CN111086318A - Vacuum screen printer - Google Patents
Vacuum screen printer Download PDFInfo
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- CN111086318A CN111086318A CN202010067096.9A CN202010067096A CN111086318A CN 111086318 A CN111086318 A CN 111086318A CN 202010067096 A CN202010067096 A CN 202010067096A CN 111086318 A CN111086318 A CN 111086318A
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- 238000007639 printing Methods 0.000 claims abstract description 50
- 238000007650 screen-printing Methods 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 53
- 238000000926 separation method Methods 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 10
- 230000003584 silencer Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000003028 elevating effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0094—Filling or covering plated through-holes or blind plated vias, e.g. for masking or for mechanical reinforcement
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Screen Printers (AREA)
Abstract
The invention relates to a vacuum screen printing machine. The vacuum screen printing machine comprises a machine body, a vacuum system, a printing assembly and a lifting mechanism, wherein the vacuum system is used for vacuumizing the machine body, the lifting mechanism is used for driving the printing assembly to lift, a storage space is arranged at the bottom of the machine body, the vacuum system is arranged in the storage space, and the lifting mechanism is arranged at the top of the machine body. The vacuum screen printing machine has the advantage of small floor area.
Description
Technical Field
The invention relates to the field of PCB production, in particular to a vacuum screen printing machine.
Background
The circuit board has many through holes and circuits, and the main functions of these through holes and circuits are to insert fittings and conduct current. In order to protect the circuits, the traditional large hole plugging machine plays a role of protecting the circuits by plugging resin into holes of the PCB, but for high-density boards and high-requirement boards, cavities and depressions cannot be formed in the holes, and at the moment, the traditional hole plugging machine cannot meet the requirements, so that a vacuum hole plugging technology must be adopted, and the cavities and depressions can be avoided by plugging holes in a vacuum environment. The vacuum environment can be achieved only by a vacuum pump assembly, and because the vacuum pump has a large volume, all vacuum hole plugging equipment on the market is provided with the vacuum pump assembly beside an equipment host. Since many factories have limited space, the applicant further improves the existing vacuum screen printing machine in order to better adapt to the problem of limited factory space.
Disclosure of Invention
Based on this, the invention aims to provide a vacuum screen printing machine which has the advantage of small floor area.
The utility model provides a vacuum silk screen printing machine, includes organism, vacuum system, printing component, elevating system, vacuum system is used for the evacuation of organism, elevating system is used for the drive the printing component goes up and down, its characterized in that: the bottom of organism is equipped with storing space, vacuum system sets up in the storing space, elevating system sets up the top at the organism.
The vacuum screen printing machine utilizes the space in the height direction to arrange the vacuum system at the bottom of the machine body, thereby avoiding the vacuum system from being arranged beside the machine body and being beneficial to reducing the occupied area for arranging the vacuum system. And, set up elevating system at the top of organism, can vacate more storing spaces for the below of organism, need not to increase the terrain clearance of the board of vacuum silk screen printing machine.
Further, the vacuum cleaner further comprises a sliding device, and the sliding device is used for driving the vacuum system to move from the bottom of the machine body to the outside of the machine body.
Further, the sliding device comprises a first frame, the vacuum system is arranged on the first frame, and a first wheel is arranged at the bottom of the first frame; the sliding device further comprises a second rack, one part of components of the vacuum system is arranged on the first rack, the other part of components of the vacuum system is arranged on the second rack, a second wheel is arranged on the second rack, the first rack slides into the bottom of the machine body from one side of the machine body, and the second rack slides into the bottom of the machine body from the other side of the machine body; the first rack is also provided with a first adjusting foot seat, and the second rack is also provided with a second adjusting foot seat; the first wheel and the second wheel are universal wheels.
Furthermore, the machine body comprises a large vacuum chamber and a small vacuum chamber, the large vacuum chamber is communicated with the small vacuum chamber, the vacuum system is positioned under the large vacuum chamber, and the vacuum system is respectively connected with the large vacuum chamber and the small vacuum chamber; the vacuum system comprises a vacuum pump set, a vacuum degree detector, a first valve, a second valve, a third valve, a fourth valve, a first silencer and a second silencer, the vacuum pump set is connected to the large vacuum chamber through the first valve and the vacuum detector in sequence, the vacuum pump set is connected to the small vacuum chamber through the second valve, one end of the third valve is connected between the first valve and the vacuum degree detector, the other end of the third valve is connected with the first silencer, one end of the fourth valve is connected between the second valve and the small vacuum chamber, and the other end of the fourth valve is connected with the second silencer; the bottom of the machine body is provided with an outer cover, and the vacuum system is positioned in the outer cover.
