Refrigerated truck body panel preparation device and preparation method

Abstract

This invention provides an apparatus and method for preparing refrigerated truck body panels. The apparatus includes a first conveying device, a second conveying device, an automatic positioning device, a pressing device, and a foaming device. The first conveying device can simultaneously convey multiple lower skin panels into the pressing device. The second conveying device can simultaneously convey multiple upper skin panels into the pressing device. The foaming device is used to foam and spray the foam material onto the lower skin panels located on the first conveying device. The pressing device includes a lifting mechanism and an adsorption mechanism. The lifting mechanism is used to lift multiple upper skin panels, and the adsorption mechanism is used to adsorb the multiple upper skin panels lifted by the lifting mechanism. The lifting mechanism is also used to lift multiple lower skin panels and press the lower and upper skin panels. The automatic positioning device is used to align the multiple upper and lower skin panels one by one.

Description

Technical Field

[0001] This invention relates to the field of sheet metal production technology, and in particular to a refrigerated truck body sheet preparation device and preparation method. Background Technology

[0002] Foaming is a core process in refrigerated truck manufacturing, encompassing both continuous and discontinuous sheet production. Due to limitations in existing foaming equipment and processes, the typical efficiency for each foaming cycle is one sheet. Currently available foaming presses are all large-format presses, primarily suitable for foaming one large sheet at a time. Foaming small sheets one sheet at a time represents a significant waste of efficiency for existing equipment. However, positioning the upper and lower skin panels is a challenge when foaming multiple small sheets simultaneously. Summary of the Invention

[0003] The purpose of this invention is to provide a refrigerated truck body panel preparation device and method that can prepare multiple refrigerated truck body panels at one time with high utilization rate, so as to solve the problems in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention provides a refrigerated truck body panel preparation device, including a first conveying device, a second conveying device, an automatic positioning device, a pressing device, and a foaming device;

[0005] The first conveying device can simultaneously convey multiple lower skin plates into the pressing device; the second conveying device can simultaneously convey multiple upper skin plates into the pressing device.

[0006] The foaming equipment is used to foam the material and spray the foam material onto the lower skin plate located on the first conveying equipment;

[0007] The pressing device includes a lifting mechanism and an adsorption mechanism; the lifting mechanism is used to lift up multiple upper skin plates, the adsorption mechanism is used to adsorb the multiple upper skin plates lifted by the lifting mechanism, and the lifting mechanism is also used to lift up multiple lower skin plates and press the lower skin plates and the upper skin plates.

[0008] The automatic positioning device is used to align the multiple upper skin plates and the multiple lower skin plates one by one.

[0009] In one embodiment, the automatic positioning device includes a first moving mechanism corresponding to the first conveying device and a first probe connected to the first moving mechanism, a second moving mechanism corresponding to the second conveying device and a second probe connected to the second moving mechanism, wherein both the first moving mechanism and the second moving mechanism are movable;

[0010] In this system, the first support surface on the first conveying device and the second support surface on the second conveying device are used as planar coordinates, with the origins of the two planar coordinates corresponding to each other. The first probe is used to detect the coordinates (X1, Y1) of the detection point of the lower skin plate located on the first support surface. The detection point is one of the vertices of the upper skin plate. The second moving mechanism moves the second probe according to the coordinates of the first probe, so that the coordinates of the second probe are (X2, Y2), where X1 = X2 and Y1 = Y2. The upper skin plate is arranged on the second support surface according to the coordinates (X2, Y2) of the second probe. The first moving mechanism moves the first probe to detect the coordinates of the detection points of multiple upper skin plates, thereby realizing the one-to-one alignment of multiple lower skin plates and multiple upper skin plates.

[0011] In one embodiment, taking one of the vertices of the first support surface as the origin, the first probe detects the coordinates of the detection point of the lower skin plate to the remaining three vertices of the first support surface, and calculates the coordinates (X1, Y1) of the detection point.

[0012] In one embodiment, both the first moving mechanism and the second moving mechanism include two longitudinal rails spaced laterally, a support frame that slides with the two longitudinal rails and is capable of moving longitudinally, a transverse moving mechanism disposed on the support frame and capable of moving laterally, and a lifting mechanism connected to the transverse moving mechanism. The lifting mechanism is capable of lifting and lowering. The two longitudinal rails of the first moving mechanism are arranged on both sides of the first conveying device, and the two longitudinal rails of the second moving mechanism are arranged on both sides of the second conveying device.

[0013] The first probe is mounted on the lifting mechanism of the first moving mechanism, and the second probe is mounted on the lifting mechanism of the second moving mechanism.

[0014] In one embodiment, there is a height difference between the second support surface and the first support surface, and the second support surface is higher than the first support surface;

[0015] The height difference H between the first probe and the first support surface is equal to the height difference between the second support surface and the first support surface, so that the coordinates of the second probe are (X2, Y2, H).

[0016] In one embodiment, there are multiple foaming devices, each foaming device includes a nozzle, the nozzles of the multiple foaming devices are arranged side by side in a horizontal direction, and each nozzle is disposed on the pressing device and faces the first conveying device;

[0017] Each of the aforementioned gun heads is capable of moving laterally.

[0018] In one embodiment, there is a gap between two longitudinally adjacent lower skin plates, during which the large piston of the gun head is closed and the gun head continuously injects material under high pressure.

[0019] In the two adjacent lower skin plates along the longitudinal direction, when the first conveying device moves to the next lower skin plate, the first conveying device stops moving. After the nozzle starts spraying foam material, the first conveying device continues to move.

[0020] In one embodiment, each of the nozzles can be configured with an injection start time and an injection stop time based on the length of its corresponding lower skin plate.

[0021] The injection start time and stop time of the nozzle, as well as the moving speed of the first conveying device, are set according to the position of the lower skin plate on the first conveying device.

[0022] In one embodiment, the second conveying device includes a plurality of support members spaced apart and a plurality of support adsorption members spaced apart. The tops of the plurality of support members and the tops of the support adsorption members are flush and form a second support surface of the second conveying device. The support member includes a support rod and a support block disposed on the top of the support rod. The support block is made of rubber. The support adsorption member includes a vertical rod, an adsorption plate disposed on the top of the vertical rod, and a vacuum pump connected to the adsorption plate.

