Palletizer, method of operation thereof and production line

Abstract

The application provides a palletizer, a working method thereof and a production line. The palletizer comprises a fixed frame, a moving frame, a bottom supporting bracket and a swing assembly. The fixed frame is internally provided with a product stacking position and a product lifting position. The fixed frame is provided with a pushing piece. The moving frame is slidingly connected with the fixed frame in the vertical direction. The bottom supporting bracket is rotationally connected with the moving frame. The bottom supporting bracket is provided with a product placing position above. The bottom supporting bracket is provided with a bottom opening below. The bottom supporting bracket can rotate around a first rotation axis between a closing position for closing the bottom opening and an opening position for opening the bottom opening. The swing assembly is rotationally connected with the moving frame. In the initial state, the swing assembly is limitingly connected with the bottom supporting bracket, and the bottom supporting bracket is kept in the closing position. With the moving frame moving upward relative to the fixed frame along the vertical direction, the pushing piece applies a force to the top of the swing assembly, forcing the swing assembly to rotate. The swing assembly applies a force to the bottom supporting bracket, releasing the limitation between the swing assembly and the bottom supporting bracket, and the bottom supporting bracket rotates around the first rotation axis to the opening position. The palletizer can realize multi-layer box palletizing, has a simple structure, low cost and small floor space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of palletizing devices, in particular to a palletizing machine, a working method thereof and a production line. BACKGROUND

[0002] The empty box palletizing operation is usually realized by manual method in production site, but with the development of productivity and the increase of labor cost, automatic palletizing operation is imminent. The existing solutions in the industry are mostly gantry palletizing machines, which control the mechanical arm to carry the box at the specified position on the slide rail by servo motor, so as to achieve the purpose of palletizing. However, the existing palletizing machines mostly realize the palletizing function by mechanical arm, which is rarely applied to the high labor proportion flow line due to the high cost, high maintenance cost, large floor space and other factors.

[0003] The existing palletizing machine also has the following defects: first, the machining precision of each part of the palletizing machine mechanical arm is high, and the control system is complex, which leads to high cost of the palletizing machine; second, the maintenance cost of the palletizing machine mechanical arm is high, and the on-site maintenance and debugging of electrical engineers are needed; third, a certain safety area needs to be planned around the palletizing machine to avoid injuring employees when the palletizing machine mechanical arm is working; fourth, due to the large size of the palletizing machine and the need to reserve a certain safety distance, the logistics path needs to be re-planned. SUMMARY

[0004] The first object of the present application is to provide a palletizing machine which realizes multi-layer box palletizing, has simple structure, low cost and small floor space.

[0005] The second object of the present application is to provide a production line using the above palletizing machine.

[0006] The third object of the present application is to provide a working method of the above palletizing machine.

[0007] To achieve the above first object, the present application provides a palletizer, comprising: a fixed frame, a product stacking position and a product lifting position are arranged in the fixed frame, the product lifting position is located above the product stacking position, and a pushing piece is arranged on the fixed frame; a movable frame, the movable frame is slidably connected with the fixed frame in the vertical direction; a bottom supporting bracket, the bottom supporting bracket is rotationally connected with the movable frame, a product placing position is formed above the bottom supporting bracket, a bottom opening is arranged below the product placing position, and the bottom supporting bracket can rotate about a first rotation axis between a closing position for closing the bottom opening and an opening position for opening the bottom opening; a swing assembly, the swing assembly is rotationally connected with the movable frame; in an initial state, the swing assembly is limitedly connected with the bottom supporting bracket, and the bottom supporting bracket is kept in the closing position; along with the movable frame moving upward relative to the fixed frame in the vertical direction, the pushing piece applies a force to the top of the swing assembly, forcing the swing assembly to rotate, and the swing assembly applies a force to the bottom supporting bracket, releasing the limitation between the swing assembly and the bottom supporting bracket, and the bottom supporting bracket rotates about the first rotation axis to the opening position.

