CN216683687U

CN216683687U - Conveying mechanism of screen printing machine

Info

Publication number: CN216683687U
Application number: CN202220116353.8U
Authority: CN
Inventors: 邓会; 刘秋兰
Original assignee: Shenzhen Chntop Screen Printing Machinery Co ltd
Current assignee: Shenzhen Chntop Screen Printing Machinery Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-06-07
Anticipated expiration: 2032-01-17

Abstract

The utility model relates to the technical field of printing equipment, and aims to solve the technical problem that the efficiency of transferring batch materials by using a manipulator of the traditional screen printing machine is low, the utility model discloses a conveying mechanism of the screen printing machine, which comprises a printing platform, a feeding device and a discharging device, wherein the feeding device and the discharging device are arranged at two ends of the printing platform; when printing, the timing belt is lowered. 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.

Description

Conveying mechanism of screen printing machine

Technical Field

The utility model relates to the technical field of printing equipment, in particular to a conveying mechanism 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 printing machine still includes a feed end and discharge end, and current screen printing machine snatchs the mode through setting up the manipulator on printing platform and transports the material, if the material is coiled in batches, however the action of manipulator can not satisfy the demand of speed, causes to transport and print inefficiency, and the manipulator is also limited by the volume size of material moreover, and the volume is too little, and the manipulator is not the optimal choice.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a conveying mechanism of a screen printing machine, which aims to solve the technical problem that the efficiency of transferring batch materials by using a manipulator of the traditional screen printing machine is low.

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

a conveying mechanism of a screen printing machine comprises a printing platform, a feeding device and a discharging device, wherein the feeding device and the discharging device are arranged at two ends of the printing platform, the printing platform is provided with an X-direction synchronous belt conveying mechanism, a synchronous belt for conveying a material tray is installed on the synchronous belt conveying mechanism, a linear groove for avoiding the synchronous belt is formed in the printing platform, the synchronous belt conveying mechanism is also provided with an adjusting structure for lifting the synchronous belt, and when the material tray is conveyed, the synchronous belt is lifted; when printing, the timing belt is lowered. 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.

Furthermore, a guide frame is arranged between the printing platform and the feeding device and used for improving the position precision of the material entering the printing platform.

Further, a sensor is arranged at an output port of the feeding device.

Further, hold-in range conveying mechanism includes servo motor and hold-in range power structure, adjust the structure including lift cylinder.

Further, feed arrangement and discharging device include the conveyer belt of interval arrangement respectively, conveyer belt is used for defeated material along Y, be equipped with between the conveyer belt and be used for along X to defeated cylinder of expecting, the below of cylinder is equipped with and is used for driving the climbing mechanism that the cylinder moved along Z to.

The conveying mechanism of the screen printing machine provided by the utility model has the following advantages:

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.

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 the web arm structure 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 described in further 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 are firstly moved, and the front positioning head 135 and the right positioning head 134 are then moved.

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 only by way of example of the left net arm.

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. A first locking member 513 is provided which is connected to the T-shaped channel 57 and by means of which first locking member 513 the net arm can be locked to the T-shaped channel 57 after a predetermined position has been selected.

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.

The clamping part comprises a U-shaped clamping groove 531 and an adapter block 532 arranged outside the clamping groove 531, the upper part of the clamping groove 531 is also provided with an adjusting bolt 533 used for screwing the clamping net frame 40, and an X-direction fine adjustment mechanism is arranged in the adapter 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 bar 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 the 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 liftable synchronous belt is connected with the feeding device and the discharging device, the synchronous belt ascends during conveying to convey materials to the printing area in batches, the synchronous belt descends during printing, the materials ascend again after printing and are conveyed out, and transferring and printing efficiency is improved. 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

1. The conveying mechanism of the screen printing machine comprises a printing platform (10), and a feeding device (20) and a discharging device (30) which are arranged at two ends of the printing platform (10), wherein the printing platform (10) is provided with an X-direction synchronous belt conveying mechanism, and is characterized in that the synchronous belt conveying mechanism is provided with a synchronous belt (15) for conveying a material tray, a linear groove for avoiding the synchronous belt (15) is formed in the printing platform (10), the synchronous belt conveying mechanism is also provided with an adjusting structure for lifting the synchronous belt (15), and when the material tray is conveyed, the synchronous belt (15) is lifted; when printing, the timing belt (15) is lowered.

2. The conveying mechanism of a screen printing machine according to claim 1, wherein a guide frame (14) is provided between the printing platform (10) and the feeding device (20) for improving the accuracy of the position of the material entering the printing platform (10).

3. The conveying mechanism of a screen printing machine according to claim 2, wherein the output of the feeding device (20) is provided with a sensor (224).

4. The conveying mechanism of the screen printing machine as claimed in claim 1, wherein the synchronous belt conveying mechanism comprises a servo motor and a synchronous belt power structure, and the adjusting structure comprises a lifting cylinder.

5. The conveying mechanism of the screen printing machine according to claim 4, wherein the feeding device (20) and the discharging device (30) respectively comprise conveying belts arranged at intervals, the conveying belts are used for conveying materials along the Y direction, a roller (222) used for conveying materials along the X direction is arranged between the conveying belts, and a jacking mechanism (23) used for driving the roller to move along the Z direction is arranged below the roller (222).