Automatic centering device and method for cargo in irradiation system

Abstract

The present invention relates to the field of irradiation technology, and specifically to an automatic centering device for cargo in an irradiation system and a method thereof. The device comprises a guide device and a power device installed on a roller conveyor; the guide device is installed on one side of the roller conveyor and is composed of an inclined guide roller and a straight guide roller, one end of the inclined guide roller is installed on the frame of the roller conveyor through a connecting assembly, and the inclined guide roller is hinged to the straight guide roller through a connecting section; the movable end of the power device is fixedly connected to the straight guide roller and is used to drive the straight guide roller to move in a direction perpendicular to the cargo conveying direction; the roller conveyor comprises two straight transmission sections and an inclined roller transmission section, both ends of the inclined roller transmission section are connected to the straight transmission section, and the rollers on the inclined roller transmission section are tilted toward the straight guide roller. The present invention can drive the guide device to automatically adjust its position, so that it can be used for cargo of different sizes and is suitable for further promotion and use.

Description

Technical Field

[0001] The present invention relates to the field of irradiation technology, in particular to an automatic centering device for goods in an irradiation system and a method thereof. Background Art

[0002] During irradiation production, the electron beam has a beam width limitation. In order to ensure the rational use of irradiation energy, the goods are required to pass through the irradiation area under the beam in the center during production. This can reduce the irradiation range of the electron beam, concentrate the radiation energy, and improve the irradiation efficiency.

[0003] The traditional method involves installing a clamping guide device before the goods pass through the irradiation area. The position of the guide device is manually adjusted according to the size of the goods. Therefore, after irradiating the same batch of goods of the same size, the accelerator must be shut down before producing goods of different sizes. The accelerator must wait for the harmful gases to be released before the guide device can be manually adjusted. After the guide device is adjusted, on-site personnel are evacuated, and after confirming safety, the accelerator is restarted. Once the power reaches the required level, the next batch of irradiation can be carried out. Due to the different sizes of the goods, the accelerator must be frequently started and stopped, and each start and stop must be strictly operated according to the process flow, resulting in wasted time and reduced overall efficiency. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an automatic centering device for cargo in an irradiation system and a method thereof.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0006] An automatic centering device for goods in an irradiation system, comprising a guide device and a power device installed on a roller conveyor;

[0007] The guide device is installed on one side of the roller conveyor and consists of an inclined guide roller and a straight guide roller. The inclined guide roller is close to the input end of the roller conveyor, and the straight guide roller is close to the output end of the roller conveyor. One end of the inclined guide roller is installed on the frame of the roller conveyor through a connecting assembly, and the other end of the inclined guide roller is hinged to the straight guide roller through a connecting section.

[0008] The moving end of the power device is fixedly connected to the straight guide roller, and is used to drive the straight guide roller to move in a direction perpendicular to the direction of cargo conveying;

[0009] The roller conveyor includes two straight transmission sections and an inclined roller transmission section. Both ends of the inclined roller transmission section are connected to the straight transmission section. The rollers on the inclined roller transmission section are inclined toward the straight section guide roller side.

[0010] Furthermore, the straight transmission section and the inclined roller transmission section are both driven by independent reduction motors.

[0011] Furthermore, one end of the straight guide roller and the oblique guide roller hingedly connected extends to the oblique roller transmission section or passes through the oblique roller transmission section.

[0012] Preferably, the inclination angle of the roller on the inclined roller transmission section is 6°.

[0013] Furthermore, one end of the connecting section is hinged to the oblique guide roller, and the other end of the connecting section is hinged to the straight guide roller.

[0014] Furthermore, the connecting assembly includes a fixed plate, a hinged plate, and a fixed frame. The fixed plate is fixedly installed on the frame of the roller conveyor. One end of the hinged plate is hinged to the fixed plate, and the other end of the hinged plate is hinged to the fixed frame. The fixed frame is fixedly connected to the inclined guide roller.

[0015] Furthermore, the power device includes a mounting plate, a slide rail, a slider, a push plate, a sprocket, a chain, a servo motor, and a fixing assembly;

[0016] The two ends of the mounting plate are fixed to the frames on both sides of the roller conveyor, and slide rails are respectively provided on both sides of the mounting plate. The slide rails are arranged in parallel and their two ends are respectively fixed to the frames on both sides of the roller conveyor, and the slide rails are slidably connected to the sliders, and a push plate is fixed on the top of the slider, and a U-shaped opening for avoiding the empty roller is opened on the push plate, and the upper end of the push plate is fixedly connected to the straight guide roller;

[0017] Sprockets are rotatably connected to the top ends of the mounting plate, a chain is provided between the two sprockets, a servo motor for driving the sprocket on one side to rotate is installed on the top of the mounting plate, and a fixing part is provided at the bottom of the push plate, which is located on the side of the chain and is fixedly connected to the chain through a fixing assembly.