[0023] In one embodiment, the support member and the support adsorption member are alternately arranged, and the distance between any adjacent support member and the support adsorption member is less than or equal to 1m;

[0024] The second conveying device further includes a longitudinal reference member and a transverse reference member. The longitudinal reference member forms one side of the longitudinal direction of the second support surface, and the transverse reference member forms one end of the transverse direction of the second support surface. The longitudinal reference member extends longitudinally, and the transverse reference member extends transversely.

[0025] The second conveying device further includes a limiting member disposed on the longitudinal reference member and the transverse reference member and extending upward beyond the second support surface.

[0026] This invention also provides a method for preparing a refrigerated truck body panel, comprising the following steps:

[0027] Multiple lower skin plates are placed at intervals on the first conveying equipment;

[0028] Using the first support surface of the first conveying device to construct a planar coordinate system, the coordinates (X1, Y1) of the detection point on the lower skin plate are detected and calculated.

[0029] A second conveying device is provided, wherein the conveying direction of the second conveying device and the first conveying device both extend longitudinally, and a plane coordinate is constructed with the second support surface of the second conveying device, and the origin of the plane coordinate corresponds to the origin of the first support surface;

[0030] Based on the coordinates (X1, Y1) of the detection point of the lower skin plate, the coordinates (X2, Y2) are located on the second support surface, and the upper skin plate is placed at the coordinates (X2, Y2) in a manner corresponding to the lower skin plate, thereby achieving the alignment of the upper skin plate and the lower skin plate, where X1 = X2 and Y1 = Y2.

[0031] Start the second conveying device to convey the upper skin plate into the pressing device, lift the second conveying device by the lifting mechanism, and use the suction mechanism to hold the upper skin plate in place, then remove the second conveying device;

[0032] Start the first conveying device to move the lower skin plate toward the pressing device, and during the movement of the first conveying device, the foam material is sprayed onto the lower skin plate;

[0033] After the first conveying device enters the pressing device, the lifting mechanism raises the first conveying device and presses the lower skin plate and the upper skin plate to obtain the refrigerated truck body panel.

[0034] In one embodiment, the height difference between the second support surface and the first support surface is H. The coordinates (X1, Y1, H) directly above the detection point are obtained by a positioning tool with a height of H, and the positioning coordinates (X2, Y2, H) on the second support surface are obtained.

[0035] The positioning tool is placed on the lower skin plate, such that the lower skin plate is located in the notch at the bottom of the positioning tool, and the sidewall of the notch is in contact with the end face of the lower skin plate.

[0036] In one embodiment, when the first conveying device conveys a plurality of lower skin plates arranged at longitudinal intervals,

[0037] When the first conveying device moves to the interval between two adjacent lower skin plates, it stops spraying foam material from the nozzle and keeps the nozzle injecting material under high pressure.

[0038] The first conveying device stops moving when it moves to the next lower skin plate of two longitudinally adjacent lower skin plates;

[0039] Turn on the nozzle to spray foam material, and start the first conveying device to continue moving.

[0040] As can be seen from the above technical solution, the advantages and positive effects of the present invention are as follows:

[0041] The refrigerated truck body panel preparation device of this invention includes a first conveying device, a second conveying device, an automatic positioning device, a pressing device located between the first and second conveying devices, and a foaming device corresponding to the first conveying device. Multiple lower skin panels are simultaneously conveyed by the first conveying device, and multiple upper skin panels are simultaneously conveyed by the second conveying device. Foaming material is supplied to the lower skin panels by the foaming device. The automatic positioning device positions the multiple lower and upper skin panels. Finally, the pressing device presses the positioned upper and lower skin panels, enabling the preparation of multiple refrigerated truck body panels at once. This effectively distributes the curing time of the equipment and improves equipment utilization.

[0042] In addition, during the interval between the two lower skin panels, the large piston of the foaming device is closed and the nozzle continuously injects material at high pressure. When the next lower skin panel moves to the nozzle, the first conveying device stops moving first. After the nozzle starts spraying foam, the first conveying device continues to move. Therefore, the time difference caused by the opening of the large piston of the nozzle is avoided, which causes the starting point to shift, ensuring the starting position on the lower skin panel and ensuring the quality of the refrigerated truck body panel. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of one embodiment of the refrigerated truck body panel preparation device of the present invention.

[0044] Figure 2 This is a schematic diagram of the substructure of the refrigerated truck body panel preparation device in this invention.

[0045] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0046] Figure 4 This is a schematic diagram showing the alignment of the upper skin plate and the lower skin plate in this invention.

[0047] Figure 5 This is a schematic diagram of the lower skin plate and positioning tool in this invention.

[0048] Figure 6 This is a schematic diagram of multiple nozzles and multiple lower skin plates of the foaming equipment in this invention.

[0049] Figure 7 This is a schematic diagram of one of the nozzles of the foaming device in this invention spraying the lower skin plate.

[0050] The annotations in the attached figures are explained as follows:

[0051] 1. First conveying equipment; 2. Second conveying equipment; 21. Track; 22. Support leg; 23. Second support component; 24. Support component; 25. Support and adsorption component; 26. Longitudinal standard rod; 27. Longitudinal limiting rod; 31. First probe; 32. Second probe; 4. Pressing equipment; 5. Foaming equipment; 51. Gun head;

[0052] 6. Positioning tool; 61. Top wall; 62. Side wall; 63. Observation hole;

[0053] 7. Lower skin panel; 8. Upper skin panel. Detailed Implementation

[0054] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0055] To further illustrate the principles and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0056] This application provides a refrigerated truck body panel preparation device for preparing refrigerated truck body panels. This device employs a multi-cavity, single-mold method, allowing multiple small panels to be foamed and cured simultaneously, enabling the preparation of multiple refrigerated truck body panels at once. This effectively distributes the curing time and improves equipment utilization.

[0057] The refrigerated truck body panel in this application includes two skin panels and foam material located between the two skin panels. The foam material is sprayed onto one of the skin panels, and then the other skin panel is placed on the foam material and pressed into shape.

