driver, and the used paper tape is wound on the paper receiving shaft. At the same time, the paper tape is wound by the paper receiving shaft, and the paper feeding shaft is driven to rotate by the paper tape, so that the unused paper tape on the paper feeding shaft is pulled and padded on the printing table, which is convenient for the continuous printing production of the circuit board. The paper tape can be replaced by the new roll of paper and the paper roll can be taken off the paper roll by the paper take-up shaft, thereby facilitating the replacement of the paper tape and reducing the trouble of installing and disassembling the shaft.

[0007] According to some embodiments of the present invention, a guide rail is provided on the fixed seat, and a slider is correspondingly provided on the movable seat, and the slider is in sliding engagement with the guide rail.

[0008] According to some embodiments of the present invention, the locking assembly includes a locking driver, a locking member and a locking block. Two locking blocks are provided on each of the fixed seats. The two locking blocks on the same fixed seat are respectively distributed corresponding to the working position and the paper picking and placing position. The locking driver is provided on the movable seat and is connected to the locking member driving device. The locking driver can drive the locking member to move so that the locking member cooperates with the locking block at the corresponding position to limit the movement of the movable seat relative to the fixed seat.

[0009] According to some embodiments of the present invention, both the locking member and the locking block are provided with teeth, and the locking driver can drive the locking member to move to abut and cooperate with the locking block at a corresponding position. When the locking member abuts and cooperates with the locking block, the teeth on the locking member and the teeth on the locking block engage with each other.

[0010] According to some embodiments of the present invention, each of the fixed seats is provided with two limit members, which are spaced apart along the moving direction of the movable seat and are respectively located at both ends of the moving path of the movable seat, so as to limit the moving stroke of the movable seat.

[0011] According to some embodiments of the present invention, the fixed base is provided with an in-position switch, and the movable base is correspondingly provided with an in-position sensing piece, and the in-position sensing piece can move with the movable base to trigger the in-position switch.

[0012] According to some embodiments of the present invention, the paper feeding shaft and the paper collecting shaft are both inflatable shafts, and the free ends of the paper feeding shaft and the free ends of the paper collecting shaft are both detachably connected with a paper locking cover for limiting the detachment of the paper tape.

[0013] According to some embodiments of the present invention, at least one of the two movable seats is provided with a brake assembly, and the brake assembly is capable of limiting the rotation of the paper delivery shaft and / or the paper collection shaft.

[0014] According to some embodiments of the present invention, the movable base connected to the paper delivery shaft is provided with the brake assembly, and the brake assembly includes a brake wheel and a brake belt. The brake wheel is rotatably connected to the movable base, and the brake belt is wound around the brake wheel and the paper delivery shaft and is tensioned and abutted against the brake wheel and the paper delivery shaft, respectively.

[0015] According to some embodiments of the present invention, the movable seat connected to the paper receiving shaft is provided with the brake assembly, and the brake assembly includes a brake driver and a brake block connected to the brake driver. The brake driver can drive the brake block to move to abut against the paper receiving shaft and / or the paper tape on the paper receiving shaft to limit the rotation of the paper receiving shaft.

[0016] According to some embodiments of the present invention, the paper feeding shaft is connected to a paper break detection sensor that can rotate with the paper feeding shaft, and the movable seat connected to the paper feeding shaft is correspondingly provided with a paper break detection switch, and the paper break detection switch can detect the rotation of the paper break detection sensor.

[0017] According to some embodiments of the present invention, the fixing seat is provided with a full paper switch corresponding to the paper receiving shaft, and the full paper switch can be triggered by the paper tape on the paper receiving shaft to detect the amount of paper tape wound on the paper receiving shaft.

[0018] According to some embodiments of the present invention, the printing table paper pad device also includes a tensioning roller, and a plurality of the tensioning rollers are provided and are distributed on opposite sides of the printing table corresponding to the fixed seats for the paper tape to be wound and tensioned. At least one of the tensioning rollers is provided with a limiting guide ring for limiting the position of the paper tape.

