CN111137001A

CN111137001A - Silk screen tightening device convenient to adjust

Info

Publication number: CN111137001A
Application number: CN201911298167.XA
Authority: CN
Inventors: 刘晨阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-05-12

Abstract

The invention relates to the technical field of screen printing machines, and discloses a screen tightening device convenient to adjust, which comprises an installation platform: the mounting platform is fixedly connected with a plurality of groups of clamping devices in an annular array manner, and each group of clamping devices comprises a plurality of clamping devices which are uniformly and equidistantly fixedly connected on the mounting platform; clamping device includes mounting panel, driving motor, fixed frame, dwang, first screw rod, screw hole, movable plate, connecting plate and positioner, mounting panel fixed connection is on mounting platform, driving motor fixed connection is in the one end of mounting panel, the other end of fixed frame fixed connection on the mounting panel, dwang fixed connection is on driving motor's output, the one end that driving motor was kept away from to the dwang passes fixed frame and inwards extends to fixed frame. This silk screen tightening device convenient to adjustment can be convenient for press from both sides the silk screen tight, and the silk screen is located the top that has the work piece, can not push up the work piece during printing for the printing effect of product is better.

Description

Silk screen tightening device convenient to adjust

Technical Field

The invention relates to the technical field of screen printing machines, in particular to a screen tensioning device convenient to adjust.

Background

The screen printer is a device for printing soldering paste or surface mount adhesive on a PCB bonding pad through a screen, and can be divided into a vertical screen printer, a slant-arm screen printer, a rotary screen printer, a four-column screen printer and a full-automatic screen printer, and is mainly applied to the electronic processing industry, the screen printing marks of printed circuit boards, the marks of instrument shell panels, the soldering paste printing in the circuit board processing process and the like. The screen is secured to the frame before use, after tightening, before it can be used in the screen machine.

The patent of No. CN107650494A discloses a silk screen device of tightening that can adjust, including supporting platform, the supporting platform top is fixed with one row of chucking device respectively in four directions, chucking device includes sliding base and slip table, the slip table rear is equipped with the cylinder, the middle part top of slip table articulates there is a depression bar, set up a spout that runs through the depression bar on the depression bar, be provided with one in the spout with spout clearance fit's adjusting screw, spout and adjusting screw mutually perpendicular, adjusting screw is provided with an adjusting nut respectively in the both sides of depression bar, adjusting screw's outer end is fixed with the jack catch, the front portion of slip table be fixed with one with last jack catch assorted lower jack catch, the middle part below of slip table articulates there is a actuating lever, the middle part of actuating lever is articulated with a connecting rod respectively with the middle part of depression bar. Above-mentioned scheme can carry out the quick clamp to the silk screen, then tightens the operation to can adjust the chucking position of individuality chucking device to the silk screen after tightening, improve the tight effect of tightening of silk screen, but still have following shortcoming: when carrying out the silk screen printing man-hour, the mechanism of some connections of the device is for example the part such as slip table, actuating lever, adjusting screw and adjusting nut all in the top of silk screen, pushes up the work piece of processing easily when the silk screen printing man-hour, and then leads to the printing to have the flaw, reduces the quality of product.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the screen tensioning device convenient to adjust, which has the advantages that the screen is convenient to clamp, the screen is positioned above all workpieces, the workpieces cannot be jacked during printing, the printing effect of a product is better, and the like, and the problems that some connected mechanisms in the prior device, such as a sliding table, a driving rod, an adjusting screw rod, an adjusting nut and other parts, are all arranged above the screen, and the processed workpieces are easy to jack during screen printing processing, so that the printing defects are caused, and the quality of the product is reduced are solved.

(II) technical scheme

In order to realize the purposes that the silk screen is convenient to clamp, is positioned above all the workpieces and cannot jack the workpieces during printing, and the printing effect of a product is better, the invention provides the following technical scheme: a silk screen tightening device convenient to adjust comprises an installation platform, wherein a plurality of groups of clamping devices are fixedly connected to the installation platform in an annular array manner, and each group of clamping devices comprises a plurality of clamping devices which are uniformly and equidistantly fixedly connected to the installation platform;

the clamping device comprises a mounting plate, a driving motor, a fixing frame, a rotating rod, a first screw rod, a threaded hole, a movable plate, a connecting plate and a positioning device, wherein the mounting plate is fixedly connected on a mounting platform, the driving motor is fixedly connected at one end of the mounting plate, the fixing frame is fixedly connected at the other end of the mounting plate, the rotating rod is fixedly connected at the output end of the driving motor, one end of the rotating rod, which is far away from the driving motor, penetrates through the fixing frame and extends inwards the fixing frame, the first screw rod is fixedly sleeved on the rod wall of the rotating rod, which is positioned in the fixing frame, the movable plate is slidably connected in the fixing frame, the threaded hole is arranged at the position, which corresponds to the first screw rod, of the movable plate, the first screw rod penetrates through the, two the common fixed connection of one end of connecting plate keeping away from the movable plate is on positioner's corresponding position, positioner is located fixed frame.

