Scraping groove for gluing silk screen in silk screen printing, gluing device and automatic gluing mechanism

Abstract

The invention discloses a scraping groove, a gluing device and an automatic gluing mechanism which are used for gluing a silk screen in silk-screen printing. The scraping groove comprises a scraping groove body and a first mounting plate, the scraping groove body is provided with a groove used for accommodating photosensitive glue, the top of the groove comprises a scraping groove opening and a glue sealing opening which are in contact with a silk screen, and the scraping groove opening and the glue sealing opening are in cambered surface contact with the silk screen; the first mounting plate is connected with the scraping groove body, and when the scraping groove works, the first mounting plate is used for being mounted on an external manipulator through an adjusting mechanism so as to automatically glue the silk screen. The problems of poor stability and consistency of manual gluing can be solved, and the operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of screen printing, in particular to a scraper groove and a gluing device and an automatic gluing mechanism for gluing a screen in screen printing. Background Art

[0002] Screen printing refers to the use of a silk screen as a base, through the photosensitive plate-making method, to make a silk screen printing plate with images and texts. Among them, coating the silk screen with photosensitive glue is a key process in making silk screen printing plates. The thickness of the glue coating and whether the force is evenly applied all determine the production quality of the silk screen printing plate. However, the commonly used photosensitive glue coating process is usually that the operator holds the glue scraper in his hand and applies the photosensitive glue on the silk screen over and over again. This manual glue coating method is limited by people's proficiency and experience, and the stability and consistency of the glue coating are poor. The quality of the silk screen printing plate produced cannot reach a stable and unified standard.

[0003] It should be noted that the information disclosed in the above background technology section is only used for understanding the background of the present application, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a scraper groove and a gluing device and an automatic gluing mechanism for gluing a screen in screen printing.

[0005] The present invention adopts the following technical solution:

[0006] In a first aspect, a scraper groove for gluing a silk screen in screen printing is provided, comprising a scraper groove body and a first mounting plate; the scraper groove body has a groove for accommodating photosensitive glue, the top of the groove comprises a scraper groove opening and a sealing opening in contact with the silk screen, and the contact between the scraper groove opening and the sealing opening and the silk screen is an arc surface contact; the first mounting plate is connected to the scraper groove body, and when the scraper groove is working, the first mounting plate is used to be installed on an external robot through an adjustment mechanism so as to automatically gluing the silk screen.

[0007] In the second aspect, a gluing device for gluing a silk screen in silk screen printing is provided, which comprises an adjusting mechanism and the scraper groove described in the first aspect, the first mounting plate of the scraper groove is connected to the adjusting mechanism, the adjusting mechanism comprises a connecting part for connecting to an external robot, and the adjusting mechanism is used to adjust the contact pressure between the scraper groove body and the silk screen so that the contact pressure between the scraper groove mouth of the scraper groove and the silk screen is uniform.

[0008] In a third aspect, an automatic gluing mechanism is provided, which includes the gluing device described in the second aspect and a robot, wherein the gluing device is connected to the robot via the connecting portion of the adjusting mechanism, and the robot controls the gluing device to apply glue to the screen.

[0009] The present invention has the following beneficial effects: the present invention can improve the stability and uniformity of gluing on the silk screen, realize mechanical replacement of manual gluing, solve the problem of poor stability and consistency of manual gluing, and improve the efficiency of gluing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A three-dimensional schematic diagram of a scraper groove for gluing a screen in screen printing in a specific embodiment of the present invention in one direction;

[0011] Figure 2 It is a three-dimensional schematic diagram of another direction of a scraper groove for gluing a screen in screen printing according to a specific embodiment of the present invention;

[0012] Figure 3 A schematic side view of a scraper groove for gluing a screen in screen printing according to a specific embodiment of the present invention;

[0013] Figure 4 It is a partial schematic diagram of a scraper groove body in a scraper groove for gluing a screen in screen printing according to a specific embodiment of the present invention;

[0014] Figure 5 It is a three-dimensional schematic diagram of a gluing device for gluing a screen in screen printing according to a specific embodiment of the present invention;

[0015] Figure 6 It is an exploded schematic diagram of a gluing device for gluing a screen in screen printing according to a specific embodiment of the present invention;

[0016] Figure 7 It is a schematic diagram of a gluing device and a screen assembly for gluing a screen in screen printing according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following is a detailed description of the embodiments of the present invention. It should be emphasized that the following description is only exemplary and is not intended to limit the scope and application of the present invention. In the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0018] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for fixing as well as for coupling or communication.

