Adsorption block, conveying assembly and sheet body transferring device

Abstract

The utility model relates to the field of battery assembly production, in particular to an adsorption block, a conveying assembly and a sheet body transferring device, the adsorption block comprises a body, the outer surface of the body is provided with at least one first air inlet, the body is internally provided with a first air cavity, the first air cavity is communicated with the first air inlet through a first air path, and one side surface of the body is an adsorption surface; a first air blowing seam communicated with the first air cavity is formed in the adsorption surface, and air of the air source enters the first air cavity and then is blown out through the first air blowing seam, so that first adsorption force is generated on the adsorption surface; the body comprises at least one delayed release unit, the delayed release unit comprises a second air inlet, a second air path, a second air cavity and a second air blowing seam which are communicated in sequence, the second air inlet is formed in the outer surface of the body, the second air blowing seam is formed in the adsorption surface, and air of the air source enters the second air cavity and then is blown out through the second air blowing seam. According to the invention, the sheet body can be effectively prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the battery assembly production field, concretely speaking, a kind of suction block, conveying assembly and sheet body transfer device. BACKGROUND

[0002] In the battery assembly production process, it is often necessary to use suction conveying line to suck sheet body (such as silicon wafer or battery sheet etc.) from conveying line or other mechanism, and release the sucked sheet body into the magazine to collect.

[0003] In order to make the sheet body neatly stacked in the magazine, the magazine is usually placed obliquely. When the sheet body is released by the suction conveying line, the sheet body is in a horizontal posture. When the horizontal sheet body contacts the oblique magazine, it is easy to cause the sheet body to be knocked and damaged. SUMMARY

[0004] In view of the above technical problems, the utility model provides a kind of suction block, and its detailed technical scheme is as follows:

[0005] A suction block, the suction block includes a block-shaped body, wherein:

[0006] At least one first air inlet for communicating with the gas source is provided on the outer surface of the body, a first air cavity is provided in the interior of the body, the first air cavity is communicated with the first air inlet through a first air path, one side surface of the body is an adsorption surface, and a first air blowing slot communicated with the first air cavity is arranged at the adsorption surface; the gas of the gas source enters the first air cavity and is blown out through the first air blowing slot to generate a first adsorption force at the adsorption surface;

[0007] At least one delay release unit is included in the body, the delay release unit includes a second air inlet, a second air path, a second air cavity and a second air blowing slot communicated in sequence, the second air inlet is arranged on the outer surface of the body, the second air inlet is configured to communicate with the gas source, the second air blowing slot is arranged at the adsorption surface, the gas of the gas source enters the second air cavity and is blown out through the second air blowing slot to generate a second adsorption force at the delay release unit.

[0008] When the suction block of the application is used in combination with the conveying belt, the sheet body can be adsorbed on the conveying belt by the first adsorption force of the suction block, and conveyed to the release position by the conveying belt. Stop supplying gas to the first air inlet, and the first adsorption force disappears. The sheet body is released. At the same time, a certain amount of gas is continuously supplied to the second air inlet, and the corners of the sheet body are adsorbed by the second adsorption force, so that the sheet body is in an inclined state when released, to adapt to the inclined magazine. And the inclination angle of the sheet body and the inclination angle of the magazine can be adjusted by controlling the size and adsorption time of the second adsorption force, so that the sheet body does not knock when contacting the magazine, effectively avoiding damage to the sheet body.

[0009] In some embodiments, the number of delayed release units is two or more, and the delayed release units are arranged at intervals along the length direction of the first air blowing slot.

[0010] When the adsorption block of the present application is used in combination with a conveying belt, the first air blowing slot extends along the conveying direction of the conveying belt, so that the first adsorption force can be generated on the entire conveying path of the conveying belt, ensuring that the sheet body can be adsorbed on the conveying belt on the entire conveying path. Two or more release positions can be arranged on the conveying path to efficiently release the sheet body into the magazine. Each release position is matched with a delayed release unit, so that the sheet body released at each release position can be tilted and released into the corresponding magazine by the action of the delayed release unit.

[0011] In some embodiments, the second air cavity and the first air cavity share a chamber.

[0012] By designing the second air cavity to share a chamber with the first air cavity, the structure of the adsorption block is simple and easy to process.

