CN217944616U

CN217944616U - Screen printing angle adjustment mechanism and screen printing equipment

Info

Publication number: CN217944616U
Application number: CN202221935237.5U
Authority: CN
Inventors: 王华超; 罗文杰; 陈明金; 龚剑; 宁艳华; 高云峰
Original assignee: Shenzhen Han's Photovoltaic Equipment Co ltd; Han s Laser Technology Industry Group Co Ltd
Current assignee: Shenzhen Han's Photovoltaic Equipment Co ltd; Han s Laser Technology Industry Group Co Ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-12-02
Anticipated expiration: 2032-07-25

Abstract

The application discloses screen printing angle adjustment mechanism and screen printing equipment. The screen printing angle adjustment mechanism includes: mounting a plate; the linear motor is arranged on the mounting plate; the rotating plate is connected with the mounting plate in a sliding mode through the arc-shaped guide rail and is connected with a rotor of the linear motor through a transmission structure, and the transmission structure enables the rotating plate to rotate along the arc-shaped guide rail under the driving of the linear motor; the hanging plate is arranged at the edge of the mounting rack; the bearing supporting component is arranged on the rotating plate and matched with the hanging plate so as to support and guide the rotating plate. The application provides a screen printing angle adjustment mechanism and screen printing equipment of regulation screen printing angle that can stabilize the accuracy.

Description

Screen printing angle adjustment mechanism and screen printing equipment

Technical Field

The application relates to the technical field of screen printing, in particular to a screen printing angle adjusting mechanism and screen printing equipment.

Background

In screen printing, the angle of the screen needs to be adjusted. In the prior art, a rotary motor is generally adopted to combine with a screw nut structure as a drive, and then the linear drive of the screw nut is converted into the rotation of a silk screen by matching with a corresponding transmission structure. In the prior art, the angle adjusting mechanism has poor adjusting precision and low stability.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a screen printing angle adjusting mechanism and screen printing equipment of regulation screen angle that can be stable accurate.

To achieve the purpose, the following technical scheme is adopted in the application:

a screen printing angle adjustment mechanism comprising:

mounting a plate;

the linear motor is arranged on the mounting plate;

the rotating plate is connected with the mounting plate in a sliding mode through an arc-shaped guide rail and is connected with a rotor of the linear motor through a transmission structure, and the transmission structure can enable the rotating plate to rotate along the arc-shaped guide rail under the driving of the linear motor;

the hanging plate is arranged at the edge of the mounting rack;

the bearing support assembly is arranged on the rotating plate and matched with the hanging plate to support and guide the rotating plate.

As an alternative scheme of the screen printing angle adjusting mechanism, the edge of the mounting plate is provided with a downward flange, and the hanging plate is connected with the bottom end of the flange.

As an alternative of the screen printing angle adjusting mechanism, the mounting plate comprises a main plate and a side plate, the main plate is horizontally arranged, a screen printing opening is formed in the main plate, and the side plate is downwards arranged from the edge of the screen printing opening;

the flange includes first portion and the second portion that mutually is the contained angle, first portion reach the second portion all with the mainboard links to each other, first portion with the curb plate laminating, the second portion with the curb plate is the contained angle, first portion reach the bottom of second portion all is equipped with and is used for the installation the mounting hole of link plate.

As an alternative of the screen printing angle adjusting mechanism, the bearing support assembly is arranged on the outer side of the hanging plate and comprises an installation block and a bearing arranged on the installation block, and the bearing is abutted to the hanging plate.

As an alternative to the above screen printing angle adjustment mechanism, the screen printing angle adjustment mechanism further includes:

the screen plate frame is used for installing a screen, sliding grooves are formed in two sides of the bottom of the rotating plate, and the screen plate frame is inserted into the sliding grooves.

As an alternative to the screen printing angle adjusting mechanism described above, a handle is provided at the front end of the screen frame so that the screen frame is pulled by the handle.

As an alternative to the above screen printing angle adjustment mechanism, the transmission structure includes:

the adapter is rotatably connected with a rotor of the linear motor;

the linear sliding rail is arranged on one of the adapter piece and the rotating plate, and when the rotating plate does not rotate, the extension direction of the linear sliding rail is vertical to the driving direction of the linear motor;

and the linear sliding block is arranged on the adapter piece and the other one of the rotating plates and is matched with the linear sliding rail.

