CN215704934U

CN215704934U - Silk screen printing equipment suitable for products of different sizes

Info

Publication number: CN215704934U
Application number: CN202123273299.2U
Authority: CN
Inventors: 蓝梓淇
Original assignee: Guangdong Green Exhibition Technology Co ltd
Current assignee: Guangdong Green Exhibition Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-02-01
Anticipated expiration: 2031-12-24

Abstract

The utility model belongs to the technical field of screen printing equipment, and discloses screen printing equipment suitable for products with different sizes, which comprises a screen printing device, a transmission device and a clamping device, wherein the transmission device is arranged below a printing mechanism of the screen printing device and transmits products to be printed, the clamping device comprises two clamping main boards which are arranged in an extending way along the transmission direction of the transmission device and two clamping side boards which are movably arranged on a single clamping main board along the transmission direction of the transmission device, the two clamping main boards are oppositely arranged at intervals and can move oppositely or back to back on the transmission device so as to clamp or release the products to be printed from the left side and the right side of the products to be printed, the two clamping side boards are oppositely arranged at intervals and can move oppositely or back to back on the clamping main boards so as to clamp or release the products to be printed from the front side and the back side of the products to be printed, therefore, the universality of the silk-screen printing equipment can be improved, and the purposes of improving the processing efficiency and reducing the labor intensity are achieved.

Description

Silk screen printing equipment suitable for products of different sizes

Technical Field

The utility model belongs to the technical field of screen printing equipment, and particularly relates to screen printing equipment suitable for products with different sizes.

Background

The screen printer is a machine for printing by screen printing plate, belonging to a kind of printing machine. To this kind of great products such as box, generally fix a position all around the box through the anchor clamps that set up on the load-bearing platform of silk screen printing machine to the silk screen printing mechanism that makes to be located the load-bearing platform top can carry out stable printing to the box. However, the fixture is fixedly mounted on the bearing platform, and can only be adapted to a box body with one size, if the box bodies with different sizes are subjected to silk-screen printing operation, the fixture needs to be replaced, so that the processing efficiency is low, and the labor intensity is high.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects or shortcomings in the prior art, the utility model provides a screen printing device suitable for products with different sizes, and aims to solve the technical problems of low processing efficiency and high labor intensity caused by the fact that a clamp on the existing screen printing machine cannot be suitable for boxes with different sizes.

In order to achieve the above object, the present invention provides a screen printing apparatus adapted to products of different sizes, wherein the screen printing apparatus adapted to products of different sizes comprises: the screen printing device, the transmission device and the clamping device; the screen printing device comprises a screen printing frame and a printing mechanism arranged on the screen printing frame; the transmission device is arranged below the printing mechanism and is used for transmitting the product to be printed; the clamping device is arranged on the transmission device and corresponds to the printing mechanism, the clamping device comprises two clamping main boards which are arranged along the extension of the transmission direction of the transmission device and two clamping side boards which are movably arranged on a single clamping main board along the transmission direction of the transmission device, the two clamping main boards are arranged at relative intervals and can move in opposite directions or move back to back on the transmission device, so that the product to be printed can be clamped or loosened from the left side and the right side of the product to be printed, the two clamping side boards on the single clamping main board are arranged at relative intervals and can move in opposite directions or move back to back on the clamping main boards, and the product to be printed can be clamped or loosened from the front side and the back side of the product to be printed.

In the embodiment of the utility model, the conveying device comprises a conveying rack and a conveying assembly which is arranged on the conveying rack and used for conveying the product to be printed, the clamping device further comprises two driving parts which are oppositely arranged on the conveying rack at intervals, and output shafts of the two driving parts are respectively connected with the two clamping main boards in a one-to-one correspondence mode.

In the embodiment of the utility model, the transmission rack comprises two installation seats which are oppositely spaced and are arranged in an extending mode along the transmission direction of the transmission assembly and a moving seat which is connected with the two installation seats and bears a driving piece, the transmission assembly comprises a plurality of rollers which are sequentially arranged between the two installation seats at intervals, the moving seat is positioned below the plurality of rollers, the clamping main board comprises a moving frame and a main board body, the moving frame is movably arranged on the moving seat and is connected with an output shaft of the driving piece, the upper end of the moving frame extends upwards from a gap between the two rollers which are adjacently arranged, the main board body is arranged at the upper end of the moving frame and is arranged in an extending mode along the transmission direction of the transmission assembly, and the two clamping side boards are movably arranged on the main board body along the transmission direction of the transmission assembly.

