Roadway stacking machine for paper-plastic cup stand production

Abstract

The invention discloses a roadway stacking machine for paper-plastic cup stand production, and belongs to the field of stacking machines, the roadway stacking machine comprises a base, and the upper end of the base is fixedly connected with a fixing plate and a mounting frame. The inner side of the mounting frame is fixedly connected with an electric guide rail, and the inner side of the fixing plate is fixedly connected with a bearing plate. Spatial compression and dynamic unfolding of the stacker material taking device during extending are achieved, linear extending movement of the bearing plate A is synchronously converted into rotating movement of the rotating cylinder through cooperation of a spiral groove in the fixing rod and a sliding shaft in the rotating cylinder, the speed is reduced, torque is increased, the direction is changed, a linkage rod is driven to swing through a worm and worm gear pair, and the material taking device is driven to rotate. The bearing plate B is pushed through the sliding groove to stretch out in an accelerated mode, the longitudinal space in the roadway is greatly saved, and more goods positions are allowed to be arranged; and when goods are taken, the bracket can be quickly unfolded to form a complete bracket with enough bearing span.

Description

A stacker crane for paper-plastic cup holder production Technical Field

[0001] This application relates to the field of stacker cranes, and more specifically, to a lane stacker crane for the production of paper-plastic cup holders. Background Technology

[0002] With the rapid development of the catering and packaging industries, the market demand for paper and plastic cup holders continues to rise. The automated warehousing process of "raw material storage - semi-finished product transfer - finished product stacking" in its production process has put forward higher requirements for the space utilization, operational stability and adaptability of equipment. At present, the warehousing and transfer in paper and plastic cup holder production workshops mostly rely on traditional aisle stacker cranes.

[0003] For example, Chinese Patent Publication No. CN119821897B discloses the following technical solution: A double-column aisle stacker crane for automated storage and retrieval systems, comprising a movable base, a double-column lift fixedly connected to the upper surface of the movable base, a rotating platform fixedly connected to the output end of the double-column lift, a fork assembly installed on the upper surface of the rotating platform, and shelves provided on both sides of the double-column lift; the existing technology has the following problems: the fork assembly in the above device adopts a multi-stage telescopic structure, which requires a large longitudinal aisle space when extended, resulting in the need to reserve redundancy in the spacing between shelf positions, thus limiting the number of positions. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a stacker crane for paper-plastic cup holder production, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this application provides a stacker crane for paper-plastic cup holder production, comprising a base, with a fixing plate and a mounting frame fixedly connected to the upper end of the base. An electric guide rail is fixedly connected to the inner side of the mounting frame, and a support plate is fixedly connected to the inner side of the fixing plate. A lifting plate is slidably connected to the outer wall of the electric guide rail, and a U-shaped plate is fixedly connected to the upper end of the lifting plate. A double-acting cylinder is fixedly connected to the inner side of the U-shaped plate, and a connecting block is fixedly connected to the output end of the double-acting cylinder. A receiving plate A is fixedly connected to the upper end of the connecting block, and a receiving plate B is slidably connected to the inner side of the receiving plate A. A fixing block A is fixedly connected to the inner wall of the U-shaped plate. A fixed rod is fixedly connected to the wall. A fixed block B is fixedly connected to the bottom of the receiving plate A. A rotating cylinder is rotatably connected to the inner side of the fixed block B. A worm gear sleeve is fixedly fitted on the outer wall of the rotating cylinder. A rotating shaft is rotatably connected to the inner side of the fixed block B. A worm wheel is fixedly fitted on the outer wall of the rotating shaft. A linkage rod is fixedly connected to the top of the rotating shaft. A sliding groove A is opened on the inner side of the linkage rod. A sliding shaft A is fixedly connected to the bottom of the receiving plate B. A spiral groove is opened on the outer wall of the fixed rod. A sliding shaft B is fixedly connected to the inner wall of the rotating cylinder.

[0006] Preferably, the bottom of the receiving plate A is provided with a groove B, and the sliding shaft A is slidably connected inside the groove A and the groove B.