[0013] In some embodiments, the body includes a base, a spacer and a pressing plate. The base is provided with a mounting groove extending in the first direction on one side. The spacer is arranged in the mounting groove and fixed by the pressing plate. At least one side edge of the spacer is provided with a plurality of notches in the first direction. The base and the pressing plate block the notches from both sides of the spacer to form a plurality of first air cavities and a plurality of second air cavities.

[0014] By arranging a plurality of notches on at least one side edge of the spacer, the first air cavities and the second air cavities can be formed after the spacer and the pressing plate are installed into the mounting groove of the base. The structure is simple and easy to process.

[0015] In some embodiments, both side edges of the spacer are provided with a plurality of notches in the first direction. The base and the pressing plate block all notches of both side edges to form the first air cavities and the second air cavities. The open end edge of each first air cavity constitutes a first air blowing slot extending in the first direction. The open end edge of each second air cavity constitutes a second air blowing slot extending in the first direction.

[0016] When the present application is used in combination with a conveying belt, the conveying belt is correspondingly provided with a first air blowing slot on both sides, ensuring smooth adsorption of the sheet body conveyed on the conveying belt.

[0017] In some embodiments, the second air path includes a transverse blind hole opened from one side of the base and two branch holes in communication with the side wall of the transverse blind hole. The transverse blind hole is in communication with the second air cavities located on both sides of the spacer through the two branch holes. The transverse blind hole is in communication with the second air inlet. A blocking member is accommodated in the transverse blind hole. The blocking member is configured to block the outer port of the transverse blind hole, or the blocking member is configured to block the outer port of the transverse blind hole and one of the branch holes at the same time.

[0018] By controlling the blocking position of the blocking member, the gas supply to one side or two sides of the second air cavity is selected, so that the size and position of the second adsorption force are adjusted as needed.

[0019] A conveying assembly, comprising a mounting frame, a conveying belt assembly arranged on the mounting frame, a driving mechanism for driving the conveying belt assembly to operate, and at least one adsorption block, wherein:

[0020] The adsorption block extends along the conveying direction of the conveying belt in the conveying belt assembly, and the conveying belt is arranged close to the adsorption surface of the adsorption block and away from the first air blowing slot and the second air blowing slot;

[0021] The adsorption block is configured to adsorb the sheet on the conveying surface of the conveying belt or release the sheet adsorbed on the conveying surface of the conveying belt;

[0022] At least one release position is arranged on the conveying path of the conveying surface of the conveying belt, and a delayed release unit is arranged at the corner position of the release position, and the delayed release unit is configured to provide a second adsorption force to the corresponding corner of the sheet when releasing the sheet on the conveying surface.

[0023] The conveying assembly provided in the application can improve the adsorption force of the corner of the sheet through the second adsorption force when releasing the sheet, so that the sheet falls in an inclined posture.

[0024] A sheet transfer device, comprising an intermediate conveying mechanism and two conveying assemblies, the two conveying assemblies are arranged on the two sides of the intermediate conveying mechanism, and the intermediate conveying mechanism is configured to adsorb the sheet and transmit the sheet to the conveying assemblies on the two sides.

[0025] The sheet transfer device provided in the application can adsorb the sheet through the intermediate conveying mechanism and transmit the sheet to the conveying assemblies on the two sides, and release the sheet in an inclined posture through the conveying assemblies.

[0026] In some embodiments, the sheet transfer device further comprises a magazine for carrying the sheet, the magazine is arranged below the release position, the inner bottom surface of the magazine is arranged to be inclined downward from the first corner to the opposite second corner, and the delayed release unit is arranged above the first corner.

[0027] The inclined angle of the released sheet is basically consistent with the inclined angle of the inner bottom surface of the magazine through the delayed release unit, so that the sheet does not bump into the corner of the magazine, and the sheet is prevented from being damaged.

[0028] In some embodiments, the sheet transfer device further comprises a main conveying line configured to convey the sheet, and the intermediate conveying mechanism is configured to adsorb the sheet on the main conveying line and convey the sheet to the conveying assemblies on the two sides.

[0029] The application can transfer the sheet on the main conveying line to the magazine through the cooperation of the intermediate conveying mechanism and the conveying assembly. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural view of the adsorption block of the application;

[0031] Figure 2 is a structural view of the adsorption block of the application from another angle;

[0032] Figure 3 is a sectional view of the first air inlet of the adsorption block of the application;

[0033] Figure 4 is a sectional view of the second air inlet of the adsorption block of the application;

[0034] Figure 5 is a structural view of the spacer of the application;

[0035] Figure 6 is a structural view of the pressing plate of the application;

[0036] Figure 7 is a structural view of the conveying assembly of the application;

[0037] Figure 8 is a structural view of the sheet transfer device of the application;

[0038] Figure 9 is a structural view of the magazine of the application.

