Tray moving device and check system

Abstract

The present disclosure provides a tray moving device and a check system. The tray moving device comprises a conveying line body, a tray pushing mechanism and a first detection mechanism; the conveying line body is configured to convey in a first direction trays borne thereby; the tray pushing mechanism comprises a driving part and a pushing part which are connected to each other, the pushing part being located on a side of the conveying line body; the pushing part is configured to be driven by the driving part to push a tray at a predetermined position in a second direction, the second direction intersecting the first direction; when the pushing part reaches an end point of a pushing stroke thereof, the tray is pushed to leave the conveying line body, the position of the end point being associated with the geometric attribute of the tray, such that the pushing stroke satisfies a predetermined requirement.

Description

Pallet moving device and inspection system

[0001] This application claims priority to Chinese patent application No. 202410358220.5, filed on March 27, 2024, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the technical field of conveying equipment, the technical field of security inspection or other technical fields, and in particular to a pallet moving device and an inspection system. Background Art

[0003] At airports, train stations and other places, it is usually necessary to conduct security checks on cargo or passengers' luggage to ensure passage and travel safety.

[0004] A conveying device for transporting items to be inspected is usually placed in the security inspection area. The conveying device transports the empty pallet to the predetermined position. The pallet at the predetermined position is pushed to the placement position by the pushing component. The passenger or security inspector takes the empty pallet from the placement position and places the items to be inspected into the pallet. The pallet loaded with the items to be inspected is further transported to the inspection area for inspection. After the inspection is completed, the empty pallet is transported to the predetermined position again to realize the recycling of the pallet.

[0005] In the related art, in the process of pushing a pallet from a predetermined position to a placement position, a fixed pushing stroke may cause a waste of stroke for some pallets, thereby affecting the transportation efficiency and security inspection efficiency. Summary of the Invention

[0006] A first aspect of an embodiment of the present disclosure provides a pallet moving device, comprising:

[0007] The conveyor line body is configured to convey the pallet it carries along a first direction; the tray pushing mechanism includes a driving part and a pushing part connected to each other, the pushing part is located on one side of the conveyor line body, and the pushing part is configured to be driven by the driving part to push the pallet to a predetermined position along a second direction, and the second direction intersects with the first direction; wherein, when the pushing part reaches the end point of its pushing stroke, the pallet is pushed away from the conveyor line body, and the position of the end point is associated with the geometric properties of the pallet, so that the pushing stroke meets the predetermined requirements.

[0008] According to an embodiment of the present disclosure, the geometric property of the tray includes a length along the second direction, and the pushing stroke meeting the predetermined requirement includes:

[0009] For pallets of different lengths, the pushing stroke is inversely proportional to the length.

[0010] According to an embodiment of the present disclosure, it further includes:

[0011] A first detection mechanism, wherein, during the process of pushing the tray, the first detection mechanism is configured to detect that the pushing portion reaches the end point and send a stop pushing signal; wherein, the position of the first detection mechanism corresponds to the position of the end point, and the position of the first detection mechanism is adjustable, which is pre-adjusted and determined according to the geometric properties of the tray being pushed, so that the pushing stroke meets the predetermined requirements.

[0012] According to an embodiment of the present disclosure, after the stop pushing signal is issued, the pushing portion is driven by the driving portion to retreat to the starting point of the pushing stroke; the tray moving device further includes:

[0013] The second detection mechanism is arranged opposite to the first detection mechanism along the second direction, and the second detection mechanism is configured to send a stop and retract signal when detecting that the pushing portion reaches the starting point.

[0014] According to an embodiment of the present disclosure, the position of the second detection mechanism corresponds to the position of the starting point, and the position of the second detection mechanism is adjustable, which is pre-adjusted and determined according to the geometric properties of the pushed tray; wherein, when the pushing portion is located at the starting point, the distance between the position of the starting point and the contact surface of the pushed tray is less than or equal to a preset distance, and greater than or equal to 0.

[0015] According to an embodiment of the present disclosure, a triggering member is provided on the driving portion, and the first detection mechanism includes:

[0016] The first photoelectric switch has an adjustable position. When the position of the first photoelectric switch changes, the position of its detection area changes accordingly. During the process of pushing the tray, the driving portion moves to move the trigger member. When the trigger member moves to the detection area of ​​the first photoelectric switch, it is detected that the pushing portion has reached the end point.

[0017] According to an embodiment of the present disclosure, the second detection mechanism includes:

[0018] The second photoelectric switch has an adjustable position. When the position of the second photoelectric switch changes, the position of its detection area changes accordingly. During the retraction of the pushing portion, the driving portion moves to move the trigger member. When the trigger member moves to the detection area of ​​the second photoelectric switch, it is detected that the pushing portion has reached the starting point.

[0019] According to an embodiment of the present disclosure, the conveyor line body includes:

[0020] N rollers are configured to convey the pallet by rotating each of the rollers, the N rollers include adjacent first and second rollers, and N is an integer greater than or equal to 2; wherein, when conveying the pallet, the top of the driving part is lower than the bottom of the pallet, and the pushing part is connected to the driving part through the gap between the first and second rollers; the pushing part is configured to push the pallet away from the conveying line along the gap, and the pushing stroke is located within the gap.

[0021] According to an embodiment of the present disclosure, the driving part includes:

[0022] A first pulley; a second pulley, arranged opposite to the first pulley along the second direction; a synchronous belt, sleeved on the outside of the first pulley and the second pulley; the top of the driving part is the top of the synchronous belt, the pushing part is connected to the top of the synchronous belt, and the orthographic projection of the gap overlaps with the orthographic projection of the synchronous belt.

[0023] According to an embodiment of the present disclosure, the driving part further includes:

[0024] The driving mechanism is located below the N rollers, and the synchronous belt is sleeved on the first pulley, the second pulley and the outside of the driving mechanism. Its cross-section is roughly triangular, and the first side of the triangle corresponds to the top of the synchronous belt and is connected to the pushing part.

[0025] According to an embodiment of the present disclosure, the pallet moving device further includes:

[0026] The first mounting portion is used to mount the first detection mechanism, and the position of the first detection mechanism can be adjusted along the extension direction of the second side of the triangle; and / or the second mounting portion is used to mount the second detection mechanism, and the second detection mechanism can be adjusted along the extension direction of the third side of the triangle.

[0027] According to an embodiment of the present disclosure, the top edge of the side panel of the pallet extends horizontally outward to form a frame, and the pallet moving device further includes:

[0028] The baffle is located on the same side of the conveyor line as the pushing part, and the baffle is located above the pushing part; when the tray is conveyed to the predetermined position and the frame abuts against the baffle, a reserved space is defined below the frame and the baffle, and the position of the starting point is located within the reserved space.