[0008] As can be seen from the above scheme, when the product needs to be stacked, the palletizer works, in an initial state, the swing assembly is limitedly connected with the bottom supporting bracket, and the bottom supporting bracket is kept in the closing position, the first carton or other stacked product is kept in the product placing position, and along with the movable frame moving upward to the product lifting position, at the same time, the second stacked product enters the product stacking position along with the production line, then the pushing piece applies a force to the top of the swing assembly, so that the swing assembly rotates, then the swing assembly applies a force to the bottom supporting bracket, releasing the limitation between the swing assembly and the bottom supporting bracket, and the bottom supporting bracket rotates about the first rotation axis to the opening position, the first stacked product falls into the second stacked product under the action of its own gravity, and the above process is repeated to realize the stacking of multiple products.

[0009] Since the palletizer only needs to cooperate with the mechanical structure to realize the stacking of the product, without the need for a complex control system and a high-precision mechanical arm, the structure is simple and the cost is low, at the same time, the palletizer has a small size and occupies a small space, and can be directly arranged above the production line without affecting the original production path. In addition, the palletizer uses single power to trigger and reset the bottom supporting bracket, improving the power utilization rate.

[0010] A preferred scheme is that the pushing piece comprises a guide inclined rail, the guide inclined rail gradually moves away from the center line of the fixed frame from the bottom end to the top end; and the swing assembly comprises a sliding part, the sliding part is slidably connected with the guide inclined rail.

[0011] As can be seen, through the sliding connection between the sliding part and the guide inclined rail, the swing of the swing assembly can be realized, and driving force is provided for the movement of the bottom supporting bracket to the opening position.

[0012] Further, the swing assembly comprises a guide wheel assembly and a limiting assembly; the guide wheel assembly comprises a rotating part, a guide support rod and a guide wheel, the rotating part is rotatably installed on the moving frame, the second rotating axis of the rotating part is parallel to the first rotating axis, the rotating part is arranged at the middle part of the guide support rod, the guide wheel is arranged at the top end of the guide support rod, the sliding part is arranged on the guide wheel, and a force applying part is further arranged on the guide support rod and located at the side of the rotating part away from the guide wheel; in the initial state, the limiting assembly abuts against the bottom supporting bracket for limiting; the force applying part can drive the limiting assembly to move to a position away from the bottom supporting bracket.

[0013] Therefore, the arrangement of the guide wheel can reduce the friction between the guide wheel assembly and the guide ramp, and thus the components of the whole palletizer can move more smoothly. In addition, when the guide wheel is subjected to the force of the guide ramp, the end of the guide wheel assembly provided with the guide wheel moves along the extension direction of the guide ramp and swings by a certain angle around the second rotating axis. In this process, the force applying part on the guide support rod pushes the limiting assembly to move to a position away from the bottom supporting bracket, and the bottom supporting bracket can rotate around the first rotating axis to the open position under the action of its own gravity.

[0014] Further, the first rotating axis extends along the first horizontal direction; the limiting assembly comprises a limiting connecting part, a force receiving part and a limiting part, the limiting connecting part is slidably connected with the fixed frame in the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, in the initial state, the force receiving part is limitedly matched with the force applying part in the second horizontal direction, and the limiting part abuts against the bottom supporting bracket.

[0015] Therefore, in the initial state, the force receiving part is limitedly matched with the force applying part in the second horizontal direction, and the limiting part abuts against the bottom supporting bracket, so that the bottom supporting bracket is kept in the closed position. When the moving frame drives the guide wheel assembly and the limiting assembly to move upward, the guide wheel assembly is subjected to the force of the guide ramp, the force applying part applies a force to the force receiving part of the limiting assembly, forcing the limiting assembly to move along the second horizontal direction towards the center line side of the fixed frame, so that the limiting part is separated from the bottom supporting bracket.

[0016] A preferred scheme is that the bottom supporting bracket comprises a bottom supporting part, a first support rod, a bottom supporting connecting part, a second support rod and a bottom supporting roller; the bottom supporting connecting part is rotatably installed on the moving frame, the extension direction of the bottom supporting part is parallel to the first rotating axis, the first support rod and the second support rod are arranged at an angle and are both connected with the bottom supporting connecting part, the plane where the first support rod and the second support rod are located is arranged at an angle with the first rotating axis, the bottom supporting part is arranged at the end of the first support rod away from the bottom supporting connecting part, the bottom supporting roller is arranged at the end of the second support rod away from the bottom supporting connecting part, and the axis of the bottom supporting roller is parallel to the first rotating axis.

