Loading rotary table and screen printing machine

Abstract

The utility model relates to a carrying rotary table and a screen printing machine, the carrying rotary table comprises a carrying plate suitable for rotating around a transposition axis, the carrying plate is provided with a carrying surface, a first side edge and a second side edge, the carrying surface faces a working side along the transposition axis, and the first side edge and the second side edge surround the carrying surface and are back to back; the table-board paper mechanism comprises table-board paper, the table-board paper extends and winds a first side edge, a carrying surface and a second side edge, the table-board paper can move relative to the carrying plate in the winding direction, and the table-board paper is provided with a first side and a second side which are opposite in the circumferential direction of the transposition axis; the four blocking parts are used for abutting against the table board paper; the four blocking parts comprise a first blocking part connected to the first side edge and located on the first side, a second blocking part connected to the first side edge and located on the second side, a third blocking part connected to the second side edge and located on the first side, and a fourth blocking part connected to the second side edge and located on the second side. The table top paper of the object carrying rotary table is not prone to deviating, and good conveying performance is achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of tooling fixtures, and in particular to a turntable and a screen printing machine. Background Art

[0002] The turntable can be used to mount workpieces. By rotating the turntable, workpieces can be transferred between multiple stations, helping to improve production efficiency and reduce the space occupied by the production line.

[0003] In order to transfer the workpiece between the turntable and the external equipment, a table paper can be set on the loading surface of the turntable, and the movement of the table paper can be used to drive the movement of the workpiece.

[0004] The working principle of the turntable will lead to the interaction of inertia and driving force among the table paper, the loading surface and the workpiece, which will cause the movement of the workpiece relative to the workstation to deviate from its ideal state, which may lead to defective products. Utility Model Content

[0005] In view of this, it is necessary to provide a turntable and a screen printing machine to solve the problem of defective products caused by poor transmission.

[0006] An embodiment of the present disclosure provides a carrier turntable, which includes: a carrier plate suitable for rotating around a rotation axis, the carrier plate having a carrier surface, a first side and a second side, the carrier surface facing the working side along the rotation axis, the first side and the second side surrounding the carrier surface and facing each other; a table paper mechanism including table paper, the table paper extending and wrapping around the first side, the carrier surface and the second side, and the table paper capable of moving relative to the carrier plate along the winding direction, the table paper having a first side and a second side circumferentially opposite to each other along the rotation axis; and four blocking parts, the blocking parts being used to abut against the table paper, the four blocking parts including a first blocking part connected to the first side and located on the first side, a second blocking part connected to the first side and located on the second side, a third blocking part connected to the second side and located on the first side, and a fourth blocking part connected to the second side and located on the second side.

[0007] The object turntable provided in the embodiment of the present disclosure is capable of limiting the position and posture of the table paper by setting four blocking parts, thereby preventing the table paper from being distorted due to the rotation of the object carrier. The table paper can maintain a good posture relative to the object carrier surface to better transfer the workpiece, which helps to avoid defects in the workpiece during processing or movement.

[0008] In some embodiments, the blocking portion includes two rotating shafts arranged along the winding direction, and the rotation axes of the rotating shafts are parallel to a preset winding path surface of the table paper.

[0009] With such an arrangement, the two rotating shafts can reliably guide the moving direction of the table paper; the rotating shafts can also prevent the table paper from being damaged by friction.

[0010] In some embodiments, the rotating shaft includes a shaft, a sleeve, and at least two bearings; the sleeve is sleeved on the shaft through the at least two bearings, and the sleeve is used to abut against the table paper.

[0011] Such an arrangement can reduce the friction between the sleeve and the shaft, while ensuring the stable support of the sleeve by the shaft; it is conducive to achieving reliable limiting and smooth guidance of the table paper by the blocking part.

[0012] In some embodiments, the blocking portion includes a mounting bar, the mounting bar is fixed to the carrier plate, and the shaft is threadedly connected to the mounting bar. Exemplarily, the mounting bar and the sleeve are made of metal.