[0039] Figures 1 to 9 The application comprises: 10 - adsorption block; 11 - first air inlet; 12 - first air cavity; 13 - first air path; 14 - first air blowing slot; 15 - second air inlet; 16 - second air path; 161 - transverse blind hole; 162 - branch hole; 17 - second air cavity; 18 - base; 19 - spacer; 191 - pressing plate; 192 - notch; 20 - first pipe joint; 30 - second pipe joint; 40 - driving mechanism; 50 - conveying belt; 60 - sheet; 70 - adsorption block body; 80 - intermediate conveying mechanism; 90 - conveying assembly; 100 - magazine. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the application will be further described in detail below with reference to the drawings and specific embodiments.

[0041] As Figures 1-6As shown, an adsorption block 10 includes a block-shaped body, wherein: at least one first air inlet 11 for communicating with a gas source is opened on the outer surface of the body, a first air cavity 12 is opened inside the body, the first air cavity 12 is connected to the first air inlet 11 via a first air passage 13, one side surface of the body is an adsorption surface, and a first air blowing slit 14 communicating with the first air cavity 12 is provided at the adsorption surface. After the gas from the gas source enters the first air cavity 12, it is blown out through the first air blowing slit 14 to generate a first adsorption force at the adsorption surface; the body includes at least one delayed release unit, the delayed release unit includes a second air inlet 15, a second air passage 16, a second air cavity 17 and a second air blowing slit connected in sequence, the second air inlet 15 is provided on the outer surface of the body, the second air inlet 15 is configured to communicate with a gas source, the second air blowing slit is provided at the adsorption surface, after the gas from the gas source enters the second air cavity 17, it is blown out through the second air blowing slit to generate a second adsorption force at the delayed release unit.

[0042] When the adsorption block 10 of this application is used in conjunction with a conveyor belt, it can use the first adsorption force of the adsorption block 10 to adsorb the sheet onto the conveyor belt and transport it to the release position. When the air supply to the first air inlet 11 stops, the first adsorption force disappears, and the sheet is released. Simultaneously, a certain amount of gas continues to be supplied to the second air inlet 15, using the second adsorption force to adsorb the edges and corners of the sheet, so that the sheet is released in an inclined state to fit the inclined material box. Furthermore, by controlling the magnitude of the second adsorption force and the adsorption duration, the inclination angle of the sheet and the inclination angle of the material box can be adjusted to be basically consistent, so that the sheet will not collide with the material box when it comes into contact with it, effectively avoiding damage to the sheet. Both the first and second adsorption forces of this application are based on Bernoulli's principle.

[0043] like Figure 1 As shown, the first pipe connector 20 is installed at the location of the first air inlet 11. That is, the first air inlet 11 is connected to the air source through the first pipe connector 20 and the first air pipe. A first valve is installed along the path of the first air pipe to control the airflow. The second pipe connector 30 is installed at the location of the second air inlet 15. The second air inlet 15 is connected to the air source through the second pipe connector 30 and the second air pipe. A second valve is installed along the path of the second air pipe to control the airflow.

[0044] Figure 1 It includes two first pipe joints 20, which are simultaneously connected to the gas source. Because the body is relatively long, the gas source supplies gas into the body through the two first pipe joints 20 at the same time, so that the gas inside the body is relatively uniform and the magnitude of the first adsorption force is relatively uniform at all points.

[0045] In some embodiments, there are two or more delayed release units, which are spaced apart along the length of the first air slit 14.

[0046] The adsorption block 10 of the present application is used in combination with a conveying belt, the first air blowing slot 14 extends along the conveying direction of the conveying belt, so that the first adsorption force can be generated on the entire conveying path of the conveying belt, and the sheet body can be adsorbed on the conveying belt on the entire conveying path. Figure 1 The body includes two second pipe joints 30, i.e., two delayed release units are arranged on the body. Two release positions can be arranged on the conveying path of the conveying belt, i.e., two sheet bodies can be released at the same time, one delayed release unit is arranged at each release position, and when each sheet body is released at the release position, the corner of the sheet body is adsorbed by the corresponding delayed release unit, so that the two sheet bodies are in an inclined state when released. If the conveying path of the conveying belt is long, 3 or more release positions can be arranged along the conveying path of the conveying belt, the number of delayed release units is the same as the number of release positions and one-to-one correspondence, and the number of delayed release units is also 3 or more.

