Conveying mechanism and material conveying device

Abstract

The invention discloses a conveying mechanism and a material conveying device.The conveying mechanism comprises at least one conveying wheel, each conveying wheel comprises a conveying face used for conveying a material belt, a plurality of through holes formed in the conveying face and a vacuum channel formed in the conveying wheel, and the through holes are arranged in the circumferential direction of the conveying face; according to the configuration of the conveying mechanism, when the conveying wheels rotate, at least one through hole always communicates with a vacuum channel so as to achieve vacuum adsorption of the material belt. And the leaping risk in the material belt conveying process is reduced.

Description

Technical Field

[0001] The present invention relates to the field of semiconductor manufacturing, and in particular to a conveying mechanism and a material conveying device. Background Art

[0002] During the manufacturing process of semiconductor chips, the chips are placed on a material belt and transported. In the prior art, the inner pin bonding machine uses a belt cam to control the opening and closing of the clamping jaws to drive the material belt to be transported. When the clamping jaws are opened, there is a risk that the material belt will jump. In the prior art, two conveying wheels are also set, and a clamping channel is formed between the two adjacent conveying wheels to clamp the material belt for transportation. However, there is no positioning device between the conveying wheels, and the material belt still has the risk of jumping. Summary of the invention

[0003] One of the purposes of the present invention is to provide a conveying mechanism to solve the technical problem of the material belt jumping when conveying the material belt in the prior art.

[0004] One of the purposes of the present invention is to provide a material conveying device.

[0005] To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides a conveying mechanism including at least one conveying wheel, wherein the conveying wheel includes a conveying surface for conveying a material belt, a plurality of through holes arranged on the conveying surface, and a vacuum channel arranged in the conveying wheel, wherein the plurality of through holes are arranged along the circumference of the conveying surface, and the conveying mechanism is configured as follows: when the conveying wheel rotates, at least one of the through holes is always connected to the vacuum channel to realize vacuum adsorption of the material belt.

[0006] As a further improvement of an embodiment of the present invention, the transmission mechanism is configured as follows: when the transmission wheel rotates, the through hole located at the top is connected to the vacuum channel.

[0007] As a further improvement of an embodiment of the present invention, the through hole located at the top is parallel to the vertical direction.

[0008] As a further improvement of an embodiment of the present invention, the conveying mechanism includes at least two through holes located at the top, and the two through holes located at the top are symmetrically arranged with respect to the vertical direction.

[0009] As a further improvement of an embodiment of the present invention, along the circumference of the conveying surface, the central angle formed between two adjacent through holes ranges from 10° to 20°, and the plurality of through holes are evenly arranged.

[0010] As a further improvement of one embodiment of the present invention, the vacuum channel includes sub-vacuum chambers arranged in one-to-one correspondence with the through holes, and the transmission mechanism includes a gravity block arranged in each of the sub-vacuum chambers, and the gravity block is used to control the opening and closing of the sub-vacuum chambers and the through holes.

[0011] As a further improvement of an embodiment of the present invention, the conveying mechanism includes an elastic member arranged in the sub-vacuum chamber, and the elastic member is arranged on a side of the gravity block away from the through hole.

[0012] As a further improvement of one embodiment of the present invention, the transmission mechanism is configured as follows: when the transmission wheel rotates, part of the gravity block has a tendency to move radially outward along the transmission wheel, the gravity block presses against the through hole to cover the through hole, and the through hole is separated from the sub-vacuum chamber.

[0013] As a further improvement of one embodiment of the present invention, the transmission mechanism is configured as follows: when the transmission wheel rotates, the gravity block located at the top presses down the elastic member, a gap is formed between the gravity block located at the top and the through hole, and the through hole is connected to the sub-vacuum chamber.

[0014] As a further improvement of an embodiment of the present invention, each of the through holes and the sub-vacuum chambers are arranged along the radial direction of the transmission wheel, and each of the through holes and its corresponding sub-vacuum chambers are aligned along the radial direction of the transmission wheel.

