A new type of pallet lifting device

Abstract

The present invention discloses a novel tray lifting device, which includes a frame. A working platform is provided at the top of the frame. A lifting drive mechanism is installed on the working platform. The pallet is located directly above the working platform, and the lifting drive mechanism is connected to the bottom end of the pallet. A tray is placed on the top end of the pallet, and a plurality of self-locking mechanisms are provided on the pallet. The self-locking mechanism includes a mounting seat, which is fixedly installed on the side of the pallet. The self-locking member is rotatably connected to the mounting seat through a rotating shaft. The top end of the self-locking member extends inward to form a limiting end. A driving component is provided at the bottom end of the self-locking member. Under the action of the driving component, the self-locking member rotates along the rotating shaft and switches between a self-locking state and an open state. When the self-locking member is in the self-locking state, the limiting end is located above the tray. When the self-locking member is in the open state, the limiting end is staggered from the tray. Its structural design is reasonable, stable and reliable. By adopting a mechanical self-locking mechanism, the structure is stable and reliable, effectively improving the stability during tray lifting and avoiding the risk of failure.

Description

Technical Field

[0001] The present invention relates to the technical field of production line auxiliary processing equipment, and particularly relates to a novel tray lifting device. Background Art

[0002] In the production assembly lines of fields such as automobiles, electronics, and aerospace, it is necessary to use trays with lifting functions (i.e., tray lifting devices) to meet the assembly requirements of product components.

[0003] When the existing tray lifting device is in use, the tray is movably matched with the positioning pins on the lifting drive device. When the cylinder in the lifting drive device drives the tray to lift or when it reaches the lifting position, the impact force generated is likely to cause the tray to jump upward, and the tray disengages from the positioning pins on the lifting drive device, resulting in an offset between the tray and the lifting drive device, and it is impossible to accurately position the product components on the tray. Seriously, the tray and the product components placed above it will fall off the lifting drive device, causing serious equipment failures.

[0004] In order to reduce the occurrence frequency of the above-mentioned faults, in the prior art, only the lifting speed of the cylinder in the lifting drive device can be manually reduced, which affects the processing rate of the production assembly line and wastes a lot of manpower. Summary of the Invention

[0005] In order to solve the problems existing in the above background art, the present invention provides a novel tray lifting device, which has a reasonable structure, is stable and reliable, adopts a mechanical self-locking mechanism, is stable and reliable in structure, effectively improves the stability when the tray is lifted, avoids the risk of faults, and ensures the processing rate of the production assembly line.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a novel tray lifting device, including a frame. A working platform is provided at the top of the frame. A lifting drive mechanism is installed on the working platform. A tray is located directly above the working platform, and the drive end of the lifting drive mechanism is connected to the bottom end of the tray. The tray is placed on the top end of the tray, and a plurality of self-locking mechanisms are provided on the tray.

[0008] The self-locking mechanism includes a mounting base, a self-locking member, a limiting end, and a driving assembly. The mounting base is fixedly installed on the side of the pallet. The self-locking member is rotatably connected to the mounting base through a rotating shaft. The top end of the self-locking member extends inward to form a limiting end. A driving assembly is provided at the bottom end of the self-locking member. Under the action of the driving assembly, the self-locking member rotates along the rotating shaft and switches between a self-locking state and an open state. When the self-locking member is in the self-locking state, the limiting end is located above the tray. When the self-locking member is in the open state, the limiting end is offset from the tray. The driving assembly includes a roller, an elastic member, and a guiding block. An elastic member is connected between the self-locking member and the mounting base. A roller is rotatably installed inside the bottom end of the self-locking member. The guiding block is provided at the corresponding position on the working platform relative to the self-locking member. The guiding surface is provided on the upper part of the side of the guiding block facing the self-locking member. The guiding surface is an inclined surface that is smaller at the top and larger at the bottom. The roller is in movable contact with the guiding surface.

[0009] Through the cooperative action of the roller, elastic member, and guiding block in the driving assembly, no additional external power is required during use, and the structure is stable and reliable. When it is necessary to lift the tray, the lifting driving mechanism drives the pallet and the tray to rise. At this time, the roller rolls upward along the guiding surface. Under the elastic force of the elastic member, the self-locking member rotates along the rotating shaft and gradually approaches the side of the pallet until the roller disengages from the guiding surface. At this time, the limiting end on the self-locking member is located above the tray (i.e., in the lifting self-locking state), limiting the top end of the tray during the lifting process and effectively improving the stability of the tray during lifting. When it is necessary to lower the tray, the lifting driving mechanism drives the pallet and the tray to descend. The roller contacts the guiding surface and rolls downward. The self-locking member rotates along the rotating shaft and gradually moves away from the side of the pallet. At this time, the elastic member is in a stretched state until the limiting end on the self-locking member is offset from the tray (i.e., in the descending open state). At this time, it does not affect the subsequent operation of installing product components on the tray.

