Screen printing machine and automatic ink stirring and adding structure thereof

Abstract

The utility model discloses a screen printing machine and an automatic ink stirring and adding structure thereof, which comprises a needle cylinder injector (1), the inside of a needle cylinder (1b) of the needle cylinder injector (1) is used for containing ink, a magnetic stirrer (11) is further arranged in the needle cylinder (1b), and an output port at the bottom of the needle cylinder (1b) is used for injecting the ink into an ink bin of the screen printing machine; the linear moving mechanism comprises a pressing block (3), and the pressing block (3) is located above the piston (1a) and used for linearly moving so as to push the piston (1a) to move to achieve the ink adding function; the rotating mechanism comprises a magnetic rotating wheel (9), and the magnetic rotating wheel (9) can rotate around the needle cylinder injector (1) and drives a magnetic stirrer (11) to move through magnetic force so as to achieve the ink stirring function; according to the utility model, automatic ink adding and ink stirring can be realized, and many defects of manual ink adding are overcome.

Description

Technical Field

[0001] The utility model relates to the field of screen printing machines, in particular to a screen printing machine and an automatic ink stirring and adding structure thereof. Background Art

[0002] Existing screen printing machines require manual ink addition. The disadvantages of manual ink addition are: during normal production, the screen printing machine needs to add new ink every one to two hours, which requires manual operation; since the equipment cannot define accurate warning time, ink addition will not be timely, resulting in incomplete screen printing ink and poor product quality; manual ink addition cannot accurately control the amount of addition, resulting in excessive ink loss; manual addition cannot ensure that the new and old inks are fully mixed, resulting in poor screen printing appearance; manual ink addition requires stopping the equipment and opening the screen printing machine door, which causes changes in the internal environment of the equipment, resulting in fuzzy silk, and the entry of dust particles leads to poor product screen printing and loss of yield. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a screen printing machine and an automatic ink stirring and adding structure thereof in view of the above-mentioned defects of manual ink addition in the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] On the one hand, an automatic ink stirring and adding structure is constructed, comprising:

[0006] A syringe syringe comprises a syringe and a piston inserted into the syringe from the top of the syringe. The interior of the syringe is used to hold ink and is also provided with a magnetic stirrer. The output port at the bottom of the syringe is used to inject ink into the ink tank of the screen printer.

[0007] A linear movement mechanism, comprising a pressing block, the pressing block being located above the piston and configured to move linearly to push the piston to achieve an ink filling function;

[0008] The rotating mechanism includes a magnetic wheel, which can rotate around the syringe and drive the magnetic stirrer to move through magnetic force to achieve the function of stirring ink.

[0009] In the automatic ink stirring and adding structure described in the present invention, the linear motion mechanism also includes a first motor and a screw rod; the screw rod is connected to the first motor and can rotate under the drive of the first motor; the pressing block is threadedly connected to the screw rod, and is used to move linearly as the screw rod rotates to press the piston.

[0010] The automatic ink stirring and adding structure described in the present invention also includes a slide rail and a slider for guiding the pressing block to move linearly. The extension direction of the slide rail is parallel to the length direction of the piston. The slider slides in cooperation with the slide rail, and the pressing block is fixedly mounted on the slider.

[0011] In the automatic ink stirring and adding structure described in the present invention, the rotating mechanism also includes a second motor and a driving wheel; the driving wheel is coaxially connected to the rotating shaft of the second motor to rotate under the drive of the second motor; the driving wheel directly or indirectly drives the magnetic wheel to rotate.

[0012] In the automatic ink stirring and adding structure described in the present invention, the driving wheel is engaged with the magnetic wheel, or the driving wheel drives the magnetic wheel to rotate through a synchronous belt.

[0013] In the automatic ink stirring and adding structure described in the present invention, the magnetic wheel is provided with a socket along its central axis that matches the bottom output port of the syringe, and the bottom output port of the syringe is inserted into the socket.

[0014] The automatic ink stirring and adding structure of the present invention also includes a vertically arranged side plate for mounting on a screen printing machine, a first fixing seat for mounting the first motor of the linear motion mechanism, a second fixing seat for mounting the second motor, and a third fixing seat for mounting the magnetic wheel;

[0015] The first fixing seat and the third fixing seat are fixedly mounted on the first side of the side plate, the second fixing seat is fixedly mounted on the second side of the side plate, and the first fixing seat is located above the third fixing seat.