[0015] As a further improvement of an embodiment of the present invention, the size of the through hole is smaller than the size of the sub-vacuum chamber.

[0016] As a further improvement of an embodiment of the present invention, the vacuum channel includes a vacuum chamber located in the central area of ​​the transfer wheel, and a plurality of sub-vacuum chambers are located at the periphery of the vacuum chamber and connected to the vacuum chamber.

[0017] As a further improvement of an embodiment of the present invention, the vacuum chamber is a cylindrical chamber, and the central axis of the vacuum chamber coincides with the central axis of the transmission wheel.

[0018] As a further improvement of an embodiment of the present invention, the conveying wheel includes two side surfaces located on both sides of the conveying surface, at least one of the side surfaces has an opening, the opening is arranged along the central axis direction of the conveying wheel, and the opening is connected to the vacuum channel.

[0019] To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides a material conveying device, comprising the conveying mechanism described in any of the above-mentioned technical solutions and a driving mechanism for driving the conveying mechanism to rotate.

[0020] As a further improvement of an embodiment of the present invention, the transmission mechanism includes a connection block at least arranged on one side of the transmission wheel, the connection block is connected to the driving structure, and the central axis of the connection block coincides with the central axis of the transmission wheel.

[0021] Compared with the prior art, the present invention provides a conveying mechanism that uses a conveying wheel to set a through hole and a vacuum channel. When the conveying wheel conveys the material belt, the through hole is connected to the vacuum channel to vacuum absorb the material belt, thereby reducing the risk of the material belt jumping during the conveying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of a transmission mechanism in one embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of a transmission mechanism from another angle in one embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram of a transmission mechanism from another angle in one embodiment of the present invention.

[0025] Figure 4 It is a cross-sectional view of a conveying mechanism for adsorbing a material belt in one embodiment of the present invention.

[0026] Figure 5 It is a cross-sectional view of a conveying mechanism for adsorbing a material strip in another embodiment of the present invention.

[0027] Figure 6 It is a cross-sectional view of another angle of the conveying mechanism used to absorb the material belt in one embodiment of the present invention.

[0028] Figure 7 Schematic diagram of a material transfer device in one embodiment of the present invention.

[0029] Figure 8 It is a front view of a material transfer device in one embodiment of the present invention.

[0030] Fig. 9 It is a side view of a material transfer device in one embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0032] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In addition, the terms "first", "second", "third", "fourth", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] The terms "connected", "connected to" or any other variants are intended to cover various relative positions in a connection relationship, so as to include direct connection or indirect connection. Among them, the direct connection can be formed by a gas pipeline, the indirect connection can be a connection relationship established by a device such as a valve body, a sensor, etc., can be a connection relationship established by a gas circuit component such as a brake control unit, or can be a connection relationship established by any other medium such as air.

[0034] See also Figure 1-2 , is a schematic structural diagram of a conveying mechanism 100 provided in one embodiment of the present invention, which is used to convey a material belt.

[0035] In one embodiment, the conveying mechanism 100 includes at least one conveying wheel 10, the conveying wheel 10 includes a conveying surface 101 for conveying the material belt 200, a plurality of through holes 102 disposed on the conveying surface 101, and a vacuum channel disposed in the conveying wheel 10, wherein the plurality of through holes 102 are arranged along the circumference of the conveying surface 101, and the conveying mechanism 100 is configured such that when the conveying wheel 10 rotates, at least one of the through holes 102 is always connected to the vacuum channel to achieve vacuum adsorption of the material belt 200. In this way, when the conveying wheel 10 conveys the material belt 200, the material belt is vacuum adsorbed to prevent the material belt 200 from jumping.

[0036] The conveying mechanism 100 is configured such that when the conveying wheel 10 rotates, the through hole 102A at the top is connected to the vacuum channel. In a specific embodiment, the conveying wheel 10 conveys the material belt 200 in a horizontal direction, and the top of the conveying wheel 10 is used to carry and convey the material belt 200, so the through hole 102A at the top is provided to vacuum absorb the material belt 200.

