Floating type material hooking and feeding machine

Abstract

The invention discloses a floating type material hooking and feeding machine which comprises a feeding device, a material hooking device, a conveying device and a material taking device which are sequentially arranged. The feeding device comprises a turnover mechanism and a lifting mechanism in driving connection with the turnover mechanism. The turnover mechanism is used for bearing a material frame containing material sheets and driving the material frame to turn over; the material hooking device comprises a plurality of floating material hooking assemblies which are arranged in parallel; the floating material hooking assembly is used for making floating contact with the material pieces and hooking the material pieces out of the material frame to the conveying device. The lifting mechanism is used for driving the material frame to drive the material sheets to descend layer by layer; the conveying device is used for conveying the material sheets to the position below the material taking device from the side where the material hooking device is located. The material taking device is used for transferring the multiple material pieces on the conveying device to the next station after the distance of the multiple material pieces is changed. The material frames and the material pieces only need to be manually fed at a time, automatic operation is achieved in the whole process, and the bad problem caused by the fact that a material taking device directly takes materials from the material frames is solved.

Description

Technical Field

[0001] This invention relates to the field of loading and unloading equipment technology, and in particular to a floating hook-type loading machine. Background Technology

[0002] In the production of glass sheets for electronic products such as smartphones and tablets, the glass sheets are usually stacked in a frame and need to be removed one by one and transferred to the subsequent processing station. Currently, the industry commonly uses vacuum suction cups or mechanical grippers to directly pick up the sheets from the frame. However, due to the extremely small gaps between the glass sheets, they are prone to damage such as bumps and scratches during the picking process, resulting in a decrease in the yield of the glass sheets. Summary of the Invention

[0003] The purpose of this invention is to provide a floating hook-and-feed machine, in which the manual only needs to load the material frame and the material sheet once. The hook-and-feed device hooks out the material sheet and moves it to the conveyor device. The picking device then picks up the material from the conveyor device, changes the distance, and moves it to the next station. The whole process is automated, which solves the problem of defects caused by the picking device directly picking up the material from the material frame.

[0004] To achieve the above objectives, the following technical solution is adopted:

[0005] A floating material feeding machine includes a feeding device, a hooking device, a conveying device, and a picking device arranged sequentially. The feeding device includes a tilting mechanism and a lifting mechanism driven and connected to the tilting mechanism. The tilting mechanism carries a material frame containing material pieces and drives the material frame to tilt. The hooking device includes multiple floating hooking components arranged in parallel for simultaneously hooking multiple material pieces. The floating hooking components are used to float and contact the material pieces, hooking them out of the material frame onto the conveying device. The lifting mechanism drives the material frame to descend layer by layer, so that the floating hooking components can hook out the material pieces one by one. The conveying device transports the material pieces from one side of the hooking device to below the picking device. The picking device transfers multiple material pieces from the conveying device to the next station after changing their distance.

[0006] Preferably, the floating hook assembly includes a hook arm arranged horizontally, a hook block located at the front end of the hook arm, a hook base rotatably connected to the rear end of the hook arm, and a material sensor located in the middle of the hook arm; the hook arm and the hook base are connected via a rotating shaft; a floating buffer is installed on the hook base on the front side of the rotating shaft, and a floating angle limiting member is installed on the hook base on the rear side of the rotating shaft; the floating buffer abuts against the middle bottom of the hook arm to buffer the contact pressure between the hook arm and the material; the floating angle limiting member abuts against the rear bottom of the hook arm to adjust the floating angle range of the hook arm; the material sensor is used to sense whether the material in the material frame has descended to the correct position.

[0007] Preferably, the feeding device further includes a positioning frame rotatably connected to the flipping mechanism, and a clamping assembly for clamping and positioning the material frame; the positioning frame includes an outer frame and a plurality of partition strips arranged parallel to each other within the outer frame; the partition strips are used to separate and position two adjacent rows of material pieces; the clamping assembly includes clamps and a clamping drive for driving the clamps.