[0017] Therefore, by arranging the bottom supporting part and the bottom supporting roller on the first supporting rod and the second supporting rod respectively, the bottom supporting frame can rotate around the first rotation axis under the action of gravity.

[0018] Further, the stacker further comprises a reset assembly, the reset assembly is arranged close to the product stacking position, and the reset assembly drives the bottom supporting frame to move from the open position to the closed position.

[0019] Therefore, the reset assembly can reset the bottom supporting frame to the closed position when the bottom supporting frame is lowered to the product stacking position, thereby lifting the stacked products on the lower product stacking position.

[0020] Further, the reset assembly comprises a reset supporting member and a reset roller, the reset roller is arranged on the top of the reset supporting member, and the reset roller can drive the bottom supporting part to rotate around the first rotation axis.

[0021] Therefore, the arrangement of the reset roller can reduce the friction between the reset assembly and the bottom supporting frame during the rotation of the bottom supporting frame, thereby improving the service life of the stacker.

[0022] Further, the number of reset assemblies is two or more, and the plurality of reset assemblies are arranged along the extension direction of the bottom supporting part.

[0023] Therefore, the plurality of reset assemblies can ensure the stability of the rotation of the bottom supporting frame, and can also stably support the bottom supporting frame.

[0024] One preferred embodiment is that the number of bottom supporting frames and the number of swing assemblies are both two or more, wherein the two bottom supporting frames are arranged opposite to each other along the second horizontal direction, and one swing assembly is arranged corresponding to one bottom supporting frame.

[0025] Therefore, by arranging the bottom supporting frame and the swing assembly on the opposite sides of the stacked product, the stacked product can be balanced in the circumferential direction, and can be more stably lowered into another stacked product to realize the stacking of the two products.

[0026] One preferred embodiment is that the stacker further comprises a driving member, the driving member drives the movement of the movable frame between the product stacking position and the product lifting position, so that the movable frame drives the movement of the bottom supporting frame.

[0027] Therefore, the stacker only needs to arrange one power source, i.e., the driving member, to realize the stacking of multiple products, which can simplify the control system and reduce the cost.

[0028] One preferred embodiment is that the inner wall of the fixed frame is provided with a limiting strip close to the product lifting position, and the limiting strip extends along the vertical direction.

[0029] Further, the number of the limiting strips is two or more, and the multiple limiting strips are arranged along the circumference of the fixed frame.

[0030] Therefore, the limiting strips are used for shaping the carton lifted to the position, and meanwhile, a certain friction force is applied to the carton when the carton falls to stack, so as to avoid that the upper carton generates a large impact force to the lower carton.

[0031] To achieve the above-mentioned second object, the application provides a production line comprising the above-mentioned stacking machine.

[0032] To achieve the above-mentioned third object, the application provides a working method of the above-mentioned stacking machine, which comprises: a first stacking product is conveyed to the product stacking position, the swing assembly is limitedly matched with the bottom supporting bracket, the bottom supporting bracket is kept in the closed position, and the first stacking product is kept at the product placing position; along with the movement of the moving frame relative to the fixed frame in the vertical direction upward, when the first stacking product leaves the product stacking position, a second stacking product is conveyed to the product stacking position; the moving frame continues to move upward, the swing assembly contacts the pushing piece, the pushing piece applies a force to the top of the swing assembly, so that the swing assembly rotates, the swing assembly applies a force to the bottom supporting bracket, the limiting between the swing assembly and the bottom supporting bracket is released, the bottom supporting bracket rotates around the first rotation axis to the open position, and the first stacking product falls into the second stacking product under the action of its own gravity. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a perspective view of an embodiment of the stacking machine of the application.

[0034] Figure 2 is a perspective view of an embodiment of the stacking machine of the application. Figure 1

[0035] Figure 3 is a left view of an embodiment of the stacking machine of the application.

[0036] Figure 4 is a perspective view of the moving frame and the bottom supporting bracket in an embodiment of the stacking machine of the application.

[0037] Figure 5 is a left view of the moving frame and the bottom supporting bracket in an embodiment of the stacking machine of the application.

[0038] Figure 6 is a structural view of the limiting assembly in an embodiment of the stacking machine of the application.