As the alternative scheme of the screen printing angle adjusting mechanism, the linear motor is arranged at the bottom of the mounting plate, the rotating plate is arranged below the linear motor, and the periphery of the mounting plate is provided with the baffle plate to shield and protect parts arranged below the mounting plate.

and the angle detection device is arranged in the circumferential direction of the mounting plate and is used for detecting the rotation angle of the rotating plate.

A screen printing apparatus includes the screen printing angle adjustment mechanism as described above.

The embodiment of the application has the advantages that: adopt linear electric motor as the driving piece, linear electric motor's removal precision is high, and stability is good, adopts linear electric motor as the drive to pass through drive mechanism with linear electric motor's linear driving power transformation for changeing the rotation back of board, the turned angle of silk screen on changeing the board is installed in the control that can be accurate, and the adjustment process is stable, and the reliability is high. Simultaneously, combine bearing supporting component to support and lead to the rotor plate, further promote rotor plate pivoted stability and accuracy, simple structure, the cost is lower.

Drawings

FIG. 1 is a schematic structural view of a screen printing angle adjusting mechanism according to an embodiment of the present application;

FIG. 2 is a schematic view of a screen printing angle adjustment mechanism with baffles removed according to an embodiment of the present application;

FIG. 3 is a schematic view of the screen printing angle adjustment mechanism of an embodiment of the present application with the mounting plate, the shutter, and the screen removed;

FIG. 4 is a schematic view of another perspective configuration of the screen printing angle adjustment mechanism of an embodiment of the present application with the mounting plate, the shield plate, and the screen removed;

FIG. 5 is a schematic view of another perspective view of the screen printing angle adjustment mechanism of an embodiment of the present application with the mounting plate, the shield plate, and the screen removed;

FIG. 6 is a schematic view of the structure of a mounting plate in an embodiment of the present application;

fig. 7 is a schematic structural view of a screen printing apparatus in an embodiment of the present application.

In the figure:

100. a screen printing angle adjusting mechanism;

110. mounting a plate; 111. hanging the plate; 112. a flange; 1121. a first portion; 1122. a second portion; 1123. mounting holes; 113. a main board; 114. a side plate; 115. carrying out silk screen printing; 116. a baffle plate; 117. an angle detection device;

120. a linear motor; 121. a guide slide rail; 122. a guide slider;

130. rotating the plate; 131. a chute; 132. a locking cylinder; 133. a stopper; 134. a through hole; 135. a microswitch;

140. a bearing support assembly; 141. a bearing; 142. mounting blocks;

150. a transmission structure; 151. an adapter; 152. a linear slide rail; 153. a linear slider; 154. a connecting plate; 155. a rotating shaft;

160. an arc-shaped guide rail; 161. an arc-shaped sliding block;

170. a screen board frame; 171. a wire mesh; 172. a handle; 173. avoiding the mouth;

200. a screen printing device;

210. a Y-direction driving member; 220. an X-direction driving member; 230. a Z-direction driving member; 240. drive arrangement is brushed to silk screen printing.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures.

In the description of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly and include, for example, fixedly connected, detachably connected, or integral to one another; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. The terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The embodiment of the application provides a screen printing angle adjustment mechanism. Referring to fig. 1 to 5, the screen printing angle adjusting mechanism 100 includes a mounting plate 110, a linear motor 120, a rotating plate 130, a hanging plate 111, and a bearing support assembly 140. The mounting plate 110 serves as a main mounting support structure of the entire screen printing angle adjustment mechanism 100. The linear motor 120 is mounted on the mounting plate 110, and particularly, the linear motor 120 may be mounted at the bottom of the mounting plate 110. The rotating plate 130 is slidably connected to the mounting plate 110 through the arc-shaped guide rail 160, the rotating plate 130 is connected to the mover of the linear motor 120 through the transmission structure 150, and the transmission structure 150 enables the rotating plate 130 to rotate along the arc-shaped guide rail 160 under the driving of the linear motor 120. Through the structural design of the transmission structure 150, when the linear motor 120 drives the transmission structure 150 and the rotating plate 130 to move linearly, the transmission structure 150 can enable the rotating plate 130 to rotate around the vertical rotating shaft under the limitation of the arc-shaped guide rail 160, so as to adjust the angle of the rotating plate 130, that is, adjust the angle of the screen 171.

