Positioning and clamping device for circuit board unloader

Abstract

The present application relates to the positioning and clamping technical field, particularly relates to a kind of positioning and clamping device for circuit board lower board machine;Including lower board machine, lower board machine includes lifting section and feeding section, lifting section is placed with material frame;Feeding section is equipped with clamping mechanism;The present application effectively solves the problem of inaccurate positioning caused by the circuit board offset, rotation or deformation in the prior art by clamping mechanism.Combination of positioning block and extrusion plate is used in clamping mechanism, first, the rubber ball at the lower end of the pressing strip is used to flatten the deformed circuit board, then the positioning block is used to clamp and position from left and right sides, and the extrusion plate is used to clamp and position from front and back direction, which realizes the overall control of four free edges of the circuit board.Not only can it correct the positional deviation in the conveying process, but also can adapt to the deformed board body during the moving process, to ensure that the circuit board can be accurately inserted into the material frame.

Description

TECHNICAL FIELD

[0001] The present application relates to the positioning and clamping technical field, in particular to a positioning and clamping device for a circuit board unloader. BACKGROUND

[0002] The unloader is a key equipment for automatically collecting, stacking and transporting circuit boards in the electronic manufacturing industry, mainly applied to the end of the surface mount technology production line, taking the completed circuit board from the conveying line, and stacking it in the frame or tray, and the frame is evenly provided with a limiting groove for placing the circuit board, and the placing method is that the frame is conveyed to the lifting section of the unloader by the output section of the unloader, then the feeding section of the unloader conveys the circuit board to the edge of the feeding frame, and then the push rod pushes the circuit board horizontally into the limiting groove of the frame.

[0003] However, the following problems exist in the process of moving the circuit board into the frame: when the circuit board is pushed into the frame from one side by the push rod, and the circuit board is offset or rotated during conveying or deformed after reflow soldering, the single-sided push rod cannot effectively correct it, which may cause the circuit board to be unable to be pushed into the frame; in addition, the front and rear sides of the conveying belt cannot be clamped and positioned due to the need for conveying, so that only two free edges of the circuit board in the conveying direction can be clamped and positioned, and in order to facilitate the placement of the unloader, there is a gap distance between the two sides of the circuit board and the conveying belt, so that the existing clamping mechanism cannot correct the position by clamping only the two free edges in the conveying direction, thereby causing the circuit board to be unable to be accurately inserted into the frame, and the insertion and placement of the circuit board are generally performed after reflow soldering, but the circuit board may be deformed and arched after reflow soldering, even after flattening, the circuit board may still be deformed and rebounded due to conveying vibration and gravity, and the arching height is uncertain, which causes the relative edge distance of the circuit board to change, thereby causing the clamping mechanism to face the uncontrollable state of being unable to effectively clamp the edge, insufficient clamping force or excessive clamping to exacerbate the arching deformation, and the circuit board cannot be inserted into the frame due to the instability of the geometric shape.

[0004] Therefore, the circuit board is prone to offset or rotation during conveying, and is prone to deformation after reflow soldering, which causes the existing single-sided pushing method or clamping method to be unable to effectively position and insert, which is a technical problem to be solved by those skilled in the art. SUMMARY

[0005] In view of the above problems, the present application provides a positioning and clamping device for a circuit board unloader to solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: the present application provides a positioning and clamping device for a circuit board unloader, which comprises a unloader, the unloader comprises a lifting section and a feeding section, and the lifting section is provided with a frame; the feeding section is provided with a clamping mechanism.

[0007] The clamping mechanism comprises a support frame fixedly installed on the feeding section and in reverse concave shape, two vertical sections of the support frame are slidably provided with a fixed plate, the fixed plate is provided with a pressing part and a deviation rectifying part.

[0008] The pressing part comprises two pressing strips slidably provided below the fixed plate, and rubber balls are uniformly and rollingly installed at lower ends of the pressing strips.