[0058] See Figure 1 The refrigerated truck body panel preparation device includes a first conveying device 1, a second conveying device 2, an automatic positioning device, a pressing device 4, and a foaming device 5. The first conveying device 1 simultaneously conveys multiple lower skin panels 7, and the second conveying device 2 simultaneously conveys multiple upper skin panels 8. The foaming device 5 provides foam material to the lower skin panels 7. The automatic positioning device positions the multiple lower skin panels 7 and multiple upper skin panels 8. Finally, the pressing device 4 presses the positioned upper skin panels 8 and lower skin panels 7, thus achieving the preparation of multiple refrigerated truck body panels in one operation.

[0059] Specifically, the conveying directions of the first conveying device 1 and the second conveying device 2 are parallel. For ease of description, the conveying direction of the first conveying device 1 and the second conveying device 2 is defined as longitudinal, and the direction perpendicular to the longitudinal direction and located in the horizontal plane is defined as transverse.

[0060] The first conveying device 1 can simultaneously convey multiple lower skin plates 7 into the pressing device 4. The lower skin plates 7 are placed on the first conveying device 1 with their length along the conveying direction. That is, the length of the lower skin plate 7 extends longitudinally. Multiple lower skin plates 7 are arranged at intervals on the first conveying device 1. Specifically, multiple lower skin plates 7 are arranged at intervals along the longitudinal direction. Further, multiple lower skin plates 7 are arranged at intervals along the transverse direction.

[0061] Combination Figure 1 and Figure 2 The first conveying device 1 includes two first tracks extending longitudinally, a plurality of first legs slidingly engaged with the first tracks, and a first support member. The plurality of first legs are located below the first support member and support the first support member. The first support member is plate-shaped.

[0062] The two first tracks are set at a horizontal interval.

[0063] The first support member has first legs on both sides of the lateral direction, and at least two first legs are arranged at intervals along the longitudinal direction on each side.

[0064] Each of the first legs is equipped with a first roller at its bottom, and the first roller can roll along the first track.

[0065] The upper surface of the first support member is horizontal, thus forming the first support surface. Multiple lower skin plates 7 are placed on the first support surface. That is, the lower skin plates 7 are placed directly on the first support member.

[0066] The second conveying device 2 can simultaneously convey multiple upper skin plates 8 into the pressing device 4. The upper skin plates 8 are placed on the second conveying device 2 with their length along the conveying direction. That is, the length of the upper skin plate 8 extends longitudinally. Multiple upper skin plates 8 are spaced apart. Each upper skin plate 8 corresponds to a lower skin plate 7.

[0067] The second conveying device 2 includes two longitudinally extending second tracks 21, a plurality of second legs 22 slidably engaged with the second tracks 21, and a second support member 23. The plurality of second legs 22 are located below the second support member 23 and support the second support member 23. The second support member 23 is frame-type and includes a plurality of longitudinally extending longitudinal beams and a plurality of transversely extending crossbeams.

[0068] The two second tracks 21 are set at a horizontal interval.

[0069] The second support member 23 is provided with second legs 22 on both sides of the lateral direction, and at least two second legs 22 are provided on each side at intervals along the longitudinal direction.

[0070] Each second leg 22 has a second roller at its bottom, and the second roller can roll along the second track 21.

[0071] The second conveying device 2 includes a plurality of spaced-apart support members 24 and a plurality of spaced-apart support adsorption members 25. The tops of the plurality of support members 24 and the tops of the support adsorption members 25 are flush and form a second support surface.

[0072] The support member 24 and the support adsorption member 25 are arranged alternately, that is, along the horizontal and vertical directions, the support member 24 is surrounded by the support adsorption member 25, and the support adsorption member 25 is surrounded by the support member 24.

[0073] Preferably, the distance between any adjacent support member 24 and support adsorption member 25 is less than or equal to 1m, to ensure that each upper skin plate 8 has at least one support adsorption member 25 underneath. In this embodiment, the upper skin plate 8 has a length greater than or equal to 1m and a width greater than or equal to 1m.

[0074] The support member 24 and the support adsorption member 25 adopt the above-mentioned alternating structural design to ensure that there is at least one support adsorption member 25 below the upper skin plate 8 located on the second support surface to adsorb the upper skin plate 8, thereby preventing the upper skin plate 8 from moving during the conveying process and ensuring the positioning of the upper skin plate 8 when the second conveying device 2 conveys the upper skin plate 8.

[0075] The support member 24 includes a support rod and a support block disposed on top of the support rod. Specifically, the support member 24 has a T-shaped cross-section. The upper surface of the support block extends horizontally. The support block is made of rubber to avoid damaging the upper skin plate 8.

[0076] The support adsorption component 25 includes a pole, an adsorption plate disposed on the top of the pole, and an air pump connected to the adsorption plate.

[0077] The second support surface is formed by multiple support blocks and multiple adsorption plates, so that the second support surface includes multiple surfaces spaced apart, avoiding the formation of adsorption force between the second support surface and the upper skin plate 8, and ensuring that the subsequent pressing equipment 4 can smoothly adsorb and remove the upper skin plate 8 from the second support surface.

[0078] There is a height difference between the second support surface and the first support surface, and the second support surface is higher than the first support surface. In this embodiment, the upper surfaces of the first support member and the second support member 23 are flush, and the height of the support member 24 constitutes the height difference between the second support surface and the first support surface. In other embodiments, there is a height difference between the upper surfaces of the first support member and the second support member 23, so that the height of the support member 24 can be less than the height difference between the second support surface and the first support surface, or the height of the support member 24 can be greater than the height difference between the second support surface and the first support surface.

[0079] Furthermore, the second conveying device also includes a longitudinal reference member and a transverse reference member. The longitudinal reference member forms one side of the longitudinal direction of the second support surface, and the transverse reference member forms one end of the transverse direction of the second support surface. The longitudinal reference member extends longitudinally, and the transverse reference member extends transversely.

[0080] The longitudinal reference member includes a plurality of longitudinal standard rods 26 spaced apart along the longitudinal direction, and the transverse reference member includes a plurality of transverse standard rods spaced apart along the transverse direction. The transverse standard rods have the same structure as the longitudinal standard rods 26, and the tops of both the transverse and longitudinal standard rods 26 are flush with the top of the support member 24.