[0029] According to an embodiment of the present disclosure, it further includes:

[0030] The sliding mechanism is located on the other side of the conveying line body and is opposite to the pushing portion; wherein the sliding mechanism is connected to the conveying line body and is arranged obliquely, and the sliding mechanism includes:

[0031] The rolling mechanism is installed on the inclined surface of the sliding mechanism and is used for contacting the bottom of the tray leaving the conveyor line body.

[0032] A second aspect of an embodiment of the present disclosure provides an inspection system, comprising: the above-mentioned pallet moving device, the pallet moving device being configured to push the pallet away from the conveyor line body, the pallet being used to accommodate items to be inspected after leaving the conveyor line body; an inspection device, being configured to emit radiation rays to scan the items to be inspected accommodated on the pallet to obtain a scanned image. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0034] FIG1A schematically shows a structural diagram of a pallet moving device according to an embodiment of the present disclosure;

[0035] FIG1B schematically shows a schematic diagram of different pushing strokes according to an embodiment of the present disclosure.

[0036] FIG2 schematically shows a schematic diagram of the pushing portion of the tray pushing mechanism moving to an end position according to an embodiment of the present disclosure;

[0037] FIG3 schematically shows a schematic diagram of the pushing portion of the tray pushing mechanism returning to the starting position according to an embodiment of the present disclosure;

[0038] FIG4 schematically shows a schematic diagram of a tray located at a predetermined position on a conveyor line according to an embodiment of the present disclosure;

[0039] FIG5 schematically shows a schematic diagram of a tray being separated from a conveyor line according to an embodiment of the present disclosure;

[0040] FIG6 schematically shows a schematic diagram of the relative positions of the tray and the tray pushing mechanism according to an embodiment of the present disclosure;

[0041] FIG7 schematically shows one of the structural diagrams of the tray pushing mechanism according to an embodiment of the present disclosure;

[0042] FIG8 schematically shows a second structural diagram of the tray pushing mechanism according to an embodiment of the present disclosure;

[0043] FIG9 schematically shows a schematic diagram of the relative positions of the first detection mechanism and the trigger member according to an embodiment of the present disclosure;

[0044] FIG10 schematically shows a schematic diagram of the relative positions of the second detection mechanism and the trigger member according to an embodiment of the present disclosure;

[0045] FIG11 schematically shows a partial structural diagram of a baffle and a tray according to an embodiment of the present disclosure;

[0046] FIG12 schematically shows a structural diagram of a sliding mechanism according to an embodiment of the present disclosure;

[0047] FIG13 schematically shows one structural diagram of an inspection system according to an embodiment of the present disclosure;

[0048] FIG14 schematically shows a second structural diagram of an inspection system according to an embodiment of the present disclosure;

[0049] Figure numerals: 1: conveyor line body; 11: first roller; 12: second roller; 2: push plate mechanism; 21: driving part; 211: first pulley; 212: second pulley; 213: synchronous belt; 214: driving mechanism; 22: pushing part; 3: first detection mechanism; 31: first photoelectric switch; 32: first mounting part; 4: tray; 5: trigger; 6: second detection mechanism; 61: second photoelectric switch; 62: second mounting part; 7: baffle; 8: sliding mechanism; 81: slide; 82: rolling mechanism; 9: support platform; 10: second conveyor line body; 100: mounting frame. DETAILED DESCRIPTION

[0050] To make the objectives, technical solutions, and advantages of the present disclosure more clearly understood, the present disclosure is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present disclosure, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without inventive effort are intended to fall within the scope of protection of the present disclosure.

[0051] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise," "include," etc. used herein indicate the presence of the features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0052] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0053] In the related art, a thrust is usually applied to the pallet within a fixed pushing stroke. For example, after the distance of the pushing stroke is determined, it is applicable to all types of pallets to ensure that all types of pallets can be pushed to the target position. However, when different pallets have different geometric properties, a fixed pushing stroke will cause a waste of stroke for some pallets. That is, for one type of pallet, the fixed pushing stroke just pushes the pallet away from the conveyor line body, while for another type of pallet, the fixed pushing stroke will not end after pushing the pallet away from the conveyor line body, causing the pushing component to continue to complete the remaining stroke, which causes a waste of stroke and increases the pushing time of a single pallet as well as the overall conveying efficiency and security inspection efficiency.

[0054] In some embodiments of the present disclosure, a pallet moving device and an inspection system are provided. In the process of pushing the pallet away from the conveyor line, the position of the end point of the pushing part is associated with the geometric properties of the pallet. When pushing pallets with different geometric properties, the position of the end point is also different. By precisely controlling the end point position of the pushing part, the pushing stroke meets the predetermined requirements for pallets with different geometric properties, avoiding stroke waste, which is beneficial to improving the conveying efficiency and ensuring the versatility of the pallet moving device.

[0055] The tray moving device according to an embodiment of the present disclosure will be described below with reference to FIG. 1A to FIG. 12 .

[0056] As shown in Figures 1A, 1B, 2, 3, 4, 5 and 6, the pallet moving device provided by the embodiment of the present disclosure includes a conveyor line 1, a tray pushing mechanism 2 and a first detection mechanism 3. The conveyor line 1 is configured to convey the pallet 4 it carries along a first direction; the tray pushing mechanism 2 includes a driving part 21 and a pushing part 22 connected to each other, the pushing part 22 is located on one side of the conveyor line 1, and the pushing part 22 is configured to be driven by the driving part 21 to push the pallet 4 at a predetermined position away from the conveyor line 1 along a second direction, and the second direction intersects with the first direction; wherein, when the pushing part 22 reaches the end point of its pushing stroke, the pallet 4 is pushed away from the conveyor line 1, and the position of the end point is associated with the geometric properties of the pallet 4, so that the pushing stroke meets the predetermined requirements.

[0057] It can be understood that when the tray 4 leaves the conveyor line body 1, it may no longer be in contact with the conveyor line body, or a photoelectric switch may be triggered.

[0058] In some embodiments, the geometric properties of the tray 4 include the length along the second direction, and the pushing stroke meets the predetermined requirements including: for trays 4 of different lengths, the pushing stroke is inversely proportional to the length. For example, referring to Figure 1B, the direction of the arrow is the second direction, and the pushing stroke A, pushing stroke B, and pushing stroke C are different. For trays 4 of different lengths, the pushing stroke is also different. The larger the length value of the tray 4, the shorter its pushing stroke can be. For trays 4 with smaller length values, it may take a certain stroke to make the pushing part contact the tray, or push the tray away from the conveyor line body 1, and its pushing stroke can be longer.