[0009] The deviation rectifying part comprises two extrusion plates slidably provided below the fixed plate, a moving frame in concave shape is slidably installed at a rear end of the fixed plate and located at a rear side of the support frame, two longitudinal sections of the moving frame are slidably provided with fixed seats, L-shaped positioning blocks are slidably provided on the two fixed seats, pressing blocks are slidably provided on vertical sections of the positioning blocks, and magnetic attraction members are provided on the fixed seats and the positioning blocks.

[0010] The pressing strips are lowered to press the circuit board through the rubber balls, the two positioning blocks clamp the circuit board to rectify left and right sides of the circuit board, the pressing blocks press the circuit board to limit upward and downward displacement and are locked by the magnetic attraction members, the fixed plate is moved upward to lift the circuit board to separate the circuit board from the feeding section, the two extrusion plates clamp the circuit board to rectify front and rear sides of the circuit board and the positioning blocks follow and adapt, the magnetic attraction members fix the positioning blocks to maintain the state, and the moving frame drives the circuit board to be accurately inserted into the frame.

[0011] As a preferred scheme, the pressing part further comprises a connecting plate fixedly installed at upper ends of the two pressing strips, a plurality of first supporting columns are fixedly installed at an upper end of the connecting plate, a lifting plate is fixedly installed at the upper end of the connecting plate and slidably penetrates through the fixed plate, a third air cylinder is fixedly installed at a lower end of the lifting plate, and an extension section of the third air cylinder is fixedly connected with the upper end of the connecting plate.

[0012] As a preferred scheme, the deviation rectifying part further comprises support plates slidably installed at lower ends of the fixed plate and corresponding to the extrusion plates, the extrusion plates are fixedly installed on the corresponding support plates, a bidirectional air cylinder is fixedly installed at the lower end of the fixed plate, two extension sections of the bidirectional air cylinder are fixedly connected with the two support plates, a push-pull plate is slidably installed on opposite surfaces of the two longitudinal sections of the moving frame through a pair of guide columns, and the fixed seat is installed on one end of the push-pull plate away from the guide column through a pair of supporting rods.

[0013] As a preferred scheme, the positioning block is slidably installed on the fixed seat through a first elastic member, the first elastic member comprises an axle plate, two front and rear symmetrical axle plates are fixedly installed at one end of the fixed seat away from the corresponding supporting rod, an axle rod is fixedly installed between the two axle plates, a pair of axle seats are slidably installed on the axle rod, the axle seats are fixedly connected with the corresponding positioning blocks, and a return spring is installed between the two axle seats and the corresponding axle plate.

[0014] As a preferred scheme, the pressing block is slidably installed on the positioning block through the second elastic member, the second elastic member comprises a countersunk hole, a pair of countersunk holes are formed in the upper end of the vertical section of the positioning block, a limiting column corresponding to the countersunk hole is slidably installed at the lower end of the pressing block, a compression spring is installed between the upper hole bottom wall of the countersunk hole and the lower end of the corresponding pressing block, the corresponding limiting column, a first air cylinder corresponding to the pressing block is fixedly installed at the lower end of the fixed plate, and the extension section of the first air cylinder abuts against the upper end of the corresponding pressing block.

[0015] As a preferred scheme, the magnetic attraction member comprises a slot, the fixed seat is provided with the slot at the end away from the corresponding support rod, a first electromagnet is installed in the slot, the shaft seat is provided with a magnetic plate at the end away from the corresponding positioning block, a groove is formed in the upper end of the vertical section of the positioning block, and a second electromagnet is installed in the groove.

[0016] As a preferred scheme, the magnetic plate is fixedly installed with a positioning column corresponding to the shaft seat at the end away from the first electromagnet, and a tension spring is fixedly installed between the magnetic plate and the shaft seat and sleeved on the corresponding positioning column.

[0017] As a preferred scheme, the rear end of the fixed plate is fixedly installed with two left-right symmetrical sliding sleeves, the rear vertical section of the support frame is provided with a rectangular slot corresponding to the sliding sleeve, the sliding sleeve is slidably penetrated through the corresponding rectangular slot, and the two longitudinal sections of the moving frame are fixedly installed with a sliding rod slidably penetrated through the two sliding sleeves.