[0039] Figure 7 is a partial enlarged view of an embodiment of the stacking machine of the application.

[0040] Figure 8 is a structural view of an embodiment of the stacking machine of the application in an initial state. ​

[0041] Figure 9 is a state diagram of the guide wheel in the guide wheel assembly of the palletizer embodiment of the present application during movement along the guide ramp.

[0042] Figure 10 is a position relationship diagram of the moving frame, the guide wheel assembly and the bottom support in the state Figure 9

[0043] Figure 11 is a state diagram of the guide wheel assembly and the bottom support after reset in the palletizer embodiment of the present application.

[0044] The present application will be further described by the following figures and examples. DETAILED DESCRIPTION

[0045] Various exemplary embodiments of the present application will now be described in detail with reference to the figures. The description of the exemplary embodiments is only intended to illustrate the present application and is in no way intended to limit the present application and its application or use. The present application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided in order to make the present application thorough and complete and to fully convey the scope of the present application to those skilled in the art. It should be noted that the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and values set forth in these embodiments should be interpreted as merely exemplary and not as a limitation unless otherwise specifically stated.

[0046] The terms "first", "second", and similar terms in the present application do not indicate any order, number or importance, but are only used to distinguish different parts. The terms "include" or "contain" and similar terms mean that the elements before the term encompass the elements listed after the term, and do not exclude the possibility of also encompassing other elements. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] In the present application, when it is described that a particular device is located between a first device and a second device, there can be an intervening device between the particular device and the first device or the second device, or there can be no intervening device. When it is described that a particular device is connected to other devices, the particular device can be directly connected to the other devices without an intervening device, or can not be directly connected to the other devices with an intervening device.

[0048] ​All terms used herein, including technical terms or scientific terms, have the same meaning as understood by a person of ordinary skill in the art, unless otherwise specifically defined. It should also be understood that terms defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and not in an idealized or overly formal sense unless expressly so defined herein.

[0049] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0050] Reference is made to Figures 1 to 3 The production line of the embodiment includes a conveying track and a palletizer, and the palletizer is arranged at the downstream end of the conveying direction of the conveying track. The palletized product of the embodiment is a carton.

[0051] The palletizer includes a fixed frame 1, a moving frame 2, a bottom support 3, a swing assembly 4, a reset assembly 5, and a driving member (not shown).

[0052] The fixed frame 1 is assembled by a plurality of lean pipes and pipe joints, and has a cuboid shape. The fixed frame 1 is internally provided with a product stacking position 101 and a product lifting position 102. In the vertical direction (i.e., the Z-axis direction), the product lifting position 102 is located above the product stacking position 101. The driving member drives the moving frame 2 to move between the product stacking position 101 and the product lifting position 102, so that the moving frame 2 drives the bottom support 3 and the carton placed on the bottom support 3 to move. Optionally, the driving member is a pneumatic cylinder.

[0053] The inner wall of the fixed frame 1 is provided with four limiting strips 11 in the shape of long strips and extending along the Z-axis direction near the product lifting position 102. The four limiting strips 11 are arranged along the circumferential direction of the fixed frame 1 and close to the four corners of the fixed frame 1, for shaping the carton lifted to this position, and for exerting a certain friction force on the carton when the carton is falling for palletizing, so as to avoid a large impact force on the carton below from the carton above. In addition, in order to avoid interference between the carton and the limiting strips 11 during the lifting process, the lower end of each limiting strip 11 is bent towards the outside of the fixed frame 1.

[0054] The fixed frame 1 is provided with two groups of pushing members 12, each pushing member 12 is arranged close to the product lifting position 102, and the two groups of pushing members 12 are arranged on the two sides of the fixed frame 1 in the Y-axis direction. Each group of pushing members 12 includes two pushing members 12, and the two pushing members 12 in the same group are arranged along the X-axis direction.

[0055] Each pushing piece 12 comprises a pushing support rod 121 and a guide inclined rail 122, each guide inclined rail 122 is fixed to the fixed frame 1 through the corresponding pushing support rod 121, and each guide inclined rail 122 gradually moves away from the center line of the fixed frame 1 from the bottom end to the top end.