[0013] With this arrangement, the mounting strip can provide a stable and reliable mounting position, allowing the shaft to be mounted to the side of the loading plate. Furthermore, by providing a pad for the mounting strip, the shaft itself can be kept relatively short while ensuring that the shaft protrudes a sufficient distance from the side of the loading plate. The metal mounting strip has a stable structure and a high connection strength, making it suitable for connection to the body of the loading turntable or for modification of the body. The metal sleeve can achieve a smooth, wear-resistant surface with a hardness greater than that of the table paper, which is beneficial for blocking the side of the table paper, improving the performance of the blocking portion, ensuring that the table paper in the table paper mechanism does not go astray, and also improving its own service life.

[0014] In some embodiments, the table paper mechanism also includes a first deflection rotation axis and a second deflection rotation axis, the first deflection rotation axis is connected to the first side and the rotation axis is parallel to the loading surface, the second deflection rotation axis is connected to the second side and the rotation axis is parallel to the loading surface; the first deflection rotation axis and the second deflection rotation axis are respectively flush with the loading surface along the rotation axis; the blocking portion is located on the side of the first deflection rotation axis that is away from the loading surface.

[0015] This arrangement utilizes the first and second deflection shafts to constrain the deflection of the workpiece paper and maintain tension on the portion of the workpiece paper located on the loading surface, facilitating stable and reliable workpiece conveyance. This also reduces wear on the workpiece paper caused by the loading platform and extends the lifespan of the workpiece paper. The positioning of the blocking portion ensures smooth workpiece conveyance and ensures smooth sliding of the workpiece paper throughout its entire winding path.

[0016] In some embodiments, the table paper mechanism further includes a drive shaft detachably connected to the carrier plate, and the drive shaft is used to drive the table paper to move.

[0017] Such an arrangement facilitates the replacement of the table paper by providing a detachable drive shaft; and the space of the object turntable can be effectively utilized to achieve the normal operation of the table paper mechanism.

[0018] In some embodiments, the two rotating shafts of the blocking portion include a first rotating shaft and a second rotating shaft; along the rotation axis, the first rotating shaft is close to the loading surface, the second rotating shaft is close to the driving shaft, and the distance between the first rotating shaft and the second rotating shaft is greater than the distance between the second rotating shaft and the driving shaft.

[0019] This design minimizes space requirements while simultaneously reducing friction on the worktop paper. Friction is low at each pivot. The two pivots provide a consistent barrier to the sides of the worktop paper, helping to prevent curling and folding. Furthermore, this ensures accurate movement of the portion of the worktop paper on the loading plate, preventing misalignment and poor workpiece transport.

[0020] In some embodiments, the loading surface is provided with an air suction port array, the air suction ports in the air suction port array are evenly arranged, and the outline of the table paper is larger than the outline of the air suction port array.

[0021] This arrangement allows the workpiece to be suctioned using vacuum, resulting in a uniform and effective suction force. This ensures that the workpiece is securely positioned while being processed or as the carrier plate rotates around the indexing axis. This arrangement also allows the workpiece to be transported using table paper when not being suctioned.

[0022] In some embodiments, the air inlet array is a circular array or a concentric circle array without a central air inlet.

[0023] This arrangement avoids excessive suction at the center, helping to prevent uneven suction. The suction port array can adaptively absorb a single workpiece, whose position roughly corresponds to the center of the suction port array. The center axis of the table paper also roughly passes through the center of the suction port array.

[0024] The disclosed embodiment also provides a screen printing machine, which includes: a screen printing head; and the aforementioned object turntable, wherein the object plate of the object turntable has a printing position corresponding to the screen printing head and a transfer position rotated away from the screen printing head.

[0025] The screen printing machine provided by the embodiment of the present disclosure can perform screen printing on a workpiece, and the screen printing machine operates smoothly and has a high yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the structure of the object turntable according to an embodiment of the present disclosure;

[0027] Figure 2 Schematic diagram of the structure of the object turntable according to an embodiment of the present disclosure;

[0028] Figure 3 is a schematic exploded view of the first rotating shaft in an embodiment of the present disclosure;

[0029] Figure 4is a schematic top view of a carrier plate in an embodiment of the present disclosure;

[0030] Figure 5 is a schematic top view of a carrier plate in an embodiment of the present disclosure;

[0031] Figure 6 It is a schematic structural block diagram of the screen printing machine in an embodiment of the present disclosure.