[0019] According to some embodiments of the present invention, the printing table paper pad device also includes a paper clamping assembly, which is connected to the printing table and includes a translation drive, a lifting drive and a clamping piece. The translation drive is driven and connected to a connecting seat and can drive the connecting seat to move horizontally. The lifting drive is arranged on the connecting seat and is driven and connected to the clamping piece to be able to drive the clamping piece to move up and down, so that the clamping piece can press the paper tape onto the printing table.

[0020] According to some embodiments of the present invention, the printing table paper pad device also includes a rotating arm, an elastic member, a meter wheel and an encoder, the rotating arm is rotatably connected to the printing table, the meter wheel is rotatably connected to the rotating arm, the elastic member acts on the rotating arm to enable the meter wheel to roll and abut against the paper tape, and the encoder is connected to the meter wheel for recording the number of rotations of the meter wheel.

[0021] The printing device according to the embodiment of the second aspect of the present invention comprises the printing table paper pad device according to the embodiment of the first aspect of the present invention.

[0022] The printing device according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above-mentioned printing table paper pad device, the movable seat can be moved relative to the fixed seat and locked in position by the locking component, so that when replacing the paper tape, the movable seat can be moved to the paper picking and placing position, and the paper placing shaft and the paper receiving shaft can be moved and extended relative to the fixed seat to facilitate the replacement of the paper tape thereon, reduce the trouble of installing and disassembling the shaft, facilitate the rapid replacement of the paper tape, facilitate the improvement of production efficiency, and facilitate the use of circuit board printing production.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0025] Figure 1 A schematic diagram of a portion of the structure of a printing device according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 One of the partial structural diagrams of the paper pad device of the printing table;

[0027] Figure 3 for Figure 2 Schematic diagram of the structure in which the middle movable seat moves to the paper picking and placing position;

[0028] Figure 4 for Figure 2Schematic diagram of the rear view of the paper pad device of the printing table;

[0029] Figure 5 for Figure 2 A schematic cross-sectional view of the partial structure of the paper pad device in the middle printing table;

[0030] Figure 6 for Figure 1 Schematic diagram of part of the structure of the paper pad device of the printing table (part 2);

[0031] Figure 7 for Figure 6 Schematic diagram of the structure in which the middle movable seat moves to the paper picking and placing position;

[0032] Figure 8 for Figure 6 A schematic cross-sectional view of the partial structure of the paper pad device in the middle printing table;

[0033] Figure 9 for Figure 1 Schematic diagram of part of the structure of the printing equipment;

[0034] Figure 10 for Figure 9 Schematic diagram of the structure of the printing equipment from another perspective.

[0035] Reference numerals:

[0036] Fixed seat 100, limit member 110, in-position switch 120, in-position sensor 121, full paper switch 130, guide rail 140;

[0037] Moving base 200, paper feeding shaft 210, paper locking cover 211, paper break detection sensor 212, paper break detection switch 213, paper locking hand wheel 214, rotation driver 220, paper receiving shaft 230, brake assembly 240, brake wheel 241, brake belt 242, brake driver 243, brake block 244, slider 250;

[0038] Locking assembly 300, locking driver 310, locking member 320, locking block 330;

[0039] Tensioning roller 400, limiting guide ring 410;

[0040] Paper clamping assembly 500, translation driver 510, connecting seat 511, lifting driver 520, clamping piece 530;

[0041] Rotating arm 610, elastic member 620, meter wheel 630, encoder 640;

[0042] Printing table 10, paper tape 20. DETAILED DESCRIPTION

[0043] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0044] In the description of the present invention, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0045] In the description of the present invention, if the words such as several, greater than, less than, exceed, above, below, within, etc. appear, among which, several means one or more, and more means more than two, greater than, less than, exceed, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself.