[0056] The fixed frame 1 is provided with a guide rail 13 extending in the vertical direction, the moving frame 2 is in sliding fit with the guide rail 13, the bottom supporting bracket 3 is rotationally connected with the moving frame 2, the product placing position 30 is formed above the bottom supporting bracket 3, the bottom opening 301 is arranged below the product placing position 30, and the bottom supporting bracket 3 can rotate about the first rotation axis between the closing position for closing the bottom opening 301 and the opening position for opening the bottom opening 301. The first rotation axis extends along the first horizontal direction (i.e. the X-axis direction).

[0057] The number of the bottom supporting bracket 3 and the swing assembly 4 is two, the two bottom supporting brackets 3 are oppositely arranged along the second horizontal direction, and one swing assembly 4 is correspondingly arranged with one bottom supporting bracket 3. The number of the reset assembly 5 is two groups, one group of reset assemblies 5 is arranged below each bottom supporting bracket 3, each group of reset assemblies 5 comprises two reset assemblies 5, and the reset assemblies 5 in the same group are arranged along the extension direction of the bottom supporting bracket 3.

[0058] Referring to Figures 4 to 7 Each bottom supporting bracket 3 comprises a bottom supporting part 31, two first support rods 32 arranged in parallel, two bottom supporting connecting parts 33 arranged coaxially, two second support rods 34 arranged in parallel, and two bottom supporting rollers 35 arranged coaxially. The bottom supporting connecting part 33 is rotationally mounted on the moving frame 2, the extension direction of the bottom supporting part 31 is parallel to the first rotation axis, the first support rod 32 and the second support rod 34 are arranged at an angle and are connected with the bottom supporting connecting part 33, the plane where the first support rod 32 and the second support rod 34 are located is arranged at an angle with the first rotation axis, preferably, the first support rod 32 and the second support rod 34 are arranged vertically, and the first rotation axis is perpendicular to the plane where the first support rod 32 and the second support rod 34 are located. The bottom supporting part 31 is arranged at one end of the first support rod 32 away from the bottom supporting connecting part 33, the bottom supporting roller 35 is arranged at one end of the second support rod 34 away from the bottom supporting connecting part 33, and the axis of the bottom supporting roller 35 is parallel to the first rotation axis.

[0059] Each of the bottom support 31 comprises a support plate 311, a counterweight pipe 312 and two coplanar reset force plates 313, the support plate 311 is in a horizontal state and extends in the X-axis direction in the initial state, the reset force plates 313 are arranged parallel to the support plate 311, the counterweight pipe 312 is arranged at the bottom of the support plate 311 and is arranged parallel to the support plate 311, the reset force plates 313 are arranged at both ends of the support plate 311, each reset force plate 313 is arranged opposite to a reset assembly 5 in the vertical direction, and the reset assembly 5 provides a supporting force to the corresponding reset force plate 313 in the initial state.

[0060] The swing assembly 4 is rotationally connected with the moving frame 2. In the initial state, the swing assembly 4 is limitedly matched with the bottom support bracket 3, and the bottom support bracket 3 is kept in the closed position; along with the moving frame 2 moving upward relative to the fixed frame 1 in the vertical direction, the forcing piece 12 applies a force to the top of the swing assembly 4, forcing the swing assembly 4 to rotate, and the swing assembly 4 applies a force to the bottom support bracket 3, releasing the limitation between the swing assembly 4 and the bottom support bracket 3, and the bottom support bracket 3 rotates around the first rotation axis to the open position.

[0061] The swing assembly 4 comprises a guide wheel assembly 6 and a limiting assembly 7. Each guide wheel assembly 6 comprises a rotating part 61, two parallel guide support rods 62 and two coaxial guide wheels 63, the rotating part 61 is rotationally installed on the moving frame 2, the second rotation axis of the rotating part 61 is parallel to the first rotation axis, the rotating part 61 is arranged at the middle of the guide support rods 62 and is connected perpendicularly to the two guide support rods 62, one guide wheel 63 is arranged at the top end of one guide support rod 62, each guide wheel 63 has a sliding part 631 thereon, the sliding part 631 is slidingly matched with the corresponding guide inclined rail 122, and the guide support rod 62 is further provided with a force applying part 621 at a position close to the bottom end, and the force applying part 621 is located on the side of the rotating part 61 away from the guide wheel 63. In the initial state, the limiting assembly 7 is in abutment with the bottom support bracket 3. The force applying part 621 can drive the limiting assembly 7 to move to a position separated from the bottom support bracket 3. The arrangement of the guide wheel 63 can reduce the friction between the guide wheel assembly 6 and the guide inclined rail 122, and thus make the components of the whole palletizer move more smoothly.

