TWI643759B - Screen printing machine - Google Patents

Abstract

The screen printing machine of the invention is mainly composed of a moving bracket, a lifting mechanism, a scraper and a screen plate, and the moving bracket can drive the lifting mechanism, the scraper and the screen to move laterally along the X-axis or the Y-axis, so that the scraper and the screen are both Simultaneously moving from a standby area where no printed pattern is formed on the printing member to a printing area capable of forming a printed pattern, and the lifting mechanism can drive the blade and the screen to move longitudinally along the Z axis, so that both the blade and the screen Simultaneously approaching or moving away from the printing member, whereby both the doctor blade and the screen can be sequentially moved to different printing areas through the moving bracket to perform the printing operation, thereby shortening the printing stroke of the blade, so that the printing member can be formed in a short time. Multiple printed patterns further increase work efficiency and reduce printing costs.

Description

Screen printing machine

The invention relates to a screen printing machine used for printing operations, in particular to a screen printing machine capable of simultaneously moving a doctor blade and a screen to a position to be printed.

In a general screen printing operation, a screen printing machine applies ink to a screen through a doctor blade of a printing device, and allows ink to pass through the pores of the screen to be printed on the surface of the printing member, so that the surface of the printing member can be formed. Printed pattern.

However, in the field of screen printing machines, the screen must be cut and produced in accordance with the size of the printing member, so that the printing member can form a printing pattern at a preset position, thereby, when the printing member only forms a printing at a corner. Patterns, this type of printing will not only increase the material cost of the screen, but also increase the printing schedule, thereby reducing production efficiency.

In addition, if the screen printing machine wants to print the printing patterns of different angles on the printing parts, the printing apparatus cannot change the angle, but it is necessary to make the screen printing pattern suitable for the angle printing pattern, which is not only time-consuming and labor-intensive, but also more time-consuming and labor-intensive. Will increase the cost of production.

The main object of the present invention is that after both the doctor blade and the screen are finished printing at a certain position, the two can quickly move to the next printing position, thereby effectively shortening the printing stroke of the blade, thereby increasing work efficiency and reducing printing cost. Moreover, since the screen can be moved relative to the printing member, the screen can be cut according to the size of the pattern to be printed, thereby reducing the material cost of the screen.

The secondary object of the present invention is that both the doctor blade and the screen can adjust the angle according to the printing pattern required by different angles, so that when both the blade and the screen can print the printing, the printing piece will form an inclined state. Printed pattern.

In order to achieve the foregoing object, the present invention relates to a screen printing machine for forming a printing pattern on a printing member, and is mainly composed of a conveying mechanism, a screen printing device and a synchronous screen printing device. The printing member is moved along the X-axis direction, wherein the printing member has at least one printing area capable of forming a printing pattern, and a standby area is formed in a region where the printing pattern is not formed.

The screen printing device is mainly composed of a printing mechanism, a steering mechanism, a lifting mechanism and a moving bracket. The printing mechanism is provided with an auxiliary lifting assembly assembled to the steering mechanism, and the auxiliary lifting assembly is assembled with a movable scraper and A screen printed in conjunction with the above-described doctor blade, wherein the screen has a shape smaller than that of the printing plate.

The steering mechanism is interposed between the lifting mechanism and the printing mechanism, so that the steering mechanism can be used to change the relative position of the printing mechanism and the printing member, so that the printing mechanism can selectively intersect in a first direction and a direction. The printing member is printed in a second direction of the first direction and a third direction opposite to the first direction.

However, the printing mechanism can be pivotally connected to the lifting mechanism through the steering mechanism, whereby the lifting mechanism can drive the printing mechanism to move longitudinally along the Z-axis direction, so that the blade and the screen can be close to or away from the screen at the same time. In the above printing apparatus, in the case where the lifting mechanism does not move the printing mechanism, the auxiliary lifting unit can separately drive the blade and the screen to approach or move away from the printing member.