In the embodiment of the utility model, the inner cavity of the main board body is provided with the rotating motor and the ball screw connected with the rotating motor, the ball screw extends along the transmission direction of the conveying assembly, the inner side of the main board body is provided with the sliding opening corresponding to the ball screw, and the clamping side plate extends into the inner cavity from the sliding opening to be connected with the ball screw.

In the embodiment of the utility model, the silk-screen printing equipment suitable for products with different sizes further comprises a position detection device arranged on the clamping side plate.

In an embodiment of the present invention, the position detecting device includes a first proximity switch and a second proximity switch, the first proximity switch is disposed on the clamping side plate located at the rear end of the main board body, and the second proximity switch is disposed on the clamping side plate located at the front end of the main board body.

In the embodiment of the utility model, the silk-screen printing equipment suitable for products with different sizes further comprises a drying device, wherein the drying device is provided with a drying chamber into which the conveying device extends, so that the drying operation can be carried out on the printed products conveyed by the conveying device.

In an embodiment of the present invention, the drying apparatus includes a drying rack, a drying box disposed on the drying rack and forming a drying chamber, and a hot air assembly disposed on the drying rack and blowing hot air to the drying chamber.

In the embodiment of the utility model, the hot air assembly comprises a hot air box body, an air collecting cover, a heating pipe and an exhaust fan, the hot air box body is arranged on the drying rack, the air collecting cover is arranged on the hot air box body and communicated with the hot air box body, the heating pipe is arranged in the hot air box body and used for heating air in the hot air box body, and the exhaust fan is communicated with the hot air box body and the drying chamber and used for guiding hot air in the hot air box body to the drying chamber.

In the embodiment of the utility model, the screen printing machine frame comprises a frame body, a rotating seat and a bearing platform, wherein the rotating seat is rotatably arranged on the frame body and is used for bearing the printing mechanism, and the bearing platform is arranged on the frame body and is respectively arranged at two sides of the rotating seat together with the transmission device.

Through the technical scheme, the silk-screen printing equipment suitable for products with different sizes provided by the embodiment of the utility model has the following beneficial effects:

when the silk-screen printing equipment is used for silk-screen printing operation, a product to be printed can be directly placed on the conveying device, the conveying device conveys the product to be printed to the position corresponding to the clamping device, the two clamping main boards of the clamping device can move oppositely on the conveying device so as to clamp and position the product to be printed from the left side and the right side of the product to be printed, the two clamping side boards on a single clamping main board can move oppositely on the clamping main boards so as to clamp and position the product to be printed from the front side and the rear side of the product to be printed, so that the printing mechanism above can directly and stably print the product to be printed clamped by the clamping device, the product to be printed becomes a printed product after printing is finished, the two clamping main boards of the clamping device can move oppositely on the conveying device so as to release the product to be printed from the left side and the right side of the product to be printed, the two clamping side plates on the single clamping main plate can move back and forth on the clamping main plate so as to loosen products to be printed from the front side and the back side of the products to be printed, and when the products to be printed (such as boxes) with different sizes need to be subjected to silk-screen printing operation, the distance of the two clamping main plates moving in the opposite direction and the distance of the two clamping side plates on the single clamping main plate moving in the opposite direction are adjusted, so that the universality of the silk-screen printing equipment can be improved, and the purposes of improving the processing efficiency and reducing the labor intensity are achieved.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

fig. 1 is a schematic partial structural view of a screen printing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the transport frame, the driving member and the moving frame according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an internal structure of a motherboard body according to an embodiment of the utility model;

fig. 4 is a schematic structural diagram of a drying apparatus according to an embodiment of the present invention.