[0046] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0047] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 A printing table paper pad device is applied to a printing table 10 and includes a fixed seat 100 and a movable seat 200. The fixed seats 100 are provided with two and are respectively provided on opposite sides of the printing table 10. The movable seats 200 are provided with two and are respectively slidably connected to the two fixed seats 100. One of the two movable seats 200 is provided with a paper placing shaft 210 for placing the paper supply belt 20, and the other is provided with a rotation driver 220 and a paper receiving shaft 230 for winding the paper supply belt 20. One end of the paper placing shaft 210 is rotatably connected to the paper supply belt 20. On the movable base 200, the other end is a free end, one end of the paper collection shaft 230 is rotatably connected to the movable base 200, and the other end is a free end. The rotation driver 220 is drivably connected to the paper collection shaft 230 to drive the paper collection shaft 230 to rotate. A locking assembly 300 is provided between the fixed base 100 and the movable base 200. The movable base 200 can move relative to the fixed base 100 to have a working position and a paper picking and placing position. The locking assembly 300 can lock the movable base 200 in the working position or the paper picking and placing position.

[0048] It is understandable that if Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, two fixed seats 100 are respectively arranged on the left and right sides of the printing table 10, and two movable seats 200 are respectively slidably connected to the two fixed seats 100 and can move back and forth relative to the fixed seats 100. A paper placing shaft 210 is rotatably connected to the movable seat 200 on the left, and a rotating driver 220 and a paper receiving shaft 230 are provided on the movable seat 200 on the right, and the front ends of the paper placing shaft 210 and the paper receiving shaft 230 are free ends.

[0049] When using, refer to Figure 2 and Figure 6 The locking assembly 300 locks the movable seat 200 in the working position, and the rolled paper tape 20 is placed on the paper feeding shaft 210. The paper tape 20 is padded between the upper side of the printing table 10 and the lower side of the circuit board. One end of the paper tape 20 is wound on the paper receiving shaft 230. As the circuit board is printed, the rotary driver 220 drives the paper receiving shaft 230 to rotate, and the used paper tape 20 is wound on the paper receiving shaft 230. At the same time, the paper receiving shaft 230 is used to wind up the paper tape 20, and the paper feeding shaft 210 is driven to rotate by the paper tape 20, so that the unused paper tape 20 on the paper feeding shaft 210 is pulled and padded on the printing table 10, which is convenient for the continuous printing production of the circuit board.

[0050] When the paper tape 20 needs to be replaced, first release the position lock of the movable seat 200 by the locking assembly 300, and drive the movable seat 200 forward relative to the fixed seat 100 by manual, electric or pneumatic means. Figure 3 and Figure 7 , so that the movable seat 200 moves from the working position to the paper picking and placing position, and then the locking component 300 locks the movable seat 200 in the paper picking and placing position. The paper placing rotating shaft 210 and the paper receiving rotating shaft 230 both have one end as a free end. The paper placing rotating shaft 210 and the paper receiving rotating shaft 230 move and extend relative to the fixed seat 100, so as to facilitate the loading of the new roll of paper tape 20 into the paper placing rotating shaft 210 and the removal of the used roll of paper tape 20 from the paper receiving rotating shaft 230, which facilitates the replacement of the paper tape 20 and reduces the trouble of installing and disassembling the rotating shafts. Then the lock is released. The component 300 locks the position of the movable seat 200. By driving the movable seat 200 to move to the working position relative to the fixed seat 100, the locking component 300 locks the movable seat 200 in the working position, and the paper tape 20 is re-placed on the printing table 10 and one end is wound and rolled up on the paper receiving shaft 230 to complete the replacement operation of the paper tape 20. The operation is simpler and more convenient than the traditional method of replacing the paper tape 20, which is conducive to the rapid replacement of the paper tape 20, facilitates the improvement of production efficiency, and is convenient for use in circuit board printing production.

[0051] In actual application, the specific structures of the fixed base 100, the movable base 200 and the locking assembly 300 can be set accordingly according to actual use needs, and will not be described in detail here. A detailed explanation will be given below.

[0052] In some embodiments, the fixed base 100 is provided with a guide rail 140, and the movable base 200 is provided with a corresponding slider 250, and the slider 250 is slidably engaged with the guide rail 140. It is understandable that Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7 As shown, guide rails 140 extending in the front-to-rear direction are provided on both the left and right sides of the fixed base 100. A corresponding slider 250 is provided on the movable base 200. The slider 250 slidably cooperates with the guide rails 140 to achieve a sliding connection between the movable base 200 and the fixed base 100. This simple and reasonable structure facilitates guiding relative movement between the two, ensuring stable and reliable movement and ease of use. In actual applications, in addition to the above structure, the sliding connection between the fixed base 100 and the movable base 200 can also be achieved through pulleys, slide grooves, and other structures, which can be set accordingly according to actual needs.