Further, the lifting mechanism includes: the roller is rotatably arranged at the top of the machine body; one end of the traction piece is connected to the roller, and the other end of the traction piece is connected to the printing component; and the power source is arranged at the top of the machine body and is used for driving the roller to rotate.
Furthermore, the lifting mechanism further comprises a pulley assembly, the pulley assembly is arranged at the top of the machine body, one end of the traction piece is connected to the roller, and the other end of the traction piece is connected to the printing assembly after bypassing the pulley assembly.
Furthermore, an annular separation layer is arranged at the top of the machine body, a sealing plate is arranged at the top of the separation layer, the top surface of the machine body, the separation layer and the sealing plate form a closed space together, the closed space is communicated with a vacuum chamber of the machine body, and the roller and the traction piece are arranged in the closed space; the separation layer is formed by surrounding four partition plates, and the partition plates are fixedly connected with the machine body; a sealing piece is arranged on the contact surface between the sealing plate and the separation layer; and an output shaft of the power source penetrates through the separation layer and then is connected with the roller, and a sealing shaft sleeve is arranged between the output shaft of the power source and the separation layer.
Furthermore, a first output shaft and a second output shaft are arranged on the power source, the idler wheels comprise a first idler wheel and a second idler wheel, the pulley assembly comprises a first pulley block, a second pulley block, a third pulley block and a fourth pulley block, and the traction part comprises a first traction part, a second traction part, a third traction part and a fourth traction part; the first roller is connected with the first output shaft; the second roller is connected with the second output shaft; one end of the first pulling piece is connected to the first roller, and the other end of the first pulling piece is connected to a first corner of the printing component after bypassing the first pulley block; one end of the second pulling piece is connected to the first roller, and the other end of the second pulling piece is connected to a second corner of the printing component after bypassing the second pulley block; one end of the third pulling piece is connected to the second roller, and the other end of the third pulling piece is connected to a third angle of the printing component after bypassing the third pulley block; one end of the fourth pulling piece is connected to the second roller, and the other end of the fourth pulling piece is connected to a fourth corner of the printing component after bypassing the fourth pulley block; the power source is a double-shaft speed reducing motor; the roller can be any one of a chain wheel, a belt pulley and a winding drum; the traction piece can be any one of a chain, a belt and a steel wire rope.
Furthermore, the lifting mechanism also comprises a guide sleeve assembly and a guide rod, the guide sleeve assembly is arranged in the machine body, the guide rod is arranged on the printing assembly, the guide rod is arranged in the guide sleeve assembly in a penetrating manner, and the sliding direction of the guide rod in the guide sleeve assembly is parallel to the lifting direction of the printing assembly; the guide sleeve assembly comprises: the guide sleeve is vertically arranged on the bottom surface of the vacuum chamber of the machine body, and linear bearings are arranged in the upper end and the lower end of the guide sleeve; the limiting piece is arranged at the top end of the guide sleeve and abuts against the end face of the linear bearing at the upper end of the guide sleeve; the connecting piece is arranged at the bottom end of the guide sleeve and abuts against the end surface of the linear bearing at the lower end of the guide sleeve; the sealing sleeve is vertically arranged below the vacuum chamber, the axis of the sealing sleeve and the axis of the guide sleeve are positioned on the same straight line, the upper end of the sealing sleeve is connected to the bottom of the connecting piece, and the lower end of the sealing sleeve is a closed end; the first sealing ring is arranged at the joint between the guide sleeve and the vacuum chamber; the second sealing ring is arranged at the joint of the guide sleeve and the connecting piece; and the third sealing ring is arranged at the joint of the sealing sleeve and the connecting piece.
