CN210807834U

CN210807834U - Welding material printing device is used in production of PCBA board

Info

Publication number: CN210807834U
Application number: CN201920740410.8U
Authority: CN
Inventors: 马昌焱
Original assignee: Shenzhen Hengchangyuan Electronic Co ltd
Current assignee: Shenzhen Hengchangyuan Electronic Co ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-06-19
Anticipated expiration: 2029-05-22

Abstract

The utility model relates to the technical field of solder printing auxiliary devices, in particular to a solder printing device for producing PCBA boards, which saves labor in a scraping mode of a scraper blade, thereby improving the practicability and reducing the use limitation; comprises a bottom plate and a scraper; including arch crossbeam and two sets of curb plates, still include the slide bar, slider and spliced pole, still include first motor and driven screw post, arch crossbeam left side and right side transversely all are provided with the rotation and lead to the groove, and it all can rotate to be fixed with first ball group to lead to the inslot portion at two sets of rotations, the fixed cover in driven screw post right side is equipped with the position circle, still include the cushion collar, multiunit buffer spring and multiunit buffer board, be provided with the cushion chamber in the cushion collar, be provided with the ventilation hole group on the cushion collar lateral wall, still include two sets of link, still include cover spring and flexible pipe, cover spring top and spliced pole bottom are connected, cover spring bottom and scraper blade are connected, flexible pipe top and spliced pole bottom are connected, flexible pipe bottom and scraper blade are.

Description

Welding material printing device is used in production of PCBA board

Technical Field

The utility model relates to a solder printing auxiliary device's technical field especially relates to a solder printing device is used in production of PCBA board.

Background

As is well known, a solder printing device for producing a PCBA board is an accessory device which is used in the production process of the PCBA board to perform solder printing on the surface of a semi-finished product so as to better perform subsequent operations, and is widely used in the field of solder printing; the existing solder printing device for producing the PCBA comprises a bottom plate and a scraper, wherein the scraper is placed on the bottom plate; when the existing solder printing device for PCBA production is used, a semi-finished product is placed at the top end of a bottom plate, hollows with different shapes are arranged on the semi-finished product according to different use requirements, solder is guided to the hollow parts, and the solder is manually scraped by a scraper; present PCBA for board production solder printing device discovery in using, its scraper blade strickles the mode comparatively hard to lead to its practicality relatively poor, use the limitation higher.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a mode is strickleed off to its scraper blade is comparatively laborsaving to improve its practicality, reduce the solder printing device for PCBA board production that uses the limitation.

The utility model relates to a solder printing device for PCBA board production, which comprises a bottom plate and a scraper blade; the novel steel plate spring comprises an arched crossbeam and two groups of side plates, wherein the top ends of the two groups of side plates are respectively connected with the left side and the right side of the bottom end of the arched crossbeam, the bottom ends of the two groups of side plates are respectively arranged at the top end of a bottom plate, the novel steel plate spring also comprises a slide rod, a slide block and a connecting column, the left end and the right end of the slide rod are respectively arranged at the left side wall and the right side wall of the arched crossbeam, the connecting column is arranged at the bottom end of the slide block, the slide block and the connecting column can be sleeved on the slide rod in a sliding way, the novel steel plate spring also comprises a first motor and a driven threaded column, the slide block is sleeved outside the driven threaded column in a threaded way, the left side and the right side of the arched crossbeam are transversely provided with rotating through grooves, first ball groups can be rotatably fixed inside the two groups of rotating through grooves, the buffer device also comprises a sleeve spring and a telescopic tube, wherein the top end of the sleeve spring is connected with the bottom end of the connecting column, the bottom end of the sleeve spring is connected with the scraper blade, the bottom end of the telescopic tube is connected with the scraper blade, the sleeve spring is sleeved outside the telescopic pipe.

The utility model discloses a welding material printing device is used in production of PCBA board still includes the slide, places board, base, second motor, transmission shaft, drive shaft and drives the piece, and the pedestal mounting is on the slide top, and the second motor is installed on the base top, and transmission shaft one end fixed connection is at second motor front side output, the transmission shaft other end with drive a one end rotatable coupling, drive the axle other end and drive a rotatable coupling, drive the piece and install and place board bottom middle part.