[0037] It is understandable that in other embodiments, when the conveying wheel 10 conveys the material belt 200 in a vertical direction or other inclined directions, through holes are provided at the side end or other places of the conveying wheel 10 to vacuum absorb the material belt 200 .

[0038] In one embodiment, the through hole 102A at the top is parallel to the vertical direction. Figure 3-4 As shown, a through hole 102A at the top coincides with the vertical diameter of the conveying wheel 10 and is used to vertically adsorb the material belt 200. The through holes 102 at other positions are not connected to the vacuum channel and cannot adsorb the material belt 200, thereby preventing the material belt 200 from being adsorbed and being rolled into the conveying wheel 10.

[0039] It is understandable that in the above embodiment, the distance between two adjacent through holes 102 is relatively large. If more than two top through holes 102A adsorb the material strip 200 at the same time, the material strip 200 may bend.

[0040] In one embodiment, the transmission mechanism 100 includes at least two through holes 102A at the top, and the two through holes 102A at the top are symmetrically arranged with respect to the vertical direction. Figure 5 As shown, in this embodiment, the distance between the two adjacent through holes 102A at the top is relatively small, and a single through hole 102A can vacuum absorb the material strip 200 when it is rotated to be in a vertical direction; the two through holes 102A can also absorb the material strip 200 at the same time due to the small distance between them, which means that when the material strip 200 is located between the two through holes 102A, it can also be vacuum absorbed without causing the material strip 200 to bend.

[0041] During the conveying process, the conveying wheel 10 is rotating and the material belt 200 is moving forward horizontally. It can be understood that a through hole 102A should have an adsorption force on the material belt 200 from the moment it is about to contact the material belt 200. When the material belt 200 is completely aligned with the through hole 102A, the adsorption force is the largest. When the through hole 102A gradually deviates from the material belt 200, it also has an adsorption force on the material belt 200. When the through hole 102A deviates far from the material belt 200, the through hole 102A cannot perform a vacuum adsorption effect on the material belt 200, but switches to the next through hole 102A to start vacuum adsorption of the material belt 200.

[0042] It can be understood that in the process of switching from the previous through hole 102A to adsorb the material strip 200 to the next through hole 102A to adsorb the material strip 200, if the distance between two adjacent through holes 102 is large, the previous through hole 102A gradually deviates from the material strip 200 and has no adsorption force on the material strip 200, while the next through hole 102A gradually approaches the material strip 200, but has not yet generated adsorption force on the material strip 200, so there is only one top through hole 102A to adsorb the material strip 200.

[0043] It is understandable that before switching to the next top through hole 102A for adsorption, the two adjacent top through holes 102A may be connected. After the previous through hole 102A is adsorbed for a distance, the next through hole 102A connects to the previous through hole 102A to continue adsorbing the material strip. Although the two through holes 102 cannot adsorb the material strip 200 at the same time, the material strip 200 can also be continuously adsorbed and positioned to prevent jumping.

[0044] Of course, it is also possible that during the process of switching from the previous through hole 102A to the next through hole 102A, the material belt 200 may have a short transmission distance that is not subject to adsorption force. It is understandable that this distance is also small and will not cause the risk of jumping.

[0045] It is understandable that in the process of switching from the last through hole 102A adsorbing the material strip 200 to the next through hole 102A adsorbing the material strip 200, if the distance between two adjacent through holes 102 is small, the last through hole 102A will gradually deviate from the material strip 200, but still have an adsorption force on the material strip 200, while the next through hole 102A will gradually approach the material strip 200 and also have an adsorption force on the material strip 200. Therefore, there are two through holes 102A that can simultaneously have an adsorption force on the material strip 200. Continuous adsorption and positioning of the material strip 200 can be achieved to prevent jumping.

[0046] In one embodiment, along the circumference of the conveying surface 101 , the central angle formed between two adjacent through holes 102 ranges from 10° to 20°, and a plurality of the through holes 102 are evenly arranged along the circumference of the conveying surface 101 .

