Transfer printing equipment

Abstract

The utility model discloses a pad printing device. Comprising a machine box provided with a controller, an overturning mechanism arranged on the machine box, electrically connected with the controller and used for fixing a workpiece and overturning the workpiece, and a transfer printing mechanism arranged on the machine box and used for printing a pattern on the workpiece. The ink coating mechanism is arranged on one side of the turnover mechanism and located below the transfer printing mechanism, the ink cleaning mechanism is arranged on one side of the ink coating mechanism and electrically connected with the controller, and the turnover mechanism comprises a bearing table used for bearing and fixing a workpiece; the transfer printing mechanism comprises a transfer printing module electrically connected with the controller and a plurality of printing rubber heads connected with the transfer printing module, the positions of the printing rubber heads can correspond to the bearing table, and the printing rubber heads can horizontally move in a reciprocating mode in the direction close to or away from the machine box. The ink coating mechanism is electrically connected with the controller and used for providing ink for the printing rubber head, the overturning mechanism can fix the workpiece and achieve overturning, different faces of the workpiece can be printed conveniently, and the comprehensiveness and flexibility of printing are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to printing equipment technical field, concretely relates to a pad printing equipment. BACKGROUND

[0002] The notebook shell piece can buffer external impact force, prevent internal hardware such as mainboard, hard disk, memory and the like from being damaged due to collision, or internal components from being scratched due to sharp objects, and is an important workpiece for protecting the machine body. In order to meet the individual aesthetic needs of different users, the notebook shell piece usually needs to print various patterns or lines thereon, and currently, pad printing is mostly used for printing workpieces. Pad printing is an indirect intaglio printing device printing technology and has become a main method for printing and decorating various object surfaces.

[0003] During pad printing of the notebook shell piece, the surface of the workpiece is usually printed upward, but the side wall perpendicular to the surface of the notebook shell piece also needs to be printed. The conventional pad printing equipment cannot turn over the workpiece after completing surface printing, and then print the side (i.e., the side wall) of the workpiece. UTILITARY MODEL CONTENTS

[0004] In view of the technical problems existing in the prior art, the utility model provides a pad printing equipment.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A pad printing equipment comprises:

[0007] A case is provided with a controller;

[0008] A turnover mechanism is arranged on the case and electrically connected with the controller to fix and turn over the workpiece. The turnover mechanism comprises a bearing table for bearing and fixing the workpiece, and the bearing table can reciprocate.

[0009] A pad printing mechanism is arranged on the case to print patterns on the workpiece. The pad printing mechanism comprises a pad printing module electrically connected with the controller and a plurality of printing rubber heads connected with the pad printing module. The position of the printing rubber head can correspond to the bearing table, and the printing rubber head can reciprocate horizontally and towards the direction close to or away from the case.

[0010] An ink applying mechanism is arranged on one side of the turnover mechanism and below the pad printing mechanism. The ink applying mechanism is electrically connected with the controller to provide ink for the printing rubber head.

[0011] The ink cleaning mechanism is arranged on one side of the ink applying mechanism and is electrically connected with the controller. The ink cleaning mechanism comprises a tensioning mechanism and an ink cleaning adhesive tape which is detachably connected with the tensioning mechanism. The tensioning mechanism can tension the ink cleaning adhesive tape to clean the ink on the printing rubber head.

[0012] Further, the turnover mechanism further comprises a first bearing seat arranged on the cabinet, a first driving mechanism arranged in the first bearing seat, a second bearing seat arranged on the first bearing seat and connected with the first driving mechanism, a third bearing seat arranged in the second bearing seat, a turnover driving mechanism arranged on the second bearing seat and connected with the third bearing seat to drive the third bearing seat to turn over, a second driving mechanism arranged on the third bearing seat and connected with the bearing table to drive the bearing table to rotate horizontally, and the first driving mechanism can drive the second bearing seat to reciprocate along the length direction of the first bearing seat.

[0013] Further, the first bearing seat comprises a first seat body which is detachably connected with the cabinet and has a free opening at the end away from the cabinet, and a first seat plate connected at the opening end of the first seat body, and the first seat plate and the first seat body are connected to form two through openings respectively located on both sides of the first seat plate;

[0014] The first driving mechanism comprises a first driving motor arranged in the first seat body, a first screw rod connected with the first driving motor, first guide rails distributed on both sides of the first screw rod, and a first moving seat screwed on the first screw rod and in sliding connection with the first guide rails, the first moving seat partially extends from the corresponding through opening and is detachably connected with the second bearing seat, and the first moving seat is provided with a containing groove capable of containing the both ends of the first seat plate;

[0015] The second bearing seat comprises a second seat plate detachably connected with the first moving seat and located at the upper end of the first seat plate, and two side plates vertically connected on the second seat plate and spaced apart, the turnover driving mechanism is connected on the side plates, and the third bearing seat is located between the two side plates;

[0016] The turnover driving mechanism comprises a turnover driving motor mounted on one of the side plates through a first shafting support, and a turnover support shaft mounted on the other side plate;

[0017] The third bearing seat comprises a third seat plate connected with the second driving mechanism, and two side wing plates vertically connected at the lower end of the third seat plate and spaced apart, one of the side wing plates is connected with the first shafting support, and the other side wing plate is connected with the turnover support shaft;

[0018] The second driving mechanism comprises a second driving motor arranged at the lower end of the third seat plate and located between the two side wing plates, and a second shafting support connected between the third seat plate and the bearing table.

[0019] Further, the bearing table comprises a bearing base connected with the second shafting support, a bearing main body connected at the upper end of the bearing base, and a third driving mechanism connected with the bearing base. The bearing main body comprises a first positioning plate and a second positioning plate which are detachably connected at the upper end of the bearing base and arranged in a spaced manner, and two movable bearing plates which are symmetrically arranged in a spaced manner and located between the first positioning plate and the second positioning plate. The first positioning plate and the second positioning plate are provided with adsorption holes for adsorbing workpieces. The third driving mechanism can drive the two movable bearing plates to move towards a direction away from each other so that the movable bearing plates can cooperate with the first positioning plate and the second positioning plate to fix the workpieces. The upper end of the bearing base is further provided with a reset mechanism for resetting the movable bearing plates, and the movable bearing plates can be released from fixing the workpieces after being reset.