[0018] As a preferred scheme, the two longitudinal sections of the moving frame are fixedly installed with a second air cylinder at the opposite ends, the extension section of the second air cylinder is slidably penetrated through the moving frame and fixedly connected with the corresponding push-pull plate, the upper end of the fixed plate is fixedly installed with a fourth air cylinder, and the extension section of the fourth air cylinder is fixedly connected with the right longitudinal section of the moving frame.

[0019] As a preferred scheme, the upper end of the support frame is fixedly installed with a hydraulic cylinder, the extension section of the hydraulic cylinder is slidably penetrated through the rear of the support frame and fixedly installed with a driving plate, and a plurality of second support columns are fixedly installed between the driving plate and the fixed plate.

[0020] The above one or more technical solutions in the embodiment of the present application have at least one of the following technical effects: 1. The present application effectively solves the problem of inaccurate positioning of the circuit board caused by deviation, rotation or deformation in the prior art through the clamping mechanism. The clamping mechanism adopts a cooperative working mode of the positioning block and the extrusion plate. The deformed circuit board is first flattened by the rubber balls at the lower end of the pressing strip, and then clamped and positioned from the left and right sides by the positioning block and from the front and back directions by the extrusion plate, thereby achieving comprehensive control of the four free edges of the circuit board. Not only can the positional deviation in the conveying process be corrected, but also the deformed board body in the moving process can be adapted, thereby ensuring that the circuit board can be accurately inserted into the material frame.

[0021] Secondly, the clamping mechanism of the present application realizes the accurate adjustment of the position of the circuit board through the cooperation of the positioning block and the extrusion plate. The positioning block can automatically correct the deviation in the left-right direction when clamping from the left and right sides, and the extrusion plate is responsible for adjusting the position in the front-back direction. Its four-way positioning mechanism overcomes the limitation of the existing clamping mechanism that can only contact two free edges, so that even if the circuit board deviates on the conveyor belt, it can be accurately reset to the predetermined position through multi-directional clamping.

[0022] Thirdly, the clamping mechanism of the present application can exert uniform downward pressure on the arched circuit board through the rubber balls at the lower end of the pressing strip, so that it can be flattened before being clamped and positioned. This working procedure of flattening first and then positioning effectively solves the problem of deformed circuit boards being difficult to clamp, avoids the situation of insufficient clamping force or inability to clamp due to deformation of the circuit board body, and ensures that circuit boards of various degrees of deformation can be reliably clamped and positioned.

[0023] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creative labor.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0026] Figure 2 It is a schematic diagram of the structure of the clamping mechanism of the present application.

[0027] Figure 3 It is a schematic diagram of the structure of the deviation correction part of the present application.

[0028] Figure 4 It is a schematic diagram of the structure of the downward pressing part of the present application.

[0029] Figure 5 It is a schematic diagram of the structure between the positioning block, the pressing block and the limiting column of the present application.

[0030] Figure 6 It is Figure 5 It is an enlarged view of structure A in the middle.

[0031] 10, lifting section; 11, feeding section; 12, material frame; 2, clamping mechanism; 20, support frame; 21, fixed plate; 3, pressing part; 30, pressing strip; 31, rubber ball; 32, connecting plate; 33, lifting plate; 34, No. 3 air cylinder; 4, deviation rectifying part; 40, extrusion plate; 41, moving frame; 410, sliding sleeve; 411, sliding rod; 42, fixed seat; 420, push-pull plate; 421, support rod; 43, positioning block; 44, pressing block; 440, compression spring; 441, No. 1 air cylinder; 45, support plate; 46, bidirectional air cylinder; 47, shaft rod; 50, shaft seat; 51, return spring; 6, magnetic attraction piece; 60, No. 1 electromagnet; 61, magnetic plate; 610, positioning column; 611, tension spring; 62, No. 2 electromagnet; 7, No. 2 air cylinder; 8, No. 4 air cylinder. DETAILED DESCRIPTION

[0032] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below in combination with the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the concept of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] As shown in Figure 1 , a positioning and clamping device for a circuit board unloader comprises an unloader, the unloader comprising a lifting section 10 arranged at the middle, a feeding section 11 arranged at the right side and an output section arranged at the left side, and a material frame 12 placed in the lifting section 10; the unloader and the material frame 12 are both prior art and are not the technical points of the present application, and will not be described in detail here, and the feeding section 11 is provided with a clamping mechanism 2.