[0059] For example, two adjacent pallets may have different lengths, or two adjacent batches of pallets may have different lengths. The pallet moving device may be equipped with a length detection device, such as an image recognition device or a photoelectric detection device, to detect the length of the pallet to be pushed. The end point of the pushing portion 22 dynamically changes based on the length of the pallet to be pushed. In addition to installing a length detection device, the end point position of the pushing portion 22 can also be manually pre-adjusted based on the length of the pallet to be pushed.

[0060] According to the embodiments of the present disclosure, in the process of pushing the pallet away from the conveyor line, the position of the end point of the pushing part is associated with the geometric properties of the pallet. When pushing pallets with different geometric properties, the position of the end point is also different. By precisely controlling the end point position of the pushing part, the pushing stroke meets the predetermined requirements for pallets with different geometric properties, avoiding waste of stroke, which is beneficial to improving the conveying efficiency and ensuring the versatility of the pallet moving device.

[0061] During the pushing process of the tray 4, the first detection mechanism 3 is configured to detect that the pushing portion 22 has reached the end of its pushing stroke and issue a stop signal. The position of the first detection mechanism 3 corresponds to the position of the end point and is adjustable, pre-determined based on the geometric properties of the pushed tray 4. Therefore, the end point of the pushing stroke can be changed by dynamically changing the position of the first detection mechanism 3.

[0062] Specifically, the pallet moving device includes a conveyor line 1, a tray pushing mechanism 2, a first detection mechanism 3, and a mounting frame 100. The mounting frame 100 is composed of multiple horizontal beams, longitudinal beams, and vertical beams. The conveyor line 1, the tray pushing mechanism 2, and the first detection mechanism 3 are mounted on the mounting frame 100. The first detection mechanism 3 may include a camera, a photoelectric sensor, or a time counter.

[0063] The conveyor line 1 can be a linear conveyor line or a ring conveyor line, and the carrying surface of the conveyor line 1 is used to carry the empty pallet 4. The conveyor line 1 can be a belt drive structure or a roller drive structure, and the conveyor line 1 is used to transport the empty pallet 4 to a predetermined position along a first direction.

[0064] The pushing mechanism 2 is arranged along the second direction, the conveyor line body 1 is a straight conveyor line body, and the second direction is perpendicular to the first direction; the conveyor line body 1 is a ring-shaped conveyor line body, the second direction is consistent with the direction of the center plane of the conveyor line body 1, and the second direction intersects with the first direction.

[0065] The push plate mechanism 2 includes a driving portion 21 and a pushing portion 22 connected to each other. The driving portion 21 drives the pushing portion 22 to reciprocate along the second direction. The pushing portion 22 has a set pushing stroke and can reciprocate between a starting position and an end position.

[0066] In Figure 2, position A is the starting position of the pushing portion 22, and position B is the end position of the pushing portion 22. When the pushing portion 22 moves to position B, the tray 4 is separated from the conveyor line 1. In Figure 3, after the tray 4 is separated from the conveyor line 1, the pushing portion 22, driven by the driving portion 21, returns from position B to position A.

[0067] The conveyor line 1 has a first side and a second side that are opposite to each other, with the starting position corresponding to the first side and the end position corresponding to the second side. Along the second direction, the tray 4 has a first side and a second side that are opposite to each other. The empty tray 4 moves along the conveyor line 1 to a predetermined position. At this point, the pusher 22 is at the starting position, and the pusher 22 contacts the first side of the tray 4, or there is an appropriate distance between the pusher 22 and the first side of the tray 4. When the tray 4 moves to the predetermined position, the driving portion 21 drives the pusher 22 along the second direction from the starting position to the end position, and the pusher 22 pushes the tray 4 from the first side to the second side of the conveyor line 1. When the pusher 22 reaches the end position, the tray 4 separates from the conveyor line 1. After the tray 4 is completely separated from the conveyor line 1, it is transferred to a slide. An operator can remove the empty tray 4 from the slide and place the item to be inspected onto the tray 4. The loaded tray 4 is then transported to the inspection station, where the inspection device at the inspection station inspects the item to be inspected.

[0068] After the tray 4 is completely separated from the conveyor line 1, the driving part 21 drives the pushing part 22 to move along the second direction from the end position toward the starting position until the pushing part 22 returns to the starting position, waiting for the next tray 4 transported by the conveyor line 1.

[0069] The push plate mechanism 2 can be a cylinder, the driving part 21 is a piston rod, the pushing part 22 is a push plate, the push plate is connected to the free end of the piston rod, and the linear reciprocating motion of the piston rod drives the push plate to reciprocate in the second direction. The push plate mechanism 2 can also be a screw drive structure, the driving part 21 is a screw and a screw nut, the pushing part 22 is a push plate, the push plate is connected to the screw nut, and the linear reciprocating motion of the screw nut drives the push plate to reciprocate in the second direction. The push plate mechanism 2 can also be a belt drive structure, the driving part 21 is a synchronous belt, a connecting block is fixedly connected to the synchronous belt, the pushing part 22 is a push plate, the push plate is connected to the connecting block, and the reciprocating rotation of the synchronous belt drives the push plate to reciprocate in the second direction.

[0070] After the tray 4 is completely separated from the conveyor line body 1, if the detection mechanism is not provided, the pushing portion 22 will continue to move forward along the second direction, thereby prolonging the time for the pushing portion 22 to return to the starting position, thereby reducing the conveying efficiency. By providing the first detection mechanism 3, when the pushing portion 22 reaches the end position of the pushing stroke, the first detection mechanism 3 sends a stop pushing signal, after which the driving portion 21 drives the pushing portion 22 to move along the second direction from the second side of the conveyor line body 1 toward the first side until it returns to the starting position. By providing the first detection mechanism 3, the end position and return time of the pushing portion 22 can be accurately controlled.

[0071] The first detection mechanism 3 corresponds to the end position and can be a photoelectric switch installed below the second side of the conveyor line 1. The photoelectric switch detects that the tray 4 is separated from the conveyor line 1 and issues a stop push signal. Alternatively, the photoelectric switch can be installed below the first side of the conveyor line 1. When the pusher 22 moves to the end position, the photoelectric switch is triggered and issues a stop push signal.

[0072] The installation position of the first detection mechanism 3 can be adjusted based on the geometric properties of the tray 4, including the relationship between the tray 4's shape, dimensions, size, position, and orientation. Based on the geometric properties of the tray 4, the installation position of the first detection mechanism 3 can be adjusted horizontally or vertically so that after the tray 4 separates from the conveyor line 1, the first detection mechanism 3 can detect the separation of the tray 4 from the conveyor line 1 and issue a stop push signal.

