Packing method for the packing line of shaft parts

Abstract

The present invention relates to the technical field of intelligent equipment, and specifically discloses a packing method for a shaft part packing line, which includes a feeding device, a material feeding device and a packing device. The material feeding device is used to push the parts loaded by the feeding device onto the packing device for packing. The feeding device includes an inclined frame, a limiting member and a pushing mechanism. The limiting member protrudes from the inclined frame. The pushing mechanism includes a push plate that can be lifted and lowered, and a guiding surface with the same inclination direction as the inclined frame is provided on the push plate. It also includes a limiting part, which is located above the inclined frame before the push plate ejects. The distance between the limiting part and the inclined frame only allows single-row parts to pass through. This solution solves the problem of unstable feeding quantity in the part feeding process before part packing in the prior art.

Description

[0001] This application is a divisional application of the patent application with the application date of May 27, 2022, the application number of 202210594248X, and the invention title of Shaft Parts Packing Line and Its Packing Method. Technical Field

[0002] The present invention relates to the technical field of intelligent equipment, and particularly relates to a packing method for a shaft parts packing line. Background Art

[0003] In the packing of shaft parts, especially for long shaft parts such as copper pipes and steel pipes, during packing, generally a certain number of parts are directly bundled and then put into a packaging bag (the number of bundled parts is generally 5 - 20 for convenient selling or using). However, because the bundling effect is different each time for simple bundling, and after the parts are grouped and packed, the grouped parts still need to be stacked for subsequent storage or transportation. It is very difficult to ensure the regularity after stacking for the grouped parts with different bundling effects, which in turn results in a small number of parts that can be stacked in a fixed space, and is also not conducive to the stability during transportation.

[0004] To solve the above problems, in the prior art, the grouped parts for packaging are improved so that the cross-section of the bundled grouped parts is a regular polygon structure, such as the most common regular hexagon structure. Although this method can make the grouped parts stack neatly, when packing the regular hexagon grouped parts, a special packing rack is needed to shape multiple parts into a regular hexagon structure, then bundle the grouped parts in a hexagon structure, and then send the bundled grouped parts into the packaging bag that is stretched and laid flat by the film pulling mechanism through a pushing mechanism to complete bagging. After bagging, the end of the packaging bag is sealed by a sealing mechanism. And for the sake of the stability during transportation or storage, multiple grouped parts are stacked neatly and then bundled into a large bundle again. However, due to the structural limitation of the regular hexagon grouped parts, if fast stacking is to be achieved, it can be stacked as shown in Figure 1 the situation shown, but due to the edges and corners of the regular hexagon structure of the grouped parts, there are diamond-shaped gaps between adjacent grouped parts after stacking. On the one hand, it leads to less compact stacking, and on the other hand, some parts around the diamond-shaped gaps have no support and are easily squeezed loose or even broken by the pressure of the upper parts, causing safety problems; if for the sake of more stable stacking, it is stacked as shown in Figure 2 the state shown. Although this method can make the stacking more stable, when placing the grouped parts in a stacked manner, the parts need to be accurately placed into the dovetail sunk grooves formed between the grouped parts, which increases the difficulty of putting the grouped parts in, that is, increases the cost of stacking.

[0005] In addition, before packing the existing parts group, it is necessary to ensure that the number of parts in each packaging bag is the same every time. To automatically send out a certain number of parts, in the prior art, a parts feeding device is often used to put the parts. Specifically, in the feeding device, several shaft parts are placed on an inclined rack, and multiple parts will move towards the lower end of the inclined rack under their own gravity. A limiting member for restricting the shaft parts from moving forward is provided on the inclined rack, and a pushing mechanism is installed below the inclined rack. The pushing mechanism is provided with a push block that can be lifted. The top of the push block is provided with an inclined guiding surface, and the inclination direction of the guiding surface is the same as the inclination direction of the inclined rack. When parts need to be fed, the push block is lifted upwards, so that the push block lifts the parts originally placed on the inclined rack. The lifted parts cross the limiting member and fall obliquely along the guiding surface of the push block. After the parts fall from the inclined surface, they can be sent to the next process by other structures. By pushing out the parts one by one through the pushing mechanism, it is ensured that the number of parts fed each time is the same, and thus the quantity control of the fed parts is achieved. However, in the prior art, the parts stacked on the inclined rack are not just parts arranged in a row, but parts stacked in different layers, resulting in a variable number of parts fed each time, which affects the normal progress of parts packing. Summary of the Invention

[0006] The present invention aims to provide a shaft parts packing line to solve the problem of unstable feeding quantity in the parts feeding process before parts packing in the prior art.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] The shaft parts packing line includes a feeding device, a material conveying device, and a packing device. The material conveying device is used to push the parts fed by the feeding device onto the packing device for packing. The feeding device includes an inclined rack, a limiting member, and a pushing mechanism. The limiting member protrudes from the inclined rack. The pushing mechanism includes a push plate that can be lifted. The push plate is provided with a guiding surface with an inclination direction the same as that of the inclined rack. It further includes a quantity limiting member, which is located above the inclined rack before the push plate ejects. The distance between the quantity limiting member and the inclined rack only allows single-row parts to pass through.

[0009] The principle and advantages of this solution are as follows: In actual application, the feeding device quantitatively feeds the parts. The parts after feeding are sent by the feeding device to the packing device for packing. When feeding, when multiple shaft parts stacked on the inclined rack move towards the limiting part, since the distance between the limiting part and the inclined rack only allows a single row of parts to pass through, it is ensured that the stacked shaft parts can only fall to the bottom layer of the inclined rack and then continue to move along the inclined rack to the position where the limiting part is located, ensuring that the shaft parts blocked by the limiting part are always a single row of parts. On the basis that the parts are in a single row, when the pushing mechanism drives the push plate to rise, the parts located between the end of the push plate and the end face of the limiting part are pushed up to exceed the height of the limiting part, and the shaft parts roll to the other side of the limiting part along the guiding surface of the push plate under their own gravity, completing one-time feeding of the shaft parts. In this solution, since the parts are arranged in a single row before being pushed by the push plate, that is, there is no situation where there is partial stacking above the parts pushed out by the push plate, that is, it is ensured that the number of parts pushed by the push plate each time is fixed, ensuring the accuracy of the feeding parts quantity and solving the problem of unstable feeding parts quantity existing in the prior art when feeding shaft parts.