[0047] As shown in Figure 4 In some embodiments, the second air cavity 17 and the first air cavity 12 share a cavity.

[0048] The present application designs the second air cavity 17 to share a cavity with the first air cavity 12, so that the structure of the adsorption block 10 is simple and easy to process. Of course, the first air cavity 12 and the second air cavity 17 can also be different cavities.

[0049] In some embodiments, as shown in Figures 4-6 The body includes a base 18, a spacer 19 and a pressing plate 191, one side of the base 18 is provided with a mounting groove extending along the first direction X, the spacer 19 is arranged in the mounting groove and is fixed by the pressing plate 191, at least one side edge of the spacer 19 is provided with a plurality of notches 192 along the first direction X, and the base 18 and the pressing plate 191 block the notches 192 from both sides of the spacer 19 to form a plurality of first air cavities 12 and a plurality of second air cavities 17.

[0050] By arranging a plurality of notches 192 on at least one side edge of the spacer 19, the first air cavities 12 and the second air cavities 17 can be formed after the spacer 19 and the pressing plate 191 are installed into the mounting groove of the base 18, which is simple in structure and easy to process.

[0051] In some embodiments, the two side edges of the partition 19 are each provided with a plurality of notches 192 in the first direction X, and the base 18 and the pressing plate 191 simultaneously block all the notches 192 of the two side edges to form the first air cavities 12 and the second air cavities 17, the open end edges of each first air cavity 12 constitute a first air blowing slot 14 extending in the first direction X, and the open end edges of each second air cavity 17 constitute a second air blowing slot extending in the first direction X. Since the delay release unit only needs to adsorb the corners of the sheet, i.e., the coverage of the second adsorption force only needs to be at the corners of the sheet, and the coverage of the first adsorption force needs to cover the entire conveying path of the conveying belt, the number of first air cavities 12 on each side is greater than the number of second air cavities 17 on the same side, i.e., the second air cavities 17 only share the chamber with part of the first air cavities 12.

[0052] When the present application is used with the conveying belt, the conveying belt is provided with the first air blowing slots 14 on both sides, which ensures the stable adsorption of the sheet conveyed on the conveying belt.

[0053] In some embodiments, as shown in Figure 4 the second air path 16 includes a transverse blind hole 161 opened from one side of the base 18 and two branch holes 162 in communication with the side wall of the transverse blind hole 161, the transverse blind hole 161 is in communication with the second air cavities 17 located on the two sides of the partition 19 through the two branch holes 162, the transverse blind hole 161 is in communication with the second air inlet 15, and the transverse blind hole 161 accommodates a blocking member, which is configured to block the outer port of the transverse blind hole 161, or the blocking member is configured to block the outer port of the transverse blind hole 161 and one of the branch holes 162 at the same time.

[0054] By controlling the blocking position of the blocking member, the gas supply to one side or both sides of the second air cavities 17 is selected, so as to adjust the size and position of the second adsorption force as needed. Specifically, the blocking member can be a screw, which can only block the outer port of the transverse blind hole 161, so that the transverse blind hole 161 and the two branch holes 162 are in communication to supply gas to the second cavities 17 on both sides to provide a larger second adsorption force. Or the screw is locked in the transverse blind hole 161, and the screw blocks one of the branch holes 162, so that the transverse blind hole 161 is only in communication with the other branch hole 162 to supply gas to the second cavities 17 on one side to provide a smaller second adsorption force.

[0055] As shown in Figure 7 the present application also provides a conveying assembly 90, which comprises a mounting frame, a conveying belt assembly arranged on the mounting frame, a driving mechanism 40 for driving the conveying belt assembly to operate, and at least one adsorption block 10, wherein:

[0056] The adsorption block 10 extends along the conveying direction of the conveying belt 50 in the conveying belt assembly, and the conveying belt 50 is arranged close to the adsorption surface of the adsorption block 10 and away from the first air blowing slots 14 and the second air blowing slots.

[0057] The adsorption block 10 is configured to adsorb the sheet 60 onto the conveyor surface of the conveyor belt 50 or release the sheet 60 adsorbed onto the conveyor surface of the conveyor belt 50.