[0007] Preferably, the rotating drum is slidably sleeved on the outer wall of the fixed rod, and the sliding shaft B is slidably connected inside the spiral groove.

[0008] Preferably, the rotating drum and the worm sleeve are located on the side of the rotating shaft and the worm wheel, and the worm sleeve meshes with the worm wheel.

[0009] Preferably, the upper end of the receiving plate B is equipped with a fixing component, the fixing component includes a mounting shaft, the mounting shaft is rotatably connected to the inner side of the receiving plate B, a limit plate and a movable block are fixedly connected to the outer wall of the mounting shaft, a receiving plate C is provided on the inner side of the receiving plate B, a receiving groove is opened on the outer side of the receiving plate C, a sliding groove C is opened on the inner wall of the receiving groove, and movable shafts are fixedly connected to both sides of the movable block.

[0010] Preferably, the end of the movable shaft away from the movable block is slidably connected inside the slide groove C.

[0011] Preferably, a spring A is fixedly connected to the inner wall of the receiving plate B, and the top of the spring A is fixedly connected to the receiving plate C.

[0012] Preferably, the outer wall of the fixed plate is equipped with a protective component, which includes a movable rod that slides through the fixed plate. The two ends of the movable rod are fixedly connected to a movable plate and a fixed ring. Two inclined slots are formed at the upper end of the movable plate. A rotating rod is rotatably connected to the inner side of the outer wall of the fixed plate. A protective plate is fixedly connected to the outer wall of the rotating rod. One end of the rotating rod passes through the fixed plate and is fixedly connected to a rectangular frame. A limiting plate is fixedly connected to the outer wall of the fixed plate. A translation rod slides along the inner side of the limiting plate. Sliding shafts C and D are fixedly connected to the two ends of the translation rod, respectively. A push block is fixedly connected to the side of the receiving plate A.

[0013] Preferably, the sliding shaft C is slidably connected inside the inclined groove, and the sliding shaft D is slidably connected inside the rectangular frame.

[0014] Preferably, a spring B is fixedly connected between the fixing plate and the fixing ring, and slots are provided on both sides of the support plate, with the protective plate movably connected inside the slots.

[0015] The advantages of this application are: (1) This application realizes the spatial compression and dynamic unfolding of the stacker crane material handling device when it extends. By using the cooperation between the spiral groove on the fixed rod and the sliding shaft inside the rotating drum, the linear extension motion of the receiving plate A is synchronously converted into the rotational motion of the rotating drum. By reducing the speed and increasing the torque through the worm gear pair and changing the direction, the linkage rod is driven to swing, and then the receiving plate B is pushed to extend faster through the sliding groove, which greatly saves the longitudinal space in the aisle and allows more cargo positions to be arranged; while when picking up goods, it can be quickly unfolded into a complete bracket with sufficient bearing span.

[0016] (2) By setting a limit component, this application effectively solves the safety hazard of goods tipping over or slipping during high-speed operation of the stacker crane. When the goods are lifted by the top support plate C, gravity compresses the spring, causing the support plate C to descend, thereby driving the limit plates on both sides to flip upward and automatically clamp the goods from both sides. The clamping force is proportional to the weight of the goods, which ensures sufficient fixing force and avoids overload damage.

[0017] (3) By setting up protective components, the extension movement of the picking device is converted into the upward flipping and opening of the protective plate by the push block on the side and the linkage mechanism. When the picking device retracts, the spring drive mechanism resets and the protective plate automatically falls and closes, ensuring that the protective door of the corresponding storage location will only open when the picking device has arrived and is ready to operate. At other times, the protective door is always closed, preventing goods from falling off the shelf due to accidental collision. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of the accompanying drawings are used to explain the application and do not constitute an undue limitation of the application. In the drawings: FIG1 is a schematic diagram of the overall structure of the present invention; FIG2 is a schematic diagram of the side cross-sectional structure of the present invention; FIG3 is a schematic diagram of the partial three-dimensional cross-sectional structure of the present invention (first); FIG4 is a schematic diagram of the enlarged structure at point A in FIG3 of the present invention; FIG5 is a schematic diagram of the partial three-dimensional cross-sectional structure of the present invention (second); FIG6 is a schematic diagram of the enlarged structure at point B in FIG5 of the present invention; FIG7 is a schematic diagram of the enlarged structure at point A in FIG1 of the present invention.

