Nut assembly detection mechanism

Abstract

The utility model discloses a nut assembling and detecting mechanism which comprises a discharging device, the discharging device comprises a first fixing frame, at least one pushing assembly is arranged on the first fixing frame, and each pushing assembly can be used for placing a nut and pushing the nut to move in the first direction. And the material taking device comprises a second fixing frame connected with the mechanical arm, a material taking assembly corresponding to the material pushing assembly is arranged on the second fixing frame, and the material taking assembly can be in butt joint with the corresponding material pushing assembly. And the detection device is arranged on one side of the discharging device, the detection device comprises a detection sensor corresponding to the material taking assembly, the material taking device can be driven by the mechanical arm to move to the detection device, and at the moment, the detection sensor detects the nuts on the corresponding material taking assembly. And the mechanism can accurately carry the nuts, and the problem of material leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of nut automatic processing equipment, in particular to a nut assembly detection mechanism. Background Art

[0002] Nuts are common parts on products. Many products are equipped with nuts. Therefore, in the process of product assembly, the assembly of nuts is inevitable. With the development of automation, nut assembly has also been automated. Usually, a robot is used to pick up the nuts and place them until assembly is completed. However, in this process, if the robot does not align the nut when picking up the nut, the robot will pick up the nut empty. If the robot has not discovered that the nut has not been picked up at this time, the product assembly will be abnormal, affecting the product quality. Therefore, a nut assembly detection mechanism is needed, which can improve the grasping accuracy of the robot during the nut assembly process and can remind the problem of empty picking. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide a nut assembly detection mechanism, which can accurately carry the nuts and avoid the problem of leakage.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a nut assembly detection mechanism, comprising:

[0005] A material discharge device, the material discharge device comprising a fixing frame 1, the fixing frame 1 being provided with at least one material pusher assembly, each of the material pusher assemblies being capable of placing a nut and being capable of pushing the nut to move along a first direction;

[0006] A material taking device, the material taking device comprises a second fixing frame connected to the manipulator, the second fixing frame is provided with a material taking component corresponding to the material pushing component, and the material taking component can be docked with the corresponding material pushing component;

[0007] The detection device is arranged on one side of the discharge device, and the detection device includes a detection sensor corresponding to the material picking component. The material picking device can be moved to the detection device under the drive of the manipulator, and at this time, the detection sensor detects the nut on the corresponding material picking component.

[0008] The beneficial effect of the utility model is that the nut can be accurately picked and placed through the cooperation of the pusher assembly and the picker assembly. A detection device is added, and after the picker assembly picks up the material, it moves to the position of the detection device, and the detection sensor detects whether there is a nut on each picker assembly to avoid the problem of material leakage.

[0009] Furthermore, the detection sensors are metal sensors, each of which is fixed on a fixing plate, a positioning hole for the detection sensor to pass through is formed on the fixing plate, and the detection surface of the detection sensor protrudes from the fixing plate.

[0010] Metal sensors can detect metal targets approaching the sensor without actually making contact with the target.

[0011] Specifically, the fixing plate is fixedly connected to the fixing frame 1 and is located on one side of the second direction of the fixing frame 1. The fixing plate is located close to the detection device and the discharge device, and the material picking device can quickly move to the detection device position for detection after picking up the material.

[0012] Furthermore, the pusher assembly and the picker assembly have the same structure, and each of the pusher assemblies comprises:

[0013] An ejector pin, the ejector pin is fixed to a fixing frame and extends along a first direction, and the nut can be sleeved on an end of the ejector pin;

[0014] The sliding sleeve is sleeved outside the ejector pin and can reciprocate along the ejector pin axis. During the movement, the sliding sleeve can push the nut to move along the first direction to detach from the ejector pin and sleeve onto the material taking assembly.

[0015] The structure of the ejector pin and the sliding sleeve can accurately position the nut, and there will be no positional deviation during the movement of the nut.