Description of the reference numerals

1-a transmission device; 11-a transport frame; 111-a mount; 112-a mobile seat; 12-a delivery assembly; 2-a clamping device; 21-clamping the main board; 211-a mobile frame; 212-a main board body; 213-a sliding port; 22-a drive member; 23-clamping the side plate; 24-a rotating electrical machine; 25-ball screw; 3-drying device; 31-drying the box body; 32-a hot air assembly; 321-a hot blast box body; 322-a wind collecting cover; 323-heating tube; 324-an exhaust fan; 5-a first proximity switch; 6-a second proximity switch; 7-product to be printed.

Detailed Description

The following detailed description of specific embodiments of the utility model refers to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory of the utility model and are not restrictive thereof.

The following describes a screen printing apparatus adapted to products of different sizes according to the present invention with reference to the accompanying drawings.

As shown in fig. 1, the present invention provides a screen printing apparatus adapted to products of different sizes, wherein the screen printing apparatus adapted to products of different sizes comprises:

the screen printing device comprises a screen printing frame and a printing mechanism arranged on the screen printing frame;

the conveying device 1 is arranged below the printing mechanism and is used for conveying the product 7 to be printed;

the clamping device 2 is arranged on the transmission device 1 and corresponds to a printing mechanism, and comprises two clamping main boards 21 arranged in an extending mode along the transmission direction of the transmission device 1 and two clamping side boards 23 movably arranged on a single clamping main board 21 along the transmission direction of the transmission device 1, wherein the two clamping main boards 21 are arranged at intervals relatively and can move oppositely or back to back on the transmission device 1, so that the product 7 to be printed can be clamped or released from the left side and the right side of the product 7 to be printed, the two clamping side boards 23 on the single clamping main board 21 are arranged at intervals relatively and can move oppositely or back to back on the clamping main board 21, and the product 7 to be printed can be clamped or released from the front side and the back side of the product 7 to be printed.

When the screen printing equipment suitable for products with different sizes is used, the product 7 to be printed can be directly placed on the transmission device 1, the transmission device 1 transmits the product 7 to be printed to the position corresponding to the clamping device 2, the two clamping main boards 21 of the clamping device 2 can move oppositely on the transmission device 1 so as to clamp and position the product 7 to be printed from the left side and the right side of the product 7 to be printed, and the two clamping side boards 23 on the single clamping main board 21 can move oppositely on the clamping main boards 21 so as to clamp and position the product 7 to be printed from the front side and the back side of the product 7 to be printed, so that the printing mechanism above can directly and stably print the product 7 to be printed, which is clamped by the clamping device 2, when the product 7 to be printed becomes a printed product after printing is finished, the two clamping main boards 21 of the clamping device 2 can move oppositely on the transmission device 1, the product 7 to be printed can be loosened from the left side and the right side of the product 7 to be printed, the two clamping side plates 23 on the single clamping main plate 21 can move back to back on the clamping main plate 21, the product 7 to be printed can be loosened from the front side and the rear side of the product 7 to be printed, and when the product 7 (such as a box) to be printed with different sizes needs to be subjected to silk-screen printing operation, the universality of the silk-screen printing equipment can be improved by adjusting the distance for the two clamping main plates 21 to move in the opposite directions and adjusting the distance for the two clamping side plates 23 on the single clamping main plate 21 to move in the opposite directions, so that the purposes of improving the processing efficiency and reducing the labor intensity are achieved.

It should be noted that, the screen printing device adapted to products with different sizes provided by the present invention is particularly suitable for larger products such as boxes, and the like, and certainly, the present invention is not limited thereto, and it would also fall within the protection scope of the present invention to apply the screen printing device adapted to products with different sizes provided by the present invention to products with other structures. Further, the left and right sides of the product 7 to be printed in the present invention refer to opposite sides disposed opposite to the two holding main plates 21, respectively, and the front and rear sides of the product 7 to be printed refer to sides disposed at opposite intervals along the conveying direction of the conveying device 1. Specifically, the number of the clamping side plates 23 of the whole screen printing device may be four, and two clamping side plates 23 are disposed on each clamping main plate 21.

