CN218294308U

CN218294308U - Rack and automatic optical detection equipment

Info

Publication number: CN218294308U
Application number: CN202221845967.6U
Authority: CN
Inventors: 吴杜锋
Original assignee: Guangzhou Luchen Intelligent Equipment Technology Co ltd
Current assignee: Guangzhou Luchen Intelligent Equipment Technology Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2023-01-13
Anticipated expiration: 2032-07-18

Abstract

The utility model discloses a frame and automatic optical detection equipment, this frame include fixed structure subassembly and motion structure subassembly, and the motion structure subassembly includes the platform, is provided with the guide rail unit who is used for installing the optical detection unit on the first side of platform, and the second side and the fixed structure subassembly of platform are connected, and first side is relative with the second side, presss from both sides between platform and the fixed structure subassembly and is equipped with the vibration isolation pad. Through set up the vibration isolator between fixed structure subassembly and motion structure subassembly, be favorable to avoiding external vibration energy to loop through fixed structure subassembly and motion structure subassembly and transmit to optical detection unit, and then avoid optical detection unit to take place skew and shake at the collection image in-process for it is accurate to form images, in order to guarantee detection quality.

Description

Rack and automatic optical detection equipment

Technical Field

The utility model relates to an optical detection equipment technical field especially relates to a frame and contain automatic optical detection equipment of this frame.

Background

Automatic Optical Inspection (AOI) equipment is equipment for detecting common defects encountered in welding production based on Optical principles, and is commonly used in the production process of PCBA (Printed Circuit Board Assembly) boards. The existing automatic optical detection equipment mainly comprises a rack, a movement component and an optical detection unit, wherein the rack plays a role in integral support, the movement component is installed on the rack, the optical detection unit is installed on the movement component, the movement component drives the optical detection unit to move to an equipment position and photograph a PCBA board to obtain an image, and the defect is detected through image processing. The frame is formed by integral casting or integral welding, and the whole automatic optical detection equipment is rigidly connected. Therefore, when an external vibration source exists in the use environment of the equipment, the external vibration energy is transmitted to the optical detection unit through the rack and the motion assembly in sequence, and then the optical detection unit is caused to deviate and shake in the image acquisition process, so that the imaging is not accurate, and the detection quality is influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: the utility model provides a frame, through adopting split type design and installation vibration isolator, can effectively avoid external vibration to transmit to optical detection unit, and it is accurate to form an image, guarantees detection quality.

The embodiment of the utility model provides a another aim at: the automatic optical detection equipment has the advantages that the vibration isolation treatment is carried out on the rack, so that the optical detection unit can be prevented from being deviated and shaken, and the imaging stability is improved.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a frame for installation optical detection unit, including fixed structure subassembly and motion structure subassembly, the motion structure subassembly includes the platform, the platform has relative first side and second side, be provided with on the first side and be used for the installation optical detection unit's guide rail unit, the second side with fixed structure subassembly is connected, just the second side with press from both sides between the fixed structure subassembly and be equipped with the vibration isolator.

As a preferable scheme of the rack, the fixing structure assembly includes a bottom plate, a plurality of upright posts are arranged at intervals on one side surface of the bottom plate facing the platform, and the vibration isolating pad is arranged at a position of the second side surface corresponding to the upright posts.

As a preferred scheme of the rack, a plurality of base plates are arranged on one side face, facing the platform, of the fixed structure assembly, the base plates correspond to the vibration isolators one to one, and the vibration isolators are clamped between the base plates and the platform.

As a preferable scheme of the rack, the upright columns are arranged at least at four corners of the bottom plate; alternatively, the first and second electrodes may be,

the upright posts are arranged at the four corners and the middle part of the bottom plate.

As a preferable scheme of the rack, the upright post is further arranged in the middle of the bottom plate.

As a preferable scheme of the rack, the fixed structure assembly further includes a foot cup, the foot cup is disposed on a side surface of the bottom plate away from the upright post, the foot cups are disposed at least at four corners of the bottom plate, and the vibration isolating pad is disposed at one end of the foot cup away from the bottom plate.

As a preferred embodiment of the frame, the fixed structural component is integrally formed.

As a preferable scheme of the frame, the vibration isolation pad is an elastic vibration isolation pad.

As a preferred embodiment of the frame, the platform and the fixed structure assembly are connected by fasteners, and the fasteners pass through the vibration isolator.

