CN219893741U

CN219893741U - Automatic lower plate structure for circuit board surface mount machine

Info

Publication number: CN219893741U
Application number: CN202320598047.7U
Authority: CN
Inventors: 叶城
Original assignee: Hangzhou Wenchuang Electronic Co ltd
Current assignee: Hangzhou Wenchuang Electronic Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-10-24
Anticipated expiration: 2033-03-22

Abstract

The utility model discloses an automatic lower plate structure for a circuit board chip mounter, which comprises a circuit board, a lower plate frame fixed at a feed opening of the chip mounter, and a first sensor and a second sensor respectively arranged at a feed area and a discharge area inside the lower plate frame, wherein a conveying mechanism is arranged between the feed area and the discharge area of the lower plate frame, and two groups of protection and conveying mechanisms for protecting and conveying the circuit board to the discharge area are arranged on the conveying mechanism; after the circuit board is detected by the first sensor, the clamping part can be contracted by the width adjusting part on the holding mechanism to clamp the circuit board, then the conveying mechanism is started to operate, the circuit board is protected and conveyed to the discharging area by the clamping part, the elastic limiting part is extruded by the circuit board in the conveying process, after the circuit board passes over the elastic limiting part, the circuit board is limited by the elastic limiting part, the buffer part is used for buffering impact pressure of the conveyed circuit board, and meanwhile, the circuit board is fixed by matching with the elastic limiting part, so that rebound of the circuit board is avoided.

Description

Automatic lower plate structure for circuit board surface mount machine

Technical Field

The utility model belongs to the technical field related to circuit board processing, and particularly relates to an automatic lower plate structure for a circuit board chip mounter.

Background

After the circuit board is pasted through the surface mount device in the prior art, the circuit board can be output from the lower plate frame at the tail part of the surface mount device, and the conveying belt on the traditional lower plate frame is always in a working state, so that the energy consumption is increased, and the service life of the lower plate frame is shortened. The application number 201721232561.X discloses a simple chip mounter lower plate frame, which comprises a pair of conveying rods, one ends of the conveying rods are fixedly connected with a conveying workbench of the chip mounter, the other ends of the conveying rods are provided with fixing rods, the inner sides of the conveying rods are provided with moving grooves, two ends of the moving grooves are provided with motors, conveying belts are wound on the motors, a first sensor is arranged at a position, close to the conveying workbench, of the conveying rods, the first sensor is connected with the motors through controllers, a second sensor is arranged at a position, close to the fixing rods, of the conveying rods, and the second sensor is connected with the controllers; the first inductor and the second inductor are matched with the motor to realize the automation and the intellectualization of opening and closing of the conveyor belt, so that the purposes of reducing energy consumption and prolonging the service life of equipment are achieved.

However, the following problems still exist in the board mount technology of the chip mounter: above-mentioned chip mounter grillage is being carried the in-process of circuit board, because inertia circuit board is easy to strike to the direction of transfer, above-mentioned grillage is through setting up rubber gasket in circuit board impact position in order to play the cushioning effect down, and because rubber gasket's elasticity effect, kick-backs the circuit board easily, makes the circuit board appear dislocation or crooked condition easily, is inconvenient for the pick-up of manipulator, influences subsequent receipts material.

Disclosure of Invention

The utility model aims to provide an automatic lower plate structure for a circuit board surface mount machine, so as to solve the problem that the rebound of the circuit board in the background technology is easy to cause dislocation or skew.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the automatic lower plate structure for the circuit board chip mounter comprises a circuit board, a lower plate frame fixed at a feeding opening of the chip mounter, and a first sensor and a second sensor which are respectively arranged in a feeding area and a discharging area on the inner side of the lower plate frame, wherein a conveying mechanism is arranged between the feeding area and the discharging area of the lower plate frame, two groups of protection conveying mechanisms for protecting the circuit board to the discharging area are arranged on the conveying mechanism, and clamping mechanisms for buffering and clamping the circuit board are arranged at the discharging area on the inner side of the lower plate frame.

Preferably, the conveying mechanism comprises two first chain wheels and two second chain wheels which are symmetrically arranged, the first chain wheels and the second chain wheels are all arranged in the lower plate frame in a rotating mode, the first chain wheels and the second chain wheels are connected through chain transmission, a shaft rod is fixedly connected between the first chain wheels, a motor is fixedly arranged on the outer side of the lower plate frame, and an output shaft of the motor is fixedly connected with the shaft rod.

Preferably, the protecting and conveying mechanism comprises two symmetrically arranged U-shaped brackets, the two U-shaped brackets are respectively fixed on chain shafts of the chains at two sides, clamping components distributed at two sides of the circuit board are arranged at the outer sides of the two U-shaped brackets, and width adjusting components for adjusting and controlling the distance between the clamping components at two sides are arranged between the two U-shaped brackets.