[0008] Preferably, the material handling device includes a four-axis robot, a plurality of Bernoulli suction cups disposed at the end of the four-axis robot, a variable pitch module disposed between the plurality of Bernoulli suction cups and the four-axis robot, and a robot base for mounting the four-axis robot; when the Bernoulli suction cups pick up the material, the variable pitch module is used to drive the distance between two adjacent Bernoulli suction cups to increase.

[0009] Preferably, the variable pitch module includes a variable pitch mounting plate, a variable pitch adjusting plate, and a variable pitch driving component for driving the variable pitch adjusting plate to move up and down relative to the variable pitch mounting plate; a lifting guide assembly is provided between the variable pitch mounting plate and the variable pitch adjusting plate in the vertical direction; a translation guide assembly is provided between each Bernoulli suction cup and the variable pitch mounting plate in the horizontal direction; a variable pitch groove is provided on the variable pitch adjusting plate corresponding to each Bernoulli suction cup, and the Bernoulli suction cup is slidably connected to the variable pitch adjusting plate through the variable pitch groove; when the variable pitch driving component drives the variable pitch adjusting plate to descend, the distance between two adjacent Bernoulli suction cups increases.

[0010] Preferably, the material hooking device further includes a material hooking lifting component for driving multiple floating material hooking components to rise and fall simultaneously, and a material hooking translation component for driving multiple floating material hooking components to move back and forth simultaneously.

[0011] Preferably, the flipping mechanism includes a flipping platform and a flipping drive component for driving the flipping platform to flip; the material frame is placed inside the flipping platform; the clamping assembly is used to press the material frame against the inner wall of the flipping platform to achieve clamping and positioning of the material frame.

[0012] Preferably, each floating hook assembly has guide blocks on its two opposite outer sides.

[0013] Preferably, the conveying device includes a plurality of conveyor belt assemblies arranged in parallel, and guide side strips disposed on the outside of the conveyor belt assemblies; each conveyor belt assembly is provided with a corresponding floating hook assembly; the guide side strips are disposed along the length direction of the conveyor belt assembly.

[0014] Preferably, the lifting mechanism includes a lifting guide frame arranged in a vertical direction, and a lifting drive motor for driving the tilting mechanism to move up and down along the lifting guide frame.

[0015] By adopting the above solution, the beneficial effects of the present invention are:

[0016] This invention provides a floating hook-and-feed machine. Manual loading of the material frame and sheet is done in a single operation. The hooking device hooks the sheet out and transfers it to a conveyor. The picking device then retrieves the sheet from the conveyor, adjusts the distance, and transfers it to the next station. The entire process is automated, solving the problems caused by the picking device directly retrieving material from the frame. Furthermore, the floating hook structure allows for adaptive floating adjustments based on the sheet's actual position, effectively preventing scratches, chipping, and breakage. In a preferred embodiment, a positioning frame is used for secondary positioning of the sheet, enabling precise hooking. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is an internal perspective view of the present invention;

[0019] Figure 3 This is a perspective view of the material feeding device and conveying device of the present invention;

[0020] Figure 4 This is a perspective view of the material feeding device of the present invention;

[0021] Figure 5 This is a perspective view of the floating hook assembly of the present invention;

[0022] Figure 6 This is a perspective view of the material handling device of the present invention;

[0023] Figure 7 This is a perspective view of the variable pitch module of the present invention;

[0024] Figure 8 This is a perspective view of the feeding device of the present invention before it is flipped over;

[0025] Figure 9 This is a perspective view of the feeding device of the present invention after it has been flipped over;

[0026] The following are explanations of the labels in the attached diagram:

[0027] 1—Feeding device, 2—Hooking device,

[0028] 3—Conveying device; 4—Material handling device.

[0029] 5—Material frame, 6—Material sheet,

[0030] 11—Tilting mechanism, 12—Lifting mechanism,

[0031] 13—Positioning frame; 14—Clamping assembly.