[0081] The longitudinal and transverse reference components are used to ensure the accuracy of the second support surface along the longitudinal and transverse directions.

[0082] Furthermore, the second conveying device also includes limiting members disposed on the longitudinal reference member and the transverse reference member and extending upward beyond the second support surface. Specifically, the limiting members include a longitudinal limiting rod 27 correspondingly disposed on the longitudinal standard rod 26 and a transverse limiting rod correspondingly disposed on the transverse standard rod. The longitudinal limiting rod 27 and the transverse standard rod are used to restrict the upper skin plate 8 located on the second support surface from continuing to move outward.

[0083] The pressing device 4 is located between the first conveying device 1 and the second conveying device 2. The first conveying device 1 conveys the lower skin plate 7 sprayed with foam material into the pressing device 4, and the second conveying device 2 conveys the upper skin plate 8 into the pressing device 4. The pressing device 4 presses the upper skin plate 8 and the lower skin plate 7, so that the foam material is located between the upper skin plate 8 and the lower skin plate 7, forming a refrigerated truck body panel.

[0084] The pressing device 4 includes a lifting mechanism and an adsorption mechanism, with the adsorption mechanism located above the lifting mechanism. The lifting mechanism is used to lift multiple upper skin plates, the adsorption mechanism is used to adsorb the multiple upper skin plates lifted by the lifting mechanism, and the lifting mechanism is used to lift multiple lower skin plates and press the lower skin plates and upper skin plates.

[0085] The pressing device 4 includes a support frame that extends longitudinally and has a longitudinally penetrating accommodating space inside. In this embodiment, the support frame includes multiple pairs of columns spaced apart longitudinally, a crossbeam connecting the top of each pair of columns, and a top plate located at the bottom of the crossbeam. Each pair of columns includes two columns arranged on both sides laterally, and the crossbeam extends laterally.

[0086] Specifically, the adsorption mechanism includes multiple suction cups and an air pump. The suction cups are equipped with air extraction ports, and the air pump is connected to the air extraction ports to extract air so that the suction cups adsorb onto the skin plate 8.

[0087] The suction cups are mounted on the top plate, and multiple suction cups are arranged in an array, that is, the suction cups are arranged in multiple rows and columns.

[0088] The lifting mechanism is located below the adsorption mechanism and within the accommodating space. The lifting mechanism includes multiple hydraulic cylinders and a lifting plate, which is located on top of the cylinders and rises and falls with them. Specifically, the first conveying device 1 can move into the pressing device 4, positioning the first support member directly above the lifting plate; the lifting plate's movement causes the first conveying device 1 to rise and fall. The second conveying device 2 can move into the pressing device 4, positioning the second support member 23 directly above the lifting plate; the lifting plate's movement causes the second conveying device 2 to rise and fall.

[0089] In this embodiment, the pressing device 4 is provided with two connecting rails, which are respectively arranged in a one-to-one correspondence with the rails 21 of the first conveying device 1 and the second conveying device 2. The connecting rails extend longitudinally and connect with the corresponding first rails and second rails 21, so that the first support member and the second support member 23 can move onto the connecting rails and be located inside the pressing device 4.

[0090] That is, the second conveying device 2 carries multiple upper skin plates 8 into the accommodating space. The hydraulic cylinder rises, the lifting plate moves upward and drives the second conveying device 2 to rise. At this time, the multiple upper skin plates 8 are adsorbed by the adsorption device. The lifting mechanism carries the second conveying device 2 down, so that the second conveying device 2 is lowered onto the connecting track and exits the accommodating space.

[0091] Then, the first conveying device 1 moves multiple lower skin plates 7 into the receiving space, and before entering the receiving space, the foaming device 5 sprays foam material onto the lower skin plates 7. After the lower skin plates 7 enter the receiving space, the hydraulic cylinder rises, the lifting plate moves upward and drives the first conveying device 1 to rise, pressing the upper skin plate 8 and the lower skin plate 7.

[0092] The automatic positioning device is used to position the upper skin plate 8 and the lower skin plate 7, so that the upper skin plate 8 and the lower skin plate 7 can be accurately aligned.

[0093] The automatic positioning device includes a first moving mechanism corresponding to the first conveying device 1 and a first probe 31 connected to the first moving mechanism, a second moving mechanism corresponding to the second conveying device 2 and a second probe 32 connected to the second moving mechanism, and both the first moving mechanism and the second moving mechanism are capable of movement.

[0094] Both the first and second moving mechanisms include two longitudinal tracks spaced laterally, a support frame that slides with the two longitudinal tracks and can move longitudinally, a transverse moving mechanism mounted on the support frame and capable of moving laterally, and a vertical moving mechanism connected to the transverse moving mechanism, wherein the vertical moving mechanism can move vertically.

[0095] The two longitudinal tracks of the first moving mechanism are arranged on both sides of the first conveying device 1, and there is a gap between the longitudinal tracks and the corresponding tracks of the first conveying device 1 to avoid interference.

[0096] The two longitudinal tracks of the second moving mechanism are arranged on both sides of the second conveying device 2, and there is a gap between the longitudinal tracks and the corresponding track 21 of the second conveying device 2 to avoid interference.

[0097] The support frame includes pillars corresponding to the two longitudinal tracks, and connecting beams connected to the tops of the two pillars, with the connecting beams extending laterally.

[0098] The lateral movement mechanism includes a transverse rail mounted on a connecting beam, a lateral slider that slides along the transverse rail, and a drive component that drives the slider to move.

[0099] The vertical movement mechanism includes a lifting slide, a lifting block, and a lifting power component. The lifting slide extends along the height direction. The lifting slide has two parallel, spaced-apart lifting rails.

[0100] One side of the lifting slider is fixed to the lateral movement mechanism and can move laterally with the lateral movement mechanism, while the other side slides in engagement with the lifting track. The lifting power component drives the lifting slider to move up and down relative to the lifting track.