Furthermore, the lifting mechanism further comprises a distance measuring assembly, and the distance measuring assembly is used for detecting the rotating speed of the roller; the distance measuring assembly comprises an encoder, a synchronizing wheel and a synchronous belt, the synchronizing wheel coaxially rotates with the roller, and the encoder is connected with the synchronizing wheel through the synchronous belt.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a vacuum screen printing machine according to a first embodiment;
fig. 2 is a schematic structural diagram of a vacuum screen printing machine according to the first embodiment;
fig. 3 is a schematic structural diagram of a vacuum screen printing machine according to the first embodiment;
FIG. 4 is a schematic structural diagram of a vacuum system according to an embodiment;
FIG. 5 is a schematic structural diagram of a lifting mechanism according to the first embodiment;
FIG. 6 is a schematic view of the installation of the guide rod and guide sleeve assembly according to the first embodiment;
FIG. 7 is a schematic view of a guide sleeve assembly according to an embodiment;
FIG. 8 is a schematic view of the assembly of the glide assembly and the vacuum system according to the second embodiment;
reference numerals:
100. a body; 110. a storage space; 120. a large vacuum chamber; 130. a small vacuum chamber; 140. a housing; 150. a separation layer; 151. a closed space; 152. a partition plate; 160. a sealing plate; 170. sealing the shaft sleeve; 200. a vacuum system; 210. a vacuum pump set; 220. a vacuum degree detector; 230. a first valve; 240. a second valve; 250. a third valve; 260. a fourth valve; 270. a first muffler; 280. a second muffler; 300. a printing assembly; 310. a printing frame; 320. a horizontal movement mechanism; 330. a scraper; 400. a lifting mechanism; 410. a power source; 411. a first output shaft; 412. a second output shaft; 420. a roller; 421. a first roller; 422. a second roller; 430. a sheave assembly; 431. a first pulley block; 432. a second pulley block; 434. a third pulley block; 434. a fourth pulley block; 440. a pulling member; 441. a first pull member; 442. a second pull member; 443. a third pull member; 444. a fourth pulling member; 450. a guide sleeve assembly; 451. a guide sleeve; 452. a limiting member; 453. a linear bearing; 454. a connecting member; 455. sealing sleeves; 456. a moving channel; 457. a first seal ring; 458. a second seal ring; 459. a third seal ring; 460. a guide bar; 470. a ranging assembly; 471. an encoder; 472. a synchronizing wheel; 473. a synchronous belt; 500. a slipping device; 510. a first frame; 520. a second frame; 530. a first adjusting foot seat; 540. a second adjusting foot seat.
Detailed Description
Example one
A vacuum screen printing machine, see fig. 1 to 7, comprising a machine body 100, a vacuum system 200, a printing assembly 300, and a lifting mechanism 400. Wherein, a vacuum chamber for plugging the hole is provided on the body 100, and a storage space 110 is provided at the bottom of the body 100. The vacuum system 200 is used for vacuum-pumping of the vacuum chamber, and the vacuum system 200 is disposed in the storage space 110. A printing assembly 300 is disposed within the vacuum chamber, the printing assembly 300 being used to insert resin into the PCB board holes. The lifting mechanism 400 is disposed on the top of the machine body 100, and the lifting mechanism 400 is used for driving the printing assembly 300 to integrally lift.
Referring to fig. 1 to 7, the specific structure of the body 100 is similar to that of a conventional vacuum screen printing machine, and the body 100 includes a large vacuum chamber 120 and a small vacuum chamber 130. Wherein, the large vacuum chamber 120 is communicated with the small vacuum chamber 130, and the large vacuum chamber 120 is used for plugging the PCB. The storage space 110 is provided just below the large vacuum chamber 120, and this design makes it possible to more fully utilize the space below the machine body 100.
Referring to fig. 1 to 7, in order to reduce noise generated when the vacuum system 200 operates, a housing 140 is provided at the bottom of the machine body 100, and the vacuum system 200 is disposed in the housing 140, and in this embodiment, four connecting plates are respectively bolted to four sides of the bottom of the machine body 100, the four connecting plates and the bottom surface of the machine body 100 together form the housing 140, and the vacuum system 200 is disposed between the four connecting plates.