In this embodiment, the steering mechanism has a first steering member, a second steering member, a positioning member, and a limiting component. The first steering member and the second steering member are mutually disposed, and the One of the first steering member and the second steering member is assembled to the lifting mechanism, and the other is assembled to the printing mechanism, wherein the first steering member forms a contact bump, and the contact bump is used for Contacting a contact surface formed inside the second steering member, and the normal direction of the contact surface is not parallel to the X-axis or the Y-axis, thereby causing the contact bump to contact the contact surface When the first steering member is rotated relative to the second steering member, the printing mechanism is not separated from the lifting mechanism.

In addition, the positioning member is coupled to the second steering member, and has a positioning space for accommodating the partial portion of the first steering member and two clamping jaws capable of jointly changing the size of the positioning space, when the two clamping jaws are close to each other. The space of the positioning space can be reduced, so that the two clamping jaws can contact the first steering member, and the first steering member cannot be rotated relative to the second steering member, so that the printing device can only One of the first direction, the second direction and the third direction is printed by a pair of the printing members. Conversely, when the two jaws are apart from each other, the space of the positioning space can be enlarged, so that the two jaws are common. Separating from the first steering member, the first steering member is rotatable relative to the second steering member.

Furthermore, the limiting component is configured to limit the rotation amplitude of the printing mechanism, and has a limiting rail formed on the positioning component and a limiting protrusion disposed on the limiting rail, the limiting rail is at one end Forming a first limiting end, the other end forming a second limiting end, wherein the printing mechanism is pivotally connected to the lifting mechanism through the steering mechanism, so that the limiting protrusion can be the first limit One of the end and the second limit end moves to the other, whereby when the limiting protrusion touches the first limit end, the printing mechanism is located at a first position, so that the scraper is Performing a printing operation on the printing member in the first direction, and when the limiting protrusion is located between the first limiting end and the second limiting end, the printing mechanism is located at a second position, so that the scraper is Performing a printing operation on the printing member in the second direction, and when the limiting protrusion is in contact with the second limiting end, the printing mechanism is located at a third position, so that the scraping blade is in the third direction Said printing member for printing jobs.

However, the moving bracket is assembled to the lifting mechanism, and can simultaneously drive the printing mechanism, the lifting mechanism and the steering mechanism to move laterally along the X-axis or the Y-axis, so that the blade and the screen are simultaneously printed by the printing area and the standby screen. One of the two regions is moved to the other. In this embodiment, the moving bracket has two spaced-apart support columns, and a first translation between the two support columns is provided to drive the printing mechanism along the Y-axis direction. And a second translation assembly capable of driving the printing mechanism along the X-axis direction at an end of the support column away from the first translation assembly.

Finally, the synchronous screen printing apparatus is arranged at intervals along the X-axis direction on the screen printing apparatus, and the screen printing apparatus and the synchronous screen printing apparatus can simultaneously simultaneously print the printing areas at different positions.

The invention is characterized in that the scraper and the screen can be moved on the printing member at the same time through the moving bracket, so that when the scraper and the screen are finished at one position, the scraper and the screen can be moved to the next position for printing operation, and then The utility model can effectively shorten the printing formation of the scraper, thereby effectively achieving the effects of increasing work efficiency and reducing printing cost, and the moving bracket can drive the screen to move on the printing member, so that the screen can be cut according to the size of the pattern to be printed. In turn, the material cost of the screen can be reduced.

In addition, both the scraper and the screen are pivotally connected to the lifting mechanism through the steering mechanism, and both the scraper and the screen can adjust the angle according to the printing pattern required by different angles, so that both the scraper and the screen can print the printing During the work, the printed product forms a printed pattern that exhibits an oblique pattern.

In order to further clarify and understand the structure, the use and the features of the present invention, the preferred embodiment is described in detail with reference to the following drawings:

Referring to FIG. 1, the screen printing machine 1 of the present invention has a base 10, a screen printing device 20 assembled to the base 10, and a synchronous screen printing device 30 for assembling the base 10. The base 10 supports the screen printing. The total weight of both the device 20 and the synchronous printing device is provided with a transport mechanism 11 and a plurality of connectors 12 on the top surface.