[0010] Preferably, as an improvement, the limiting part is connected with a height adjusting mechanism. The height adjusting mechanism is installed on the inclined rack, and the height adjusting mechanism is used to adjust the distance between the limiting part and the inclined rack.

[0011] Beneficial effects: Through the setting of the height adjusting mechanism in this solution, when feeding shaft parts with different outer diameters, the distance between the limiting part and the inclined rack can be adjusted by adjusting the height adjusting mechanism according to the different outer diameters of the shaft parts, ensuring that there is always only one row of shaft parts after the shaft parts pass through the limiting part, and improving the applicability of the feeding device.

[0012] Preferably, as an improvement, the feeding device further includes a rotatable limiting disk. The number of limiting parts is multiple, and multiple limiting parts are fixedly connected to the circumference of the limiting disk, and the included angles formed between adjacent limiting parts and the center of the limiting disk are different.

[0013] Beneficial effects: The included angles formed between adjacent limiting parts and the center of the limiting disk in this solution are different, so that when the limiting disk rotates by the same angle, the distances between different limiting parts and the end of the push plate change. Therefore, when the push plate pushes out shaft parts with different outer diameters, it is convenient to ensure that the number of parts pushed by the push plate each time is the same without adjusting the position of the end of the push plate, further improving the practicability of this solution.

[0014] Preferably, as an improvement, a separating protrusion is provided at the end of the guiding surface of the push plate, and the separating protrusion is located between the limiting part and the limiting member.

[0015] Beneficial effects: Through the arrangement of the separating protrusions in this solution, when the push plate pushes the shaft parts to rise, the shaft parts that do not need to be pushed out are separated from the shaft parts to be pushed out by the separating protrusions. This avoids the situation where the shaft parts that do not need to be pushed out are pushed out by the push plate and rise a certain height, and then roll above other shaft parts due to the loss of support, resulting in the stacking of shaft parts. It not only avoids the stacking situation before the parts are pushed out, but also avoids the damage to the appearance of the parts caused by the parts being lifted to a certain height and then falling.

[0016] Preferably, as an improvement, the packaging device includes a film pulling mechanism, a support mechanism, and a lifting mechanism installed on the frame. The film pulling mechanism is used to open and flatten the packaging bag. The support mechanism includes at least two support plates. The lifting mechanism is arranged above the support plates. The lifting mechanism includes a three-dimensional space mover and a gripper. The gripper is installed at the output end of the three-dimensional mover. The gripper includes a support plate and a pressing plate. A driver for driving the pressing plate to lift is connected to the pressing plate. The pressing plate is located above the support plate.

[0017] Advantageous effects: When adopting this solution, the feeding device pushes a certain quantity of randomly stacked parts into the packaging bag that is expanded and laid flat by the film pulling mechanism. Then, the supporting mechanism supports the parts in the packaging bag. Next, the pallet of the lifting mechanism lifts the packaging bag containing multiple parts. After the packaging bag is lifted, the pressing plate of the lifting mechanism presses down on the parts. Since the pressing plate and the pallet clamp the parts from the upper and lower sides of the parts (after the packaging bag is clamped, a sealing device can be used to seal the two ends of the packaging bag or tie the two ends of the packaging bag tightly), even if the parts are stacked, they will be pressed into a single-row arrangement by the squeezing force between the pressing plate and the pallet, ensuring that the parts in the packaging bag can be stably clamped by the pressing plate and the pallet. Furthermore, when the three-dimensional space mover of the lifting device transfers the parts, the relative positions between adjacent parts will not move, ensuring that after the lifting mechanism places the packaging bag with parts at the stacking position, the single-row arrangement positions between adjacent parts remain basically unchanged. When the lifting mechanism clamps and stacks the part groups, since each part group is arranged in a single row, two or more part groups in the bottom layer (i.e., the first layer) can be laid first, and then the part groups in the second layer can be laid. During the stacking process of the part groups, the number of part groups in each layer is ensured to be the same, and the part groups between adjacent layers are staggered by a distance equal to the radius of a part, thereby ensuring that after stacking, the cross-section of the stacked multiple part groups is square or rectangular. Compared with the prior art, this solution saves the equipment cost, the process time-consuming cost of bundling, and the cost of bundling straps brought by bundling because it cancels the bundling of each part group, which is beneficial to shortening the part packaging time and improving the process efficiency, and is also beneficial to reducing the packaging cost. In addition, since the parts in each part group are arranged in a single row, and the parts between the upper and lower adjacent layers are only staggered by a distance equal to the radius of a part, except for one part in each layer of part groups that is supported by only one part on one side of the part, the rest of the parts are supported by two parts on the left and right at the same time. It can be seen that all parts are basically fully supported, which also ensures that even if the stacking height is relatively high, the stacked body in the shape of a rectangle or a square can still be stably stacked. That is to say, this solution takes into account the low cost, high efficiency, and stacking stability of packaging.

[0018] Preferably, as an improvement, the number of the grippers is two, and the distance between the two grippers can be adjusted.

[0019] Advantageous effects: The distance between the two grippers in this solution can be adjusted, so that even if the length dimensions of different shaft parts are different, the distance between the two grippers can be adjusted according to the length of the shaft parts to suit the clamping position requirements of shaft parts with different lengths, ensuring the stable clamping and transfer of different shaft parts.

[0020] Preferably, as an improvement, the packing device further includes a product conveyor line, which includes a first conveying section and a second conveying section. A bundling machine is arranged between the first conveying section and the second conveying section, and rotatable retaining rollers one and two are arranged on both sides of the first conveying section.

[0021] Beneficial effects: When adopting this solution, when the lifting mechanism holds and transfers the part group with packaging bags, the part group can be placed on the first conveying section for stacking. During stacking, the first conveying section does not convey. After multiple part groups are stacked, start the first conveying section and the second conveying section, so that the stacked part groups are gradually sent to the bundling machine. The bundling machine first bundles one end of the stacked part groups, and then the stacked part groups continue to move towards the second conveying section. The middle part of the stacked part groups falls within the bundling range of the bundling machine, and the bundling machine packs the middle part of the stacked part groups. Finally, after the parts completely move onto the second conveying section, the bundling machine bundles the other end of the stacked part groups, ensuring that the stacked part groups are completely bundled, and the bundling process is simple and convenient.