[0053] In some embodiments, the locking assembly 300 includes a locking driver 310, a locking member 320 and a locking block 330. Two locking blocks 330 are provided on each fixed seat 100. The two locking blocks 330 on the same fixed seat 100 are respectively distributed corresponding to the working position and the paper picking and placing position. The locking driver 310 is set on the movable seat 200 and is driven and connected to the locking member 320. The locking driver 310 can drive the locking member 320 to move so that the locking member 320 cooperates with the locking block 330 in the corresponding position to limit the movement of the movable seat 200 relative to the fixed seat 100.

[0054] It is understandable that if Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7 As shown, the two locking blocks 330 on the same fixed base 100 are arranged at intervals in front and behind corresponding to the working position and the paper picking and placing position respectively. When in use, the locking driver 310 moves with the movable base 200. When the movable base 200 moves to the working position or the paper picking and placing position, the locking driver 310 drives the locking member 320 to move so that the locking member 320 cooperates with the locking block 330 at the corresponding position to limit the movement of the movable base 200 relative to the fixed base 100, thereby realizing position locking. Its structure is simple and reasonable and easy to use.

[0055] In actual application, in addition to the above structure, an electromagnet can be set on the movable seat 200, and a corresponding magnetic attraction part can be set on the fixed seat 100. When the movable seat 200 moves to the corresponding position, the electromagnet is used to electromagnetically attract the magnetic attraction part at the corresponding position to achieve position locking. The specific settings can be made according to actual usage needs.

[0056] In some embodiments, both the locking member 320 and the locking block 330 are provided with teeth, and the locking driver 310 can drive the locking member 320 to move to abut and cooperate with the locking block 330 at the corresponding position. When the locking member 320 abuts and cooperates with the locking block 330, the teeth on the locking member 320 and the teeth on the locking block 330 engage with each other.

[0057] It is understandable that if Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7 As shown, the lower side of the locking member 320 and the upper side of the locking block 330 are both provided with teeth (not shown in the figure). When the position is locked, the locking actuator 310 drives the locking member 320 to move to abut and cooperate with the locking block 330 in the corresponding position, so that the teeth on the locking member 320 and the teeth on the locking block 330 engage, reducing the possibility of relative movement between the two and improving the reliability of the position locking. In actual application, in addition to the above structure, the locking member 320 and the locking block 330 can also be matched through a plug-in structure to limit the relative movement between the movable base 200 and the fixed base 100 to achieve position locking. The specific setting can be correspondingly determined according to actual use needs.

[0058] In some embodiments, each fixed seat 100 is provided with two limit members 110 , which are spaced apart along the moving direction of the movable seat 200 and located at both ends of the moving path of the movable seat 200 to limit the moving stroke of the movable seat 200 .

[0059] It is understandable that if Figure 2 and Figure 6 As shown, two stoppers 110 on the same fixed base 100 are spaced apart in the front-to-back direction and located at either end of the moving path of the movable base 200. This limits the travel of the movable base 200, prevents excessive movement of the movable base 200, and improves reliability. In actual use, the specific structure of the stoppers 110 can be set accordingly according to actual needs.

[0060] In some embodiments, the fixed base 100 is provided with an in-position switch 120 , and the movable base 200 is correspondingly provided with an in-position sensing piece 121 . The in-position sensing piece 121 can move with the movable base 200 to trigger the in-position switch 120 .

[0061] It is understandable that if Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7 As shown, the rear side of the fixed base 100 is provided with an in-position switch 120. During use, when the movable base 200 moves to the working position, the in-position sensor 121 can move with the movable base 200 to the in-position switch 120. The in-position switch 120 detects the in-position sensor 121 and triggers a feedback electrical signal to the control unit to ensure that the movable base 200 moves into position and improves operational reliability. In actual application, the in-position switch 120 can be a micro switch or a photoelectric sensor, and the specific structure of the in-position sensor 121 can be set accordingly according to actual use needs.