Meanwhile, as shown in fig. 2, a hanging plate 111 is provided at an edge of the mounting plate 110. A bearing support assembly 140 is provided on the rotation plate 130, and the bearing support assembly 140 is engaged with the hanging plate 111 to support and guide the rotation plate 130. The bearing support assembly 140 is arranged to support the rotating plate 130, so that the rotating plate 130 can be prevented from rotating in a suspended manner, the rotating plate 130 can be better supported, and the rotating precision is higher. And bearing support assembly 140 is for other support assemblies such as slide rail, and the structure is smaller and more exquisite simple, and occupation space is little, simple to operate, and the cost is also lower.

In the embodiment of the present application, the linear motor 120 is used as a driving member to drive the rotating plate 130 to rotate, the linear motor 120 has high moving precision and good stability, and can accurately control the rotating angle of the screen 171 installed on the rotating plate 130, and is stable and reliable. Meanwhile, the bearing support assembly 140 is combined to support and guide the rotating plate 130, so that the rotating stability and accuracy of the rotating plate 130 are further improved, the structure is simple, the cost is low, and the installation is convenient.

Fig. 6 is a schematic structural diagram of a mounting plate in the embodiment of the present application. As shown in fig. 6, a downward flange 112 is provided on the edge of the mounting plate 110, and as shown in fig. 2, a hanging plate 111 is connected to the bottom end of the flange 112. Providing the flange 112 extending downward and the hanging plate 111 at the bottom end of the flange 112 allows the hanging plate 111 to be connected to the mounting plate 110, and allows sufficient space above and below the hanging plate 111 to install the bearing support assembly 140, so that the bearing support assembly 140 can be hung on the hanging plate 111, thereby supporting the rotating plate 130 by the bearing support assembly 140. Meanwhile, the flange 112 extends downward to increase the pulling strength of the flange 112 to support the rotation plate 130.

Further, referring to fig. 6, the mounting board 110 includes a main board 113 and a side board 114. The main board 113 is horizontally arranged, the screen printing opening 115 is formed in the main board 113, and the side board 114 is arranged downwards from the edge of the screen printing opening 115. The side panel 114 may be perpendicular to the main panel 113. Because the screen printing port 115 is generally rectangular, the side plates 114 may be provided with a plurality of blocks, and a plurality of side plates 114 surround a rectangular frame.

As shown in FIG. 6, flange 112 includes a first portion 1121 and a second portion 1122 that are angled with respect to each other. In one embodiment, as shown in FIG. 6, the first portion 1121 and the second portion 1122 can be perpendicular to each other such that the flange 112 has a substantially L-shaped configuration. The first portion 1121 and the second portion 1122 are both connected with the main board 113, the first portion 1121 is attached to the side board 114, the second portion 1122 forms an included angle with the side board 114, and the bottom ends of the first portion 1121 and the second portion 1122 are both provided with mounting holes 1123 for mounting the hanging board 111. The flange 112 is designed to include a first portion 1121 and a second portion 1122 which form an included angle with each other, and the bottom of the first portion 1121 and the bottom of the second portion 1122 are both provided with mounting holes 1123 to be fixedly connected with the hanging plate 111, so that not only can the connection strength between the flange 112 and the hanging plate 111 be improved, but also a clearance can be formed at the included angle between the first portion 1121 and the second portion 1122, a space is reserved for mounting the bearing 141 of the bearing support assembly 140, and the bearing 141 has a sufficient moving space. Meanwhile, as shown in fig. 2 and fig. 6, the second portion 1122 can also perform a certain limiting function to limit the bearing 141, so as to prevent the bearing 141 from moving excessively, and indirectly limit the rotating plate 130, thereby preventing the rotating plate 130 from rotating at a too large angle.