The utility model discloses a welding material printing device is used in production of PCBA board still includes two sets of bradyseism boards, two sets of bradyseism springs and two sets of bradyseism pieces, and two sets of bradyseism board bottom are connected with slide top left side and right side respectively, and two sets of bradyseism spring one end are connected with two sets of bradyseism inboard respectively, and two sets of bradyseism spring other ends are connected with two sets of bradyseism pieces respectively, and the second motor clamps between two sets of bradyseism pieces.

The utility model discloses a welding material printing device is used in production of PCBA board places the board preceding lateral wall left and right sides and places the board rear side wall left and right sides and all is provided with the fixed block to vertically all be provided with the sliding hole on four group's fixed blocks, the equal rotatable second ball group that is fixed with of the downthehole lateral wall of four group's sliding, still include four group's supports, four group's supports top is passed four group's second ball group respectively and is stretched out to four group's sliding hole tops respectively, four group's supports bottom is installed respectively in slide top left front side, right front side, left rear side and right rear side.

The utility model discloses a welding material printing device is used in production of PCBA board still includes four group's fixed columns, four group's depression bars, four group's lead screws and four group's briquetting, and four group's depression bar bottoms are installed respectively on four group's fixed column tops ends, and four group's lead screws's bottom is the spiral shell dress respectively and is passed four group's depression bar top lateral walls and the spiral shell wears out four group's depression bar below respectively and is connected with four group's briquetting, and four group's lead screws.

The utility model discloses a solder printing device is used in production of PCBA board still includes four locking plates of group and four locking spring of group, and four locking spring tops of group are connected with four briquetting bottoms of group respectively, and four locking spring bottoms of group are connected with four locking plates of group respectively.

The utility model discloses a welding material printing device is used in production of PCBA board places board top left front side, right front side, left rear side and right rear side and all is provided with the standing groove to all rotatable be fixed with ball bearing inside four standing grooves of group, the bottom of four fixed columns of group is rotatable plug-in card respectively inside four ball bearing of group.

The utility model discloses a welding material printing device is used in production of PCBA board is to being provided with slide group before the bottom plate top, and the slide bottom is provided with the slide group, and the slide group slidable is fixed in slide group department, and the slide front side is connected with the handle.

Compared with the prior art, the beneficial effects of the utility model are that: the motor can drive the driven threaded column to rotate through the motor, the design of matching with the screw installation of the sliding block is transversely restricted by the sliding rod, so that the sliding block slides left and right on the sliding rod, the driving scraper can conveniently move transversely, the scraping mode of the scraper is labor-saving, the practicability of the scraper is improved, the use limitation is reduced, the driven threaded column can rotate more smoothly through the first ball group, the positioning ring assists in transverse limiting, the motor is a common electric device in the market, the motor can be used after being bought back for use only by being electrically connected according to the instruction book bought back together, therefore, the repeated description is omitted, the shaking generated when the motor works can be buffered through a plurality of groups of buffer springs, the damage of the motor and the inserted column is reduced, the service life of the motor is prolonged, the stability of the motor is improved through two groups of connecting frames, the ball group assists in rotating the inserted column to rotate more, when the scraper works, the semi-finished product is convenient to be attached all the time, the use reliability is improved, and the telescopic pipe auxiliary sleeve spring is not easy to distort.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the connection of the first motor and the cushion collar;

FIG. 3 is an enlarged partial view of portion A of FIG. 1;

FIG. 4 is an enlarged view of part B of FIG. 1;