[0032] Reference numerals: 1, loading plate; 101, loading surface; 102, first side; 103, second side; 110, first loading plate; 120, second loading plate; 130, third loading plate; 140, fourth loading plate; 150, platform;

[0033] 2. Table paper mechanism; 210. Table paper; 221. First deflection axis; 222. Second deflection axis; 223. Third deflection axis; 224. Drive shaft; 225. Belt; 226. Rotary valve;

[0034] 3. Blocking portion; 31. First blocking portion; 32. Second blocking portion; 33. Third blocking portion; 34. Fourth blocking portion; 310. First rotating shaft; 320. Second rotating shaft; 330. Mounting bar; 301. Shaft; 302. Sleeve; 303. Bearing;

[0035] 4. Air intake array; 401. Air intake;

[0036] 100, object turntable; 200, screen printing head; 300, screen printing machine; 400, first battery outline; 500, second battery outline. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present disclosure more obvious and easy to understand, the specific implementation methods of the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present disclosure. However, the embodiments of the present disclosure can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the connotations of the embodiments of the present disclosure. Therefore, the embodiments of the present disclosure are not limited by the specific examples of the embodiments disclosed below.

[0038] In the description of the embodiments of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure 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 should not be understood as limiting the embodiments of the present disclosure.

[0039] In the embodiments of the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. For example, the first barrier may also be referred to as the second barrier, and the second barrier may also be referred to as the first barrier. In the description of the embodiments of the present disclosure, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a flexible connection, or a rigid connection along at least one direction; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or directly connected with the presence of an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The terms "installed", "set", "fixed", etc. can be broadly understood as connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0042] like Figure 1 As shown, Figure 1 1 shows a turntable for carrying objects provided by an embodiment of the present disclosure. In an exemplary embodiment, the turntable 100 includes four carrying plates 1 and four table paper mechanisms 2. The carrying plates 1 and the table paper mechanisms 2 may be in a one-to-one correspondence, with each carrying plate 1 being provided with a table paper mechanism 2.

[0043] Alternatively, the carrier turntable 100 may include another number of carrier plates 1 and a corresponding number of table paper mechanisms 2. For example, the carrier turntable 100 may include one carrier plate 1 and one table paper mechanism 2. In exemplary embodiments, one carrier plate 1 may also be configured with two or another number of table paper mechanisms 2. One carrier plate 1 can be configured as a dual-station or multi-station workstation, with each table paper mechanism 2 used to transport one or more workpieces.

[0044] The indexing axis of the carrier turntable 100 can be parallel to the Z-axis direction, and the indexing axis can be located at the central axis position of the carrier turntable 100 as a whole. In the rectangular coordinate system XYZ established in space, the Z-axis direction can be the vertical direction, and the XY plane can refer to the horizontal plane. The carrier plate 1 is suitable for rotating around the indexing axis, and the carrier plate 1 can be rotated to different positions. The upper side of the carrier turntable 100 is the working side, and its different positions along the circumference can be connected to external equipment to realize assembly line operation; there can also be temporary storage stations or empty stations, for example, to adjust the production rhythm or to realize the production line layout.

[0045] like Figure 1 As shown, illustratively, the plurality of carrier plates 1 of the carrier turntable 100 include a first carrier plate 110 , a second carrier plate 120 , a third carrier plate 130 and a fourth carrier plate 140 .

[0046] Taking the first carrier plate 110 as an example, the carrier plate 1 has a carrier surface 101, a first side 102, and a second side 103. The carrier plate 1 may have four sides surrounding the carrier surface 101 along the XY plane.

[0047] The object-carrying surface 101 can be perpendicular to the Z-axis direction, that is, parallel to the XY plane. The object-carrying surface 101 is directed toward the working side along the indexing axis. Figure 1 The object loading surface 101 is used to load the workpiece. During the rotation of the object loading turntable 100, the object loading surface 101 can always be parallel to the XY plane.

[0048] The first side 102 and the second side 103 of the loading plate 1 surround the loading surface 101 along the XY plane. The first side 102 and the second side 103 are opposite to each other. Figure 1 The first carrier plate 110 in the embodiment of the present invention has its first side 102 and second side 103 facing each other along the Y-axis when in this position. The second side 103 faces inward, i.e., toward the indexing axis; the first side 102 faces outward, i.e., away from the indexing axis.