[0073] The installation position of the first detection mechanism 3 is adjusted according to the shape and size of the tray 4 to prevent the first detection mechanism 3 from issuing a stop signal prematurely before the pusher 22 reaches its final position, or delaying the issuance of the stop signal after the pusher 22 reaches its final position. The position of the first detection mechanism 3 is adjusted according to the geometric properties of the tray 4 to ensure that the first detection mechanism 3 issues a stop signal promptly when the pusher 22 reaches its final position, thereby improving the versatility of the tray moving device.

[0074] The working process of the pallet moving device is described in detail below.

[0075] The conveyor line 1 carries an empty pallet 4 on its supporting surface. The conveyor line 1 transports the pallet 4 along a first direction to a predetermined position. After the pallet 4 reaches the predetermined position, the pallet 4 stops moving in the first direction. When the pallet 4 reaches the predetermined position, the pusher 22 is located at the starting position, and the pusher 22 is opposite the first side surface of the pallet 4. The driving portion 21 drives the pusher 22 to move from the starting position to the end position along the second direction, and the pusher 22 pushes the pallet 4 toward the second side of the conveyor line 1. When the pusher 22 reaches the end position of its pushing stroke, the pallet 4 separates from the conveyor line 1. The first detection mechanism 3 issues a stop pushing signal, and the driving portion 21 drives the pusher 22 to move from the end position to the starting position along the second direction until the pusher 22 returns to the starting position. Based on the stop pushing signal issued by the first detection mechanism 3, the end position of the pushing stroke of the pusher 22 can be precisely controlled, and the return time can also be precisely controlled, thereby improving conveying efficiency.

[0076] After the tray 4 is separated from the conveyor line 1, the tray 4 is transferred to the slide. The operator can take the empty tray 4 from the slide and put the items to be inspected into the tray 4. The tray 4 loaded with the items to be inspected is further transported to the inspection station, and the items to be inspected are inspected by the inspection device at the inspection station.

[0077] In the embodiment of the present disclosure, the conveyor line body 1 conveys the pallet 4 it carries to a predetermined position along a first direction, the driving part 21 drives the pushing part 22 to move along a second direction from the starting position toward the end position, and the pushing part 22 pushes the pallet 4 from the first side of the conveyor line body 1 toward the second side until the pallet 4 is separated from the conveyor line body 1, and the pushing part 22 moves to the end position. The first detection mechanism 3 sends a stop pushing signal, and the driving part 21 drives the pushing part 22 to return from the end position to the starting position along the second direction, and continues to convey the next pallet 4. The position of the first detection mechanism 3 is adaptively adjusted according to the geometric properties of the pallet 4. The first detection mechanism 3 accurately controls the end position and return time of the pushing part 22, which is conducive to improving the conveying efficiency while ensuring the versatility of the pallet moving device.

[0078] As shown in Figures 2, 3, and 6, in an optional embodiment, after the stop push signal is issued, the push portion 22 is driven by the driving portion 21 to retract to the starting point of the push stroke. The tray moving device also includes a second detection mechanism 6, which is arranged opposite to the first detection mechanism 3 along the second direction. The second detection mechanism 6 is configured to detect that the push portion 22 has reached the starting point and issue a stop retraction signal. The second detection mechanism 6 may include a camera, a photoelectric sensor, or a time counter.

[0079] Specifically, the second detection mechanism 6 is arranged opposite to the first detection mechanism 3. If the first detection mechanism 3 is located below the first side of the conveyor line body 1, the second detection mechanism 6 is located below the second side of the conveyor line body 1; or if the first detection mechanism 3 is located below the second side of the conveyor line body 1, the second detection mechanism 6 is located below the first side of the conveyor line body 1. It is understandable that the first detection mechanism 3 and the second detection mechanism 6 can also be installed above the conveyor line body 1.

[0080] The driving portion 21 drives the pushing portion 22 to move along the second direction from the starting position to the end position. When the pushing portion 22 reaches the end position, the tray 4 separates from the conveyor line 1. At this time, the first detection mechanism 3 sends a stop push signal, and the driving portion 21 drives the pushing portion 22 to move along the second direction from the end position toward the starting position. The pushing portion 22 returns to the starting position. The second detection mechanism 6 sends a stop retraction signal, and the pushing portion 22 stops moving. Thus, the pushing portion 22 completes one working stroke. The pushing portion 22 returns to the starting position and waits to push the next conveyed tray 4.

[0081] When the pushing portion 22 returns to the starting position, the second detection mechanism 6 issues a stop-retract signal, which prevents the pushing portion 22 from continuing to move forward. If the second detection mechanism 6 is not provided, the pushing portion 22 returns to the starting position and continues to move forward, resulting in an excessively large distance between the pushing portion 22 and the first side surface of the tray 4 at the predetermined position, thereby increasing the time it takes for the pushing portion 22 to push the tray 4 at the predetermined position until it separates from the conveyor line 1. When the pushing portion 22 returns to the starting position, the second detection mechanism 6 issues a stop-retract signal. The second detection mechanism 6 allows for precise control of the starting position and pushing time of the pushing portion 22, thereby improving conveying efficiency.

[0082] In the embodiment of the present disclosure, the first detection mechanism 3 and the second detection mechanism 6 are arranged opposite to each other along the second direction. When the pushing part 22 reaches the end position, the first detection mechanism 3 sends a stop pushing signal, the pushing part 22 returns to the starting position, and the second detection mechanism 6 sends a stop retraction signal. The end position and return time of the pushing part 22 are precisely controlled by the first detection mechanism 3, and the starting position and pushing time of the pushing part 22 are precisely controlled by the second detection mechanism 6, thereby effectively improving the conveying efficiency of the pallet moving device.

[0083] In an optional embodiment, the position of the second detection mechanism 6 corresponds to the position of the starting point, and the position of the second detection mechanism 6 is adjustable, which is pre-adjusted and determined according to the geometric properties of the pushed tray 4; wherein, when the pushing portion 22 is located at the starting point, the distance between the position of the starting point and the contact surface of the pushed tray 4 is less than or equal to a preset distance, and greater than or equal to 0.

[0084] Specifically, the installation position of the second detection mechanism 6 is adjusted accordingly according to the shape and size of the tray 4. According to the geometric properties of the tray 4, the installation position of the second detection mechanism 6 can be adjusted in the horizontal direction, or in the vertical direction.

[0085] The installation position of the second detection mechanism 6 ensures that the pushing portion 22 returns to the starting position and the distance between the pushing portion 22 and the contact surface of the tray 4 at the predetermined position is less than or equal to the predetermined distance, where the contact surface of the tray 4 is the first side surface of the tray 4. It is understood that when the tray 4 is at the predetermined position, the distance between the pushing portion 22 and the first side surface of the tray 4 is greater than or equal to zero.

