Packing method of a shaft part packing device

Abstract

The present invention relates to the technical field of intelligent equipment, and specifically discloses a packaging method for a shaft part packaging device, which includes a film pulling mechanism, a support mechanism and a product conveyor line. The film pulling mechanism is used to open and flatten the packaging bag. The support mechanism includes at least two support plates for supporting parts, and also includes a lifting mechanism arranged above the support plate. 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. The lifting mechanism can transfer the packaging bag on the support plate to the product conveyor line. This solution solves the problem of high cost existing in the packaging and stacking of existing shaft parts.

Description

[0001] This application is a divisional application of a patent application with an application date of May 27, 2022, an application number of 2022105932543, and an invention title of an axial part packing device and its packing method. Technical Field

[0002] The present invention relates to the technical field of intelligent equipment, and specifically relates to a packing method for an axial part packing device. Background Art

[0003] In the packing of axial parts, especially for long axial parts such as copper pipes and steel pipes, when 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 part groups are packaged, the part groups still need to be stacked for subsequent storage or transportation. It is very difficult to ensure the regularity after stacking for part groups with different bundling effects, which results in a small number of parts that can be stacked in a fixed space. At the same time, it is not conducive to the stability during transportation.

[0004] To solve the above problems, the packaged part groups are improved in the prior art, so that the cross-section of the bundled part group is a regular polygon structure, such as the most common regular hexagon structure. Although this method can make the part groups stack neatly, when bundling and packing the regular hexagon part groups, a special packing rack is needed to form multiple parts into a regular hexagon structure, then the part group in the hexagon structure is bundled, and then the bundled part group is sent into the packaging bag that is opened and laid flat by the film pulling mechanism through the pushing mechanism to achieve bagging. After the bagging is completed, the end of the packaging bag is sealed by the sealing mechanism. And for the sake of the stability during transportation or storage, multiple part groups are stacked neatly and then bundled into a large bundle again. However, due to the structural limitation of the regular hexagon part group at this time, if for the purpose of achieving rapid stacking, 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 part group, there are diamond-shaped gaps between adjacent part groups after stacking. On the one hand, it leads to non-compact stacking. 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; and if for the purpose of ensuring 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 part groups in a stacked manner, the parts need to be accurately placed into the dovetail sinking grooves formed between the part groups, which increases the difficulty of putting the part groups in, that is, increases the cost of stacking. Summary of the Invention

[0005] The present invention aims to provide a packaging device for shaft parts to solve the problem of high cost existing in the packaging and stacking of existing shaft parts.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A packaging device for shaft parts includes a film pulling mechanism, a support mechanism and a product conveyor line. The film pulling mechanism is used to open and lay flat a packaging bag. The support mechanism includes at least two support plates for supporting parts, and further includes a lifting mechanism 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 space 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. The lifting mechanism can transfer the packaging bag on the support plate to the product conveyor line.

[0008] The principle and advantages of this solution are as follows: In actual application, when packing shaft parts, first use the film pulling mechanism to open and lay flat the packaging bag above the support plate. Then, push multiple parts that need to be packed into a part group into the packaging bag laid flat and opened by the film pulling mechanism. The parts entering the packaging bag are supported by multiple support plates of the support mechanism. Then, use the pallet of the lifting mechanism to lift 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 mechanism transfers the parts, there will be no relative position movement between adjacent parts. After the lifting mechanism places the packaging bag with parts on the product conveyor line, the single-row arrangement position between adjacent parts remains basically unchanged. When the lifting mechanism clamps and stacks the part groups, since each part group is arranged in a 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, ensure that the number of part groups in each layer is 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, process time-consuming cost, and cost of the bundling tape brought by bundling because it cancels the bundling of each part group, which is beneficial to shortening the part packing time and improving the process efficiency, and is also beneficial to reducing the packing cost. In addition, since the parts in each part group are arranged in a row, and the parts between adjacent upper and lower 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 only supported by 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 almost all parts are supported, which also ensures that even if the stacking height is relatively high, the stacked body in the shape of a rectangle or square can still be stably stacked. That is, this solution takes into account the low cost, high efficiency, and stacking stability of packing.