[0062] In some embodiments, the paper feeding shaft 210 and the paper collecting shaft 230 are both inflatable shafts, and the free ends of the paper feeding shaft 210 and the free ends of the paper collecting shaft 230 are both detachably connected with a paper locking cover 211 for preventing the paper tape 20 from being separated.

[0063] It is understandable that if Figure 5 and Figure 8 When the paper tape 20 is replaced, the paper locking hand wheel 214 is removed and the paper locking hand wheel 214 is removed to release the restriction on the paper tape 20.

[0064] In actual application, the paper locking cover 211 can also be detachably connected to the free end of the corresponding rotating shaft through a snap-on structure, which can be specifically set according to actual usage needs. Since the specific structure and principle of the inflatable shaft in the embodiment of the present invention are known to ordinary technicians in this field, they will not be described in detail here.

[0065] In some embodiments, at least one of the two movable bases 200 is provided with a brake assembly 240 , and the brake assembly 240 can limit the rotation of the paper feeding shaft 210 and / or the paper receiving shaft 230 .

[0066] It is understandable that if Figures 2 to 8As shown, each of the two movable bases 200 is equipped with a corresponding brake assembly 240. The brake assembly 240 helps reduce excessive rotation due to rotational inertia during the paper feeding and collection process, thereby reducing waste of the paper strip 20 and facilitating use. In actual use, the specific structure of the brake assembly 240 can be customized based on actual needs and will not be described in detail here. A detailed description will be provided below.

[0067] In some embodiments, the movable base 200 connected to the paper feeding shaft 210 is provided with a brake assembly 240, and the brake assembly 240 includes a brake wheel 241 and a brake belt 242. The brake wheel 241 is rotatably connected to the movable base 200, and the brake belt 242 is wrapped around the brake wheel 241 and the paper feeding shaft 210 and is tensioned and abutted against the brake wheel 241 and the paper feeding shaft 210 respectively.

[0068] It is understandable that if Figures 2 to 5 As shown, the brake assembly 240 on the movable base 200 connected to the paper delivery shaft 210 includes a brake wheel 241 and a brake belt 242. A driven wheel (not marked in the figure) is correspondingly provided on the paper delivery shaft 210. The brake wheel 241 is rotatably connected to the movable base 200. The brake belt 242 is wound around the brake wheel 241 and the driven wheel on the paper delivery shaft 210 and is respectively tensioned and abutted against the brake wheel 241 and the driven wheel to generate rotational damping on the paper delivery shaft 210. Therefore, when the paper receiving shaft 230 stops rotating, the rotational damping can be utilized to stop the paper delivery shaft 210 from rotating. Its structure is simple and reasonable, which is conducive to reducing brake drive and is easy to use.

[0069] In some embodiments, the movable base 200 connected to the paper receiving shaft 230 is provided with a brake assembly 240, and the brake assembly 240 includes a brake driver 243 and a brake block 244 driven by the brake driver 243. The brake driver 243 can drive the brake block 244 to move to abut against the paper receiving shaft 230 and / or the paper tape 20 on the paper receiving shaft 230 to limit the rotation of the paper receiving shaft 230.

[0070] It is understandable that if Figures 6 to 8 As shown, the brake assembly 240 on the movable seat 200 connected to the paper collection shaft 230 includes a brake driver 243 and a brake block 244. The brake driver 243 is driven and connected to the brake block 244 to drive the brake block 244 to move. When the rotating driver 220 stops driving the paper collection shaft 230, the brake driver 243 drives the brake block 244 to move to abut the corresponding part of the paper collection shaft 230 to limit the rotation of the paper collection shaft 230. Its structure is simple and reasonable, which is conducive to achieving timely braking and stopping of the paper collection shaft 230 and is easy to use.

[0071] In actual application, the brake block 244 can also be moved to abut against the paper tape 20 on the paper receiving shaft 230, or abut against the paper receiving shaft 230 and the paper tape 20 on the paper receiving shaft 230. The brake driver 243 can be a cylinder or an electric push rod. The specific structure of the brake block 244 can be set accordingly according to actual usage needs.