[0047] Reference Figure 4-5 As shown, the conveying mechanism 100 includes 24 through holes 102 evenly arranged along the circumferential direction, and the central angle formed between two adjacent through holes 102 is 15°. During the rotation process, the two adjacent top ends 102A can just alternately or simultaneously adsorb and position the material belt 200 to achieve continuous adsorption and positioning.

[0048] In other embodiments, the conveying mechanism 100 is provided with more groups of through holes 102, for example, 36 groups, and the central angle formed between two adjacent through holes 102 is 10°. At this time, during the rotation process, the two adjacent top ends 102A can also simultaneously adsorb and position the material belt 200.

[0049] In other embodiments, the conveying mechanism 100 may also reduce the number of through holes 102, for example, 18 groups, with the central angle between two adjacent through holes 102 being 20°, and the material belt 200 may be adsorbed and positioned to prevent it from jumping.

[0050] In one embodiment, the vacuum channel includes a sub-vacuum chamber 103 arranged in a one-to-one correspondence with the through hole 102, and the conveying mechanism 100 includes a gravity block 20 arranged in each of the sub-vacuum chambers 103, and the gravity block 20 is used to control the opening and closing of the sub-vacuum chamber 103 and the through hole 102.

[0051] Specifically, when the gravity block 20 blocks the through hole 102, the through hole 102 cannot communicate with the sub-vacuum chamber 103. When the gravity block 20 is spaced a certain distance from the through hole 102, the through hole 102 and the sub-vacuum chamber 103 are connected, so that the through hole 102 has a vacuum adsorption function. It can be seen that the through hole 102A at the top must be connected to the sub-vacuum chamber 103.

[0052] The size of the through hole 102 is smaller than that of the sub-vacuum chamber 103 . In other words, the size of the gravity block 20 is larger than that of the through hole 102 . In this way, the gravity block 20 can block the through hole 102 .

[0053] The weight block 20 can be a steel ball, a copper block, etc. with a certain weight, and the specific material and shape are not limited, as long as it can block the through hole 102. The weight requirement of the weight block 20 will be described in detail below.

[0054] In one embodiment, the transmission mechanism 100 includes an elastic member 30 disposed in the sub-vacuum chamber 103, and the elastic member 30 is disposed on a side of the gravity block 20 away from the through hole 102. The elastic member 30 is a spring, and the elastic member 30 is located between the wall of the sub-vacuum chamber 103 and the gravity block 20.

[0055] It can be seen that the gravity block 20 has its own gravity, and is also subject to the elastic force of the elastic member 30 and the centrifugal force generated during the rotation of the transmission wheel 10. The gravity is vertically downward, the elastic force is radially and outwardly along the transmission wheel 10, and the centrifugal force is also radially and outwardly along the transmission wheel 10. In other words, the elastic force and centrifugal force on the gravity block 20 are directed toward the direction of the corresponding through hole 102.

[0056] For ease of understanding, the combined force of elastic force and centrifugal force can also be decomposed into a first component along the vertical direction and a second component along the horizontal direction. The first component along the vertical direction can be superimposed or offset by gravity, and the second component along the horizontal direction has no other force to offset it, so that the gravity block 20 has a tendency to move in the horizontal direction.

[0057] The transmission mechanism 100 is configured such that when the transmission wheel 10 rotates, part of the gravity block 20 has a tendency to move outward along the radial direction of the transmission wheel 10, and the gravity block 20 abuts against the through hole 102 to cover the through hole 102, and the through hole 102 is separated from the sub-vacuum chamber 103. The through hole 102 at the non-top position is not connected to the vacuum channel, which saves vacuum and saves costs.

[0058] The conveying mechanism is configured as follows: when the conveying wheel 10 rotates, the gravity block 20 at the top presses down the elastic member 30, and a gap is formed between the gravity block 20 at the top and the through hole 102, and the through hole 102 is connected to the sub-vacuum chamber 103, and the through hole 102 has an adsorption function for adsorbing the material belt 200.