[0016] Furthermore, the end of the ejector pin near the material taking device is a conical structure, which facilitates the insertion of the nut and plays a guiding role for the nut.

[0017] Furthermore, the sliding sleeve of each pusher assembly is fixed on a moving plate, and a pusher driving member for pushing the moving plate to reciprocate along the first direction is fixed on the fixing frame. A pusher driving member can drive the left and right sliding sleeves to move synchronously through the moving plate.

[0018] Furthermore, at least one positioning device is included, and the positioning device is used to align the material discharging device and the material taking device, and the positioning device includes:

[0019] A positioning block, the positioning block is arranged on a fixing frame 1, and a positioning hole is provided on a side of the positioning block facing the material taking device;

[0020] A positioning cylinder is fixed on the second fixing frame and corresponds to the positioning block. The positioning cylinder includes a positioning clamping claw inserted into the positioning hole.

[0021] By setting the positioning device, the docking accuracy is improved to ensure accurate nut picking.

[0022] Furthermore, the plurality of pusher assemblies are evenly distributed along the second direction, and two positioning devices are provided, and the two positioning devices are located on both sides of the pusher assemblies in the third direction.

[0023] Reasonable use of space makes the structure more compact.

[0024] Furthermore, the detection device also includes an alarm arranged corresponding to the detection sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the discharging device and the detection device in the embodiment of the utility model;

[0027] Figure 3 It is a cross-sectional view of the discharge device in the embodiment of the utility model;

[0028] Figure 4 It is a cross-sectional view of the material taking device in the embodiment of the utility model.

[0029] In the figure:

[0030] 1. Material discharge device; 11. Fixed frame 1; 12. Material pusher assembly; 121. Ejector pin; 1211. Conical structure; 122. Sliding sleeve; 123. Moving plate; 124. Material pusher driving member;

[0031] 2. Material taking device; 21. Fixed frame 2; 22. Material taking assembly;

[0032] 3. Detection device; 31. Detection sensor; 32. Fixing plate;

[0033] 4. Nut;

[0034] 5. Positioning device; 51. Positioning block; 52. Positioning cylinder. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0036] The nut assembly detection mechanism of the utility model is used for feeding nuts and performing nut detection during the feeding process, ensuring that the nuts have been taken during each feeding process to avoid leakage. It includes:

[0037] See attached Figure 1As shown, the nut 4 assembly detection mechanism includes a placing device 1, a picking device 2 and a detection device 3. The placing device 1 is used to place the nut 4, the picking device 2 is used to pick up the nut 4 on the placing device 1, and the detection device 3 is used to detect whether the picking device 2 has picked up the nut 4.

[0038] See attached Figure 1 and attached Figure 2 As shown, the discharge device 1 includes a fixed frame 11, on which at least one pushing assembly 12 is arranged, and each of the pushing assembly 12 can be placed with a nut 4 and can push the nut 4 to move along the first direction (X direction). The picking device 2 includes a fixed frame 21 connected to a manipulator (not shown in the figure), on which a picking assembly 22 corresponding to the pushing assembly 12 is arranged, and the picking assembly 22 can dock with the corresponding pushing assembly 12. The detection device 3 is arranged on one side of the discharge device 1, and the detection device 3 includes a detection sensor 31 corresponding to the picking assembly 22. The picking device 2 can move to the detection device 3 under the drive of the manipulator, and at this time, the detection sensor 31 detects the nut 4 on the corresponding picking assembly 22.

[0039] In this embodiment, the nut 4 can be accurately picked and placed by the cooperation of the pusher assembly 12 and the picker assembly 22. A detection device 3 is added. After the picker assembly 2 picks up the material, it moves to the position of the detection device 3, and detects whether there is a nut 4 on each picker assembly 22 through the detection sensor 31 to avoid the problem of material leakage.