[0034] As shown in Figure 1 and Figure 2 , the clamping mechanism 2 comprises a support frame 20, the support frame 20 being fixedly installed on the feeding section 11 in an inverse concave shape, and a fixed plate 21 being slidably arranged between the two vertical sections of the support frame 20, and the fixed plate 21 being provided with a pressing part 3 and a deviation rectifying part 4.

[0035] As shown in Figure 2 and Figure 3 , the upper end of the support frame 20 is fixedly installed with a hydraulic cylinder, the telescopic section of the hydraulic cylinder is fixedly installed with a driving plate after sliding through the support frame 20, and a plurality of No. 2 struts are fixedly installed between the driving plate and the fixed plate 21.

[0036] As shown in Figure 3 and Figure 4 , the pressing part 3 comprises two front and rear symmetrical pressing strips 30 slidably arranged below the fixed plate 21, and rubber balls 31 are uniformly and rollingly installed at the lower ends of the pressing strips 30.

[0037] As Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the deviation rectification part 4 includes two front and rear symmetrical extrusion plates 40 slidingly arranged below the fixed plate 21, the mobile frame 41 in a concave shape is slidingly installed at the rear side of the support frame 20 at the rear end of the fixed plate 21, and the two longitudinal sections of the mobile frame 41 are located at the left and right sides of the support frame 20 respectively, the fixed seat 42 is slidingly arranged at the left and right sides of the two longitudinal sections of the mobile frame 41, the opposite surfaces of the two fixed seats 42 are slidingly arranged with the positioning block 43 in an L shape, the pressure block 44 is slidingly arranged on the vertical section of the positioning block 43, and the magnetic attraction piece 6 is arranged on the fixed seat 42 and the positioning block 43.

[0038] As Figure 2 and Figure 3 shown, the lower pressing part 3 further includes the connecting plate 32 fixedly installed on the upper ends of the two pressing strips 30, a plurality of first support columns are fixedly installed on the upper end of the connecting plate 32, the lifting plate 33 is slidingly penetrated and fixedly installed on the upper end of the fixed plate 21, the third cylinder 34 is fixedly installed on the lower end of the lifting plate 33, and the extension section of the third cylinder 34 is fixedly connected with the upper end of the connecting plate 32.

[0039] As Figures 1 to 6 shown, in specific work, the external conveying mechanism conveys the circuit board to the feeding section 11, the feeding section 11 conveys the circuit board to the position of the clamping mechanism 2, then the hydraulic cylinder pushes the fixed plate 21 downward through the driving plate and the second support column, so that the two positioning blocks 43 are located at the left and right sides of the circuit board, and the two extrusion plates 40 are located at the front and rear sides of the feeding section 11, and then the third cylinder 34 pushes the two pressing strips 30 downward through the lifting plate 33, the first support column and the connecting plate 32, and the pressing strip 30 temporarily flattens the slightly arched circuit board caused by vibration in the conveying process through the rubber ball 31, avoids causing further deformation or damage of the circuit board caused by directly clamping the circuit board, and flattens the circuit board in the conveying process, so that the circuit board is in a stress-locked state from flattening, fixing to moving all the time, avoids the stress release after the flattening mechanism exits in the traditional process, and avoids the problems of rebound deformation caused by conveying vibration and gravity factors, so that the circuit board maintains a stable geometric shape until it reaches the material frame 12, and finally the circuit board is accurately inserted into the limiting groove of the material frame 12 in a flat and non-offset posture, avoids the problems of jamming and collision caused by deformation or unknown misalignment, and realizes high-reliability plate operation.

[0040] Then the two fixed seats 42 move towards each other, driving the two positioning blocks 43 to move towards each other to clamp the circuit board on the left and right sides, completing the deviation correction in the left-right direction, and then the pressing block 44 moves down to press the circuit board on the left and right edges, and is fixed and maintained in the pressed state by the magnetic attraction element 6. The extension segment of the third cylinder 34 retracts, driving the pressing strip 30 to move up and disengage from the circuit board.