[0009] Preferably, as an improvement, elastic blocks are provided on the upper surface of the pallet and / or the lower surface of the pressing plate.

[0010] Beneficial effects: By providing elastic blocks on the upper surface of the pallet and / or the lower surface of the pressing plate in this solution, when the pressing plate and the pallet clamp the parts, the elastic blocks can increase the contact area with the parts under elastic deformation, ensuring that the shaft parts are not damaged while being clamped.

[0011] Preferably, as an improvement, a height adjusting member is connected between the output end of the driver and the pressing plate, and the height adjusting member is used to adjust the distance between the pressing plate and the supporting plate.

[0012] Beneficial effects: In actual use, there are various specifications of parts. For example, various parts with different outer diameters all need to be clamped by this clamping mechanism. When the outer diameters of the parts are different, the position of the height adjusting member needs to be adjusted to adjust the minimum distance between the pressing plate and the supporting plate, so as to ensure that parts with different outer diameters can be clamped by the lifting mechanism of this solution without adjusting the stroke of the driver, improving the practicability of this solution.

[0013] Preferably, as an improvement, the three-dimensional space mover includes a first linear module, two second linear modules and two lifting modules. The first linear module includes two mutually parallel module bodies. An installation frame is fixedly connected between the output ends of the two module bodies. Each lifting module is connected to an installation frame by a second module. The strokes of the output ends of the first module, the second module and the lifting module are perpendicular to each other in pairs. The output end of each lifting module is connected to a gripper.

[0014] Beneficial effects: When adopting this solution, the movement of the same installation frame is driven by two mutually parallel module bodies, making the movement of the installation frame more stable and avoiding the problem of the installation frame being distorted and deformed due to the active movement only on one side. The number of the lifting modules, the second linear modules and the grippers is two each, so that the shaft parts can be clamped by the two grippers at the same time, ensuring 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, and ensuring the stable clamping and transfer of different shaft parts.

[0015] Preferably, as an improvement, a width limiting mechanism is further included and is arranged on the product conveyor line. The width limiting mechanism includes a first block and a second block. The first block and the second block are located on both sides of the product conveyor line, and the distance between the first block and the second block can be adjusted.

[0016] Beneficial effects: With the arrangement of the first block and the second block in this solution, when multiple part groups are stacked, the stacked part groups are restricted between the first block and the second block, and the stacking width is limited by the first block and the second block, 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.

[0017] In addition, the distance between the first block and the second block can be adjusted, so as to be conveniently adjusted adaptively according to different stacking width requirements, improving the practicability of this solution.

[0018] Preferably, as an improvement, the product conveyor line is a roller conveyor line. The roller conveyor line includes a support frame and a plurality of rollers. Both the first stop block and the second stop block are arranged between adjacent rollers. The first stop block and the second stop block are vertically arranged and can rotate by themselves. The width limiting mechanism further includes a regulator installed on the support frame. The regulator includes a bidirectional lead screw that can rotate. Adjusting seats are respectively installed on the two threaded sections of the bidirectional lead screw. The adjusting seats are slidably connected to the support frame. The first stop block is installed on one of the adjusting seats, and the second stop block is installed on the other adjusting seat.

[0019] Beneficial effects: In this solution, by installing a regulator with a bidirectional lead screw on the support frame of the product conveyor line, while facilitating the adjustment of the distance between the first stop block and the second stop block, the height space of the support frame for supporting the product conveyor line can be utilized. The first stop block and the second stop block that can rotate by themselves are arranged between adjacent rollers. On the one hand, the idle position between adjacent rollers is utilized. On the other hand, when the stacked part groups move along the roller conveyor line, since the first stop block and the second stop block will not only not hinder the movement of the part groups, but also ensure the stable movement of multiple part groups along the roller conveyor line before being uniformly bundled.

[0020] Preferably, as an improvement, the product conveyor line includes a first conveying section and a second conveying section, and a bundling machine is arranged between the first conveying section and the second conveying section.

[0021] Beneficial effects: In this solution, by arranging a bundling machine between the first conveying section and the second conveying section, the stacked part groups can be bundled and packed when they reach the bundling machine. Compared with the prior art where each part group needs to be bundled and packed first, this solution only needs to uniformly bundle and pack multiple stacked part groups at one time. The bundling and packing process is greatly shortened, and the material usage of the bundling straps is also greatly reduced, significantly reducing the cost.