[0022] In addition, with the arrangement of the rotatable retaining rollers one and two in this solution, when multiple part groups are stacked on the first conveying section, the stacked part groups are restricted between the retaining rollers one and two, and the stacking width is limited by the retaining rollers one and two, which is beneficial to improving the stacking stability of multiple part groups. On the basis of ensuring the stacking stability, it is also beneficial to facilitate the stacking of multiple part groups higher.

[0023] Preferably, as an improvement, the distance between the retaining rollers one and two can be adjusted.

[0024] Beneficial effects: This solution can adjust the distance between the retaining rollers one and two according to different stacking width requirements, improving the practicability of this solution.

[0025] Preferably, as an improvement, the packing device further includes a temporary storage mechanism, which includes a lifting frame and two transfer conveyor lines. The transfer conveyor lines are installed on the lifting frame. The second conveying section is a roller conveyor line. The transfer conveyor lines are arranged between adjacent rollers of the second conveying section, and the conveying direction of the transfer conveyor lines is perpendicular to the conveying direction of the second conveying section.

[0026] Beneficial effects: When multiple part groups stacked on the product conveyor line need to be temporarily removed from the product conveyor line, the lifting frame can be raised so that the transfer conveyor lines lift and transfer the part groups on the second conveying section, and the transfer of the part groups from the product conveyor line can be realized. The transfer operation is simple and convenient.

[0027] In addition, in order to facilitate the weighing of stacked products, a weighing platform can be set at one end of the transfer conveyor line to facilitate the weighing of the stacked part groups transferred out. After weighing, they are then sent back to the second conveyor line by the transfer conveyor line; this solution enables fast transfer and simple and convenient weighing even for products with large volume and large weight (about 6m * 0.6m * 0.5m in length, width and height and about 1 ton in weight), further improving the practicality of this solution.

[0028] The packing method of the shaft parts packing line includes the following packing steps:

[0029] S1. Arranging parts in a single row: Multiple parts stacked on the inclined rack form a single-row arrangement after passing through the gap between the limiting member and the inclined rack;

[0030] S2. Feeding parts: The push plate of the pushing mechanism rises, so that the parts blocked by the limiting member are lifted to exceed the height of the limiting member, and the parts exceeding the height of the limiting member slide down along the guiding surface;

[0031] S3. Pushing parts onto the packing device: When the pushing mechanism pushes out a set number of parts, the feeding device is started, so that the feeding device pushes the parts onto the packing device;

[0032] S4. The packing device packs the parts.

[0033] Beneficial effects: This method ensures the accuracy of the number of parts fed and the whole operation process is simple and convenient. Description of the drawings

[0034] Figure 1 It is a schematic diagram of the packing and stacking method of shaft parts in the prior art;

[0035] Figure 2 It is a schematic diagram of the packing and stacking method of shaft parts in the prior art;

[0036] Figure 3 It is a schematic diagram of the packing and stacking method of shaft parts of the present invention;

[0037] Figure 4 It is a three-dimensional structure schematic diagram of the embodiment of the present invention;

[0038] Figure 5 It is a three-dimensional structure schematic diagram of the feeding device of the embodiment of the present invention from another angle;

[0039] Figure 6 For Figure 5 The enlarged schematic diagram of part I;

[0040] Figure 7 For Figure 5 The enlarged schematic diagram of part II;

[0041] Figure 8 The left view of Figure 5 ;

[0042] Figure 9 The enlarged schematic view of part III in Figure 8 ;

[0043] Figure 10 The schematic structural view when the position-limiting part of the loading device is rod-shaped;

[0044] Figure 11 The enlarged schematic view of part A in Figure 4 ;

[0045] Figure 12 The three-dimensional structural view of the lifting mechanism in the embodiment of the present invention;

[0046] Figure 13 The enlarged schematic view of part B in Figure 12 ;

[0047] Figure 14 The three-dimensional structural view of the gripper in Figure 12 ;

[0048] Figure 15 The front view of Figure 14 ;

[0049] Figure 16 The enlarged schematic view of part C in Figure 4 ;

[0050] Figure 17 The schematic connection view of the temporary storage mechanism and the second conveying section of the roller conveyor line in the embodiment of the present invention;

[0051] Figure 18 The structural view of the elevator and the lifting frame in Figure 17 ; Specific embodiments

[0052] The following is a further detailed description through specific embodiments:

[0053] The reference numerals in the accompanying drawings of the specification include: loading device 900, inclined frame 91, auxiliary inclined plate 99, height adjustment mechanism 92, lifting regulator 921, lifting adjustment frame 922, limiting member 93, connecting plate 94, turntable 951, rotating shaft 952, positioning rod 953, positioning hole 954, limiting disk 955, limiting member 95, pushing mechanism 96, pushing plate 961, separating protrusion 962, turning plate 97, driving component 971, collecting groove 1, pushing plate 2, synchronous plate 3, packaging device 1000, unwinding mechanism 100, film pulling mechanism 200, film pulling seat 21, film pulling frame 22, first rack 23, starting motor 24, supporting mechanism 300, supporting plate 31, lifting mechanism 400, fixing frame 4, gripper 40, first linear module 41, mounting frame 42, driving motor 43, moving frame 44, second rack 45, lifting module 46, connecting frame 401, supporting plate 402, mounting plate 403, pressing plate 404, connecting column 405, adjusting sleeve 406, sealing mechanism 500, sealing frame 51, upper sealing plate 52, lower sealing plate 53, upper sealing plate expander 54, lower sealing plate expander 55, product conveying line 600, conveying section one 61, conveying section two 62, stop block one 63, stop block two 64, adjusting seat 65, strapping machine 700, temporary storage mechanism 800, lifting frame 81, load-bearing beam 811, connecting beam 812, transfer conveying line 82, weighing platform 83, supporting plate 84.