in the drawings, the reference numbers: 1. a base plate; 2. a squeegee; 3. an arched beam; 4. a side plate; 5. a slide bar; 6. a slider; 7. connecting columns; 8. a first motor; 9. a driven threaded post; 10. positioning rings; 11. a buffer sleeve; 12. a buffer plate; 13. a group of ventilation holes; 14. a connecting frame; 15. a spring sleeve; 16. a slide plate; 17. placing the plate; 18. a base; 19. a second motor; 20. a drive shaft; 21. driving a shaft; 22. driving the block; 23. a cushioning plate; 24. a shock absorption block; 25. a fixed block; 26. a support; 27. fixing a column; 28. a pressure lever; 29. a lead screw; 30. briquetting; 31. a limiting rotary block; 32. a locking plate; 33. and a sliding column group.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the solder printing device for producing the PCBA plate of the present invention comprises a bottom plate 1 and a scraper 2; the novel high-speed automatic feeding device is characterized by comprising an arched crossbeam 3 and two groups of side plates 4, wherein the top ends of the two groups of side plates 4 are respectively connected with the left side and the right side of the bottom end of the arched crossbeam 3, the bottom ends of the two groups of side plates 4 are respectively arranged at the top end of a bottom plate 1, the novel high-speed automatic feeding device also comprises a slide rod 5, a slide block 6 and a connecting column 7, the left end and the right end of the slide rod 5 are respectively arranged at the left side wall and the right side wall in the arched crossbeam 3, the connecting column 7 is arranged at the bottom end of the slide block 6, the slide block 6 and the connecting column 7 can be sleeved on the slide rod 5 in a sliding manner, the novel high-speed automatic feeding device also comprises a first motor 8 and a driven threaded column 9, the slide block 6 is sleeved outside the driven threaded column 9 in a screwing manner, the left side and the right side of the arched, the right side of a driven threaded column 9 is fixedly sleeved with a positioning ring 10, the positioning ring 10 is in contact with the right side wall of an arched beam 3, the device further comprises a buffer sleeve 11, a plurality of groups of buffer springs and a plurality of groups of buffer plates 12, the buffer sleeve 11 is installed on the left side of the arched beam 3, a buffer cavity is arranged in the buffer sleeve 11, a ventilation hole group 13 is arranged on the side wall of the buffer sleeve 11, one end of each group of buffer springs is connected with the inner side wall of the buffer cavity, the other end of each group of buffer springs is connected with the corresponding group of buffer plates 12, a first motor 8 is clamped between the corresponding groups of buffer plates 12, the right end of the driven threaded column 9 penetrates through the inner right side wall of the buffer sleeve 11 and extends out of the buffer sleeve 11, the two groups of connecting frames 14 are further included, one end of each group of connecting frames 14 penetrates through the top side wall and the bottom side wall of, the telescopic pipe is characterized by further comprising a sleeve spring 15 and a telescopic pipe, wherein the top end of the sleeve spring 15 is connected with the bottom end of the connecting column 7, the bottom end of the sleeve spring 15 is connected with the scraper 2, the top end of the telescopic pipe is connected with the bottom end of the connecting column 7, the bottom end of the telescopic pipe is connected with the scraper 2, and the sleeve spring 15 is sleeved outside the telescopic pipe; the motor can drive the driven threaded column to rotate through the motor, the design of matching with the screw installation of the sliding block is transversely restricted by the sliding rod, so that the sliding block slides left and right on the sliding rod, the driving scraper can conveniently move transversely, the scraping mode of the scraper is labor-saving, the practicability of the scraper is improved, the use limitation is reduced, the driven threaded column can rotate more smoothly through the first ball group, the positioning ring assists in transverse limiting, the motor is a common electric device in the market, the motor can be used after being bought back for use only by being electrically connected according to the instruction book bought back together, therefore, the repeated description is omitted, the shaking generated when the motor works can be buffered through a plurality of groups of buffer springs, the damage of the motor and the inserted column is reduced, the service life of the motor is prolonged, the stability of the motor is improved through two groups of connecting frames, the ball group assists in rotating the inserted column to rotate more, when the scraper works, the semi-finished product is convenient to be attached all the time, the use reliability is improved, and the telescopic pipe auxiliary sleeve spring is not easy to distort.

The utility model discloses a welding material printing device is used in PCBA board production still includes slide 16, places board 17, base 18, second motor 19, transmission shaft 20, drive shaft 21 and drive piece 22, base 18 installs on slide 16 top, second motor 19 installs on base 18 top, 20 one end fixed connections of transmission shaft are at the output of second motor 19 front side, the other end of transmission shaft 20 and drive shaft 21 one end rotatable coupling, drive shaft 21 other end and drive piece 22 rotatable coupling, drive piece 22 installs in the middle part of placing board 17 bottom; it can drive the transmission shaft through the second motor and rotate, makes the transmission shaft pull the epaxial drive piece of drive and carries out longitudinal movement, thereby the board can be carried out longitudinal movement to the messenger places, and semi-manufactured goods are placed the height and can be conveniently adjusted according to semi-manufactured goods self size, improves its adaptability, reduces and uses the limitation, and the second motor is the common electrical part in market, only need to be connected according to the instruction manual electricity of buying back when using together and can use, so no longer describe here.