[0049] The table paper mechanism 2 includes a table paper 210. The table paper 210 is extended and wrapped around the first side 102, the loading surface 101 and the second side 103. The table paper 210 may not be wrapped directly under the loading board 1, or the table paper 210 may not completely surround the loading board 1. Figure 1 As shown, for example, the decking paper 210 at the first loading plate 110 is wrapped around the first loading plate 110. When the first loading plate 110 is in this position, the wrapping path of the decking paper 210 is parallel to the YZ plane. The portion of the decking paper 210 located on the loading surface 101 of the first loading plate 110 extends along the Y-axis, the portion located on the first side 102 extends along the Z-axis, and the portion located on the second side 103 extends along the Z-axis. The section of the decking paper 210 located on the loading surface 101 may be the highest portion of the decking paper 210.

[0050] The table paper 210 can be moved relative to the carrier plate 1 along the winding direction. The winding direction may refer to the circumferential direction of the carrier plate 1 in a plane passing through the index axis. Figure 1 In the illustrated posture of the object turntable 100, the first loading plate 110 has a circumferential direction in the YZ plane; the second loading plate 120 has a circumferential direction in the XZ plane. The mobility of the table paper 210 in the table paper mechanism 2 enables the workpiece placed thereon to move radially along the indexing axis. The table paper 210 can transport workpieces from external equipment to the loading surface 101, and can also transport workpieces on the loading surface 101. The object turntable 100 can receive and output workpieces in its radial direction. The surface of the table paper 210 can have sufficient friction against the workpiece being carried to drive the workpiece to move. The tensile strength of the table paper 210 is also sufficient to maintain its normal use.

[0051] The table paper 210 has a first side and a second side that are opposite to each other along the circumference of the indexing axis. The circumference of the indexing axis surrounds the indexing axis in the XY plane, and is locally shown as being substantially along the X-axis direction at the first carrier plate 110. Figure 1 As shown, for the table paper 210 at the first carrier plate 110, the first side is the side facing the second carrier plate 120, and the second side is the side facing the fourth carrier plate 140. In other embodiments, it can also be called Figure 1 The right side is the first side. Figure 1 The left side is the second side. For example, each portion of the table paper 210 along its extension direction can have the same width. When there are multiple table paper 210, each table paper 210 has its own first side and second side.

[0052] refer to Figure 1The object turntable 100 may include four blocking portions 3. When the object turntable 100 includes four loading plates 1 and four table paper mechanisms 2, it may include sixteen blocking portions 3. Every four blocking portions 3 correspond to one table paper mechanism 2, or more blocking portions 3 may correspond to one table paper mechanism 2. When a loading plate 1 includes multiple table paper mechanisms 2, multiple sets of blocking portions 3 may be provided on the loading plate 1.

[0053] Each of the four blocking portions 3 is used to abut against the table paper 210. Figure 1 As shown, for the first loading plate 1, the distance between the two blocking portions 3 along the X-axis direction can be equal to the width of the table paper 210. For example, the distance between the two blocking portions 3 can be slightly larger than the width of the table paper 210, but it can still help prevent the table paper 210 from being excessively skewed. Figure 1 In the first loading plate 110 and the second loading plate 120, the four blocking portions 3 in each loading plate 1 include a first blocking portion 31 connected to the first side 102 and located on the first side of the table paper 210, a second blocking portion 32 connected to the first side 102 and located on the second side of the table paper 210, a third blocking portion 33 connected to the second side 103 and located on the first side of the table paper 210, and a fourth blocking portion 34 connected to the second side 103 and located on the second side of the table paper 210.

[0054] The object turntable 100 provided in the embodiment of the present disclosure can be used to carry workpieces and transfer the workpieces between different workstations, such as from a loading position to a processing position, from a processing position to a discharge position, etc. Figure 1 The object turntable 100 can rotate clockwise to move the first object plate 110 from Figure 1 Turn the position shown to Figure 1 while the fourth carrier plate 140 from Figure 1 Turn the position shown to Figure 1 Similarly, the movement changes of the second carrier plate 120 and the third carrier plate 130 can be known.