[0016] In the automatic ink stirring and adding structure described in the present invention, the axial cross-section of the magnetic wheel is T-shaped, and the magnetic wheel includes a disc portion and a cylindrical portion. The radial dimension of the disc portion is larger than the radial dimension of the cylindrical portion, and the axial dimension of the disc portion is shorter than the axial dimension of the cylindrical portion. The socket passes through the centers of the disc portion and the cylindrical portion; the synchronous belt is sleeved on the circumferential side of the disc portion and the circumferential side of the driving wheel; the third fixed seat is provided with an upper and lower through-hole matching the cylindrical portion, the cylindrical portion is inserted into the mounting hole, and the disc portion is placed on the top of the third fixed seat.

[0017] The automatic ink stirring and adding structure described in the present invention also includes a groove limit block, which is fixedly installed on the first side of the side plate and is located between the first fixed seat and the third fixed seat. The syringe of the syringe is clamped by the groove limit block and remains vertical.

[0018] On the second aspect, a screen printing machine is constructed, which includes the automatic ink stirring and adding structure.

[0019] The screen printing machine and the automatic ink stirring and adding structure of the present invention have the following beneficial effects: the present invention uses a syringe to pre-fill ink, and when ink is needed, there is no need to manually open the ink tank to add ink. The ink adding function can be achieved by pushing the piston of the syringe through a linear moving mechanism, and the magnetic wheel of the rotating mechanism can also be driven to rotate, thereby driving the magnetic stirring bar in the syringe to move through magnetic force to achieve the ink stirring function. In this way, the present invention can cooperate with a controller to realize automatic ink adding and ink stirring, overcoming many defects of manual ink adding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only embodiments of the present invention. Those skilled in the art can obtain other drawings based on the provided drawings without inventive work.

[0021] Figure 1 This is one of the structural diagrams of the automatic stirring and adding structure of ink of the utility model;

[0022] Figure 2 This is the second structural diagram of the automatic ink stirring and adding structure of the utility model;

[0023] Figure 3 It is a cross-sectional view of the automatic ink stirring and adding structure of the utility model. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the relevant drawings. Typical embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0025] refer to Figure 1-3 , showing the automatic ink stirring and adding structure of this embodiment from different perspectives, Figure 1 It's a side view. Figure 2 It's a frontal perspective. Figure 3The automatic ink stirring and adding structure of this embodiment includes a syringe 1, a linear moving mechanism, and a rotating mechanism.

[0026] The general concept of the present invention is to utilize the syringe 1b of the syringe injector 1 to contain ink, and the syringe 1b is also provided with a magnetic stirrer 11. The bottom output port of the syringe 1b is used to inject oil into the ink reservoir of the screen printer. The pressing block 3 of the linear motion mechanism is located above the piston 1a of the syringe injector 1 and is used to point and move the piston 1a to achieve the ink filling function. The rotating mechanism includes a magnetic wheel 9, which can rotate around the syringe injector 1 and drive the magnetic stirrer 11 to move through magnetic force to achieve the ink stirring function.

[0027] Each structure is described in detail below.

[0028] The syringe 1 includes a syringe 1b and a piston 1a inserted into the syringe 1b from the top of the syringe 1b. The interior of the syringe 1b is used to hold ink and a magnetic stirrer 11 is also provided inside the syringe 1b. The output port at the bottom of the syringe 1b is used to inject ink into the ink tank of the screen printer.

[0029] The linear motion mechanism includes a first motor 2, a screw 12, a pressing block 3, a slide rail 4 for guiding the linear motion of the pressing block 3, and a slider 3. The rotation mechanism also includes a second motor 6, a driving wheel 7, and a magnetic wheel 9. The magnetic wheel 9 is entirely made of magnetic material, and the magnetic stirring bar 11 is made of stainless steel in this embodiment.

[0030] The automatic ink stirring and adding structure of this embodiment uses a side plate 13 as a main bearing member to carry various parts. When the automatic ink stirring and adding structure is assembled to a screen printing machine, the side plate 13 is installed on the ink tank of the screen printing machine.

