Tray jacking positioning mechanism

Abstract

The utility model belongs to the technical field of jacking positioning mechanism, especially relate to a tray jacking positioning mechanism, including hollow mounting seat, jacking plate and buffer structure, the inner chamber of hollow mounting seat is equipped with thin type air cylinder, a plurality of linear bearings and the bearing bar of sliding fit with linear bearing, buffer structure includes the several cylindrical elastomers of jacking plate top. When receiving the material, thin type air cylinder drives jacking plate to rise in vertical direction through piston rod, the top surface of jacking plate is indirectly contacted with the bottom surface of tray through buffer structure, positioning pin inserts the positioning hole in tray, utilizes indirect contact to avoid the top surface of jacking plate to wear and tear in the working process, is favorable to improve the service life of jacking plate, and utilizes buffer structure to buffer the impact force of piston rod and pushes out, and then greatly reduces the position deviation of tray due to vibration, is favorable to improve the positioning accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting and positioning mechanisms, and particularly relates to a pallet lifting and positioning mechanism. Background Technology

[0002] Automated production equipment uses a conveyor line to transport pallets to be assembled and pressed in a straight horizontal direction. When a pallet at a workstation needs to be assembled and pressed, a cylinder drives a lifting plate to lift the pallet vertically away from the original conveyor line. However, during the lifting process, the top surface of the lifting plate is in direct contact with the bottom surface of the pallet. This structure has the following drawbacks: the impact force of the lifting can easily damage the top surface of the lifting plate or the bottom surface of the pallet, affecting the life of the lifting plate and the appearance of the pallet. On the other hand, the impact force of the lifting can easily cause the pallet to vibrate on the lifting plate, thereby affecting the positioning accuracy. Utility Model Content

[0003] The purpose of this utility model is to provide a pallet lifting and positioning mechanism, which aims to solve the technical problems in the prior art.

[0004] To achieve the above objectives, this utility model provides a pallet lifting and positioning mechanism, including a hollow mounting base, a lifting plate, and a buffer structure. The hollow mounting base has a thin cylinder, several linear bearings, and bearing rods that slide with the linear bearings. The piston rod of the cylinder is fixedly connected to the bottom of the lifting plate, and the top of the bearing rod is fixedly connected to the bottom of the lifting plate. The buffer structure includes several columnar elastic bodies on the top of the lifting plate, and a positioning pin is provided on the top of the lifting plate. The height of the positioning pin is equal to the height of the columnar elastic bodies.

[0005] Optionally, the columnar elastomer is made of rubber.

[0006] Optionally, the columnar elastomer is coaxially provided with a through hole.

[0007] Optionally, four columnar elastomers are provided, and the four columnar elastomers are arranged in a diamond array on the top of the lifting plate.

[0008] Optionally, it also includes a pair of reflective switches and a pair of mounting brackets. The lifting plate has a hollow groove between the two columnar elastomers, and the reflective switch is mounted on the hollow groove through the mounting bracket.

[0009] Optionally, there are two positioning pins, one of which has a circular column at the top and the other has a polygonal column at the top.

[0010] Optionally, it also includes an oil receiving shell, and there are four linear bearings and bearing rods in total, with the bottom ends of two bearing rods respectively fixedly connected to the bottom wall of the inner cavity of the oil receiving shell.

[0011] Optionally, it also includes a pair of locking screws, which are fixed to the oil receiving shell with a gap between their top ends and the bottom wall of the inner cavity of the hollow mounting base.

[0012] Optionally, the bottom wall of the inner cavity of the hollow mounting base is provided with a clearance groove for avoiding the bottom end of the stop screw.

[0013] Optionally, it also includes a blocking buffer cylinder, which is located on the outer top of the hollow mounting base and its block faces the material infeed direction of the conveyor line.