The utility model discloses a welding material printing device is used in production of PCBA board, still include two sets of bradyseism boards 23, two sets of bradyseism springs and two sets of bradyseism pieces 24, two sets of bradyseism boards 23 bottom are connected with 16 top left sides and right sides of slide respectively, two sets of bradyseism spring one end is connected with two sets of bradyseism boards 23 inboard respectively, two sets of bradyseism spring other ends are connected with two sets of bradyseism pieces 24 respectively, second motor 19 clamps between two sets of bradyseism pieces 24; it can drive two sets of bradyseism pieces through two sets of bradyseism springs and rock the work of second motor and extrude the bradyseism, improves the practicality.

The utility model discloses a solder printing device is used in PCBA board production, place board 17 front side wall left and right sides and place board 17 back side wall left and right sides and all be provided with fixed block 25, and vertically all be provided with the sliding hole on four group's fixed blocks 25, the lateral wall all can rotate and be fixed with second ball group in four group's sliding hole, still include four group's supports 26, the top of four group's support 26 passes four group's second ball group respectively and stretches out to four group's sliding hole tops respectively, the bottom of four group's support 26 is installed respectively at slide 16 top left front side, right front side, left rear side and right rear side; it can slide through support cooperation sliding hole and conveniently carry on spacingly to placing the board, makes things convenient for its longitudinal movement only, improves and supports the reliability, and the auxiliary stand of second ball group slides more in the same direction as smooth.

The utility model discloses a solder printing device is used in PCBA board production still includes four group's fixed column 27, four group's depression bars 28, four group's lead screw 29 and four group's briquetting 30, and four group's depression bar 28 bottoms are installed respectively at four group's fixed column 27 tops, and four group's lead screw 29 bottoms are the spiral shell respectively and are passed four group's depression bar 28 top lateral walls and respectively the spiral shell wear out four group's depression bar 28 below and be connected with four group's briquetting 30, and four group's lead screw 29 tops all are provided with spacing; it can carry out longitudinal movement through four group's of manual rotatory lead screws drive four group's briquetting, makes it suppress fixedly to semi-manufactured goods, improves its practicality, and it is spacing to the lead screw through four group's spacing rotary blocks, makes it be difficult for unscrewing and drops and make things convenient for the hand to revolve.

The utility model discloses a solder printing device for PCBA board production, which also comprises four groups of locking plates 32 and four groups of locking springs, wherein the top ends of the four groups of locking springs are respectively connected with the bottom ends of four groups of pressing blocks 30, and the bottom ends of the four groups of locking springs are respectively connected with the four groups of locking plates 32; it can strengthen the fixed effect of semi-manufactured goods through locking spring extrusion locking board.

The utility model discloses a solder printing device for PCBA board production, the left front side, right front side, left rear side and right rear side of the top end of the placing plate 17 are all provided with placing grooves, and ball bearings can be rotatably fixed in the four groups of placing grooves, and the bottom ends of the four groups of fixed columns 27 can be respectively rotatably inserted in the four groups of ball bearings; it can make things convenient for the locking plate to rotate through ball bearing, further makes things convenient for semi-manufactured goods dismouting.

The utility model discloses a solder printing device for PCBA board production, the front and back of the top end of the bottom plate 1 is provided with a slide way group, the bottom end of the slide plate 16 is provided with a slide column group 33, the slide column group 33 can be fixed at the slide way group in a sliding way, and the front side of the slide plate 16 is connected with a handle; it can make it conveniently drive and place the semi-manufactured goods on the board and carry out the front and back to removing through manual pulling handle, increases the scope of scraping, improves adaptability, is provided with common locking mechanism between slide group and the slide group, makes things convenient for the slide group to fix.