[0031] Specifically, a first fixing seat 15 is fixedly installed at the bottom position on the first side of the side panel 13, and the first fixing seat 15 is used to install the first motor 2 of the linear motion mechanism. A third fixing seat 10 is fixedly installed at the bottom position on the first side of the side panel 13, and the third fixing seat 10 is used to install the magnetic wheel 9. A groove limit block 5 is fixedly installed on the first side of the side panel 13 roughly at the waist position, and the syringe 1b of the syringe 1 is clamped by the groove limit block 5 and remains vertical. The first fixing seat 15 is located above the third fixing seat 10, and the groove limit block 5 is located between the first fixing seat 15 and the third fixing seat 10. A second fixing seat 14 is fixedly installed at the bottom position on the second side of the side panel 13, and the second fixing seat 14 is used to install the second motor 6.

[0032] The first side of the side plate 13 is the front side, and the second side of the side plate 13 is the rear side. The groove stopper 5 is a "concave"-shaped structure, with two lugs located to the left and right of the center of the side plate 13. The syringe 1b is clamped by the two lugs of the groove stopper 5. The length direction of the piston 1a and syringe 1b is consistent with the length direction of the side plate 13.

[0033] The first fixing base 15 is a rectangular plate. Screws pass through the side plate 13 from the second side and secure it to the rear edge of the first fixing base 15. The first motor 2 is mounted on top of the first fixing base 15, and the four corners of the top of the first fixing base 15 are secured to the first motor 2 via screws. A through-hole with a diameter larger than that of the screw rod 12 is defined in the center of the first fixing base 15. The top end of the screw rod 12 passes through this through-hole and connects to the first motor 2, allowing the screw rod 12 to rotate when driven by the first motor 2.

[0034] The pressing block 3 is a rectangular block. A threaded hole extending vertically through the pressing block 3 is formed in its portion off-center to the right. The pressing block 3 is threadedly connected to the screw rod 12 through the threaded hole, thereby allowing the pressing block 3 to move linearly along the screw rod 12 as the screw rod 12 rotates. The portion of the pressing block 3 off-center to the left is located above the piston 1a and presses the piston 1a during its linear downward movement, thereby achieving the ink filling function.

[0035] The slide rail 4 extends parallel to the length of the piston 1a. It is located above the groove stopper 5 and extends vertically along the center of the side panel 13. The side panel 13 is secured to its first side with a row of screws along its length. The slider 3 is a vertically positioned flat plate with a slot defined on its rear side that slidably engages the left and right sides of the slide rail 4. The rear side of the off-center, leftward portion of the pressing block 3 is secured to the front side of the slider 3 with four screws.

[0036] The second fixing base 14 is a rectangular plate. Screws pass through the first side of the side plate 13 and secure it to the front edge of the second fixing base 14. The second motor 6 is mounted on top of the second fixing base 14 and is secured to the second motor 6 via screws. A through-hole with a diameter larger than the diameter of the second motor 6's shaft is defined in the center of the second fixing base 14. The shaft of the second motor 6 passes through this through-hole and is coaxially connected to the driving wheel 7, allowing the driving wheel 7 to rotate under the drive of the second motor 6.

[0037] The driving wheel 7 can directly or indirectly drive the magnetic wheel 9 to rotate. For example, the driving wheel 7 and the magnetic wheel 9 can be directly engaged, or the driving wheel 7 can drive the magnetic wheel 9 to rotate through a synchronous belt 8. In this embodiment, a synchronous belt 8 is used to be simultaneously covered on the driving wheel 7 and the magnetic wheel 9.