Referring to fig. 1 to 7, in addition, a plurality of partition layers 150 are disposed on the top surface of the machine body 100 corresponding to the position of the large vacuum chamber 120, and the partition layers 150 are ring-shaped to form a cavity with an upward opening at the top of the machine body 100. In this embodiment, the separating layer 150 is a hollow rectangular parallelepiped formed by joining four separating plates 152 end to end, and the separating plates 152 are fixed on the top surface of the machine body 100. in actual manufacturing, the separating plates 152 may be welded on the machine body 100, and the separating plates 152 may also be made integrally with the machine body 100. A sealing plate 160 is provided on the top surface of each partition layer 150, the sealing plate 160 detachably covers the top of the partition layer 150, and the top surface of the body 100, the partition layer 150, and the sealing plate 160 form an enclosed space 151 communicating only with the vacuum chamber. In order to further improve the sealing performance of the enclosed space 151, a sealing member (not shown) is disposed on a contact surface between the sealing plate 160 and the separation layer 150, and the sealing member is an existing sealing strip.
Referring to fig. 1 to 7, the vacuum system 200 is located right below the large vacuum chamber 120, the vacuum system 200 is located in the top projection range of the large vacuum chamber 120, and the vacuum system 200 is respectively communicated with the large vacuum chamber 120 and the small vacuum chamber 130. In this embodiment, the vacuum system 200 includes a vacuum pump set 210, a vacuum level gauge 220, a first valve 230, a second valve 240, a third valve 250, a fourth valve 260, a first muffler 270, and a second muffler 280. The vacuum pump unit 210 is connected to the large vacuum chamber 120 through the first valve 230 and the vacuum detector in sequence. The vacuum pump unit 210 is connected to the small vacuum chamber 130 through a second valve 240. One end of the third valve 250 is disposed between the first valve 230 and the vacuum level gauge 220, and the other end of the third valve 250 is connected to the first muffler 270. One end of the fourth valve 260 is disposed between the second valve 240 and the small vacuum chamber 130, and the other end of the fourth valve 260 is connected to the second muffler 280.
Referring to fig. 1 to 7, the printing assembly 300 includes a printing frame 310, a horizontal moving mechanism 320, and a squeegee 330. Wherein, the printing frame 310 is vertically slidably disposed in the large vacuum chamber 120 of the machine body 100. The horizontal moving mechanism 320 is installed on the printing frame 310, the horizontal moving mechanism 320 is used for driving the scraper 330 to move horizontally, the specific structure of the horizontal moving mechanism 320 is similar to the prior art, and the specific structure thereof is not discussed herein.
Referring to fig. 1 to 7, the lifting mechanism 400 includes a power source 410, a roller 420, a pulley assembly 430, a pulling member 440, a guide bar 460, and a distance measuring assembly 470. Wherein, the power source 410 is mounted on the top surface of the machine body 100 by bolts, and the power source 410 is located outside the enclosed space 151. The power source 410 is provided with a first output shaft 411 and a second output shaft 412, in this embodiment, the power source 410 is a double-shaft speed reduction motor, and the axis of the first output shaft 411 and the axis of the second output shaft 412 are located on the same straight line. The roller 420 is rotatably disposed on the top surface of the machine body 100, and the roller 420 is installed in the closed space 151, and the rotational power of the roller 420 is provided by the power source 410. The roller 420 can be any one of a sprocket, a pulley, and a spool as long as the roller 420 can wind the pulling member 440, and in this embodiment, the roller 420 is a double-row sprocket. The roller 420 includes a first roller 421 and a second roller 422, the first roller 421 is fixedly connected to an end of the first output shaft 411, and the second roller 422 is fixedly connected to an end of the second output shaft 412. Since the output shaft of the power source 410 passes through the separation layer 150 and then is connected to the roller 420, in order to further improve the sealing performance of the enclosed space 151, a sealing bushing 170 is bolted to the separation layer 150, and the output shaft of the power source 410 is inserted into the sealing bushing 170 and then is connected to the roller 420, wherein the sealing bushing 170 is a mechanical sealing bushing 170 in the prior art. The pulley assembly 430 is disposed on the top surface of the machine body 100, and the pulley assembly 430 is installed in the closed space 151. The pulley assembly 430 can be any structure that can act as a fixed