A pick-and-place mechanism

Abstract

The taking and placing mechanism comprises a taking and placing seat movably arranged at the rear side of the material box conveying line, a bearing plate movably connected to the taking and placing seat, and a material box pressing assembly for pressing the material box on the bearing plate. The bearing plate comprises a fork plate and a support plate. The fork plate extends horizontally forward, and the support plate is connected to the rear end of the fork plate and extends vertically upward. The material box pressing assembly is movably connected to the support plate by a lifting cylinder. The material box pressing assembly comprises a pressing strip rotatably arranged above the fork plate. The rotation axis of the pressing strip extends horizontally along the left-right direction. The bottom of the pressing strip has a downward extending sharp end. The sharp end is located at the rear side of the rotation axis of the pressing strip. When the material box pressing assembly moves downward, the material box can be pressed on the fork plate by the sharp end, and the pressing strip can be rotated backward by the sharp end to drive the material box to move backward and abut against the support plate. The material box is not prone to dislocation during taking and placing.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application filed on January 24, 2022, entitled "A Sheet Product Feeding Machine" with application number 202210077902.X. Technical Field

[0003] This invention belongs to the field of sheet product loading and unloading technology, specifically relating to a picking and placing mechanism for a material box conveyor line of a sheet product loading machine. Background Technology

[0004] Sheet products are common finished and semi-finished products in the industrial manufacturing field, such as PCB boards, carriers, and substrates. During processing, they are mostly stacked in material boxes for easy storage and transportation. During processing, a feeding machine is needed to take the sheet products out of the material boxes one by one and transport them to the corresponding processing equipment. Most existing sheet product feeding machines only have one material box conveyor line, and the loading and unloading positions of the material boxes are set on both sides of the feeding machine. The material box travel distance is long, the space utilization of the feeding machine is low, and interference is easy to occur at the loading and unloading positions of the material boxes when docking with the processing equipment, which is inconvenient to use. There is no fixing device on the carrier plate for picking up and placing the material boxes, and the material boxes are easy to change position due to shaking, which affects the product push. When the product is jammed, the pushing mechanism for pushing the product has no buffer function, which can easily damage the product. The product conveying mechanism is difficult to adjust the conveying distance and cannot adapt to the conveying of products of different widths. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a material box picking and placing mechanism with good fixing effect.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is a pick-and-place mechanism for picking up and placing material boxes on the material box conveyor line of a sheet product feeding machine, the pick-and-place mechanism comprising:

[0007] The pick-and-place seat is movable and positioned on the rear side of the material box conveyor line;

[0008] A support plate is movably connected to the pick-and-place seat. The support plate includes a fork plate and a support plate. The fork plate extends horizontally forward, and the support plate is connected to the rear end of the fork plate and extends vertically upward.

[0009] The picking and placing mechanism also includes a pressing box assembly for pressing the material box onto the support plate. The pressing box assembly is vertically and movably connected to the support plate via a lifting cylinder. The pressing box assembly includes a pressing bar rotatably disposed above the fork plate. The rotation axis of the pressing bar extends horizontally in the left-right direction. The bottom of the pressing bar has a downwardly extending tip, which is located behind the rotation axis of the pressing bar.

[0010] When the pressure box assembly moves downward, it can both press the material box firmly against the fork plate through the tip and drive the pressure bar to rotate backward through the tip, causing the material box to move backward and press against the support plate.

[0011] Preferably, the pressure box assembly further includes an inverted L-shaped plate for connecting the lifting cylinder and the pressure bar. The inverted L-shaped plate includes a horizontal extension plate and a vertical extension plate. The horizontal extension plate extends forward horizontally and is vertically connected to the support plate via the lifting cylinder. The vertical extension plate is connected to the front end of the horizontal extension plate and extends downward vertically. The vertical extension plate is located in front of the support plate. The pressure bar is rotatably connected to the bottom of the vertical extension plate via a rotating shaft.

[0012] More preferably, a torsion spring is sleeved on the rotating shaft, with its two ends abutting against the pressure bar and the vertical extension plate, respectively, and the torsion spring has a tendency to drive the pressure bar to rotate forward.

[0013] Preferably, the pressure strip extends horizontally in the left-right direction, the cross-section of the pressure strip is trapezoidal, and the tip is formed at the connection between the hypotenuse and the upper base of the trapezoid.

[0014] More preferably, the pressure strip has a first working position and a second working position. When the pressure strip is in the first working position, the upper and lower base edges of the trapezoid extend vertically, and the upper base edge is located behind the lower base edge. When the pressure strip is in the second working position, the inclined side of the trapezoid is in contact with the upper surface of the material box, and the tip abuts against the inside corner formed by the side plate and top plate of the material box.