[0072] In some embodiments, the paper feed shaft 210 is connected to a paper break detection sensor 212 that can rotate with the paper feed shaft 210 , and the movable seat 200 connected to the paper feed shaft 210 is correspondingly provided with a paper break detection switch 213 , which can detect the rotation of the paper break detection sensor 212 .

[0073] It is understandable that if Figures 2 to 5 As shown, a paper break detection sensor 212 is connected to the rear end of the paper feed shaft 210, and a corresponding paper break detection switch 213 is provided on the movable base 200. During use, the rotary driver 220 drives the paper collection shaft 230 to rotate, which in turn drives the paper feed shaft 210 to rotate via the paper tape 20, and the paper break detection sensor 212 rotates along with the paper feed shaft 210. When the paper tape 20 breaks or the paper tape 20 on the paper feed shaft 210 is used up, the paper collection shaft 230 is still driven by the rotary driver 220 due to the loss of the linkage effect of the paper tape 20, but the paper feed shaft 210 stops rotating. The paper break detection switch 213 detects that the paper break detection sensor 212 has stopped rotating and feeds back an electrical signal to the control unit, which can then stop the rotary driver 220 and feedback information to the user, achieving timely shutdown, facilitating timely replacement of the paper tape 20, and facilitating production use. In actual application, the paper break detection switch 213 can be a photoelectric sensor or an infrared sensor, etc. The specific structure of the paper break detection sensor 212 can be set accordingly according to actual use needs.

[0074] In some embodiments, the fixing base 100 is provided with a full paper switch 130 corresponding to the paper receiving shaft 230 . The full paper switch 130 can be triggered by the paper tape 20 on the paper receiving shaft 230 to detect the amount of the paper tape 20 on the paper receiving shaft 230 .

[0075] It is understandable that if Figure 6 and Figure 7 As shown, the full paper switch 130 is mounted on the mounting base 100 corresponding to the paper take-up shaft 230. When the paper tape 20 wound on the paper take-up shaft 230 reaches a certain amount, the paper tape 20 on the paper take-up shaft 230 triggers the full paper switch 130, thereby detecting that the paper tape 20 on the paper take-up shaft 230 is full, allowing the user to replace the paper tape 20 in a timely manner. In actual use, the full paper switch 130 may be a micro switch or a pressure switch, and the specific setting can be determined according to actual needs.

[0076] In some embodiments, the printing table paper pad device also includes a tensioning roller 400, and a plurality of tensioning rollers 400 are provided and corresponding fixed seats 100 are respectively distributed on opposite sides of the printing table 10 for the paper tape 20 to be wound and tensioned. At least one tensioning roller 400 is provided with a limiting guide ring 410 for limiting the position of the paper tape 20.

[0077] It is understandable that if Figure 1 、 Figure 9 and Figure 10 As shown, multiple tensioning rollers 400 are distributed on the left and right sides of the printing table 10. The paper strip 20 is wound around the multiple tensioning rollers 400 on both sides of the printing table 10 to achieve tensioning. Some of the tensioning rollers 400 are equipped with limiting guide rings 410. The limiting guide rings 410 limit the position of the paper strip 20 on the tensioning rollers 400, which helps to reduce its deviation, facilitate its movement and guidance, and improve its reliability. In actual application, the number of tensioning rollers 400 and the specific structure of the limiting guide rings 410 can be set according to actual needs.

[0078] In some embodiments, the printing table paper pad device also includes a paper clamping assembly 500, which is connected to the printing table 10 and includes a translation driver 510, a lifting driver 520 and a clamp 530. The translation driver 510 is driven by a connecting seat 511 and can drive the connecting seat 511 to move horizontally. The lifting driver 520 is arranged on the connecting seat 511 and is driven by the clamp 530 to drive the clamp 530 to move up and down, so that the clamp 530 can press the paper tape 20 onto the printing table 10.