[0019] In the above diagram, 1. Base; 2. Fixing plate; 3. Mounting frame; 4. Electric guide rail; 51. Lifting plate; 52. C-shaped plate; 54. Double-acting cylinder; 55. Connecting block; 56. Support plate A; 57. Support plate B; 58. Fixing block A; 59. Fixing rod; 510. Fixing block B; 511. Rotary cylinder; 512. Worm gear sleeve; 513. Rotating shaft; 514. Worm wheel; 515. Linkage rod; 516. Slide groove A; 517. Slide shaft A; 518. Slide groove B; 519. Spiral groove; 520. 6. Sliding shaft B; 6. Fixed assembly; 61. Mounting shaft; 62. Limiting plate; 63. Movable block; 64. Spring A; 65. Support plate C; 66. Receiving groove; 67. Sliding groove C; 68. Movable shaft; 7. Protective assembly; 71. Moving rod; 72. Moving plate; 73. Fixing ring; 74. Inclined groove; 75. Rotating rod; 76. Protective plate; 77. Rectangular frame; 78. Limiting plate; 79. Translation rod; 710. Sliding shaft C; 711. Sliding shaft C; 712. Spring B; 713. Push block; 8. Support plate. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0024] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Example 1, referring to Figures 1-7, provides a stacker crane for paper-plastic cup holder production, including a base 1. A fixing plate 2 and a mounting frame 3 are fixedly connected to the upper end of the base 1. An electric guide rail 4 is fixedly connected to the inner side of the mounting frame 3, and a support plate 8 is fixedly connected to the inner side of the fixing plate 2. A lifting plate 51 is slidably connected to the outer wall of the electric guide rail 4. A U-shaped plate 52 is fixedly connected to the upper end of the lifting plate 51. A double-acting cylinder 54 is fixedly connected to the inner side of the U-shaped plate 52. A connecting block 55 is fixedly connected to the output end of the double-acting cylinder 54. A receiving plate A56 is fixedly connected to the upper end of the connecting block 55. A receiving plate B57 is slidably connected to the inner side of the receiving plate A56. The inner wall of the U-shaped plate 52 is fixed... A fixed block A58 is connected, and a fixed rod 59 is fixedly connected to the outer wall of the fixed block A58. A fixed block B510 is fixedly connected to the bottom of the receiving plate A56. A rotating cylinder 511 is rotatably connected to the inner side of the fixed block B510. A worm gear sleeve 512 is fixedly sleeved on the outer wall of the rotating cylinder 511. A rotating shaft 513 is rotatably connected to the inner side of the fixed block B510. A worm wheel 514 is fixedly sleeved on the outer wall of the rotating shaft 513. A linkage rod 515 is fixedly connected to the top of the rotating shaft 513. A sliding groove A516 is opened on the inner side of the linkage rod 515. A sliding shaft A517 is fixedly connected to the bottom of the receiving plate B57. A spiral groove 519 is opened on the outer wall of the fixed rod 59. A sliding shaft B520 is fixedly connected to the inner wall of the rotating cylinder 511.

[0027] The bottom of the receiving plate A56 is provided with a sliding groove B518. The sliding shaft A517 is slidably connected inside the sliding groove A516 and the sliding groove B518. The linkage rod 515 drives the sliding shaft A517 and the receiving plate B57 to move through the sliding groove A516. The sliding groove B518 provides space for the movement of the sliding shaft A517.

[0028] The rotating drum 511 is slidably sleeved on the outer wall of the fixed rod 59, and the sliding shaft B520 is slidably connected inside the spiral groove 519. With the cooperation of the spiral groove 519 and the sliding shaft B520, the rotating drum 511 can rotate while sliding on the outer wall of the fixed rod 59.