As a preferred scheme of frame, the guide rail unit includes X axle guide rail and Y axle guide rail, X axle guide rail is two, two X axle guide rail is followed the parallel and interval setting of first direction of platform, Y axle guide rail is followed first direction extends, the both ends of Y axle guide rail respectively with two X axle guide rail swing joint, and make Y axle guide rail can follow the second direction and move, first direction perpendicular to the second direction.

The utility model has the advantages that: this frame is favorable to avoiding external vibration energy to loop through fixed structure subassembly and motion structure subassembly and transmits to the optical detection unit through setting up the vibration isolator between fixed structure subassembly and motion structure subassembly, and then avoids the optical detection unit to take place skew and shake at the collection image in-process for it is accurate to form images, in order to guarantee detection quality.

The automatic optical detection equipment comprises the rack and the optical detection unit, a sliding base is movably arranged on the Y-axis guide rail of the guide rail unit, and the optical detection unit is arranged on the sliding base.

The utility model has the advantages that: this automatic optical detection equipment is through setting up the vibration isolator between fixed structure subassembly and motion structure subassembly to and set up the vibration isolator in the below of foot cup, can make outside vibration energy absorbed by the vibration isolator, and then avoid on vibration transmission to optical detection unit, avoid optical detection unit to take place skew and shake in the image acquisition in-process, promote imaging stability.

Drawings

The present invention will be described in further detail with reference to the drawings and examples.

Fig. 1 is a schematic view of a rack according to an embodiment of the present invention.

Fig. 2 is an exploded view of a frame according to an embodiment of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure:

1. a fixed structural component; 11. a base plate; 12. a column; 13. a foot cup; 14. a reinforcement; 15. a backing plate; 2. a kinematic structure component; 20. a platform; 21. an X-axis guide rail; 211. an X-axis guide rail seat; 212. an X-axis slide rail; 213. an X-axis drive member; 22. a Y-axis guide rail; 221. a Y-axis guide rail seat; 222. a Y-axis drive member; 223. a sliding base; 224. a Y-axis slide rail; 3. and a vibration isolator.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the present invention provides a frame for mounting an optical detection unit (not shown in the figure), which comprises a fixed structure component 1, a moving structure component 2 and a vibration isolation pad 3. Fixed structure subassembly 1 is installed subaerial, and moving structure subassembly 2 is installed on fixed structure subassembly 1, and vibration isolator 3 presss from both sides and establishes between fixed structure subassembly 1 and moving structure subassembly 2 to this vibration that avoids the external vibration source to produce transmits to moving structure subassembly 2 through fixed structure subassembly 1. Specifically, the moving structure assembly 2 includes a platform 20 and a rail unit, the platform 20 has a first side and a second side opposite to each other, the platform 20 is horizontally placed, the first side is located above the platform 20, and the second side is located below the platform 20. The guide rail unit is used for installing the optical detection unit, and the guide rail unit is installed on the first side of platform 20, and the guide rail unit can drive the optical detection unit motion and carry out optical detection to the PCBA board. The second side of the platform 20 is connected to the fixed structure assembly 1, the vibration isolation pad 3 is sandwiched between the platform 20 and the fixed structure assembly 1, the size of the vibration isolation pad 3 is determined by the contact surface between the platform 20 and the fixed structure assembly 1, and the vibration isolation pad 3 can cover the entire contact surface between the platform 20 and the fixed structure assembly 1. The vibration isolator 3 is the elasticity vibration isolator, and vibration isolator 3 can absorb vibration energy, and after the vibration of outside vibration source transmitted vibration isolator 3 through fixed structure subassembly 1, vibration isolator 3 absorbed vibration energy, and then avoided the vibration energy to continue to transmit to the optical detection unit along motion structure subassembly 2. It will also be appreciated that the vibration isolator 3 can absorb a significant amount of vibration energy, with a very small amount of vibration energy still being transmitted to the moving structural assembly 2, but without causing offset and jitter to the optical detection unit. This frame is favorable to avoiding external vibration energy to loop through fixed structure subassembly 1 and motion structure subassembly 2 and transmits to the optical detection unit through setting up vibration isolator 3 between fixed structure subassembly 1 and motion structure subassembly 2, and then avoids the optical detection unit to take place the skew and shake at the collection image in-process, makes the formation of image accurate, in order to guarantee detection quality.