[0086] The pushing portion 22 is at the starting position, and the distance between the pushing portion 22 and the contact surface of the tray 4 is 0. In this state, the pushing time of the pushing portion 22 to separate the tray 4 from the conveyor line body 1 is the shortest. The pushing portion 22 is at the starting position, and the distance between the pushing portion 22 and the contact surface of the tray 4 is less than or equal to the preset distance. The preset distance is set according to actual needs and can be 10 to 50 mm.

[0087] The distance between the starting position of the pushing portion 22 and the contact surface of the tray 4 at the predetermined position is controlled within a preset distance range, which can ensure that the tray 4 will not interfere with or collide with the pushing portion 22 during the movement along the first direction to the predetermined position, and can also control the pushing time to avoid the pushing portion 22 being too far away from the tray 4 at the predetermined position, resulting in an increase in the pushing time.

[0088] In the embodiment of the present disclosure, the second detection mechanism 6 has a corresponding relationship with the starting position of the pushing portion 22. The position of the second detection mechanism 6 is adaptively adjusted according to the geometric properties of the tray 4. The pushing portion 22 returns to the starting position, and the second detection mechanism 6 sends a stop and retraction signal on time, which ensures that the tray 4 can be smoothly transported to the predetermined position along the first direction, and can also ensure that the distance between the pushing portion 22 and the contact surface of the tray 4 at the predetermined position is within the preset distance range, so as to achieve precise control of the pushing time and ensure the reliable operation of the tray moving device.

[0089] As shown in Figures 6, 7 and 9, in an optional embodiment, a trigger member 5 is provided on the driving portion 21, and the first detection mechanism 3 includes a first photoelectric switch 31, whose position is adjustable. When the position of the first photoelectric switch changes, the position of its detection area changes accordingly; wherein, in the process of pushing the tray 4, the driving portion 21 moves to move the trigger member 5, and when the trigger member 5 moves to the detection area of ​​the first photoelectric switch 31, it is determined that the pushing portion 22 has reached the end position.

[0090] Specifically, the first detection mechanism 3 includes a photoelectric switch, defined as a first photoelectric switch 31, whose position is adjustable. A trigger member 5 is mounted on the driving portion 21. The trigger member 5 can be an L-shaped bent plate connected to the driving portion 21 via a fastener. For example, the first photoelectric switch 31 is mounted below the first side of the conveyor line 1, with the trigger member 5 and the pusher 22 located on opposite sides of the driving portion 21.

[0091] The driving portion 21 drives the pushing portion 22 to move along the second direction from the starting position toward the end position, and the trigger member 5 moves from the second side of the conveyor line 1 toward the first side of the conveyor line 1. The pushing portion 22 reaches the end position, at which time the trigger member 5 moves to a position corresponding to the first photoelectric switch 31. The light beam emitted by the first photoelectric switch 31 is blocked by the trigger member 5, and the first photoelectric switch 31 issues a stop push signal. The driving portion 21 then drives the pushing portion 22 to move along the second direction from the end position toward the starting position, and the trigger member 5 moves from the first side of the conveyor line 1 toward the second side of the conveyor line 1.

[0092] The trigger member 5 and the pushing part 22 are both connected to the driving part 21. The driving part 21 drives the pushing part 22 and the trigger member 5 to move synchronously. In the process of pushing the tray 4, the trigger member 5 moves to the detection area of ​​the first photoelectric switch 31. At this time, the pushing part 22 moves to the end position. The trigger member 5 and the first photoelectric switch 31 determine that the pushing part 22 has reached the end position. The first photoelectric switch 31 sends a stop pushing signal. The trigger member 5 and the pushing part 22 move synchronously with the driving part 21, and the detection precision and accuracy are high.

[0093] As shown in Figures 6, 7, 8 and 10, in an optional embodiment, the second detection mechanism 6 includes a second photoelectric switch 61, and the position of the second photoelectric switch 61 is adjustable. When the position of the first photoelectric switch changes, the position of its detection area changes accordingly; wherein, during the retraction process of the pushing portion 22, the driving portion 21 moves to move the trigger member 5, and when the trigger member 5 moves to the detection area of ​​the second photoelectric switch 61, it is determined that the pushing portion 22 has reached the starting position.

[0094] Specifically, the second detection mechanism 6 includes a photoelectric switch, which is defined as a second photoelectric switch 61. The position of the second photoelectric switch 61 is adjustable. The first photoelectric switch 31 is installed below the first side of the conveyor line 1, and the second photoelectric switch 61 is installed below the second side of the conveyor line 1.

[0095] The driving portion 21 drives the pushing portion 22 to move along the second direction from the starting position toward the end position, and the trigger member 5 moves from the second side of the conveyor line body 1 toward the first side of the conveyor line body 1. The pushing portion 22 reaches the end position. At this time, the trigger member 5 moves to the position corresponding to the first photoelectric switch 31. The light beam emitted by the first photoelectric switch 31 is blocked by the trigger member 5, and the first photoelectric switch 31 sends a stop push signal. Thereafter, the driving portion 21 drives the pushing portion 22 to move along the second direction from the end position toward the starting position, and the trigger member 5 moves from the first side of the conveyor line body 1 toward the second side of the conveyor line body 1. The pushing portion 22 returns to the starting position. At this time, the trigger member 5 moves to the position corresponding to the second photoelectric switch 61. The light beam emitted by the second photoelectric switch 61 is blocked by the trigger member 5, and the second photoelectric switch 61 sends a stop retreat signal.

[0096] The trigger member 5 and the pushing portion 22 move synchronously with the driving portion 21. During the process of the pushing portion 22 pushing the tray 4 to move, the trigger member 5 moves to the detection area of ​​the first photoelectric switch 31, and the first photoelectric switch 31 sends a stop pushing signal to determine that the pushing portion 22 has reached the end position; during the process of the pushing portion 22 returning, the trigger member 5 moves to the detection area of ​​the second photoelectric switch 61, and the second photoelectric switch 61 sends a stop retraction signal to determine that the pushing portion 22 has returned to the starting position.

[0097] In the embodiment of the present disclosure, the first photoelectric switch 31 , the second photoelectric switch 61 and the trigger member 5 are used to determine whether the pushing portion 22 reaches the end position or returns to the starting position, and the detection precision and accuracy are high.

[0098] As shown in Figure 5, in an optional embodiment, the conveyor line 1 includes N rollers, and the N rollers are configured to convey the pallet 4 through the rotation of each roller, and the N rollers include adjacent first rollers 11 and second rollers 12, and N is an integer greater than or equal to 2; wherein, when conveying the pallet 4, the top of the driving part 21 is lower than the bottom of the pallet 4, and the pushing part 22 is connected to the driving part 21 through the gap between the first roller 11 and the second roller 12; the pushing part 22 is configured to push the pallet 4 away from the conveyor line 1 along the gap, and the pushing stroke is within the gap.