[0019] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] See also Figure 1-4 The specific embodiment of the present invention provides a scraper groove for gluing a silk screen in screen printing, which includes a scraper groove body 7 and a first mounting plate 6, the scraper groove body 7 has a groove 75 for accommodating photosensitive glue, the top of the groove 75 includes a scraper groove mouth 702 and a sealing mouth 701 in contact with the silk screen, and the contact between the scraper groove mouth 702 and the sealing mouth 701 and the silk screen is an arc surface contact; the first mounting plate 6 is connected to the scraper groove body, and when the scraper groove is working, the first mounting plate 6 is used to be installed on an external robot through an adjustment mechanism so as to automatically gluing the silk screen.

[0022] In some embodiments, Figure 1-4As shown, the scraper body 7 includes a back plate 71, a bottom plate 72, a front plate 73 and two side plates 74, the front plate 73 is connected to the two sides of the bottom plate 72 and the two side plates 74, the back plate 71 is connected to the other two sides of the bottom plate 72 and the two side plates 74, the bottom plate 72 is connected to the back plate 71, the two side plates 74 and the front plate 73, so that the back plate 71, the bottom plate 72, the front plate 73 and the two side plates 74 together form a recessed recess with an open top for accommodating photosensitive adhesive. Groove 75; the length of the top edges of the two side panels 74 is greater than the length of the bottom edges of the two side panels 74, the top edges of the two side panels 74 are arc-shaped structures 705 at positions close to the top edge of the front panel 73, the arc-shaped structure 705 and the top edge of the front panel 72 are transitionally connected via a chamfered structure 703, the arc-shaped structure 705 and the chamfered structure 703 together constitute the sealing opening 701, the top edge of the front panel is a chamfered edge and serves as the scraping groove opening 702; the back panel 71 is connected to the first mounting plate 6.

[0023] In some embodiments, further Figure 3 As shown, from the side view schematic diagram of the scraper groove, the connection between the front plate 73 and the two side edges of the two side plates 74 is a first oblique line segment 707, and the top edges of the two side plates 74 include a horizontal straight line segment 704 (in other embodiments, the horizontal straight line segment 704 can also be other shapes, not limited to the horizontal straight line shape), an arc segment 7051 (the arc segment 7051 is the shape of the arc structure 705 in the side view) and a second oblique line segment 706 (the second oblique line segment 706 is the shape of the chamfered structure 703 in the side view), one end of the horizontal straight line segment 704 is connected to the back plate 71, and the other end of the horizontal straight line segment 704 is connected to one end of the second oblique line segment 706 through the arc segment 705, the arc segment 705 is tangent to the horizontal straight line segment 704 and the second oblique line segment 706, and one end of the first oblique line segment 707 is perpendicular to the other end of the second oblique line segment 706.

[0024] In the above embodiment, during the gluing process, the sealing glue opening 701 blocks the slurry in the scraper groove body 7 from overflowing, and the sealing glue opening 701 and the scraper groove opening 702 are in arc contact with the screen during the gluing process, so the pressure per unit area is small, which can reduce the glue overflow at the edge and the phenomenon of scraping the screen, making the glue scraping more uniform during the gluing process.

[0025] In some embodiments, the first mounting plate 6 has a first connecting portion 61, and the scraper groove is detachably mounted on the adjustment mechanism through the first connecting portion 61. The scraper groove is detachably mounted on the adjustment mechanism through the first mounting plate 6, which can facilitate the rapid installation and replacement of the scraper groove during automatic gluing.

