CN216683688U - Screen arm structure of screen printing machine - Google Patents

Abstract

The utility model relates to the technical field of printing equipment, and discloses a screen arm structure of a screen printing machine, aiming at solving the technical problem that printing quality is affected due to the fact that an existing screen arm cannot be accurately aligned. Can make the screen frame X to removing through the portion of linking up, can make the screen frame remove along Z through lift adjustment mechanism, can make the screen frame remove along Y through slide rail structure, can finely tune to fine motion adjustment mechanism through Y, improved the precision of regulation, make the accurate counterpoint of screen frame, improved the printing quality.

Description

Screen arm structure of screen printing machine

Technical Field

The utility model relates to the technical field of printing equipment, in particular to a screen arm structure of a screen printing machine.

Background

The screen printer has the working principle that a printing material is placed on a printing table, then a screen plate is put down on a printing platform and covers the printing material, and ink or printing material is scraped or printed on the screen plate through an ink scraping knife assembly to form patterns by silk screen printing of the ink or printing material on the printing material.

The screen arm of the screen printing machine is used for clamping the screen frame so as to be accurately placed on a product to be printed. Therefore, the placement accuracy of the screen frame is very important, the existing product can not be accurately aligned, and certain deviation exists, so that the printing quality is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a screen arm structure of a screen printing machine, which aims to solve the technical problem that the printing quality is influenced because the existing screen arm cannot be accurately aligned.

In order to achieve the purpose, the specific technical scheme of the screen arm structure of the screen printing machine is as follows:

the utility model provides a screen printing machine's net arm structure, including the clamping part that is used for the centre gripping screen frame, but mobile articulate the portion of hanging on the portal, the regulating part of being connected with clamping part and the portion of hanging, the regulating part includes the cylinder, adjust relative position's slide along the cylinder, be equipped with slide rail structure between cylinder and the slide, be provided with the lift adjustment mechanism who is connected with the clamping part on the slide, be equipped with Y between cylinder and the slide to fine motion adjustment mechanism, including connecting the regulating spindle that rotates the regulation interval through the screw thread between slide and cylinder, be equipped with in the cylinder with regulating spindle complex shaft hole, the regulating spindle is connected with the fine setting handle. The hanging part hung on the portal frame through the activity can enable the screen frame to move in the X direction, the lifting adjusting mechanism can enable the screen frame to move in the Z direction, the slide rail structure can enable the screen frame to move in the Y direction, and fine adjustment can be performed on the fine adjustment mechanism in the Y direction, so that the adjustment precision is improved, the screen frame is accurately aligned, and the printing quality is improved.

Furthermore, a pressure spring for enhancing and adjusting hand feeling is arranged between the cylinder body and the sliding plate.

Furthermore, the lifting adjusting mechanism comprises a telescopic cylinder fixed on the sliding plate, a cross rod connected with the telescopic cylinder and a guide rod penetrating through the sliding plate and connected with the clamping part.

Furthermore, the clamping part comprises a U-shaped clamping groove and two switching blocks arranged outside the clamping groove, the upper part of the clamping groove is further provided with an adjusting bolt for screwing the clamping net frame, the guide rod is connected with the switching blocks, and a connecting rod for increasing the connection stability is further arranged between the two switching blocks.

Furthermore, the sliding plate is L-shaped.

Furthermore, an upper guide rail, a lower guide rail and a T-shaped groove are arranged on the door frame, the hanging part comprises an upper sliding block and a lower sliding block which are respectively hung on the upper guide rail and the lower guide rail, the hanging part is provided with a first locking piece connected with the T-shaped groove, and an X-direction micro-motion adjusting mechanism is arranged between the door frame and the T-shaped groove.

The screen arm structure of the screen printing machine provided by the utility model has the following advantages:

the hanging part hung on the portal frame through the activity can enable the screen frame to move in the X direction, the lifting adjusting mechanism can enable the screen frame to move in the Z direction, the slide rail structure can enable the screen frame to move in the Y direction, and fine adjustment can be performed on the fine adjustment mechanism in the Y direction, so that the adjustment precision is improved, the screen frame is accurately aligned, and the printing quality is improved.