[0018] Furthermore, the fixing assembly includes a splint, a bolt and a nut. The fixing portion and the splint are both provided with round holes for inserting the bolts. The bolts pass through the fixing portion, the chain and the splint, and the ends thereof are threadedly connected to the nuts.

[0019] The present invention also provides a method for automatically centering cargo in an irradiation system, comprising the following steps:

[0020] Get the width data d of the conveyed goods;

[0021] Obtain the distance L from the straight guide roller to the middle symmetry plane of the roller conveyor, and use a power device to drive the straight guide roller to move so that the distance L from the straight guide roller to the middle symmetry plane of the roller conveyor is equal to d / 2.

[0022] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0023] The automatic centering device for cargo in the irradiation system provided by the present invention can drive the guide device through a power device to automatically adjust the position, so that it can be used for cargo of different sizes. There is no need to shut down the accelerator for manual adjustment, which improves the adjustment efficiency of the centering device and is suitable for further promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 is an axonometric view of the present invention;

[0026] Figure 2 It is a front view of the present invention;

[0027] Figure 3 It is a top view of the present invention (the arrow in the figure indicates the conveying direction);

[0028] Figure 4 A top view of the power device of the present invention;

[0029] Figure 5 It is a front view of the power device of the present invention;

[0030] Figure 6 This is an enlarged view of part a in the present invention;

[0031] Figure 7 Schematic diagram of the structure of the connection assembly in the present invention;

[0032] Figure 8 It is an enlarged view of part b in the present invention.

[0033] The labels in the figure are as follows:

[0034] Straight transmission section-1; inclined roller transmission section-2; inclined guide roller-3; straight guide roller-4; connecting section-5; power unit-6; connecting assembly-7; guide roller-8; cargo-9; roller-21; slide rail-61; slider-62; push plate-63; sprocket-64; chain-65; servo motor-66; fixing assembly-67; mounting plate-68; fixing part-631; splint-671; bolt-672; nut-673; fixing plate-71; hinged plate-72; fixing frame-73. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Refer to the attached Figure 1-3 As shown, the present invention provides an automatic centering device for goods in an irradiation system, comprising a guide device and a power device 6 installed on a roller conveyor;

[0037] The guide device is installed on one side of the roller conveyor and consists of an oblique guide roller 3 and a straight guide roller 4. The oblique guide roller 3 is close to the input end of the roller conveyor, and the straight guide roller 4 is close to the output end of the roller conveyor. One end of the oblique guide roller 3 is installed on the frame of the roller conveyor through a connecting component 7, and the other end of the oblique guide roller 3 is hinged to the straight guide roller 4 through a connecting section 5; wherein, one end of the connecting section 5 is hinged to the oblique guide roller 3, and the other end of the connecting section 5 is hinged to the straight guide roller 4.

[0038] The moving end of the power device 6 is fixedly connected to the straight section guide roller 4, and is used to drive the straight section guide roller 4 to move in a direction perpendicular to the conveying direction of the goods 9;

[0039] The roller conveyor includes two straight transmission sections 1 and an inclined roller transmission section 2. Both ends of the inclined roller transmission section 2 are connected to the straight transmission section 1.

[0040] Refer to the attached Figure 3 As shown, one end of the straight guide roller 4 and the oblique guide roller 3 is hinged to extend to the oblique roller transmission section 2 or passes through the oblique roller transmission section 2. In this embodiment, one end of the straight guide roller 4 and the oblique guide roller 3 is hinged to extend to the oblique roller transmission section 2.

[0041] Among them, the straight transmission section 1 and the inclined roller transmission section 2 are both driven by independent reduction motors. During use, the conveying speed of each section can be adjusted accordingly according to actual needs; the roller 21 on the inclined roller transmission section 2 is tilted toward the straight section guide roller 4, and the inclination angle of the roller 21 on the inclined roller transmission section 2 is generally 6°.

[0042] Exhibition Attachment Figure 3As shown, during normal irradiation production, the goods 9 smoothly enter the right straight transmission section 1. Generally, at this time, the goods 9 have two states:

[0043] One is to stick to the oblique guide roller 3 and continue to run forward. After entering the oblique roller transmission section 2, the centripetal force and friction generated by the rotation of the inclined roller 21 make the goods 9 tightly stick to the straight guide roller 4. The straight guide roller 4 has been adjusted in advance. Once the goods stick to the straight guide roller 4, they are in a centered state. Then the goods 9 continue to be transported and output from the left straight transmission section 1 into the irradiation area for irradiation;

[0044] The other is that the goods 9 are not attached to the inclined guide roller 3. When the goods 9 are transported forward, after entering the inclined roller transmission section 2, after running for a period of time, they will slowly stick to the straight guide roller 4 to achieve centering due to the centripetal force and friction generated by the rotation of the inclined roller 21. Then the goods 9 continue to be transported and output from the left straight transmission section 1 into the irradiation area for irradiation.