[0062] The limiting assembly 7 comprises a limiting frame 701 arranged horizontally and two limiting rods 702 extending in the vertical direction, the limiting frame 701 extends along the X-axis direction, and the two limiting rods 702 are arranged at both ends of the limiting frame 701 in the X-axis direction and extend upward from the limiting frame 701.

[0063] The limiting frame 701 is provided with a limiting connection part 71 and a force-receiving part 72. Each limiting rod 702 has a limiting part 73 at its top. The limiting connection part 71 is slidably connected to the fixed frame 1 in the second horizontal direction (i.e., the Y-axis direction). Specifically, the fixed frame 1 is provided with a frame slide rail 14 extending along the Y-axis direction, and the limiting connection part 71 is slidably engaged with the frame slide rail 14. In the initial state, the force-receiving part 72 and the force-applying part 621 are engaged in a limiting engagement in the second horizontal direction, and the limiting part 73 abuts against the bottom support roller 35 of the bottom support bracket 3 and is inclined toward the bottom support roller 35, so that the bottom support bracket 3 is kept in the closed position.

[0064] The reset assembly 5 is positioned near the product stacking position 101. The reset assembly 5 drives the bottom support bracket 3 to move from the open position to the closed position. Each reset assembly 5 includes a reset support member 51 and a reset roller 52. The reset roller 52 is located on top of the reset support member 51 and can drive the bottom support bracket 31 to rotate around a first rotation axis. The axis of rotation of the reset roller 52 around the reset support member 51 is parallel to the first rotation axis. The reset roller 52 reduces the friction between the reset assembly 5 and the bottom support bracket 3 during the rotational reset process, thereby improving the service life of the palletizer.

[0065] Combination Figures 8 to 11 The working process of the palletizer of the present invention is described as follows.

[0066] First, the first carton is conveyed to the palletizer via a conveyor track. At this point, as... Figure 8 As shown, the movable frame 2 is located on the product stacking position 101 within the fixed frame 1. The limiting part 73 abuts against the bottom support roller 35 of the bottom support bracket 3 in the Y-axis direction. The limiting part 73 is located outside the bottom support roller 35 to limit the bottom support bracket 3, keeping it in the closed position. The first carton is conveyed to the product placement position 30 and supported by the bottom support 31 of the bottom support bracket 3. At this time, the product placement position 30 and the product stacking position 101 coincide. At this time, the limiting connection part 71 of the limiting component 7 is located at one end of the frame slide rail 14, the guide support rod 62 of the guide wheel assembly 6 is in a vertical state, and the reset component 5 supports the bottom support 31 from below. The state of each component at this time is the initial state described above.

[0067] Next, the drive unit drives the moving frame 2 and moves the bottom support bracket 3 and the swing assembly 4 upward together. During this process, the limiting part 73 remains in contact with the bottom support roller 35 to limit the bottom support bracket 3. At the same time, after the first carton moves upward and completely leaves the product stacking position 101, the second carton is conveyed by the conveyor track to the product stacking position 101 in the palletizer.

[0068] Then, when the moving frame 2 moves to the position where the guide wheel 63 is in contact with the guide ramp 122, as shown in Figure 9 and Figure 10 With the continuous upward movement of the moving frame 2, the guide wheel 63 moves along the guide ramp 122, and the guide support rod 62 swings with the rotating part 61 around the second rotating axis by a certain angle. Based on the principle of leverage, the force applying part 621 on the guide support rod 62 applies a force along the Y-axis direction to the force receiving part 72 of the limiting assembly 7, pushing the limiting assembly 7 to move along the Y-axis towards the center line side of the fixed frame 1. After the limiting part 73 pushes the bottom supporting roller 35 of the bottom supporting bracket 3, the limiting part 73 moves to the side of the bottom supporting roller 35 close to the center line of the fixed frame 1, and the limiting part 73 separates from the bottom supporting roller 35 and releases the limitation on the bottom supporting roller 35. At this time, under the action of the self-gravity of the bottom part 31, the bottom supporting bracket 3 rotates around the first rotating axis, and the bottom part 31 moves from the closed position to the open position, and the first carton falls into the second carton under the action of its own gravity.