pulley, such as a sprocket, a pulley, a drum, etc., and in this embodiment, the pulley assembly 430 is a sprocket. The pulley assembly 430 includes a first pulley block 431, a second pulley block 432, a third pulley block 434, and a fourth pulley block 434, wherein the first pulley block 431, the second pulley block 432, the third pulley block 434, and the fourth pulley block 434 are respectively located right above four corners of the printing frame 310. One end of the pulling member 440 is fixed on the roller 420, the other end of the pulling member 440 passes around the roller assembly 430 and is fixed on the printing frame 310, and a part of the pulling member 440 is located in the enclosed space 151 and another part of the pulling member 440 is located in the large vacuum chamber 120. The pulling member 440 may be any one of a chain, a belt, and a steel cable, and in this embodiment, the pulling member 440 is a chain. The pulling member 440 includes a first pulling member 441, a second pulling member 442, a third pulling member 443, and a fourth pulling member 444, one end of the first pulling member 441 is fixed on the first roller 421, the other end of the first pulling member 441 passes through the first pulley block 431 and then is fixed on a first corner of the printing frame 310, one end of the second pulling member 442 is fixed on the first roller 421, the other end of the second pulling member 442 passes through the second pulley block 432 and then is fixed on a second corner of the printing frame 310, one end of the third pulling member 443 is fixed on the second roller 422, the other end of the third pulling member 443 passes through the third pulley block 434 and then is fixed on a third corner of the printing frame 310, one end of the fourth pulling member 444 is fixed on the second roller 422, and the other end of the fourth pulling member 444 passes through the fourth pulley block 434 and then is fixed on a fourth corner of the printing frame 310.
Referring to fig. 1 to 7, in order to prevent the printing element 300 from shaking when moving up and down, the elevating mechanism 400 further includes a guide sleeve assembly 450 and a guide bar 460. Wherein the guide sleeve assembly 450 is disposed on the bottom surface of the large vacuum chamber 120, and the guide sleeve assembly 450 is used for limiting the moving direction of the guide bar 460. This guide bar 460 is connected through the bolt with printing frame 310, the vertical setting of guide bar 460 is in big vacuum chamber 120, the printing frame 310 mutually perpendicular of the axial of guide bar 460 and the level setting, guide bar 460 wears to establish in uide bushing subassembly 450, guide bar 460 reciprocates along uide bushing subassembly 450, ensure that printing frame 310 only has the degree of freedom that vertically reciprocates, in this embodiment, adopt four guide bars 460, four guide bars 460 are located printing frame 310 four angles respectively under.
Referring to fig. 1 to 7, in particular, the guide sleeve assembly 450 includes a guide sleeve 451, a stopper 452, a connector 454, and a sealing sleeve 455. Wherein, the guide sleeve 451 vertically penetrates the bottom surface of the large vacuum chamber 120, and the guide sleeve 451 is installed on the bottom surface of the large vacuum chamber 120 through a bolt; linear bearings 453 are installed in both upper and lower ends of the guide sleeve 451; the peripheral side surface of the lower end portion of the guide sleeve 451 is provided with external threads. The stopper 452 is attached to the upper end surface of the guide sleeve 451 by a bolt, and the linear bearing 453 located at the upper end portion of the guide sleeve 451 is restricted between the stopper 452 and the guide sleeve 451. The connecting piece 454 is sleeved at the lower end part of the guide sleeve 451, an internal thread matched with the external thread is arranged on the peripheral side surface of the connecting piece 454 contacting with the guide sleeve 451, the connecting piece 454 is installed on the lower end part of the guide sleeve 451 in a threaded connection mode, and the linear bearing 453 positioned at the lower end part of the guide sleeve 451 is limited between the connecting piece 454 and the guide sleeve 451. The sealing sleeve 455 is vertically arranged below the large vacuum chamber 120, the axis of the sealing sleeve 455 is aligned with the axis of the guide sleeve 451, the upper end of the sealing sleeve 455 is mounted on the bottom surface of the connecting member 454 by bolts, and the lower end of the sealing sleeve 455 is a closed end. The guide sleeve 451, the stopper 452, the connecting member 454 and the sealing sleeve 455 together form a moving passage 456 which is open upward and closed at the bottom, the guide rod 460 moves in the moving passage 456, and the guide rod 460 can only move vertically up and down under the limitation of the linear bearing 353 in the guide sleeve 351.
