Printing ink particle screening device for circuit board printing and with screen convenient to replace

Abstract

The utility model provides a circuit board printing ink particle screening device with a screen convenient to replace, which belongs to the technical field of ink particle screening and comprises a screening cylinder, a cover plate is rotatably arranged above the right side surface of the screening cylinder through a hinge, and a discharge pipe is arranged at the bottom of the right side of the screening cylinder in a penetrating manner. A deslagging pipe is rotationally arranged at the bottom of the center of the screening cylinder through a bearing, an outer threaded pipe is in threaded connection with the top of the inner side of the deslagging pipe, a deslagging valve is installed below the outer side of the deslagging pipe, and a screen is welded to the top of the outer threaded pipe; due to the arrangement of the external threaded pipe and the screen, when the screen needs to be taken out from a body, the cover plate is opened, the slag discharging pipe is fixed, then the screen is rotated, the screen drives the external threaded pipe to move along the threads of the slag discharging pipe, the screen and the external threaded pipe are taken out from the slag discharging pipe, and the screen is convenient to clean and replace; and the external thread pipe at the bottom of the screen is in threaded connection with the slag discharge pipe, so that the operation is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of ink particle screening technology, and in particular to an ink particle screening device for circuit board printing that facilitates screen replacement. Background Technology

[0002] Ink is an important material used in printing. It is used to represent patterns and text on a substrate through printing or inkjet printing. Ink is made up of a mixture of binder (resin), pigment, filler, additives and solvent.

[0003] During the production of ink, it is necessary to screen the uncrushed particulate matter in the ink, so a screening device is required. The screen of the current ink particle screening device is fixed inside the device. When the screen needs to be replaced or cleaned, it is difficult to remove the screen for replacement or cleaning.

[0004] For example, in the prior art, the patent with authorization announcement number CN217069618U discloses an ink particle screening device for circuit board printing. This ink particle screening device for circuit board printing, by setting a limiting component, when it is necessary to disassemble the screen for cleaning or replacement, the door is opened, the square handle is pulled to the right, the square handle drives the limiting rod to move to the right until the limiting rod leaves the inside of the limiting groove, so that the connecting rod loses the limit, and then the connecting rod can be pulled up and away from the inside of the limiting seat, thereby removing the screen, so as to facilitate its disassembly for replacement or cleaning.

[0005] While this device facilitates sieving, during the screening of ink particles, the ink's viscosity and strong adhesion cause impurities to be discharged from the discharge pipe along with the ink, affecting the normal sieving of particles. Therefore, a PCB printing ink particle sieving device with easily replaceable screens is designed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to solve the problems existing in the background art mentioned above, and to propose an ink particle sieving device for circuit board printing that facilitates screen replacement.

[0007] The technical problem to be solved by this utility model is to provide an ink particle screening device for circuit board printing that facilitates screen replacement, thereby solving the problem that in the prior art ink particle screening device, ink and particles are discharged together from the discharge pipe when screening ink.

[0008] This utility model provides a screen-replaceable ink particle screening device for circuit board printing, including a screening cylinder, a cover plate, a discharge pipe, a slag discharge pipe, an external threaded pipe, and a screen. The cover plate is rotatably mounted on the upper right side surface of the screening cylinder via a hinge. The discharge pipe is penetrating through the bottom right side of the screening cylinder. The slag discharge pipe is rotatably mounted on the bottom center of the screening cylinder via a bearing. The top inner side of the slag discharge pipe is threadedly connected to an external threaded pipe. A slag discharge valve is installed on the lower outer side of the slag discharge pipe. The screen is welded to the top of the external threaded pipe. A drive assembly for rotating the slag discharge pipe is installed at the bottom of the screening cylinder.

[0009] Preferably, the screen is funnel-shaped with a smaller diameter at the bottom than at the top, and the bottom diameter of the screen is equal to the diameter of the externally threaded pipe.

[0010] Preferably, the drive assembly includes a drive motor fixed to the bottom surface of the screening cylinder and a driven pulley fixed below the outer surface of the slag discharge pipe. The output end of the drive motor is equipped with a drive pulley, and a transmission belt is sleeved between the drive pulley and the driven pulley.