The utility model discloses a welding material printing device is used in production of PCBA board, it is at work, can drive driven screw post through the motor and rotate, the design of cooperation slider spiral shell dress is restricted by the slide bar transversely again, and then make the slider slide left and right on the slide bar, it can conveniently carry out lateral shifting to drive the scraper blade, the scraper blade strickles off the way and is comparatively laborsaving, thereby improve its practicality, reduce the use limitation, can make driven screw post rotate more smooth through first ball group, and the lateral spacing is assisted to the position circle, the motor is the common electrical part in the market, only need to be connected according to the instruction book electricity that purchases to return together when buying back to use and can use, therefore no longer describe here, can cushion the rocking that the motor takes place when working through multiunit buffer spring, thereby slow down the damage of motor and insert the post, prolong its life, improve motor stability through two sets of link span, the auxiliary insertion column of the ball group rotates more smoothly, and meanwhile, the sleeve spring extrudes the scraper to press downwards, so that the scraper can be conveniently and tightly attached to a semi-finished product all the time when working, the use reliability is improved, and the auxiliary sleeve spring of the telescopic pipe is not easy to distort and deform; the transmission shaft can be driven to rotate through the second motor, so that the transmission shaft can pull the driving block on the driving shaft to longitudinally move, the placing plate can longitudinally move, the placing height of a semi-finished product can be conveniently adjusted according to the size of the semi-finished product, the adaptability of the semi-finished product is improved, the use limitation is reduced, the second motor is a common electric device in the market, and the semi-finished product can be used only by being electrically connected according to a purchased instruction book when being bought for use, so that the detailed description is omitted; two groups of cushioning springs can drive two groups of cushioning blocks to extrude and cushion the working shake of the second motor, so that the practicability is improved; the placing plate can be limited conveniently by matching the support with the sliding hole to slide, so that the placing plate can only move longitudinally conveniently, the supporting reliability is improved, and the second ball group assists the support to slide more smoothly; the four groups of screw rods can be manually rotated to drive the four groups of pressing blocks to longitudinally move, so that semi-finished products are pressed and fixed, the practicability of the semi-finished products is improved, and the screw rods are limited by the four groups of limiting rotary blocks, so that the screw rods are not easy to unscrew and fall off and are convenient to manually rotate; the locking plate can be extruded by the locking spring to enhance the fixing effect of the semi-finished product; the locking plate can be conveniently rotated through the ball bearing, and the semi-finished product is further conveniently disassembled and assembled; can make it conveniently drive and place semi-manufactured goods on the board and carry out the forward-backward to removing through manual pulling handle, increase the range of scraping, improve adaptability, be provided with common locking mechanism between slide group and the slide group, make things convenient for the slide group to fix.

The utility model discloses a solder printing device is used in PCBA board production, above the mounting means of all parts, connected mode or set up the mode and be the welding, riveting or other common mechanical mode, wherein slidable/rotate fixedly promptly for slide/rotate the state under not dropping, sealed intercommunication is sealed when two connecting pieces communicate promptly, and the concrete structure of its all parts, model and coefficient index are its from taking the technique, as long as can reach all can implementing of its beneficial effect, above-mentioned all with electric module and with electric appliance be the common electrical part in market, buy when returning to the use only need connect according to the mutual electricity of the instruction manual that together buy back and can use, and control module is its common from taking the module, the event is no longer repeated here.

The solder printing device for producing the PCBA board of the utility model has the advantages that under the condition that the opposite explanation is not made, the directional terms "up, down, left, right, front, back, inside, and outside, and vertical and horizontal" included in the term merely represent the orientation of the term in the normal use state, or be a trivial term understood by those skilled in the art, and should not be considered as limiting the term, at the same time, the numerical terms "first," "second," and "third," etc. do not denote any particular quantity or order, but rather are used to distinguish one from another, furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A solder printing device for producing PCBA boards comprises a bottom plate (1) and a scraper (2); its characterized in that, including arch crossbeam (3) and two sets of curb plate (4), the top of two sets of curb plate (4) is connected with arch crossbeam (3) bottom left side and right side respectively, the bottom of two sets of curb plate (4) is all installed on bottom plate (1) top, still include slide bar (5), slider (6) and spliced pole (7), both ends are installed respectively in arch crossbeam (3) left and right sides wall about slide bar (5), spliced pole (7) are installed in slider (6) bottom, slider (6) and spliced pole (7) all can slip the cover and establish on slide bar (5), still include first motor (8) and driven screw thread post (9), slider (6) spiral shell dress cover is established in driven screw thread post (9) outside, arch crossbeam (3) left side and right side transversely all are provided with and rotate logical groove, and all can rotate and be fixed with first ball group in logical inslot portion at two sets of rotation, both ends pass first ball group and all stretch out to arch crossbeam about driven screw thread post (9) respectively 3) The outer side, the left end of the driven threaded column (9) is connected with the output end of the right side of the first motor (8), the right side of the driven threaded column (9) is fixedly sleeved with a positioning ring (10), the positioning ring (10) is in contact with the right side wall of the arched cross beam (3), the electric motor further comprises a buffer sleeve (11), a plurality of groups of buffer springs and a plurality of groups of buffer plates (12), the buffer sleeve (11) is installed on the left side of the arched cross beam (3), a buffer cavity is arranged in the buffer sleeve (11), a vent hole group (13) is arranged on the side wall of the buffer sleeve (11), one end of each group of buffer spring is connected with the inner side wall of the buffer cavity, the other end of each group of buffer spring is respectively connected with the plurality of groups of buffer plates (12), the first motor (8) is clamped among the plurality of groups of buffer plates (12), the right end of the driven threaded column (9) penetrates through the, one end of two sets of link (14) passes cushion collar (11) top lateral wall and end lateral wall respectively and all stretches into to inside being connected with first motor (8) of cushion collar (11), two sets of link (14) other ends all are connected with arch crossbeam (3) left side, still include cover spring (15) and flexible pipe, cover spring (15) top and spliced pole (7) bottom are connected, cover spring (15) bottom and scraper blade (2) are connected, flexible pipe top and spliced pole (7) bottom are connected, flexible pipe bottom and scraper blade (2) are connected, cover spring (15) suit is in the flexible outside of pipe.