[0022] In addition, when bundling and packing, the first conveying section and the second conveying section can support the stacked part groups, ensuring that the part groups will not become loose during the packing process.

[0023] Preferably, as an improvement, it further 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 transfer conveyor lines are arranged between adjacent rollers of the roller conveyor line. The conveying direction of the transfer conveyor lines is perpendicular to the conveying direction of the roller conveyor line. A weighing platform is arranged between the two transfer conveyor lines.

[0024] Beneficial effects: In actual product production, most product packaging lines do not have a separate weighing process. When it is necessary to check the weight of the products, the weighing process has to be set up separately. For example, multiple parts groups that have been bundled and packed are borrowed from other equipment and transferred to a weighing platform for weighing. After weighing, they are sent back to the product conveyor line for subsequent processes (such as scanning and warehousing). However, there are problems in transferring the bundled parts groups. For example, for large-sized and heavy shaft parts (the length, width, and height after stacking are approximately 6m * 0.6m * 0.5m, and the weight is about 1 ton), a forklift or a crane is required for transfer, and a large platform scale is also needed for weighing, and the transfer process is time-consuming and laborious. In this solution, only by raising the lifting frame for the bundled parts groups that need to be temporarily transferred or weighed, and using the transfer conveyor line to lift and transfer the parts groups on the product conveyor line (i.e., the roller conveyor line), the transfer of the parts groups from the roller conveyor line can be achieved. When weighing is required, the lifting frame can also be lowered to make the parts groups on the transfer conveyor line fall onto the weighing platform. After weighing, the lifting frame is raised again, and the parts groups are lifted and sent to the roller conveyor line through the transfer conveyor line. The whole process does not require a forklift or a crane to be set up, and the transfer operation is simple and convenient.

[0025] Preferably, as an improvement, the support mechanism further includes a lifter and a pipe gathering device. The lifter is used to drive the support plate and the pipe gathering device to lift and lower. The pipe gathering device includes two pushing plates, and the two pushing plates can move closer to each other or away from each other. When the pushing plates move closer to each other, the multiple parts are moved closer to each other.

[0026] Beneficial effects: When this solution is adopted, the pushing plates are used to move the parts in the packaging bag closer to the middle, ensuring that when the clamp holds the parts, the parts can be pressed by the pressing plate. After the parts are pressed, all the parts are arranged in a single row and the adjacent parts are closely attached to each other, ensuring the neat stacking of the packaging bags with parts in the subsequent process.

[0027] The packing method using the shaft parts packing device includes the following packing steps:

[0028] S1. Open and pull out the packaging bag: Use the film pulling mechanism to open and lay flat the packaging bag.

[0029] S2. Push the parts into the packaging bag: Push the parts into the opened packaging bag. During the pushing process, the support plate located below the packaging bag forms a support for the parts.

[0030] S3. Clamp the packaging bag: Use the three-dimensional space mover of the lifting mechanism to drive the clamp to move, so that the support plate supports the packaging bag. Then start the driver to make the pressing plate press the parts into a single row and clamp the packaging bag with parts together with the support plate.

[0031] S4. Transfer and stack the packaging bags: Use the three-dimensional mover of the lifting mechanism to drive the gripper to transfer the packaging bags to the product conveyor line for stacking. When stacking, stack the part groups layer by layer. The stacked part groups with packaging bags form a rectangular or square structure.

[0032] Beneficial effects: Through this method, when packing and stacking shaft parts, there is no need to separately bundle each part group in a polygon, which simplifies the process and realizes staff reduction and efficiency improvement. Description of the Drawings

[0033] Figure 1 Schematic diagram of the first method for packing and stacking shaft parts in the prior art;

[0034] Figure 2 Schematic diagram of the second method for packing and stacking shaft parts in the prior art;

[0035] Figure 3 Three-dimensional structure diagram of the embodiment of the present invention;

[0036] Figure 4 For Figure 3 Enlarged schematic diagram of part A in

[0037] Figure 5 Schematic diagram of the stacking method during stacking in the embodiment of the present invention;