[0020] Further, the third driving mechanism comprises a driving cylinder arranged in the bearing base, a driving block connected with the driving cylinder and located between the two movable bearing plates, two positioning sliding plates connected with the lower end of the movable bearing plates in a one-to-one correspondence, a plurality of positioning sliding blocks connected with the lower end of the positioning sliding plates, and a positioning sliding rail in sliding cooperation with the positioning sliding blocks and connected with the upper end of the bearing base. The driving cylinder can drive the driving block to reciprocate in a direction towards or away from the driving block. The driving block comprises a constant diameter section connected with the driving cylinder, and a variable diameter section protruding in a direction away from the constant diameter section. The cross-sectional area of the variable diameter section is smaller than that of the constant diameter section. When the driving block moves in a direction away from the driving cylinder, the constant diameter section can be in contact with the positioning sliding plates and the distance between the two positioning sliding plates can gradually increase. When the driving block moves in a direction towards the driving cylinder, the constant diameter section can be separated from the positioning sliding plates, and the two positioning sliding plates can be reset under the action of the reset mechanism.

[0021] The reset mechanism comprises an installation cavity opened in the positioning sliding plate in a one-to-one correspondence, a positioning stopper arranged in the installation cavity and detachably connected with the upper end of the bearing base, a positioning bolt connected with the positioning stopper, and a reset spring sleeved on the positioning bolt. When the distance between the two movable bearing plates gradually increases, the reset spring is in a compressed state.

[0022] Further, the pad printing module comprises two support frames arranged on the upper end of the cabinet, two support seats arranged in parallel and spaced apart between the two support frames, a plurality of fourth driving mechanisms arranged in the support seats one by one, and a lifting module connected with the fourth driving mechanism one by one. The lower end of each lifting module is connected with a plurality of printing rubber heads. The fourth driving mechanism can drive the lifting module to reciprocate along the length direction of the support seat, so that the printing rubber head can move above the workpiece on the support table, the ink applying mechanism and the ink cleaning mechanism. The lifting module can drive the printing rubber head to move up and down, so that the printing rubber head can contact the workpiece on the support table, the ink applying mechanism and the ink cleaning mechanism.

[0023] Further, the lifting module comprises a lifting bottom plate connected with the fourth driving mechanism on one side, two second guide rails arranged along the height direction of the lifting bottom plate on the other side of the lifting bottom plate, a plurality of sliding blocks connected with the second guide rails, a fifth driving mechanism arranged between the two second guide rails, a lifting sliding plate connected with the fifth driving mechanism, a mounting seat connected with the lower end of the lifting sliding plate, a rotary driving motor mounted on the mounting seat, a first rubber head bottom plate connected with the rotary driving motor through a third shaft support, a plurality of connecting pieces connected with the first rubber head bottom plate on one end, a second rubber head bottom plate connected with the connecting pieces on the other end and arranged below the first rubber head bottom plate, a plurality of lifting cylinders arranged on the upper end of the second rubber head bottom plate, and a plurality of rubber head connecting seats connected with the lifting cylinders one by one and arranged below the second rubber head bottom plate for connecting the printing rubber heads. The lifting sliding plate is also detachably connected with the sliding block. The fifth driving mechanism can drive the lifting sliding plate to reciprocate along the height direction of the lifting bottom plate. The rotary driving motor can drive the first rubber head bottom plate to rotate horizontally. The lifting cylinder can drive the rubber head connecting seat to move up and down, and the rubber head connecting seat is connected with a guide piece for guiding the lifting movement of the rubber head.

[0024] Further, the ink coating mechanism comprises a plurality of support columns arranged on the upper end of the cabinet, a sliding table base connected to the upper end of the support columns, a sixth driving mechanism arranged in the sliding table base, and a plurality of ink supply mechanisms arranged on the upper end of the sliding table base. The top end of the sliding table base is connected with a sliding table sliding plate connected with the sixth driving mechanism in the sliding table base. The sixth driving mechanism can drive the sliding table sliding plate to reciprocate along the length direction of the sliding table base. A sliding table flat plate is connected to the upper end of the sliding table sliding plate. A plurality of ink supply mechanisms are detachably connected to the upper end of the sliding table flat plate. Each of the ink supply mechanisms comprises a mechanism base plate connected with the sliding table flat plate, a plurality of barriers arranged on the upper end of the mechanism base plate and capable of forming an installation area, a printing plate installed on the installation area, an oil cup arranged on one side of the printing plate, and a seventh driving mechanism connected with the oil cup and capable of driving the oil cup to reciprocate on the upper end of the printing plate.

[0025] Further, the tensioning mechanism comprises a support connected with the cabinet, an installation main plate arranged on the support, and a plurality of winding mechanisms arranged on the installation main plate in a spaced manner. Each of the winding mechanisms comprises a winding motor installed on the side of the installation main plate away from the ink coating mechanism, a winding core connected with the winding motor and arranged on one side of the installation main plate, an unwinding core arranged on the installation main plate and located between the winding core and the unwinding core, and a support plate arranged on the installation main plate and located between the winding core and the unwinding core. The height of the support plate is higher than that of the winding core and the unwinding core for supporting the lower end of the ink removing adhesive tape bonding surface. The winding motor can drive the winding core to wind the used ink removing adhesive tape.

[0026] Further, the controller is further electrically connected with a fault alarm.