Referring to FIG. 2 and FIG. 3, the screen printing device 20 is mainly composed of a moving bracket 21, a lifting mechanism 22, a printing mechanism 23 and a steering mechanism 24. The moving bracket 21 has two spaced-apart supports. The column 211, one of the two supporting columns 211 is connected to the other supporting column 211 through a first translation component 212 capable of moving in the Y-axis direction, so that the first translation component 212 is located between the two supporting columns 211. Each of the support posts 211 has a second translation component 213 assembled to the base 10 (shown in FIG. 1) at an end remote from the first translation component 212, and the second translation component 213 can be used. The two support columns 211 and the first translation assembly 212 are simultaneously driven to reciprocate linearly along the X axis.

Referring to FIG. 3 and FIG. 4, the lifting mechanism 22 is assembled to the first translation component 212 of the moving bracket 21, so that the first translation component 212 can drive the lifting mechanism 22 to reciprocate linearly along the Y axis, such as As shown, the lifting mechanism 22 has a lifting drive source 221 assembled to the first translation assembly 212. The lifting drive source 221 is movably assembled with a movable moving member 222, and the moving member 222 is subjected to the lifting drive source. The 221 is driven to selectively approach or move away from the transport mechanism 11 of the base 10.

Referring to FIG. 3 and FIG. 5, the printing mechanism 23 is provided with a printing head 231 and a screen 232 below the printing head 231. The printing head 231 has a blade 231a movable toward the screen 232 and An ink returning blade 231b located on one side of the scraper 231a, and the ink returning blade 231b is also movable toward the screen 232. As shown, the print head 231 is movably coupled to a moving component 233 such that the moving component 233 can drive the print head 231 to move laterally, and the screen 232 is fixedly connected to the moving component 233, so that when the print head 231 is driven by the moving component 233, between the screen 232 and the moving component 233 The relative relationship does not change. The moving component 233 is connected to an auxiliary lifting component 234. The auxiliary lifting component 234 can drive the printing head 231, the screen 232 and the moving component 233 to move up and down, so that the printing head 231, The screen 232 and the moving assembly 233 are selectively accessible or remote from the transport mechanism 11 described above.

Referring to FIG. 3 and FIG. 6 , the steering mechanism 24 is interposed between the lifting mechanism 22 and the printing mechanism 23 , and comprises a first steering member 241 , a second steering member 242 , a positioning member 243 , and a limit The first component 244 is assembled to the auxiliary lifting component 234, and a contact protrusion 241a is formed at an end away from the auxiliary lifting component 234, and the second steering component 242 is assembled to the lifting The moving member 222 of the device has a first space 242a and a second space 242b on a side of the first space 242a. The second space 242b is provided with a contact surface 242c whose normal direction is parallel to the Z axis. The normal direction of the contact surface 242c is parallel to the Z-axis for convenience of explanation, and the arrangement of the contact surface 242c may be changed as long as the normal direction of the contact surface 242c is not parallel to the X-axis or Y. The shaft can be.

As shown in the figure, the first steering member 241 is disposed on the second steering member 242 such that the first steering member 241 is simultaneously located in the first space 242a and the second space 242b, and the contact bump 241a is located above. The second space 242b further causes the contact bump 241a to contact the contact surface 242c of the second space 242b, whereby the printing mechanism 23 can be pivotally connected to the lifting mechanism 22 via the steering mechanism 24.

The positioning member 243 is formed at an end of the second steering member 242 away from the lifting mechanism 22, and has a positioning space 243a for accommodating a partial section of the first steering member 241 and two spaces for changing the space of the positioning space 243a. The clamping jaw 243b, the positioning space 243a communicates with the second space 242b of the second steering member 242, wherein when the two clamping jaws 243b are close to each other, the space of the positioning space 243a is reduced, and conversely, when the two clamping members are When the claws 243b are apart from each other, the space of the above-described positioning space 243a becomes large.