[0099] Specifically, the conveyor line 1 includes a plurality of rollers, at least two of which are arranged linearly or circumferentially. For example, the rollers are arranged circumferentially and are tapered, with the small ends of the rollers corresponding to the first side of the conveyor line 1 and the large ends of the rollers corresponding to the second side of the conveyor line 1. One of the rollers is connected to the drive shaft of the motor.

[0100] The two adjacent rollers located in the middle of the conveyor line 1 are defined as the first roller 11 and the second roller 12. The gap between the first roller 11 and the second roller 12 is suitable for accommodating the connecting block. The top of the driving portion 21 is lower than the top contour of the rollers. The connecting block is connected to the driving portion 21. The pushing portion 22 is connected to the driving portion 21 through the connecting block. The length and width of the pushing portion 22 are compatible with the dimensions of the tray 4.

[0101] The driving portion 21 is located below the top contour of the first roller 11 and the second roller 12, the connecting block is located between the first roller 11 and the second roller 12, and the pushing portion 22 is located above the top contour of the first roller 11 and the second roller 12. The driving portion 21 drives the connecting block to reciprocate along the gap between the first roller 11 and the second roller 12, thereby causing the pushing portion 22 to reciprocate in the second direction. This structure fully utilizes the space above and below the rollers, which contributes to the compactness of the overall structure.

[0102] In the embodiment disclosed herein, the conveyor line 1 includes multiple rollers, which convey the pallet 4 by rotating the multiple rollers to achieve smooth transportation of the pallet 4. The upper space and lower space of the multiple rollers are used to set the driving part 21 and the pushing part 22, which is conducive to the compactness of the overall structure.

[0103] As shown in Figures 5, 6, 7 and 8, in an optional embodiment, the driving portion 21 includes a first pulley 211, a second pulley 212 and a synchronous belt 213; at least one of the first pulley 211 and the second pulley 212 can be a driving wheel, and the two are arranged opposite to each other along the second direction; the synchronous belt 213 is sleeved on the outside of the first pulley 211 and the second pulley 212; the top of the driving portion 21 is the top of the synchronous belt 213, the pushing portion 22 is connected to the top of the synchronous belt 213, and the orthographic projection of the gap overlaps with the orthographic projection of the synchronous belt 213.

[0104] Specifically, the driving portion 21 includes a first pulley 211 and a second pulley 212, which are spaced apart along the second direction. One of the first pulley 211 and the second pulley 212 is located near the first side of the conveyor line 1, and the other is located near the second side of the conveyor line 1. The synchronous belt 213 is sleeved around the first pulley 211 and the second pulley 212. One of the first pulley 211 and the second pulley 212 is a driving pulley, and the other is a driven pulley; or both the first pulley 211 and the second pulley 212 are driven pulleys, and the first pulley 211 and the second pulley 212 are driven by a driving member. The first pulley 211 and the second pulley 212 can rotate synchronously in the forward or reverse direction.

[0105] The position of the synchronous belt 213 corresponds to the gap between the first roller 11 and the second roller 12. A connecting block is connected to the top of the synchronous belt 213, and the pusher 22 is connected to the connecting block. The reciprocating rotation of the synchronous belt 213 drives the pusher 22 from the starting position to the end position, and vice versa. The belt drive facilitates the smooth movement of the pusher 22, effectively preventing the tray 4 from shifting during the pushing process.

[0106] As shown in Figures 6, 7 and 8, in an optional embodiment, the first pulley 211 and the second pulley 212 are not driving wheels, and the driving portion 21 also includes a driving mechanism 214, which is located below the N rollers. The synchronous belt 213 is mounted on the outside of the first pulley 211, the second pulley 212 and the driving mechanism 214, and its cross-section is roughly triangular. The first side of the triangle corresponds to the top of the synchronous belt 213 and is connected to the pushing portion 22.

[0107] Specifically, the driving mechanism 214 includes a driving pulley and a motor. The driving pulley and the motor can be integrated into one. The first pulley 211 and the second pulley 212 are arranged at intervals in the horizontal direction. The driving pulley is located below the first pulley 211 and the second pulley 212, and the driving pulley is located in the area between the first pulley 211 and the second pulley 212. The driving pulley, the first pulley 211 and the second pulley 212 form a triangular structure.

[0108] The first side of the triangle corresponds to the top of the synchronous belt 213, the second and third sides of the triangle correspond to the sides of the synchronous belt 213, and the trigger member 5 is installed on the side of the synchronous belt 213. As the synchronous belt 213 rotates, the trigger member 5 moves to the detection area of ​​the first photoelectric switch 31, or moves to the detection area of ​​the second photoelectric switch 61.

[0109] By adjusting the vertical distance between the driving pulley and the first pulley 211 and the second pulley 212, or adjusting the installation position of the trigger member 5 on the side of the synchronous belt 213, it is ensured that the pushing part 22 moves to the end position, the trigger member 5 moves to the detection area of ​​the first photoelectric switch 31, the pushing part 22 moves to the starting position, and the trigger member 5 moves to the detection area of ​​the second photoelectric switch 61.

[0110] In the embodiment of the present disclosure, this structure facilitates flexible adjustment of the moving trajectory of the trigger member 5 according to the pushing stroke of the pushing portion 22, and further facilitates flexible adjustment of the installation positions of the first photoelectric switch 31, the second photoelectric switch 61 and the trigger member 5 according to the geometric properties of the tray 4.

[0111] As shown in Figures 6, 7, 8, 9 and 10, in an optional embodiment, the trigger member 5 is located outside the synchronous belt 213, and the pallet moving device also includes a first mounting portion 32, the first mounting portion 32 is used to install a first detection mechanism, such as a first photoelectric switch 31, the position of the first photoelectric switch can be adjusted along the extension direction of the second side of the triangle, and / or, a second mounting portion 62, the second mounting portion 62 is used to install a second detection mechanism, such as a second photoelectric switch 61, the second photoelectric switch 61 can be adjusted along the extension direction of the third side of the triangle.

[0112] Specifically, the first mounting portion 32 is used to mount the first photoelectric switch 31. The first mounting portion 32 is connected to the mounting frame 100 via a connecting plate, and the mounting surface of the first mounting portion 32 is parallel to the second side of the triangle. The second mounting portion 62 is disposed opposite the first mounting portion 32 and is used to mount the second photoelectric switch 61. The second mounting portion 62 is connected to the mounting frame 100 via a connecting plate, and the mounting surface of the second mounting portion 62 is parallel to the third side of the triangle.