[0054] The embodiment is basically as shown in the attached Figures 3 to 18 figures. The shaft part packaging line includes a loading device 900, a feeding device, and a packaging device 1000. The loading device 900 is used to control the loading quantity of parts, and the feeding device is used to push the quantitative number of parts loaded by the loading device 900 to the packaging device 1000 for packaging. The specific structure is as follows:

[0055] Combined with Figures 4 to 9 , the loading device 900 includes an inclined frame 91, a height adjustment mechanism 92, a limiting member 93, a rotating mechanism, a limiting member 95, a pushing mechanism 96, and a turning plate 97. The inclined frame 91 includes an inclined section one and an inclined section two, and the inclined section one is more gentle than the inclined section two. An auxiliary inclined plate 99 is rotatably connected to the inclined frame 91. The bottom of the auxiliary inclined plate 99 is connected to a starting machine, and the starting machine uses a cylinder. The output rod of the starting machine can push the auxiliary inclined plate 99 to rotate so that the auxiliary inclined plate 99 extends beyond the upper surface of the inclined section one.

[0056] Combined with Figure 5 、 Figure 6 、 Figure 7 and Figure 9, the height adjustment mechanism 92 is installed on the inclined frame 91. The height adjustment mechanism 92 includes a lifting regulator 921 and a lifting adjustment frame 922. The lifting regulator 921 is fixed on the inclined frame 91. The lifting regulator 921 is used to drive the lifting adjustment frame 922 to lift and lower. The lifting adjustment frame 922 is fixed at the output end of the lifting regulator 921. The lifting adjustment frame 922 is located above the inclined frame 91. A limiting member 93 is fixed on the lifting adjustment frame 922. The limiting member 93 can adopt a rod-shaped structure or a plate-shaped structure. In this embodiment, the limiting member 93 adopts a plate-shaped structure. In this embodiment, the lifting regulator 921 includes a housing, a rotating rod and a screw rod. The rotating rod and the screw rod are both rotatably connected to the housing. The rotating rod is perpendicular to the screw rod. The rotating rod and the screw rod are rotatably connected through a provided bevel gear set, so that when the rotating rod is manually rotated, the screw rod is driven to rotate. The lifting adjustment frame 922 is threadedly connected to the screw rod, and then drives the lifting adjustment frame 922 to lift and lower along the screw rod.

[0057] The limiting member 93 is located above the second inclined section. The distance between the limiting member 93 and the second inclined section is between the outer diameter size of one part and the outer diameter size of two parts.

[0058] Combined with Figure 5 , Figure 6 , Figure 7 and Figure 9 , a connecting plate 94 is fixedly connected to the inclined frame 91. The rotating mechanism includes a turntable 951, a rotating shaft 952 and a positioning rod 953. The turntable 951 is rotatably connected to the connecting plate 94. The rotating shaft 952 is fixedly connected to the turntable 951. A plurality of positioning holes 954 are formed in the turntable 951. The plurality of positioning holes 954 are evenly distributed along the circumferential direction of the turntable 951. A limiting hole is formed in the connecting plate 94. The positioning rod 953 can be inserted into the limiting hole and one of the positioning holes 954 at the same time. A limiting disk 955 is fixed on the rotating shaft 952. A plurality of limiting members 95 are integrally formed on the limiting disk 955. The plurality of limiting members 95 are located in the circumferential direction of the limiting disk 955. The included angles formed between adjacent limiting members 95 and the center of the limiting disk 955 are different. In this embodiment, the limiting member 95 has a serrated structure (as shown in Figures 4 to 9 ), and of course, the limiting member 95 can also be rod-shaped (as shown in Figure 10 ), sheet-shaped or plate-shaped.

[0059] Combined with Figure 5 , Figure 7 and Figure 9, the ejection mechanism 96 includes a push plate 961 and a pusher. The pusher is used to drive the push plate 961 to move up and down. In this embodiment, the push plate 961 is a cylinder. An inclined guide surface with the same inclined orientation as that of the inclined frame 91 is integrally formed on the push plate 961. A partition protrusion 962 is integrally formed at the end of the guide surface of the push plate 961. The partition protrusion 962 is located between the limiting member 93 and the limiting member 95. In this embodiment, the partition protrusion 962 is a tip protrusion. In addition, the partition protrusion 962 can also be a partition piece protruding from the guide surface.

[0060] Combined Figure 4 , Figure 5 , Figure 8 and Figure 9 , a turning plate 97 is also rotatably connected to the lower end of the inclined frame 91 that inclines downward. The middle of the turning plate 97 is rotatably connected to the inclined frame 91. The turning plate 97 is located on the lower side of the second inclined section with a lower position. The turning plate 97 can form an X shape with the second inclined section. A driving component 971 for controlling the rotation of the turning plate 97 is connected to the turning plate 97. In this embodiment, the driving component 971 is a cylinder.

[0061] Combined Figure 5 and Figure 8 , the feeding device includes a collecting trough 1, a pusher, and a pushing plate 2. The collecting trough 1 can receive the parts that fall after the turning plate 97 turns over. The pusher is used to drive the pushing plate 2 to move horizontally (the pusher is not shown in the figure). In this embodiment, a synchronous plate 3 is installed on the collecting trough 1. The pushing plate 2 and the synchronous plate 3 are fixedly connected. A slideway and a guiding rack are installed on the collecting trough 1. Both the slideway and the guiding rack are parallel to the collecting trough 1. The pushing plate 2 is slidably connected to the slideway. The pusher can be a servo motor. The servo motor is fixed on the synchronous plate 3. The output end of the servo motor is fixed with a driving gear. The driving gear meshes with the guiding rack. Thus, after the pusher is started, the synchronous plate 3 moves along the slideway, and then drives the pushing plate 2 to push the multiple shaft-like parts to be packed placed in the collecting trough 1 into the packing device 1000 from the collecting trough 1. To reduce the friction between the shaft-like parts and the collecting trough 1 during the pushing process, needle rollers capable of self-rotation are provided on both the bottom and the side wall of the collecting trough 1. After the turning plate 97 rotates towards the collecting trough 1 driven by the driving component 971, the turning plate 97 pours the parts fed by the feeding device into the collecting trough 1 at one time.