[0029] The rotating drum 511 and the worm sleeve 512 are located on the side of the rotating shaft 513 and the worm wheel 514, and the worm sleeve 512 meshes with the worm wheel 514. Thus, the worm sleeve 512 can transmit the rotational power of the rotating drum 511 to the rotating shaft 513 through the worm wheel 514.

[0030] In practical use, the support plate 8 is used to place the raw materials required for the production of paper-plastic cup holders. When it is necessary to remove the items placed between a certain layer of support plates 8, the lifting plate 51 is moved to the corresponding height by the electric guide rail 4. Then, the double-acting cylinder 54 drives the connecting block 55 to move the receiving plate A56 to the bottom in the direction of the support plate 8. During this process, the receiving plate A56 drives the fixing block B510 to move, so that the rotating drum 511 slides along the fixing rod 59. Since the sliding shaft B520 slides in the spiral groove 519, the rotating drum 511 rotates and drives the worm sleeve 512 to rotate synchronously. The worm sleeve 512 meshes with the worm wheel 514, thereby driving the rotating shaft 513 to rotate. This causes the linkage rod 515 to swing around the rotating shaft 513. When the linkage rod 515 swings, through the cooperation of the sliding groove A516 and the sliding shaft A517, it drives the receiving plate B57 to slide out along the inner side of the receiving plate A56. This allows the receiving plate B57 to move outward more quickly as the receiving plate A56 moves outward. Through the coordinated extension of the receiving plate A56 and the receiving plate B57, the overall bearing capacity can be reduced. The space occupied by the support device allows more space to be used for placing items. When the receiving plate B57 moves to the bottom of the support plate 8, it continues to be driven by the electric guide rail 4 to lift the lifting plate 51, so that the receiving plate A56 and the receiving plate C65 on the upper side of the receiving plate B57 together lift the items on the support plate 8. Then the double-acting cylinder 54 resets, driving the receiving plate A56 and the receiving plate B57 together with the items to retract. Then the items are transported to the designated position for stacking via the electric guide rail 4.

[0031] Example 2, referring to Figures 1-7, is based on Example 1. The upper end of the receiving plate B57 is equipped with a fixing component 6. The fixing component 6 includes a mounting shaft 61, which is rotatably connected to the inner side of the receiving plate B57. The outer wall of the mounting shaft 61 is fixedly connected to a limit plate 62 and a movable block 63. The inner side of the receiving plate B57 is provided with a receiving plate C65. The outer side of the receiving plate C65 is provided with a receiving groove 66. The inner wall of the receiving groove 66 is provided with a sliding groove C67. Movable shafts 68 are fixedly connected to both sides of the movable block 63.

[0032] The end of the movable shaft 68 furthest from the movable block 63 is slidably connected inside the slide groove C67, allowing the receiving plate C65 to rotate via the cooperation of the slide groove C67 and the movable shaft 68 when it is subjected to gravity and descends. A spring A64 is fixedly connected to the inner wall of the receiving plate B67, and the top of the spring A64 is fixedly connected to the receiving plate C65. The spring A64 keeps the receiving plate C65 at a certain height when it is not carrying any goods.

[0033] In practical use, when the receiving plate A56 and receiving plate B57 lift an item upwards, the item first contacts the receiving plate C65 and applies downward pressure to it. Under this pressure, the receiving plate C65 compresses the spring A64, causing it to slide downwards along the inner side of the receiving plate B57. During this process, the receiving groove 66 moves downwards synchronously with the receiving plate C65, and the sliding groove C67 on its inner wall slides relative to the movable shafts 68 on both sides of the movable block 63. Due to the trajectory design of the sliding groove C67, the movable shaft 68, during sliding, drives the movable block 63 to rotate around the mounting shaft 61, thereby causing the limiting plate 62 on the outer wall of the mounting shaft 61 to flip upwards synchronously. After the limiting plate 62 flips over, its upper end gradually approaches and fits against the side of the item, forming a lateral clamping limit on the item, effectively preventing the item from shaking or slipping during lifting and movement, thus improving the stability and safety of the stacking process. When the item is placed in the designated position, the pressure on the receiving plate C65 disappears, the spring A64 recovers its deformation and pushes the receiving plate C65 upward to reset, and the movable shaft 68 slides in the reverse direction in the slide groove C67, causing the limiting plate 62 to flip downward back to the initial position, releasing the clamping of the item so that the next picking and placing operation can be carried out.