[0069] Then, the driving part drives the moving frame 2 to move and drives the bottom supporting bracket 3 and the swinging assembly 4 to move downward together, as shown in Figure 11 When the bottom part 31 abuts against the reset roller 52 of the reset assembly 5, the reset roller 52 applies a force to the bottom part 31, forcing the bottom supporting bracket 3 to rotate reversely to the closed position and supporting the second carton below. At the same time, the guide wheel assembly 6 and the limiting assembly 7 are reset, the limiting part 73 cooperates with the bottom supporting roller 35 to limit, and each part is reset to the initial state.

[0070] The above process is repeated to realize the stacking of multiple cartons.

[0071] As can be seen from the above, when the product needs to be stacked, the stacking machine works, in the initial state, the swing assembly is limitedly matched with the bottom supporting bracket, the bottom supporting bracket is kept in the closed position, the first carton and the like stacking product is kept at the product placing position, and is moved upward to the product lifting position along with the moving frame, at the same time, the second stacking product enters the product stacking position along with the production line, then, the forcing piece applies a force to the top of the swing assembly, so that the swing assembly rotates, then, the swing assembly applies a force to the bottom supporting bracket, the limit between the swing assembly and the bottom supporting bracket is released, the bottom supporting bracket rotates around the first rotation axis to the open position, the first stacking product falls into the second stacking product under the action of its own gravity, the above process is repeated to realize the stacking of multiple products. Since the stacking machine only realizes the stacking of the product through the mutual cooperation of the mechanical structures, a complex control system is not needed, and a high-precision mechanical arm is not needed, so that the structure is simple and the cost is low, at the same time, the stacking machine is small in size and small in floor space, can be directly arranged above the production line, and will not affect the original production path. In addition, the stacking machine uses single power to trigger and reset the bottom supporting bracket, and improves the power utilization rate.

[0072] In addition, the number of the bottom supporting bracket and the swing assembly can also be one, or the number of the bottom supporting bracket and the swing assembly can also be two or more, wherein the two bottom supporting brackets are arranged opposite along the second horizontal direction, and one swing assembly is arranged corresponding to one bottom supporting bracket. A resilient reset piece can also be arranged between the moving frame and the limiting assembly, the resilient reset piece can be a spring, and the two ends of the spring are respectively abutted against the limiting connecting part of the moving frame and the limiting assembly, when the guide wheel assembly is separated from the guide inclined rail, the elastic restoring force of the spring forces the limiting assembly to reset. The above changes can also achieve the purpose of the present application.

[0073] Finally, it needs to be emphasized that the above is only the preferred embodiment of the present application, and is not used to limit the present application, for the person skilled in the art, the present application can have various changes and modifications, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A palletizing machine, characterized in that, include: A fixed frame is provided, which includes a product stacking position and a product lifting position. The product lifting position is located above the product stacking position. A pusher is provided on the fixed frame. A movable frame that slides in a vertical direction with the fixed frame; A bottom support bracket is rotatably connected to the movable frame. A product placement position is formed above the bottom support bracket, and a bottom opening is provided below the product placement position. The bottom support bracket can rotate around a first rotation axis between a closed position with the bottom opening closed and an open position with the bottom opening open. A swing assembly, which is rotatably connected to the movable frame; In the initial state, the swing assembly is engaged with the bottom support bracket, and the bottom support bracket remains in the closed position; As the movable frame moves vertically upward relative to the fixed frame, the pushing member applies a force to the top of the swing assembly, forcing the swing assembly to rotate. The swing assembly applies a force to the bottom support bracket, releasing the restriction between the swing assembly and the bottom support bracket. The bottom support bracket rotates around the first rotation axis to the open position.

2. The palletizing machine according to claim 1, characterized in that: The pushing component includes a guide rail that gradually moves away from the center line of the fixed frame from the bottom to the top. The swing assembly includes a sliding part that slides in conjunction with the guide rail.