[0045] When goods of different sizes need to be transported, the power device 6 can be used to drive the straight guide roller 4 to move in a direction perpendicular to the conveying direction of the goods 9, thereby realizing automatic adjustment of the position of the straight guide roller 4, so that it can be suitable for the centering of goods of different sizes.

[0046] Refer to the attached Figure 7 and 8 As shown, the connecting assembly 7 includes a fixed plate 71, an articulated plate 72, and a fixed frame 73. The fixed plate 71 is fixedly mounted on the frame of the roller conveyor. One end of the articulated plate 72 is hinged to the fixed plate 71, and the other end of the articulated plate 72 is hinged to the fixed frame 73. The fixed frame 73 is fixedly connected to the oblique guide roller 3. When the power unit 6 drives the straight guide roller 4 toward the middle of the roller conveyor, the straight guide roller 4 pulls the end of the oblique guide roller 3 connected to it outward through the connecting section 5. The end of the oblique guide roller 3 connected to the fixed frame 73 drives the articulated plate 72 to flip and unfold.

[0047] When the power device 6 drives the straight section guide roller 4 to retract and reset, the straight section guide roller 4 pushes the end of the oblique section guide roller 3 connected to it inward through the connecting section 5, and the end of the oblique section guide roller 3 connected to the fixing frame 73 will drive the hinged plate 72 to flip back and retract.

[0048] Refer to the attached Figure 4-6 As shown, the power unit 6 includes a mounting plate 68, a slide rail 61, a slider 62, a push plate 63, a sprocket 64, a chain 65, a servo motor 66, and a fixing assembly 67;

[0049] Both ends of the mounting plate 68 are fixed on the frames on both sides of the roller conveyor. Slide rails 61 are respectively provided on both sides of the mounting plate 68. The slide rails 61 are arranged in parallel and their two ends are respectively fixed on the frames on both sides of the roller conveyor. Slide blocks 62 are slidably connected to the slide rails 61. A push plate 63 is fixed on the top of the slider 62, and the push plate 63 can move along the direction of the slide rail 61; a U-shaped opening for avoiding the empty roller is opened on the push plate 63, and the upper end of the push plate 63 is fixedly connected to the straight guide roller 4.

[0050] Sprockets 64 are rotatably connected to both ends of the top of the mounting plate 68, and a chain 65 is arranged between the two sprockets 64. A servo motor 66 for driving the sprocket 64 on one side to rotate is installed on the top of the mounting plate 68. The output shaft of the servo motor is fixedly connected to a sprocket. A fixing portion 631 is provided at the bottom of the push plate 63. The fixing portion 631 is located on the side of the chain 65 and is fixedly connected to the chain 65 through a fixing component 67.

[0051] When the servo motor 66 is running, it will drive the chain 65 to run through the sprocket 64. Since the fixed part 631 on the push plate 63 is fixedly connected to the sprocket 64, the operation of the chain 65 will drive the push plate 63 to move. Since the upper end of the push plate 63 is fixedly connected to the straight section guide roller 4, the movement of the push plate 63 will drive the straight section guide roller 4 to move.

[0052] Furthermore, the transmission mechanism of the chain and sprocket in the present invention can also be replaced by a structure such as a lead screw, a telescopic rod, etc. that can drive the push plate 63 to move in a straight line.

[0053] Among them, the fixing component 67 includes a splint 671, a bolt 672 and a nut 673. Circular holes for passing the bolt 672 are opened on the fixing part 631 and the splint 671. The bolt 672 passes through the fixing part 631, the chain 65 and the splint 671, and its end is threadedly connected to the nut 673 to achieve the fixation of the push plate 63 and the chain 65.

[0054] As a further preferred embodiment, see the attached Figure 1 and 3 As shown, a guide roller 8 is provided on the opposite side of the guide device, and the guide roller 8 is installed on the frame of the roller conveyor; when the goods approach the opposite side of the guide device, the guide roller 8 can guide the goods, thereby facilitating the transportation of the goods.

[0055] Refer to the attached Figure 3 As shown, this embodiment also provides a method for automatically centering cargo in an irradiation system, comprising the following steps:

[0056] Obtain width data d of the conveyed goods 9. The goods' dimensions can be measured before they enter the roller conveyor. Furthermore, the dimensions can be obtained by manually measuring the goods before irradiation and inputting them. Alternatively, a scanning component can be installed at the front of the roller conveyor to scan the goods and obtain their dimensions.