[0055] The first blocking portion 31 and the second blocking portion 32 are both connected to the first side edge 102, and are located on both sides of the table paper 210. They can limit the portion of the table paper 210 at the first side edge 102 from both sides, so that the portion will not move significantly along the circumference of the object turntable 100; the third blocking portion 33 and the fourth blocking portion 34 are both connected to the second side edge 103, and are also located on both sides of the table paper 210. They can limit the portion of the table paper 210 at the second side edge 103 from both sides, so that the portion will not move significantly along the circumference of the object turntable 100.

[0056] Furthermore, the first and fourth blocking portions 31 and 34 are located diagonally relative to the loading surface 101 and the portion of the table paper 210 located on the loading surface 101, thereby helping to prevent the table paper 210 from rotating counterclockwise within the XY plane. The second and third blocking portions 32 and 33 are located at another diagonal position relative to the table paper 210, thereby helping to prevent the table paper 210 from rotating clockwise within the XY plane.

[0057] The object turntable 100 provided in the disclosed embodiment, by providing four blocking portions 3, can effectively restrain the table paper 210 of the table paper mechanism 2, preventing the table paper 210 from deviating relative to the object carrier 1, and thereby preventing the table paper 210 from causing the workpiece to deviate. This effectively overcomes both inertial offsets caused by starting and stopping the object turntable 100 and deviations caused by centripetal force during rotation.

[0058] When batches of workpieces are transported sequentially, each workpiece can be reliably and accurately transferred to a desired position by the carrier turntable 100 for processing or other operations, and then safely and reliably transported out of the carrier turntable 100. The batches of workpieces transferred using the carrier turntable 100 have a good yield.

[0059] The turntable 100 can include other numbers of carrier plates 1. Each rotation of the turntable 100 can rotate a carrier plate 1 clockwise or counterclockwise to an adjacent carrier plate 1. For example, depending on the production line layout, other rotation angles are possible. For example, if two carrier plates 1 form a pair, one pair of carrier plates 1 can be rotated to the position of another pair of carrier plates 1 at a time. In other embodiments, the distribution of the multiple carrier plates 1 can be uneven, and the rotation of the turntable 100 can be used to rotate a carrier plate 1 in a specific position to a specified position.

[0060] For example, the carrier turntable 100 includes a platform 150. Each carrier plate 1 can be connected to the platform 150. The platform 150 can be disc-shaped or in other shapes. The first side 102 of the carrier plate 1 can be close to or protrude from the outer periphery of the platform 150. Figure 1 As shown, four carrier plates 1 are evenly distributed on the platform 150 along the circumferential direction, and the position angle between two adjacent carrier plates 1 is 90°.

[0061] Combine Figure 2 As shown, in some embodiments, the barrier 3 includes two rotating shafts arranged along the winding direction, such as a first rotating shaft 310 and a second rotating shaft 320. The barrier 3 may also include more rotating shafts. At the first side 102, the winding direction of the table paper 210 is substantially equivalent to the Z-axis direction. The at least two rotating shafts included in the barrier 3 may be arranged along the Z-axis direction. The barrier 3 is used to prevent the table paper 210 from deflecting.

[0062] refer to Figure 1 and Figure 2 On the first carrier plate 110, the axis of the rotating shaft of the blocking portion 3 is parallel to the YZ plane, thereby limiting the actual winding path of the table paper 210 on the first carrier plate 110 to its preset winding path plane. On the second carrier plate 120, the axis of the rotating shaft of the blocking portion 3 is parallel to the XZ plane, thereby limiting the actual winding path of the table paper 210 on the second carrier plate 120 to its preset winding path plane. By limiting the axis of the rotating shaft, the actual winding path of the table paper 210 is prevented from deviating from the preset winding path plane.

[0063] For example, at the first loading plate 110, the axis of the rotating shaft can be along the Y-axis direction. When the paper surface of the table paper 210 is not parallel to the XZ plane, in order to ensure that the axis of the rotating shaft is perpendicular to the table paper 210, the axis of the rotating shaft may also be tilted relative to the Y-axis in the YZ plane. At the second loading plate 120, the axis of the rotating shaft can be along the X-axis direction. When the paper surface of the table paper 210 is not parallel to the YZ plane, in order to ensure that the axis of the rotating shaft is perpendicular to the table paper 210, the axis of the rotating shaft may also be tilted relative to the X-axis in the XZ plane. The circumference of the rotating shaft is tangent to the moving direction of the table paper 210, which helps to reduce the friction of the rotating shaft on the side of the table paper 210.