[0027] In summary, the beneficial effects of the utility model are: 1. It has multi-surface printing capability, the turnover mechanism can fix and turn over the workpiece, printing on the notebook computer shell surface and side wall and other different surfaces is facilitated, the comprehensiveness of printing is improved, and the printing needs of diversified notebook computer shells are met. The bearing table can move longitudinally, the second driving mechanism is used for horizontal rotation of the bearing table, the position of the surface to be printed of the workpiece can be adjusted flexibly, the printing head can move horizontally and approach or move away from the direction of the case, and can also rotate horizontally and lift separately, the printing position can be positioned accurately, and the notebook computer shells of different sizes and shapes are adapted. 2. Multiple function mechanisms such as turnover, pad printing, ink coating and ink cleaning are integrated, the mechanisms work cooperatively, an integrated process from fixing the workpiece, printing, ink coating to ink cleaning is realized, the operation process is simplified, manual intervention and connection time between processes are reduced, and the overall production efficiency is improved. The printing head can be flexibly switched between the bearing table, the ink coating mechanism and the ink cleaning mechanism, different process switching such as ink coating, printing and ink cleaning is quickly completed, and the batch production needs are adapted. 3. The ink coating mechanism accurately provides ink for the printing head, the ink pan moves reciprocally on the printing plate to make the ink uniformly distributed, the amount of ink for each printing is ensured to be uniform and appropriate, and the definition and fullness of the printed pattern and lines are improved. 4. The ink cleaning mechanism is tensioned by the tensioning mechanism, the ink cleaning adhesive tape is continuously updated, residual ink on the printing head is effectively removed, the influence of residual ink on subsequent printing quality is avoided, and the consistency of printing effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structure schematic view of a pad printing equipment is provided in the utility model.

[0029] Figure 2 A three-dimensional structure schematic view of a turnover mechanism in the utility model.

[0030] Figure 3 A top view of a first driving mechanism in the utility model.

[0031] Figure 4 A three-dimensional structure schematic view of a second bearing seat in the utility model.

[0032] Figure 5 A three-dimensional structure schematic view of a bearing table in the utility model.

[0033] Figure 6 A front view of the bearing table in a state that the bearing main body is not installed.

[0034] Figure 7 A top view. Figure 6 A three-dimensional structure schematic view of a pad printing equipment.

[0035] Figure 8 A structure schematic view of a pad printing equipment on which a workpiece is loaded.

[0036] Figure 9 AFigure 8 A local enlarged view at B.

[0037] Figure 10 A schematic diagram of the three-dimensional structure of the printing mechanism in the present application.

[0038] Figure 11 A Figure 1 A local enlarged view at B.

[0039] Figure 12 A schematic diagram of the three-dimensional structure of the printing mechanism in the present application.

[0040] Figure 13 A schematic diagram of the three-dimensional structure of the printing mechanism in the present application.

[0041] In the figure, 100 - case, 200 - turnover mechanism, 210 - first bearing seat, 211 - first seat body, 212 - first seat plate, 213 - through port, 220 - first driving mechanism, 221 - first driving motor, 222 - first screw rod, 223 - first guide rail, 224 - first moving seat, 2240 - extension part, 2241 - containing groove, 230 - second bearing seat, 231 - second seat plate, 2310 - vacuum pressure sensor, 232 - side plate, 240 - turnover driving mechanism, 241 - turnover driving motor, 242 - turnover support pivot, 243 - first shafting support, 250 - third bearing seat, 251 - third seat plate, 252 - side wing plate, 253 - reinforcing plate, 260 - second driving mechanism, 261 - second driving motor, 262 - second shafting support, 270 - bearing table, 271 - bearing base, 272 - bearing main body, 2721 - first positioning plate, 2722 - second positioning plate, 2723 - movable bearing plate, 272A - positioning protrusion, 272B - adsorption hole, 273 - third driving mechanism, 2731 - driving cylinder, 2732 - driving block, 2732A - constant diameter section, 2732B - variable diameter section, 2732B0 - shielding plate, 2733 - positioning sliding plate, 2734 - positioning sliding block, 2735 - positioning sliding rail, 274 - reset mechanism, 2741 - mounting cavity, 2742 - positioning stopper, 2743 - positioning bolt, 2744 - reset spring, 300 - pad printing mechanism, 310 - pad printing module, 311 - support frame, 3110 - fault alarm, 312 - support seat, 313 - lifting module, 313A - lifting bottom plate, 313B - second guide rail, 313C - sliding block, 313D - fifth driving mechanism, 313E - lifting sliding plate, 313F - mounting seat, 313G - rotary driving motor, 313H - first rubber head bottom plate, 313I - second rubber head bottom plate, 313J - connecting piece, 313K - lifting cylinder, 313L - rubber head connecting seat, 313M - guide piece, 320 - printing rubber head, 400 - ink applying mechanism, 410 - support column, 420 - sliding table base, 421 - sliding table plane plate, 430 - ink supply mechanism, 431 - mechanism bottom plate, 432 - baffle, 433 - printing plate, 434 - oil cup, 435 - seventh driving mechanism, 500 - tensioning mechanism, 510 - support seat, 520 - mounting main plate, 530 - winding mechanism, 531 - winding motor, 532 - winding core, 533 - unwinding core, 534 - support plate, 600 - workpiece, 610 - side wall. DETAILED DESCRIPTION

[0042] The utility model will be further described below in combination with specific drawings.