Moreover, the limiting component 244 is configured to limit the rotation amplitude of the printing mechanism 23 and is interposed between the auxiliary lifting component 234 and the second steering component 242. The limiting component 244 has a recess formed in the positioning. a limiting rail 244a of the member 243 and a limiting protrusion 244b assembled to the auxiliary lifting assembly 234, the appearance of the limiting rail 244a is semi-arc-shaped, and a first limiting end 244c is formed at each end and a second limiting end 244d, and the limiting protrusion 244b is configured to pass through the limiting rail 244a.

Referring to FIG. 7, the printing mechanism 23 is rotated by the steering mechanism 24 with the second steering member 242 as an axis, and the limiting protrusion 244b is moved along the limiting rail 244a to the first limit. The end 244c, in turn, the printing mechanism 23 is located at a first position P1, whereby the moving component 233 of the printing mechanism 23 can simultaneously drive the scraper 231a and the ink re-etching blade 231b in a first direction D1 parallel to the X-axis. The printing operation is performed on the screen 232 described above.

Referring to FIG. 8 , the printing mechanism 23 is rotated counterclockwise by the steering mechanism 24 with the second steering member 242 as an axis, so that the limiting protrusion 244 b is away from the first limiting end 244 c and gradually Close to the second limiting end 244d, when the limiting protrusion 244b is located between the first limiting end 244c and the second limiting end 244d, the printing mechanism 23 is located away from the first position P1. The second position P2, whereby the moving component 233 of the printing mechanism 23 can simultaneously drive the scraper 231a and the ink returning blade 231b to perform a printing operation on the screen 232 in a second direction D2 intersecting the X-axis, as shown in the figure. As shown, the second direction D2 is parallel to the Y axis. However, the second direction D2 is parallel to the Y axis for convenience of explanation, that is, the second direction D2 is only required to be parallel to the X axis.

Referring to FIG. 9, the printing mechanism 23 continues to rotate counterclockwise with respect to the lifting mechanism 22 through the steering mechanism 24, and moves the limiting protrusion 244b to the second limiting end 244d to further enable the printing mechanism 23. Moving from the second position P2 to a third position P3 away from the second position P2, whereby the moving component 233 of the printing mechanism 23 can simultaneously drive the scraper 231a and the ink re-cutting blade 231b to be opposite to the above The third direction D3 of the one direction D1 performs a printing operation on the screen 232 described above.

Referring to FIG. 1 , the synchronous screen printing device 30 is arranged in the X-axis direction at the screen printing device 20 . In this embodiment, the screen printing device 20 and the synchronous screen printing device 30 are both disposed. It is composed of the same structure, so that the above-mentioned synchronous screen printing device 30 will not be described in detail later. However, the above-mentioned screen printing device 20 and synchronous screen printing device 30 are composed of the same structure for convenience of explanation. That is, the structural composition of the synchronous screen printing device 30 described above may be different from the above-described screen printing device 20.

Referring to FIG. 10 and FIG. 11, the transport mechanism 11 drives a printing member 40 having a shape larger than the screen 232 to move laterally along the X-axis to move the printing member 40 to the lower side of the printing mechanism 23. The printing member 40 has at least one printing area 41 capable of forming a printing pattern, and forms a standby area 42 in a region where the printing pattern is not formed, wherein the printing unit 40 is located between the conveying mechanism 11 and the screen 232. When the printing member 40 is assembled to the connecting member 12 of the base 10, the printing member 40 cannot be moved. At this time, the first translation assembly 212 and the second translation assembly 213 drive the printing mechanism 23 to move. The scraper 231a, the ink returning blade 231b and the screen 232 are simultaneously moved from the standby area 42 to the printing area 41, and the synchronous screen printing apparatus 30 is moved to the other printing area 41. Subsequently, the printing mechanism 23 is different. The printed pattern of the angle requirement is rotated by the steering mechanism 24 to one of the first position P1, the second position P2, and the third position P3, so that The relative position of the printing mechanism 23 and the printing member 40 is changed by the steering mechanism 24, wherein, as shown in FIG. 12, during the rotation of the printing mechanism 23, the contact bump 241a of the first steering member 241 will Continuously touching the contact surface 242c of the second deflecting member 242, so that the printing mechanism 23 is not separated from the lifting mechanism 22 by gravity.