As shown in fig. 2 and 3, the fixed structure assembly 1 includes a base plate 11 and a plurality of uprights 12, the plurality of uprights 12 being disposed on a side of the base plate 11 facing the platform 20, the uprights 12 being used to support the moving structure assembly 2. The number of the vibration insulators 3 is the same as that of the upright posts 12, and the vibration insulators 3 are located on the second side surface of the platform 20 at positions corresponding to the upright posts 12. A plurality of backing plates 15 are arranged on one side surface of the fixed structure assembly 1 facing the platform 20 at intervals, the number of the backing plates 15 is the same as that of the stand columns 12, the plurality of backing plates 15 correspond to the plurality of vibration isolators 3 one by one, namely, one backing plate 15 and one vibration isolator 3 are arranged at one end of each stand column 12 facing the platform 20. The vibration isolator 3 is interposed between the backing plate 15 and the platform 20. Threaded holes are formed in the top surface of the upright 12, through holes for penetrating fasteners are formed in the platform 20, in the embodiment, the fasteners are preferably screws, and the through holes in the platform 20 correspond to the threaded holes in the upright 12 one by one. The screws pass through the platform 20, the insulator 3 and the backing plate 15 in this order and are screwed to the screw holes. This connected mode makes platform 20 and stand 12 closely combine together to press from both sides the vibration isolator 3 tightly between the two, be favorable to guaranteeing that the frame keeps stable in the operation, and then guarantee detection quality. The shape of the backing plate 15 is the same as that of the vibration isolator 3, the material of the backing plate 15 is the same as that of the upright post 12, and the backing plate 15 and the upright post 12 are welded and fixed. Through setting up backing plate 15, can make interval between fixed structure subassembly 1 and the platform 20, mechanical vibration on the fixed structure subassembly 1 can only pass through backing plate 15 and vibration isolator 3 upwards transmission to be absorbed by vibration isolator 3, and then improve the separation effect of vibration isolator 3 to the vibration. At the same time, by providing the tie plate 15, the point of application of force of the platform 20 on the fixed structural assembly 1 is concentrated on the tie plate 15. The contact surface between the platform 20 and the fixed structure component 1 is reduced, and all the force points of the platform 20 on the fixed structure component 1 are controlled on the same horizontal plane.

In an alternative embodiment, the vibration isolation mounts 3 on the backing plate 15 comprise a plurality of vibration isolation mount sub-bodies distributed around the circumferential direction of the screw. For example, the vibration isolation pad 3 includes four vibration isolation pad split bodies, the four vibration isolation pad split bodies are distributed on the backing plate 15 in a shape of a Chinese character 'tian', and screws pass through gap areas between the four vibration isolation pad split bodies.

In an alternative embodiment, the number of the vibration insulators 3 on the backing plate 15 is two or more, and two or more vibration insulators 3 are stacked on the backing plate 15. That is, the vibration insulators 3 on each backing plate 15 are formed in a multi-layer structure, so that the vibration insulators 3 can absorb vibration effectively.

In one embodiment, the number of the vertical columns 12 is four, and the four vertical columns 12 are distributed at four corners of the bottom plate 11. The fixed structure component 1 is connected with the platform 20 by adopting a mode of distributing a plurality of stand columns 12 at intervals, and is favorable for reducing the contact surface between the fixed structure component 1 and the moving structure component 2 under the condition of ensuring enough supporting capability, thereby reducing the carrier of vibration transmission. At the same time, a large amount of vibration energy is dissipated by the self-mechanical vibrations of the fixed structural assembly 1. This configuration is advantageous for reducing the transfer of vibration energy to the moving structural component 2. In this embodiment, the size of the vibration insulator 3 is matched with the size of the top surface of the upright post 12.

In another embodiment, the number of the upright posts 12 is five, and the upright posts 12 are arranged at the four corners and the middle of the bottom plate 11. This configuration is advantageous in that the pressure of the moving structural member 2 is uniformly applied to each region of the bottom plate 11, thereby improving the structural stability. Of course, the specific number of columns 12 may be adaptively selected based on the overall load carrying capacity, the area of the platform 20, or the overall load distribution of the frame. As an alternative embodiment, referring to fig. 2, the number of the upright posts 12 is seven, one upright post 12 is disposed at each of four corners of the bottom plate 11, and three upright posts 12 are disposed at intervals at the middle of the bottom plate 11.