[0038] Figure 6 Three-dimensional structure diagram of the lifting mechanism in the embodiment of the present invention;

[0039] Figure 7 For Figure 6 Enlarged schematic diagram of part B in

[0040] Figure 8 For Figure 6 Three-dimensional structure diagram of the gripper in

[0041] Figure 9 For Figure 8 Front view of

[0042] Figure 10 Schematic diagram of the connection relationship between the temporary storage mechanism and the second conveying section of the roller conveyor line in the embodiment of the present invention;

[0043] Figure 11 For Figure 10 Structural diagram of the elevator and the lifting frame in Specific Embodiments

[0044] The following is a further detailed description through specific embodiments:

[0045] The reference numerals in the accompanying drawings of the specification include: 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 conveyor line 600, conveying section one 61, conveying section two 62, stop block one 63, stop block two 64, adjusting seat 65, bundling machine 700, temporary storage mechanism 800, lifting frame 81, load-bearing beam 811, connecting beam 812, transfer conveyor line 82, weighing platform 83, supporting plate 84.

[0046] The embodiment is basically as shown in the attached Figures 3 to 11 drawings. In combination with Figures 3 to 5 , an axial part packing device includes a pushing mechanism, an unwinding 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 conveyor line 600. The pushing mechanism, the unwinding 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 machine frame. The pushing mechanism is used to push the parts onto the supporting mechanism 300. The unwinding mechanism 100 is used to continuously unwind the packaging bags. The bag opening mechanism is used to open the bag mouth of the packaging bag. The film pulling mechanism 200 is used to pull out the packaging bag from 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 realize the flat laying of the packaging bag). The pulling length of the packaging bag is greater than the length of the axial parts. The supporting mechanism 300 is used to support multiple parts sent into the packaging bag by the pushing mechanism (multiple parts are placed in the same packaging bag to form a part group). The lifting mechanism 400 is used to clamp the part group with the packaging bag sleeved and drive the part 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 fuse a packaging bag pulled out by the film pulling mechanism 200 from the unwound packaging bags. The film cutting mechanism is not shown in the accompanying drawings of this embodiment. The sealing mechanism 500 is used to seal both ends of the packaging bag after the part group has completed the packaging bag sleeving.

[0047] Specifically, the pushing mechanism can adopt a pusher and a pushing plate. The pusher is used to drive the pushing plate to move horizontally. Specifically, the pusher can adopt a cylinder, a linear module, etc. The structure diagram of the pushing mechanism is not disclosed in this embodiment. The pusher is installed on the machine frame. The pushing plate can push multiple parts to be packed placed on the machine frame or placed in a certain cavity onto the packaging bag pulled out by the film pulling mechanism 200.

[0048] Specifically, the unwinding mechanism 100 uses an unwinding roller. The bag opening mechanism can use the bag opening device 500 in Chinese Patent Publication No. CN203544409U, or other bag opening structures in the prior art.

[0049] Combined with Figure 3 and Figure 4 , the film pulling mechanism 200 includes a film pulling seat 21, a film pulling starter, and a film pulling frame 22. The film pulling seat 21 is slidably connected to a slide rail provided on the frame. The film pulling frame 22 is fixed to the film pulling seat 21. The moving direction of the film pulling frame 22 is parallel to the moving direction of the pushing plate. The film pulling frame 22 is located between the pushing plate and the bag opening mechanism. The film pulling starter is used to drive the film pulling frame 22 to move along the slide rail. The film pulling 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 meshes with the first rack 23. The starting motor 24 is fixed to the film pulling seat 21. The first gear is fixed to 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 pulling seat 21 also moves synchronously, thereby promoting the movement of the film pulling frame 22. The film pulling frame 22 moves the packaging bag from one side of the bag opening mechanism towards the pushing mechanism to achieve the flattening of the packaging bag after film pulling. The film pulling frame 22 can use the square sleeve body equipped with a bag clamping mechanism in Chinese Patent Publication No. CN205440946U.