[0026] Further reading Figure 5-6 The specific embodiment of the present invention also provides a gluing device for gluing a silk screen in silk screen printing, which includes an adjusting mechanism and the scraper groove, the first mounting plate 6 of the scraper groove is connected to the adjusting mechanism, the adjusting mechanism includes a connecting part 1 for connecting to an external manipulator, and the adjusting mechanism is used to adjust the contact pressure between the scraper groove body 7 and the silk screen so that the contact pressure between the scraper groove mouth 702 of the scraper groove and the silk screen is uniform.

[0027] In some embodiments:

[0028] There are two first connecting parts 61 on the first mounting plate 6 of the scraper groove, and the two first connecting parts 61 are symmetrical with respect to the center line of the scraper groove; the adjustment mechanism includes a second mounting plate 12, a third mounting plate 13, a fourth mounting plate 15, a pressure sensor 3, two positioning mechanisms, a second connecting part, a bearing 11, two thrust ball bearings 8 and a pressing amount adjustment mechanism.

[0029] The first side surface of the second mounting plate 12 is connected to the first mounting plate 6, and the second connecting portion is arranged at a position on the second mounting plate 12 corresponding to the first connecting portion 61 of the first mounting plate 6, and the first mounting plate 6 and the second mounting plate 12 are detachably connected by connecting the second connecting portion to the first connecting portion 61.

[0030] The bearing 11 passes downward from the top surface of the second mounting plate 12 through the bottom surface of the second mounting plate 12 and is connected to the top surface of the third mounting plate 13. The bearing 11 is located at the center of the second mounting plate 12 (the axis of the bearing 11 intersects and is perpendicular to the center line of the scraper groove).

[0031] The positioning mechanism is used to adjust the swing of the second mounting plate 12 around the bearing 11 to balance the pressure between the scraping groove 702 and the screen surface. The two positioning mechanisms are connected to both the third mounting plate 13 and the second mounting plate 12. The two positioning mechanisms are symmetrically arranged at positions close to the two side ends of the second mounting plate 12 relative to the center line.

[0032] The two thrust ball bearings 8 are symmetrically arranged relative to the center line, and are used to axially limit the third mounting plate 13 and the second mounting plate 12. They pass downward from the top surface of the second mounting plate 12 through the bottom surface of the second mounting plate 12 and are connected to the top surface of the third mounting plate 13. The top surface of the fourth mounting plate 15 is located below the bottom surface of the third mounting plate 13. The pressing amount adjustment mechanism is used to adjust the pressing amount of the scraping groove body 7 and the screen, and the pressing amount adjustment mechanism is connected to both the third mounting plate 13 and the fourth mounting plate 15.

[0033] The pressure sensor 3 is fixed at the center position of the side of the third mounting plate 13 (in the example, the radial direction of the bearing 11, the side center line of the third mounting plate 13 (perpendicular to the side of the third mounting plate) and the center line of the scraper groove are parallel to each other and are all in the same vertical plane).

[0034] The connection portion 1 of the adjustment mechanism for connecting with an external robot is mounted on the fourth mounting plate 15 .

[0035] In some embodiments, the first connecting portion 61 has a conical notch 601; the second connecting portion includes a bolt 9 and a bolt fixing block 10, the bolt fixing block 10 has a threaded hole, the bottom of the bolt 9 is a conical opening, and the top of the conical opening has a thread for locking with the bolt fixing block 10, the bolt 9 is screwed into the threaded hole and inserted into the conical notch 601 to detachably connect the first mounting plate 6 and the second mounting plate 12.