[0058] At least one release position is provided on the conveying path of the conveying surface of the conveyor belt 50. The delayed release unit is located at the corner of the release position. The delayed release unit is configured to provide a second adsorption force to the corner of the sheet 60 when the sheet 60 on the conveying surface is released.

[0059] The conveying component 90 provided in this application can increase the adsorption force on the edges and corners of the sheet 60 by a second adsorption force when the sheet 60 is released, so that the sheet 60 falls in an inclined posture.

[0060] The following is based on Figure 7 Taking the conveying component 90 as an example, we will introduce its structure in detail. Figure 7 In the process, the drive mechanism 40 is a motor, and the conveyor belt assembly includes two parallel conveyor belts 50. The motor drives the two conveyor belts 50 to rotate simultaneously. One conveyor belt 50 is equipped with an adsorption block 10, and the other conveyor belt 50 is equipped with a strip-shaped adsorption block 70. The adsorption block 70 has an existing structure, that is, the adsorption block 70 is also connected to the air source. The adsorption surface of the adsorption block 70 also forms a first adsorption force based on the Bernoulli principle. The combined effect of the first adsorption force of the adsorption block 70 and the first adsorption force of the adsorption block 10 causes the sheet 60 to be simultaneously adsorbed on the lower surface of the two conveyor belts 50 and transported. The conveying assembly 90 has two release positions on the conveying path. There is no delayed release unit on the adsorption block 70. The two delayed release units are concentrated on the adsorption block 10. The sheet 60 at the two release positions is released into the two material boxes with the same tilt posture. The tilt posture of the two material boxes is also consistent.

[0061] Alternatively, in the conveyor belt assembly, two conveyor belts 50 are each paired with an adsorption block 10. The conveying path of the conveying assembly 90 is provided with two release positions and two delayed release units. One delayed release unit is arranged on one of the adsorption blocks 10, and the other delayed release unit is arranged on the other adsorption block 10. The sheet 60 of the two release positions is released into the two material boxes with different tilt postures, and the tilt postures of the two material boxes are also different.

[0062] Alternatively, the conveyor belt assembly includes a wider conveyor belt 50 that matches a wider adsorption block 10, with the second air slit of the delayed release unit arranged at the edge of the adsorption block 10 to ensure that the delayed release unit can adsorb the corners of the sheet 60.

[0063] The number of release positions on the conveying path of the conveying component 90 can be set to 1, 2 or more as needed.

[0064] As Figure 8 shown, the application also provides a wafer transfer device, the wafer transfer device comprising an intermediate conveying mechanism 80 and two conveying assemblies 90, the two conveying assemblies 90 being arranged on both sides of the intermediate conveying mechanism 80, the intermediate conveying mechanism 80 being configured to adsorb the wafer 60 and transmit the wafer 60 to the conveying assemblies 90 on both sides.

[0065] The wafer transfer device provided by the application can adsorb the wafer 60 by the intermediate conveying mechanism 80 and transmit the wafer 60 to the conveying assemblies 90 on both sides, and release the wafer 60 by the conveying assemblies 90.

[0066] In some embodiments, as Figure 9 shown, the wafer transfer device further comprises a magazine 100 for carrying the wafer 60, the magazine 100 being arranged below the release position, the inner bottom surface of the magazine 100 being arranged downwardly and obliquely from the first corner to the opposite second corner, and the delay release unit being arranged above the first corner, Figure 9 The wafer 60 is carried in the magazine 100.

[0067] The delay release unit makes the oblique angle of the released wafer 60 consistent with the oblique angle of the inner bottom surface of the magazine 100, so as to prevent the wafer 60 from colliding with the corners of the magazine 100 and being damaged.

[0068] In some embodiments, the wafer transfer device further comprises a main conveying line configured to convey the wafer 60, and the intermediate conveying mechanism 80 is configured to adsorb the wafer 60 on the main conveying line and transmit the wafer 60 to the conveying assemblies 90 on both sides.

[0069] As one of the embodiments, the conveying direction of the main conveying line is perpendicular to the conveying direction of the intermediate conveying mechanism 80, the intermediate conveying mechanism 80 is arranged horizontally above the main conveying line, and the intermediate conveying mechanism 80 can adsorb the wafer 60 on the main conveying line and transmit the wafer 60 to the conveying assemblies 90 on both sides, so as to release the wafer 60 to the magazine 100 for collection after the wafer 60 is transported to the release position by the conveying assemblies 90.