[0041] The extension segment of the hydraulic cylinder retracts, driving the fixed plate 21 to move up through the driving plate and the second support column. When the fixed plate 21 moves up, it drives the circuit board that has been corrected in the left-right direction to rise and disengage from the feeding segment 11. The pressing plate 40 is higher than the feeding segment 11 at this time, so the pressing plate 40 is not blocked and interfered by the feeding segment 11. Then the two pressing plates 40 move towards each other to clamp the circuit board on the front and back sides, completing the deviation correction in the front-back direction. The positioning block 43 is fixed and maintained in the corrected state of the circuit board by the magnetic attraction element 6. Then the moving frame 41 drives the fixed seat 42 and the positioning block 43 to move left as a whole. The positioning block 43 drives the circuit board that has been corrected in the left-right and front-back directions to be accurately inserted into the corresponding position of the material frame 12. The magnetic attraction element 6 is powered off to release the positioning block 43 and the pressing block 44. Each component is reset to prepare for the next operation.

[0042] As shown in Figure 2 , Figure 3 and Figure 4 , the deviation correction part 4 further includes support plates 45 slidably installed on the lower end of the fixed plate 21 and corresponding to the pressing plates 40. The pressing plates 40 are fixedly installed on the corresponding support plates 45. The lower end of the fixed plate 21 is fixedly installed with a two-way cylinder 46. The two extension segments of the two-way cylinder 46 are fixedly connected with the two support plates 45, respectively. The opposite faces of the two longitudinal segments of the moving frame 41 are slidably installed with a push-pull plate 420 through a pair of guide columns. The end of the push-pull plate 420 away from the guide column is installed with a fixed seat 42 through a pair of support rods 421.

[0043] As shown in Figure 5 and Figure 6 , the positioning block 43 is slidably installed on the fixed seat 42 through a first elastic element. The first elastic element includes an axle plate. The end of the fixed seat 42 away from the corresponding support rod 421 is fixedly installed with two front-back symmetrical axle plates. The two axle plates are fixedly installed with an axle rod 47 therebetween. The axle rod 47 is slidably installed with a pair of axle seats 50. The axle seats 50 are fixedly connected with the corresponding positioning blocks 43. The two axle seats 50 are installed with a return spring 51 between the corresponding axle plates.

[0044] As shown in Figure 4 , Figure 5 and Figure 6As shown in the figure, the pressing block 44 is slidingly installed on the positioning block 43 by the second elastic member, the second elastic member includes a counterbore, a pair of counterbores are formed in the upper end of the vertical section of the positioning block 43, a limiting column slidingly matched with the counterbores is fixedly installed at the lower end of the pressing block 44, a compression spring 440 is installed between the upper hole bottom wall of the counterbores and the lower end of the corresponding pressing block 44, and the fixed plate 21 is fixedly installed with a first air cylinder 441 corresponding to the pressing block 44, and the extension section of the first air cylinder 441 abuts against the upper end of the corresponding pressing block 44.

[0045] As shown in the figure, Figure 2 and Figure 3 As shown in the figure, the two longitudinal sections of the moving frame 41 are fixedly installed with a second air cylinder 7 at the opposite ends, the extension section of the second air cylinder 7 slidingly penetrates the moving frame 41 and is fixedly connected with the corresponding push-pull plate 420, and the upper end of the fixed plate 21 is fixedly installed with a fourth air cylinder 8, and the extension section of the fourth air cylinder 8 is fixedly connected with the right longitudinal section of the moving frame 41.

[0046] As shown in the figure, Figure 5 and Figure 6 As shown in the figure, the magnetic attraction member 6 includes a notch, the fixed seat 42 is provided with a notch at the end away from the corresponding support rod 421, the notch is installed with a first electromagnet 60, the shaft seat 50 is provided with a magnetic plate 61 at the end away from the corresponding positioning block 43, the upper end of the vertical section of the positioning block 43 is provided with a groove, and the groove is installed with a second electromagnet 62.