[0011] Preferably, a fixing ring is fixedly provided above the outer surface of the externally threaded tube, an annular groove is provided in the center of the bottom surface of the fixing ring, multiple springs are fixedly provided at the top of the annular groove, and a sealing rubber ring is fixedly provided at the bottom of the springs.

[0012] Preferably, when the spring is in its naturally extended state, the bottom of the rubber ring extends out of the annular groove, and when the spring is in its maximum compressed state, the rubber ring is completely embedded in the annular groove.

[0013] Preferably, when the externally threaded pipe is fully connected to the slag discharge pipe, both the fixing ring and the rubber ring are attached to the upper surface of the slag discharge pipe.

[0014] Preferably, an anti-clogging component is installed on the inner side of the slag discharge pipe. The anti-clogging component includes a rotating rod, a spiral blade, a sealed bearing, and a connecting rod. The spiral blade is fixedly installed below the outer surface of the rotating rod, and a sealed bearing is installed at the bottom of the rotating rod. Connecting rods are fixedly installed at both ends of the sealed bearing, and the connecting rods are fixedly installed on the inner surface of the slag discharge pipe.

[0015] Preferably, the diameter of the helical blade is equal to the inner diameter of the externally threaded pipe, and the top horizontal height of the helical blade is equal to the top horizontal height of the externally threaded pipe.

[0016] Preferably, the top horizontal height of the rotating rod is equal to the top horizontal height of the screen.

[0017] Preferably, when the cover plate is placed over the screening cylinder, it can completely seal the upper opening of the screening cylinder, and a handle is welded to the center of the upper surface of the cover plate.

[0018] Preferably, a handle is welded to the center of the upper surface of the cover plate, and a feed hopper is provided through the left side of the upper surface of the cover plate, with the feed hopper facing the upper opening of the screen.

[0019] Compared with the prior art, this utility model has at least the following beneficial effects:

[0020] 1. This utility model features an externally threaded pipe and a screen. When the screen needs to be removed from the body, the cover plate is opened and the slag discharge pipe is fixed. Then, the screen is rotated, and the screen drives the externally threaded pipe to move along the threads of the slag discharge pipe. The screen and the externally threaded pipe can be removed from the slag discharge pipe, making it convenient for cleaning and replacing the screen. When installing the screen, simply connect the externally threaded pipe at the bottom of the screen to the slag discharge pipe. The operation is simple and convenient.

[0021] 2. This utility model, by incorporating a driving component, closes the slag discharge valve during the screening of particulate matter in the ink to prevent ink from flowing out of the slag discharge pipe. The driving component then drives the slag discharge pipe to rotate, which in turn rotates the external threaded pipe and the screen. Under the centrifugal force of the rotating screen, the ink inside the screen is thrown out and falls to the bottom of the screening cylinder, where it is discharged from the discharge pipe. Meanwhile, the particulate impurities in the ink are screened out by the screen and fall through the external threaded pipe into the slag discharge pipe for storage and collection, thus achieving the effect of screening the ink and ensuring screening efficiency.

[0022] 3. This utility model is equipped with a drive assembly. When screening ink, the drive motor is turned on to drive the active belt pulley to rotate. The active belt pulley drives the driven belt pulley and the slag discharge pipe to rotate through the transmission belt. The slag discharge pipe drives the external threaded pipe and the screen to rotate. The centrifugal force generated by the rotation screens the ink.

[0023] 4. This utility model, by setting a fixing ring, allows for the installation of the screen when the external threaded pipe is threaded onto the slag discharge pipe. The external threaded pipe is fully threaded into the slag discharge pipe, at which point the bottom surface of the fixing ring is tightly against the upper surface of the external threaded pipe, and the rubber ring is against the upper surface of the external threaded pipe, completely within the annular groove. The spring is compressed, and the spring force ensures tight contact between the rubber ring and the annular groove, achieving a sealing effect. Furthermore, the friction between the rubber ring, the fixing ring, and the upper surface of the external threaded pipe prevents relative rotation between the external threaded pipe and the slag discharge pipe during rotation, thus ensuring stability after installation.