[0036] In some embodiments, the positioning mechanism includes a second spring 5, a spiral positioner 4 and an L-shaped fixing block 16, one end of the L-shaped fixing block 16 is connected to the third mounting plate 13, the spiral positioner 4 is connected to the L-shaped fixing block 16, one end of the second spring 5 is connected to the second side surface of the second mounting plate 12 opposite to the first side surface, the other end of the second spring 5 is connected to the spiral positioner 4, and the spiral positioner 4 is used to adjust the extension and contraction of the second spring 5 to drive the second mounting plate 12 to swing around the bearing 11; the thrust ball bearing 8 is located between the second connecting portion and the second spring 5. In the above embodiment, the spiral positioner 4 and the second spring 5 can precisely control the parallelism between the scraper groove body 7 and the wire mesh. The spiral positioner 4 can adjust the expansion and contraction amount of the second spring 5 to realize the sensitivity adjustment of the left and right swing of the second mounting plate 12. For example, when the scraper groove contacts the wire mesh during gluing, if the scraper groove mouth 702 is not level with the wire mesh surface, it will cause uneven pressure. At this time, the second spring 5 is adjusted by the spiral positioner 4 to expand and contract, driving the second mounting plate 12 to swing around the bearing 11 as the center, balancing the pressure between the scraper groove mouth 702 and the wire mesh surface, reducing the pressure difference, and making the scraper film thickness more uniform during the gluing process (i.e., controlling the extreme difference in film thickness).

[0037] In some embodiments, the second spring 5 is a compression cylindrical helical precision spring made of alloy steel, has higher hardness and fatigue resistance than ordinary springs, and its elastic coefficient is smaller than the elastic coefficient of the wire mesh.

[0038] In some embodiments, the pressing amount adjustment mechanism includes a first spring 2, a stop block 17 and two slide rail assemblies 14; the two slide rail assemblies 14 are symmetrical with respect to the side center position of the third mounting plate 13, and the slide rail assembly 14 includes a slide rail 141 and a slider 142, the slide rail 141 is installed on the top surface of the fourth mounting plate 15, and the slider 142 is connected to the slide rail 141 and connected to the bottom surface of the third mounting plate 13; the stop block 17 is connected to the fourth mounting plate 15, one end of the first spring 2 is connected to the side center of the pressure sensor 3, and the other end of the first spring 2 is connected to or in contact with the stop block 17. In the above embodiment, the amount of pressure applied between the scraper groove body 7 and the screen (the pressure applied can be detected by an external 3D line scanning device, for example) will affect the size of the gluing pressure. The first spring 2 cooperates with the slide rail assembly 14 (the slide rail assembly 14 serves as a guide mechanism for the first spring 2). If the pressure applied increases, the third mounting plate 13 moves backward, and the first spring 2 retracts to offset the trend of increasing pressure applied. If the pressure applied decreases (for example, an uneven screen frame during gluing will cause the pressure applied between the screen surface and the scraper groove 702 to decrease), the pressure between the scraper groove 702 and the screen decreases, which will cause the thickness of the gluing film to be too thick. In this case, the first spring 2 stretches to offset the trend of decreasing pressure applied, thereby improving the stability of the gluing pressure.

[0039] The pressure sensor 3 is used to monitor the pressure at the gluing position, transmit a pressure monitoring signal, and issue a system alarm when the pressure exceeds the process control range to ensure that the gluing pressure is within the process parameter range.

[0040] Through the above implementation, the center value of the thickness of the glue film can be controlled (that is, the center value of the thickness of the glue film can be managed).

[0041] In some embodiments, the first spring 2 is a compression cylindrical helical precision spring made of alloy steel, has higher hardness and fatigue resistance than ordinary springs, and its elastic coefficient is smaller than the elastic coefficient of the wire mesh.

[0042] In some embodiments, the connection portion 1 of the adjustment mechanism for connecting with an external robot is a flange.

[0043] Further reading Figure 7 The specific embodiment of the present invention also provides an automatic gluing mechanism, which includes a gluing device and a robot (not shown), wherein the gluing device is connected to the robot via the connecting portion 1 of the adjusting mechanism, and the robot controls the gluing device to apply glue to the screen 18.

[0044] In some embodiments, the robot is a six-axis robot.

[0045] In some embodiments, the working process of the automatic gluing mechanism includes the following:

[0046] 1. Preparation stage: Set the operation program of the gluing device in the six-axis manipulator, set the moving path and rotation angle, etc., and then fix the first mounting plate 6 of the scraper on the second mounting plate 12 through the bolts 9 and lock it. After the screen 18 is placed vertically and fixed by the screen frame, adjust the position of the first spring 2 and / or the second spring 5 according to the fit between the scraper body 7 and the screen 18, and then fill the groove 75 with photosensitive glue.