[0047] As shown in the figure, Figure 5 and Figure 6 As shown in the figure, the magnetic plate 61 is fixedly installed with a limiting column 610 slidingly matched with the shaft seat 50 at the end away from the first electromagnet 60, and a tension spring 611 is fixedly installed between the magnetic plate 61 and the shaft seat 50 and is sleeved on the corresponding limiting column 610.

[0048] As shown in the figure, Figures 1 to 6 As shown in the figure, in specific work, the two second air cylinders 7 drive the corresponding two positioning blocks 43 to move close to each other through the corresponding push-pull plate 420 and the support rod 421, the vertical section of the positioning block 43 corrects the left and right sides of the circuit board, then the first air cylinder 441 drives the corresponding pressing block 44 to move downward, and the compression spring 440 is compressed, the downward movement of the pressing block 44 drives the circuit board to tightly abut against the horizontal section of the positioning block 43, so as to limit the upward and downward movement of the circuit board, then the second electromagnet 62 is energized to fix the pressing block 44 in the downward state, so that the pressing block 44 keeps pressing the circuit board.

[0049] After the extension section of the first cylinder 441 moves away from the corresponding pressing block 44, the third cylinder 34 pulls the two pressing strips 30 away from the circuit board, so that the pressing strips 30 are higher than the pressing plates 40. At this time, the circuit board is kept in a flat state under the pressing of the pressing block 44. Then the hydraulic cylinder pulls the fixed plate 21 to move upwards, and the fixed plate 21 drives the circuit board, which has been corrected left and right, to move upwards and away from the feeding section 11.

[0050] Then the bidirectional cylinder 46 pulls the two supporting plates 45 to move close to each other, and the two supporting plates 45 drive the two pressing plates 40 to move close to each other to press the circuit board, so as to correct the front and back sides of the circuit board. During the correction process, the circuit board and the two positioning blocks 43 move forward and backward. The movement of the positioning blocks 43 forces the corresponding two reset springs 51 to deform. After the correction of the front and back sides of the circuit board is completed, the first electromagnet 60 is powered on to attract the magnetic plate 61, so as to limit the movement of the positioning blocks 43 and keep the circuit board in a completely positioned state. At this time, the tension spring 611 is stretched, and the bidirectional cylinder 46 pushes the two supporting plates 45 to move away from each other, and the two supporting plates 45 drive the corresponding pressing plates 40 to move away from the circuit board.

[0051] As shown in Figure 2 and Figure 3 , the rear end of the fixed plate 21 is fixedly provided with two left-right symmetrical sliding sleeves 410, and the rear vertical section of the supporting frame 20 is provided with rectangular grooves corresponding to the sliding sleeves 410. The sliding sleeves 410 slide through the corresponding rectangular grooves, and the two longitudinal sections of the moving frame 41 are fixedly provided with a sliding rod 411 sliding through the two sliding sleeves 410.

[0052] As shown in Figure 2 , Figure 3 , Figures 5 to 6 , in specific work, the fourth cylinder 8 pulls the moving frame 41 to move left, and the moving frame 41 drives the positioned circuit board to move left through the supporting rod 421, so that the circuit board can be smoothly inserted into the limiting groove of the material frame 12. After moving to the position, the second electromagnet 62 is powered off to release the fixation of the pressing block 44, and the pressing block 44 moves upwards away from the circuit board under the action of the pressing spring 440. The second cylinder 7 pulls the corresponding positioning block 43 away from the circuit board, and after the positioning block 43 completely moves away from the circuit board, the first electromagnet 60 is powered off to release the fixation of the magnetic plate 61. The magnetic plate 61 moves away from the first electromagnet 60 under the action of the tension spring 611, but the gap between the magnetic plate 61 and the tension spring 611 is within the adsorbable range of the first electromagnet 60, so as to ensure that the positioning block 43 is fixed, and the movement of the positioning block 43 drives the magnetic plate 61 to frequently rub against the first electromagnet 60, thereby prolonging the service life of the first electromagnet 60 and the magnetic plate 61. Then the positioning block 43 is reset under the action of the reset spring 51.