[0064] Combine Figure 3 As shown, Figure 3 The first rotating shaft 310 at the first carrier plate 110 is shown. Exemplarily, the rotating shaft includes a shaft 301, a sleeve 302, and at least two bearings 303. The rotating axis of the first rotating shaft 310 is along the Y-axis. The shaft 301 extends along the Y-axis, and the sleeve 302 is mounted on the shaft 301 via at least two bearings 303. The multiple bearings 303 can stably support the sleeve 302 and ensure that the sleeve 302 is rotatably connected to the shaft 301 with minimal friction. The sleeve 302 is used to abut against the table paper 210. One end of the shaft 301 is provided with a blocking cap, and the other end can be a connecting portion for connecting to the carrier plate 1.

[0065] refer to Figure 1 and Figure 2 For example, the blocking portion 3 includes a mounting bar 330. The mounting bar 330 is fixed to the carrier plate 1, and the shaft 301 is threadedly connected to the mounting bar 330. The connecting portion of the shaft 301 can be a threaded rod; the mounting bar 330 can be provided with a threaded hole. The blocking cap and mounting bar 330 can restrain the bearing 303 and the sleeve 302.

[0066] In some embodiments, the mounting bar 330 is made of metal. For example, the platform 150 is made of metal, and the platform 150 and the mounting bar 330 can be welded or connected by other means. For example, the sleeve 302 is made of metal. All parts of the rotating shaft can be made of metal. The rotating shaft has a long service life and excellent performance, ensuring smooth sliding of the table paper 210.

[0067] In other embodiments, the blocking portion may include a plastic belt, and the first rotating shaft and the second rotating shaft may be covered with the plastic belt at the same time so as to be rotatable.

[0068] Optionally, the positions of the first blocking portion 31 and the second blocking portion 32 along the Z-axis direction can be aligned or staggered. The blocking portion 3 can be provided with multiple rotation axes. The positions of the rotation axes can be aligned or staggered.

[0069] refer to Figure 1 Exemplarily, the table paper mechanism 2 further includes a deflection axis, specifically, a first deflection axis 221 and a second deflection axis 222. The first deflection axis 221 is connected to the first side 102, and the rotation axis of the first deflection axis 221 is parallel to the loading surface 101. The second deflection axis 222 is connected to the second side 103, and the rotation axis of the second deflection axis 222 is parallel to the loading surface 101. The table paper 210 is deflected at the deflection axis, achieving deflection in the extension direction and the winding direction.

[0070] like Figure 2 As shown, the table paper 210 can be installed loosely when assembling the table paper mechanism 2; however, during use, the table paper 210 can be tightened. For example, the first deflection axis 221 and the second deflection axis 222 are each flush with the loading surface 101 along the index axis, i.e., along the Z-axis. Specifically, the apex of each of the first deflection axis 221 and the second deflection axis 222 is flush with the loading surface 101, allowing the table paper 210 to lie flat on the loading surface 101, reducing wear on the loading plate 1 on the table paper 210.

[0071] Exemplarily, the blocking portion 3 is located on the side of the first deflection axis 221 facing away from the loading surface 101. Regarding the second deflection axis 222, the third blocking portion 33 and the fourth blocking portion 34 are also located below the deflection axis along the Z-axis. Exemplarily, the table paper mechanism 2 further includes a third deflection axis 223, which can be connected to the first side edge 102 and located on the side of the blocking portion 3 facing away from the first deflection axis 221, i.e., below the blocking portion 3. The axis can be located directly below the deflection axis along the Z-axis; alternatively, the axis can be arranged along the extension direction of the table paper 210, for example, between the two deflection axes.

[0072] In some embodiments, the table paper mechanism 2 further includes a drive shaft 224. The drive shaft 224 can utilize friction to drive the table paper 210. For example, one end of the table paper 210 is secured to the drive shaft 224, which can then be wound around the drive shaft 224. The table paper mechanism 2 can include two drive shafts 224, one connected to each end of the table paper 210.

[0073] The drive shaft 224 is detachably connected to the loading plate 1. Alternatively, the drive shaft 224 may be indirectly connected to the loading plate 1 by being mounted on the platform 150. The drive shaft 224 is used to drive the table paper 210 to move. Its rotation axis may be parallel to the loading surface 101 or to the deflection axis.