Drawings

FIG. 1 is a perspective view of a screen printing machine of the present invention;

FIG. 2 is a block diagram of a printing platform of the present invention;

FIG. 3 is a block diagram of the printing platform, positioning mechanism and synchronous transport mechanism of the present invention;

FIG. 4 is a view showing the construction of a feeding apparatus according to the present invention;

FIG. 5 is a view showing the construction of the Y-direction driving mechanism of the present invention;

FIG. 6 is a view showing the structure of a discharging device of the present invention;

FIG. 7 is a perspective view of a web arm construction of the present invention;

FIG. 8 is a top view of a web arm construction of the present invention;

fig. 9 is a perspective view of the left web arm structure of the present invention.

In the figure: 10. a printing platform; 11. a front straight groove; 12. a rear straight groove; 14. a guide frame; 15. a synchronous belt; 16. vacuum adsorption of air holes; 131. a rear left positioning head; 132. a rear right positioning head; 133. a left positioning head; 134. a right positioning head; 135. a front positioning head;

20. a feeding device; 21. a Y-direction driving mechanism; 22. a circumferential drive mechanism; 23. a jacking mechanism; 221. a support; 222. a drum; 223. positioning a blocking frame; 224. a sensor;

30. a discharging device; 31. a tensioning mechanism;

40. a screen frame;

50. a gantry; 51. a hanging part; 52. an adjustment section; 53. a clamping portion; 54. a lower guide rail; 55. an upper guide rail; 57. a T-shaped groove; 58. a printer head; 511. an upper slide block; 512. a lower slide block; 513. a first locking member; 521. a cylinder; 522. a slide plate; 523. a pressure spring; 524. an adjustment shaft; 525. a telescopic cylinder; 526. a cross bar; 527. a guide bar; 528. a second locking member; 531. a clamping groove; 532. a transfer block; 533. adjusting the bolt; 534. a connecting rod; 561. an X-direction fine adjustment handle; 562. y left fine adjustment handle; 563. y right fine adjustment handle;

60. a jig.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 to 9, the present invention provides a screen printing machine, which is mainly used for printing permanent magnetic products, such as characters on magnets, and comprises a frame, wherein a printing platform 10, a feeding device 20 and a discharging device 30 are arranged on the frame, the feeding device 20 and the discharging device 30 are positioned at two sides of the printing platform 10, a jig 60 or a tray for placing products to be printed is arranged on the printing platform 10, a portal 50 is arranged on the printing platform 10, an upper beam of the portal 50 is movably connected with a printing head 58, screen arms for fixing a screen frame are movably connected at two sides of the portal 50, and the printing head 58 scrapes on the screen frame through a scraper thereof to print the characters on the products to be printed.

Printing platform 10 is equipped with the synchronous conveyor of X to, after tool 60 exports from feed arrangement 20, carries tool 60 to the printing district from the lateral part by synchronous belt conveyor, and after the printing was accomplished, synchronous belt conveyor carries tool 60 to another lateral part from the printing district, then sends out the product to next process by discharging device 30.

A guide frame 14 is arranged between the printing platform 10 and the feeding device 20, so that the position accuracy of the feeding device entering the printing platform 10 is guaranteed.

Synchronous conveying mechanism is hold-in range conveying mechanism, and hold-in range conveying mechanism has the lift adjustment structure, is equipped with the straight line slot that is used for dodging hold-in range 15 on printing platform 10 for hold-in range 15 raises when carrying tool 60, and hold-in range 15 descends when the product reachs preset position, makes tool 60 arrange printing platform 10's upper surface in, and after the printing was accomplished, hold-in range 15 rose, carries tool 60 to discharging device 30.

The synchronous belt conveying mechanism comprises a servo motor and a synchronous belt power structure, and the synchronous belt 15 is a clown-shaped pattern synchronous belt. The lifting adjusting structure comprises a group of lifting cylinders.

In one embodiment of the present invention, two synchronous belts 15 are provided, respectively for dragging the bottom edges of the two sides of the jig 60, and two parallel front linear grooves 11 and rear linear grooves 12 are correspondingly provided.

It is contemplated that the synchronous conveyor may also be a synchronous chain conveyor.

In order to ensure the stability during printing, a positioning mechanism is disposed on the printing platform 10 for precisely positioning the jig 60.

The positioning mechanism comprises a positioning rectangular groove arranged between a front straight line groove 11 and a rear straight line groove 12 and used for placing a jig 60.

Furthermore, the positioning device also comprises Y-direction sliding chutes which are arranged at two sides of the linear groove and are communicated with the linear groove, and X-direction sliding chutes which are arranged at the left side and the right side of the positioning rectangular groove;

preferably, the Y-direction sliding groove is perpendicular to the linear groove, and the X-direction sliding groove is parallel to the linear groove.