Preferably, positioner includes locating rack, second screw rod, thread bush and splint, the locating rack is "U" type setting, two the common fixed connection of one end that the movable plate was kept away from to the connecting plate is on the lateral wall of locating rack, the fixed intercommunication of thread bush is on the lateral wall that is close to movable plate one side of locating rack, the second screw rod passes the thread bush setting, and rather than threaded connection, splint sliding connection is in the locating rack, the one end that the second screw rod is close to splint is passed through the bearing and is connected with rotating between the splint.

Preferably, the mounting panel corresponds the position of locating rack and has seted up the spacing groove, sliding connection has the stopper in the spacing groove, the one end that the spacing groove tank bottom was kept away from to the stopper passes the spacing groove and outwards extends, and fixed connection is on the corresponding position of locating rack bottom.

Preferably, a ball groove is formed in one end, close to the bottom of the limiting groove, of the limiting block, the ball is connected in the ball groove in a rolling mode, and one end, far away from the bottom of the ball groove, of the ball penetrates through a groove opening of the ball groove and extends outwards and is connected with the bottom of the limiting groove in a rolling mode.

Preferably, one end of the second screw rod, which is far away from the clamping plate, is fixedly connected with a rotating handle.

Preferably, the position close to the bottom in the positioning frame is fixedly connected to the sliding rod, and the sliding rod penetrates through the clamping plate and is in sliding connection with the clamping plate.

Preferably, the outer surfaces of the mounting platform and the mounting plate are coated with anticorrosive coatings.

(III) advantageous effects

Compared with the prior art, the invention provides the screen tightening device convenient to adjust, and the screen tightening device has the following beneficial effects:

1. the silk screen tightening device convenient to adjust comprises an installation platform, a clamping device, an installation plate, a driving motor, a fixing frame, a rotating rod, a first screw rod, a moving plate, connecting plates and a positioning device, when a silk screen needs to be clamped, the driving motor is started to rotate reversely, the driving motor drives the first screw rod to rotate through the rotating rod, under the action of threads, the moving plate drives the positioning device to move towards the direction far away from the driving motor through the two connecting plates, then the edge of the silk screen is clamped at the position through the positioning device, the driving motor is started to rotate forwards, the positioning device is further driven to move towards the direction of the driving motor, the silk screen is tightened, and after the silk screen is tightened, the silk screen is positioned above all workpieces, so that the silk screen is conveniently clamped, and is positioned above all the workpieces and cannot jack the workpieces during printing, so that the printing effect of the product is better.

2. This silk screen device of tightening convenient to adjustment through setting up positioner, locating rack, second screw rod, thread bush and splint, when needs fix a position the silk screen, places the silk screen between splint and locating rack, then forward rotation second screw rod, under the effect of screw thread, splint remove, with the silk screen centre gripping between splint and locating rack.

Drawings

FIG. 1 is a schematic view of a screen tensioning apparatus according to the present invention, which is easy to adjust;

FIG. 2 is a schematic side view showing a clamping unit of the screen tensioning apparatus according to the present invention, which is easy to adjust;

FIG. 3 is an enlarged partial schematic view of the present invention;

fig. 4 is an enlarged view of a portion B in fig. 3.

In the figure: the device comprises a mounting platform 1, a clamping device 2, a mounting plate 21, a driving motor 22, a fixed frame 23, a rotating rod 24, a first screw rod 25, a moving plate 26, a connecting plate 27, a positioning device 28, a positioning frame 281, a second screw rod 282, a threaded sleeve 283, a clamping plate 284, a limiting groove 3, a limiting block 4, a ball groove 5, a ball 6, a rotating handle 7 and a sliding rod 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a screen tensioning device convenient for adjustment comprises an installation platform 1, wherein a plurality of groups of clamping devices 2 are fixedly connected to the installation platform 1 in an annular array, and each group of clamping devices 2 comprises a plurality of clamping devices 2 uniformly and equidistantly fixedly connected to the installation platform 1;