[0050] The support mechanism 300 includes a lifter, a pipe gathering device (not shown in the figure), and at least two support plates 31 for supporting parts. The lifter is used to drive the support plates 31 and the pipe gathering device to lift and lower. The pipe gathering device is arranged on one side of the support plate 31 closest to the pushing mechanism. The pipe gathering device is located between the pushing mechanism and the leftmost support plate 31. The pipe gathering device and each support plate 31 have their own lifters. The lifters use cylinders fixed to the frame. The setting of multiple separate lifters facilitates the separate control of the pipe gathering device and the multiple support plates 31. The middle of the support plate 31 is low and both ends are high. The pipe gathering device includes two pushing and gathering plates. The two pushing and gathering plates can approach or move away from each other. When the pushing and gathering plates approach, they gather multiple parts together. The pipe gathering device can use the pipe clamping mechanism in Chinese Patent Publication No. CN203544409U. The pipe clamping claws in this patent are equivalent to the pushing and gathering plates in this embodiment. The pipe gathering device enables the parts to be gathered towards the middle by the pipe gathering device immediately after the parts are just inserted into the packaging bag.

[0051] Combined with Figures 6 to 9, the lifting mechanism 400 is arranged above the support plate 31. The lifting mechanism 400 includes a fixed frame 4, a three-dimensional space mover, and two grippers 40. The fixed frame 4 is fixed on the ground. The three-dimensional space mover is installed on the fixed frame 4. The support mechanism 300 and the film pulling mechanism 200 are both located below the fixed 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. Specifically, the three-dimensional space mover includes a first linear module 41 installed on the fixed frame 4. 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 a 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 fixed 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. 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).

[0052] 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 drive 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 drive motor 43 is fixed on the moving frame 44. The second gear is fixedly connected to the output end of the drive motor 43. The second gear meshes with the second rack 45. The drive 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.

[0053] A lifting module 46 is fixed on each moving frame 44. The output end of each lifting module 46 is fixedly connected to a gripper 40. The lifting module 46 is used to drive the gripper 40 to move vertically (i.e., Z-axis movement).

[0054] The gripper 40 includes a connecting frame 401 installed at the output end of the lifting module 46. A driver one and a driver two are fixed on the connecting frame 401. The driver one is a vertically arranged cylinder, and the driver two is a horizontally arranged linear module.

[0055] The output end of the second driver (i.e., on the slider of the linear module) is fixedly connected with a supporting plate 402. The second driver is used to drive the supporting plate 402 to move away from or close to the shaft-like part. In this embodiment, the supporting plate 402 is U-shaped, so that the supporting 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 (when the shaft-like part is located above the supporting plate 402, the three-dimensional space mover drives the gripper 40 to move upward, and then the supporting plate 402 supports the shaft-like part).

[0056] 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 supporting plate 402. The number of the 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 supporting plate 402, and the pressing plate 404 and the supporting plate 402 cooperate to clamp the part from the upper and lower sides of the shaft-like part.

[0057] 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.

[0058] Elastic blocks are provided on the upper surface of the supporting 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 supporting plate 402 clamp the part, the elastic blocks can increase the contact area with the part under elastic deformation, ensuring that the shaft-like part is not clamped and damaged when clamping the part.

[0059] Combined Figure 3 and Figure 4 , the number of the sealing mechanisms 500 is 2. 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 machine 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 provided on the machine 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 is used to drive 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 heat sealing and forming of the port of the packaging bag.

[0060] CombinedFigure 3 , Figure 10 and Figure 11 , the product conveyor line 600 adopts a powered roller conveyor line. The roller conveyor line includes a support frame and a plurality of rollers. A width limiting mechanism is also installed on the support frame. The width limiting mechanism includes a regulator, a first stop block 63 and a second stop block 64. The first stop block 63 and the second stop block 64 are located on both sides of the product conveyor line 600. 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 an adjusting seat 65. The first stop block 63 is rotatably connected to one adjusting seat 65, and the second stop block 64 is rotatably connected to the other adjusting seat 65. The first stop block 63 and the second stop block 64 are vertically arranged. The first stop block 63 and the second stop block 64 are both arranged between adjacent rollers. The first stop block 63 and the second stop block 64 are both rotating rollers that can rotate by themselves. The adjusting seat 65 is located below the roller.

[0061] The roller conveyor line includes a first conveying section 61 and a second conveying section 62. A bundling machine 700 is arranged between the first conveying section 61 and the second conveying section 62. The second conveying section 62 is located on one side of the output end of the first conveying section 61. A temporary storage mechanism 800 is arranged above the second conveying section 62.