[0032] 21—Floating hook assembly, 22—Hook lifting assembly,

[0033] 23—Hook and material translation component; 24—Guide block;

[0034] 31—Conveyor belt assembly; 32—Guide side guard strip;

[0035] 41—Four-axis robot, 42—Bernoulli suction cup,

[0036] 43—Variable pitch module; 44—Robot base;

[0037] 111—Tilting platform, 112—Tilting drive component,

[0038] 121—Lifting guide frame, 122—Lifting drive motor,

[0039] 211—Hook arm, 212—Hook block,

[0040] 213—Hook base, 214—Paper sensor,

[0041] 215—Rotation axis, 216—Floating buffer,

[0042] 217—Floating angle limiter; 431—Variable pitch mounting plate.

[0043] 432—Pitch adjustment plate, 433—Pitch drive component,

[0044] 434—Lifting guide assembly, 435—Translation guide assembly. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0048] Reference Figures 1 to 9 As shown, the present invention provides a floating material feeding machine, comprising a feeding device 1, a hooking device 2, a conveying device 3, and a picking device 4 arranged sequentially; the feeding device 1 includes a flipping mechanism 11 and a lifting mechanism 12 drivenly connected to the flipping mechanism 11; the flipping mechanism 11 is used to carry a material frame 5 containing material pieces 6 and drive the material frame 5 to flip; the hooking device 2 includes multiple floating hooking components 21 arranged in parallel, used to hook multiple material pieces 6 simultaneously; the floating hooking components 21 are used to float in contact with the material pieces 6 and hook the material pieces 6 from the material frame 5 onto the conveying device 3; the lifting mechanism 12 is used to drive the material frame 5 to lower the material pieces 6 layer by layer, so that the floating hooking components 21 can hook out the material pieces 6 one by one; the conveying device 3 is used to convey the material pieces from the side where the hooking device 2 is located to the area below the picking device 4; the picking device 4 is used to transfer the multiple material pieces 6 on the conveying device 3 to the next station after changing the distance.

[0049] The floating hook assembly 21 includes a hook arm 211 arranged horizontally, a hook block 212 located at the front end of the hook arm 211, a hook base 213 rotatably connected to the rear end of the hook arm 211, and a material sensor 214 located in the middle of the hook arm 211. The hook arm 211 and the hook base 213 are connected via a rotating shaft 215. A floating buffer 216 is installed on the hook base 213 on the front side of the rotating shaft 215, and a floating angle limiting member 217 is installed on the hook base 213 on the rear side of the rotating shaft 215. The floating buffer 216 abuts against the middle bottom of the hook arm 211 to buffer the contact pressure between the hook arm 211 and the material piece 6. The floating angle limiting member 217 abuts against the rear bottom of the hook arm 211 to adjust the floating angle range of the hook arm 211. The material sensor 214 is used to sense whether the material piece 6 in the material frame 5 has descended into place.

[0050] Furthermore, the floating buffer 216 includes a fixed column, a telescopic column movably connected to the fixed column, and an elastic element disposed between the fixed column and the telescopic column. The telescopic column can extend and retract relative to the fixed column. When the hook arm 211 presses down, the telescopic column can be elastically pressed down by the elastic element. By setting the floating buffer 216 as a support point, the hook block 212 and the hook arm 211 can float up and down under the action of the rotating shaft 215, achieving floating contact with the material piece 6 and effectively preventing fragmentation. The floating angle limiting component 217 includes an adjusting seat and an adjusting column threadedly connected to the adjusting seat. By turning the adjusting column up and down, the floating angle range can be adjusted.

[0051] When the floating hook assembly 21 hooks material from the material frame 5, if a certain column of that layer is missing a piece 6, the material sensor 214 of any floating hook assembly 21 detects a piece 6 and starts calculating the descent height, continuing to descend to half the distance of the two adjacent layers of material 6 (the distance between the upper and lower layers of material 6 is 3-5mm). If there is still a material sensor 214 that does not detect a piece 6, it is assumed that there is no piece 6 at that position and it can be ignored.