[0010] A further improvement lies in that a limiting hole for inserting the top end of the guiding block is opened at the bottom end of the pallet. Through this setting, when the tray is lowered, the cooperation between the guiding block and the limiting hole can limit the descending position of the tray and the pallet, prevent the roller from disengaging from the guiding surface, and ensure the normal operation of the self-locking mechanism.

[0011] A further improvement lies in that a limiting member is provided on the side of the self-locking member facing the pallet. The end of the limiting member is in movable contact with the side of the mounting base. Through this setting, when the tray is lifted, the limiting member can prevent the self-locking member from directly colliding with the side of the pallet and protect the self-locking member.

[0012] A further improvement is that an elastic buffer pad is provided at the bottom of the limit end. When the pallet is being lifted or lifted into place, it is easy to jump upward. By providing the elastic buffer pad, the pallet is cushioned when it contacts the bottom of the limit end, thereby protecting the pallet.

[0013] A further improvement is that positioning members are installed at the four corners of the top of the support plate, and the tray is provided with positioning holes for the positioning members to move through. The positioning members on the support plate cooperate with the positioning holes on the tray to achieve fixed positioning of the tray and facilitate removal of the tray from the tray.

[0014] A further improvement is that the lifting drive mechanism includes a mounting frame and a cylinder, the cylinder is fixedly mounted on the working platform via the mounting frame, and the cylinder is drivingly connected to the bottom end of the support plate.

[0015] A further improvement is that the mounting frame is further provided with two guide sleeves, located on opposite sides of the cylinder. A guide post is movably disposed within the guide sleeve, the top end of which is connected to the bottom end of the support plate. The guide post and guide sleeve cooperate to guide the cylinder-driven lifting of the support plate, ensuring a more stable lifting process for the support plate and the pallet.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, under the cooperation of the mounting seat, self-locking part, limit end and driving assembly in the self-locking mechanism, the driving assembly drives the self-locking part to rotate with the rotating shaft as the fulcrum, and freely switches between the self-locking state and the open state. When the lifting drive device drives the support plate and the pallet to rise, at this time, the limit end on the self-locking part is located above the pallet (that is, it is in the lifting self-locking state), which limits the top end of the pallet during the lifting process, effectively improving the stability of the pallet during lifting; when the lifting drive device drives the support plate and the pallet to descend, at this time, the limit end on the self-locking part is staggered with the pallet (that is, it is in the descending open state), which does not affect the subsequent operation of installing product components on the pallet; the device has a reasonable structural design and adopts a mechanical self-locking mechanism. It is stable and reliable when used, effectively improving the stability of the pallet during lifting, avoiding the risk of failure, and ensuring the processing rate of the production assembly line. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a three-dimensional diagram of the novel pallet lifting device of the present invention in the lifting and self-locking state;

[0020] Figure 2This is the front view of the new tray lifting device in the lifting and self-locking state of the present invention;

[0021] Figure 3 This is the side view of the new tray lifting device in the lifting and self-locking state of the present invention;

[0022] Figure 4 This is the perspective view of the new tray lifting device in the descending and open state of the present invention;

[0023] Figure 5 This is the structural schematic diagram of the tray of the present invention;

[0024] Among them, the specific reference numerals are: frame 1, working platform 2, mounting frame 3, lifting drive mechanism 4, guide sleeve 5, guide post 6, pallet 7, positioning member 8, tray 9, positioning hole 10, self-locking mechanism 11, mounting seat 12, self-locking member 13, rotating shaft 14, limiting end 15, elastic buffer pad 16, limiting member 17, drive assembly 18, roller 19, elastic member 20, guide block 21, guide surface 22. Detailed implementation manners