[0047] 2. Gluing stage:

[0048] a. According to the process requirements, the double-sided manipulator can alternately glue the front and back sides (the number of glue applications is determined by the total film thickness and the single film thickness);

[0049] b. After the screen is glued once, the film thickness is measured after drying. According to the difference between the film thickness and the set value, the contact force between the scraper body and the screen is adjusted to correct the film thickness. The contact pressure is observed and adjusted until the requirements are met;

[0050] c. During the gluing process, regularly wipe off the residual glue in the scraping notch 702 to prevent particles from causing streaks in the gluing process, and observe the residual amount in the groove 75. When the residual amount is less than 1 / 3, manually fill the glue;

[0051] d. After the final number of gluing is reached, the screen is dried and the difference between the film thickness and the required value is measured: if the film thickness is too small, the number of times of gluing and the thickness of the gluing film are determined, and the gluing, drying and testing are performed again to ensure that the gluing is completed after the film thickness meets the extreme control requirements. If the film thickness is qualified, the gluing is completed; if the film thickness is too large, it is scrapped;

[0052] 3. Final stage: collect the net and clean the scraper trough.

[0053] Through this automatic gluing operation method, the mechanical action of manual gluing is replaced, the stability of the glue thickness on the silk screen is improved, and the efficiency of the gluing operation is improved.

[0054] In the above-mentioned embodiment, automatic gluing of precision screen can be realized, overcoming the problem of poor gluing consistency caused by screen frame size tolerance, while reducing manual fatigue and reducing dependence on manual gluing skills. The automatic gluing mechanism can perform adaptive angle and step adjustment, and monitor the gluing pressure, thereby improving the stability of the gluing process, making the precision controllable and monitorable, and achieving the goal of precisely controlling the quality of the gluing film thickness.

[0055] The above content is a further detailed description of the present invention in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the protection scope of the present invention. In the description of this specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the absence of mutual contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made herein without departing from the scope of protection of the patent application.

Claims

1. A scraper for gluing a screen in screen printing, characterized in that: It includes a scraper groove body and a first mounting plate; the scraper groove body has a groove for accommodating photosensitive glue, the top of the groove includes a scraper groove opening and a glue sealing opening in contact with the screen, and the contact between the scraper groove opening and the glue sealing opening and the screen is an arc surface contact; the first mounting plate is connected to the scraper groove body, and when the scraper groove is working, the first mounting plate is used to be installed on an external robot through an adjustment mechanism to automatically glue the screen.

2. The scraper tank according to claim 1, characterized in that: The scraper body comprises a back plate, a bottom plate, a front plate and two side plates, the front plate is connected to the bottom plate and two side edges of the two side plates respectively, the back plate is connected to the bottom plate and the other two side edges of the two side plates respectively, the bottom plate is connected to the back plate, the two side plates and the front plate respectively, so that the back plate, the bottom plate, the front plate and the two side plates together form the groove with an open top; The length of the top edges of the two side panels is greater than the length of the bottom edges of the two side panels, and the top edges of the two side panels are arc-shaped structures at positions close to the top edge of the front panel, and the arc-shaped structure is transitionally connected to the top edge of the front panel via a chamfered structure, and the arc-shaped structure and the chamfered structure together constitute the sealing port, and the top edge of the front panel is a chamfered edge and serves as the scraping groove; the back panel is connected to the first mounting panel.

3. The scraper tank according to claim 1, characterized in that: The first mounting plate has a first connecting portion, through which the scraping groove is detachably mounted on the adjusting mechanism.

4. A gluing device for gluing a screen in screen printing, characterized in that: It comprises an adjusting mechanism and the scraper groove as described in any one of claims 1 to 3, wherein the first mounting plate of the scraper groove is connected to the adjusting mechanism, the adjusting mechanism comprises a connecting portion for connecting to an external manipulator, and the adjusting mechanism is used to adjust the contact pressure between the scraper groove body and the wire screen so that the contact pressure between the scraper groove mouth of the scraper groove and the wire screen is uniform.