As shown in fig. 2, the bearing support assembly 140 includes an installation block 142 and a bearing 141 disposed on the installation block 142, the bearing 141 abuts against the hanging plate 111, and a bottom end of the installation block 142 is connected to the rotating plate 130, so that the rotating plate 130 is hung on the installation plate 110 through the bearing support assembly 140 and the hanging plate 111. The number of the bearings 141 may be two, the two bearings 141 are spaced apart in a vertical direction, and the hanging plate 111 is sandwiched between the two bearings 141. As shown in fig. 2, the bearing support assembly 140 is disposed on the outer side of the hanging plate 111, the side of the hanging plate 111 close to the screen printing opening 115 is the inner side, and the side far away from the screen printing opening 115 is the outer side. In the embodiment of the present application, the bearing support assembly 140 is disposed outside the hanging plate 111, and the bearing 141 is installed toward the inside of the hanging plate 111. For locating bearing support assembly 140 in the inboard of link plate 111, bearing 141 is towards the mounting means of the outside installation of link plate 111, and this application can reduce the installation degree of difficulty, stability when can promoting commentaries on classics board 130 simultaneously and rotate. As previously described, the first portion 1121 of the flange 112 is attached to the side plate 114 of the mounting plate 110. Thus, the first portion 1121 can be spaced apart from the outer side of the hanging plate 111 without interfering with the outer side of the hanging plate 111, and the bearing support assembly 140 can be mounted to the outer side of the hanging plate 111.

As shown in fig. 3, two or more sets of bearing support members 140 may be provided, so as to improve the supporting and guiding effects and to improve the rotation accuracy of the rotating plate 130. Multiple sets of bearing support assemblies 140 are spaced circumferentially along the rotor plate 130.

Referring to fig. 1, the screen printing angle adjusting mechanism 100 further includes a screen frame 170, and the screen frame 170 is used for mounting the screen 171. As shown in fig. 1, the sliding grooves 131 are disposed on two sides of the bottom of the rotating plate 130, the screen frame 170 is inserted into the sliding grooves 131, and the screen frame 170 is inserted into the rotating plate 130 through the sliding grooves 131, so that the screen frame 170 can be conveniently taken and placed, and the screen 171 on the screen frame 170 can be conveniently replaced.

As shown in fig. 3, a locking cylinder 132 is disposed on the rotating plate 130, a piston of the locking cylinder 132 faces downward, and a piston of the locking cylinder 132 is connected to a locking head (not shown), and the locking cylinder 132 can drive the locking head to move up and down. When the screen frame 170 is inserted into the sliding groove 131, the locking head extends downward to lock the screen frame 170, and the screen frame 170 is locked on the rotating plate 130. When the screen frame 170 needs to be detached, the locking head retracts upwards to unlock.

As shown in fig. 3, the front end of the screen frame 170 is provided with a handle 172 so that the screen frame 170 is pulled by the handle 172 to push the screen frame 170 into the slide groove 131 or pull it out of the slide groove 131. In the embodiment of the present application, the handle 172 is a through hole integrally formed at the front end of the screen frame 170. In other embodiments, the shape and shape of the handle 172 may be varied and is not limited thereto.

As shown in fig. 5, the bottom of the rotating plate 130 is further provided with a stopper 133, and the stopper 133 is located at the rear end of the screen frame 170. The stopper 133 is used to limit the screen frame 170 backward, and when the screen frame 170 is inserted into the sliding slot 131 and stopped by the stopper 133, it indicates that the screen frame 170 is inserted into position. The stop blocks 133 can be arranged in a plurality, and the stop effect is better. With continued reference to fig. 5, a micro switch 135 for detecting whether the screen frame 170 is in place may be further disposed at the bottom of the rotating plate 130, and when the screen frame 170 is in place, the micro switch 135 can detect the position. The microswitch 135 can signal to the device controller that the screen frame 170 is in place.