[0101] The first probe 31 is mounted on the vertical movement mechanism of the first moving mechanism, and the second probe 32 is mounted on the lifting mechanism of the second moving mechanism. Specifically, the first probe 31 is mounted on the lifting slider of the first moving mechanism, and the second probe 32 is mounted on the lifting slider of the second moving mechanism. Therefore, both the first probe 31 and the second probe 32 can move longitudinally, laterally, and vertically.

[0102] In this system, the first support surface on the first conveying device 1 and the second support surface on the second conveying device 2 are used as planar coordinates, with the origins of the two planar coordinates corresponding to each other. The first probe 31 is used to detect the coordinates (X1, Y1) of a detection point on the lower skin plate 7 located on the first support surface. The detection point is one of the vertices of the lower skin plate 7. The second moving mechanism moves the second probe 32 according to the coordinates of the first probe 31, so that the coordinates of the second probe 32 are (X2, Y2), where X1 = X2 and Y1 = Y2. The upper skin plate 8 is placed on the second support surface according to the coordinates (X2, Y2) of the second probe 32. The first moving mechanism moves the first probe 31 to detect the coordinates of multiple detection points on the lower skin plates 7, and achieves one-to-one alignment of the multiple lower skin plates 7 and multiple upper skin plates 8 according to the above positioning method.

[0103] Specifically, taking one vertex of the first support surface as the origin, the first probe 31 detects the coordinates of the detection point of the lower skin plate 7 to the remaining three vertices of the first support surface, and calculates the coordinates (X1, Y1) of the detection point. The height difference H between the first probe 31 and the first support surface is equal to the height difference between the second support surface and the first support surface, that is, the height difference between the second support surface and the first support surface is H. The coordinates (X1, Y1, H) directly above the detection point are obtained through the positioning tool 6 at a height of H, and then the positioning coordinates (X2, Y2, H) on the second support surface are obtained.

[0104] See Figure 4 The following is a detailed explanation using the example of an automatic positioning device locating an upper skin plate 8 and a lower skin plate 7.

[0105] Planar coordinates are constructed using the first and second supporting surfaces, respectively. The four vertices of the first supporting surface are T0, T1, T2, and T3, and the four vertices of the second supporting surface are F0, F1, F2, and F3. Vertex T0 of the first supporting surface is the origin, and vertex F0 of the second supporting surface is the origin; T0 and F0 correspond to each other. In this embodiment, using... Figure 4 With the view direction as a reference, T0 is located at the lower left corner of the first support surface, and F0 is located at the lower left corner of the second support surface. Furthermore, T0 and F0 are located on the same straight line extending longitudinally. That is, the origins of the first and second support surfaces are located on the same straight line extending longitudinally.

[0106] Place the lower skin plate 7 on the first support surface. Select one vertex P1 of the lower skin plate 7 as the detection point. Then move the first probe 31 so that the first probe 31 is directly above the detection point on the lower skin plate 7, and the vertical distance between the first probe 31 and the lower skin plate 7 is H.

[0107] Figure 5 A schematic diagram of the positioning tool 6 and the lower skin plate 7 is shown. (See attached diagram.) Figure 5 Place the positioning tool 6 on the lower skin plate 7, so that the lower skin plate 7 is located in the notch at the bottom of the positioning tool 6, and make the side wall 62 of the notch fit against the end face of the lower skin plate 7.

[0108] In this embodiment, the top wall 61 of the notch is attached to the upper surface of the lower skin plate 7. In other embodiments, there may be a gap between the top wall 61 of the notch and the upper surface of the lower skin plate 7.

[0109] Specifically, the positioning tool 6 has a height of H and a notch at its bottom. This notch provides a space at the bottom of the positioning tool 6 that can accommodate part of the skin plate 7.

[0110] When in use, position the notch of the positioning tool 6 toward the detection point of the lower skin plate 7, and push the positioning tool 6 so that the positioning tool 6 abuts against the end face of the lower skin plate 7.

[0111] Preferably, the positioning tool 6 also has an observation hole 63 extending along its own height, with one side of the inner peripheral wall of the observation hole 63 flush with the side wall 62 of the notch. The observation hole 63 is used to observe whether the end face of the lower skin plate 7 is in contact with the side wall of the notch.

[0112] In this embodiment, H is 200mm.

[0113] The first probe 31 emits laser beams to points T1, T2, and T3 respectively, and calculates the distances L1, L2, and L3 between probe point P1 and T1, probe point P1 and T2, and probe point P1 and T3 respectively. Based on L1, L2, and L3, the coordinates (X1, Y1) of probe point P1 are calculated.

[0114] The first probe 31 sends the coordinates (X1, Y1, H) to the second probe 32.

[0115] The second probe 32 obtains the corresponding coordinates (X2, Y2, H) based on the coordinates (X1, Y1, H), and moves according to these coordinates to locate the coordinates of the upper skin plate 8. The upper skin plate 8 is placed at the coordinates located by the second probe 32 to achieve the alignment of the upper skin plate 8 and the lower skin plate 7.

[0116] By using the above method one by one, the one-to-one alignment of multiple upper skin plates 8 and multiple lower skin plates 7 can be achieved.

[0117] Alternatively, the automatic positioning device includes a plurality of first probes 31 spaced laterally and a plurality of second probes 32 spaced laterally, with each first probe 31 corresponding to a second probe 32. Each first probe 31 is connected to a first moving mechanism, and each second probe 32 is connected to a second moving mechanism. The plurality of probes spaced laterally can simultaneously align the plurality of upper skin panels 8 and the plurality of lower skin panels 7 spaced laterally, shortening the alignment time of the plurality of upper skin panels 8 and the plurality of lower skin panels 7 and improving the production efficiency of refrigerated truck body panels.

[0118] In another embodiment (not shown), multiple marker points are pre-marked on the first and second support surfaces using the aforementioned automatic positioning device, and there is a unique one-to-one correspondence between the marker points on the first and second support surfaces. When placing the upper skin plate 8 and the lower skin plate 7, they are placed according to the one-to-one correspondence of the marker points to achieve alignment of the upper skin plate 8 and the lower skin plate 7.

[0119] The foaming device 5 is provided in relation to the first conveying device 1. The foaming device 5 is used to foam the material and spray it onto the lower skin plate 7 on the first conveying device 1.