[0034] Example 3, referring to Figures 1-7, is based on Example 1. The outer wall of the fixed plate 2 is equipped with a protective component 7. The protective component 7 includes a moving rod 71, which slides through the fixed plate 2. The two ends of the moving rod 71 are fixedly connected to a moving plate 72 and a fixed ring 73. The upper end of the moving plate 72 has two inclined grooves 74. The inner side of the outer wall of the fixed plate 2 is rotatably connected to a rotating rod 75. The outer wall of the rotating rod 75 is fixedly connected to a protective plate 76. One end of the rotating rod 75 passes through the fixed plate 2 and is fixedly connected to a rectangular frame 77. The outer wall of the fixed plate 2 is fixedly connected to a limiting plate 78. The inner side of the limiting plate 78 has a sliding inertia translation rod 79. The two ends of the translation rod 79 are fixedly connected to a sliding shaft C710 and a sliding shaft D711, respectively. The side of the receiving plate A56 is fixedly connected to a push block 713.

[0035] Sliding shaft C710 is slidably connected inside the inclined groove 74, and sliding shaft D711 is slidably connected inside the rectangular frame 77. Sliding shaft D711 is precisely slidably connected to the inner guide rail of the rectangular frame 77 to ensure linear motion within a limited range.

[0036] A spring B712 is fixedly connected between the fixed plate 2 and the fixed ring 73. The support plate 8 has slots on both sides. The protective plate 76 is movably connected inside the slots. The protective plate 76 is embedded inside the slots through a movable connection, which can be appropriately displaced when subjected to force, so as to play a role in buffering and protection.

[0037] In practical use, when the receiving plate A56 moves towards the support plate 8 under the drive of the double-acting cylinder 54 to pick up or put down items, the push block 713 on the side of the receiving plate A56 will move accordingly. When the push block 713 contacts the fixing ring 73, it will push the fixing ring 73 to drive the moving rod 71 and the moving plate 72 to move away from the fixing plate 2. At this time, the spring B712 is compressed. When the moving plate 72 moves, the inclined groove 74 opened at its upper end will generate a lateral thrust on the sliding shaft C710. Since the translation rod 79 is slidably connected to the inner side of the limiting plate 78, the sliding shaft C710 is driven by the force to drive the translation rod 79 to slide horizontally, thereby causing the sliding shaft D711 to slide inside the rectangular frame 77. The rectangular frame 77 is within the sliding shaft D711. The rotation caused by the action of 11 causes the rotating rod 75 and the protective plate 76 to rotate upward around the rotating rod 75 as the axis, so that the protective plate 76 is disengaged from the slots on both sides of the support plate 8, thus removing the protection on the front side of the items on the support plate 8 and making it easier to pick up the goods; when the items are lifted by the support plate A56 and the support plate B57 and move back under the reset action of the double-acting cylinder 54, the push block 713 separates from the fixed ring 73, the spring B712 restores its deformation, pushes the fixed ring 73, the moving rod 71 and the moving plate 72 to reset, the thrust of the inclined groove 74 on the sliding shaft C710 disappears, and the translation rod 79 resets under the reverse action of the rectangular frame 77, causing the rotating rod 75 and the protective plate 76 to rotate downward and re-enter the slots of the support plate 8.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stacker crane for producing paper-plastic cup holders, comprising a base, characterized in that, A fixing plate and a mounting frame are fixedly connected to the upper end of the base. An electric guide rail is fixedly connected to the inner side of the mounting frame, and a support plate is fixedly connected to the inner side of the fixing plate. A lifting plate is slidably connected to the outer wall of the electric guide rail. A U-shaped plate is fixedly connected to the upper end of the lifting plate. A double-acting cylinder is fixedly connected to the inner side of the U-shaped plate. A connecting block is fixedly connected to the output end of the double-acting cylinder. A receiving plate A is fixedly connected to the upper end of the connecting block. A receiving plate B is slidably connected to the inner side of the receiving plate A. A fixing block is fixedly connected to the inner wall of the U-shaped plate. A. A fixing rod is fixedly connected to the outer wall of the fixing block A. A fixing block B is fixedly connected to the bottom of the receiving plate A. A rotating cylinder is rotatably connected to the inner side of the fixing block B. A worm gear sleeve is fixedly fitted on the outer wall of the rotating cylinder. A rotating shaft is rotatably connected to the inner side of the fixing block B. A worm wheel is fixedly fitted on the outer wall of the rotating shaft. A linkage rod is fixedly connected to the top of the rotating shaft. A sliding groove A is opened on the inner side of the linkage rod. A sliding shaft A is fixedly connected to the bottom of the receiving plate B. A spiral groove is opened on the outer wall of the fixing rod. A sliding shaft B is fixedly connected to the inner wall of the rotating cylinder.