The X-direction chute and the Y-direction chute are movably provided with positioning heads, and the positioning heads clamp and position the jig 60 by moving in the chutes.

In order to reduce the impact during clamping and positioning, the positioning head is a linear bearing and can rotate during the impact, the direct impact force is converted into the rotation of the linear bearing, the rigid impact is reduced, and the safety of the positioning mechanism and the jig 60 is ensured.

In one embodiment of the utility model, the positioning head is driven to move by the air cylinder, the positioning mode of the positioning mechanism adopts five-point central positioning of the air cylinder, the five positioning points can be independently adjusted, and the front positioning air cylinder and the right positioning air cylinder are provided with pressure regulating valves for adjusting the pressure.

Preferably, the cylinder is a sliding table cylinder with an oil pressure buffer, and has the advantage of gentle positioning.

The positioning head comprises a rear left positioning head 131 and a rear right positioning head 132 which are positioned on the outer side of the rear straight line groove 12, a left positioning head 133 and a right positioning head 134 which are positioned between the front straight line groove 11 and the rear straight line groove 12, and a front positioning head 135 which is positioned on the outer side of the front straight line groove 11, wherein the rear left positioning head 131, the rear right positioning head 132 and the left positioning head 133 are controlled by the same electromagnetic valve and move synchronously along the corresponding sliding grooves, and the front positioning head 135 and the right positioning head 134 are controlled by another electromagnetic valve and move synchronously along the corresponding sliding grooves. During positioning, the rear left positioning head 131, the rear right positioning head 132 and the left positioning head 133 act first, and the front positioning head 135 and the right positioning head 134 act later.

Because the front positioning cylinder and the right positioning cylinder are provided with pressure regulating valves capable of self-defining pressure regulation, the positioning impact force can be reduced, and the rigid collision is reduced by the rear action of the front positioning head 135 and the right positioning head 134.

The printing platform 10 is provided with a photoelectric correlation sensor for detecting the entrance and exit of the jig 60, so that the positioning head can perform related actions at preset time and position.

When a product is conveyed, the air cylinder is in a lifting state, and the conveying surface of the synchronous belt 15 is higher than the positioning head; when the product is not conveyed, the air cylinder is in a descending state, and the conveying surface of the synchronous belt 15 is lower than the upper surface of the printing platform 12.

For increasing the positioning effect, the rectangular groove in location of printing platform 10 is equipped with vacuum adsorption gas pocket 16, because this structure of induced drafting, after the location was accomplished, printing platform 10 induced drafts then makes tool 60 more stable.

Further, the printing platform 10 is further provided with a magnetic element, which is attracted to the jig 60 by magnetic force.

The drive mechanism for the printer head 58 includes a head lift servo motor, a ball screw mechanism and dual rail guides. The printing screen distance is convenient to adjust, the lifting speed is high, and the precision is high.

The portal 50 is movably connected with the net arm by a guide rail structure and can be fixed in position by a locking piece.

As shown in fig. 7, the screen arm is divided into a left screen arm and a right screen arm, which respectively clamp the left and right sides of the screen frame 40, and the screen frame 40 is manually adjusted to a rough initial position and then adjusted to a position completely coinciding with the printed pattern by the screen frame fine adjustment handle.

As shown in fig. 8, the fine adjustment handle of the screen frame includes an X-direction fine adjustment handle 561 and two Y-direction fine adjustment handles, the Y-direction fine adjustment handle includes a Y-direction left fine adjustment handle 562 and a Y-direction right fine adjustment handle 563, and each group of fine adjustment handles is provided with a guide rail guide and a spring pre-tightening eliminating gap. The three handles are independently adjusted and then locked, and are not affected mutually. The adjustment of front, back, left and right and angle can be realized.

Since the left and right net arms have substantially the same structure, the following description will be made in detail by taking only the left net arm as an example.

As shown in fig. 7, the net arm includes a holding portion 53 for holding the net frame 40, an adjusting portion 52 connected to the holding portion 53, and a hanging portion 51 connected to the adjusting portion 52 and hung on the gantry 50.