[0052] The conveying device 3 includes multiple parallel conveyor belt assemblies 31 and guide side strips 32 disposed on the outside of the conveyor belt assemblies 31; by setting the guide side strips 32, the position of the material sheet 6 is guided during conveying on the conveyor belt assemblies 31. In addition, each conveyor belt assembly 31 is provided with a corresponding floating hook assembly 21; the guide side strips 32 are arranged along the length direction of the conveyor belt assembly 31. The conveyor belt assembly 31 includes a stepper motor, a synchronous pulley, an idler pulley, and a conveyor belt, and the surface of the conveyor belt is covered with a layer of thermoplastic rubber to prevent damage to the surface of the material sheet 6.

[0053] Furthermore, each floating hook assembly 21 includes two hook arms 211, two hook blocks 212, and two hook bases 213. Each hook arm 211, hook block 212, and hook base 213 forms a group, and the two groups of hook structures are arranged in parallel. When the hook device 2 transfers the material piece 6 onto the conveyor belt assembly 31, the two groups of hook structures move so that the conveyor belt assembly 31 is positioned between the corresponding two groups of hook structures, thereby allowing the material piece 6 on the floating hook assembly 21 to fall onto the conveyor belt assembly 31.

[0054] The feeding device 1 further includes a positioning frame 13 rotatably connected to the flipping mechanism 11, and a clamping assembly 14 for clamping and positioning the material frame 5. The positioning frame 13 includes an outer frame and several partition strips arranged parallel to each other within the outer frame. The partition strips are used to separate and position two adjacent rows of material pieces 6. The clamping assembly 14 includes clamps and a clamping drive for driving the clamps. Specifically, the clamping drive is a cylinder. Further, a pressure regulating valve is installed on the clamping assembly 14 to adjust the clamping force of the clamps, while simultaneously increasing the clamp size to increase the contact area and prevent deformation of the material frame 5. Please continue to refer to... Figure 8 After the positioning frame 13 is fitted onto the sheet material, the two frames are closed to position and flatten the multi-row sheet material 6. It is worth noting that after the flipping mechanism 11 flips, the positioning frame 13 is actually positioned on the sheet material 6. However, to better illustrate the structural relationship between the positioning frame 13 and the flipping mechanism 11, please refer to [the relevant documentation / reference]. Figure 9 Positioning box 13 is in the expanded state.

[0055] The material handling device 4 includes a four-axis robot 41, a plurality of Bernoulli suction cups 42 located at the end of the four-axis robot 41, a variable pitch module 43 located between the plurality of Bernoulli suction cups 42 and the four-axis robot 41, and a robot base 44 for mounting the four-axis robot 41; when the Bernoulli suction cup 42 picks up the material piece 6, the variable pitch module 43 is used to drive the distance between two adjacent Bernoulli suction cups 42 to increase.

[0056] The variable pitch module 43 includes a variable pitch mounting plate 431, a variable pitch adjusting plate 432, and a variable pitch driving component 433 for driving the variable pitch adjusting plate 432 to rise and fall relative to the variable pitch mounting plate 431. A lifting guide assembly 434 is provided vertically between the variable pitch mounting plate 431 and the variable pitch adjusting plate 432. A translation guide assembly 435 is provided horizontally between each Bernoulli suction cup 42 and the variable pitch mounting plate 431. A variable pitch groove is formed on the variable pitch adjusting plate 432 corresponding to each Bernoulli suction cup 42, and the Bernoulli suction cup 42 is slidably connected to the variable pitch adjusting plate 432 via the variable pitch groove. When the variable pitch driving component 433 drives the variable pitch adjusting plate 432 to fall, the distance between two adjacent Bernoulli suction cups 42 increases. Further, the variable pitch driving component 4323 is a cylinder, and both the lifting guide assembly 434 and the translation guide assembly 435 include a slide rail and a slider. All translation guide components 435 share a common slide rail, and each Bernoulli suction cup 42 is connected to a slider, thereby realizing the sliding pitch of the Bernoulli suction cup 42.