[0053] After the lifting section 10 of the lower plate machine drives the material frame 12 to move down by a distance, the next limiting groove of the material frame 12 moves to the path position of the material to be placed, so as to prepare for the subsequent clamping mechanism 2 to clamp the circuit board and place it on the material frame 12. After the movement is completed, the No. 4 cylinder 8 pushes the moving frame 41 to move right to reset, so as to prepare for the next time to clamp the circuit board. Thus, the clamping and placing of the circuit board are carried out according to the above operation reciprocatingly until the corresponding number of circuit boards are placed in the material frame 12. Then, the lifting plate 33 of the lower plate machine transports the material frame 12 loaded with the circuit boards to the output section. The output section outputs the material frame 12 away from the lifting section 10. Then, the material frame 12 is moved out away from the lower plate machine by an external forklift and is placed uniformly. Then, the empty material frame 12 is inserted into the output section. The output section transports the empty material frame 12 into the lifting section 10, so as to continue the clamping and placing of the circuit board.

[0054] In the above entire circuit board lowering process, the actions are closely connected, and the high-speed pneumatic components respond, so that the flattening and rectification period is greatly compressed. The geometric stability of the circuit board is maintained by rigid constraint, so as to ensure one-time accurate insertion into the material frame 12 and avoid the efficiency loss of manual obstacle removal, restart debugging and the like caused by repeated jamming in the traditional scheme. Therefore, the mechanism design of the present application is a necessary technical investment to ensure the high-reliability insertion of the circuit board into the material frame 12. The essence is to replace the uncontrollable post-fault processing link with controllable pre-accuracy control process. The continuous and stable operation of the production line is realized by avoiding rework. Ultimately, in the precise circuit board lowering scene, the substantial improvement of the overall production efficiency is achieved by the micro-increment of single operation, and the precision and efficiency are optimized cooperatively.

[0055] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description. Without making the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the scope of protection of the present application. The orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0056] In addition, the terms "first", "second", "No. 1", "No. 2" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "No. 1", "No. 2" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0057] In the description of the present application, it also needs to be explained that, unless explicitly specified and limited, the terms "set", "connected", "mounted", "connected" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] The embodiments of the specific implementation are the preferred embodiments of the present application, not limited by the protection scope of the present application, so that equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A positioning and clamping device for a circuit board debonder, comprising a debonder, the debonder comprising a lifting section and a feeding section, a material frame being placed in the lifting section; characterized in that: The feeding section is provided with a clamping mechanism; The clamping mechanism comprises a support frame fixedly installed on the feeding section and in an inverted concave shape, two vertical sections of the support frame are slidably provided with a fixed plate, the fixed plate is provided with a pressing part and a deviation rectifying part; The pressing part comprises two pressing strips slidably provided below the fixed plate, the lower ends of the pressing strips are uniformly and rollingly installed with rubber balls; The deviation rectifying part comprises two extrusion plates slidably provided below the fixed plate, a rear end of the fixed plate is slidably installed with a moving frame in a concave shape located at the rear side of the support frame, two longitudinal sections of the moving frame are slidably provided with fixed seats, two fixed seats are slidably provided with L-shaped positioning blocks, vertical sections of the positioning blocks are slidably provided with pressing blocks, the fixed seats and the positioning blocks are provided with magnetic attraction elements; The pressing strips are lowered to press the circuit board through the rubber balls, the two positioning blocks clamp the circuit board left and right sides to rectify deviation, the pressing blocks press the circuit board to limit upward and downward displacement and are locked by the magnetic attraction elements, the fixed plate is lifted to lift the circuit board to separate from the feeding section, the two extrusion plates clamp the circuit board front and back sides to rectify deviation and the positioning blocks follow and adapt, the magnetic attraction elements fix the positioning blocks to maintain the state, and the moving frame drives the circuit board to be accurately inserted into the frame.