[0025] The embodiment of the present invention discloses a new tray lifting device, as Figures 1 to 5As shown, it includes a frame 1, a working platform 2 is provided on the top of the frame 1, a mounting frame 3 is provided on the working platform 2, a lifting drive mechanism is fixedly installed on the mounting frame 3, and the lifting drive mechanism 4 in this embodiment is a cylinder. In actual use, the lifting drive mechanism 4 can also adopt other components with lifting drive functions. The support plate 7 is located just above the working platform 2, and the output end of the lifting drive mechanism 4 is connected to the bottom end of the support plate 7. A tray 9 is placed on the top of the support plate 7, and a plurality of self-locking mechanisms 11 are provided on the support plate 7. In this embodiment, four self-locking mechanisms 11 are provided, which are distributed at the four corners of the support plate 7; the self-locking mechanism 11 includes It includes a mounting seat 12, a self-locking member 13, a limit end 15 and a drive assembly 18. The mounting seat 12 is fixedly installed on the side of the support plate 7. The self-locking member 13 is rotatably connected to the mounting seat 12 through a rotating shaft 14. The top of the self-locking member 13 extends inward to form a limit end 15. A drive assembly 18 is provided at the bottom end of the self-locking member 13. Under the action of the drive assembly 18, the self-locking member 13 rotates along the rotating shaft 14 and switches between a self-locking state and an open state; when the self-locking member 13 is in the self-locking state, the limit end 15 is located above the tray 9, and when the self-locking member 13 is in the open state, the limit end 15 is staggered with the tray 9. Under the cooperation of the mounting seat 12, self-locking part 13, limit end 15 and driving assembly 18 in the self-locking mechanism 11, the driving assembly 18 drives the self-locking part 13 to rotate with the rotating shaft 14 as the fulcrum, and switches freely between the self-locking state and the open state. When the lifting drive device drives the support plate 7 and the tray 9 to rise, at this time, the limit end 15 on the self-locking part 13 is located above the tray 9 (that is, it is in the lifting self-locking state), which limits the top end of the tray 9 during the lifting process, effectively improving the stability of the tray 9 during lifting; when the lifting drive device drives the support plate 7 and the tray 9 to descend, at this time, the limit end 15 on the self-locking part 13 is staggered with the tray 9 (that is, it is in the descending open state), which does not affect the subsequent operation of installing product components on the tray 9.

[0026] Among them, the driving assembly 18 includes a roller 19, an elastic member 20 and a guide block 21. An elastic member 20 is connected between the self-locking member 13 and the mounting seat 12. A roller 19 is rotatably installed on the inner side of the bottom end of the self-locking member 13. A guide block 21 is provided on the working platform 2 at a position corresponding to the self-locking member 13. A guide surface 22 is provided on the upper part of the guide block 21 facing the self-locking member 13. The guide surface 22 is an inclined surface with a small upper part and a large lower part. The roller 19 is in movable contact with the guide surface 22. In this embodiment, the guide block 21 is installed on the mounting frame 3. With the help of the height of the mounting frame 3, the angle formed between the inclined surface of the guide surface 22 and the vertical direction is 15. Through the cooperation of the roller 19, the elastic member 20 and the guide block 21 in the driving assembly 18, no additional external power is required when it is used, and the structure is stable and reliable; when the tray 9 needs to be lifted, the lifting drive mechanism 4 drives the support plate 7 and the tray 9 to rise. At this time, the roller 19 rolls upward along the guide surface 22. Under the elastic force of the elastic member 20, the self-locking member 13 rotates along the rotating shaft 14 and gradually approaches the side of the support plate 7 until the roller 19 disengages from the guide surface 22. At this time, the limit end 15 on the self-locking member 13 It is located above the tray 9 (i.e. in the self-locking state during lifting), which limits the top end of the tray 9 during the lifting process, effectively improving the stability of the tray 9 during lifting; when the tray 9 needs to be lowered, the lifting drive mechanism 4 drives the support plate 7 and the tray 9 to descend, the roller 19 contacts the guide surface 22 and rolls downward, and the self-locking member 13 rotates along the rotating shaft 14 and gradually moves away from the side of the tray 7. At this time, the elastic member 20 is in a stretched state until the limit end 15 on the self-locking member 13 is offset from the tray 9 (i.e. in the lowered open state).

[0027] The bottom end of the support plate 7 is provided with a limiting hole for the top end of the guide block 21 to be inserted. By setting this arrangement, when the tray 9 is lowered, the guide block 21 cooperates with the limiting hole to limit the lowering position of the tray 9 and the support plate 7, preventing the roller 19 from separating from the guide surface 22, thereby ensuring the normal operation of the self-locking mechanism 11.