[0038] The rear side of the third fixed seat 10 is fixed to the first side of the side plate 13 at the bottom position by screws, and the magnetic wheel 9 is inserted into the top of the third fixed seat 10. Specifically, the axial cross-section of the magnetic wheel 9 is T-shaped, and the magnetic wheel 9 includes a disc portion and a cylindrical portion. The radial dimension of the disc portion is larger than the radial dimension of the cylindrical portion, and the axial dimension of the disc portion is shorter than the axial dimension of the cylindrical portion. The third fixed seat 10 is provided with a mounting hole that passes through the top and bottom to match the cylindrical portion. The cylindrical portion is inserted into the mounting hole, and the disc portion is placed on the top of the third fixed seat 10. The synchronous belt 8 is sleeved on the circumferential side of the disc portion and the circumferential side of the driving wheel 7. The side plate 13 is provided with a window that passes through the front and back at the bottom position, and the synchronous belt 8 passes through the window. Among them, the magnetic wheel 9 is provided with a socket 901 along its central axis that matches the bottom output port of the syringe 1b, that is, the socket 901 passes through the center of the disc part and the cylindrical part, and the bottom output port of the syringe 1 is inserted into the socket 901.

[0039] Based on the same concept, the present invention also claims protection for a screen printing machine, which includes the automatic ink stirring and adding structure as described above, for example, the side panel 13 can be fixed to the screen printing machine, and the bottom of the third fixing seat 10 blocks the ink tank adding port of the screen printing machine, and the socket 901 is opposite to the ink tank adding port.

[0040] In this embodiment, a controller can be configured to control the first motor 2 and the second motor 6 of this embodiment to achieve automatic ink stirring / adding functions (in fact, this can be directly controlled by the machine's own PLC motion control system). The speed of ink stirring and the frequency of ink addition can be set, and the device can accurately set the amount of ink to be added. During the ink stirring / adding process, the screen printer does not need to open the ink tank door, and the stable temperature, humidity, and cleanliness inside the screen printer are not easily damaged or changed.

[0041] The prepared ink can be introduced into the syringe 1b each time, and the magnetic stirring bar 11 can be placed into the syringe 1b at the same time. For example, the amount of ink needed within 4 hours can be introduced into the syringe 1b, and the addition time and addition amount can be set in the system to start the screen printing machine. When it is time to add ink in the production process, the system automatically performs the addition action (ink stirring / ink addition amount / addition time). The syringe injector 1 is disposable, which saves the loss of cleaning materials caused by each cleaning of the ink oil cup. Each time the syringe injector 1 is used up, it only needs to take out the magnetic stirring bar 11, and the magnetic stirring bar 11 can be recycled. After the ink adding action is completed, the system automatically starts the screen printing action, and there is no need for human intervention in the equipment operation during the process, which is truly automatic and intelligent. Experiments have found that the time for adding ink is reduced from the original 60s for manual addition to 20s, which improves production efficiency, reduces the risk of defective products, and greatly provides economic benefits.

[0042] This embodiment integrates automatic ink stirring and addition, and can be upgraded to existing screen printing equipment to achieve automatic stirring / adding ink functions. It can be used in screen printing equipment of various brands. Only 200mm*30mm of installation space is required above the screen printing machine screen, and the automatic ink stirring and adding structure is installed on the left or right side above the screen. The first motor and second motor of the automatic ink stirring and adding structure are connected to the screen printing machine PLC module. By programming the automatic ink addition action into the PLC, the automatic ink addition can be realized, thereby improving production efficiency, reducing the risk of defective products, and greatly providing economic benefits.

[0043] It is understood that the dimensions of the automatic ink stirring and adding structure of the present invention and the ink dosage can be adjusted according to actual needs. For example, the dimensions of the syringe 1 and the magnetic stirring bar 11 can be adjusted according to actual needs.

[0044] To sum up, the screen printing machine and its automatic ink stirring and adding structure of the present invention have the following beneficial effects: the present invention uses a syringe to pre-fill ink, and there is no need to manually open the ink tank to add ink when ink is needed. The ink adding function can be achieved by pushing the piston of the syringe through a linear moving mechanism, and the magnetic wheel of the rotating mechanism can also be driven to rotate, thereby driving the magnetic stirring bar in the syringe to move through magnetic force to achieve the ink stirring function. In this way, the present invention can cooperate with the controller to realize automatic ink adding and ink stirring. For example, the ink can be stirred before adding. In this way, the present invention can overcome the many defects of traditional manual ink adding.