[0024] 5. This utility model is equipped with an anti-clogging component. When it is necessary to clean the particulate impurities collected in the slag discharge pipe, open the cover plate and the slag discharge valve, and grasp the top of the rotating rod 9 to rotate the rotating rod. The rotating rod drives the spiral blade to rotate, and the spiral blade drives the particulate matter collected in the slag discharge pipe and the external threaded pipe to move downward until the particulate matter is discharged from the bottom of the slag discharge pipe, thus preventing the particulate matter from clogging the slag discharge pipe during slag discharge. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0026] Figure 1 This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0027] Figure 2 This is a three-dimensional schematic diagram of a partial structure of the present invention.

[0028] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A.

[0029] Figure 4 This is a three-dimensional structural diagram of the slag discharge pipe of this utility model.

[0030] Figure 5 This is a three-dimensional structural diagram of the anti-clogging component of this utility model.

[0031] [Figure Labels]

[0032] 1. Screening cylinder; 2. Cover plate; 3. Discharge pipe; 4. Slag discharge pipe; 401. Slag discharge valve; 402. Driven pulley; 5. External threaded pipe; 6. Screen; 7. Drive motor; 701. Drive pulley; 8. Transmission belt; 9. Rotating rod; 901. Spiral blade; 902. Sealed bearing; 903. Connecting rod. Detailed Implementation

[0033] Example:

[0034] like Figures 1-5As shown, an embodiment of this utility model provides a screen-replacing device for screening ink particles used in circuit board printing, which facilitates screen replacement. The device includes a screening cylinder 1, a cover plate 2, a discharge pipe 3, a slag discharge pipe 4, an externally threaded pipe 5, and a screen 6. The cover plate 2 is rotatably mounted on the upper right side surface of the screening cylinder 1 via a hinge. The discharge pipe 3 is penetrating the lower right side of the screening cylinder 1. The slag discharge pipe 4 is rotatably mounted on the lower center of the screening cylinder 1 via a bearing. The externally threaded pipe 5 is threadedly connected to the top inner side of the slag discharge pipe 4. A slag discharge valve 401 is installed on the lower outer side of the slag discharge pipe 4. The screen 6 is welded to the top of the externally threaded pipe 5. A drive assembly for rotating the slag discharge pipe 4 is installed at the bottom of the screening cylinder 1.

[0035] With the external threaded pipe 5 and screen 6 installed, when the screen 6 needs to be removed from the body, the cover plate 2 is opened and the slag discharge pipe 4 is fixed. Then, the screen 6 is rotated, and the screen 6 drives the external threaded pipe 5 to move along the thread of the slag discharge pipe 4. The screen 6 and the external threaded pipe 5 are removed from the slag discharge pipe 4, which is convenient for cleaning and replacement of the screen 6. When installing the screen 6, simply connect the external threaded pipe 5 at the bottom of the screen 6 to the slag discharge pipe 4. The operation is simple and convenient.

[0036] By incorporating a drive assembly, when screening particulate matter in the ink, the slag discharge valve 401 is closed to prevent ink from flowing out of the slag discharge pipe. The drive assembly then drives the slag discharge pipe 4 to rotate, which in turn drives the external threaded pipe 5 and the screen 6 to rotate. Under the centrifugal force of the rotating screen 6, the ink inside the screen 6 is thrown out and falls to the bottom of the screening cylinder 1, where it is discharged from the discharge pipe 3. Meanwhile, the particulate impurities in the ink are screened out by the screen 6 and fall through the external threaded pipe 5 into the slag discharge pipe 4 for storage and collection, thus achieving the effect of screening the ink and ensuring screening efficiency.

[0037] In this embodiment, the screen 6 is funnel-shaped with a smaller diameter at the bottom than at the top, and the bottom diameter of the screen 6 is equal to the diameter of the external threaded tube 5, which facilitates the connection between the external threaded tube 5 and the screen 6.