[0062] Combined Figure 4The packaging device 1000 includes a frame, a reeling mechanism 100, a bag opening mechanism, a film pulling mechanism 200, a supporting mechanism 300, a lifting mechanism 400, a film cutting mechanism, a sealing mechanism 500 and a product conveying line 600. The reeling mechanism 100, the bag opening mechanism, the film pulling mechanism 200, the supporting mechanism 300 and the sealing mechanism 500 are all installed on the frame. The reeling mechanism 100 is used to continuously release the packaging bag, the bag opening mechanism is used to open the bag mouth of the packaging bag, and the film pulling mechanism 200 is used to pull the packaging bag out of the bag opening mechanism and lay it flat (that is, keep the bag mouth of the packaging bag open and pull out the packaging bag to achieve the packaging bag being laid flat). The length is greater than that of the shaft parts. The supporting mechanism 300 is used to support multiple parts sent to the packaging bag (multiple parts are placed in the same packaging bag to form a parts group). The lifting mechanism 400 is used to clamp the parts group covered with the packaging bag and drive the parts group to be transferred to the product conveyor line 600 for stacking; the film cutting mechanism is arranged between the bag opening mechanism and the film pulling mechanism 200. The film cutting mechanism is used to cut or melt a packaging bag pulled out by the film pulling mechanism 200 from the unrolled packaging bag. The film cutting mechanism is not shown in the drawings of this embodiment; the sealing mechanism 500 is used to seal the two ends of the packaging bag after the parts group is completed in the packaging bag.

[0063] Specifically, the unwinding mechanism 100 adopts an unwinding roller, and the bag opening mechanism can adopt a bag opening device 500 as disclosed in Chinese Patent Publication No. CN203544409U, or other bag opening structures in the prior art.

[0064] Combination Figure 4 and Figure 11 The film-drawing mechanism 200 includes a film-drawing seat 21, a film-drawing starter and a film-drawing frame 22. The film-drawing seat 21 is slidably connected to a slide rail provided on the frame. The film-drawing frame 22 is fixed on the film-drawing seat 21. The moving direction of the film-drawing frame 22 is parallel to the moving direction of the push plate 2. The film-drawing frame 22 is located between the push plate 2 and the bag opening mechanism. The film-drawing starter is used to drive the film-drawing frame 22 to move along the slide rail. The film-drawing starter includes a starting motor 24, a first gear and a first rack 23. The length direction of the first rack 23 is parallel to the direction of the slide rail. The first gear The starting motor 24 is engaged with the first rack 23, and is fixed on the film-drawing seat 21. The first gear is fixed on the output end of the starting motor 24. The starting motor 24 drives the first gear to rotate, thereby causing the first gear to move along the first rack 23. During the movement, the film-drawing seat 21 also moves synchronously, thereby prompting the film-drawing frame 22 to move. The film-drawing frame 22 pulls the packaging bag out from the side of the bag opening mechanism to flatten the packaging bag. The film-drawing frame 22 can adopt a square sleeve body equipped with a bag clamping mechanism in Chinese Patent Publication No. CN205440946U.

[0065] The support mechanism 300 includes a lifter and at least two support plates 31 for supporting parts. The lifter is used to drive the support plates 31 to move up and down. The lifter adopts a plurality of cylinders fixed on the frame, and each cylinder corresponds to a support plate 31 to facilitate the individual control of the plurality of support plates 31. The middle of the support plate 31 is low and both ends are high.

[0066] Combined Figures 12 to 15 , the lifting mechanism 400 is arranged above the support plate 31. The lifting mechanism 400 includes a fixing frame 4, a three-dimensional space mover, and two grippers 40. The fixing frame 4 is fixed on the ground. The three-dimensional space mover is installed on the fixing frame 4. The support mechanism 300 and the film pulling mechanism 200 are both located below the fixing frame 4. The three-dimensional space mover can drive the entire gripper 40 to move in the X-axis, Y-axis, and Z-axis directions.

[0067] Specifically, the three-dimensional space mover includes a first linear module 41 installed on the fixing frame 4, two second linear modules, and two lifting modules 46. The stroke outputs of the first module, the second module, and the lifting module 46 are perpendicular to each other in pairs. The first linear module 41 adopts a synchronous belt module with double modules and single drive. The synchronous belt module with double modules and single drive includes two module bodies and one drive source. One drive source can drive the two module bodies to move synchronously at the same time. Each module body is slidably connected to the fixing frame 4. The two module bodies are parallel, and an installation frame 42 is fixed between the output ends of the two module bodies. In this embodiment, the installation frame 42 is a gantry frame. The first linear module 41 is used to drive the installation frame 42 to move horizontally (equivalent to the first linear module 41 driving the installation frame 42 to move along the X-axis).

[0068] A second rack 45 and two slide rails parallel to the length direction of the installation frame 42 are fixedly installed on the installation frame 42. Two second linear modules are slidably connected to the slide rails of the installation frame 42. Each second linear module includes a moving frame 44, a driving motor 43, and a second gear. The moving frame 44 is simultaneously slidably connected to the two slide rails of the installation frame 42. The driving motor 43 is fixed on the moving frame 44. The second gear is fixedly connected to the output end of the driving motor 43. The second gear meshes with the second rack 45. The driving motor 43 is used to drive the second gear to rotate, thereby causing the moving frame 44 to move along the slide rail. The moving direction of the moving frame 44 is 90 degrees to the direction in which the installation frame 42 can move, so that the moving direction of the moving frame 44 is equivalent to moving along the Y-axis. The second linear module is used to drive the lifting module 46 to move along the installation frame 42 so that the distance between the two moving frames 44 can be adjusted.

[0069] A lifting module 46 is fixed on each moving frame 44, and a gripper 40 is fixedly connected to the output end of each lifting module 46. The lifting module 46 is used to drive the gripper 40 to move vertically (i.e., move along the Z-axis).

[0070] The gripper 40 includes a connecting frame 401 installed at the output end of the lifting module 46. A first driver and a second driver are fixed on the connecting frame 401. The first driver is a vertically arranged cylinder, and the second driver is a horizontally arranged linear module.