[0045] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0047] As used in this specification, terms containing ordinal numbers such as "first" and "second" may be used to describe various components, but these components are not limited by these terms. The purpose of using these terms is only to distinguish one component from other components. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0048] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. An automatic stirring and adding structure for ink, characterized in that: include: A syringe (1) comprises a syringe (1b) and a piston (1a) inserted into the syringe (1b) from the top of the syringe (1b); the interior of the syringe (1b) is used to contain ink and a magnetic stirrer (11) is also provided inside the syringe (1b); an output port at the bottom of the syringe (1b) is used to inject ink into an ink tank of a screen printing machine; A linear movement mechanism comprises a pressing block (3), wherein the pressing block (3) is located above the piston (1a) and is used for linear movement to push the piston (1a) to move and realize an ink filling function; The rotating mechanism comprises a magnetic wheel (9), which can rotate around the syringe (1) and drive the magnetic stirring bar (11) to move through magnetic force to achieve the function of stirring ink.

2. The automatic ink stirring and adding structure according to claim 1, characterized in that: The linear motion mechanism further comprises a first motor (2) and a screw rod (12); the screw rod (12) is connected to the first motor (2) and can rotate under the drive of the first motor (2); the pressing block (3) is threadedly connected to the screw rod (12) and is used for linearly moving as the screw rod (12) rotates, thereby pressing the piston (1a).

3. The automatic ink stirring and adding structure according to claim 2, characterized in that: It also includes a slide rail (4) and a slider (3) for guiding the pressing block (3) to move linearly, the extension direction of the slide rail (4) is parallel to the length direction of the piston (1a), the slider (3) and the slide rail (4) are slidably matched, and the pressing block (3) is fixedly mounted on the slider (3).

4. The automatic ink stirring and adding structure according to claim 1, characterized in that: The rotating mechanism further comprises a second motor (6) and a driving wheel (7); the driving wheel (7) is coaxially connected to the rotating shaft of the second motor (6) so as to rotate under the drive of the second motor (6); the driving wheel (7) directly or indirectly drives the magnetic wheel (9) to rotate.

5. The automatic ink stirring and adding structure according to claim 4, characterized in that: The driving wheel (7) is engaged with the magnetic wheel (9), or the driving wheel (7) drives the magnetic wheel (9) to rotate via a synchronous belt (8).

6. The automatic ink stirring and adding structure according to claim 4, characterized in that: The magnetic wheel (9) is provided with a socket (901) along its central axis that matches the bottom output port of the syringe (1b), and the bottom output port of the syringe (1) is inserted into the socket (901).

7. The automatic ink stirring and adding structure according to claim 6, characterized in that: It also includes a vertically arranged side plate (13) for mounting on a screen printing machine, a first fixing seat (15) for mounting the first motor (2) of the linear motion mechanism, a second fixing seat (14) for mounting the second motor (6), and a third fixing seat (10) for mounting the magnetic wheel (9); The first fixing seat (15) and the third fixing seat (10) are fixedly mounted on a first side of the side plate (13), the second fixing seat (14) is fixedly mounted on a second side of the side plate (13), and the first fixing seat (15) is located above the third fixing seat (10).

8. The automatic ink stirring and adding structure according to claim 7, characterized in that: The axial cross-section of the magnetic wheel (9) is T-shaped. The magnetic wheel (9) includes a disc portion and a cylindrical portion. The radial dimension of the disc portion is larger than the radial dimension of the cylindrical portion, and the axial dimension of the disc portion is shorter than the axial dimension of the cylindrical portion. The jack (901) passes through the centers of the disc portion and the cylindrical portion. The synchronous belt (8) is sleeved on the circumference of the disc portion and the circumference of the driving wheel (7). The third fixed seat (10) is provided with a mounting hole that passes through the upper and lower parts and matches the cylindrical portion. The cylindrical portion is inserted into the mounting hole, and the disc portion is placed on the top of the third fixed seat (10).

9. The automatic ink stirring and adding structure according to claim 7, characterized in that: The invention also includes a groove limit block (5), which is fixedly mounted on the first side of the side plate (13) and located between the first fixing seat (15) and the third fixing seat (10). The syringe (1b) of the syringe (1) is clamped by the groove limit block (5) and kept vertical.

10. A screen printing machine, characterized in that: The invention comprises the automatic ink stirring and adding structure as described in any one of claims 1 to 9.

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