[0038] In this embodiment, the driving assembly includes a driving motor 7 fixed on the bottom surface of the screening cylinder 1 and a driven pulley 402 fixed below the outer surface of the slag discharge pipe 4. The output end of the driving motor 7 is equipped with a driving pulley 701, and a transmission belt 8 is sleeved between the driving pulley 701 and the driven pulley 402.

[0039] With the drive assembly in place, when the ink is being sieved, the drive motor 7 is turned on to drive the active pulley 701 to rotate. The active pulley 701 drives the driven pulley 402 and the slag discharge pipe 4 to rotate via the transmission belt 8. The slag discharge pipe 4 drives the external threaded pipe 5 and the screen 6 to rotate. The centrifugal force generated by the rotation sieves the ink.

[0040] In this embodiment, a fixing ring 501 is fixedly installed above the outer surface of the external threaded pipe 5. An annular groove 502 is opened in the center of the bottom surface of the fixing ring 501. Multiple springs 503 are fixedly installed at the top of the annular groove 502, and a sealing rubber ring 504 is fixedly installed at the bottom of the springs 503.

[0041] In this embodiment, when the spring 503 is in its naturally extended state, the bottom of the rubber ring 504 extends out of the annular groove 502, and when the spring 503 is in its maximum compressed state, the rubber ring 504 is completely embedded in the annular groove 502.

[0042] In this embodiment, when the external threaded pipe 5 is fully connected to the slag discharge pipe 4, both the fixing ring 501 and the rubber ring 504 are attached to the upper surface of the slag discharge pipe 4.

[0043] With the fixing ring 501 in place, when the screen 6 is installed on the external threaded pipe 5 threaded onto the slag discharge pipe 4, the external threaded pipe 5 is fully threaded into the slag discharge pipe 4. At this time, the bottom surface of the fixing ring 501 is in close contact with the upper surface of the external threaded pipe 5, the rubber ring 504 is in contact with the upper surface of the external threaded pipe 5, and the rubber ring 504 is completely in the annular groove 502. The spring 503 is in a compressed state. The elasticity of the spring 503 can ensure the tightness of the contact between the rubber ring 504 and the annular groove 502, achieving a sealing effect. Furthermore, the friction between the rubber ring 504, the fixing ring 501, and the upper surface of the external threaded pipe 5 can prevent relative rotation between the external threaded pipe 5 and the slag discharge pipe 4 during rotation, thus ensuring the stability after installation.

[0044] In this embodiment, an anti-clogging component is installed on the inner side of the slag discharge pipe 4. The anti-clogging component includes a rotating rod 9, a spiral blade 901, a sealing bearing 902, and a connecting rod 903. The spiral blade 901 is fixedly installed on the lower outer surface of the rotating rod 9. The sealing bearing 902 is installed at the bottom of the rotating rod 9. The connecting rod 903 is fixedly installed on both the left and right ends of the sealing bearing 902, and the connecting rod 903 is fixedly installed on the inner surface of the slag discharge pipe 4.

[0045] In this embodiment, the diameter of the helical blade 901 is equal to the inner diameter of the externally threaded pipe 5, and the top horizontal height of the helical blade 901 is equal to the top horizontal height of the externally threaded pipe 5.

[0046] In this embodiment, the top horizontal height of the rotating rod 9 is equal to the top horizontal height of the screen 6, which makes it convenient for the staff to grasp the top of the rotating rod 9 and rotate it when opening the cover plate 2.

[0047] By incorporating an anti-clogging component, when it is necessary to clean the particulate impurities collected in the slag discharge pipe 4, open the cover plate 2 and the slag discharge valve 401, grasp the top of the rotating rod 9 and rotate the rotating rod 9. The rotating rod 9 drives the spiral blade 901 to rotate, and the spiral blade 901 drives the particulate matter collected in the slag discharge pipe 4 and the external threaded pipe 5 to move downwards until the particulate matter is discharged from the bottom of the slag discharge pipe 4, preventing the particulate matter from clogging the slag discharge pipe 4 during slag discharge.

[0048] In this embodiment, a handle is welded to the center of the upper surface of the cover plate 2, which makes it easy to open the cover plate 2 by means of the handle. A feed hopper is provided through the left side of the upper surface of the cover plate 2, and the feed hopper is directly opposite the upper opening of the screen 6, which makes it easy to add the ink to be screened directly through the feed hopper without opening the cover plate 2.