[0015] Preferably, the upper part of the pressure strip is made of aluminum alloy, and the bottom of the pressure strip is made of silicone.

[0016] More preferably, the upper and lower parts of the pressure strip are detachably plugged together.

[0017] Preferably, the material box conveyor line is connected to the conveyor frame and extends in the front-to-back direction, and the material box conveyor line includes multiple synchronously rotating and parallelly spaced material box conveyor belts.

[0018] More preferably, there are two material box conveyor lines arranged vertically and horizontally, and the material box conveyor belts of the two material box conveyor lines rotate in opposite directions.

[0019] More preferably, the width of the fork plate in the left-right direction is less than the spacing between adjacent conveyor belts of the material box in the material box conveyor line.

[0020] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] The picking and placing mechanism provided by this invention includes a picking and placing seat that can be moved back and forth and is disposed on the rear side of the material box conveyor line, a support plate that can be moved up and down and is connected to the picking and placing seat, and a pressing box assembly for pressing the material box onto the support plate. The support plate includes a fork plate and a support plate. The fork plate extends horizontally forward, and the support plate is connected to the rear end of the fork plate and extends vertically upward. The pressing box assembly is connected to the support plate that can be moved up and down via a lifting cylinder. By including a pressing bar that is rotatably disposed above the fork plate in the pressing box assembly, the rotation axis of the pressing bar extends horizontally in the left and right direction, and the bottom of the pressing bar has a downward-extending tip that is located behind the rotation axis of the pressing bar, when the pressing box assembly moves downward, it can both press the material box onto the fork plate through the tip and drive the pressing bar to rotate backward through the tip, driving the material box to move backward and press against the support plate. The fixing effect of the material box during picking and placing is good and it is not easy to misalign. Attached Figure Description

[0022] Figure 1 This is a front view schematic diagram of a preferred embodiment of the present invention.

[0023] Figure 2 yes Figure 1 A diagram showing the view from the right.

[0024] Figure 3 yes Figure 1 A top-down view.

[0025] Figure 4 , Figure 5 yes Figure 1 A three-dimensional schematic diagram.

[0026] Figure 6 yes Figure 1 A three-dimensional enlarged schematic diagram of the conveyor mechanism.

[0027] Figure 7 yes Figure 1 A three-dimensional enlarged schematic diagram of the loading and unloading mechanism.

[0028] Figure 8 yes Figure 1 A three-dimensional enlarged schematic diagram of the pusher mechanism.

[0029] Figure 9 yes Figure 1 A three-dimensional enlarged schematic diagram of the transfer mechanism.

[0030] Among them: 10. Conveying mechanism; 11. Conveying frame; 12. Material box conveyor line; 121. Material box conveyor belt; 122. Baffle; 123. Screw pair; 20. Picking and placing mechanism; 21. Picking and placing seat; 22. Bearing plate; 221. Fork plate; 222. Support plate; 23. Pressing box assembly; 231. Pressing strip; 232. Tip; 233. Inverted L-shaped plate; 233a. Horizontal extension plate; 233b. Vertical extension plate; 234. Rotating shaft; 24. Lifting cylinder; 30. Pushing mechanism; 31. Pushing seat; 311. Connecting plate; 312. Door frame bracket. 313. Pushing cylinder; 32. Pushing assembly; 321. Pushing rod; 322. Pushing block; 33. Buffer assembly; 331. Buffer plate; 332. Slide rail; 333. Slider; 334. Tension spring; 335. Adjusting bolt; 40. Transfer mechanism; 41. Transfer frame; 411. Belt mounting plate; 412. Motor mounting plate; 413. Drive motor; 414. Adjusting motor; 415. Connecting shaft; 416. Screw pair; 417. Slide rail pair; 418. Pressure roller; 42. Product conveyor belt; 421. Pulley; 50. Base plate; 51. Material box. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to 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 providing a clearer and more explicit definition of the scope of protection of the present invention.

[0032] The up-down and left-right directions described in this invention refer to Figure 1 The up / down and left / right directions in this invention refer to the front / back direction. Figure 2 The left and right directions in the middle.

[0033] like Figures 1 to 5 As shown, the sheet product loading machine provided by the present invention is used to automatically remove printed circuit boards from the material box. The loading machine includes a substrate 50 and a conveying mechanism 10, a pick-and-place mechanism 20, a pushing mechanism 30, and a transfer mechanism 40 disposed on the substrate 50. The plane on which the substrate 50 is located is parallel to the horizontal plane. The substrate 50 is disposed on the frame. The conveying mechanism 10 and the pick-and-place mechanism 20 process the material box 51, and the pushing mechanism 30 and the transfer mechanism 40 process the printed circuit board.