the clamping device 2 comprises an installation plate 21, a driving motor 22, a fixed frame 23, a rotating rod 24, a first screw 25, a threaded hole, a moving plate 26, a connecting plate 27 and a positioning device 28, wherein the installation plate 21 is fixedly connected to the installation platform 1, the driving motor 22 is fixedly connected to one end of the installation plate 21, the fixed frame 23 is fixedly connected to the other end of the installation plate 21, the rotating rod 24 is fixedly connected to the output end of the driving motor 22, one end of the rotating rod 24, far away from the driving motor 22, penetrates through the fixed frame 23 and extends into the fixed frame 23, the first screw 25 is fixedly sleeved on a rod wall of the rotating rod 24, located in the fixed frame 23, the moving plate 26 is slidably connected in the fixed frame 23, the threaded hole is formed in the position, corresponding to the first screw 25, of the moving plate 26, the first screw 25 penetrates through the threaded, the ends of the two connecting plates 27, which are far away from the moving plate 26, are fixedly connected together at corresponding positions of a positioning device 28, the positioning device 28 is positioned in the fixed frame 23, when the silk screen needs to be clamped, the driving motor 22 is started to rotate reversely, the driving motor 22 drives the first screw rod 25 to rotate through the rotating rod 24, under the action of the screw thread, the moving plate 26 drives the positioning device 28 to move away from the driving motor 22 through the two connecting plates 27, then the edge of the silk screen is clamped by the positioning device 28, and then the driving motor 22 is started to rotate forward, so as to drive the positioning device 28 to move towards the driving motor 22, the silk screen is tensioned, and after the silk screen is tensioned, the silk screen is positioned above the workpiece, so that the silk screen is convenient to clamp, and the silk screen is positioned above the workpiece, so that the silk screen cannot jack the workpiece during printing, and the printing effect of the product is better.

The positioning device 28 comprises a positioning frame 281, a second screw rod 282, a threaded sleeve 283 and a clamping plate 284, wherein the positioning frame 281 is arranged in a U shape, one ends of the two connecting plates 27 far away from the moving plate 26 are fixedly connected to the side wall of the positioning frame 281 together, the threaded sleeve 283 is fixedly communicated with the side wall of the positioning frame 281 close to the moving plate 26, the second screw rod 282 passes through the threaded sleeve 283 and is in threaded connection with the threaded sleeve 283, the clamping plate 284 is slidably connected in the positioning frame 281, one end of the second screw rod 282 close to the clamping plate 284 is rotatably connected with the clamping plate 284 through a bearing, when the silk screen needs to be positioned, the silk screen is placed between the clamping plate 284 and the positioning frame 281, then the second screw rod 282 is rotated in the forward direction, and under the action of the threads, the clamping plate 284 moves to clamp the silk screen between the clamping plate.

Limiting groove 3 has been seted up to the position that mounting panel 21 corresponds the locating rack 281, and sliding connection has stopper 4 in the limiting groove 3, and the one end that 3 tank bottoms in limiting groove were kept away from to stopper 4 passes limiting groove 3 and outwards extends, and fixed connection is on the corresponding position of locating rack 281 bottom for locating rack 281 is more reliable and more stable at the in-process that removes.

The ball groove 5 has been seted up to the one end that stopper 4 is close to the 3 tank bottoms of spacing groove, and ball 6 is connected in the ball groove 5 roll, and ball 6 keeps away from the one end of 5 tank bottoms of ball groove and passes the notch of ball groove 5 and outwards extend, and with the tank bottom roll connection of spacing groove 3 for stopper 4 removes more smoothly in spacing groove 3.

A rotating handle 7 is fixedly connected to an end of the second screw 282 away from the clamping plate 284, so as to rotate the second screw 282.

The position near the bottom in the positioning frame 281 is fixedly connected to the sliding rod 8, and the sliding rod 8 passes through the clamping plate 284 and is slidably connected with the clamping plate 284, so that the clamping plate 284 moves more stably and reliably in the positioning frame 281.

The outer surfaces of the mounting platform 1 and the mounting plate 21 are coated with anticorrosive coatings, so that a good anticorrosive effect is achieved.