[0074] refer to Figure 2 The table paper mechanism 2 includes a driver (not shown) and a belt 225. The driver can be a motor, and the driver drives the drive shaft 224 to rotate through the belt 225. The table paper mechanism 2 may also include a rotary valve 226, through which the drive shaft 224 can be connected or disconnected.

[0075] The two rotating shafts of the blocking portion 3 include a first rotating shaft 310 and a second rotating shaft 320. Along the indexing axis or Z-axis, the first rotating shaft 310 is closer to the loading surface 101, while the second rotating shaft 320 is closer to the drive shaft 224. The distance between the first rotating shaft 310 and the second rotating shaft 320 is greater than the distance between the second rotating shaft 320 and the drive shaft 224, or the distance between the first rotating shaft 310 and the second rotating shaft 320 is greater than the distance between the first rotating shaft 310 and the loading surface 101. The table paper mechanism 2 has a compact structure and ensures stable operation of the table paper 210 without skewing.

[0076] refer to Figure 1 Combined with Figure 4 、 Figure 5 In an exemplary embodiment, a turntable 100 includes a loading plate 1 and a tabletop mechanism 2. A loading surface 101 of the loading plate 1 is provided with an air suction port array 4. A vacuum suction line (not shown) may be provided within the loading plate 1, through which a workpiece is suctioned onto the loading surface 101.

[0077] The uniform arrangement of the suction ports 401 within the suction port array 4 helps reduce the impact of differences in vacuum suction force on the workpiece. For example, the workpiece is a silicon wafer, and a grid line printing process is being performed on the turntable 100. Uniform suction on the silicon wafer ensures a high yield of the grid lines.

[0078] refer to Figure 4The carrier plate 1 of the carrier turntable 100 can be used to carry and absorb silicon wafers of different sizes for solar cells. For example, the first cell outline 400 shows a silicon wafer with a side length of 186 mm x 186 mm, while the second cell outline 500 shows a silicon wafer with a side length of 182 mm x 182 mm. The suction port array 4 falls within either the first cell outline 400 or the second cell outline 500; in other words, when placing both types of silicon wafers, the wafers can cover the suction port array 4 and be substantially centered.

[0079] The outline of the table paper 210 is larger than the outline of the air intake array 4. The width of the table paper 210 can be greater than the side length of the silicon wafer, allowing it to be transferred. For example, by combining the air intake array 4 with at least four blocking portions 3, the table paper 210 can accurately and reliably deliver the workpiece to the air intake array 4. After processing the workpiece, the table paper 210 can safely and reliably transport the workpiece away from the air intake array 4. The workpiece will not be deflected due to misalignment, nor will it be damaged due to uneven friction from the table paper 210.

[0080] like Figure 4 As shown, in an exemplary embodiment, the air intake array 4 is a circular array without an air intake at the center. The air intake array 4 does not have an air intake 401 at the center, but only has multiple air intakes 401 arranged in a surrounding manner, which can further solve the problem of uneven vacuum adsorption force and avoid poor grid lines caused by excessive friction between the center of the workpiece and the table paper 210. The inner circle of the circular array has eight air intakes 401 in a rectangular shape, and the outer circle has sixteen air intakes 401 in a rectangular shape. The air intakes 401 can be located on the sexts of the first battery outline 400 or on the sexts of the second battery outline 500. When the vacuum suction is ended, if the vacuum adsorption distribution on the loading surface 101 is uneven, the adsorption force cannot disappear immediately, which will cause the position with high adsorption force to have excessive friction with the table paper 210, which will then affect the quality of the grid lines and may even cause broken grids. The air intake array 4 in the embodiment of the present disclosure is conducive to balancing the vacuum adsorption force, and the performance of the loading turntable 100 is good.

[0081] like Figure 5 As shown, in other embodiments, the air inlet array 4 is a concentric circular array without a central air inlet. The air inlet array 4 does not have an air inlet 401 at its center, but instead has eight air inlets 401 evenly distributed along the circumference in the inner circle and sixteen air inlets 401 evenly distributed along the circumference in the outer circle.

[0082] refer to Figure 6 Combined with Figure 1 The embodiment of the present disclosure provides a screen printing machine 300 , which includes the aforementioned object turntable 100 and the screen printing head 200 .