As shown in fig. 7 and 9, the door 50 is provided with an upper rail 55, a lower rail 54 and a T-shaped groove 57, the hanging part 51 includes an upper slider 511 and a lower slider 512 respectively hung on the upper rail 55 and the lower rail 54, and the hanging part 51 can horizontally move along the upper rail 55 and the lower rail 54. The first locking piece 513 connected with the T-shaped groove 57 is arranged, after a preset position is selected, the net arm can be locked on the T-shaped groove 57 through the first locking piece 513, and an X-direction micro-motion adjusting mechanism is arranged between the door frame 50 and the T-shaped groove 57.

The adjusting part 52 comprises a column 521 and an L-shaped sliding plate 522 of which the relative position can be adjusted along the column 521, and a sliding rail structure is arranged between the column 521 and the sliding plate 522; a second locking member 528 is arranged on the cylinder 521, and the cylinder 521 and the sliding plate 522 can be locked through the second locking member 528; a Y-direction fine adjustment mechanism is arranged between the cylinder 521 and the sliding plate 522, an adjusting shaft 524 which can adjust the distance through screw rotation is installed on the sliding plate 522, a shaft hole matched with the adjusting shaft 524 is arranged in the cylinder 521, a Y-direction fine adjustment handle 562 is connected with the adjusting shaft 524, and a pressure spring 523 is also arranged between the cylinder 521 and the sliding plate 522 and used for enhancing the hand feeling during time saving.

The sliding plate 522 is provided with a lifting adjusting mechanism, which comprises a telescopic cylinder 525 fixed on the sliding plate 522, a cross rod 526 connected with the telescopic cylinder 525, and a guide rod 527 penetrating through the sliding plate 522 and connected with the clamping part 53.

The clamping portion 53 includes a U-shaped clamping groove 531 and an adapting block 532 disposed outside the clamping groove 531, an adjusting bolt 533 for screwing the clamping frame 40 is further disposed on the upper portion of the clamping groove 531, and a position fine-adjustment mechanism is disposed in the adapting block 532.

The guide rod 527 is connected with the two adapter blocks 532, and a connecting rod 534 for improving the connection stability is further arranged between the two adapter blocks 532.

The first locking member 513 and the second locking member 528 are bolts provided with handles for facilitating the screwing.

It can be seen that the screen frame 40 can be locked in the clamping groove 531 by the adjusting bolt 533, and the up-down position of the screen frame 40 can be adjusted by the lifting adjusting mechanism composed of the telescopic cylinder 525, the cross bar 526 and the guide rod 527; the front and back positions of the screen frame 40 can be adjusted through the sliding rail structure between the column 521 and the sliding plate 522, and can be locked through the second locking member 528; the left and right positions of the net frame 40 can be adjusted by the rail structure between the hanging part 51 and the door frame 50, and can be locked by the first locking part 513.

As shown in fig. 1, 4, 5 and 6, the feeding device 20 and the discharging device 30 respectively include conveying belts arranged at intervals, the conveying belts are used for conveying materials along the Y direction, a roller 222 for conveying materials along the X direction is arranged between the conveying belts, a jacking mechanism 23 for driving the roller 222 to move along the Z direction is arranged below the roller 222, and when the conveying belts convey materials, the conveying surface of the roller 222 is lower than the conveying belts; when it is desired to feed the roller 222, the roller 222 is raised and the conveying surface of the roller 222 is raised above the conveyor belt. Wherein, the conveyer belt is preferably the circular belt, and climbing mechanism 23 is preferably the cylinder as the power supply.

The Y-direction driving mechanism 21 of the conveying belt comprises rotating shafts which are arranged in pairs and in parallel, guide grooves are arranged on the rotating shafts at intervals, the conveying belt is installed in the guide grooves which are arranged oppositely, and the guide grooves are fixed on the rotating shafts in a sleeving mode. Wherein, the guide way is UPE material.

The circumferential driving mechanism 22 of the roller 222 comprises a bracket 221 and a bearing arranged in the side wall of the bracket 221, an inner shaft is arranged in the roller 222, the shaft end of the roller 222 is connected in the opposite bearing, and the jacking mechanism 23 is arranged at the bottom of the bracket 221.

The feeding device 20 further comprises a positioning blocking frame 223 for positioning the material, and the positioning blocking frame 223 is installed on the bracket 221.

In order to generate a certain pre-tension force on the conveying belt, prevent the conveying belt from slipping during transmission and control deflection so as to reduce conveying resistance, a tensioning mechanism 31 for tensioning the conveying belt is further arranged.

The output port of the feeding device is provided with a sensor for detecting the position state of the material.