[0062] 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.

[0063] Specifically, the driving mechanism of the lifting frame 81 is a four-column lead screw linkage elevator, such as a bevel gear lead screw elevator of the brand Newcard. The elevator is installed on the ground.

[0064] 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. The load-bearing beams 811 are parallel to the rollers. The transfer conveyor line 82 is installed on the load-bearing beams 811. The connecting beams 812 are located between the two load-bearing beams 811. The space enclosed by two of the connecting beams 812 and the two load-bearing beams 811 is used to place the weighing platform 83.

[0065] 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. The output shaft of the motor is in transmission connection with the input shaft through bevel gears.

[0066] The packing method using the above shaft part packing device is as follows:

[0067] S1. Open the packaging bag and pull it out: The unwinding mechanism 100 unwinds the packaging bag. The opened packaging bag is expanded 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. Next, the film-pulling starter drives the film-pulling seat 21 and the film-pulling frame 22 to move to pull the packaging bag from the bag-opening mechanism to the side close to the pushing mechanism to complete the laying of the packaging bag. The film-pulling length of the packaging bag is greater than the length of the shaft-like part.

[0068] S2. Push the part into the packaging bag: Use the pushing mechanism to push the part into the packaging bag expanded by the film-pulling frame 22. During the pushing process, the pushed part first passes above the pipe-gathering device. The pipe-gathering device starts and then gathers the parts towards the middle. The part continues to be pushed into the packaging bag by the pushing mechanism. The support plate 31 located below the packaging bag gradually rises to support the part. In this process, the support plate 31 only rises after the shaft-like part moves above the corresponding support plate 31.

[0069] S3. Clamp the packaging bag: After the shaft-like part is completely placed in the packaging bag, start the film-cutting mechanism to make the film-cutting mechanism fuse one end of the pulled-out packaging bag close to the bag-opening mechanism. Then, the film-pulling mechanism 200 releases the clamping of the packaging bag, so that the packaging bag with the part is only supported by the support plate 31. Next, 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. Then, start the first driver to make the pressing plate 404 press down on the part. Because the pressing plate 404 and the support plate 402 clamp from the upper and lower sides of the part, even if the parts are stacked, they will be pressed into a single-row arrangement 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 the part to rise to the height where the sealing mechanism 500 is located. Start the sealing mechanism 500 to make the sealing frame 51 of the sealing mechanism 500 move directly above the support plate 31 and make the end of the packaging bag fall between the upper sealing plate 52 and the lower sealing plate 53. The upper sealing plate telescopic device 54 and the lower sealing plate telescopic device 55 start to drive 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.

[0070] S4. 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 first 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 stop block 63 and the second stop block 64, and place a cushion (such as a wooden board) with the same width as the distance between the two stop blocks on the first conveying section 61 to facilitate the stacking of the part groups on the cushion. When stacking, the parts in the adjacent upper and lower layers are only staggered by a distance equal to the radius of one part.

[0071] S5. Strapping: The stacked part groups are sent to a strapping machine 700 for strapping.

[0072] S6. Weighing: After the strapped part groups are 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 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.

[0073] S7. Sending the packaging bag back to the second conveying section 62: The elevator drives the two transfer conveying lines 82 to rise, and then 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 make the transfer conveying lines 82 drop 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.

[0074] This embodiment realizes the pushing, packing, transferring, stacking and weighing of parts, achieving the full-automatic packing of shaft parts. Compared with the prior art, this embodiment cancels the strapping of each part group, thus saving the equipment cost, process time-consuming cost and strapping belt cost brought by strapping. It is not only beneficial to shorten the part packing time and improve the process efficiency, but also beneficial to reduce the packing cost. In addition, since the parts in each part group are arranged in a line, and the parts between the upper and lower adjacent layers are only staggered by a distance equal to the radius of one part, except for one part in each layer of part groups 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 almost all the parts are 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, high efficiency and stacking stability of packing.