[0071] A support plate 402 is fixedly connected to the output end of the second driver (i.e., on the slider of the linear module). The second driver is used to drive the support plate 402 to move away from or close to the shaft-like part. In this embodiment, the support plate 402 is U-shaped, so that the support plate 402 can be conveniently formed in an integrally formed manner, can be conveniently installed on the slider, and can also conveniently support the shaft-like part by the support plate 402 (when the shaft-like part is located above the support plate 402, the three-dimensional space mover drives the gripper 40 to move upward, and then the support plate 402 supports the shaft-like part).

[0072] The output end of the first driver (i.e., the end of the piston rod of the cylinder) is fixedly connected with a mounting plate 403. A height adjusting member is connected to the mounting plate 403. The bottom of the height adjusting member is connected with a pressing plate 404. The height adjusting member is used to adjust the distance between the pressing plate 404 and the support plate 402. The number of height adjusting members is two, and they are symmetrically distributed about the output end of the cylinder. The first driver is used to drive the pressing plate 404 to move away from or close to the support plate 402, and the pressing plate 404 and the support plate 402 cooperate to clamp the part from the upper and lower sides of the shaft-like part.

[0073] The height adjusting member includes a connecting column 405, an adjusting sleeve 406 and an elastic member. The connecting column 405 is fixedly connected with the pressing plate 404. The adjusting sleeve 406 is threadedly connected to the connecting column 405. The elastic member is located between the pressing plate 404 and the mounting plate 403. The adjusting sleeve 406 and the elastic member are located on both sides of the mounting plate 403, and the adjusting sleeve 406 abuts against the mounting plate 403. In this embodiment, the elastic member is a spring, and the spring is sleeved on the connecting column 405.

[0074] Elastic blocks are provided on the upper surface of the support plate 402 or / and the bottom surface of the pressing plate 404. In this embodiment, elastic blocks are fixed on the bottom surface of the pressing plate 404. The elastic blocks can be made of rubber blocks. When the pressing plate 404 and the support plate 402 clamp the shaft-like part, the elastic blocks can increase the contact area with the shaft-like part under elastic deformation, ensuring that the shaft-like part is not clamped and damaged while clamping the shaft-like part.

[0075] Combined with Figure 4 and Figure 11, there are two sealing mechanisms 500. The two sealing mechanisms 500 seal the two ends of the packaging bag respectively. The sealing mechanism 500 includes a sealing frame 51 slidably connected to the frame, an upper sealing plate 52, a lower sealing plate 53, an upper sealing plate expander 54 and a lower sealing plate expander 55. The sealing frame 51 is driven by a pusher on the frame to move away from or close to the central position of the support plate 31. The upper sealing plate expander 54 is used to drive the upper sealing plate 52 to move downward to approach the lower sealing plate 53, and the lower sealing plate expander 55 drives the lower sealing plate 53 to move upward to approach the upper sealing plate 52. The upper sealing plate 52 and the lower sealing plate 53 clamp the packaging bag from above and below to realize the heat sealing and forming of the packaging bag port.

[0076] Combined with Figure 4 and Figure 16 , the product conveyor line 600 adopts a powered roller conveyor line. The roller conveyor line includes a first conveying section 61 and a second conveying section 62. Both the first conveying section 61 and the second conveying section 62 adopt roller conveyor lines. The first conveying section 61 and the second conveying section 62 both include a support frame and a number of rollers. A bundling machine 700 is arranged between the first conveying section 61 and the second conveying section 62.

[0077] A width limiting mechanism is also installed on the support frame of the first conveying section 61. The width limiting mechanism includes a regulator, a first retaining roller and a second retaining roller. The first retaining roller and the second retaining roller are located on both sides of the first conveying section 61. The regulator includes a bidirectional lead screw and two adjusting seats 65. The two threaded sections of the bidirectional lead screw are respectively installed with adjusting seats 65. The first retaining roller is rotatably connected to one adjusting seat 65, and the second retaining roller is rotatably connected to the other adjusting seat 65. The first retaining roller and the second retaining roller are arranged vertically. The first retaining roller and the second retaining roller are both arranged between adjacent rollers. The first retaining roller and the second retaining roller are both rotatable rotating rollers. The adjusting seat 65 is located below the roller.

[0078] Combined with Figure 17 and Figure 18 , a temporary storage mechanism 800 is arranged above the second conveying section 62. The temporary storage mechanism 800 includes a lifting frame 81 and two transfer conveyor lines 82. The two transfer conveyor lines 82 are parallel to each other. The transfer conveyor line 82 is arranged between adjacent rollers. The conveying direction of the transfer conveyor line 82 is perpendicular to the conveying direction of the roller conveyor line. A weighing platform 83 is arranged between the two transfer conveyor lines 82. The weighing platform 83 is arranged side by side with the roller conveyor line.

[0079] Specifically, the driving mechanism of the lifting frame 81 is a four-column screw linkage elevator, such as a bevel gear screw elevator of the brand Newcard. The elevator is installed on the ground.

[0080] The lifting frame 81 includes two load-bearing beams 811 and three connecting beams 812. The load-bearing beams 811 are perpendicular to the connecting beams 812 and parallel to the rollers. The transfer conveyor line 82 is installed on the load-bearing beams 811, and the connecting beams 812 are located between the two load-bearing beams 811. The space enclosed by two of the connecting beams 812 and two of the load-bearing beams 811 is used to place the weighing platform 83.

[0081] Each transfer conveyor line 82 adopts a chain conveyor line or a belt conveyor line. In this embodiment, a belt conveyor line is adopted. The transfer conveyor line 82 includes a driving wheel and a conveyor belt for conveying. A support plate 31 for supporting the product is fixedly connected to the conveyor belt. An input shaft is fixedly connected between the two driving wheels. It also includes a motor for driving the input shaft to rotate. The motor is fixedly connected to the connecting beam 812, and the output shaft of the motor is in transmission connection with the input shaft through bevel gears.