The workflow sequence is as follows:

the product or material to be printed is first conveyed by the conveying belt of the feeding device 20 and reaches the position where the positioning blocking frame 223 is located. The roller 222 rises, the product is supported by the roller 222, the roller 222 rotates, the product falls and is conveyed to a printing section of the printing platform 10 and is connected with the rising synchronous belt 15, the product is conveyed to a printing area of the printing platform 10 through the synchronous belt 15, the product is positioned, the printing head 58 falls and then prints, after printing is completed, the product is conveyed to a discharging section through the synchronous belt 15 and is connected with the rising roller 222 in the discharging device 30, and the product is conveyed to a position through the roller 222 and then falls. Finally, the material is conveyed to the next working procedure by the conveying belt.

According to the screen printing machine, the screen frame can move in the X direction through the hanging part movably hung on the portal frame, the screen frame can move in the Z direction through the lifting adjusting mechanism, the screen frame can move in the Y direction through the sliding rail structure, fine adjustment can be performed through the Y-direction fine adjustment mechanism, the adjustment precision is improved, the screen frame is accurately aligned, and the printing quality is improved. Synchronous belt and feed arrangement, discharging device through the liftable plug into, rise during the transport, carry the material in batches to the printing district, descend during the printing, have printed and have risen once more and carry away, have improved transportation and printing efficiency. The force of direct collision is converted into the rotation of the linear bearing through the linear bearing when the linear bearing collides, so that the rigid impact is reduced, the safety of a positioning mechanism and a jig is ensured, and the service life of the screen printing machine is prolonged. The sliding table cylinder with the oil pressure buffer has the advantage of gentle positioning, further plays a role in buffering, and reduces rigid collision. The X-direction and Y-direction conveying through the feeding device and the discharging device realize steering, a U-shaped conveying mode is formed, the traditional linear conveying mode is changed, the length of a single linear production line is shortened, the space utilization is optimized, the space applicability is improved, and the defects caused by the single linear conveying mode are overcome.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (6)

1. A screen arm structure of a screen printing machine comprises a clamping part (53) for clamping a screen frame (40), a hanging part (51) movably hung on a portal (50), and an adjusting part (52) connected with the clamping part (53) and the hanging part (51), characterized in that the adjusting part (52) comprises a column body (521) and a sliding plate (522) which adjusts the relative position along the column body (521), a slide rail structure is arranged between the column body (521) and the sliding plate (522), a lifting adjusting mechanism connected with the clamping part (53) is arranged on the sliding plate (522), be equipped with Y to fine motion adjustment mechanism between cylinder (521) and slide (522), including connecting between slide (522) and cylinder (521) through adjusting shaft (524) of screw thread rotation regulation interval, be equipped with in cylinder (521) with adjusting shaft (524) complex shaft hole, adjusting shaft (524) are connected with the fine setting handle.

2. The screen arm structure of a screen printing machine according to claim 1, wherein a compression spring (523) for enhancing the adjustment feel is further provided between the cylinder (521) and the sliding plate (522).

3. The screen arm structure of a screen printing machine according to claim 2, wherein the lifting adjustment mechanism comprises a telescopic cylinder (525) fixed to the slide plate (522), a cross bar (526) connected to the telescopic cylinder (525), and a guide rod (527) connected to the nip portion (53) through the slide plate (522).

4. The screen arm structure of a screen printing machine according to claim 3, wherein the clamping portion (53) comprises a U-shaped clamping groove (531) and two transfer blocks (532) mounted outside the clamping groove (531), the upper portion of the clamping groove (531) is further provided with an adjusting bolt (533) for screwing the clamping screen frame (40), the guide rod (527) is connected with the transfer blocks (532), and a connecting rod (534) for increasing the connection stability is further provided between the two transfer blocks (532).

5. The screen arm structure of a screen printing machine according to claim 3, wherein the sliding plate (522) is L-shaped.

6. The screen arm structure of the screen printing machine according to any of the claims 1 to 5, wherein the gantry (50) is provided with an upper guide rail (55), a lower guide rail (54) and a T-shaped groove (57), the hanging part (51) comprises an upper sliding block (511) and a lower sliding block (512) which are respectively hung on the upper guide rail (55) and the lower guide rail (54), the hanging part (51) is provided with a first locking piece (513) connected with the T-shaped groove (57), and an X-direction fine adjustment mechanism is arranged between the gantry (50) and the T-shaped groove (57).

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