[0043] Please refer to Figure 1The utility model provides a pad printing equipment, including the case 100 of installing the controller, be located the case 100 and with controller electricity is connected to be used for fixing work piece 600 and can overturn the turnover mechanism 200 of work piece 600, be located the case 100 to be used for printing pattern on work piece 600 pad printing mechanism 300, be located the one side of turnover mechanism 200 and be located pad printing mechanism 300 below ink application mechanism 400 and be located ink application mechanism 400 one side and with controller electricity is connected clear ink mechanism. Turnover mechanism 200 includes a for carrying and fixed work piece 600's bearing table 270, and bearing table 270 can along the case 100 longitudinal reciprocating movement. Pad printing mechanism 300 includes with controller electricity is connected pad printing mould group 310 and is connected with pad printing mould group 310 several printing rubber head 320, and printing rubber head 320 position can correspond with bearing table 270, and printing rubber head 320 can reciprocating movement horizontally and towards close or far from the case 100 direction. Ink application mechanism 400 with controller electricity is connected to be used for providing printing rubber head 320 with ink. Clear ink mechanism includes tensioning mechanism 500 and with tensioning mechanism 500 detachable connection clear ink adhesive tape, and tensioning mechanism 500 can clear ink adhesive tape tensioning to be used for removing printing rubber head 320 on ink. Turnover mechanism 200 can fix work piece 600 and realize overturning, and it is convenient to print different faces of work piece 600, has improved the overall production efficiency of printing comprehensiveness and flexibility, reduces the tediousness and error of manual overturning, promotes the overall production efficiency. Integrated turnover, pad printing, ink application and clear ink multiple function mechanism, and each mechanism works together, realizes from fixed work piece, printing, ink application to clear ink integration process, simplifies printing operation process, reduces manual intervention, improves production efficiency. Ink application mechanism 400 can accurately provide printing rubber head 320 with ink, ensure that the ink amount of each printing is even, appropriate, clear ink mechanism through tensioning mechanism 500 tensioning clear ink adhesive tape, effectively removes printing rubber head 320 on residual ink, avoids residual ink to influence subsequent printing quality, guarantees pattern and the consistency of the definition of line printing.

[0044] The turnover mechanism 200 further comprises a first bearing seat 210 arranged on the cabinet 100, a first driving mechanism 220 arranged in the first bearing seat 210, a second bearing seat 230 arranged on the first bearing seat 210 and connected with the first driving mechanism 220, a third bearing seat 250 arranged in the second bearing seat 230, a turnover driving mechanism 240 arranged on the second bearing seat 230 and connected with the third bearing seat 250 for driving the third bearing seat 250 to turn over, and a second driving mechanism 260 arranged on the third bearing seat 250 and connected with a bearing table 270 for driving the bearing table 270 to rotate horizontally. The first driving mechanism 220 can drive the second bearing seat 230 to reciprocate along the length direction of the first bearing seat 210. After the bearing table 270 is arranged and fixed with the workpiece 600, the first driving mechanism 220 is started, and the workpiece on the bearing table 270 can be adjusted in position by reciprocating along the length direction of the first bearing seat 210 (i.e. reciprocating longitudinally on the cabinet 100). After the turnover driving mechanism 240 is started, the workpiece 600 on the bearing table 270 can be turned over, and the switching of the printing surface of the workpiece 600 can be realized. After the second driving mechanism 260 is started, the bearing table 270 can rotate horizontally, and the printing position on the same printing surface can be adjusted.

[0045] Please refer to Figure 2 The first bearing seat 210 comprises a first seat body 211 which is detachably connected with the cabinet 100 and has a free opening at the end away from the cabinet 100, and a first seat plate 212 which is connected at the opening end position of the first seat body 211. The first seat body 211 is preferably bolted with the cabinet 100, and the first seat plate 212 is connected with the first seat body 211 to form two through openings 213 respectively located at the two sides of the first seat plate 212. The first driving mechanism 220 comprises a first driving motor 221 arranged in the first seat body 211, a first screw rod 222 connected with the first driving motor 221, first guide rails 223 distributed at the two sides of the first screw rod 222, and a first moving seat 224 which is screwed on the first screw rod 222 and is in sliding connection with the first guide rails 223. The protruding part 2240 of the first moving seat 224 protrudes from the corresponding through opening 213 and is screwed with the second bearing seat 230. The first moving seat 224 is provided with a containing groove 2241 capable of containing the two ends of the first seat plate 212, and the containing groove 2241 is arranged along the length direction of the first moving seat 224. Please refer to Figure 3When the first driving motor 221 is started, the first screw rod 222 rotates to drive the first moving seat 224 to reciprocate along the arrangement direction of the first guide rail 223. The first guide rail 223 is arranged along the length direction of the first seat body 211. The two protruding portions 2240 of the first moving seat 224 form a U-shaped space in which the first seat plate 212 is accommodated. The two accommodating grooves 2241 are arranged at the position of the U-shaped space. When the first moving seat 224 moves, the first seat plate 212 can also guide the movement of the first moving seat 224.

[0046] Please refer to Figure 4 The second bearing seat 230 includes a second seat plate 231 which is screwed with the first moving seat 224 and is arranged at the upper end of the first seat plate 212, and two side plates 232 which are vertically connected to the second seat plate 231 and are spaced apart. The overturning driving mechanism 240 is connected to the side plates 232, and the third bearing seat 250 is located between the two side plates 232. The overturning driving mechanism 240 includes an overturning driving motor 241 which is installed on one of the side plates 232 through a first shafting support 243, and an overturning support shaft 242 which is installed on the other side plate 232. The first shafting support 243 includes a bearing seat and a bearing connected to the bearing seat. The third bearing seat 250 includes a third seat plate 251 which is connected with the second driving mechanism 260, and two side wing plates 252 which are vertically connected to the lower end of the third seat plate 251 and are spaced apart. The two side wing plates 252 are connected through a reinforcing plate 253. One of the side wing plates 252 is connected with the bearing in the first shafting support 243, and the other side wing plate 252 is connected with the overturning support shaft 242. When the overturning driving motor 241 is started, the third bearing seat 250 installed between the two side plates 232 can rotate around the overturning support shaft 242, so as to change the processing surface after the surface of the workpiece 600 is printed, and directly overturn the side wall 610 to align the printing rubber head 320 to print the side wall 610 of the workpiece 600.

[0047] The second driving mechanism 260 includes a second driving motor 261 which is arranged at the lower end of the third seat plate 251 and is located between the two side wing plates 252, and a second shafting support 262 which is connected between the third seat plate 251 and the bearing table 270. The structure of the second shafting support 262 is consistent with that of the first shafting support 243. When the second driving motor 261 is started, the bearing table 270 can rotate horizontally above the third seat plate 251 to realize the adjustment of the printing position of the same printing surface.