[0082] The packing method of the above-mentioned shaft part packing line is as follows:

[0083] S1. Arranging parts in a single row: When multiple shaft parts stacked on the inclined frame 91 move towards the limiting part 95, since the distance between the limiting part 93 and the inclined frame 91 only allows a single row of parts to pass through, the stacked shaft parts can only fall to the bottom layer of the inclined frame 91 and then continue to move along the inclined frame 91 to the position where the limiting part 95 is located, ensuring that the shaft parts blocked by the limiting part 95 are always in a single row. S2. Feeding parts: When the pushing mechanism 96 drives the push plate 961 to rise, the shaft parts located between the end of the push plate 961 and the end face of the limiting part 95 are pushed upwards to exceed the height of the limiting part 95. The shaft parts roll along the guiding surface of the push plate 961 under their own gravity to the other side of the limiting part 95. To facilitate uniformly putting multiple parts to be packed each time into the collecting groove 1, the X shape formed between the turning plate 97 and the inclined frame 91 is used to intercept the parts pushed by the push plate 961. When the number of parts reaches the set quantity requirement, the driving component 971 is started, causing the turning plate 97 to rotate and pour multiple parts into the collecting groove 1.

[0084] In this step, since the parts have been arranged in a single row before being pushed by the push plate 961, that is, there is no situation where there is partial stacking above the parts pushed by the push plate 961. That is to say, it is ensured that the number of parts pushed by the push plate 961 each time is fixed, guaranteeing the accuracy of the number of parts fed, and solving the problem of unstable number of parts fed during shaft part feeding in the prior art.

[0085] S3. Pushing parts onto the packing device 1000: After the collecting groove 1 receives multiple shaft parts to be packed, the pusher is started, causing the push plate 961 to move towards the packing device 1000 and pushing the shaft parts in the collecting groove 1 onto the packing device 1000.

[0086] S4. The packing device 1000 packs the parts, and the specific steps are as follows:

[0087] S41. Open and pull out the packaging bag: The unwinding mechanism 100 releases the packaging bag, the released packaging bag is opened by the bag-opening mechanism, then the film-pulling frame 22 of the film-pulling mechanism 200 clamps the bag mouth of the packaging bag, and then the film-pulling starter drives the film-pulling seat 21 to move to pull the packaging bag out from the bag-opening mechanism to near one side of the collection tank 1 to complete the laying of the packaging bag. The film-pulling length of the packaging bag is greater than the length of the shaft parts.

[0088] S42. Push the parts into the packaging bag: The stacked multiple shaft parts are pushed by the push plate 961 through the film-pulling frame 22 and into the packaging bag. During the pushing process, the support plate 31 located below the packaging bag gradually rises to support the parts. During this process, the support plate 31 only rises after the shaft parts move above the corresponding support plate 31.

[0089] S43. Clamp the packaging bag: After the shaft parts are completely placed in the packaging bag, start the film-cutting mechanism, so that the film-cutting mechanism melts one end of the pulled packaging bag near the bag-opening mechanism. Then the film-pulling mechanism 200 releases the clamping of the packaging bag, so that the packaging bag with parts is only supported by the support plate 31. Then use the three-dimensional space mover of the lifting mechanism 400 to drive the gripper 40 to move, so that the support plate 402 supports the packaging bag. Start the driver 1, so that the pressing plate 404 presses down on the parts. Because the pressing plate 404 and the support plate 402 clamp from the upper and lower sides of the parts, even if the parts are stacked, they will be pressed into a single row by the squeezing force between the pressing plate 404 and the support plate 402. Then the lifting mechanism 400 drives the clamped packaging bag with parts to rise to the height where the sealing mechanism 500 is located. Start the sealing mechanism 500, so that the sealing frame 51 of the sealing mechanism 500 moves directly above the support plate 31, and the end of the packaging bag falls between the upper sealing plate 52 and the lower sealing plate 53. The upper sealing plate expander 54 and the lower sealing plate expander 55 are started, driving the upper sealing plate 52 and the lower sealing plate 53 to act together on the packaging bag to complete the sealing of the end of the packaging bag.

[0090] S44. Transfer and stack the packaging bags: Use the three-dimensional space mover of the lifting mechanism 400 to drive the gripper 40 to transfer the sealed packaging bag to the conveying section 61 for stacking. When stacking, stack the part groups layer by layer. The stacked multiple part groups with packaging bags form a rectangular structure or a square structure. In this step, before stacking, adjust the distance between the first retaining roller and the second retaining roller, and place a cushion (such as a wooden board) with the same width as the distance between the two retaining rollers on the conveying section 61 to facilitate the stacking of the part groups on the cushion. When stacking, the parts in the upper and lower adjacent layers are only staggered by a distance equal to the radius of one part.

[0091] S45. Strapping: The stacked part groups are sent to the strapping machine 700 for strapping.

[0092] S46. Weighing: After the bundled part group is sent to the second conveying section 62, the lifting frame 81 rises, causing the two transfer conveying lines 82 to rise above the rollers of the second conveying section 62. The products originally on the rollers are simultaneously lifted by the two transfer conveying lines 82 and are sent to the weighing platform 83 along with the conveyance of the transfer conveying lines 82. After the products reach above the weighing platform 83, the elevator drives the two transfer conveying lines 82 to move downward, causing the products to fall onto the weighing platform 83 for weighing, thus completing the weighing of the products.

[0093] S47. Sending the packaging bag back to the second conveying section 62: The elevator is driven to cause the two transfer conveying lines 82 to rise. Further, the transfer conveying lines 82 lift the products on the weighing platform 83. The lifted products are sent to the second conveying section 62 under the reverse conveyance of the transfer conveying lines 82. When the products reach above the rollers of the second conveying section 62, the elevator is controlled to cause the transfer conveying lines 82 to descend below the top of the rollers. The products are lifted by the second conveying section 62 during the descent and continue to be conveyed along the roller conveying line.