[0120] The foaming equipment 5 includes storage tanks, a metering device, and a nozzle 51. The storage tanks are used to store raw materials. There are multiple storage tanks, each storing different raw materials. The metering device is located downstream of the storage tanks and is used to measure the output raw materials. Each storage tank corresponds to one metering device.

[0121] The nozzle 51 is located downstream of the metering device to spray the foam material. The metered raw materials enter the nozzle 51 and are mixed inside the nozzle 51. The mixed material is then sprayed out.

[0122] The nozzle 51 of the foaming device 5 is positioned above the first conveying device 1 and suspended on the pressing device 4. That is, the nozzle 51 is located at the junction of the first conveying device 1 and the pressing device 4. The spray direction of the nozzle 51 is vertically downward. In this embodiment, the nozzle 51 is mounted on a support facing the end face of the first conveyor.

[0123] There can be one or more foaming devices 5. When there is only one foaming device 5, multiple skin plates arranged longitudinally at intervals are sprayed by the movement of the first conveying device 1, and multiple lower skin plates 7 arranged laterally at intervals are sprayed sequentially by the movement of the nozzle 51 laterally. Specifically, a guide rail extending laterally is provided on the end face of the support, and the nozzle 51 can move along the guide rail.

[0124] Foaming equipment 5 can also be multiple, such as Figure 6 As shown, the nozzles 51 of multiple foaming devices 5 are arranged sequentially along the horizontal direction. The arrangement of multiple foaming devices 5 shortens the time for spraying foam material onto multiple skin panels, thereby improving the preparation efficiency of refrigerated truck body panels. In this embodiment, there are four foaming devices 5, with four nozzles 51 arranged horizontally and their positions adjustable by moving horizontally, allowing simultaneous spraying onto four lower skin panels 7 arranged horizontally.

[0125] Among the multiple lower skin plates 7 conveyed by the first conveying device 1, see [reference] Figure 7 There is a gap between two adjacent lower skin plates 7 along the longitudinal direction. Within the distance between the two adjacent lower skin plates 7, the large piston of the nozzle 51 is closed, and the nozzle 51 continuously injects material under high pressure. Furthermore, when the first conveying device 1 moves to the next lower skin plate 7, it stops. After the nozzle 51 starts injecting and spraying the foam material, the first conveying device 1 continues to move.

[0126] While the large piston of the nozzle 51 is shut off to continuously inject high-pressure material, the first conveying device 1 stops conveying the next skin plate 7 to the injection point. The first conveying device 1 is only started after the nozzle 51 begins to inject and spray the foam material. This avoids the time difference that may occur when the large piston of the nozzle 51 is opened, which may cause the injection point to shift. This ensures the injection position on the lower skin plate 7 and guarantees the quality of the refrigerated truck body panel.

[0127] It should be noted that the time difference is affected by the actual signal transmission speed and the hydraulic pressurization time, rather than being a fixed value, and therefore cannot be corrected by a single adjustment.

[0128] Each nozzle 51 can be set with its own injection start time and stop time according to the length of its corresponding lower skin plate 7. That is, the injection time of each nozzle 51 corresponds to the length of the lower skin plate 7. Specifically, when the first conveying device 1 moves the corresponding lower skin plate 7 to the nozzle 51, the nozzle 51 starts to inject foam material. As the first conveying device 1 moves, the nozzle 51 stops injecting foam material when the lower skin plate 7 just leaves the nozzle 51 along the conveying direction.

[0129] The starting and ending times of the injection nozzle 51, as well as the moving speed of the first conveying device 1, are set according to the position of the lower skin plate 7 on the first support surface. Therefore, the foaming device 5 can simultaneously spray foam material onto lower skin plates 7 of different sizes.

[0130] In this embodiment, the refrigerated truck body panel preparation device achieves automatic alignment of the upper skin panel 8 and the lower skin panel 7 through an automatic positioning device. Foam material is sprayed onto the lower skin panel 7 on the first conveying device 1 through the nozzle 51 of the foaming device 5. During the spraying process, the lower skin panel 7 moves with the first conveying device 1. The upper skin panel 8 and the lower skin panel 7 are respectively conveyed into the pressing device 4 by the first conveying device 1 and the second conveying device 2. The second conveying device 2 is raised by the lifting mechanism in the pressing device 4. The upper skin panel 8 is adsorbed by the adsorption device and suspended in the pressing device 4. The lifting mechanism raises the first conveying device 1 and presses the lower skin panel 7 and the upper skin panel 8.

[0131] When the nozzle 51 sprays the foam material, during the interval between the two lower skin plates 7, the large piston of the nozzle 51 is closed, and the nozzle 51 continues to inject material under high pressure. When the next lower skin plate 7 moves to the nozzle 51, the first conveying device 1 stops moving. After the nozzle 51 starts spraying foam material, the first conveying device 1 continues to move. Therefore, the time difference caused by the opening of the large piston of the nozzle 51 is avoided, which causes the starting point to shift, ensuring the starting position on the lower skin plate 7 and ensuring the quality of the refrigerated truck body panel.

[0132] This invention also provides a method for preparing a refrigerated truck body panel, comprising the following steps:

[0133] S1. Place multiple lower skin plates 7 at intervals on the first conveying device 1.

[0134] Specifically, multiple lower skin plates 7 can be arranged at intervals along the longitudinal direction. Multiple lower skin plates 7 can also be arranged at intervals along the transverse direction, or multiple lower skin plates 7 can be arranged at intervals in multiple rows and columns.

[0135] S2. Construct a plane coordinate system using the first support surface of the first conveying device 1, and detect and calculate the coordinates (X1, Y1) of the detection point on the lower skin plate 7.

[0136] Specifically, the four vertices of the first support surface are defined as T0, T1, T2, and T3, with vertex T0 being the origin. One vertex P1 on the lower skin plate 7 is defined as the detection point. The first probe 31 is moved directly above the detection point, and laser beams are emitted to points T1, T2, and T3 respectively. The distances L1, L2, and L3 between detection points P1 and T1, P1 and T2, and P1 and T3 are calculated respectively. The coordinates (X1, Y1) of P1 are then calculated based on L1, L2, and L3.