[0034] Specifically, such as Figures 1 to 6As shown, the conveying mechanism 10 is used to convey the material box 51. The conveying mechanism 10 includes a conveying frame 11 and a material box conveying line 12. The conveying frame 11 is mounted on the base plate 50 and is a frame structure made of aluminum alloy profile. The material box conveying line 12 is connected to the conveying frame 11 and extends horizontally in the front-back direction. The material box conveying line 12 includes three synchronously rotating material box conveying belts 121. These three material box conveying belts 121 are arranged parallel and spaced apart. These three material box conveying belts 121 are used to carry the material box 51 and convey the material box 51 horizontally in the front-back direction. In this embodiment, there are two material box conveying lines 12, which are arranged spaced apart in the vertical direction on the conveying frame 11. On the 1st, the material box conveyor belts 121 of the two material box conveyor lines 12 rotate in opposite directions. The advantage of this arrangement is that the loading and unloading of the material boxes 51 can be realized on the front side of the substrate 50, which has high space utilization, good flexibility, and convenient docking with processing equipment. In this embodiment, baffles 122 are provided on the left and right sides of the material box conveyor line 12. The baffle 122 on the left side is connected to the conveyor frame 11 by means of a lead screw pair 123, which can move left and right. The baffle 122 guides the material boxes 51 by lying flat against the left and right sides. The left and right movement of the baffle 122 can also adapt to the guidance of material boxes 51 of different widths. This arrangement will not interfere with the normal operation of the material box conveyor belt 121.

[0035] like Figures 1 to 5 , Figure 7 As shown, the pick-and-place mechanism 20 is used to pick up and place material boxes 51 on the material box conveyor line 12. Specifically, the pick-and-place mechanism 20 includes a pick-and-place seat 21, a support plate 22, a pressing box assembly 23, and a lifting cylinder 24. The pick-and-place seat 21 is movably mounted on the base plate 50 and located on the rear side of the material box conveyor line 12. The support plate 22 is movably connected to the pick-and-place seat 21 and includes a fork plate 221 and a support plate 222. The fork plate 221 extends horizontally forward and is movably mounted in the left-right direction. The width is smaller than the spacing between adjacent material box conveyor belts 121 in the material box conveyor line 12. The support plate 222 is connected to the rear end of the fork plate 221 and extends vertically upward. The pressing box assembly 23 is connected to the support plate 222 in a way that allows it to move up and down via the lifting cylinder 24. It is used to press the material box 51 onto the bearing plate 22. The advantage of this arrangement is that the material box 51 is well fixed when it is picked up, placed, and moved. It is not easy for it to be misaligned due to shaking, which can reduce the probability of jamming when pushing the material later.

[0036] To further improve the fixing effect of the material box 51 on the support plate 22 and to position the material box 51, in this embodiment, the pressing box assembly 23 includes a pressing strip 231 rotatably disposed above the fork plate 221. The rotation axis of the pressing strip 231 extends horizontally in the left-right direction. The bottom of the pressing strip 231 has a downwardly extending tip 232. The tip 232 is located behind the rotation axis of the pressing strip 231. When the pressing box assembly 23 moves downward, it can both press the material box 51 onto the fork plate 221 through the tip 232 and drive the pressing strip 231 to rotate backward through the tip 232, thereby driving the material box 51 to move backward and press against the support plate 222.

[0037] To facilitate the installation of the pressure strip 231, in this embodiment, the pressure box assembly 23 further includes an inverted L-shaped plate 233 for connecting the lifting cylinder 24 and the pressure strip 231. The inverted L-shaped plate 233 includes a horizontal extension plate 233a and a vertical extension plate 233b. The horizontal extension plate 233a is movably connected to the support plate 222 via the lifting cylinder 24, extending horizontally forward. The vertical extension plate 233b is connected to the front end of the horizontal extension plate 233a and extends vertically downward. The pressure strip 231 is rotatably connected to the bottom of the vertical extension plate 233b via a rotating shaft 234. A torsion spring (not shown in the figure) is sleeved on the rotating shaft 234. The two ends of the spring abut against the pressure strip 231 and the vertical extension plate 233b respectively. The torsion spring has the tendency to drive the pressure strip 231 to rotate forward. Specifically, the pressure strip 231 extends horizontally in the left and right direction. The cross section of the pressure strip 231 is trapezoidal. The connection between the hypotenuse and the upper base of the trapezoid forms a tip 232. The pressure strip 231 has a first working position and a second working position. When the pressure strip 231 is in the first working position, the upper and lower bases of the trapezoid extend vertically, and the upper base is located behind the lower base. When the pressure strip 231 is in the second working position, the hypotenuse of the trapezoid is in contact with the upper surface of the material box 51, and the tip 232 abuts against the inside corner formed by the side plate and the top plate of the material box 51.