[0094] In this embodiment, a fully automated process is realized from the quantitative feeding, pushing, packing, transferring, stacking, and weighing of shaft parts. Compared with the prior art, it can not only ensure the feeding accuracy before packaging and packing, but also achieve full automation during packing. Moreover, the bundling of each part group is cancelled during the packing process of shaft parts, thus saving the equipment cost, the process time-consuming cost of bundling, and the cost of bundling straps brought by bundling. This is not only beneficial to shortening the part packing duration and improving the process efficiency, but also beneficial to reducing the packing cost. In addition, since the parts in each part group are arranged in a row, and the parts in adjacent upper and lower layers are only staggered by a distance of one part radius, except for one part in each layer of part group that is supported by only one part on one side, the rest of the parts are supported by two parts on the left and right at the same time. It can be seen that all parts are basically fully supported, which also ensures that even when the stacking height is relatively high, the stacked body in the shape of a rectangle or a square can still be stably stacked. All in all, this embodiment takes into account the low cost of packing, the high efficiency of packing, and the stacking stability of packing.

[0095] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. The packing method of a shaft part packing line requires the use of a shaft part packing line. The shaft part packing line includes a feeding device, a material feeding device, and a packing device. The material feeding device is used to push the parts loaded on the feeding device to the packing device for packing. The feeding device includes an inclined frame, a limiting member, and a pushing mechanism. The limiting member protrudes from the inclined frame. The pushing mechanism includes a push plate that can be lifted and lowered. The push plate is provided with a guiding surface whose inclined direction is the same as that of the inclined frame. It is characterized in that: It also includes a limiting part, which is located above the inclined rack before the ejector plate ejects. The distance between the limiting part and the inclined rack only allows single-row parts to pass through; The limiting part is connected with a height adjustment mechanism. The height adjustment mechanism is installed on the inclined rack and is used to adjust the distance between the limiting part and the inclined rack; The packing device includes a film pulling mechanism, a supporting mechanism and a lifting mechanism installed on the rack. The film pulling mechanism is used to open and lay flat the packaging bag. The supporting mechanism includes at least two supporting plates. The lifting mechanism is arranged above the supporting plates. The lifting mechanism includes a three-dimensional space mover and a gripper. The gripper is installed at the output end of the three-dimensional mover. The gripper includes a supporting plate and a pressing plate. A driver for driving the pressing plate to lift is connected to the pressing plate. The pressing plate is located above the supporting plate; The packing device also includes a product conveyor line. The product conveyor line includes a first conveying section and a second conveying section. A bundling machine is arranged between the first conveying section and the second conveying section. Rotatable retaining rollers 1 and 2 are arranged on both sides of the first conveying section. The distance between the retaining rollers 1 and 2 can be adjusted; The packing device also includes a temporary storage mechanism. The temporary storage mechanism includes a lifting frame and two transfer conveyor lines. The transfer conveyor lines are installed on the lifting frame. The second conveying section is a roller conveyor line. The transfer conveyor lines are arranged between adjacent rollers of the second conveying section. The conveying direction of the transfer conveyor lines is perpendicular to the conveying direction of the second conveying section; It also includes the following packing steps: S1. Arranging parts in a single row: Multiple parts stacked on the inclined rack form a single-row arrangement after passing through the gap between the limiting part and the inclined rack; S2. Feeding parts: The ejector plate of the ejecting mechanism rises, so that the parts blocked by the limiting part are lifted to exceed the height of the limiting part, and the parts exceeding the height of the limiting part slide down along the guiding surface; S3. Pushing parts onto the packing device: When the ejecting mechanism ejects a set number of parts, the feeding device is started, so that the feeding device pushes the parts onto the packing device; S4. The packing device packs the parts.

2. The packing method of the shaft part packing line according to claim 1, characterized in that: The feeding device also includes a rotatable limiting disk. The number of limiting parts is multiple. Multiple limiting parts are all fixedly connected to the circumference of the limiting disk, and the included angles formed between adjacent limiting parts and the center of the limiting disk are different.

3. The packaging method of the shaft part packaging line according to claim 1, characterized in that: A separating protrusion is arranged at the end of the guiding surface of the ejector plate. The separating protrusion is located between the limiting part and the limiting member.

4. The packing method of the shaft part packing line according to claim 1, characterized in that: The number of the grippers is two, and the distance between the two grippers can be adjusted.

5. The packing method of the shaft part packing line according to claim 1, characterized in that: The packing device also includes a film unwinding mechanism, a bag opening mechanism, a film cutting mechanism and a sealing mechanism. The film unwinding mechanism is used to continuously unwind the packaging bag. The bag opening mechanism is used to open the bag mouth of the packaging bag. The film cutting mechanism is arranged between the bag opening mechanism and the film pulling mechanism. The film cutting mechanism is used to cut or fuse a packaging bag pulled out by the film pulling mechanism from the unwound packaging bag. The sealing mechanism is used to seal both ends of the packaging bag after the parts group has completed the bagging of the packaging bag.

6. The packing method of the shaft part packing line according to claim 5, characterized in that: The film pulling mechanism includes a film pulling seat, a film pulling starter and a film pulling frame. The film pulling seat is slidably connected to the slide rail provided on the rack. The film pulling frame is fixed to the film pulling seat. The film pulling starter is used to drive the film pulling frame to move along the slide rail.

7. The packing method of the shaft part packing line according to claim 1, characterized in that: It further includes transferring and stacking packaging bags. The three-dimensional mover of the lifting mechanism drives the gripper to transfer the packaged bags with sealed mouths to the first conveying section for stacking. When stacking, the part groups are stacked layer by layer, and the stacked multiple part groups with packaging bags form a rectangular or square structure.

8. The packing method of the shaft part packing line according to claim 7, characterized in that: Before stacking, adjust the distance between the first retaining roller and the second retaining roller, and place a cushion plate with the same width as the distance between the two retaining rollers on the first conveying section to facilitate the stacking of part groups on the cushion plate. When stacking, the parts in the adjacent upper and lower layers are staggered by only one part radius.

9. The packing method of the shaft part packing line according to claim 8, characterized in that: The stacked part groups are sent to a bundling machine for bundling. After the bundled part groups are sent to the second conveying section, the lifting frame rises, causing the two transfer and conveying lines to rise above the rollers of the second conveying section. The products originally located on the rollers are simultaneously lifted by the two transfer and conveying lines and sent to the weighing table along with the conveyance of the transfer and conveying lines. After the products reach above the weighing table, the elevator drives the two transfer and conveying lines to move downward, causing the products to fall onto the weighing table for weighing, thus completing the weighing of the products.

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