[0113] Taking the first mounting part 32 as an example, a strip hole is provided on the mounting surface of the first mounting part 32, and a mounting hole is provided on the first photoelectric switch 31. The first photoelectric switch 31 is connected to the first mounting part 32 through a fastener. The mounting position of the first photoelectric switch 31 is adjusted by adjusting the centering position of the mounting hole and the strip hole.

[0114] If the pushing stroke of the pushing part 22 is longer, the first photoelectric switch 31 is adjusted upward along the extension direction of the second side of the triangle, so that the first photoelectric switch 31 moves toward the direction close to the first pulley 211; if the pushing stroke of the pushing part 22 is shorter, the first photoelectric switch 31 is adjusted downward along the extension direction of the second side of the triangle, so that the first photoelectric switch 31 moves toward the direction close to the active pulley.

[0115] The adjustment method of the installation position of the second photoelectric switch 61 is the same as the adjustment method of the installation position of the first photoelectric switch 31, and will not be repeated here.

[0116] In the embodiment of the present disclosure, the installation position of the first photoelectric switch 31 is adjusted by the first installation part 32, and the installation position of the second photoelectric switch 61 is adjusted by the second installation part 62, so that the installation positions of the first photoelectric switch 31 and the second photoelectric switch 61 can be flexibly adjusted according to the pushing stroke of the pushing part 22.

[0117] As shown in Figure 11, in an optional embodiment, the top edge of the side panel of the tray 4 extends horizontally outward to form a frame, and the tray 4 moving device also includes a baffle 7, and the baffle 7 and the pushing part 22 are located on the same side of the conveyor line body 1, and the baffle 7 is located above the pushing part 22; when the tray 4 is conveyed to the predetermined position and the frame abuts against the baffle 7, a reserved space is defined below the frame and the baffle 7, and the starting point is located within the reserved space.

[0118] Specifically, the baffle 7 is fixed on the mounting frame 100, and the baffle 7 is located above the pushing portion 22. The top edge of the side panel of the tray 4 extends outward in the horizontal direction to form a frame. The tray 4 is transported to a predetermined position, and the frame of the tray 4 abuts against the baffle 7. A reserved space is defined below the frame and the baffle 7, and the starting position of the pushing portion 22 is located within the reserved space.

[0119] The pusher 22 returns to its starting position. If the pusher 22 is outside the reserved space, the tray 4 may interfere with the pusher 22 during its movement in the first direction, preventing the tray 4 from reaching the predetermined position. The reserved space is defined by the frame and the baffle 7 to ensure that the tray 4 can smoothly move in the first direction to the predetermined position.

[0120] As shown in Figures 1A, 2, 3 and 12, in an optional embodiment, the pallet moving device also includes a sliding mechanism 8, which is located on the other side of the conveyor line body 1 and opposite to the pushing part 22; wherein, the sliding mechanism 8 is connected to the conveyor line body 1 and is inclined, and the sliding mechanism 8 includes a rolling mechanism 82, which is installed on the inclined surface of the sliding mechanism 8 and is used to contact the bottom of the pallet 4 leaving the conveyor line body 1.

[0121] Specifically, the sliding mechanism 8 is located on the second side of the conveyor line body 1. The sliding mechanism 8 includes a slide 81 and a rolling mechanism 82. The slide 81 is arranged at an angle. The slide 81 has a first end close to the conveyor line body 1 and a second end away from the conveyor line body 1. The first end of the slide 81 is not higher than the top contour line of multiple rollers.

[0122] The rolling mechanism 82 includes balls, and a plurality of balls are arranged at intervals on the slide 81, and the rolling surfaces of the balls are used to contact the bottom surface of the tray 4. Alternatively, the rolling mechanism 82 includes a plurality of guide wheels, and a plurality of guide wheels are arranged at intervals on the slide 81, and the wheel surfaces of the guide wheels are used to contact the bottom surface of the tray 4.

[0123] After the pushing part 22 moves to the end position and the tray 4 is separated from the conveyor line body 1, the tray 4 slides from the first end of the slide 81 to the second end under the action of gravity. Multiple balls reduce the friction force of the tray 4 during the sliding process, allowing the tray 4 to slide smoothly to the second end of the slide 81.

[0124] In the embodiment of the present disclosure, by providing a sliding mechanism 8, the tray 4 separated from the conveying line 1 can slide smoothly to the second end of the slide 81, and the tray 4 can be transported without providing a power source.

[0125] As shown in Figures 13 and 14, the present disclosure also provides a detection system, which includes a pallet moving device and an inspection device. The pallet moving device is configured to push the pallet 4 away from the conveyor line body 1, and the pallet 4 is used to accommodate items to be inspected after leaving the conveyor line body 1; the inspection device is configured to emit radiation rays to scan the items to be inspected accommodated in the pallet 4 to obtain a scanned image.

[0126] Specifically, the pallet moving device has a two-layer structure. The first layer, i.e. the bottom layer, is provided with a conveyor line body 1 and a sliding mechanism 8. The conveyor line body 1 on the bottom layer is defined as the first conveyor line body. The second layer, i.e. the top layer, is provided with a loading platform 9 and a second conveyor line body 10.

[0127] The first conveyor line is used to transport the empty pallet 4 to a predetermined position, the driving part 21 and the pushing part 22 are used to push the pallet 4 to the sliding mechanism 8, the loading platform 9 is used to place the pallet 4 taken from the sliding mechanism 8, and the items to be inspected are placed in the pallet 4 on the loading platform 9, and then the pallet 4 loaded with the items to be inspected is pushed onto the second conveyor line 10. The second conveyor line 10 is used to transport the pallet 4 loaded with the items to be inspected to the inspection station. The inspection station is provided with a detection device, which emits radiation rays to scan the items to be inspected placed in the pallet 4 to inspect them.

[0128] The following is a detailed description of the working process of the inspection system.

[0129] The first conveyor line body transports the empty pallet 4 to a predetermined position along the first direction, and the driving part 21 drives the pushing part 22 to move along the second direction from the starting position toward the end position, and the pushing part 22 pushes the pallet 4 from the first side of the first conveyor line body toward the second side of the first conveyor line body. When the pushing part 22 reaches the end position, the trigger part 5 moves to the detection area of ​​the first photoelectric switch 31, and the first photoelectric switch 31 sends a stop push signal. Afterwards, the driving part 21 drives the pushing part 22 to move along the second direction from the end position toward the starting position, and the pushing part 22 returns to the starting position. The trigger part 5 moves to the detection area of ​​the second photoelectric switch 61, and the second photoelectric switch 61 sends a stop retraction signal. The pushing part 22 waits at the starting position for the next pallet 4 to be transported.