[0049] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A screen-replacing device for screening ink particles used in circuit board printing, characterized in that: The screen includes a screening cylinder (1), a cover plate (2), a discharge pipe (3), a slag discharge pipe (4), an external threaded pipe (5), and a screen (6). The cover plate (2) is rotatably mounted on the right side surface of the screening cylinder (1) via a hinge. The discharge pipe (3) is rotatably mounted on the bottom right side of the screening cylinder (1). The slag discharge pipe (4) is rotatably mounted on the bottom center of the screening cylinder (1) via a bearing. The top inner side of the slag discharge pipe (4) is threadedly connected to the external threaded pipe (5). A slag discharge valve (401) is installed on the lower outer side of the slag discharge pipe (4). The top of the external threaded pipe (5) is welded with a screen (6). The bottom of the screening cylinder (1) is equipped with a drive assembly for rotating the slag discharge pipe (4).

2. The circuit board printing ink particle sieving device with easy screen replacement according to claim 1, characterized in that: The screen (6) is funnel-shaped with a smaller diameter at the bottom than at the top, and the bottom diameter of the screen (6) is equal to the diameter of the externally threaded pipe (5).

3. The circuit board printing ink particle sieving device with easy screen replacement according to claim 2, characterized in that: The drive assembly includes a drive motor (7) fixed on the bottom surface of the screening cylinder (1) and a driven pulley (402) fixed below the outer surface of the slag discharge pipe (4). The output end of the drive motor (7) is equipped with a drive pulley (701), and a transmission belt (8) is sleeved between the drive pulley (701) and the driven pulley (402).

4. The circuit board printing ink particle sieving device with easy screen replacement according to claim 3, characterized in that: A fixing ring (501) is fixedly installed above the outer surface of the external threaded tube (5). An annular groove (502) is opened in the center of the bottom surface of the fixing ring (501). Multiple springs (503) are fixedly installed at the top of the annular groove (502). A sealing rubber ring (504) is fixedly installed at the bottom of the springs (503).

5. The circuit board printing ink particle sieving device with easy screen replacement according to claim 4, characterized in that: When the spring (503) is in its natural extended state, the bottom of the rubber ring (504) extends out of the annular groove (502), and when the spring (503) is in its maximum compressed state, the rubber ring (504) is completely embedded in the annular groove (502).

6. The circuit board printing ink particle sieving device with easy screen replacement according to claim 5, characterized in that: When the external threaded pipe (5) is fully connected to the slag discharge pipe (4), the fixing ring (501) and the rubber ring (504) are both attached to the upper surface of the slag discharge pipe (4).

7. The circuit board printing ink particle sieving device with easy screen replacement according to claim 1, characterized in that: An anti-clogging component is installed on the inner side of the slag discharge pipe (4). The anti-clogging component includes a rotating rod (9), a spiral blade (901), a sealed bearing (902), and a connecting rod (903). The spiral blade (901) is fixedly installed below the outer surface of the rotating rod (9). The sealed bearing (902) is installed at the bottom of the rotating rod (9). The connecting rod (903) is fixedly installed at both ends of the sealed bearing (902), and the connecting rod (903) is fixedly installed on the inner surface of the slag discharge pipe (4).

8. The circuit board printing ink particle sieving device with easy screen replacement according to claim 7, characterized in that: The diameter of the helical blade (901) is equal to the inner diameter of the externally threaded pipe (5), and the top horizontal height of the helical blade (901) is equal to the top horizontal height of the externally threaded pipe (5).

9. The circuit board printing ink particle sieving device with easy screen replacement according to claim 8, characterized in that: The top horizontal height of the rotating rod (9) is equal to the top horizontal height of the screen (6).

10. The circuit board printing ink particle sieving device with easy screen replacement according to claim 1, characterized in that: A handle is welded to the center of the upper surface of the cover plate (2), and a feed hopper is provided through the left side of the upper surface of the cover plate (2), with the feed hopper facing the upper opening of the screen (6).

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