[0070] The above has described the utility model in sufficient detail with certain particularity. Those skilled in the art should understand that the description in the embodiments is only exemplary, and all changes made without departing from the true spirit and scope of the utility model should belong to the protection scope of the utility model. The scope of protection claimed by the utility model is defined by the claims, not by the above description in the embodiments.

Claims

1. An adsorption block, characterized in that, The adsorption block comprises a block-shaped body, wherein: At least one first air inlet is provided on the outer surface of the body for communicating with a gas source. A first air cavity is provided inside the body. The first air cavity is connected to the first air inlet via a first air passage. One side surface of the body is an adsorption surface, and a first air blowing slit is provided at the adsorption surface to communicate with the first air cavity. After the gas from the gas source enters the first air cavity, it is blown out through the first air blowing slit to generate a first adsorption force at the adsorption surface. The body includes at least one delayed release unit. The delayed release unit includes a second air inlet, a second air passage, a second air chamber, and a second blowing slit connected in sequence. The second air inlet is disposed on the outer surface of the body and is configured to communicate with an air source. The second blowing slit is disposed at the adsorption surface. After the gas from the air source enters the second air chamber, it is blown out through the second blowing slit to generate a second adsorption force at the delayed release unit.

2. The adsorption block as described in claim 1, characterized in that: There are two or more delayed release units, which are spaced apart along the length of the first air slit.

3. The adsorption block as described in claim 1, characterized in that: The second air chamber and the first air chamber share a common chamber.

4. The adsorption block as described in claim 1 or 3, characterized in that: The main body includes a base, a partition, and a pressure plate. The base has a mounting groove extending along a first direction on one side. The partition is disposed in the mounting groove and pressed and fixed by the pressure plate. At least one edge of the partition has a plurality of notches along the first direction. The base and the pressure plate seal the notches from both sides of the partition to form a plurality of first air chambers and a plurality of second air chambers.

5. The adsorption block as described in claim 4, characterized in that: The partition has several notches on both sides along the first direction. The base and the pressure plate simultaneously seal all the notches on both sides to form the first air chamber and the second air chamber. The open end edge of each first air chamber forms the first air slit extending along the first direction, and the open end edge of each second air chamber forms the second air slit extending along the first direction.

6. The adsorption block as described in claim 5, characterized in that: The second air passage includes a transverse blind hole opened from one side of the base and two branch holes communicating with the side wall of the transverse blind hole. The transverse blind hole communicates with the second air chambers located on both sides of the partition through the two branch holes respectively. The transverse blind hole communicates with the second air inlet. A sealing member is accommodated in the transverse blind hole. The sealing member is configured to block the outer port of the transverse blind hole, or the sealing member is configured to simultaneously block the outer port of the transverse blind hole and one of the branch holes.

7. A conveying assembly, characterized in that, The conveying assembly includes a mounting frame, a conveyor belt assembly disposed on the mounting frame, a drive mechanism for driving the conveyor belt assembly, and at least one adsorption block as described in any one of claims 1-6, wherein: The adsorption block extends along the conveying direction of the conveyor belt in the conveyor belt assembly, and the conveyor belt is positioned close to the adsorption surface of the adsorption block and avoids the first air blowing slit and the second air blowing slit. The adsorption block is configured to adsorb the sheet onto the conveyor surface of the conveyor belt or release the sheet adsorbed onto the conveyor surface of the conveyor belt. At least one release position is provided on the conveying path of the conveying surface of the conveyor belt, and the delayed release unit is located at the corner of the release position. The delayed release unit is configured to provide a second adsorption force to the corner of the sheet when releasing the sheet on the conveying surface.

8. A sheet transfer device, characterized in that, The sheet transfer device includes an intermediate conveying mechanism and two conveying assemblies as described in claim 7, the two conveying assemblies being respectively arranged on both sides of the intermediate conveying mechanism, the intermediate conveying mechanism being configured to adsorb the sheet and transfer the sheet to the conveying assemblies on both sides.

9. The sheet transfer device as described in claim 8, characterized in that: The tablet transfer device further includes a material box for carrying the tablet, the material box being arranged below the release position, the bottom surface of the material box being arranged inclined downward from the first corner toward the opposite second corner, and the delayed release unit being arranged above the first corner.

10. The sheet transfer device as described in claim 8 or 9, characterized in that: The sheet transfer device further includes a main conveyor line configured to convey the sheet, and an intermediate conveyor mechanism configured to adsorb and convey the sheet on the main conveyor line to the conveyor components on both sides.

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