[0083] The carrier plate 1 of the carrier turntable 100 has a printing position corresponding to the screen printing head 200 and a transfer position for rotating away from the screen printing head 200. Figure 1 The second carrier plate 120 is at the printing position, and the remaining carrier plates 1 are at the transfer positions. For example, the first carrier plate 110 is at the loading position, the third carrier plate 130 is at the unloading position, and the fourth carrier plate 140 may be at an empty position.

[0084] The screen printing head 200 can process the silicon wafer at the second carrier plate 120. Each carrier plate 1 can pass through the aforementioned positions. For example, the first carrier plate 110 receives the silicon wafer, and the workpiece is received by the workpiece on the table paper 210 of the carrier plate 1. The second carrier plate 120 processes the silicon wafer by the screen printing head 200. The printed silicon wafer is outputted using the table paper 210 at the third carrier plate 130.

[0085] The table paper 210 of the screen printing machine 300 operates stably and does not deviate. The screen printing machine 300 has good performance and high production yield.

[0086] For example, by configuring the air inlet array 4, the quality of the processed silicon wafer is guaranteed and the gate breakage caused by friction can be avoided.

[0087] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. The object turntable is characterized by: include: A loading plate adapted to rotate about an indexing axis, the loading plate comprising a loading surface, a first side edge, and a second side edge, the loading surface facing the working side along the indexing axis, the first side edge and the second side edge surrounding the loading surface and facing each other; a table paper mechanism comprising a table paper, the table paper being extended and wrapped around the first side, the loading surface, and the second side, and the table paper being movable relative to the loading plate along a wrapping direction, the table paper having a first side and a second side circumferentially opposite to each other along the indexing axis; as well as Four blocking portions, each of which is used to abut against the table paper, the four blocking portions including a first blocking portion connected to the first side and located on the first side, a second blocking portion connected to the first side and located on the second side, a third blocking portion connected to the second side and located on the first side, and a fourth blocking portion connected to the second side and located on the second side.

2. The object turntable according to claim 1, characterized in that: The blocking portion includes two rotating shafts arranged along the winding direction, and the rotation axes of the rotating shafts are parallel to the preset winding path surface of the table paper.

3. The object turntable according to claim 2, characterized in that: The rotating shaft includes a shaft, a sleeve and at least two bearings; the sleeve is sleeved on the shaft through the at least two bearings, and the sleeve is used to abut against the table paper.

4. The object turntable according to claim 3, characterized in that: The blocking portion includes a mounting bar, the mounting bar is fixed to the loading plate, and the shaft is threadedly connected to the mounting bar; The material of the installation bar and the material of the sleeve are respectively metal materials.

5. The object turntable according to claim 2, characterized in that: The table paper mechanism further includes a first deflection rotation axis and a second deflection rotation axis, wherein the first deflection rotation axis is connected to the first side edge and its rotation axis is parallel to the object loading surface, and the second deflection rotation axis is connected to the second side edge and its rotation axis is parallel to the object loading surface; The first deflection rotation axis and the second deflection rotation axis are respectively flush with the object loading surface along the indexing axis; the blocking portion is located on a side of the first deflection rotation axis facing away from the object loading surface.

6. The object turntable according to claim 5, characterized in that: The table paper mechanism further includes a driving shaft, which is detachably connected to the object carrier and is used to drive the table paper to move.

7. The object turntable according to claim 6, characterized in that: The two rotating shafts of the blocking portion include a first rotating shaft and a second rotating shaft; Along the indexing axis, the first rotating shaft is close to the loading surface, the second rotating shaft is close to the driving shaft, and the distance between the first rotating shaft and the second rotating shaft is greater than the distance between the second rotating shaft and the driving shaft.

8. The object turntable according to claim 1, characterized in that: The loading surface is provided with an air intake array, the air intakes in the air intake array are evenly arranged, and the outline of the table paper is larger than the outline of the air intake array.

9. The object turntable according to claim 8, characterized in that: The air intake array is a circular array or a concentric circle array without a central air intake.

10. Screen printing machine, characterized in that, include: Silk screen printing head; as well as According to any one of claims 1 to 9, the carrier plate of the carrier turntable has a printing position corresponding to the screen printing head and a transfer position rotated away from the screen printing head.

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