In an alternative embodiment, the fixed structural assembly 1 further comprises a reinforcement 14 and a foot cup 13. The foot cup 13 is arranged on one side surface of the bottom plate 11 departing from the upright post 12, and the foot cup 13 is used for being abutted against the ground. Four of the foot cups 13 are arranged, and the four foot cups 13 are distributed at the four corners of the bottom plate 11. The end of the foot cup 13 facing away from the bottom plate 11 is provided with a vibration isolation pad 3. It can be understood that the vibration isolator 3 is arranged on one side surface, close to the ground, of the foot cup 13, so that the transmission of external vibration to the fixed structure assembly 1 through the ground is reduced, the influence of vibration on the optical detection unit is further reduced, and the detection quality is ensured. The reinforcing members 14 serve to improve the structural strength of the columns 12, and adjacent two columns 12 are connected by the reinforcing members 14 along the length direction and the width direction of the bottom plate 11, and the reinforcing members 14 are located at one ends of the columns 12 close to the platform 20.

The fixed structure component 1 is integrally formed, and the bottom plate 11, the upright post 12 and the backing plate 15 in the fixed structure component 1 can be integrally formed by welding. Alternatively, the fixed structural component 1 is made by integral casting.

As shown with continued reference to fig. 2 and 3, the rail unit includes an X-axis rail 21 and a Y-axis rail 22. The X and Y axes are relative position coordinates of the position where the optical detection unit moves during detection, the X-axis guide rail 21 extends in the second direction of the stage 20 (the X direction shown in the drawing, or the longitudinal direction of the stage 20), and the Y-axis guide rail 22 extends in the first direction of the stage 20 (the Y direction shown in the drawing, or the width direction of the stage 20). The number of the X-axis guide rails 21 is two, and the two X-axis guide rails 21 are arranged in parallel and at intervals along the first direction of the platform 20, and it can also be understood that the two X-axis guide rails 21 are respectively located at two ends of the platform 20 in the width direction. Two ends of the Y-axis guide rail 22 are movably connected to the two X-axis guide rails 21, respectively, and enable the Y-axis guide rail 22 to move along the second direction. Specifically, the Y-axis guide rail 22 includes a Y-axis guide rail seat 221, two Y-axis slide rails 224, a Y-axis driver 222, and a slide base 223; the X-axis guide rail 21 includes an X-axis guide rail holder 211, an X-axis slide rail 212, and an X-axis driver 213. The X-axis slide rail 212 and the Y-axis slide rail 224 are guiding structures with smooth surfaces and play a guiding role. The X-axis guide rail bases 211 are fixedly arranged on the platform 20, each X-axis guide rail base 211 is provided with an X-axis slide rail 212, and two ends of the Y-axis guide rail base 221 are respectively connected with the two X-axis slide rails 212 in a sliding manner. At least one of the X-axis rail holders 211 is provided with an X-axis driver 213, and the X-axis driver 213 is connected to the Y-axis rail holder 221, so that the X-axis driver 213 drives the Y-axis rail holder 221 to slide along the length direction of the X-axis slide rail 212. Two Y-axis slide rails 224 are arranged on the Y-axis guide rail seat 221, and the two Y-axis slide rails 224 are arranged in parallel and at intervals along the vertical direction. Slide base 223 is slidably connected to Y-axis slide 224. The Y-axis driver 222 is mounted on the Y-axis rail base 221, and the Y-axis driver 222 is connected to the slide base 223 and drives the slide base 223 to slide along the length direction of the Y-axis slide rail 224. It will be appreciated that the optical detection unit is mounted on the slide base 223 by the X-axis driver 213 driving the Y-axis guide 22 to move in the second direction and by the Y-axis driver 222 driving the slide base 223 to move in the first direction, so as to realize the movement of the optical detection unit in the X-Y plane.

In this embodiment, since the X-axis guide rail 21 is installed on the platform 20, the X-axis guide rail 21 has good stability and structural rigidity, and the length of the X-axis guide rail 21 can be flexibly selected according to the length of the product to be detected (PCBA board), which is beneficial for the optical detection unit to perform long-stroke movement in the second direction. The Y-axis guide rail 22 for driving the optical detection unit to move in a short stroke is arranged above the X-axis guide rail 21, so that the overall length of the Y-axis guide rail 22 is relatively short, the overall stability and the structural rigidity of the Y-axis guide rail 22 can be ensured under the suspension condition of the middle part of the Y-axis guide rail 22, the optical detection unit is prevented from shifting and shaking in the image acquisition process, and the imaging accuracy of the optical detection unit is ensured.

Specifically, the X-axis driver 213 and the Y-axis driver 222 are of a motor-lead screw structure, that is, a lead screw is driven by a motor to rotate, and the lead screw is connected with a corresponding rail seat in a threaded manner and drives the rail seat to slide along a corresponding X-axis slide rail 212 or Y-axis slide rail 224. Of course, in other embodiments, the X-axis driver 213 and the Y-axis driver 222 may be linear motors.