[0014] The pallet lifting and positioning mechanism provided in this utility model embodiment has at least one of the following technical effects: When material is received, the thin cylinder drives the lifting plate to rise vertically through the piston rod. The top surface of the lifting plate indirectly contacts the bottom surface of the pallet through the buffer structure, and the positioning pin is inserted into the positioning hole in the pallet. The indirect contact avoids wear on the top surface of the lifting plate during operation, which helps to improve the service life of the lifting plate. Furthermore, the buffer structure buffers the impact force pushed out by the piston rod, thereby greatly reducing the positional deviation of the pallet caused by vibration, which helps to improve the positioning accuracy. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the pallet lifting and positioning mechanism provided in an embodiment of this utility model.

[0017] Figure 2 for Figure 1 One of the schematic diagrams of the longitudinal section.

[0018] Figure 3 for Figure 1 The second schematic diagram of the longitudinal section.

[0019] The following are the labeling elements in the figure:

[0020] 1—Hollow mounting base; 11—Thin cylinder; 12—Linear bearing

[0021] 13—Bearing rod 14—Oil housing 15—Stop screw

[0022] 16—Air vent groove 17—Blocking buffer cylinder

[0023] 2—Lifting plate 21—Buffer structure 211—Through hole

[0024] 22—Positioning pin; 23—Reflective switch; 24—Mounting bracket

[0025] 25—Hollowed-out groove. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, 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 this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0030] In one embodiment of this utility model, such as Figures 1-3As shown, a pallet lifting and positioning mechanism is provided, including a hollow mounting base 1, a lifting plate 2, and a buffer structure 21. The inner cavity of the hollow mounting base 1 is provided with a thin cylinder 11, a plurality of linear bearings 12, and a bearing rod 13 that slides with the linear bearings 12. The piston rod of the cylinder is fixedly connected to the bottom of the lifting plate 2, and the top end of the bearing rod 13 is fixedly connected to the bottom of the lifting plate 2. The buffer structure 21 includes a plurality of columnar elastic bodies on the top of the lifting plate 2. The top of the lifting plate 2 is provided with a positioning pin 22, the height of which is equal to the height of the columnar elastic bodies. When materials arrive, the thin cylinder 11 drives the lifting plate 2 to rise vertically via the piston rod. The top surface of the lifting plate 2 indirectly contacts the bottom surface of the pallet through the buffer structure 21, and the positioning pin 22 is inserted into the positioning hole in the pallet. The indirect contact avoids wear on the top surface of the lifting plate 2 during operation, which helps to improve the service life of the lifting plate 2. Furthermore, the buffer structure 21 buffers the impact force of the piston rod, thereby greatly reducing the positional deviation of the pallet caused by vibration and improving positioning accuracy. Specifically, this embodiment also provides a belt conveyor device (not shown in the figure). The belt conveyor device has a pair of conveyor belts acting on the bottom surface of the pallet. The hollow mounting base 1 is located between the pair of conveyor belts. In the conveying state, the top surface of the buffer structure 21 and the top of the positioning pin 22 are respectively lower than the conveying plane of the conveyor belt. Several pallet lifting and positioning mechanisms are arranged in a straight line along the straight conveying direction of the belt conveyor device, and their blocking buffer cylinder 17 acts on the pallet on the pallet lifting and positioning mechanism located at the previous station.

[0031] In one embodiment of this utility model, such as Figures 1-3 As shown, the columnar elastomer is made of rubber. The columnar elastomer has a through hole 211 coaxially formed, reducing the contact area between the columnar elastomer and the bottom surface of the tray, which helps to increase pressure and improve support strength. There are four columnar elastomers in total, arranged in a rhomboid array on the top of the lifting plate 2.

[0032] In one embodiment of this utility model, such as Figures 1-3 As shown, it also includes a pair of reflective switches 23 and a pair of mounting brackets 24. The lifting plate 2 has a hollow groove 25 between the two columnar elastic bodies, and the reflective switch is mounted on the hollow groove 25 through the mounting bracket 24. The pair of reflective switches 23 are used to monitor whether the tray is in place, thus achieving a positioning effect.

[0033] In one embodiment of this utility model, such as Figures 1-3 As shown, there are two positioning pins 22. One positioning pin 22 has a circular columnar top, and the other positioning pin 22 has a polygonal columnar top. The two positioning pins 22 with different top shapes cooperate with the positioning holes of the tray to achieve a foolproof effect.