Referring to fig. 1 to 7, in order to improve the sealing performance of the guide sleeve assembly 450, a first sealing ring 457 is provided at a connection point of the guide sleeve 451 and the bottom surface of the vacuum chamber, a second sealing ring 458 is provided between the connection point of the guide sleeve 451 and the connection member 454, and a third sealing ring 459 is provided between the sealing sleeve 455 and the connection member 454.
Referring to fig. 1 to 7, in order to improve the accuracy of the lifting position of the printing frame 310, the lifting mechanism 400 further includes a distance measuring assembly 470, and the distance measuring assembly 470 is used for detecting the number of rotations of the roller 420, and the moving distance of the printing assembly 300 is obtained by the number of rotations of the roller 420 and the diameter of the roller 420. Specifically, the distance measuring assembly 470 includes an encoder 471, a synchronizing wheel 472, and a timing belt 473, wherein the encoder 471 is detachably installed on the top surface of the machine body 100, the synchronizing wheel 472 is installed on the second output shaft 412 of the power source 410, the synchronizing wheel 472 coaxially rotates with the roller 420, and the timing belt 473 is used for connecting the encoder 471 and the synchronizing wheel 472.
The working process of the lifting mechanism 400 is as follows: when the printing assembly 300 needs to be lifted, the output shaft of the dual-shaft speed reduction motor simultaneously drives the first roller 421 and the second roller 422 to rotate, the first roller 421 winds the first pulling piece 441 and the second pulling piece 442, and the second roller 422 winds the third pulling piece 443 and the fourth pulling piece 444, so that the printing frame 310 is pulled to move vertically upwards; when the printing assembly 300 needs to descend, the output shaft of the dual-shaft gear motor drives the first roller 421 and the second roller 422 to rotate at the same time, the first roller 421 emits the first pulling member 441 and the second pulling member 442, the second roller 422 emits the third pulling member 443 and the fourth pulling member 444, and the printing frame 310 moves vertically downward under the action of the gravity of the printing assembly 300.
Compared with the prior art, the vacuum screen printing machine of the embodiment has the advantages that the lifting mechanism 400 is arranged above the vacuum chamber, and the space below the large vacuum chamber 120 can be vacated for placing the vacuum system 200, so that the equipment volume is smaller, the layout occupied area is smaller, and the occupied area can be reduced by 30%. Moreover, the vacuum system 200 is placed at the bottom of the machine body 100, and then the outer cover 140 is adopted to surround the vacuum system 200, so that the sound insulation effect is achieved, and the noise generated during the operation of the equipment can be greatly reduced. In addition, the original equipment sets up elevating system 400 in its bottom, when elevating system 400 worked, need carry out sliding seal to guide bar 460, and the vacuum silk screen printing machine of this embodiment set up elevating system 400 behind the top of equipment, carry out static seal to guide bar 460, cancelled the sliding seal of guide bar 460, improve the life of sealing washer widely, reduce the probability that sealed the revealing, more be favorable to improving the gas tightness.
Example two
A vacuum screen printing machine, see fig. 8, which is different from the vacuum screen printing machine of the first embodiment in that: a sliding device 500 is further included, and the sliding device 500 is used for driving the vacuum system 200 to move from the bottom of the machine body 100 to the outside of the machine body 100, so as to facilitate maintenance of the vacuum system 200.
Specifically, the gliding apparatus 500 includes a first frame 510 and a second frame 520. The first frame 510 is a square frame, four first wheels (not shown) are arranged at the bottom of the first frame 510, and first adjusting foot seats 530 are arranged at four corners of the bottom of the first frame 510; the second frame 520 is a square frame, four second wheels (not shown) are disposed at the bottom of the second frame 520, and second adjusting foot seats 540 are disposed at four corners of the bottom of the second frame 520; the first wheel and the second wheel are conventional universal wheels, and the first adjusting foot seats 530 and the second adjusting foot seats 540 are conventional adjustable feet. In addition, a part of the components of the vacuum system 200 is placed on the first frame 510, and another part of the components of the vacuum system 200 is placed on the second frame 520, so that the first frame 510 can slide into the bottom of the machine body 100 from one side of the machine body 100, and the second frame 520 can slide into the bottom of the machine body 100 from the other side of the machine body 100. Through the design, the components of the vacuum system 200 are separately arranged on different racks, so that the vacuum screen printing machine can be suitable for more working environments.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A vacuum screen printing machine comprises a machine body (100), a vacuum system (200), a printing assembly (300) and a lifting mechanism (400), wherein the vacuum system (200) is used for vacuumizing the machine body (100), the lifting mechanism (400) is used for driving the printing assembly (300) to lift, and the vacuum screen printing machine is characterized in that: the bottom of the machine body (100) is provided with a storage space (110), the vacuum system (200) is arranged in the storage space (110), and the lifting mechanism (400) is arranged at the top of the machine body (100).