[0040] In one embodiment, the detection sensors 31 are metal sensors, each of which is fixed on a fixing plate 32. The fixing plate 32 is provided with a positioning hole for the detection sensor 31 to pass through, and the detection surface of the detection sensor 31 protrudes from the fixing plate 32. The metal sensor can detect a metal target object approaching the sensor without actually contacting the target object.

[0041] In this embodiment, the material taking component 22 is made of plastic, and the nut 4 is a metal structure. When there is a nut 4 on the material taking component 22, it will be detected by the metal sensor when it is close to the metal sensor. When there is no nut 4 on the material taking component 22, the metal sensor will not detect metal within the detection range, which proves that the material taking component 22 has not successfully taken the material and there is a problem of material leakage.

[0042] The detection device 3 also includes an alarm device corresponding to the detection sensor 31. When the detection sensor 31 fails to detect the nut 4 during operation, the alarm device will generate an alarm.

[0043] In one embodiment, the fixing plate 32 is fixedly connected to the fixing frame 11 and is located on one side of the second direction of the fixing frame 11. The fixing plate 32 is located so that the detection device 3 and the discharge device 1 are close to each other, and the material taking device 2 can quickly move to the detection device 3 for detection after taking the material.

[0044] See attached Figure 2 and attached Figure 3 As shown, each of the pusher components 12 includes a pin 121 and a sleeve 122. The pin 121 is fixed to the fixing frame 11 and extends in the first direction, and the nut 4 can be sleeved on the end of the pin 121. The sleeve 122 is sleeved outside the pin 121 and can reciprocate along the axis of the pin 121. During the movement, the sleeve 122 can push the nut 4 to move in the first direction to disengage from the pin 121 and sleeve onto the material taking component 22. The pin 121 and the sleeve 122 are both made of plastic. On the one hand, the elasticity of the plastic is used to prevent the nut 4 from being worn during the sliding process, and on the other hand, it will not interfere with the detection sensor 31.

[0045] Initially, the nut 4 is sleeved on the end of the ejector pin 121. At this time, there is a distance between the sliding sleeve 122 and the end of the ejector pin 121 on the same side, and the nut 4 is located at this distance. Then the sliding sleeve 122 moves toward the nut 4, pushing the nut 4 to slide along the axial direction of the ejector pin 121 to disengage from the ejector pin 121 and onto the material removal assembly 22. The outer diameter of the sliding sleeve 122 is larger than the inner diameter of the nut 4, so that the sliding sleeve 122 can abut against the side wall of the nut 4 and push the nut 4 to move.

[0046] In one embodiment, see the attached Figure 3 As shown, the end of the ejector pin 121 close to the material taking device 2 is a conical structure 1211. The conical structure 1211 facilitates the sleeve connection of the nut 4 and plays a guiding role for the nut 4.

[0047] The sliding sleeve 122 of each pusher assembly 12 is fixed on a moving plate 123, and a pusher driving member 124 is fixed on the fixed frame to push the moving plate 123 to move back and forth along the first direction. A pusher driving member 124 can drive the left and right sliding sleeves 122 to move synchronously through the moving plate.

[0048] See attached Figure 4 As shown, the pusher assembly 12 and the picker assembly 22 have the same structure, and the pusher assembly 12 also includes a sliding sleeve 122 and an ejector pin 121. When the pusher assembly 12 and the picker assembly 22 are docked, the conical structures 1211 of the pusher assembly 12 and the ejector pin 121 of the picker assembly 22 abut against each other, and the pusher assembly 12 and the ejector pin 121 of the picker assembly 22 are coaxial.

[0049] The assembly detection mechanism of the nut 4 also includes at least one positioning device 5, which is used to align the material discharging device 1 and the material taking device 2. The positioning device 5 includes a positioning block 51 and a positioning cylinder 52. The positioning block 51 is arranged on the fixing frame 11, and a positioning hole is opened on the side of the positioning block 51 facing the material taking device 2. The positioning cylinder 52 is fixed on the fixing frame 21 and corresponds to the positioning block 51. The positioning cylinder 52 includes a positioning clamp inserted into the positioning hole.