[0137] The height difference between the first probe 31 and P1 is H. H is the height difference between the second support surface and the first support surface. This height difference is ensured by the positioning tool 6.

[0138] The height of positioning tool 6 is H, and the method is as follows:

[0139] After placing the lower skin plate 7, the notch of the positioning tool 6 is locked onto one corner of the lower skin plate 7, and the first probe 31 is moved so that the lower end of the first probe 31 abuts against the upper surface of the positioning tool 6.

[0140] S3. A second conveying device 2 is provided, and the conveying directions of the second conveying device 2 and the first conveying device 1 are both extended longitudinally. A plane coordinate is constructed with the second support surface of the second conveying device 2, and the origin of the plane coordinate corresponds to the origin of the first support surface.

[0141] The phrase "the origin of the second support surface corresponds to the origin of the first support surface" means that the origin of the second support surface is located in the same position as the origin of the first support surface on the first support surface. For example, both are located at the lower left or upper left corner of the plane coordinate system.

[0142] S4. Based on the coordinates (X1, Y1) of the detection point of the lower skin plate 7, locate the coordinates (X2, Y2) on the second support surface, and place the upper skin plate 8 at the coordinates (X2, Y2) in a manner corresponding to the lower skin plate 7 to achieve the alignment of the upper skin plate 8 and the lower skin plate 7, where X1 = X2 and Y1 = Y2.

[0143] Because the origin of the first support surface corresponds to the origin of the second support surface, the coordinates (X1, Y1) and (X2, Y2) also correspond, thus achieving the alignment of the upper skin plate 8 and the lower skin plate 7.

[0144] In addition, the height difference between the second support surface and the first support surface is H. The coordinates (X1, Y1, H) directly above the detection point are obtained by using a positioning tool with a height of H, and the positioning coordinates (X2, Y2, H) on the second support surface are obtained.

[0145] Specifically, the positioning tool is placed on the lower skin plate, so that the lower skin plate is located in the notch at the bottom of the positioning tool, and the side wall of the notch is in contact with the end face of the lower skin plate.

[0146] S5. Start the second conveying device 2, convey the upper skin plate 8 into the pressing device 4, lift the second conveying device 2 through the lifting mechanism, and adsorb the upper skin plate 8 through the adsorption mechanism, and then exit the second conveying device 2.

[0147] After positioning is completed, the upper skin plate 8 is first sent to the pressing device 4 by the second conveying device 2. The upper skin plate 8 is then adsorbed and suspended in the pressing device 4 by the action of the lifting mechanism and the adsorption mechanism.

[0148] S6. Start the first conveying device 1 to move the lower skin plate 7 toward the pressing device 4, and during the movement of the first conveying device 1, the foam material is sprayed onto the lower skin plate 7.

[0149] Specifically, when the first conveying device 1 conveys multiple lower skin plates 7 arranged at longitudinal intervals,

[0150] When the first conveying device 1 moves to the interval between two adjacent lower skin plates 7, it stops the nozzle 51 from spraying foam material and keeps the nozzle 51 injecting material under high pressure.

[0151] The first conveying device 1 stops moving when it moves to the next lower skin plate 7 of the two longitudinally adjacent lower skin plates 7.

[0152] Turn on the nozzle 51 to spray foam material, and start the first conveyor 1 to continue moving.

[0153] S7. After entering the pressing device 4, the lifting mechanism raises the first conveying device 1 and presses the lower skin plate 7 and the upper skin plate 8 to obtain the refrigerated truck body panel.

[0154] By constructing a planar coordinate system and detecting and calculating the coordinates of one vertex on the lower skin panel 7, the coordinates of the upper skin panel 8 are located based on these coordinates, thus achieving alignment between the upper skin panel 8 and the lower skin panel 7. Through the cooperation of the first conveying device 1 and the nozzle 51, during the interval between two adjacent lower skin panels 7, the nozzle 51 stops spraying foam material but maintains high-pressure injection. Simultaneously, when the next lower skin panel 7 moves to the nozzle 51, it stops first, and the first conveying device 1 moves only after the nozzle 51 begins spraying. This avoids time lag, ensures the spraying effect, and guarantees the quality of the refrigerated truck body panels.

[0155] The above preparation method can simultaneously foam and cure multiple refrigerated truck body panels, thus producing multiple refrigerated truck body panels at once. This effectively spreads out the curing time waiting for the equipment and improves equipment utilization.

[0156] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A refrigerated truck body panel preparation device, characterized in that, It includes a first conveying device, a second conveying device, an automatic positioning device, a pressing device, and a foaming device; The first conveying device can simultaneously convey multiple lower skin plates into the pressing device; the second conveying device can simultaneously convey multiple upper skin plates into the pressing device. The foaming equipment is used to foam material and spray the foam material onto the lower skin plate located on the first conveying equipment; The pressing device includes a lifting mechanism and an adsorption mechanism; the lifting mechanism is used to lift up multiple upper skin plates, the adsorption mechanism is used to adsorb the multiple upper skin plates lifted by the lifting mechanism, and the lifting mechanism is also used to lift up multiple lower skin plates and press the lower skin plates and the upper skin plates. The automatic positioning device is used to align the multiple upper skin plates and the multiple lower skin plates one by one; The automatic positioning device includes a first moving mechanism corresponding to the first conveying device and a first probe connected to the first moving mechanism, a second moving mechanism corresponding to the second conveying device and a second probe connected to the second moving mechanism, and both the first moving mechanism and the second moving mechanism are capable of movement; In this system, the first support surface on the first conveying device and the second support surface on the second conveying device are used as planar coordinates, with the origins of the two planar coordinates corresponding to each other. The first probe is used to detect the coordinates (X1, Y1) of the detection point of the lower skin plate located on the first support surface. The detection point is one of the vertices of the upper skin plate. The second moving mechanism moves the second probe according to the coordinates of the first probe, so that the coordinates of the second probe are (X2, Y2), where X1 = X2 and Y1 = Y2. The upper skin plate is arranged on the second support surface according to the coordinates (X2, Y2) of the second probe. The first moving mechanism moves the first probe to detect the coordinates of the detection points of multiple upper skin plates, thereby realizing the one-to-one alignment of multiple lower skin plates and multiple upper skin plates.