[0075] The above are only 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 noted 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, and these should also be regarded as the protection scope of the present invention, which 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. Packing method of a shaft part packing device, wherein the shaft part packing device includes a film pulling mechanism, a support mechanism and a product conveyor line. The film pulling mechanism is used to open and lay flat the packaging bag. The support mechanism includes at least two support plates for supporting parts, and is characterized in that: It further includes a lifting mechanism arranged above the support plate. The lifting mechanism includes a three-dimensional space mover and a gripper. The gripper is installed at the output end of the three-dimensional space 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. The lifting mechanism can transfer the packaging bags on the support plate to the product conveyor line. It further includes a width limiting mechanism arranged on the product conveyor line. The width limiting mechanism includes a first stop block and a second stop block. The first stop block and the second stop block are located on both sides of the product conveyor line. The distance between the first stop block and the second stop block can be adjusted. The product conveyor line is a roller conveyor line. The roller conveyor line includes a support frame and a plurality of rollers. The first stop block and the second stop block are both arranged between adjacent rollers. The first stop block and the second stop block are vertically arranged and can rotate by themselves. The width limiting mechanism further includes a regulator installed on the support frame. The regulator includes a bidirectional lead screw that can rotate. Adjusting seats are respectively installed on the two threaded sections of the bidirectional lead screw. The adjusting seats are slidably connected to the support frame. The first stop block is installed on one of the adjusting seats, and the second stop block is installed on the other adjusting seat. 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. It further 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 transfer conveyor lines are arranged between adjacent rollers of the roller conveyor line. The conveying direction of the transfer conveyor lines is perpendicular to the conveying direction of the roller conveyor line. A weighing platform is arranged between the two transfer conveyor lines. The support mechanism further includes a lifter and a pipe gathering device. The lifter is used to drive the support plate and the pipe gathering device to lift. The pipe gathering device includes two pushing plates. The two pushing plates can approach each other or move away from each other. When the pushing plates approach each other, multiple parts are brought closer to each other. It further includes the following packing steps: S1. Open and pull out the packaging bag: Use the film pulling mechanism to open and lay flat the packaging bag. S2. Push the parts into the packaging bag: Push the parts into the opened packaging bag. During the pushing process, the support plate located below the packaging bag forms a support for the parts. S3. Clamp the packaging bag: Use the three-dimensional space mover of the lifting mechanism to drive the gripper to move, so that the support plate supports the packaging bag. Then start the driver, so that the pressing plate presses the parts into a single row and clamps the packaging bag with the parts together with the support plate. S4. Transfer and stack the packaging bags: Use the three-dimensional space mover of the lifting mechanism to drive the gripper to transfer the packaging bags to the product conveyor line 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 stop block and the second stop block, and place a cushion plate with the same width as the distance between the two stop blocks on the first conveying section.

2. The packaging method of the shaft part packaging device according to claim 1, characterized in that: Elastic blocks are arranged on the upper surface of the support plate and / or the lower surface of the pressing plate.

3. The packing method of the shaft part packing device according to claim 2, characterized in that: A height adjusting member is connected between the output end of the driver and the pressing plate. The height adjusting member is used to adjust the distance between the pressing plate and the support plate.

4. The packaging method of the shaft part packaging device according to claim 1, characterized in that: The three-dimensional space mover includes a first linear module, two second linear modules, and two lifting modules. The first linear module includes two mutually parallel module bodies. An installation frame is fixedly connected between the output ends of the two module bodies. A second module is connected between each lifting module and the installation frame. The strokes of the output ends of the first module, the second module, and the lifting module are perpendicular to each other pairwise. The output end of each lifting module is connected to a gripper.

5. The packaging method of the shaft part packaging device according to any one of claims 1-4, characterized in that: Before stacking in step S4, the parts in the upper and lower adjacent layers are only staggered by a distance equal to the radius of one part.

6. The packing method of the shaft part packing device according to claim 1, characterized in that: The stacked part group is sent to a bundling machine for bundling.

7. The packaging method of the shaft part packaging device according to claim 6, characterized in that: After the bundled part group is sent to the second conveying section, the lifting frame rises, causing the two transfer 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 conveying lines and are sent to the weighing platform along with the conveyance of the transfer conveying lines. After the products reach above the weighing platform, the elevator drives the two transfer conveying lines to move downward, causing the products to fall onto the weighing platform for weighing, thus completing the weighing of the products.

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