[0028] A stopper 17 is provided on the side of the self-locking member 13 facing the support plate 7, and the end of the stopper 17 is in movable contact with the side of the mounting seat 12. By setting this arrangement, when the tray 9 is lifted, the stopper 17 prevents the self-locking member 13 from colliding or directly contacting with the side of the support plate 7, thereby protecting the self-locking member 13.

[0029] Among them, the bottom end of the limit end 15 is provided with an elastic buffer pad 16. When the tray 9 is being lifted or lifted into place, it is easy to jump upward. By providing the elastic buffer pad 16, the tray 9 is buffered when contacting the bottom end of the limit end 15, thereby protecting the tray 9.

[0030] Among them, positioning members 8 are installed at the four corners of the top end of the supporting plate 7, and positioning holes 10 for the positioning members 8 to pass through movably are formed on the tray 9. Under the cooperation of the positioning members 8 on the supporting plate 7 and the positioning holes 10 on the tray 9, the fixation and positioning of the tray 9 are realized, and at the same time, it is convenient to disassemble the tray 9 from the supporting plate 7.

[0031] Among them, two guiding sleeves 5 are further arranged on the mounting frame 3. The two guiding sleeves 5 are located on the opposite sides of the air cylinder. A guiding column 6 is movably arranged inside the guiding sleeve 5, and the top end of the guiding column 6 is connected to the bottom end of the supporting plate 7. Under the cooperation of the guiding column 6 and the guiding sleeve 5, the lifting process of the supporting plate 7 driven by the air cylinder can be guided, so that the supporting plate 7 and the tray 9 are more stable during the lifting process.

[0032] In summary, the novel tray lifting device in the present invention has a reasonable structural design, adopts a mechanical self-locking mechanism 11, is stable and reliable in use, effectively improves the stability of the tray 9 during lifting, avoids the risk of failure, and ensures the processing rate of the production assembly line.

[0033] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, according to the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. A new type of tray lifting device, characterized in that, The machine comprises a frame, a working platform is provided on the top of the frame, a lifting drive mechanism is installed on the working platform, a support plate is located directly above the working platform, and the driving end of the lifting drive mechanism is connected to the bottom end of the support plate, the tray is placed on the top of the support plate, and a plurality of self-locking mechanisms are provided on the support plate; The locking mechanism comprises a mounting base, a self-locking member, a limit end, and a driving assembly, wherein the mounting base is fixedly mounted on the side surface of the support member, the self-locking member is rotatably connected to the mounting base by a rotating shaft, the top of the self-locking member extends inwardly to form a limit end, and the bottom end of the self-locking member is provided with a driving assembly. Under the action of the driving assembly, the self-locking member rotates along the rotating shaft and switches between a self-locking state and an open state; when the self-locking member is in the self-locking state, the limit end is located above the tray, and when the self-locking member is in the open state, the limit end is staggered with the tray; the driving assembly comprises a roller, an elastic member and a guide block, an elastic member is connected between the self-locking member and the mounting base, the roller is rotatably mounted on the bottom end of the self-locking member, and the working platform is provided with the guide block corresponding to the self-locking member, and the guide block is provided with a guide surface toward the upper side of the self-locking member, the guide surface has an inclined surface with a small upper portion and a large lower portion, and the roller is movably in contact with the guide surface.

2. The novel tray lifting device according to claim 1, characterized in that, The bottom end of the supporting plate is provided with a limiting hole for the top end of the guide block to be inserted.

3. The novel tray lifting device according to claim 1, wherein, The self-locking member is provided with a limiting member on one side facing the supporting plate, and the end of the limiting member is in movably contact with the side surface of the mounting seat.

4. The novel tray lifting device according to claim 1, characterized in that, An elastic buffer pad is provided at the bottom end of the limiting end.

5. The novel tray lifting device according to claim 1, wherein Positioning pieces are installed at the four corners of the top end of the support plate, and positioning holes for the positioning pieces to move through are opened on the tray.

6. The novel tray lifting device according to claim 1, wherein The lifting drive mechanism includes a mounting frame and a cylinder. The cylinder is fixedly mounted on the working platform through the mounting frame, and the cylinder is drivingly connected to the bottom end of the support plate.

7. The novel tray lifting device according to claim 6, characterized in that, Two guide sleeves are also provided on the mounting frame. The two guide sleeves are located on opposite sides of the cylinder. A guide column is movably provided inside the guide sleeve, and the top end of the guide column is connected to the bottom end of the support plate.

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