[0059] When the gravity of the gravity block 20 cannot offset the elastic force and centrifugal force it receives, the gravity block 20 will inevitably have a tendency to move toward the corresponding through hole 102, so it can block the through hole 102. When the gravity of the gravity block 20 can offset the elastic force and centrifugal force it receives, the gravity block 20 will have a tendency to move downward and gradually move away from the through hole 102, so that the through hole 102 and the sub-vacuum chamber 103 are connected.

[0060] Specifically, the force on the gravity block 20 located in the lower half of the transmission wheel 10 is first analyzed. At this time, the gravity block 20 is located vertically below or obliquely below the elastic member 30, and the through hole 102 is located vertically below or obliquely below the gravity block 20. The elastic force and centrifugal force on the gravity block 20 are vertically downward or obliquely downward. More specifically, the second component of force is horizontally outward, and the first component of force is vertically downward and superimposed with gravity, further increasing the tendency of the gravity block 20 to move toward the through hole 102. Therefore, the gravity block 20 located in the lower half of the transmission wheel 10 completely blocks the through hole 102.

[0061] Further analyzing the force on the gravity block 20 located on the transmission wheel 10 along the horizontal radial direction, at this time, the elastic member 30, the gravity block 20, and the through hole 102 are arranged outward in sequence along the horizontal radial direction, and the elastic force and centrifugal force on the gravity block 20 are outward along the horizontal radial direction, and there is no first component of force. The gravity force on the gravity block 20 and the second component of force are perpendicular to each other and cannot be offset. The gravity block 20 still has a tendency to move toward the through hole 102, that is, the gravity block 20 located on the transmission wheel 10 along the horizontal radial direction also blocks the through hole 102.

[0062] Continuing to analyze the force on the gravity block 20 located on the upper part of the transmission wheel 10, it can be further divided into two cases. The first case is the gravity block 20 located at the top, and the gravity block 20 located at the top corresponds to the through hole 102A located at the top and is located below the through hole 102A at the top.

[0063] The elastic force and centrifugal force exerted on the gravity block 20 at the top are vertically upward or close to vertically upward, which is equivalent to being exerted only on the first vertically upward force component or on the first vertically upward force component and a smaller second vertically upward force component. At this time, the gravity exerted on the gravity block 20 is greater than the first vertically upward force component, so that the gravity block 20 can move downward. Although the second force component may also exist, it does not affect the downward movement of the gravity block 20. Therefore, the gravity block 20 at the top can overcome the elastic force and centrifugal force to press the elastic member 30 downward to move away from the through hole 102A, and the through hole 102A is connected to the sub-vacuum chamber 103.

[0064] In the second case, the gravity block 20 is located between the top and the horizontal radial direction. The gravity, elastic force and centrifugal force on the gravity block 20 in this position can be partially offset, but the gravity block 20 still cannot overcome the elastic force and centrifugal force to move away from the through hole 102. Therefore, the through hole 102 and the sub-vacuum chamber 103 are separated.

[0065] In one embodiment, each of the through holes 102 and the sub-vacuum chamber 103 is arranged along the radial direction of the transmission wheel 10, and each of the through holes 102 and its corresponding sub-vacuum chamber 103 is aligned along the radial direction of the transmission wheel 10, so that the through holes 102 and the sub-vacuum chambers 103 can be connected in the radial direction.

[0066] More specifically, each of the through holes 102 and the corresponding gravity block 20 and elastic member 30 are sequentially arranged along the radial direction of the transmission wheel 10 .

[0067] The vacuum channel includes a vacuum chamber 104 located in the central area of ​​the transmission wheel 10, and a plurality of sub-vacuum chambers 103 are located on the periphery of the vacuum chamber 104 and connected to the vacuum chamber 104. The plurality of sub-vacuum chambers 103 are evenly arranged and have the same size and shape. The vacuum chamber 104 located in the center and the sub-vacuum chambers 103 located on the periphery together constitute a vacuum channel. The transmission mechanism 100 evacuates the vacuum chamber 104 to achieve evacuation of the plurality of sub-vacuum chambers 103.