[0048] The bearing table 270 comprises a bearing base 271 connected with the second shaft support 262, a bearing body 272 connected with the upper end of the bearing base 271, and a third driving mechanism 273 connected with the bearing base 271. The bearing body 272 comprises a first positioning plate 2721 and a second positioning plate 2722 detachably connected with the upper end of the bearing base 271 and arranged in intervals, and two movable bearing plates 2723 arranged in intervals and symmetrically between the first positioning plate 2721 and the second positioning plate 2722. Please refer to Figure 5 , the first positioning plate 2721 and the second positioning plate 2722 are provided with adsorption holes 272B for adsorbing the workpiece, and the second base plate 231 is provided with a vacuum pressure sensor 2310 electrically connected with the controller to detect the pressure change in the adsorption passage. The third driving mechanism 273 can drive the two movable bearing plates 2723 to move away from each other so that the movable bearing plates 2723 can cooperate with the first positioning plate 2721 and the second positioning plate 2722 to fix the workpiece 600. Please refer to Figure 8 and Figure 9 , the shape of the bearing body 272 is adapted to the notebook shell, the workpiece 600 is buckled on the bearing body 272, and the first positioning plate 2721 and the second positioning plate 2722 are provided with a plurality of positioning protrusions 272A for preliminarily positioning the workpiece 600; after the preliminary positioning of the workpiece 600 is completed, the adsorption holes 272B adsorb the workpiece, and the third driving mechanism 273 drives the two movable bearing plates 2723 to move horizontally away from each other to open, so that the side walls of the movable bearing plates 2723 contact the side walls 610 of the workpiece 600. The movable bearing plates 2723 not only play a role in fixing the workpiece, but also provide stable and reliable support for the printing rubber head 320 to contact the workpiece when printing the side walls 610. The bearing base 271 is further provided with a reset mechanism 274 for resetting the movable bearing plates 2723, and after the movable bearing plates 2723 are reset, the fixation of the workpiece is released, which facilitates the above-mentioned printing process of the next workpiece.

[0049] Please refer to Figure 6The third driving mechanism 273 comprises a driving cylinder 2731 arranged in the bearing base 271, a driving block 2732 connected with the driving cylinder 2731 and located between the two bearing plates, two positioning sliding plates 2733 connected with the lower ends of the bearing plates in one-to-one correspondence, a plurality of positioning sliding blocks 2734 connected with the lower ends of the positioning sliding plates 2733, and a positioning sliding rail 2735 in sliding fit with the positioning sliding blocks 2734 and connected with the upper end of the bearing base 271. The driving cylinder 2731 can drive the driving block 2732 to reciprocate towards the direction of approaching or moving away from the driving block 2732. The driving block 2732 comprises a constant-diameter section 2732A connected with the driving cylinder 2731 and a variable-diameter section 2732B protruding towards the direction of moving away from the constant-diameter section 2732A. The cross-sectional area of the variable-diameter section 2732B is smaller than that of the constant-diameter section 2732A. A shielding plate 2732B0 is screwed on the top surface of the variable-diameter section 2732B. When the driving block 2732 moves towards the direction of moving away from the driving cylinder 2731 (i.e. the driving block 2732 moves upwards), the constant-diameter section 2732A can be in contact with the positioning sliding plates 2733. The constant-diameter section 2732A extrudes the positioning sliding plates 2733, and the two positioning sliding plates 2733 move outward, so that the distance between the two positioning sliding plates 2733 gradually increases. When the driving block 2732 moves towards the direction of approaching the driving cylinder 2731, the constant-diameter section 2732A can be separated from the positioning sliding plates 2733. The two positioning sliding plates 2733 separated from each other are reset under the action of the reset mechanism 274.

[0050] Please refer to Figure 7 The reset mechanism 274 comprises a mounting cavity opened in the positioning sliding plate 2733 in one-to-one correspondence, a positioning stopper 2742 arranged in the mounting cavity and screwed with the upper end of the bearing base 271, a positioning bolt 2743 connected with the positioning stopper 2742, and a reset spring 2744 sleeved on the positioning bolt 2743. When the distance between the two bearing plates gradually increases, the reset spring 2744 is in a compressed state. After the constant-diameter section 2732A is separated from the positioning sliding plate 2733, the reset spring 2744 in the compressed state resets the bearing plate on the positioning sliding plate 2733.

[0051] Please refer to Figure 1 and Figure 10The pad printing module 310 includes two support frames 311 arranged at the upper end of the cabinet 100, two support seats 312 connected between the two support frames 311 and arranged in parallel and spaced apart, a plurality of fourth driving mechanisms arranged in the support seats 312 one by one, and a plurality of lifting modules 313 connected with the fourth driving mechanisms one by one in a detachable manner. The lower end of each lifting module 313 is connected with a plurality of printing rubber heads 320. The structure of the support seat 312 is consistent with that of the first bearing seat 271210, and the structure of the fourth driving mechanism is consistent with that of the first driving mechanism 220. The fourth driving mechanism can drive the lifting module 313 to reciprocate along the length direction of the support seat 312, so that the printing rubber head 320 can move above the workpiece 600 on the bearing table 270, the ink applying mechanism 400 and the ink cleaning mechanism. The lifting module 313 can drive the printing rubber head 320 to move up and down, so that the printing rubber head 320 can contact the workpiece 600 on the bearing table 270, the ink applying mechanism 400 and the ink cleaning mechanism. The printing rubber head 320 can be flexibly switched between different mechanisms, can print different parts of the notebook shell, and can be freely switched between different processes such as ink applying, printing and ink cleaning, greatly improving the flexibility and adaptability of printing. Because the position and height of the printing rubber head 320 can be flexibly adjusted, it can adapt to notebook shell pieces of different sizes and shapes, and meet diversified production needs.