2. The vacuum screen printing machine of claim 1, wherein: the vacuum cleaner further comprises a sliding device (500), wherein the sliding device (500) is used for driving the vacuum system (200) to move from the bottom of the machine body (100) to the outside of the machine body (100).
3. The vacuum screen printing machine of claim 2, wherein:
the sliding device (500) comprises a first frame (510), the vacuum system (200) is arranged on the first frame (510), and a first wheel is arranged at the bottom of the first frame (510);
the sliding device (500) further comprises a second frame (520), one part of components of the vacuum system (200) is arranged on the first frame (510), the other part of components of the vacuum system (200) is arranged on the second frame (520), a second wheel is arranged on the second frame (520), the first frame (510) slides into the bottom of the machine body (100) from one side of the machine body (100), and the second frame (520) slides into the bottom of the machine body (100) from the other side of the machine body (100);
the first rack (510) is also provided with a first adjusting foot seat (530), and the second rack (520) is also provided with a second adjusting foot seat (540); the first wheel and the second wheel are universal wheels.
4. The vacuum screen printing machine of claim 1, wherein:
the machine body (100) comprises a large vacuum chamber (120) and a small vacuum chamber (130), the large vacuum chamber (120) is communicated with the small vacuum chamber (130), the vacuum system (200) is positioned under the large vacuum chamber (120), and the vacuum system (200) is respectively connected with the large vacuum chamber (120) and the small vacuum chamber (130);
the vacuum system (200) comprises a vacuum pump set (210), a vacuum degree detector (220), a first valve (230), a second valve (240), a third valve (250), a fourth valve (260), a first silencer (270) and a second silencer (280), wherein the vacuum pump set (210) is connected to the large vacuum chamber (120) through the first valve (230) and the vacuum detector in sequence, the vacuum pump set (210) is connected to the small vacuum chamber (130) through the second valve (240), one end of the third valve (250) is connected between the first valve (230) and the vacuum degree detector (220), the other end of the third valve (250) is connected with the first silencer (270), one end of the fourth valve (260) is connected between the second valve (240) and the small vacuum chamber (130), the other end of the fourth valve (260) is connected with the second silencer (280);
an outer cover (140) is arranged at the bottom of the machine body (100), and the vacuum system (200) is located in the outer cover (140).
5. The vacuum screen printing machine according to claim 1, wherein the lifting mechanism (400) comprises:
a roller (420) rotatably disposed at the top of the body (100);
a pull member (440) having one end connected to the roller (420) and the other end connected to the printing element (300);
a power source (410) arranged on the top of the machine body (100) and used for driving the roller (420) to rotate.
6. The vacuum screen printing machine of claim 1, wherein: the lifting mechanism (400) further comprises a pulley assembly (430), the pulley assembly (430) is arranged at the top of the machine body (100), one end of the traction piece (440) is connected to the roller (420), and the other end of the traction piece (440) is connected to the printing assembly (300) after bypassing the pulley assembly (430).
7. The vacuum screen printing machine of claim 6, wherein:
an annular separation layer (150) is arranged at the top of the machine body (100), a sealing plate (160) is arranged at the top of the separation layer (150), the top surface of the machine body (100), the separation layer (150) and the sealing plate (160) jointly form a closed space (151), the closed space (151) is communicated with a vacuum chamber of the machine body (100), and the roller (420) and the traction piece (440) are arranged in the closed space (151);
the separating layer (150) is formed by surrounding four partition plates (152), and the partition plates (152) are fixedly connected with the machine body (100); a sealing piece is arranged on the contact surface between the sealing plate (160) and the separation layer (150);
an output shaft of the power source (410) penetrates through the separating layer (150) and then is connected with the roller (420), and a sealing shaft sleeve (170) is arranged between the output shaft of the power source (410) and the separating layer (150).