[0068] It is understandable that the vacuum chamber 104 and the sub-vacuum chamber 103 are in a vacuum state, but the through holes 102 located at the periphery of the sub-vacuum chamber 103 are not necessarily in a vacuum state, and only the through holes 102 located at the top are in a vacuum state.

[0069] Combination Figure 6 As shown, the vacuum chamber 103 is a cylindrical chamber, the central axis of the vacuum chamber 103 coincides with the central axis of the conveying wheel 10, a plurality of sub-vacuum chambers 103 are located between the vacuum chamber 103 and a plurality of through holes 102, one ends of the plurality of sub-vacuum chambers 103 are connected to the same vacuum chamber 103, and the other ends of the plurality of sub-vacuum chambers 103 are connected to a plurality of through holes 102 respectively.

[0070] In one embodiment, the conveying wheel 10 includes two side surfaces located on both sides of the conveying surface 101, at least one of which has an opening 110, the opening 110 is arranged along the central axis of the conveying wheel, and the opening is connected to the vacuum channel. The opening 110 is used to connect an external vacuum device to achieve vacuuming inside the conveying wheel 10.

[0071] Specifically, the transmission wheel 10 includes connection blocks 11 disposed on two sides thereof, and the connection blocks 11 are used to be fixed to the fixing frame 400 , wherein one of the connection blocks 11 defines an opening 110 along the central axis direction of the transmission wheel 10 .

[0072] Combination Figure 7 As shown, the present invention includes a material transfer device 1000, including the conveying mechanism 100 of any of the above technical solutions and a driving mechanism 300 for driving the conveying mechanism 100 to rotate.

[0073] The transmission mechanism 100 includes a connection block 11 at least disposed on one side of the transmission wheel 10 . The connection block 11 is connected to the driving structure 300 , and the central axis of the connection block 11 coincides with the central axis of the transmission wheel 10 .

[0074] The two connection blocks 11 are fixed to the fixing frame 400 at the same time, wherein one of the connection blocks 11 is used to open the opening 110 and connect to the vacuum device, and the other connection block 11 is used to connect to the driving structure 300 to realize the rotation of the conveying wheel 10 .

[0075] Continue to combine Figure 8-9 As shown, the material conveying device 1000 includes a fixed frame 400 , and the material belt 200 is conveyed at the top of the fixed frame 400 . The conveying mechanism 100 and the driving mechanism 300 are installed and fixed on the fixed frame 400 and are located below the material belt 200 .

[0076] The material conveying device 1000 includes two conveying wheels 10 arranged opposite to each other, and the material belt 200 is located on the conveying surfaces 101 of the two conveying wheels 10 and is conveyed by the two conveying surfaces 101. The driving mechanism 300 includes a driving shaft 310, and both ends of the driving shaft 310 are respectively connected to the connecting blocks 11 of the two conveying wheels 10 to simultaneously drive the two conveying wheels 10 to rotate. The connecting blocks 11 for connecting the driving shafts 310 are arranged inwardly and oppositely, and the connecting blocks 11 for opening the openings 110 are arranged outwardly and oppositely.

[0077] The driving structure 300 includes a driving source, a driving wheel 320 connected to the driving source, and a driven wheel 330 connected to the driving wheel 320. The driving shaft 310 passes through the center of the driven wheel 330, and the central axis of the driving shaft 310 coincides with the central axis of the driven wheel 330. In this way, the driving wheel 320 drives the driven wheel 330 to rotate, and the driven wheel 330 drives the driving shaft 310 to rotate, and both ends of the driving shaft 310 simultaneously drive the two transmission wheels 10 to rotate.

[0078] The beneficial effects of the present invention are as follows: the conveying wheel 10 is provided with a through hole 102 and a vacuum channel. When the conveying wheel 10 conveys the material belt 200, the through hole 102 is connected to the vacuum channel to vacuum absorb the material belt 200, thereby reducing the risk of the material belt 200 jumping during the conveying process; the through hole 102 at the top of the conveying wheel 10 is used to vacuum absorb the material belt 200; the gravity block 20 and the elastic member 30 cooperate together to open or close the vacuum state of the through hole 102.