2. The stacker crane for paper-plastic cup holder production according to claim 1, characterized in that, The bottom of the receiving plate A is provided with a sliding groove B, and the sliding shaft A is slidably connected inside the sliding groove A and the sliding groove B.

3. The stacker crane for paper-plastic cup holder production according to claim 1, characterized in that, The rotating drum is slidably sleeved on the outer wall of the fixed rod, and the sliding shaft B is slidably connected inside the spiral groove.

4. The stacker crane for paper-plastic cup holder production according to claim 1, characterized in that, The rotating drum and the worm sleeve are located on the side of the rotating shaft and the worm wheel, and the worm sleeve meshes with the worm wheel.

5. A stacker crane for paper-plastic cup holder production according to claim 1, characterized in that, The upper end of the receiving plate B is equipped with a fixing component, which includes a mounting shaft. The mounting shaft is rotatably connected to the inner side of the receiving plate B. A limit plate and a movable block are fixedly connected to the outer wall of the mounting shaft. A receiving plate C is provided on the inner side of the receiving plate B. A receiving groove is opened on the outer side of the receiving plate C. A sliding groove C is opened on the inner wall of the receiving groove. Movable shafts are fixedly connected to both sides of the movable block.

6. A stacker crane for paper-plastic cup holder production according to claim 5, characterized in that, The end of the movable shaft away from the movable block is slidably connected inside the slide groove C.

7. A stacker crane for paper-plastic cup holder production according to claim 6, characterized in that, A spring A is fixedly connected to the inner wall of the receiving plate B, and the top of the spring A is fixedly connected to the receiving plate C.

8. A stacker crane for paper-plastic cup holder production according to claim 1, characterized in that, The outer wall of the fixed plate is equipped with a protective assembly, which includes a movable rod that slides through the fixed plate. The two ends of the movable rod are fixedly connected to a movable plate and a fixed ring. Two inclined slots are formed at the upper end of the movable plate. A rotating rod is rotatably connected to the inner side of the outer wall of the fixed plate. A protective plate is fixedly connected to the outer wall of the rotating rod. One end of the rotating rod passes through the fixed plate and is fixedly connected to a rectangular frame. A limiting plate is fixedly connected to the outer wall of the fixed plate. A translation rod slides along the inner side of the limiting plate. Sliding shafts C and D are fixedly connected to the two ends of the translation rod, respectively. A push block is fixedly connected to the side of the receiving plate A.

9. A stacker crane for paper-plastic cup holder production according to claim 8, characterized in that, The sliding shaft C is slidably connected inside the inclined groove, and the sliding shaft D is slidably connected inside the rectangular frame.

10. A stacker crane for producing paper-plastic cup holders according to claim 9, characterized in that, A spring B is fixedly connected between the fixing plate and the fixing ring. The support plate has slots on both sides, and the protective plate is movably connected inside the slots.

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