[0038] To further enhance the clamping effect of the pressure strip 231, in this embodiment, the upper part of the pressure strip 231 is made of aluminum alloy, and the bottom part of the pressure strip 231 is made of silicone. The upper and bottom parts of the pressure strip 231 are detachably connected by an insert. This arrangement facilitates the transmission of force, increases the friction between the silicone and the upper surface of the material box 51 through deformation, protects the upper surface of the material box 51 from being crushed, and facilitates disassembly and replacement.

[0039] like Figures 1 to 5 , Figure 8As shown, the pushing mechanism 30 is used to push the printed circuit board in the material box 51 of the carrier plate 22 to the right horizontally. The pushing mechanism 30 includes a pushing seat 31, a pushing component 32, and a buffer component 33. The pushing seat 31 is disposed on the substrate 50 and located to the left of the pick-and-place mechanism 20. The pushing component 32 extends horizontally in the left and right direction. The pushing component 32 is connected to the pushing seat 31 in a horizontally movable manner through the buffer component 33. The thickness of the pushing component 32 is greater than the thickness of the product and less than the vertical spacing between adjacent printed circuit boards in the material box 51. The buffer component 33 is used to absorb the pushing force applied to the printed circuit board by the pushing component 32 when the material is jammed, so as to prevent the product from being damaged.

[0040] Specifically, a vertically movable connecting plate 311 is connected to the pusher base 31. A door frame-shaped bracket 312 and a pusher electric cylinder 313 are connected to the connecting plate 311. The pusher assembly 32 includes a pusher rod 321 and a pusher block 322. The right end of the pusher rod 321 passes through the crossbeam of the door frame-shaped bracket 312. The pusher block 322 is connected to the right end of the pusher rod 321. The right surface of the pusher block 322 is provided with a groove for accommodating the side wall of the product. The left end of the pusher rod 321 is connected to the pusher electric cylinder 313 through a buffer assembly 33. The pusher electric cylinder 313 is used to support the buffer assembly 33 and drive the buffer assembly 33 to move left and right. The advantage of this arrangement is that the alignment of the pusher assembly 32 can be easily achieved by adjusting the position of the connecting plate 311 in the vertical direction.

[0041] Furthermore, the buffer assembly 33 includes a buffer plate 331 connected to the pusher cylinder 313, a slide rail 332 disposed on the buffer plate 331, and a slider 333 slidably disposed on the slide rail 332. The slide rail 332 extends horizontally in the left-right direction. The slider 333 is connected to the left end of the pusher rod 321. An adjustable tension spring 334 is disposed between the slider 333 and the buffer plate 331. The two ends of the tension spring 334 are respectively fixed to the slider 333 and the buffer plate 331 by adjusting bolts 335. Rotating the adjusting bolts 335 can tighten or loosen the tension spring 334 to realize the elasticity adjustment of the tension spring 334. The tension spring 334 has a tendency to drive the slider 333 to slide to the right. When the material is jammed, the force applied to the printed circuit board by the pusher assembly 32 pushes back to the left onto the slider 333, causing the slider 333 to move to the left, so that the tension spring 334 extends to absorb the pushing force applied to the printed circuit board by the pusher assembly 32.

[0042] like Figures 1 to 5 , Figure 9As shown, the transfer mechanism 40 is used to carry the printed circuit board pushed out by the pusher assembly 32 and transport it to the processing equipment. Specifically, the transfer mechanism 40 includes a transfer frame 41 and a product conveyor belt 42. The transfer frame 41 is horizontally movable and is located on the substrate 50 and to the right of the pick-and-place mechanism 30. The product conveyor belt 42 is rotatably connected to the transfer frame 41 and is used to horizontally transport the printed circuit board to the right. In this embodiment, there are two product conveyor belts 42. These two product conveyor belts 42 rotate synchronously and are arranged parallel and spaced apart. The distance between the two product conveyor belts 42 is adjustable. The advantage of this arrangement is that it can adapt to the transport of printed circuit boards of different widths by adjusting the distance between the conveyor belts 42, and has a wide range of applications.