Referring to FIG. 13, when the printing mechanism 23 is located at one of the first position P1, the second position P2 and the third position P3, a screw 245 is screw-fitted to the two jaws of the positioning member 243. 243b, such that the screw 245 brings the two clamping jaws 243b closer to each other, and the space of the positioning space 243a is gradually reduced, so that the shape volume of the positioning space 243a is the same as the shape volume of the first steering member 241. Therefore, the two clamping jaws 243b are in contact with the first steering member 241, so that the printing mechanism 23 cannot be rotated relative to the lifting mechanism 22, and the blade 231a can continue to be in the first position P1 and the second position. P2 or the third position P3, on the other hand, the screw 245 moves the two clamping jaws 243b away from each other, so that the space of the positioning space 243a is gradually increased, thereby causing the positioning volume 243a to have a larger shape volume than the first steering member. a shape volume of the 241, whereby the two jaws 243b are collectively separated from the first steering member 241, so that the printing mechanism 23 can be opposite to the lifting mechanism 22 Make a turn.

Referring to FIG. 14 , when the printing mechanism 23 is positioned at the first position P1 , the second position P2 or the third position P3 , the lifting and lowering driving source 221 of the lifting mechanism 22 drives the printing mechanism via the moving member 222 . 23 is close to the printing member 40, so that the screen 232 touches the printing area 41 of the printing unit 40, and then the blade 231a and the ink returning blade 231b of the printing mechanism 23 are transmitted through the moving component 233 and the auxiliary lifting component 234. The printing area 41 performs a printing operation in the first direction D1, the second direction D2, or the third direction D3, and the synchronous screen printing apparatus 30 simultaneously prints the printing areas 41 at different positions.

Wherein, if the thickness of the printing member 40 is thin, the printing mechanism 23 does not need to pass through the lifting mechanism 22 to approach the printing member 40, and can be driven by the auxiliary lifting unit 234 of the printing mechanism 23 via the moving assembly 233. The scraper 231a, the ink returning blade 231b and the screen 232 are close to the printing member 40, whereby the auxiliary lifting assembly 234 of the printing mechanism 23 can be separated by the lifting mechanism 22 without moving the scraping blade 231a. The scraper 231a, the ink returning blade 231b and the screen 232 are simultaneously moved away from the lifting mechanism 22 so that the screen 232 is in contact with the printing member 40.

The above embodiments are intended to be illustrative only, and are not intended to limit the scope of the present invention. It is included in the scope of the following patent application.