[0057] The material hooking device 2 further includes a material hooking lifting assembly 22 for driving multiple floating material hooking components 21 to rise and fall simultaneously, and a material hooking translation assembly 23 for driving multiple floating material hooking components 21 to move back and forth simultaneously. Specifically, the material hooking lifting assembly 22 includes a lifting drive cylinder. The material hooking translation assembly 23 includes a translation drive motor, and the material hooking translation assembly 23 is arranged along the conveying direction of the conveying device 3.

[0058] The flipping mechanism 11 includes a flipping platform 111 and a flipping drive component 112 for driving the flipping platform 111 to flip. The material frame 5 is placed inside the flipping platform 111. The clamping assembly 14 is used to press the material frame 5 against the inner wall of the flipping platform 111 to achieve clamping and positioning of the material frame 5. The flipping drive component 112 is a servo motor, which can precisely control the flipping angle, provides sufficient material changing time, and prevents the material piece 6 from falling out at slow flipping speeds.

[0059] In addition, each floating hook assembly 21 has guide blocks 24 on its two opposite outer sides. By setting the guide blocks 24, the position of the material piece 6 on the hook arm 211 is guided.

[0060] The lifting mechanism 12 includes a lifting guide frame 121 arranged vertically, and a lifting drive motor 122 for driving the tilting mechanism 11 to move up and down along the lifting guide frame 121. Specifically, the lifting drive motor 122 is a servo motor, which can precisely control the lifting position.

[0061] The workflow of this invention is as follows:

[0062] 1) The lifting mechanism 12 drives the tilting mechanism 11 to descend to the lowest position. The manual person places the material frame filled with material piece 6 onto the tilting platform 111. The clamping assembly 14 clamps and positions the material frame 5 on the tilting platform 111.

[0063] 2) Place the positioning frame 13 on the upper outer side of the material frame 5 so that the positioning frame 5 performs secondary positioning on the material piece 6;

[0064] 3) The lifting mechanism 12 drives the flipping mechanism 11 to rise to the highest position, and then the flipping drive 112 drives the flipping platform 111 to rotate 88°, so that the material piece 6 is basically in a horizontal state and the material frame 5 faces the hooking device 2.

[0065] 4) The lifting mechanism 12 drives the flipping mechanism 11 to lower the material frame 5 to the hook position. The hook translation component 23 drives the floating hook component 21 to extend into the bottom of the material frame 5 and is located below the bottommost material piece 6.

[0066] 5) The lifting mechanism 12 continues to drive the flipping mechanism 11 to lower the material frame 5. When the material sensor 214 senses the material piece 6, it continues to descend for a certain distance and then stops descending (at this time, the floating hook assembly 21 is in contact with the material piece 6).

[0067] 6) After the material hooking and translation component 23 drives the floating material hooking component 21 to hook the material piece 6 out of the material frame 5, it is moved to the top of the conveyor belt component 31. Then the material hooking and lifting component 22 drives the floating material hooking component 21 to descend so as to place the material piece 6 on the conveyor belt component 31.

[0068] 7) The conveyor belt assembly 31 transports the sheet 6 to below the Bernoulli suction cup 42;

[0069] 8) The four-axis robot 41 drives the Bernoulli suction cup 42 to pick up the material piece 6 from the conveyor belt assembly 31, and then the variable pitch module 43 drives multiple Bernoulli suction cups 42 to increase the spacing and transfer the material piece 6 to the next station.

[0070] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. Obviously, the above embodiments of the present invention are merely examples to clearly illustrate the present invention and are not intended to limit the implementation of the present invention. For those skilled in the art, various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A floating hook-type material feeder, characterized in that, The system includes a feeding device, a hooking device, a conveying device, and a picking device arranged sequentially. The feeding device includes a tilting mechanism and a lifting mechanism driven by the tilting mechanism. The tilting mechanism carries a material frame containing material pieces and tilts the frame. The hooking device includes multiple floating hooking components arranged in parallel, used to hook multiple material pieces simultaneously. The floating hooking components make floating contact with the material pieces and hook them from the material frame onto the conveying device. The lifting mechanism drives the material frame to descend layer by layer, allowing the floating hooking components to hook out the material pieces one by one. The conveying device transports the material pieces from the side where the hooking device is located to below the picking device. The picking device transfers multiple material pieces from the conveying device to the next workstation after changing their distance.