Referring to fig. 1 and 2, in the embodiment of the present invention, the conveying device 1 includes a conveying frame 11 and a conveying assembly 12 disposed on the conveying frame 11 and used for conveying the products 7 to be printed, the clamping device 2 further includes two driving members 22 disposed on the conveying frame 11 at an interval, output shafts of the two driving members 22 are respectively connected to the two clamping main boards 21 in a one-to-one correspondence manner, that is, the two driving members 22 are respectively controlled to complete the opposite movement or the reverse movement of the two clamping main boards 21, so that the distance between the two clamping main boards 21 can be automatically adjusted.

In the embodiment of the present invention, the transmission rack 11 includes two installation seats 111 oppositely spaced and extending along the transmission direction of the transmission assembly 12 and a moving seat 112 connecting the two installation seats 111 and carrying the driving member 22, the transmission assembly 12 includes a plurality of rollers sequentially spaced between the two installation seats 111, the moving seat 112 is located below the plurality of rollers, the clamping main board 21 includes a moving frame 211 and a main board body 212, the moving frame 211 is movably disposed on the moving seat 112 and connected to an output shaft of the driving member 22, an upper end of the moving frame 211 protrudes upward from a gap between the two adjacently disposed rollers, the main board body 212 is disposed on an upper end of the moving frame 211 and extends along the transmission direction of the transmission assembly 12, and the two clamping side plates 23 are movably disposed on the main board body 212 along the transmission direction of the transmission assembly 12. I.e. by providing the transport assembly 12 as a plurality of rollers, the movable seat 112 and the driving member 22 can be both provided under the plurality of rollers to achieve a hidden design, and one movable seat 112 can be shared by two clamping main plates 21. Specifically, the two driving members 22 are disposed on the moving seat 112 at intervals, and the output shafts of the two driving members 22 are disposed in opposite directions, that is, the moving frames 211 of the two clamping main boards 21 connected to the output shafts of the two driving members 22 in a one-to-one correspondence are located outside the two driving members 22, so that when the output shafts of the two driving members 22 perform retraction motion, the main board bodies 212 of the two clamping main boards 21 move in opposite directions, and when the output shafts of the two driving members 22 perform extension motion, the main board bodies 212 of the two clamping main boards 21 move in opposite directions. More specifically, the driving member 22 may be a driving cylinder or a driving motor.

Referring to fig. 1 and 3, in the embodiment of the present invention, the inner cavity of the main plate body 212 is provided with the rotating motor 24 and the ball screw 25 connected to the rotating motor 24, the ball screw 25 extends along the transmission direction of the conveying assembly 12, the inner side of the main plate body 212 is provided with the sliding opening 213 corresponding to the ball screw 25, and the clamping side plate 23 extends into the inner cavity from the sliding opening 213 and is connected to the ball screw 25. The ball screw 25 can convert the rotational motion of the rotary motor 24 into the linear motion of the clamping side plate 23, so that the linear movement of the clamping side plate 23 on the main plate body 212 can be controlled. Specifically, the inner cavity of one main board body 212 is provided with two rotating motors 24 and two ball screws 25, the two rotating motors 24 and the two ball screws 25 are connected in a one-to-one correspondence manner, the two ball screws 25 are arranged side by side along the transmission direction of the conveying assembly 12, and the two clamping side plates 23 on the one main board body 212 are respectively connected with the two ball screws 25 in a one-to-one correspondence manner. It should be noted that the inner side of the main board body 212 refers to the side surface of the two main board bodies 212 opposite to each other.

In the embodiment of the present invention, the screen printing device suitable for products with different sizes further includes a position detection device disposed on the clamping side plate 23, so that the position of the product transported on the transport device 1 can be detected by the position detection device.