In one embodiment, as shown in fig. 5, the transmission structure 150 includes an adaptor 151, a linear slide 152 and a linear slider 153. The adaptor 151 is rotatably coupled to a mover of the linear motor 120. Specifically, as shown in fig. 3 and 4, the mover of the linear motor 120 is connected to a connecting plate 154, and as shown in fig. 5, a rotating shaft 155 is disposed on the connecting plate 154, and the adaptor 151 is rotatably connected to the rotating shaft 155. The axis of the shaft 155 extends in the vertical direction, so that the adaptor 151 can rotate around the vertical shaft with a rotational degree of freedom. The linear slide rail 152 is arranged on one of the adaptor 151 and the rotating plate 130, the linear slide block 153 is arranged on the other one of the adaptor 151 and the rotating plate 130, and the linear slide block 153 is matched with the linear slide rail 152. In the embodiment of the present application, as shown in fig. 5, the linear slide rail 152 is disposed on the rotating plate 130, and the linear slide block 153 is disposed on the adaptor 151. When the rotating plate 130 does not rotate, the extending direction of the linear slide rail 152 is perpendicular to the driving direction of the linear motor 120, so that the rotating plate 130 and the adaptor 151 have a freedom degree of moving along the extending direction of the linear slide rail 152.

In the present embodiment, the driving direction of the linear motor 120 is defined as the X direction, that is, the length direction of the rotating plate 130, or the left and right direction of the screen printing angle adjusting mechanism 100; when the rotating plate 130 is not rotated, the extending direction of the linear slide rail 152 is the Y direction, i.e. the width direction of the rotating plate 130, or the front-back direction of the screen printing angle adjusting mechanism 100.

Referring to fig. 2 and 4, the arc-shaped guide rail 160 is disposed at the bottom of the mounting plate 110, and as shown in fig. 4, the arc-shaped slider 161 is disposed at the top of the rotating plate 130 and engaged with the arc-shaped guide rail 160, so that the rotating plate 130 is slidably connected to the mounting plate 110 through the engagement of the arc-shaped slider 161 and the arc-shaped guide rail 160.

When the linear motor 120 is operated, under the driving of the linear motor 120 in the X direction and under the limitation of the arc-shaped guide rail 160, at the same time, since the adaptor 151 can rotate around the rotating shaft 155, and the rotating plate 130 can slide along the linear slide rail 152 relative to the adaptor 151, the rotating plate 130 can rotate under the driving of the linear motor 120 and a series of transmissions, thereby realizing the adjustment of the angle.

Referring to fig. 5, the rear end of the screen frame 170 may further be provided with an escape opening 173 for escaping the transmission structure 150.

In one embodiment, in order to improve the operation stability of the mover of the linear motor 120, as shown in fig. 4, the mover of the linear motor 120 is coupled to the mounting plate 110 through a guide rail 121 and a guide slider 122. As shown in fig. 4, a guide slider 122 is connected to the mover of the linear motor 120, and the guide slider 122 moves in synchronization with the mover of the linear motor 120. The guide rail 121 is disposed on the mounting plate 110, and the guide slider 122 is engaged with the guide rail 121. Thus, when the mover of the linear motor 120 moves linearly, the guide and stabilization can be achieved through the cooperation of the guide slide rail 121 and the guide slider 122, so that the whole driving and transmission process from the mover of the linear motor 120 to the rotating plate 130 is more stable, and the precision is improved. Specifically, as shown in fig. 3 and 4, the connection plate 154 disposed on the mover of the linear motor 120 extends rearward by a distance, that is, the connection plate 154 is wider than the linear motor 120, the connection plate 154 extends from the rear end of the linear motor 120, the guide slider 122 is disposed on the connection plate 154, and the guide rail 121 is disposed at the bottom of the mounting plate 110, so that the guide slider 122 is engaged with the guide rail 121.

Referring to fig. 2 to 5, the linear motor 120 is mounted at the bottom of the mounting plate 110, and a main body of the linear motor 120 (i.e., a stator of the linear motor 120) is fixedly connected to the mounting plate 110. The mover of the linear motor 120 is directed downward. The rotation plate 130 is positioned below the linear motor 120. As shown in fig. 5, a through hole 134 is formed in the rotating plate 130, and the rotating shaft 155 and the adaptor 151 pass through the through hole 134 in the rotating plate 130 and pass from the upper side of the rotating plate 130 to the lower side of the rotating plate 130 to be connected with the rotating plate 130. The linear slide 152 is disposed at the bottom of the rotating plate 130. The above structure enables the rotating plate 130 and the entire transmission structure 150 to be located below the mounting plate 110, as shown in fig. 1, which not only facilitates the arrangement of the whole structure, but also is more beautiful. Meanwhile, as shown in fig. 1, a baffle 116 may be disposed at the periphery of the mounting plate 110, and the baffle 116 may shield and protect the components mounted below the mounting plate 110, so as to prevent the components from being exposed.