2. The refrigerated truck body panel preparation device according to claim 1, characterized in that, Taking one of the vertices of the first support surface as the origin, the first probe detects the coordinates of the detection point of the lower skin plate to the remaining three vertices of the first support surface, and calculates the coordinates (X1, Y1) of the detection point.

3. The refrigerated truck body panel preparation device according to claim 1, characterized in that, Both the first moving mechanism and the second moving mechanism include two longitudinal rails spaced laterally, a support frame that slides with the two longitudinal rails and can move longitudinally, a transverse moving mechanism disposed on the support frame and capable of moving laterally, and a lifting mechanism connected to the transverse moving mechanism. The lifting mechanism can lift and lower. The two longitudinal rails of the first moving mechanism are arranged on both sides of the first conveying device, and the two longitudinal rails of the second moving mechanism are arranged on both sides of the second conveying device. The first probe is mounted on the lifting mechanism of the first moving mechanism, and the second probe is mounted on the lifting mechanism of the second moving mechanism.

4. The refrigerated truck body panel preparation device according to claim 1, characterized in that, There is a height difference between the second support surface and the first support surface, and the second support surface is higher than the first support surface; The height difference H between the first probe and the first support surface is equal to the height difference between the second support surface and the first support surface, so that the coordinates of the second probe are (X2, Y2, H).

5. The refrigerated truck body panel preparation apparatus according to claim 1, characterized in that, The number of foaming devices is multiple, and each foaming device includes a nozzle. The nozzles of the multiple foaming devices are arranged side by side in a horizontal direction. Each nozzle is disposed on the pressing device and faces the first conveying device. Each of the aforementioned gun heads is capable of moving laterally.

6. The refrigerated truck body panel preparation apparatus according to claim 5, characterized in that, There is a gap between two adjacent lower skin plates along the longitudinal direction. In the corresponding gap, the large piston of the gun head is closed, and the gun head continuously injects material under high pressure. In the two adjacent lower skin plates along the longitudinal direction, when the first conveying device moves to the next lower skin plate, the first conveying device stops moving. After the nozzle starts spraying foam material, the first conveying device continues to move.

7. The refrigerated truck body panel preparation apparatus according to claim 5, characterized in that, Each of the aforementioned nozzles can have its injection start time and injection stop time set according to the length of its corresponding lower skin plate. The injection start time and stop time of the nozzle, as well as the moving speed of the first conveying device, are set according to the position of the lower skin plate on the first conveying device.

8. The refrigerated truck body panel preparation apparatus according to claim 1, characterized in that, The second conveying device includes a plurality of support members spaced apart and a plurality of support adsorption members spaced apart. The tops of the plurality of support members and the tops of the support adsorption members are flush and form a second support surface of the second conveying device. The support member includes a support rod and a support block disposed on the top of the support rod. The support block is made of rubber. The support adsorption member includes a vertical rod, an adsorption plate disposed on the top of the vertical rod, and a vacuum pump connected to the adsorption plate.

9. The refrigerated truck body panel preparation apparatus according to claim 8, characterized in that, The support member and the support adsorption member are arranged alternately, and the distance between any adjacent support member and the support adsorption member is less than or equal to 1m; The second conveying device further includes a longitudinal reference member and a transverse reference member. The longitudinal reference member forms one side of the longitudinal direction of the second support surface, and the transverse reference member forms one end of the transverse direction of the second support surface. The longitudinal reference member extends longitudinally, and the transverse reference member extends transversely. The second conveying device further includes a limiting member disposed on the longitudinal reference member and the transverse reference member and extending upward beyond the second support surface.

10. A method for preparing a refrigerated truck compartment panel, characterized in that, Includes the following steps: Multiple lower skin plates are placed at intervals on the first conveying equipment; Using the first support surface of the first conveying device to construct a planar coordinate system, the coordinates (X1, Y1) of the detection point on the lower skin plate are detected and calculated. A second conveying device is provided, wherein the conveying direction of the second conveying device and the first conveying device both extend longitudinally, and a plane coordinate is constructed with the second support surface of the second conveying device, and the origin of the plane coordinate corresponds to the origin of the first support surface; Based on the coordinates (X1, Y1) of the detection point of the lower skin plate, the coordinates (X2, Y2) are located on the second support surface, and the upper skin plate is placed at the coordinates (X2, Y2) in a manner corresponding to the lower skin plate, thereby achieving the alignment of the upper skin plate and the lower skin plate, where X1 = X2 and Y1 = Y2. Start the second conveying device to convey the upper skin plate into the pressing device, lift the second conveying device by the lifting mechanism, and use the suction mechanism to hold the upper skin plate in place, then remove the second conveying device; Start the first conveying device to move the lower skin plate toward the pressing device, and during the movement of the first conveying device, the foam material is sprayed onto the lower skin plate; After the first conveying device enters the pressing device, the lifting mechanism raises the first conveying device and presses the lower skin plate and the upper skin plate to obtain the refrigerated truck body panel.

11. The method for preparing a refrigerated truck compartment panel according to claim 10, characterized in that, The height difference between the second support surface and the first support surface is H. The coordinates (X1, Y1, H) directly above the detection point are obtained by a positioning tool with a height of H, and the positioning coordinates (X2, Y2, H) on the second support surface are obtained. The positioning tool is placed on the lower skin plate, such that the lower skin plate is located in the notch at the bottom of the positioning tool, and the sidewall of the notch is in contact with the end face of the lower skin plate.

12. The method for preparing a refrigerated truck compartment panel according to claim 10, characterized in that, When the first conveying device conveys multiple lower skin plates arranged at longitudinal intervals... When the first conveying device moves to the interval between two adjacent lower skin plates, it stops spraying foam material from the nozzle and keeps the nozzle injecting material under high pressure. The first conveying device stops moving when it moves to the next lower skin plate of two longitudinally adjacent lower skin plates; Turn on the nozzle to spray foam material, and start the first conveying device to continue moving.

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