[0043] Specifically, the transfer frame 41 includes two belt mounting plates 411 and a motor mounting plate 412. The belt mounting plates 411 and the motor mounting plate 412 are arranged parallel to each other. The belt mounting plates 411 are provided with pulleys 421 for tensioning the product conveyor belt 42. The motor mounting plate 412 is provided with a drive motor 413 for driving the pulleys 421 to rotate and an adjusting motor 414 for adjusting the distance between the two belt mounting plates 411. Specifically, the drive motor 413 drives the pulleys 421 on the two belt mounting plates 411 to rotate synchronously through the same connecting shaft 415. The cross-section of the connecting shaft 415 is a regular hexagon. A lead screw pair 416 is provided between the two belt mounting plates 411, and the lead screw of the lead screw pair 416 is rotatably connected to one of the belt mounting plates 411. The lead screw assembly 416 has its lead screw nut connected to another belt mounting plate 411. The lead screw is connected to the adjusting motor 414. The lead screw is parallel to the axis of the connecting shaft 415. The connecting shaft 415 is used not only to drive the power transmission of the motor 413, but also to guide the belt mounting plate 411 in conjunction with the lead screw. To reduce the load on the connecting shaft 415 and the lead screw, the bottom of the belt mounting plate 411 is mounted on the slide rail assembly 417. To improve the stability of the printed circuit board on the product conveyor belt 42, in this embodiment, the two sides of the belt mounting plate 411 are connected to non-powered pressure rollers 418 that can move up and down. The pressure rollers 418 are rotatably arranged, and the axis of rotation of the pressure rollers 418 is parallel to the axis of rotation of the pulley 421. The pressure rollers 418 are used to press the printed circuit board onto the product conveyor belt 42.

[0044] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A picking and placing mechanism, comprising: A pick-and-place seat that can be moved back and forth and is located on the rear side of the material box conveyor line; A support plate is movably connected to the pick-and-place seat. The support plate includes a fork plate extending horizontally forward and a support plate connected to the rear end of the fork plate and extending vertically upward. A pressing box assembly for pressing the material box onto a support plate; the pressing box assembly is connected to the support plate and can be moved up and down via a lifting cylinder. Its features are: The pressure box assembly includes a pressure bar rotatably mounted above the fork plate. The rotation axis of the pressure bar extends horizontally in the left-right direction. The pressure bar has a trapezoidal cross-section, with a pointed tip at the junction of the hypotenuse and the upper base. This pointed tip is located behind the rotation axis of the pressure bar. When the pressure box assembly moves downward, it can both press the material box firmly against the fork plate through the pointed tip and drive the pressure bar to rotate backward through the pointed tip, causing the material box to move backward and press against the support plate. The pressure box assembly also includes an inverted L-shaped plate for connecting the lifting cylinder and the pressure bar. The inverted L-shaped plate includes a horizontal extension plate and a vertical extension plate. The horizontal extension plate extends forward horizontally and is connected to the support plate vertically via the lifting cylinder. The vertical extension plate is connected to the front end of the horizontal extension plate and extends downward vertically. The vertical extension plate is located in front of the support plate. The pressure strip is rotatably connected to the bottom of the vertical extension plate via a rotating shaft. A torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring abut against the pressure strip and the vertical extension plate respectively. The torsion spring has a tendency to drive the pressure strip to rotate forward. The pressure strip has a first working position and a second working position. When the pressure strip is in the first working position, the upper and lower base edges of its trapezoidal cross-section extend vertically, and the upper base edge is located behind the lower base edge. When the pressure strip is in the second working position, the hypotenuse of its trapezoidal cross-section fits against the upper surface of the material box, and the tip abuts against the inside corner formed by the side plate and the top plate of the material box.

2. The picking and placing mechanism according to claim 1, characterized in that: The upper part of the pressure strip is made of aluminum alloy, and the bottom of the pressure strip is made of silicone.

3. The picking and placing mechanism according to claim 2, characterized in that: The upper and lower parts of the pressure strip are detachably plugged in.

4. The picking and placing mechanism according to claim 1, characterized in that: The material box conveyor line is connected to the conveyor frame and extends in the front-to-back direction. The material box conveyor line includes multiple synchronously rotating and parallelly spaced material box conveyor belts.

5. The picking and placing mechanism according to claim 4, characterized in that: There are two material box conveyor lines, which are arranged vertically and horizontally, and the material box conveyor belts of these two material box conveyor lines rotate in opposite directions.

6. The picking and placing mechanism according to claim 4, characterized in that: The width of the fork plate in the left-right direction is less than the spacing between adjacent conveyor belts of the hopper in the hopper conveyor line.

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