[0052] Please refer to Figure 1 , Figure 10 and Figure 11The lifting module 313 includes a lifting base plate 313A connected to the fourth driving mechanism, two second guide rails 313B arranged along the height direction of the lifting base plate 313A, a plurality of sliding blocks 313C connected to the second guide rails 313B, a fifth driving mechanism 313D arranged between the two second guide rails 313B, a lifting sliding plate 313E connected to the fifth driving mechanism 313D, a mounting seat 313F connected to the lower end of the lifting sliding plate 313E, a rotating driving motor 313G mounted on the mounting seat 313F, a first rubber head base plate 313H connected to the rotating driving motor 313G, a plurality of connecting pieces 313J connected to one end of the first rubber head base plate 313H, a second rubber head base plate 313I connected to the other end of the connecting pieces 313J and arranged below the first rubber head base plate 313H, a plurality of lifting cylinders 313K arranged on the upper end of the second rubber head base plate 313I, and a plurality of rubber head connecting seats 313L connected to the lifting cylinders 313K and arranged below the second rubber head base plate 313I to connect the printing rubber heads 320. The fifth driving mechanism 313D can drive the lifting sliding plate 313E to move reciprocally along the height direction of the lifting base plate 313A. The fifth driving mechanism 313D includes a motor and a screw connected to the motor, and the screw is connected to the lifting sliding plate 313E to drive the lifting sliding plate 313E to move up and down along the lifting base plate 313A. The lifting sliding plate 313E is also connected to the sliding blocks 313C, and the sliding blocks 313C slide on the second guide rails 313B to guide the lifting movement. The rotating driving motor 313G can drive the first rubber head base plate 313H to rotate horizontally, so as to realize the horizontal rotation and position change of the printing rubber heads 320. The lifting cylinders 313K can drive the rubber head connecting seats 313L to move up and down, and the rubber head connecting seats 313L are connected with guide pieces 313M for guiding the lifting movement of the rubber heads. When the lifting cylinders 313K are started, the corresponding printing rubber heads 320 can be individually controlled to move up and down to complete printing, ink taking or ink cleaning.

[0053] Please refer to Figure 1 and Figure 12The ink coating mechanism 400 comprises a plurality of support columns 410 arranged on the upper end of the cabinet 100, a sliding table base 420 connected to the upper end of the support columns 410, a sixth driving mechanism arranged in the sliding table base 420, and a plurality of ink supply mechanisms 430 arranged on the upper end of the sliding table base 420. The top end of the sliding table base 420 is connected with a sliding table sliding plate connected with the sixth driving mechanism in the sliding table base 420. The sixth driving mechanism comprises a motor and a lead screw connected with the motor. The lead screw is screwed with the sliding table sliding plate. The sixth driving mechanism can drive the sliding table sliding plate to reciprocate along the length direction of the sliding table base 420. A sliding table flat plate 421 is connected to the upper end of the sliding table sliding plate. The plurality of ink supply mechanisms 430 are screwed on the upper end of the sliding table flat plate 421. Each of the ink supply mechanisms 430 comprises a mechanism base plate 431 connected with the sliding table flat plate 421, a plurality of barriers 432 arranged on the upper end of the mechanism base plate 431 and capable of forming an installation area, a printing plate 433 installed in the installation area, an oil cup 434 arranged on one side of the printing plate 433, and a seventh driving mechanism 435 connected with the oil cup 434 and capable of driving the oil cup 434 to reciprocate on the upper end of the printing plate 433. The seventh driving mechanism 435 preferably adopts an air cylinder. The oil cup 434 in each of the ink supply mechanisms 430 is driven by the seventh driving mechanism 435 to reciprocate on the upper end of the printing plate 433, so as to evenly coat ink on the printing plate 433. When the printing rubber head 320 is lowered to contact the printing plate 433, the printing rubber head 320 can obtain appropriate ink, which prepares for subsequent printing of patterns and lines on the notebook computer shell. The sixth driving mechanism can drive the sliding table sliding plate to reciprocate along the length direction of the sliding table base 420, so as to drive the ink supply mechanisms 430 connected with the sliding table flat plate 421 to adjust the positions. The ink supply mechanisms 430 can be accurately matched with the printing rubber head 320, so as to ensure that the printing rubber head 320 can smoothly obtain ink from the printing plate 433.

[0054] Please refer to Figure 1 and Figure 13The tensioning mechanism 500 comprises a support 510 connected with the machine case 100, a mounting main plate 520 arranged on the support 510, and a plurality of winding mechanisms 530 arranged on the mounting main plate 520 in a spaced manner. Each winding mechanism 530 comprises a winding motor 531 mounted on the mounting main plate 520 away from the ink applying mechanism 400, a winding core 532 connected with the winding motor 531 and arranged on one side of the mounting main plate 520, a unwinding core 533 arranged on the mounting main plate 520 and located on one side of the winding core 532, and a support plate 534 arranged on the mounting main plate 520 and located between the winding core 532 and the unwinding core 533. The height of the support plate 534 is higher than that of the winding core 532 and the unwinding core 533, so as to support the lower end of the adhesive surface of the ink cleaning tape. The winding motor 531 can drive the winding core 532 to wind the used ink cleaning tape. When the ink cleaning tape is mounted on the tensioning mechanism 500, the unwinding core 533 is inserted into the paper core of the ink cleaning tape, the ink cleaning tape is pulled through the support plate 534, the adhesive surface of the ink cleaning tape is away from the top surface of the support plate 534, and then the tape is wound on the winding core 532. The pad printing mechanism 300 can move horizontally to the upper end of the support plate 534. After the printing pad 320 moves up and down, the printing pad 320 can be attached to the adhesive surface of the ink cleaning tape on the top surface of the support plate 534 to remove the ink on the printing pad 320. The support plate 534 provides stable support for the printing pad 320 to contact the ink cleaning tape. The height of the support plate 534 is higher than that of the winding core 532 and the unwinding core 533, which can effectively support the lower end of the adhesive surface of the ink cleaning tape, so that the ink cleaning tape remains in a tensioned state. This ensures that the printing pad 320 fully and stably contacts the adhesive surface of the ink cleaning tape, improves the ink cleaning effect, and avoids the problem of incomplete ink cleaning caused by loose tape. The winding motor 531 drives the winding core 532 to wind the used ink cleaning tape, and continuously updates the area of the ink cleaning tape that contacts the printing pad 320. The clean tape part is always used for ink cleaning, which ensures good ink cleaning effect every time and avoids the influence of residual ink on subsequent ink cleaning and printing quality.