2. A solder printing device for PCBA production as recited in claim 1, further comprising a sliding plate (16), a placing plate (17), a base (18), a second motor (19), a transmission shaft (20), a driving shaft (21) and a driving block (22), wherein the base (18) is installed at the top end of the sliding plate (16), the second motor (19) is installed at the top end of the base (18), one end of the transmission shaft (20) is fixedly connected to the front side output end of the second motor (19), the other end of the transmission shaft (20) is rotatably connected with one end of the driving shaft (21), the other end of the driving shaft (21) is rotatably connected with the driving block (22), and the driving block (22) is installed at the middle part of the bottom end of the placing plate (17).

3. The solder printing device for PCBA production as recited in claim 2, further comprising two sets of shock absorbing plates (23), two sets of shock absorbing springs and two sets of shock absorbing blocks (24), wherein the bottom ends of the two sets of shock absorbing plates (23) are respectively connected with the left side and the right side of the top end of the sliding plate (16), one ends of the two sets of shock absorbing springs are respectively connected with the inner sides of the two sets of shock absorbing plates (23), the other ends of the two sets of shock absorbing springs are respectively connected with the two sets of shock absorbing blocks (24), and the second motor (19) is clamped between the two sets of shock absorbing blocks (24).

4. A solder printing apparatus for PCBA production as claimed in claim 3, wherein the mounting plate (17) is provided with fixing blocks (25) on both the left and right sides of the front side wall and the mounting plate (17) is provided with fixing blocks on both the left and right sides of the rear side wall, and four sets of fixing blocks (25) are provided with sliding holes in the longitudinal direction, and the four sets of sliding holes are provided with second ball sets rotatably fixed to the inner side walls, and further comprising four sets of brackets (26), wherein the top ends of the four sets of brackets (26) respectively pass through the four sets of second ball sets and respectively protrude above the four sets of sliding holes, and the bottom ends of the four sets of brackets (26) are respectively mounted on the left front side, the right front side, the left rear side and the right rear side of.

5. The solder printing device for PCBA production as recited in claim 4, further comprising four sets of fixing posts (27), four sets of pressing posts (28), four sets of lead screws (29), and four sets of pressing blocks (30), wherein the bottom ends of the four sets of pressing posts (28) are respectively mounted at the top ends of the four sets of fixing posts (27), the bottom ends of the four sets of lead screws (29) are respectively screwed through the top side walls of the four sets of pressing posts (28) and respectively screwed out of the lower parts of the four sets of pressing posts (28) to be connected with the four sets of pressing blocks (30), and the top ends of the four sets of lead screws (29) are respectively provided with a limiting rotary.

6. A solder printing apparatus for PCBA production as claimed in claim 5, further comprising four sets of locking plates (32) and four sets of locking springs, the top ends of the four sets of locking springs being connected to the bottom ends of the four sets of pressing blocks (30), respectively, and the bottom ends of the four sets of locking springs being connected to the four sets of locking plates (32), respectively.

7. A solder printing apparatus for PCBA production as claimed in claim 6, wherein the top left front side, right front side, left rear side and right rear side of the placing plate (17) are provided with placing grooves, and ball bearings are rotatably fixed in the four placing grooves, and the bottom ends of the four fixing posts (27) are rotatably inserted in the four ball bearings respectively.

8. A solder printing device for PCBA production as claimed in claim 7, wherein the top end of the bottom plate (1) is provided with a slide way group in the front-back direction, the bottom end of the slide plate (16) is provided with a slide column group (33), the slide column group (33) is slidably fixed at the slide way group, and the front side of the slide plate (16) is connected with a handle.