[0050] Before the material taking device 2 takes the material, the positioning claw is first inserted into the positioning hole to realize the positioning of the fixing frame 11 and the positioning frame 2. At this time, the ejector assembly 12 and the ejector pin 121 of the material taking assembly 22 are coaxial and the docking is completed. Then, by moving the sliding sleeve 122, the nut 4 on the material pushing assembly 12 is pushed onto the material taking assembly 22 to realize the material taking of the material taking device 2. By setting the positioning device 5, the docking accuracy is improved to ensure the accurate material taking of the nut 4.

[0051] In one embodiment, the plurality of pusher assemblies 12 are evenly distributed along the second direction (Z direction), and two positioning devices 5 are provided, and the two positioning devices 5 are located on both sides of the pusher assemblies 12 in the third direction (Y direction).

[0052] In this embodiment, four material pushing components 12 are provided, and at this time, four material taking components 22 and detection sensors 31 are also provided correspondingly.

[0053] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. Nut assembly detection mechanism, characterized in that: include: A material discharge device, the material discharge device comprising a fixing frame 1, the fixing frame 1 being provided with at least one material pusher assembly, each of the material pusher assemblies being capable of placing a nut and being capable of pushing the nut to move along a first direction; A material taking device, the material taking device comprises a second fixing frame connected to the manipulator, the second fixing frame is provided with a material taking component corresponding to the material pushing component, and the material taking component can be docked with the corresponding material pushing component; The detection device is arranged on one side of the discharge device, and the detection device includes a detection sensor corresponding to the material picking component. The material picking device can be moved to the detection device under the drive of the manipulator, and at this time, the detection sensor detects the nut on the corresponding material picking component.

2. The nut assembly detection mechanism according to claim 1, characterized in that: The detection sensors are metal sensors, each of which is fixed on a fixing plate. The fixing plate is provided with a positioning hole for the detection sensor to pass through, and the detection surface of the detection sensor protrudes from the fixing plate.

3. The nut assembly detection mechanism according to claim 2, characterized in that: The fixing plate is fixedly connected to the fixing frame 1 and is located at one side of the fixing frame 1 in the second direction.

4. The nut assembly detection mechanism according to claim 1, characterized in that: The pusher assembly and the taker assembly have the same structure, and each pusher assembly comprises: An ejector pin, the ejector pin is fixed to a fixing frame and extends along a first direction, and the nut can be sleeved on an end of the ejector pin; The sliding sleeve is sleeved outside the ejector pin and can reciprocate along the ejector pin axis. During the movement, the sliding sleeve can push the nut to move along the first direction to detach from the ejector pin and sleeve onto the material taking assembly.

5. The nut assembly detection mechanism according to claim 4, characterized in that: The end of the ejector pin close to the material taking device is a conical structure.

6. The nut assembly detection mechanism according to claim 4, characterized in that: The sliding sleeve of each of the pushing components is fixed on a moving plate, and a pushing driving member for pushing the moving plate to move back and forth along a first direction is fixed on the fixing frame.

7. The nut assembly detection mechanism according to claim 1, characterized in that: It also includes at least one positioning device, which is used to align the material discharging device and the material taking device, and the positioning device includes: A positioning block, the positioning block is arranged on a fixing frame 1, and a positioning hole is provided on a side of the positioning block facing the material taking device; A positioning cylinder is fixed on the second fixing frame and corresponds to the positioning block. The positioning cylinder includes a positioning clamping claw inserted into the positioning hole.

8. The nut assembly detection mechanism according to claim 7, characterized in that: The plurality of pusher assemblies are evenly distributed along the second direction, and two positioning devices are provided, and the two positioning devices are located on both sides of the pusher assemblies in the third direction.

9. The nut assembly detection mechanism according to claim 2, characterized in that: The detection device also includes an alarm device arranged corresponding to the detection sensor.

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