A pallet limiting mechanism

Abstract

This utility model discloses a pallet limiting mechanism, including a motion unit and a control unit. The motion unit includes a mounting base, a limiting member, and a driving member. The driving member is mounted on the mounting base, and the limiting member is slidably disposed on the mounting base and connected to the driving member. The driving member can drive the limiting member to move relative to the mounting base, so that the limiting member can form a first state of contact with the pallet and a second state of separation from the pallet. The control unit includes a distance measuring module and a processor. The distance measuring module is mounted on the mounting base and is used to detect the distance between itself and the pallet. The processor can drive the driving member to move according to the detection signal from the distance measuring module. This solves the problem in the prior art that when limiting the pallet by contact, it is impossible to determine whether the pallet is placed upside down.

Description

Technical Field

[0001] This utility model relates to the field of limiting mechanism technology, specifically to a limiting mechanism for a pallet. Background Technology

[0002] As society progresses at an accelerated pace, non-standard automation is also developing towards high efficiency and low emissions. More and more robots are using automatic screw tightening mechanisms. In order to achieve fully automatic automatic tightening by robots, a limit mechanism for automatic tightening of trays by robots has been introduced.

[0003] On the automotive production line, automated screw-tightening robots are responsible for tightening screws on components such as engines, chassis, trays, and interior trim, improving assembly efficiency and consistency. When tightening the connecting screws between the tray and the seat, the tray needs to be fixed and limited. However, in actual work, the tray may be installed in the wrong position. If this is not detected and the installation position of the tray is not adjusted in time, it will affect the assembly quality of the tray. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a pallet limiting mechanism to solve the problem that the existing technology cannot determine whether the pallet is placed upside down when it is used to limit the pallet.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a pallet limiting mechanism, including: The motion unit includes a mounting base, a limiting member, and a driving member. The driving member is mounted on the mounting base, and the limiting member is slidably disposed on the mounting base and connected to the driving member. The driving member can drive the limiting member to move relative to the mounting base so that the limiting member can form a first state of abutting against the tray and a second state of separating from the tray. The control unit includes a ranging module and a processor. The ranging module is mounted on a mounting base and is used to detect the distance between itself and the tray. The processor is capable of driving the drive component to operate based on the detection signal from the ranging module.

[0006] In some embodiments, the limiting member includes a sliding plate and two limiting plates. The sliding plate is slidably connected to the mounting base and connected to the output end of the drive member. The two limiting plates are spaced apart and parallel to each other on the sliding plate. The two limiting plates can abut against or separate from the tray.

[0007] In some embodiments, a connecting plate is also fixed between the two limiting plates.

[0008] In some embodiments, the limiting member further includes at least one baffle, which is fixedly connected to the mounting base and is capable of abutting against the sliding plate.

[0009] In some embodiments, buffer blocks are provided at the ends of both limiting plates.

[0010] In some embodiments, the driving component is an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0011] In some embodiments, the ranging module is a laser ranging sensor.

[0012] In some embodiments, a lifting unit is further included, which is connected to the mounting base and is used to drive the mounting base to rise or fall.

[0013] In some embodiments, the lifting unit includes a base plate, a support plate, and a vertical rod. The base plate is provided with a plurality of lead screws, and each lead screw has two locking nuts that rotate threadedly. The support plate is slidably connected to each lead screw, and the two locking nuts on each lead screw are respectively pressed against opposite sides of the support plate. One end of the vertical rod is fixedly connected to the support plate, and the other end of the vertical rod is fixedly connected to the mounting base.

[0014] In some embodiments, the base plate has multiple connection holes.