5. The gluing device according to claim 4, characterized in that: The first mounting plate of the scraper groove has two first connecting parts, and the two first connecting parts are symmetrical with respect to the center line of the scraper groove; The adjustment mechanism includes a second mounting plate, a third mounting plate, a fourth mounting plate, a pressure sensor, two position adjustment mechanisms, a second connecting portion, a bearing, two thrust ball bearings and a press-in amount adjustment mechanism; The first side surface of the second mounting plate is connected to the first mounting plate, the second connecting portion is arranged at a position of the second mounting plate corresponding to the first connecting portion of the first mounting plate, and the first mounting plate and the second mounting plate are detachably connected by connecting the second connecting portion to the first connecting portion; The bearing passes downward from the top surface of the second mounting plate through the bottom surface of the second mounting plate and is connected to the top surface of the third mounting plate, and the bearing is located at the center of the second mounting plate; The positioning mechanism is used to adjust the swing of the second mounting plate around the bearing to balance the pressure of the scraping notch and the surface of the screen. The two positioning mechanisms are connected to the third mounting plate and the second mounting plate. The two positioning mechanisms are symmetrically arranged at positions close to the two side ends of the second mounting plate relative to the center line. The two thrust ball bearings are symmetrically arranged relative to the center line, and are used to axially limit the third mounting plate and the second mounting plate, and they pass downward from the top surface of the second mounting plate through the bottom surface of the second mounting plate and are connected to the top surface of the third mounting plate; The top surface of the fourth mounting plate is located below the bottom surface of the third mounting plate, and the pressing amount adjustment mechanism is used to adjust the pressing amount of the scraper body and the screen, and the pressing amount adjustment mechanism is connected to both the third mounting plate and the fourth mounting plate; The pressure sensor is fixed at the center position of the side of the third mounting plate; The connection portion of the adjustment mechanism for connecting with an external robot is mounted on the fourth mounting plate.

6. The gluing device according to claim 5, characterized in that: The first connecting part has a tapered notch; the second connecting part includes a bolt and a bolt fixing block, the bolt fixing block has a threaded hole, the bottom of the bolt is a tapered opening, and the top of the tapered opening has a thread, the bolt is screwed into the threaded hole and inserted into the tapered notch to detachably connect the first mounting plate and the second mounting plate.

7. The gluing device according to claim 5, characterized in that: The adjustment mechanism includes a second spring, a spiral adjuster, and an L-shaped fixing block. One end of the L-shaped fixing block is connected to the third mounting plate, the spiral positioner is connected to the L-shaped fixing block, one end of the second spring is connected to the second side surface of the second mounting plate opposite to the first side surface, and the other end of the second spring is connected to the spiral positioner, and the spiral positioner is used to adjust the expansion and contraction of the second spring to drive the second mounting plate to swing around the bearing; The thrust ball bearing is located between the second connecting portion and the second spring.

8. The gluing device according to claim 5, characterized in that: The pressing amount adjustment mechanism comprises a first spring, a stop block and two slide rail assemblies; The two slide rail assemblies are symmetrical with respect to the center position of the side surface of the third mounting plate, and the slide rail assemblies include a slide rail and a slider, the slide rail is installed on the top surface of the fourth mounting plate, and the slider is connected to the slide rail and connected to the bottom surface of the third mounting plate; The stop block is connected to the fourth mounting plate, one end of the first spring is connected to the center of the side surface of the pressure sensor, and the other end of the first spring is in contact with or connected to the stop block.

9. The gluing device according to claim 5, characterized in that: The connection part of the adjustment mechanism for connecting with an external manipulator is a flange.

10. An automatic gluing mechanism, characterized in that: It comprises the gluing device and a robot as described in any one of claims 4 to 9, wherein the gluing device is connected to the robot via the connecting portion of the adjusting mechanism, and the robot controls the gluing device to apply glue to the screen.

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