[0055] The controller is also electrically connected with a fault alarm 3110, which can prompt and alarm the machine fault.

[0056] The printing equipment has the following advantages: 1. The printing equipment has multi-surface printing capability. The turnover mechanism 200 can fix and turn the workpiece 600, so that different surfaces of the notebook shell, such as the side wall 610, can be printed, the comprehensiveness of printing is improved, and the printing needs of diversified notebook shells are met. The bearing table 270 can move longitudinally reciprocally, and cooperates with the second driving mechanism 260 to make the bearing table 270 rotate horizontally, so that the position of the surface to be printed of the workpiece 600 can be adjusted flexibly. The printing rubber head 320 can move horizontally and close to or away from the direction of the cabinet 100, and can also rotate horizontally and lift separately, so that the printing position can be positioned accurately, and notebook shells of different sizes and shapes can be adapted. 2. The printing equipment integrates multiple functional mechanisms such as turnover, pad printing, ink coating and ink cleaning, and the mechanisms work cooperatively to realize an integrated process from fixing the workpiece 600, printing, ink coating to ink cleaning, so that the operation process is simplified, manual intervention and connection time between processes are reduced, and the overall production efficiency is improved. The printing rubber head 320 can flexibly switch positions among the bearing table 270, the ink coating mechanism 400 and the ink cleaning mechanism, so that different process switching such as ink coating, printing and ink cleaning can be completed quickly, and batch production needs can be met. 3. The ink coating mechanism 400 accurately provides ink for the printing rubber head 320. The ink cup 434 moves reciprocally on the printing plate 433 to make the ink distribute uniformly, so that the amount of ink for each printing is uniform and appropriate, and the clarity and fullness of the printed pattern and lines are improved. 4. The ink cleaning mechanism continuously updates the ink cleaning area by tensioning the ink cleaning adhesive tape through the tensioning mechanism 500, effectively removes the residual ink on the printing rubber head 320, avoids the influence of residual ink on subsequent printing quality, and ensures the consistency of printing effect.

[0057] The above is only an embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structure, direct or indirect application in other related technical fields, is also within the patent protection range of the present application.

Claims

1. Pad printing apparatus, characterized in that The utility model relates to a kind of printing machine, including: Machine case, the controller is installed in the machine case; Turnover mechanism, which is provided on the machine case and electrically connected with the controller, is used for fixing workpieces and can turn over the workpieces, the turnover mechanism includes a bearing table for carrying and fixing workpieces, and the bearing table can reciprocate; Pad printing mechanism, which is provided on the machine case, is used for printing patterns on workpieces, the pad printing mechanism includes a pad printing die group electrically connected with the controller and a plurality of printing rubber heads connected with the pad printing die group, the positions of the printing rubber heads can correspond to the bearing table, and the printing rubber heads can reciprocate horizontally and towards the direction of approaching or moving away from the machine case; Inking mechanism, which is provided on one side of the turnover mechanism and below the pad printing mechanism, is electrically connected with the controller to provide ink for the printing rubber heads; Ink cleaning mechanism, which is provided on one side of the inking mechanism and electrically connected with the controller, includes a tensioning mechanism and an ink cleaning rubber belt detachably connected with the tensioning mechanism, and the tensioning mechanism can tension the ink cleaning rubber belt to clean ink on the printing rubber heads.

2. Pad printing apparatus according to claim 1, characterized in that: The turnover mechanism further includes a first bearing seat provided on the machine case, a first driving mechanism installed in the first bearing seat, a second bearing seat provided on the first bearing seat and connected with the first driving mechanism, a third bearing seat provided in the second bearing seat, a turnover driving mechanism installed on the second bearing seat and connected with the third bearing seat to drive the third bearing seat to turn over, and a second driving mechanism provided on the third bearing seat and connected with the bearing table to drive the bearing table to rotate horizontally, and the first driving mechanism can drive the second bearing seat to reciprocate along the length direction of the first bearing seat.

3. Pad printing apparatus according to claim 2, characterized in that: The first bearing seat includes a first seat body detachably connected with the machine case and having a free opening at one end away from the machine case, and a first seat plate connected at the opening end of the first seat body, and the first seat plate forms two through openings respectively located on both sides of the first seat plate after being connected with the first seat body; The first driving mechanism includes a first driving motor provided in the first seat body, a first screw connected with the first driving motor, first guide rails distributed on both sides of the first screw, and a first moving seat screwed on the first screw and slidably connected with the first guide rails, the first moving seat partially extends from the corresponding through opening and is detachably connected with the second bearing seat, and the first moving seat is provided with a containing groove capable of containing both ends of the first seat plate correspondingly; The second bearing seat includes a second seat plate detachably connected with the first moving seat and located at the upper end of the first seat plate, and two side plates vertically connected with the second seat plate and spaced apart, the turnover driving mechanism is connected with the side plates, and the third bearing seat is located between the two side plates; The turnover driving mechanism includes a turnover driving motor installed on one of the side plates through a first shaft support and a turnover support shaft installed on the other side plate. The third bearing seat comprises a third seat plate connected with the second driving mechanism, and two side wing plates connected vertically at the lower end of the third seat plate and spaced apart, one of the side wing plates being connected with the first shafting support, and the other side wing plate being connected with the turnover support rotating shaft; The second driving mechanism comprises a second driving motor arranged at the lower end of the third seat plate and located between the two side wing plates, and a second shafting support connected between the third seat plate and the bearing table.

4. Pad printing apparatus according to claim 3, characterized in that: The bearing table comprises a bearing base connected with the second shafting support, a bearing main body connected at the upper end of the bearing base, and a third driving mechanism connected with the bearing seat, the bearing main body comprising a first positioning plate and a second positioning plate detachably connected at the upper end of the bearing base and spaced apart, and two movable bearing plates symmetrically arranged and located between the first positioning plate and the second positioning plate, the first positioning plate and the second positioning plate being provided with adsorption holes for adsorbing workpieces; the third driving mechanism is capable of driving the two movable bearing plates to move away from each other so that the movable bearing plates can cooperate with the first positioning plate and the second positioning plate to fix the workpieces, and the upper end of the bearing base is further provided with a reset mechanism for resetting the movable bearing plates, the movable bearing plates being capable of being released from fixing the workpieces after being reset.