1‧‧‧ Screen Printing Machine

10‧‧‧Base

11‧‧‧Transportation agencies

12‧‧‧Connecting parts

20‧‧‧ Screen printing device

21‧‧‧Mobile bracket

211‧‧‧Support column

212‧‧‧First translation assembly

213‧‧‧Second translation assembly

22‧‧‧ Lifting mechanism

221‧‧‧ Lifting drive source

222‧‧‧Mobile parts

23‧‧‧Printing agency

231‧‧‧Print head

231a‧‧‧Scraper

231b‧‧‧Returning knife

232‧‧‧Web Edition

233‧‧‧Mobile components

234‧‧‧Auxiliary lifting assembly

24‧‧ ‧ steering mechanism

241‧‧‧First steering piece

241a‧‧‧牴 bumps

242‧‧‧Second steering piece

242a‧‧‧First space

242b‧‧‧Second space

242c‧‧‧Contact surface

243‧‧‧ Positioning parts

243a‧‧‧Location space

243b‧‧‧claw

244‧‧‧Limited components

244a‧‧‧Limited orbit

244b‧‧‧Limited bumps

244c‧‧‧first limit

244d‧‧‧second limit

245‧‧‧ screw

30‧‧‧Synchronized screen printing device

40‧‧‧Printed parts

41‧‧‧Printing area

42‧‧‧Standby area

D1‧‧‧ first direction

D2‧‧‧ second direction

D3‧‧‧ third direction

P1‧‧‧ first position

P2‧‧‧ second position

P3‧‧‧ third position

1 is a schematic view of a screen printing machine of the present invention; FIG. 2 is a perspective view of a screen printing apparatus of the present invention; FIG. 3 is an exploded view of the screen printing apparatus of the present invention; Figure 6 is an exploded view of the steering mechanism of the present invention; Figure 7 is a schematic view of the printing device in a first position; Figure 8 is a schematic view of the printing device in a second position; Figure 9 is a third position of the printing device Figure 10 is a schematic view of the printing member assembled to the conveying mechanism; Figure 11 is a schematic view of the simultaneous movement of the blade and the screen; Figure 12 is a schematic view of the first steering member assembled to the second steering member; Schematic diagram of the size of the space; and Figure 14 is a schematic diagram of the lifting mechanism driving the printing mechanism downward.

Claims (10)

A screen printing machine comprising: a conveying mechanism for driving a printing member to move along an X-axis direction, the printing member having at least one printing area capable of forming a printing pattern, and forming a standby area in a region where the printing pattern is not formed And a screen printing device, located above the printing member, comprising: a printing mechanism, located above the conveying mechanism, comprising: a screen, the shape is smaller than the printing member; a scraper, matched with the screen printing; a moving component And the auxiliary lifting assembly is connected to the moving component, and drives the screen and the blade to move up and down; a lifting mechanism can drive the printing mechanism to move in the Z-axis direction, so that The scraper and the screen can be close to or away from the printing member at the same time; and a moving bracket can drive the lifting mechanism to move laterally along the X-axis or the Y-axis, so that the scraper and the screen can be simultaneously from the printing area and the standby area One of the two moves to the other. The screen printing machine of claim 1, wherein the moving bracket has two spaced apart support columns, and a first translation component capable of driving the printing mechanism along the Y-axis direction is disposed between the two support columns. The support post is disposed at an end away from the first translation assembly to provide a second translation assembly that drives the printing mechanism along the X-axis direction. The screen printing machine of claim 1, wherein the screen printing machine further comprises a synchronous screen printing device, wherein the synchronous screen printing device is arranged along the X-axis direction at the screen printing device. The above-mentioned screen printing device and the synchronous screen printing device can simultaneously simultaneously print the printing areas at different positions. The screen printing machine of claim 1, wherein the steering mechanism and the printing mechanism are provided with a steering mechanism, wherein the steering mechanism is used to change the relative position of the printing mechanism and the printing component, so that the printing mechanism can select The printing member is printed in a first direction or a second direction intersecting in the first direction. The screen printing machine of claim 4, wherein the steering mechanism has a first steering member assembled to one of the lifting mechanism and the printing mechanism, and a second steering member assembled to the other The first steering member is disposed on the second steering member to enable the first steering member to rotate relative to the second steering member, and the first steering member is transmitted through a positioning member coupled to the second steering member It is impossible to rotate relative to the second steering member. The screen printing machine of claim 5, wherein the positioning member has a positioning space for accommodating a partial section of the first steering member and two jaws capable of jointly changing the size of the positioning space, the two clips The claws are selectively close to or away from each other to change the size of the space of the positioning space, so that the two clamping jaws are in common contact with the first steering member, so that the first steering member cannot be rotated, and thus the printing device can only The print is printed in the first direction or the second direction. The screen printing machine of claim 5, wherein the second steering member has a contact surface non-parallel to the X-axis or the Y-axis in a normal direction, and the contact surface is formed in the first When the first steering member rotates relative to the second steering member, the printing mechanism does not separate from the lifting mechanism. The screen printing machine of claim 5, wherein the steering mechanism further has a limiting rail formed on the positioning member and a limiting protrusion disposed on the limiting rail. When the limiting protrusion is in contact with a first limiting end formed on the limiting rail, the printing mechanism can only perform the printing operation in the first direction. The screen printing machine of claim 8, wherein the printing device can be used when the limiting protrusion is moved from the first limiting end to a second limiting end formed on the limiting rail. The printing operation is performed on the printing member opposite to the third direction of the first direction. The screen printing machine according to claim 1, wherein the auxiliary lifting unit can separately drive the blade and the screen to approach or move away from the printing member when the lifting mechanism does not move the printing mechanism.