[0034] In one embodiment of this utility model, such as Figures 1-3 As shown, it also includes an oil receiving shell 14. Four linear bearings 12 and bearing rods 13 are provided in total. The bottom ends of two bearing rods 13 are respectively fixedly connected to the bottom wall of the inner cavity of the oil receiving shell 14. The inner hole of the linear bearing 12 is filled with lubricating oil. Utilizing the inner cavity of the oil receiving shell 14 to collect the lubricating oil dripping during operation helps improve the cleanliness of the working environment.

[0035] In one embodiment of this utility model, such as Figures 1-3 As shown, it also includes a pair of stop screws 15. The stop screws 15 are fixed on the oil receiving shell 14, and their top ends are left with a gap between the top end and the bottom wall of the inner cavity of the hollow mounting base 1. The bottom wall of the inner cavity of the oil receiving shell 14 has a threaded hole that is threaded to engage with the stop screws 15. The gap is the maximum lifting stroke of the lifting plate 2. The size of the gap can be adjusted by tightening the stop screws 15 to adjust the height limit stroke.

[0036] In one embodiment of this utility model, such as Figures 1-3 As shown, the bottom wall of the inner cavity of the hollow mounting base 1 is provided with a clearance groove 16 to allow the bottom end of the stop screw 15 to pass through. By designing the clearance groove 16, the length of the stop screw 15 in the axial direction is increased, further widening the adjustable range of the height limit stroke.

[0037] In one embodiment of this utility model, such as Figures 1-3 As shown, it also includes a blocking buffer cylinder 17, which is located on the outer top of the hollow mounting base 1, and its block faces the material inlet direction of the conveyor line.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pallet lifting and positioning mechanism, characterized in that, The device includes a hollow mounting base, a lifting plate, and a buffer structure. The hollow mounting base has a thin cylinder, several linear bearings, and bearing rods that slide with the linear bearings. The piston rod of the cylinder is fixedly connected to the bottom of the lifting plate, and the top of the bearing rod is fixedly connected to the bottom of the lifting plate. The buffer structure includes several columnar elastic bodies on the top of the lifting plate. The top of the lifting plate is provided with a positioning pin, and the height of the positioning pin is equal to the height of the columnar elastic bodies.

2. The pallet lifting and positioning mechanism according to claim 1, characterized in that, The columnar elastomer is made of rubber.

3. The pallet lifting and positioning mechanism according to claim 1, characterized in that, The columnar elastomer has a through hole coaxially.

4. The pallet lifting and positioning mechanism according to claim 1, characterized in that, There are four columnar elastomers, which are arranged in a diamond array on the top of the lifting plate.

5. The pallet lifting and positioning mechanism according to claim 4, characterized in that, It also includes a pair of reflective switches and a pair of mounting brackets. The lifting plate has a hollowed-out groove between the two columnar elastic bodies, and the reflective switch is mounted on the hollowed-out groove through the mounting bracket.

6. The pallet lifting and positioning mechanism according to claim 1, characterized in that, The positioning pin is provided in two parts: one positioning pin has a circular column at the top and the other positioning pin has a polygonal column at the top.

7. The pallet lifting and positioning mechanism according to claim 1, characterized in that, It also includes an oil receiving shell, and there are four linear bearings and bearing rods in total. The bottom ends of two bearing rods are respectively fixedly connected to the bottom wall of the inner cavity of the oil receiving shell.

8. The pallet lifting and positioning mechanism according to claim 7, characterized in that, It also includes a pair of stop screws, which are fixed to the oil receiving shell with a gap between their top ends and the bottom wall of the inner cavity of the hollow mounting base.

9. The pallet lifting and positioning mechanism according to claim 8, characterized in that, The bottom wall of the inner cavity of the hollow mounting base is provided with a clearance groove to allow the bottom end of the stop screw to pass through.

10. The pallet lifting and positioning mechanism according to claim 1, characterized in that, It also includes a blocking buffer cylinder, which is located on the outer top of the hollow mounting base and its block faces the material inlet direction of the conveyor line.

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