5. Pad printing apparatus according to claim 4, characterized in that: The third driving mechanism comprises a driving cylinder arranged in the bearing base, a driving block connected with the driving cylinder and located between the two movable bearing plates, two positioning sliding plates connected with the lower end of the movable bearing plates one by one, a plurality of positioning sliding blocks connected with the lower end of the positioning sliding plates, and a positioning sliding rail in sliding cooperation with the positioning sliding blocks and connected with the upper end of the bearing base, the driving cylinder being capable of driving the driving block to reciprocate in the direction of approaching or moving away from the driving block, the driving block comprising a constant diameter section connected with the driving cylinder, and a variable diameter section connected at one end with the constant diameter section and protruding in the direction away from the constant diameter section at the other end, the cross-sectional area of the variable diameter section being smaller than that of the constant diameter section, when the driving block moves in the direction away from the driving cylinder, the constant diameter section can be in contact with the positioning sliding plates and the distance between the two positioning sliding plates can be gradually increased, when the driving block moves in the direction approaching the driving cylinder, the constant diameter section can be separated from the positioning sliding plates, and the two positioning sliding plates can be reset under the action of the reset mechanism after being separated; The reset mechanism comprises an installation cavity opened in the positioning sliding plate one by one, a positioning stopper arranged in the installation cavity and detachably connected with the upper end of the bearing base, a positioning bolt connected with the positioning stopper, and a reset spring sleeved on the positioning bolt, the reset spring being in a compressed state when the distance between the two movable bearing plates is gradually increased.

6. The pad printing apparatus of claim 1, wherein: The pad printing mold group comprises two support frames arranged on the upper end of the cabinet, two support seats arranged in parallel and spaced apart between the two support frames, a plurality of fourth driving mechanisms arranged in the support seats one by one, and a lifting mold group connected with the fourth driving mechanisms one by one. The lower end of each lifting mold group is connected with a plurality of printing rubber heads. The fourth driving mechanism can drive the lifting mold group to reciprocate along the length direction of the support seat, so that the printing rubber head can move above the workpiece on the support table, the ink applying mechanism and the ink cleaning mechanism. The lifting mold group can drive the printing rubber head to move up and down, so that the printing rubber head can contact the workpiece on the support table, the ink applying mechanism and the ink cleaning mechanism.

7. Pad printing apparatus according to claim 6, characterized in that: The lifting mold group comprises a lifting bottom plate connected with the fourth driving mechanism on one side, two second guide rails arranged along the height direction of the lifting bottom plate on the other side of the lifting bottom plate, a plurality of sliding blocks connected with the second guide rails, a fifth driving mechanism arranged between the two second guide rails, a lifting sliding plate connected with the fifth driving mechanism, a mounting seat connected with the lower end of the lifting sliding plate, a rotary driving motor mounted on the mounting seat, a first rubber head bottom plate connected below the rotary driving motor through a third shaft support, a plurality of connecting pieces connected with the first rubber head bottom plate on one end, a second rubber head bottom plate connected with the other end of the connecting piece and arranged below the first rubber head bottom plate, a plurality of lifting cylinders arranged on the upper end of the second rubber head bottom plate, and a rubber head connecting seat connected with the lifting cylinders one by one and distributed below the second rubber head bottom plate for connecting the printing rubber head. The lifting sliding plate is also detachably connected with the sliding block. The fifth driving mechanism can drive the lifting sliding plate to reciprocate along the height direction of the lifting bottom plate. The rotary driving motor can drive the first rubber head bottom plate to rotate horizontally. The lifting cylinder can drive the rubber head connecting seat to move up and down, and the rubber head connecting seat is provided with a guide piece for guiding the lifting movement of the rubber head.

8. The pad printing apparatus of claim 1, wherein: The ink applying mechanism comprises a plurality of support columns arranged on the upper end of the cabinet, a slide table base connected on the upper end of the support column, a sixth driving mechanism arranged in the slide table base, and a plurality of ink supply mechanisms arranged on the upper end of the slide table base. The top end of the slide table base is connected with a slide table sliding plate connected with the sixth driving mechanism inside. The sixth driving mechanism can drive the slide table sliding plate to reciprocate along the length direction of the slide table base. A slide table flat plate is connected on the upper end of the slide table sliding plate. A plurality of ink supply mechanisms are detachably connected on the upper end of the slide table flat plate. The ink supply mechanism comprises a mechanism bottom plate connected with the slide table flat plate, a plurality of bars arranged on the upper end of the mechanism bottom plate and capable of forming an installation area, a printing plate mounted on the installation area, an oil cup arranged on one side of the printing plate, and a seventh driving mechanism connected with the oil cup and capable of driving the oil cup to reciprocate on the upper end of the printing plate.

9. Pad printing apparatus according to any one of claims 1 to 8, characterized in that: The tensioning mechanism comprises a support connected with the cabinet, a mounting main plate arranged on the support, and a plurality of winding mechanisms arranged on the mounting main plate and spaced apart from each other, each of the winding mechanisms comprising a winding motor mounted on a side of the mounting main plate away from the ink applying mechanism, a winding core connected with the winding motor and arranged on a side of the mounting main plate, a unwinding core arranged on the mounting main plate and located on a side of the winding core, and a support plate arranged on the mounting main plate and located between the winding core and the unwinding core, the support plate having a height higher than the winding core and the unwinding core for supporting a lower end of the ink removing adhesive tape bonding surface, and the winding motor being capable of driving the winding core to wind the used ink removing adhesive tape.

10. Pad printing apparatus according to any one of claims 1 to 8, characterized in that: The controller is further electrically connected with a fault alarm.

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