Referring to fig. 3, to further improve the stability of the optical detection unit in the process of acquiring an image, two Y-axis slide rails 224 are arranged on the Y-axis rail base 221 in parallel and at an interval along the vertical direction, and the Y-axis driving member 222 includes a motor and a lead screw, and the motor is used for driving the lead screw to rotate. The lead screw is located in the middle of the two Y-axis slide rails 224. The lead screw is threadedly coupled to the sliding base 223. It can be understood that when the sliding base 223 moves along the first direction, the received resistance comes from the friction between the sliding base 223 and the two Y-axis sliding rails 224, and two resistance flows are distributed on two sides of the screw rod, which is beneficial to uniformly distributing the resistance, and avoiding the optical detection unit from shaking due to the occurrence of jamming in the moving process of the sliding base 223.

The utility model also provides an automatic optical detection equipment, including foretell frame and optical detection unit, optical detection unit installs on sliding base 223. During detection, the X-axis driving part 213 drives the Y-axis guide rail 22 to move along the second direction, and the Y-axis driving part 222 drives the sliding base 223 to move along the first direction, so that the optical detection unit moves on an X-Y axis plane, and optical detection is performed on the PCBA above the platform 20. Of course, a lifting driving member may be mounted on the sliding base 223, and the optical detection unit is driven to lift by the lifting driving member to adjust the distance between the photographing lens of the optical detection unit and the PCBA board. The automatic optical detection equipment is characterized in that the vibration isolation pad 3 is arranged between the fixed structure component 1 and the moving structure component 2, and the vibration isolation pad 3 is arranged below the foot cup 13, so that external vibration energy can be absorbed by the vibration isolation pad 3, vibration is prevented from being transmitted to the optical detection unit, the optical detection unit is prevented from being deviated and shaken in the image acquisition process, and the imaging stability is improved.

Claims

1. The rack is used for installing an optical detection unit and is characterized by comprising a fixed structure assembly and a moving structure assembly, wherein the moving structure assembly comprises a platform, the platform is provided with a first side surface and a second side surface which are opposite to each other, a guide rail unit used for installing the optical detection unit is arranged on the first side surface, the second side surface is connected with the fixed structure assembly, and a vibration isolation pad is clamped between the second side surface and the fixed structure assembly.

2. The frame according to claim 1, wherein the fixed structure assembly comprises a bottom plate, a plurality of vertical columns are arranged on one side surface of the bottom plate facing the platform at intervals, and the vibration isolation pads are arranged on the second side surface corresponding to the positions of the vertical columns.

3. The frame according to claim 2, wherein a plurality of base plates are disposed on a side of the fixed structure assembly facing the platform, the plurality of base plates correspond to the plurality of vibration isolators one-to-one, and the vibration isolators are sandwiched between the base plates and the platform.

4. The frame according to claim 2, wherein the columns are arranged at least at four corners of the bottom plate; alternatively, the first and second electrodes may be,

the upright columns are arranged at least at the four corners and the middle part of the bottom plate.

5. The frame according to claim 2, wherein the fixed structure assembly further comprises a foot cup, the foot cup is disposed on a side surface of the bottom plate facing away from the upright, the foot cup is disposed at least at four corners of the bottom plate, and the vibration isolation pad is disposed at an end of the foot cup facing away from the bottom plate.

6. The airframe as recited in any one of claims 1 to 5, wherein said fixed structural component is integrally formed.

7. The frame according to any of claims 1 to 5, wherein the vibration isolator is a resilient vibration isolator.

8. The airframe as recited in any one of claims 1 to 5, wherein said platform is attached to said fixed structure assembly by fasteners, and said fasteners pass through said isolator pad.

9. The machine frame according to any one of claims 1 to 5, wherein the guide rail unit comprises two X-axis guide rails and two Y-axis guide rails, the two X-axis guide rails are arranged in parallel and at intervals along a first direction of the platform, the Y-axis guide rails extend along the first direction, two ends of the Y-axis guide rails are movably connected with the two X-axis guide rails respectively and enable the Y-axis guide rails to move along a second direction, and the first direction is perpendicular to the second direction.

10. An automatic optical detection device, comprising the frame of any one of claims 1 to 9 and an optical detection unit, wherein a sliding base is movably arranged on the Y-axis guide rail of the guide rail unit, and the optical detection unit is mounted on the sliding base.