[0130] The pushing portion 22 reaches the end position, the tray 4 is separated from the first conveyor line body, and the tray 4 slides along the inclined slide 81, and the tray 4 slides from the first end of the slide 81 to the second end of the slide 81. At the second end of the slide 81, the operator takes the tray 4 and places the tray 4 on the top load platform 9. The items to be inspected are placed in the tray 4 on the load platform 9. The tray 4 loaded with the items to be inspected can be pushed manually onto the second conveyor line body 10, or the tray 4 loaded with the items to be inspected can be pushed onto the second conveyor line body 10 by a pushing mechanism. The second conveyor line body 10 transports the tray 4 loaded with the items to be inspected to the inspection station. The detection device at the inspection station emits radiation rays to scan the items to be inspected placed in the tray 4 to inspect them.

[0131] The first photoelectric switch 31, the second photoelectric switch 61, and the trigger 5 precisely control the starting position, end position, pushing duration, and return duration of the pusher 22. The structural arrangement of the first pulley 211, the second pulley 212, the timing belt 213, and the driving pulley facilitates flexible adjustment of the installation positions of the first photoelectric switch 31, the second photoelectric switch 61, and the trigger 5. This inspection system effectively improves both conveying and detection efficiency.

[0132] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure shall be subject to the scope of protection of the claims.

Claims

1. A pallet moving device, comprising: A conveyor line body is configured to convey the pallet it carries along a first direction; a tray pushing mechanism comprising a driving portion and a pushing portion connected to each other, the pushing portion being located on one side of the conveyor line body, the pushing portion being configured to be driven by the driving portion to push the tray at a predetermined position along a second direction intersecting the first direction; When the pushing portion reaches the end point of its pushing stroke, the pallet is pushed away from the conveyor line body, and the position of the end point is associated with the geometric properties of the pallet, so that the pushing stroke meets predetermined requirements.

2. The pallet moving device according to claim 1, wherein: The geometric properties of the tray include the length along the second direction, and the pushing stroke meets the predetermined requirements including: For pallets of different lengths, the pushing stroke is inversely proportional to the length.

3. The pallet moving device according to claim 1, further comprising: a first detection mechanism, wherein, during the process of pushing the tray, the first detection mechanism is configured to detect that the pushing portion reaches the end point and issue a stop pushing signal; The position of the first detection mechanism corresponds to the position of the end point, and the position of the first detection mechanism is adjustable, which is pre-adjusted and determined according to the geometric properties of the pushed tray so that the pushing stroke meets the predetermined requirements.

4. The pallet moving device according to claim 3, wherein: After the stop pushing signal is issued, the pushing portion is driven by the driving portion to retreat to the starting point of the pushing stroke; The tray moving device further includes: The second detection mechanism is arranged opposite to the first detection mechanism along the second direction, and the second detection mechanism is configured to send a stop and retract signal when detecting that the pushing portion reaches the starting point.

5. The pallet moving device according to claim 4, wherein: The position of the second detection mechanism corresponds to the position of the starting point, and the position of the second detection mechanism is adjustable and is pre-adjusted and determined according to the geometric properties of the pushed tray; When the pushing portion is located at the starting point, the distance between the starting point and the contact surface of the pushed tray is less than or equal to a preset distance and greater than or equal to 0.

6. The pallet moving device according to claim 4, wherein: The driving portion is provided with a triggering member, and the first detection mechanism includes: A first photoelectric switch, the position of which is adjustable, wherein when the position of the first photoelectric switch changes, the position of its detection area changes accordingly; In the process of pushing the tray, the driving portion moves to move the trigger member, and when the trigger member moves to the detection area of ​​the first photoelectric switch, it is detected that the pushing portion has reached the end point.

7. The pallet moving device according to claim 6, wherein: The second detection mechanism includes: a second photoelectric switch, the position of which is adjustable, and when the position of the second photoelectric switch changes, the position of its detection area changes accordingly; In the process of the pushing portion retreating, the driving portion moves to move the trigger member. When the trigger member moves to the detection area of ​​the second photoelectric switch, it is detected that the pushing portion has reached the starting point.

8. The pallet moving device according to claim 4, wherein: The conveyor line body comprises: N rollers are configured to convey the pallet by rotating each of the rollers, the N rollers including adjacent first and second rollers, and N is an integer greater than or equal to 2; Wherein, when the tray is transported, the top of the driving portion is lower than the bottom of the tray, and the pushing portion is connected to the driving portion through the gap between the first roller and the second roller; The pushing portion is configured to push the tray away from the conveyor line along the gap, and the pushing stroke is located within the gap.

9. The pallet moving device according to claim 8, wherein: The driving part includes: First pulley; a second pulley, arranged opposite to the first pulley along the second direction; A synchronous belt, sleeved on the outer sides of the first pulley and the second pulley; The top of the driving portion is the top of the synchronous belt, the pushing portion is connected to the top of the synchronous belt, and the orthographic projection of the gap overlaps with the orthographic projection of the synchronous belt.

10. The pallet moving device according to claim 9, wherein: The driving part also includes: The driving mechanism is located below the N rollers, and the synchronous belt is sleeved on the first pulley, the second pulley and the outside of the driving mechanism. Its cross-section is roughly triangular, and the first side of the triangle corresponds to the top of the synchronous belt and is connected to the pushing part.

11. The pallet moving device according to claim 10, wherein: The tray moving device further includes: a first mounting portion for mounting the first detection mechanism, wherein the position of the first detection mechanism can be adjusted along the extension direction of the second side of the triangle, and / or The second mounting portion is used to mount the second detection mechanism, and the second detection mechanism can be adjusted along the extension direction of the third side of the triangle.

12. The pallet moving device according to claim 5, wherein: The top edge of the side plate of the pallet extends horizontally outward to form a frame, and the pallet moving device further includes: a baffle, located on the same side of the conveyor line body as the pushing portion, and the baffle is located above the pushing portion; When the tray is transported to the predetermined position and the frame abuts against the baffle, a reserved space is defined below the frame and the baffle, and the starting point is located within the reserved space.

13. The pallet moving device according to claim 1, further comprising: A sliding mechanism is located on the other side of the conveying line body and is opposite to the pushing part; Wherein, the sliding mechanism is connected to the conveying line body and is arranged obliquely, and the sliding mechanism includes: The rolling mechanism is installed on the inclined surface of the sliding mechanism and is used for contacting the bottom of the tray leaving the conveyor line body.

14. An inspection system comprising: The pallet moving device according to any one of claims 1 to 13, wherein the pallet moving device is configured to push the pallet away from the conveyor line, and the pallet is used to accommodate an article to be inspected after leaving the conveyor line; The inspection device is configured to emit radiation to scan the items to be inspected contained in the tray to obtain a scan image.

Images