[0057] Obtain the distance L between the straight guide roller 4 and the middle symmetric plane of the roller conveyor, and use the power device 6 to drive the straight guide roller 4 to move so that the distance L between the straight guide roller 4 and the middle symmetric plane of the roller conveyor is equal to half the width of the goods (d / 2). Figure 3 As shown, when L=d / 2, in a top view, when the side wall of the cargo is in contact with the straight guide roller 4, the symmetry line of the middle of the roller conveyor coincides with the symmetry line of the middle of the cargo, thereby achieving centering of the cargo.

[0058] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An automatic centering device for cargo in an irradiation system, characterized in that: It includes a guide device and a power device (6) mounted on the roller conveyor; The guide device is installed on one side of the roller conveyor and is composed of an inclined guide roller (3) and a straight guide roller (4). The inclined guide roller (3) is close to the input end of the roller conveyor, and the straight guide roller (4) is close to the output end of the roller conveyor. One end of the inclined guide roller (3) is installed on the frame of the roller conveyor through a connecting component (7), and the other end of the inclined guide roller (3) is hinged to the straight guide roller (4) through a connecting section (5); One end of the straight section guide roller (4) hinged to the oblique section guide roller (3) extends to the oblique roller transmission section (2) or passes through the oblique roller transmission section (2); The moving end of the power device (6) is fixedly connected to the straight guide roller (4) and is used to drive the straight guide roller (4) to move in a direction perpendicular to the conveying direction of the goods (9); The roller conveyor comprises two straight transmission sections (1) and an inclined roller transmission section (2), both ends of the inclined roller transmission section (2) are connected to the straight transmission section (1), and the rollers (21) on the inclined roller transmission section (2) are inclined toward the straight section guide roller (4); The connecting assembly (7) comprises a fixed plate (71), a hinged plate (72), and a fixed frame (73); the fixed plate (71) is fixedly mounted on a frame of the roller conveyor; one end of the hinged plate (72) is hinged to the fixed plate (71); the other end of the hinged plate (72) is hinged to the fixed frame (73); and the fixed frame (73) is fixedly connected to the oblique guide roller (3).

2. The automatic centering device for cargo in an irradiation system according to claim 1, characterized in that: The straight transmission section (1) and the inclined roller transmission section (2) are both driven by independent reduction motors.

3. The automatic centering device for cargo in an irradiation system according to claim 1, characterized in that: The inclination angle of the upper roller (21) of the inclined roller transmission section (2) is 6°.

4. The automatic centering device for cargo in an irradiation system according to claim 1, characterized in that: One end of the connecting section (5) is hinged to the oblique section guide roller (3), and the other end of the connecting section (5) is hinged to the straight section guide roller (4).

5. The automatic centering device for cargo in an irradiation system according to claim 1, characterized in that: The power device (6) includes a mounting plate (68), a slide rail (61), a slider (62), a push plate (63), a sprocket (64), a chain (65), a servo motor (66), and a fixing assembly (67); The two ends of the mounting plate (68) are fixed to the frames on both sides of the roller conveyor, and slide rails (61) are respectively provided on both sides of the mounting plate (68). The slide rails (61) are arranged in parallel and their two ends are respectively fixed to the frames on both sides of the roller conveyor, and the slide rails (61) are slidably connected to the sliders (62), and a push plate (63) is fixed on the top of the slider (62). The push plate (63) is provided with a U-shaped opening for avoiding the roller, and the upper end of the push plate (63) is fixedly connected to the straight guide roller (4); The top ends of the mounting plate (68) are rotatably connected to sprockets (64), a chain (65) is provided between the two sprockets (64), a servo motor (66) for driving the sprocket (64) on one side to rotate is installed on the top of the mounting plate (68), and a fixing portion (631) is provided at the bottom of the push plate (63), and the fixing portion (631) is located on the side of the chain (65) and is fixedly connected to the chain (65) through a fixing assembly (67).

6. The automatic centering device for cargo in an irradiation system according to claim 5, characterized in that: The fixing assembly (67) includes a clamping plate (671), a bolt (672) and a nut (673). The fixing portion (631) and the clamping plate (671) are both provided with a circular hole for inserting the bolt (672). The bolt (672) passes through the fixing portion (631), the chain (65) and the clamping plate (671), and the end thereof is threadedly connected to the nut (673).

7. A method for automatically centering cargo in an irradiation system, characterized in that: Using the automatic centering device for cargo in an irradiation system according to any one of claims 1 to 6, the method comprises the following steps: Obtaining width data d of the conveyed goods (9); Obtain the distance L from the straight guide roller (4) to the middle symmetry plane of the roller conveyor, and drive the straight guide roller (4) to move by the power device (6) so that the distance L from the straight guide roller (4) to the middle symmetry plane of the roller conveyor is equal to d / 2.

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