2. The positioning and gripping device for a board unloader according to claim 1, characterized in that: The pressing part further comprises a connecting plate fixedly installed on the upper ends of the two pressing strips, a plurality of first supporting columns are fixedly installed on the upper end of the connecting plate, a lifting plate is fixedly installed on the upper ends of the first supporting columns and penetrates through the fixed plate, a third air cylinder is fixedly installed on the lower end of the lifting plate, and the extension section of the third air cylinder is fixedly connected with the upper end of the connecting plate.

3. The positioning and gripping device for a circuit board unboarder according to claim 1, wherein: The deviation rectifying part further comprises support plates slidably installed on the lower end of the fixed plate and corresponding to the extrusion plates, the extrusion plates are fixedly installed on the corresponding support plates, a double-way air cylinder is fixedly installed on the lower end of the fixed plate, the two extension sections of the double-way air cylinder are fixedly connected with the two support plates, a push-pull plate is slidably installed on the opposite faces of the two longitudinal sections of the moving frame through a pair of guide columns, and the end of the push-pull plate away from the guide column is installed with a fixed seat through a pair of supporting rods.

4. The positioning and gripping device for a circuit board unboarder according to claim 3, wherein: The positioning block is slidably installed on the fixed seat through a first elastic element, the first elastic element comprises an axle plate, two front and back symmetrical axle plates are fixedly installed on the end of the fixed seat away from the corresponding supporting rod, an axle rod is fixedly installed between the two axle plates, a pair of axle seats are slidably installed on the axle rod, the axle seats are fixedly connected with the corresponding positioning blocks, and a reset spring is installed between the two axle seats and the corresponding axle plates.

5. The positioning and gripping device for a circuit board unboarder according to claim 1, wherein: The pressing block is slidably installed on the positioning block through a second elastic element, the second elastic element comprises a countersunk hole, a pair of countersunk holes are formed on the upper end of the vertical section of the positioning block, a limiting column corresponding to the countersunk hole is slidably installed on the lower end of the pressing block, a compression spring is installed between the upper hole bottom wall of the countersunk hole and the lower end of the corresponding pressing block and is sleeved on the corresponding limiting column, a first air cylinder corresponding to the pressing block is fixedly installed on the lower end of the fixed plate, and the extension section of the first air cylinder is in abutment with the upper end of the corresponding pressing block.

6. The positioning and gripping device for a circuit board unboarder according to claim 4, wherein: The magnetic attraction element comprises a slot, the end of the fixed seat away from the corresponding supporting rod is provided with a slot, a first electromagnet is installed in the slot, a magnetic plate is arranged on the end of the axle seat away from the corresponding positioning block, a groove is formed on the upper end of the vertical section of the positioning block, and a second electromagnet is installed in the groove.

7. The positioning and gripping device for a board unloader according to claim 6, characterized in that: The magnetic plate is fixedly installed with positioning columns corresponding to the shaft seats at one end away from the first electromagnet, and the magnetic plate and the shaft seat are fixedly installed with tension springs sleeved on the corresponding positioning columns.

8. The positioning and gripping device for a circuit board underpaneling machine of claim 3 wherein: The rear end of the fixed plate is fixedly installed with two left-right symmetrical sliding sleeves, the rear vertical section of the support frame is provided with a rectangular slot corresponding to the sliding sleeve, the sliding sleeve is slidably penetrated through the corresponding rectangular slot, and the two longitudinal sections of the moving frame are fixedly installed with a sliding rod slidably penetrated through the two sliding sleeves.

9. The positioning and gripping device for a board unloader according to claim 1, characterized in that: The two longitudinal sections of the moving frame are fixedly installed with the second air cylinders at the opposite ends, the telescopic section of the second air cylinder is slidably penetrated through the moving frame and fixedly connected with the corresponding push-pull plate, the upper end of the fixed plate is fixedly installed with the fourth air cylinder, and the telescopic section of the fourth air cylinder is fixedly connected with the right longitudinal section of the moving frame.

10. The positioning and gripping device for a board unloader according to claim 1, characterized in that: The upper end of the support frame is fixedly installed with a hydraulic cylinder, the telescopic section of the hydraulic cylinder is slidably penetrated through the rear of the support frame and fixedly installed with a driving plate, and the driving plate and the fixed plate are fixedly installed with a plurality of second support columns.

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