8. The vacuum screen printing machine of claim 7, wherein:
a first output shaft (411) and a second output shaft (412) are arranged on the power source (410), the roller (420) comprises a first roller (421) and a second roller (422), the pulley assembly (430) comprises a first pulley block (431), a second pulley block (432), a third pulley block (434) and a fourth pulley block (434), and the pulling piece (440) comprises a first pulling piece (441), a second pulling piece (442), a third pulling piece (443) and a fourth pulling piece (444); the first roller (421) is connected with the first output shaft (411); the second roller (422) is connected with the second output shaft (412); one end of the first pulling piece (441) is connected to the first roller (421), and the other end of the first pulling piece (441) is connected to a first corner of the printing assembly (300) after bypassing the first pulley block (431); one end of the second pulling piece (442) is connected to the first roller (421), and the other end of the second pulling piece (442) is connected to a second corner of the printing component (300) after bypassing the second pulley block (432); one end of the third pulling piece (443) is connected to the second roller (422), and the other end of the third pulling piece (443) is connected to a third corner of the printing assembly (300) after bypassing the third pulley block (434); one end of the fourth pulling piece (444) is connected to the second roller (422), and the other end of the fourth pulling piece (444) is connected to a fourth corner of the printing assembly (300) after bypassing the fourth pulley block (434);
the power source (410) is a double-shaft speed reducing motor;
the roller (420) can be any one of a chain wheel, a belt pulley and a winding drum;
the pulling piece (440) can be any one of a chain, a belt and a steel wire rope.
9. The vacuum screen printing machine of claim 5,
the lifting mechanism (400) further comprises a guide sleeve assembly (450) and a guide rod (460), the guide sleeve assembly (450) is arranged in the machine body (100), the guide rod (460) is arranged on the printing assembly (300), the guide rod (460) penetrates through the guide sleeve assembly (450), and the sliding direction of the guide rod (460) in the guide sleeve assembly (450) is parallel to the lifting direction of the printing assembly (300);
the guide sleeve assembly (450) includes:
a guide sleeve (451) vertically arranged on the bottom surface of the vacuum chamber of the machine body (100), and linear bearings (453) are arranged in the upper end and the lower end of the guide sleeve;
a stopper (452) provided at the tip of the guide sleeve (451) and abutting against the end surface of the linear bearing (453) positioned at the upper end of the guide sleeve (451);
a connecting piece (454) which is arranged at the bottom end of the guide sleeve (451) and is abutted against the end surface of the linear bearing (453) positioned at the lower end of the guide sleeve (451);
the sealing sleeve (455) is vertically arranged below the vacuum chamber, the axis of the sealing sleeve and the axis of the guide sleeve (451) are positioned on the same straight line, the upper end of the sealing sleeve is connected to the bottom of the connecting piece (454), and the lower end of the sealing sleeve is a closed end;
a first sealing ring (457) provided at a connection between the guide sleeve (451) and the vacuum chamber;
a second seal ring (458) provided at a connection point of the guide sleeve (451) and the connection member (454);
and a third sealing ring (459) arranged at the connection position of the sealing sleeve (455) and the connecting piece (454).
10. The vacuum screen printing machine of claim 5, wherein:
the lifting mechanism (400) further comprises a distance measuring assembly (470), wherein the distance measuring assembly (470) is used for detecting the rotating speed of the roller (420);
the distance measuring assembly (470) comprises an encoder (471), a synchronous wheel (472) and a synchronous belt (473), wherein the synchronous wheel (472) rotates coaxially with the roller (420), and the encoder (471) is connected with the synchronous wheel (472) through the synchronous belt (473).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010067096.9A CN111086318A (en) | 2020-01-20 | 2020-01-20 | Vacuum screen printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010067096.9A CN111086318A (en) | 2020-01-20 | 2020-01-20 | Vacuum screen printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111086318A true CN111086318A (en) | 2020-05-01 |
Family
ID=70399722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010067096.9A Pending CN111086318A (en) | 2020-01-20 | 2020-01-20 | Vacuum screen printer |
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| Country | Link |
|---|---|
| CN (1) | CN111086318A (en) |
Cited By (1)
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