As shown in fig. 2, the screen printing angle adjusting mechanism 100 in the embodiment of the present application further includes an angle detecting device 117. The angle detecting means 117 is disposed in a circumferential direction of the mounting plate 110, and detects a rotation angle of the rotation plate 130. The angle detection device 117 can directly detect the arc length of the rotation of the rotating plate 130, and convert the arc length into a rotation angle through calculation. The rotation angle of the rotation plate 130 can be more precisely controlled by providing the angle detection means 117.

The embodiment of the application also provides screen printing equipment. As shown in fig. 7, the screen printing apparatus 200 includes the screen printing angle adjustment mechanism 100 described above. Since the screen printing apparatus 200 of the embodiment of the present application includes the screen printing angle adjustment mechanism 100, the screen printing angle adjustment mechanism 100 at least has the beneficial effects, which are not described herein again.

As shown in fig. 7, the screen printing apparatus 200 further includes a Y-direction driving member 210, an X-direction driving member 220, and a Z-direction driving member 230, the X-direction driving member 220 being connected to an output end of the Y-direction driving member 210, the Z-direction driving member 230 being connected to an output end of the X-direction driving member 220, and the screen printing angle adjusting mechanism 100 being connected to the Z-direction driving member 230. The screen printing angle adjustment mechanism 100 is driven by the Y-direction driver 210, the X-direction driver 220, and the Z-direction driver 230 to move in the Y-direction, the X-direction, and the Z-direction, respectively. As shown in fig. 7, there are two Z-direction drivers 230, and the two Z-direction drivers 230 are connected to the left and right ends of the screen printing angle adjustment mechanism 100, respectively. Specifically, referring to fig. 1 and 7, the left and right ends of the mounting plate 110 of the screen printing angle adjustment mechanism 100 are connected to two Z-drivers 230.

As shown in fig. 7, the screen printing apparatus 200 further includes a screen printing head driving device 240. A screen printing brush head driving device 240 may be disposed on the mounting plate 110, and the screen printing brush head driving device 240 is configured to drive a screen printing brush head (not shown in the figure) to move for performing a screen printing operation.

It should be understood that the above examples are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the present application. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A screen printing angle adjustment mechanism, comprising:

mounting a plate;

the linear motor is arranged on the mounting plate;

the hanging plate is arranged at the edge of the mounting plate;

2. The screen printing angle adjustment mechanism of claim 1, wherein the edge of the mounting plate is provided with a downward flange, and the hanging plate is connected with a bottom end of the flange.

3. The screen printing angle adjusting mechanism of claim 2, wherein the mounting plate comprises a main plate and a side plate, the main plate is horizontally arranged, a screen printing opening is formed in the main plate, and the side plate is downwards arranged from the edge of the screen printing opening;

4. The screen printing angle adjusting mechanism of claim 3, wherein the bearing support assembly is arranged outside the hanging plate, the bearing support assembly comprises an installation block and a bearing arranged on the installation block, and the bearing is abutted against the hanging plate.

5. The screen printing angle adjustment mechanism according to claim 1, further comprising:

6. The screen printing angle adjustment mechanism according to claim 5, wherein a handle is provided at a front end of the screen frame so that the screen frame is pulled by the handle.

7. The screen printing angle adjustment mechanism of claim 1, wherein the transmission structure comprises:

the adapter is rotatably connected with a rotor of the linear motor;

8. The screen printing angle adjusting mechanism of claim 1, wherein the linear motor is arranged at the bottom of the mounting plate, the rotating plate is arranged below the linear motor, and a baffle is arranged at the periphery of the mounting plate to shield and protect parts arranged below the mounting plate.

9. The screen printing angle adjustment mechanism according to any one of claims 1 to 8, further comprising:

the angle detection device is arranged in the circumferential direction of the mounting plate and used for detecting the rotation angle of the rotating plate.

10. A screen printing apparatus characterized by comprising the screen printing angle adjustment mechanism according to any one of claims 1 to 9.