Referring to fig. 1 again, in the embodiment of the present invention, the position detecting device includes a first proximity switch 5 and a second proximity switch 6, the first proximity switch 5 is disposed on the clamping side plate 23 located at the rear end of the main plate body 212, and the second proximity switch 6 is disposed on the clamping side plate 23 located at the front end of the main plate body 212. It should be particularly noted that when the product sequentially flows through the rear end of the main board body 212 and the front end of the main board body 212 in the conveying device 1, that is, the product 7 to be printed enters between the two clamping main boards 21 from the rear end of the main board body 212 to be clamped and positioned, and after printing is completed, the printed product leaves between the two clamping main boards 21 from the front end of the main board body 212, the first proximity switch 5 arranged on the clamping side board 23 located at the rear end of the main board body 212 may be used to detect whether the product 7 to be printed has completely entered between the two clamping main boards 21, so that when it is determined that the product 7 to be printed has completely entered between the two clamping main boards 21, the clamping main board 21 and the clamping side board 23 may be controlled to move to clamp and position the product 7 to be printed, and at the same time, the conveying device 1 may also be controlled to stop conveying; and the second proximity switch 6 provided on the clamping side plate 23 located at the front end of the main plate body 212 can be used to detect that the printed product is sufficiently far away from between the two clamping main plates 21.

Referring to fig. 1 again, in the embodiment of the present invention, the screen printing apparatus adapted to products with different sizes further includes a drying device 3, the drying device 3 is formed with a drying chamber into which the transmission device 1 extends, so as to perform a drying operation on the printed product transmitted by the transmission device 1, so that the printed product can be continuously transmitted into the drying chamber through the transmission device 1 for performing the drying operation, thereby implementing an automatic operation of printing and drying the large product 7 to be printed, such as a box body, without manually transferring to the independent drying device 3 for performing the drying operation after the printing operation is completed.

Referring to fig. 1 and 4, in the embodiment of the present invention, the drying device 3 includes a drying rack, a drying box 31 disposed on the drying rack and forming a drying chamber, and a hot air assembly 32 disposed on the drying rack and blowing hot air to the drying chamber, so that the ink of the printed product can be dried by the hot air blown by the hot air assembly 32, and the drying is uniform. In particular, the conveyor device 1 can also be arranged protruding from the drying chamber, i.e. the dried printed product can also be conveyed directly out by the conveyor device 1. More specifically, the transfer device 1 may be sequentially spliced by a first transfer section, which is arranged corresponding to the printing mechanism and carries the clamping device 2, a second transfer section, which is arranged inside the drying chamber, and a third transfer section, which is arranged outside the drying chamber to convey the printed products that have been dried.

In the embodiment of the present invention, the hot air assembly 32 includes a hot air box 321, an air collecting cover 322, a heating pipe 323 and an exhaust fan 324, the hot air box 321 is disposed on the drying rack, the air collecting cover 322 is disposed on the hot air box 321 and can be communicated with the hot air box 321, the heating pipe 323 is disposed in the hot air box 321 and is used for heating air in the hot air box 321, and the exhaust fan 324 is communicated with the hot air box 321 and the drying chamber and is used for guiding hot air in the hot air box 321 to the drying chamber. The air outside the hot air box 321 can enter the hot air box 321 through the air collecting hood 322, and is heated by the heating pipe 323 inside the hot air box 321, and then guided into the drying chamber by the exhaust fan 324 to dry the ink of the printed product.

In the embodiment of the utility model, the screen printing frame comprises a frame body, a rotating seat and a bearing platform, wherein the rotating seat is rotatably arranged on the frame body and is used for bearing the printing mechanism, and the bearing platform is arranged on the frame body and is respectively arranged at two sides of the rotating seat together with the transmission device 1. The bearing platform can be used for manually loading the products 7 to be printed, is suitable for the processing of the products 7 to be printed in small batches, can switch the working position of the printing mechanism through the arrangement of the rotary seat, and when the products 7 to be printed are in small batches, the printing mechanism can rotate to the upper part of the bearing platform, and when the products 7 to be printed are in large batches, the printing mechanism can rotate to the upper part of the transmission device 1.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a silk screen printing equipment that is adapted to not unidimensional product which characterized in that includes:

the conveying device (1) is arranged below the printing mechanism and is used for conveying the product (7) to be printed; and

the clamping device (2) is arranged on the conveying device (1) and corresponds to the printing mechanism, and comprises two clamping main boards (21) which are arranged in an extending manner along the conveying direction of the conveying device (1) and two clamping side boards (23) which are movably arranged on a single clamping main board (21) along the conveying direction of the conveying device (1), the two clamping main boards (21) are arranged at intervals relatively and can move towards each other or back to back on the conveying device (1), so as to clamp or release the product (7) to be printed from the left side and the right side of the product (7) to be printed, two clamping side plates (23) on a single clamping main plate (21) are oppositely arranged at intervals and can move towards each other or back to back on the clamping main plate (21), so as to be able to clamp or release the product (7) to be printed from both the front and rear sides of the product (7) to be printed.