[0079] It is understandable that if Figure 1 、 Figure 9 and Figure 10 As shown, the front and rear sides of the printing table 10 are both equipped with paper clamping assemblies 500. During use, the paper tape 20 is placed on the printing table 10. The translation driver 510 drives the connecting seat 511 to move horizontally, driving the lifting driver 520 and the clamping piece 530 to move horizontally. The lifting driver 520 drives the clamping piece 530 to move up and down, so that the clamping piece 530 can press the paper tape 20 against the printing table 10, thereby fixing the paper tape 20 on the printing table 10, preventing the paper tape 20 from shifting during the printing process, improving reliability, and facilitating use. In actual application, the translation driver 510 and the lifting driver 520 can both be pneumatic cylinders or electric push rods, and the specific structure of the clamping piece 530 can be set accordingly according to actual use needs.

[0080] In some embodiments, the printing table paper pad device also includes a rotating arm 610, an elastic member 620, a meter wheel 630 and an encoder 640. The rotating arm 610 is rotatably connected to the printing table 10, and the meter wheel 630 is rotatably connected to the rotating arm 610. The elastic member 620 acts on the rotating arm 610 so that the meter wheel 630 can roll and abut against the paper tape 20. The encoder 640 is connected to the meter wheel 630 for recording the number of rotations of the meter wheel 630.

[0081] It is understandable that if Figure 9 and Figure 10 As shown, a rotating arm 610 is rotatably connected to the underside of the printing table 10, and a meter wheel 630 is rotatably connected to the free end of the rotating arm 610. An elastic member 620 is a spring, with its ends acting on the rotating arm 610 and the printing table 10, respectively, causing the rotating arm 610 to swing toward the paper tape 20, thereby allowing the meter wheel 630 to roll against the paper tape 20. After the entire PCB circuit is printed, the ink-coated paper tape 20 is rotated and rewound by the paper take-up shaft 230. The rewinding of the paper tape 20 drives the meter wheel 630 to roll along it. An encoder 640 is connected to the meter wheel 630 to record the number of rotations of the meter wheel 630, thereby measuring the rewinding movement of the paper tape 20. The control unit controls the start and stop of the paper take-up shaft 230 to ensure that the rewinding amount of the paper tape 20 is equal to the amount of the ink-coated paper tape 20, thereby reducing waste of the paper tape 20 and facilitating its use. Since the specific structures and principles of the meter wheel 630 and the encoder 640 in the embodiment of the present invention are well known to those skilled in the art, they will not be described in detail here.

[0082] According to the printing device of the second embodiment of the present invention, Figure 1 As shown, it includes a printing table paper pad device according to the above-mentioned first embodiment of the present invention.

[0083] According to the printing equipment of the embodiment of the present invention, by adopting the above-mentioned printing table paper pad device, the movable seat 200 can be moved relative to the fixed seat 100 and locked in position by the locking component 300, so that when replacing the paper tape 20, the movable seat 200 can be moved to the paper loading and unloading position, so that the paper loading shaft 210 and the paper receiving shaft 230 can be moved and extended relative to the fixed seat 100 to facilitate the replacement of the paper tape 20 thereon, reduce the trouble of installing and disassembling the shaft, facilitate the rapid replacement of the paper tape 20, facilitate the improvement of production efficiency, and facilitate the use in circuit board printing production.

[0084] Since other components of the printing device according to the embodiment of the present invention are known to those skilled in the art, they will not be described in detail here.