[0015] Compared with the prior art, the pallet limiting mechanism provided by this utility model is mounted on a mounting base via a driving component. The limiting component is slidably disposed on the mounting base and connected to the driving component. The driving component can drive the limiting component to move relative to the mounting base, so that the limiting component can form a first state of contact with the pallet and a second state of separation from the pallet. A distance measuring module is mounted on the mounting base, and a processor is electrically connected to the distance measuring module and the driving component respectively. The distance between the distance measuring module and the pallet is detected by the distance measuring module. If the pallet is placed accurately, the measured value between the pallet and the distance measuring module is the same as the preset value, and the driving component can then drive the limiting component to contact the pallet. If the pallet is placed upside down, the measured value between the pallet and the ranging module will differ from the preset value. The processor will then not control the drive to move the limit device, allowing the operator to promptly detect that the pallet is in the wrong position. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a pallet limiting mechanism provided by this utility model; Figure 2 This is a structural schematic diagram of the lifting unit provided by this utility model; Figure 3 This is a schematic diagram of the motion unit provided by this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] To address the problem in existing technologies where pallet positioning mechanisms cannot determine if a pallet is placed upside down, this invention provides a pallet positioning mechanism. This mechanism can identify the pallet's placement distance and determine if it matches a preset distance. If the distance matches, the pallet is considered to be in the correct position; otherwise, it is considered to be in the wrong position, prompting the operator to adjust the pallet's placement.

[0019] Please see Figures 1-3 , Figures 1-3 A pallet limiting mechanism according to one embodiment of the present invention includes a motion unit 1 and a control unit 2. The motion unit 1 includes a mounting base 11, a limiting member 12, and a driving member 13. The driving member 13 is mounted on the mounting base 11. The limiting member 12 is slidably disposed on the mounting base 11 and connected to the driving member 13. The driving member 13 can drive the limiting member 12 to move relative to the mounting base 11, so that the limiting member 12 forms a first state of contact with the pallet and a second state of separation from the pallet. The control unit 2 includes a ranging module 21 and a processor 22. The ranging module 21 is mounted on the mounting base 11 and is used to detect the distance between itself and the pallet. The processor 22 is electrically connected to the ranging module 21 and the driving member 13 respectively. The processor can drive the driving member to move according to the detection signal of the ranging module. In actual use, the tray is positioned on one side of the robot's automatic tightening mechanism (not shown in the figure) using a limiting mechanism. The tray is then placed on the seat. The distance measuring module 21 measures the distance between itself and the side of the tray. If the tray is placed accurately, the measured value between the tray and the distance measuring module 21 is the same as the preset value. The processor 22 then controls the drive component 13 to drive the limiting component 12 to abut against the tray, thus fixing the tray in place. The robot's automatic tightening mechanism then tightens the screws to fix the tray to the seat. If the tray is placed upside down, the measured value between the tray and the distance measuring module 21 is different from the preset value. The processor 22 will not control the drive component 13 to move the limiting component 12, and the operator can promptly detect that the tray is placed upside down.

[0020] It should be noted that the limiting member 12 is not limited to a specific structure. As long as it can abut against the tray placed on the seat and limit the tray, no other limitations are made here.

[0021] In one embodiment, the limiting member 12 includes a sliding plate 121 and two limiting plates 122. The sliding plate 121 is slidably connected to the mounting base 11 and connected to the output end of the driving member 13. The two limiting plates 122 are spaced apart and parallel to each other on the sliding plate 121. The two limiting plates 122 can abut against or separate from the tray.

[0022] It is understood that the mounting base 11 is provided with two slide rails spaced apart, and the slide plate 121 is provided with two slide grooves that cooperate with the two slide rails respectively. When the driving member 13 drives the slide plate 121 to move relative to the mounting base 11, it drives the two limiting plates 122 to move, and the two limiting plates 122 can abut or separate from one side of the tray.

[0023] Based on the above scheme, in order to improve the structural strength of the limiting member 12, a connecting plate 123 is also fixed between the two limiting plates 122.

[0024] It should be noted that, in one embodiment, the limiting member 12 further includes at least one baffle 124, the baffle 124 being fixedly connected to the mounting base 11, and the baffle 124 being able to abut against the sliding plate 121.

[0025] It is understandable that by setting the baffle 124, the two limit plates 122 will not overshoot and damage the pallet, thus ensuring the installation quality of the pallet.

[0026] Based on the above solution, to prevent damage to the pallet when the two limiting plates 122 abut against it, specifically, buffer blocks 125 are provided at the ends of both limiting plates 122. It should be noted that the buffer blocks 125 are elastic rubber buffer blocks.

[0027] It should be noted that, in one embodiment, the driving component 13 is an electric cylinder; of course, in other embodiments, the driving component 13 may also be a pneumatic cylinder or a hydraulic cylinder.