[0079] It can be formed by referring to any of the technical solutions provided above, and will not be described in detail here.

[0080] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0081] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transmission mechanism, characterized in that: It includes at least one conveying wheel, which includes a conveying surface for conveying the material belt, a plurality of through holes arranged on the conveying surface, and a vacuum channel arranged in the conveying wheel, and the plurality of through holes are arranged along the circumference of the conveying surface. The conveying mechanism is configured as follows: when the conveying wheel rotates, at least one of the through holes is always connected to the vacuum channel to achieve vacuum adsorption of the material belt.

2. The transmission mechanism according to claim 1, characterized in that: The transmission mechanism is configured such that when the transmission wheel rotates, the through hole at the top is connected to the vacuum channel.

3. The transmission mechanism according to claim 2, characterized in that: The through hole located at the top is parallel to the vertical direction.

4. The transmission mechanism according to claim 2, characterized in that: The conveying mechanism comprises at least two through holes at the top, and the two through holes at the top are symmetrically arranged with respect to the vertical direction.

5. The conveying mechanism according to claim 1, characterized in that: Along the circumference of the conveying surface, the central angle formed between two adjacent through holes ranges from 10° to 20°, and the plurality of through holes are evenly arranged.

6. The conveying mechanism according to claim 1, characterized in that: The vacuum channel includes sub-vacuum chambers arranged in one-to-one correspondence with the through holes, and the transmission mechanism includes a gravity block arranged in each of the sub-vacuum chambers, and the gravity block is used to control the opening and closing of the sub-vacuum chambers and the through holes.

7. The conveying mechanism according to claim 6, characterized in that: The conveying mechanism comprises an elastic member arranged in the sub-vacuum chamber, and the elastic member is arranged on a side of the gravity block away from the through hole.

8. The conveying mechanism according to claim 7, characterized in that: The transmission mechanism is configured as follows: when the transmission wheel rotates, part of the gravity block has a tendency to move outward along the radial direction of the transmission wheel, the gravity block abuts against the through hole to cover the through hole, and the through hole is separated from the sub-vacuum chamber.

9. The conveying mechanism according to claim 7, characterized in that: The transmission mechanism is configured as follows: when the transmission wheel rotates, the gravity block at the top presses down the elastic member, a gap is formed between the gravity block at the top and the through hole, and the through hole is connected to the sub-vacuum chamber.

10. The conveying mechanism according to claim 6, characterized in that: Each of the through holes and the sub-vacuum chambers are arranged along the radial direction of the transmission wheel, and each of the through holes and the sub-vacuum chambers corresponding thereto are aligned along the radial direction of the transmission wheel.

11. The conveying mechanism according to claim 6, characterized in that: The size of the through hole is smaller than that of the sub-vacuum chamber.

12. The conveying mechanism according to claim 6, characterized in that: The vacuum channel comprises a vacuum chamber located in the central area of ​​the conveying wheel, and a plurality of sub-vacuum chambers are located at the periphery of the vacuum chamber and are connected to the vacuum chamber.

13. The conveying mechanism according to claim 11, characterized in that: The vacuum chamber is a cylindrical chamber, and the central axis of the vacuum chamber coincides with the central axis of the transmission wheel.

14. The conveying mechanism according to claim 1, characterized in that: The conveying wheel comprises two side surfaces located at both sides of the conveying surface, at least one of the side surfaces has an opening, the opening is arranged along the central axis direction of the conveying wheel, and the opening is connected to the vacuum channel.

15. A material conveying device, characterized in that: It comprises a conveying mechanism as described in any one of claims 1 to 14 and a driving mechanism for driving the conveying mechanism to rotate.

16. The material conveying device according to claim 15, characterized in that: The transmission mechanism comprises a connection block at least arranged on one side of the transmission wheel, the connection block is connected to the driving structure, and the central axis of the connection block coincides with the central axis of the transmission wheel.

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