[0085] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A printing table paper pad device, applied to a printing table, characterized in that: include: Two fixing seats (100) are provided and are respectively arranged on opposite sides of the printing table; The movable seat (200) is provided with two and is respectively slidably connected to the two fixed seats (100), one of the two movable seats (200) is provided with a paper-feeding rotating shaft (210) for placing the paper supply tape, and the other is provided with a rotating driver (220) and a paper-receiving rotating shaft (230) for rewinding the paper supply tape, one end of the paper-feeding rotating shaft (210) is rotatably connected to the movable seat (200), and the other end is a free end, one end of the paper-receiving rotating shaft (230) is rotatably connected to the movable seat (200), and the other end is a free end, the rotating driver (220) is drivably connected to the paper-receiving rotating shaft (230) so as to be able to drive the paper-receiving rotating shaft (230) ) rotates, a locking assembly (300) is provided between the fixed seat (100) and the movable seat (200), the movable seat (200) can move relative to the fixed seat (100) to have a working position and a paper picking and placing position, the locking assembly (300) includes a locking driver (310), a locking member (320) and a locking block (330), each of the fixed seats (100) is provided with two locking blocks (330), the two locking blocks (330) on the same fixed seat (100) are respectively distributed corresponding to the working position and the paper picking and placing position, the locking driver (310) is provided on the movable seat (200) and is connected to the The locking member (320) is driven and connected, and the locking driver (310) can drive the locking member (320) to move, so that the locking member (320) cooperates with the locking block (330) at the corresponding position to limit the movement of the movable seat (200) relative to the fixed seat (100), so as to lock the movable seat (200) in the working position or the paper picking and placing position. Each of the fixed seats (100) is provided with two limiting members (110), and the two limiting members (110) are spaced apart along the moving direction of the movable seat (200) and are respectively located at both ends of the moving path of the movable seat (200), so as to limit the movable seat (200) from moving. 0), the fixed seat (100) is provided with an in-position switch (120), the movable seat (200) is correspondingly provided with an in-position sensor (121), the in-position sensor (121) can move with the movable seat (200) to trigger the in-position switch (120), the paper-feeding rotating shaft (210) is connected with a paper-break detection sensor (212) that can rotate with the paper-feeding rotating shaft (210), the movable seat (200) connected with the paper-feeding rotating shaft (210) is correspondingly provided with a paper-break detection switch (213), the paper-break detection switch (213) can detect the rotation of the paper-break detection sensor (212); A paper clamping assembly (500) is connected to a printing table and comprises a translation driver (510), a lifting driver (520) and a clamping piece (530). The translation driver (510) is drivingly connected to a connecting seat (511) and is capable of driving the connecting seat (511) to move horizontally. The lifting driver (520) is arranged on the connecting seat (511) and is drivingly connected to the clamping piece (530) to drive the clamping piece (530) to move up and down, so that the clamping piece (530) can press the paper tape onto the printing table.

2. The printing table paper pad device according to claim 1, characterized in that: The paper-discharging rotating shaft (210) and the paper-collecting rotating shaft (230) are both pneumatic shafts, and the free ends of the paper-discharging rotating shaft (210) and the free ends of the paper-collecting rotating shaft (230) are both detachably connected to a paper locking cover (211) for limiting the separation of the paper tape.

3. The printing table paper pad device according to claim 1, characterized in that: At least one of the two movable seats (200) is provided with a brake assembly (240), and the brake assembly (240) is capable of limiting the rotation of the paper-discharging shaft (210) and / or the paper-collecting shaft (230).

4. The printing table paper pad device according to claim 1, characterized in that: The fixing seat (100) is provided with a full paper switch (130) corresponding to the paper receiving shaft (230), and the full paper switch (130) can be triggered by the paper tape on the paper receiving shaft (230) to detect the amount of paper tape reeled on the paper receiving shaft (230).

5. The printing table paper pad device according to claim 1, characterized in that: It also includes a tensioning roller (400), wherein a plurality of the tensioning rollers (400) are provided and are respectively distributed on opposite sides of the printing table corresponding to the fixing seat (100) for winding and tensioning the paper tape, and at least one of the tensioning rollers (400) is provided with a limiting guide ring (410) for limiting the position of the paper tape.

6. The printing table paper pad device according to claim 1, characterized in that: The invention also includes a rotating arm (610), an elastic member (620), a meter wheel (630) and an encoder (640), wherein the rotating arm (610) is rotatably connected to the printing table, the meter wheel (630) is rotatably connected to the rotating arm (610), the elastic member (620) acts on the rotating arm (610) to enable the meter wheel (630) to roll and abut against the paper tape, and the encoder (640) is connected to the meter wheel (630) to record the number of rotations of the meter wheel (630).

7. A printing device, characterized in that: The invention comprises a printing table paper pad device according to any one of claims 1 to 6.

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