[0028] It should be noted that, in one embodiment, the ranging module 21 is a laser ranging sensor, which can accurately measure the distance to the tray to determine whether the tray is placed upside down.

[0029] In other embodiments, the control unit 2 further includes an alarm, which is electrically connected to the processor 22. When the tray is reversed, the processor 22 can also control the alarm to sound an alarm. Specifically, the alarm can be a buzzer or a flashing light.

[0030] Specifically, the processor 22 is not limited to a specific model. In one embodiment, the processor 22 is an AI8051U-34K64-QFP48 processor.

[0031] Based on the above scheme, in order to facilitate the adjustment of the position and height of the motion unit 1, a lifting unit 3 is specifically included. The lifting unit 3 is connected to the mounting base 11 and is used to drive the mounting base 11 to rise or fall.

[0032] It should be noted that the lifting unit 3 is not limited to a specific structure, as long as it can drive the motion unit 1 to lift, and no other limitations are made here.

[0033] In one embodiment, the lifting unit 3 includes a base plate 31, a support plate 32, and a vertical rod 33. The base plate 31 is provided with a plurality of lead screws 311, and each lead screw 311 has two locking nuts 312 for threaded rotation. The support plate 32 is slidably connected to each lead screw 311, and the two locking nuts 312 on each lead screw 311 are respectively pressed against opposite sides of the support plate 32. One end of the vertical rod 33 is fixedly connected to the support plate 32, and the other end of the vertical rod 33 is fixedly connected to the mounting base 11.

[0034] In this specific embodiment, there are four lead screws 311, which are located at the four top corners of the base plate 31. When the height of the support plate 32 needs to be adjusted, the two locking nuts 312 on each lead screw 311 can be rotated.

[0035] It should be noted that, in one embodiment, the base plate 31 is provided with multiple connecting holes. Specifically, the base plate 31 can be fixed to the ground by using expansion screws that cooperate with the connecting holes.

[0036] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A pallet limiting mechanism, characterized in that, include: The motion unit includes a mounting base, a limiting member, and a driving member. The driving member is mounted on the mounting base, and the limiting member is slidably disposed on the mounting base and connected to the driving member. The driving member can drive the limiting member to move relative to the mounting base so that the limiting member can form a first state of abutting against the tray and a second state of separating from the tray. The control unit includes a ranging module and a processor. The ranging module is mounted on a mounting base and is used to detect the distance between itself and the tray. The processor is capable of driving the drive component to operate based on the detection signal from the ranging module.

2. The limiting mechanism for a tray according to claim 1, characterized by The limiting component includes a sliding plate and two limiting plates. The sliding plate is slidably connected to the mounting base and connected to the output end of the driving component. The two limiting plates are spaced apart and parallel to each other on the sliding plate. The two limiting plates can abut against or separate from the tray.

3. The limiting mechanism for a tray according to claim 2, characterized by A connecting plate is also fixed between the two limiting plates.

4. The limiting mechanism for a tray according to claim 2, characterized by The limiting member further includes at least one baffle, which is fixedly connected to the mounting base and can abut against the sliding plate.

5. The limiting mechanism for a tray according to claim 2, wherein Both of the limiting plates are provided with buffer blocks at their ends.

6. The limiting mechanism for a tray according to claim 2, wherein The driving component is an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

7. The limiting mechanism for a tray according to claim 1, wherein The ranging module is a laser ranging sensor.

8. The pallet limiting mechanism according to claim 2, characterized in that, It also includes a lifting unit, which is connected to the mounting base and is used to drive the mounting base to rise or fall.

9. The limiting mechanism for a tray according to claim 8, characterized by The lifting unit includes a base plate, a support plate, and a vertical rod. The base plate is provided with multiple lead screws, and each lead screw has two locking nuts for threaded rotation. The support plate is slidably connected to each lead screw, and the two locking nuts on each lead screw are respectively pressed against opposite sides of the support plate. One end of the vertical rod is fixedly connected to the support plate, and the other end of the vertical rod is fixedly connected to the mounting base.

10. The limiting mechanism for a tray according to claim 9, characterized by The base plate has multiple connection holes.

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