2. The screen printing device suitable for products with different sizes according to claim 1, wherein the conveying device (1) comprises a conveying frame (11) and a conveying assembly (12) arranged on the conveying frame (11) and used for conveying the products to be printed (7), the clamping device (2) further comprises two driving pieces (22) arranged on the conveying frame (11) at intervals, and output shafts of the two driving pieces (22) are respectively connected with the two clamping main boards (21) in a one-to-one correspondence manner.

3. The screen printing device for products with different sizes according to claim 2, wherein the conveying frame (11) comprises two installation bases (111) which are oppositely spaced and extend along the conveying direction of the conveying assembly (12), and a moving base (112) which connects the two installation bases (111) and carries the driving member (22), the conveying assembly (12) comprises a plurality of rollers which are sequentially spaced between the two installation bases (111), the moving base (112) is located below the plurality of rollers, the clamping main board (21) comprises a moving frame (211) and a main board body (212), the moving frame (211) is movably arranged on the moving base (112) and is connected with an output shaft of the driving member (22), the upper end of the moving frame (211) is upwards extended from the gap between the two adjacently arranged rollers, the main board body (212) is arranged at the upper end of the moving frame (211) and extends along the transmission direction of the conveying assembly (12), and the two clamping side boards (23) are movably arranged on the main board body (212) along the transmission direction of the conveying assembly (12).

4. The silk screen printing device suitable for products with different sizes according to claim 3, wherein an inner cavity of the main board body (212) is provided with a rotating motor (24) and a ball screw (25) connected with the rotating motor (24), the ball screw (25) extends along the transmission direction of the conveying assembly (12), a sliding opening (213) is formed in the inner side of the main board body (212) corresponding to the ball screw (25), and the clamping side plate (23) extends into the inner cavity from the sliding opening (213) to be connected with the ball screw (25).

5. Screen printing device adapted to products of different sizes according to claim 4, characterized in that it further comprises position detection means provided on said clamping sideboard (23).

6. The screen printing apparatus adapted to products of different sizes according to claim 5, wherein the position detection device comprises a first proximity switch (5) and a second proximity switch (6), the first proximity switch (5) is disposed on the clamping side plate (23) located at the rear end of the main plate body (212), and the second proximity switch (6) is disposed on the clamping side plate (23) located at the front end of the main plate body (212).

7. The screen printing apparatus for products of different sizes according to any one of claims 1 to 6, further comprising a drying device (3), wherein the drying device (3) is formed with a drying chamber into which the conveying device (1) extends, so as to be able to perform a drying operation on the applied products conveyed by the conveying device (1).

8. The screen printing apparatus adapted to products of different sizes according to claim 7, wherein said drying device (3) comprises a drying rack, a drying box (31) disposed on said drying rack and formed with said drying chamber, and a hot air assembly (32) disposed on said drying rack and blowing hot air to said drying chamber.

9. The screen printing device for products with different sizes according to claim 8, wherein the hot air assembly (32) comprises a hot air box body (321), an air collecting hood (322), heating pipes (323) and an exhaust fan (324), the hot air box body (321) is disposed on the drying rack, the air collecting hood (322) is disposed on the hot air box body (321) and communicated with the hot air box body (321), the heating pipes (323) are disposed in the hot air box body (321) and used for heating air in the hot air box body (321), and the exhaust fan (324) is communicated with the hot air box body (321) and the drying chamber and used for guiding hot air in the hot air box body (321) to the drying chamber.

10. Screen printing apparatus adapted to products of different sizes according to any one of claims 1 to 6, characterized in that the screen printing frame comprises a frame body, a rotary base rotatably arranged on the frame body and adapted to carry the printing mechanism, and a carrying platform arranged on the frame body and on both sides of the rotary base separately from the transport device (1).