2. The floating hook-type material feeder according to claim 1, characterized in that, The floating hook assembly includes a hook arm arranged horizontally, a hook block located at the front end of the hook arm, a hook base rotatably connected to the rear end of the hook arm, and a material sensor located in the middle of the hook arm. The hook arm and the hook base are connected via a rotating shaft. A floating buffer is installed on the hook base on the front side of the rotating shaft, and a floating angle limiting member is installed on the hook base on the rear side of the rotating shaft. The floating buffer abuts against the middle bottom of the hook arm to buffer the contact pressure between the hook arm and the material. The floating angle limiting member abuts against the rear bottom of the hook arm to adjust the floating angle range of the hook arm. The material sensor is used to sense whether the material in the material frame has descended to the correct position.

3. The floating hook-type material feeder according to claim 1, characterized in that, The feeding device further includes a positioning frame rotatably connected to the flipping mechanism, and a clamping assembly for clamping and positioning the material frame; the positioning frame includes an outer frame and several partition bars arranged parallel to each other within the outer frame; the partition bars are used to separate and position two adjacent rows of material pieces; the clamping assembly includes clamps and a clamping drive for driving the clamps.

4. The floating hook-type material feeder according to claim 1, characterized in that, The material handling device includes a four-axis robot, multiple Bernoulli suction cups located at the end of the four-axis robot, a variable pitch module located between the multiple Bernoulli suction cups and the four-axis robot, and a robot base for mounting the four-axis robot; when the Bernoulli suction cups pick up the material, the variable pitch module is used to drive the distance between two adjacent Bernoulli suction cups to increase.

5. The floating hook-type material feeder according to claim 4, characterized in that, The variable pitch module includes a variable pitch mounting plate, a variable pitch adjusting plate, and a variable pitch driving component for driving the variable pitch adjusting plate to move up and down relative to the variable pitch mounting plate; a lifting guide assembly is provided between the variable pitch mounting plate and the variable pitch adjusting plate in the vertical direction; a translation guide assembly is provided between each Bernoulli suction cup and the variable pitch mounting plate in the horizontal direction; a variable pitch groove is opened on the variable pitch adjusting plate corresponding to each Bernoulli suction cup, and the Bernoulli suction cup is slidably connected to the variable pitch adjusting plate through the variable pitch groove; when the variable pitch driving component drives the variable pitch adjusting plate to descend, the distance between two adjacent Bernoulli suction cups increases.

6. The floating hook-type material feeder according to claim 1, characterized in that, The material hooking device also includes a material hooking lifting component for driving multiple floating material hooking components to rise and fall simultaneously, and a material hooking translation component for driving multiple floating material hooking components to move back and forth simultaneously.

7. The floating hook-type material feeder according to claim 3, characterized in that, The flipping mechanism includes a flipping platform and a flipping drive component for driving the flipping platform to flip; the material frame is placed inside the flipping platform; the clamping assembly is used to press the material frame against the inner wall of the flipping platform to achieve clamping and positioning of the material frame.

8. The floating hook-type material feeder according to claim 2, characterized in that, Each floating hook assembly has guide blocks on its two opposite outer sides.

9. The floating hook-type material feeder according to claim 1, characterized in that, The conveying device includes multiple conveyor belt assemblies arranged in parallel, and guide side strips disposed on the outside of the conveyor belt assemblies; each conveyor belt assembly is provided with a corresponding floating hook assembly; the guide side strips are disposed along the length direction of the conveyor belt assembly.

10. The floating hook-type material feeder according to claim 1, characterized in that, The lifting mechanism includes a lifting guide frame arranged in a vertical direction, and a lifting drive motor for driving the tilting mechanism to move up and down along the lifting guide frame.

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