3. The palletizing machine according to claim 2, characterized in that: The swing assembly includes a guide wheel assembly and a limiting assembly; The guide wheel assembly includes a rotating part, a guide support rod, and a guide wheel. The rotating part is rotatably mounted on the movable frame. The second rotation axis of the rotating part is parallel to the first rotation axis. The rotating part is located in the middle of the guide support rod. The guide wheel is located at the top of the guide support rod. The sliding part is located on the guide wheel. The guide support rod is also provided with a force-applying part, which is located on the side of the rotating part away from the guide wheel. In the initial state, the limiting component abuts against and limits the bottom support bracket; The force-applying part can drive the limiting component to move to a position where it is separated from the bottom support bracket.

4. The palletizing machine according to claim 3, characterized in that: The first rotation axis extends along a first horizontal direction; The limiting component includes a limiting connection part, a force-receiving part, and a limiting part. The limiting connection part is slidably connected to the fixed frame in a second horizontal direction, which is perpendicular to the first horizontal direction. In the initial state, the force-receiving part and the force-applying part are in a limiting engagement in the second horizontal direction, and the limiting part abuts against the bottom support bracket.

5. The palletizing machine according to any one of claims 1 to 4, characterized in that: The bottom support bracket includes a bottom support, a first support rod, a bottom support connecting part, a second support rod, and bottom support rollers; The bottom support connection is rotatably mounted on the movable frame. The extension direction of the bottom support is parallel to the first rotation axis. The first support rod and the second support rod are arranged at an angle and are both connected to the bottom support connection. The plane where the first support rod and the second support rod are located is arranged at an angle to the first rotation axis. The bottom support is located at the end of the first support rod away from the bottom support connection. The bottom support roller is located at the end of the second support rod away from the bottom support connection. The axis of the bottom support roller is parallel to the first rotation axis.

6. The palletizing machine according to claim 5, characterized in that: The palletizer also includes a reset component, which is located near the product stacking position and drives the bottom support bracket to move from the open position to the closed position.

7. The palletizing machine according to claim 6, characterized in that: The reset assembly includes a reset support and a reset roller. The reset roller is disposed on the top of the reset support and can drive the bottom of the support to rotate around the first rotation axis.

8. The palletizing machine according to claim 6, characterized in that: The number of reset components is two or more, and multiple reset components are arranged along the extension direction of the bottom of the support.

9. The palletizing machine according to claim 4, characterized in that: The number of the bottom support bracket and the swing assembly are both two or more, wherein two of the bottom support brackets are arranged opposite each other along the second horizontal direction, and one swing assembly is arranged corresponding to one of the bottom support brackets.

10. The palletizing machine according to any one of claims 1 to 4, characterized in that: The palletizer also includes a drive unit that drives the moving frame to move between the product stacking position and the product lifting position, thereby causing the moving frame to move the bottom support bracket.

11. The palletizing machine according to any one of claims 1 to 4, characterized in that: A limit strip is provided on the inner wall of the fixed frame near the product lifting position, and the limit strip extends in the vertical direction.

12. The palletizer according to claim 11, characterized in that: The number of limiting strips is two or more, and multiple limiting strips are arranged circumferentially along the fixed frame.

13. A production line, characterized in that, Including the palletizing machine as described in any one of claims 1 to 12.

14. The working method of a palletizer, characterized in that, Applied to the palletizing machine as described in any one of claims 1 to 12, the operating method includes: The first palletized product is conveyed to the product stacking position, the swing assembly is limited by the bottom support bracket, the bottom support bracket is held in the closed position, and the first palletized product is held at the product placement position. As the moving frame moves vertically upward relative to the fixed frame, after the first palletized product leaves the product stacking position, the second palletized product is conveyed to the product stacking position; The moving frame continues to move upward. After the swing assembly contacts the pushing member, the pushing member applies a force to the top of the swing assembly, causing the swing assembly to rotate. The swing assembly applies a force to the bottom support bracket, releasing the restriction between the swing assembly and the bottom support bracket. The bottom support bracket rotates around the first rotation axis to the open position, and the first palletized product falls into the second palletized product under its own gravity.

Images