In summary, in the screen tensioning device convenient for adjustment, when a screen needs to be clamped, the driving motor 22 is first started to rotate in a reverse direction, the driving motor 22 drives the first screw rod 25 to rotate through the rotating rod 24, the moving plate 26 drives the positioning device 28 to move in a direction away from the driving motor 22 through the two connecting plates 27 under the action of the screw threads, then the edge of the screen is clamped through the positioning device 28, then the driving motor 22 is started to rotate in a forward direction, and the positioning device 28 is further driven to move in a direction towards the driving motor 22, so as to tension the screen, and after the screen is tensioned, the screen is located above all the workpieces, so that the screen is conveniently clamped, and the screen is located above all the workpieces, so that the printing effect of the product is good, when the screen needs to be positioned, the screen is placed between the clamping plate 284 and the positioning frame 281, then, the second screw 282 is rotated in the forward direction, and the clamping plate 284 is moved by the screw, so that the screen is clamped between the clamping plate 284 and the spacer 281.

It is to be noted that 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a silk screen tightening device convenient to adjustment, includes mounting platform (1), its characterized in that: a plurality of groups of clamping devices (2) are fixedly connected to the mounting platform (1) in an annular array manner, and each group of clamping devices (2) comprises a plurality of clamping devices (2) which are uniformly and equidistantly fixedly connected to the mounting platform (1);

clamping device (2) includes mounting panel (21), driving motor (22), fixed frame (23), dwang (24), first screw rod (25), screw hole, movable plate (26), connecting plate (27) and positioner (28), mounting panel (21) fixed connection is on mounting platform (1), driving motor (22) fixed connection is in the one end of mounting panel (21), the other end on mounting panel (21) of fixed frame (23) fixed connection, dwang (24) fixed connection is on the output of driving motor (22), the one end that driving motor (22) were kept away from in dwang (24) is passed fixed frame (23) and is extended to fixed frame (23), fixed cover of first screw rod (25) is connected on the pole wall that dwang (24) is located fixed frame (23), movable plate (26) sliding connection is in fixed frame (23), the screw hole is seted up on the position that movable plate (26) corresponds first screw rod (25), first screw rod (25) pass the screw hole and rather than threaded connection, two connecting plate (27) symmetry fixed connection keeps away from the both sides of driving motor (22) one end at movable plate (26), two the common fixed connection of one end that movable plate (26) were kept away from in connecting plate (27) is on the corresponding position of positioner (28), positioner (28) are located fixed frame (23).

2. A screen tensioning device for facilitating adjustment according to claim 1, wherein: the positioning device (28) comprises a positioning frame (281), a second screw rod (282), a threaded sleeve (283) and a clamping plate (284), wherein the positioning frame (281) is U-shaped, one end, far away from the moving plate (26), of each connecting plate (27) is fixedly connected to the side wall of the positioning frame (281), the threaded sleeve (283) is fixedly communicated to the side wall, close to one side of the moving plate (26), of the positioning frame (281), the second screw rod (282) penetrates through the threaded sleeve (283) and is in threaded connection with the threaded sleeve, the clamping plate (284) is slidably connected into the positioning frame (281), and one end, close to the clamping plate (284), of the second screw rod (282) is rotatably connected with the clamping plate (284) through a bearing.

3. A screen tensioning device for facilitating adjustment according to claim 2, wherein: spacing groove (3) have been seted up to the position that mounting panel (21) correspond locating rack (281), sliding connection has stopper (4) in spacing groove (3), the one end that spacing groove (3) tank bottom was kept away from in stopper (4) passes and outside extension of spacing groove (3), and fixed connection is on the corresponding position of locating rack (281) bottom.

4. A screen tensioning device for facilitating adjustment according to claim 3, wherein: ball groove (5) have been seted up to stopper (4) one end that is close to spacing groove (3) tank bottom, ball (6) are connected in ball groove (5) the roll, ball (6) are kept away from the one end of ball groove (5) tank bottom and are passed the notch of ball groove (5) and outwards extend, and with the tank bottom roll connection of spacing groove (3).

5. A screen tensioning device for facilitating adjustment according to claim 2, wherein: one end of the second screw rod (282) far away from the clamping plate (284) is fixedly connected with a rotating handle (7).

6. A screen tensioning device for facilitating adjustment according to claim 2, wherein: the position, close to the bottom, in the positioning frame (281) is fixedly connected to the sliding rod (8), and the sliding rod (8) penetrates through the clamping plate (284) and is in sliding connection with the clamping plate (284).

7. A screen tensioning device for facilitating adjustment according to claim 1, wherein: the outer surfaces of the mounting platform (1) and the mounting plate (21) are coated with anticorrosive coatings.