Preferably, the clamping member includes a fixing plate, and a clamping plate is fixed to a side of the fixing plate facing the circuit board.

Preferably, the width adjusting part comprises a sleeve and a telescopic rod connected with the sleeve in a sliding manner, the outer end parts of the telescopic rod and the sleeve respectively penetrate through the U-shaped brackets on two sides and are fixedly connected with the fixing plate, a first electromagnetic block is fixed on the outer side of the telescopic rod, a second electromagnetic block is fixed on the outer side of the sleeve, and the first electromagnetic block is elastically connected with the second electromagnetic block through a first spring.

Preferably, the clamping mechanism comprises a supporting plate, the supporting plate is fixed on the inner side of the lower plate frame, an elastic limiting part is arranged on one side, close to the conveying mechanism, of the top of the supporting plate, and a buffer part is arranged on the other side of the top of the supporting plate.

Preferably, the elastic limiting piece comprises two symmetrically arranged hinge supports, a hook plate is arranged between the two hinge supports, the hook plate is rotationally connected with the hinge supports at two sides through a rotating shaft, and the connecting part is clamped with a torsion spring.

Preferably, the upper surface of the hook plate is provided with a groove, and the top of the supporting plate is fixed with a limiting plate attached to the groove.

Preferably, the buffer part comprises a baffle plate fixed on the top surface of the supporting plate and a buffer plate arranged in parallel with the baffle plate, wherein two guide rods are fixed on one surface of the buffer plate, which faces the baffle plate, the two guide rods are in sliding connection with the baffle plate, and the baffle plate is elastically connected with the buffer plate through a second spring.

Compared with the prior art, the utility model provides an automatic lower plate structure for a circuit board chip mounter, which has the following beneficial effects:

after the circuit board is detected by the first sensor, the clamping part can be contracted by the width adjusting part on the holding mechanism to clamp the circuit board, then the conveying mechanism is started to operate, the circuit board is protected and conveyed to the discharging area by the clamping part, the elastic limiting part is extruded by the circuit board in the conveying process, after the circuit board passes over the elastic limiting part, the circuit board is limited by the elastic limiting part, the buffer part is used for buffering impact pressure of the conveyed circuit board, and meanwhile, the circuit board is fixed by matching with the elastic limiting part, so that rebound of the circuit board is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and together with the embodiments of the utility model and do not constitute a limitation to the utility model, and in which:

fig. 1 is a schematic perspective view of an automatic lower plate structure for a circuit board mounter according to the present utility model;

fig. 2 is a schematic perspective view of an automatic lower plate structure for a circuit board mounter according to another aspect of the present utility model;

fig. 3 is a schematic top view of an automatic lower plate structure for a circuit board chip mounter according to the present utility model;

FIG. 4 is a schematic perspective view of a feeding mechanism according to the present utility model;

FIG. 5 is a schematic perspective view of a clamping mechanism according to the present utility model;

FIG. 6 is a schematic perspective view of a clamping mechanism according to another embodiment of the present utility model;

in the figure: 1. a lower plate frame; 2. a first sensor; 3. a second sensor; 4. a conveying mechanism; 41. a motor; 42. a shaft lever; 43. a first sprocket; 44. a second sprocket; 45. a chain; 5. a circuit board; 6. a holding mechanism; 61. a U-shaped bracket; 62. a fixing plate; 63. a clamping plate; 64. a telescopic rod; 65. a sleeve; 66. a first electromagnetic block; 67. a second electromagnetic block; 68. a first spring; 7. a clamping mechanism; 71. a supporting plate; 72. a baffle plate; 73. a buffer plate; 74. a guide rod; 75. a second spring; 76. a hinged support; 77. a hook plate; 78. a limiting plate; 79. a groove; 710. and (3) a torsion spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, 2 and 3, the present utility model provides a technical solution: the automatic lower plate structure for the circuit board chip mounter comprises a circuit board 5, a lower plate frame 1 fixed at a feed opening of the chip mounter, a first sensor 2 and a second sensor 3 which are respectively arranged in a feed area and a discharge area inside the lower plate frame 1, and a controller which is in signal connection with the first sensor 2 and the second sensor 3, wherein the first sensor 2 and the second sensor 3 are infrared sensors and are used for detecting the position of the circuit board 5, a conveying mechanism 4 is arranged between the feed area and the discharge area of the lower plate frame 1, the conveying mechanism 4 comprises two symmetrically arranged first chain wheels 43 and second chain wheels 44, the first chain wheels 43 and the second chain wheels 44 are all rotatably arranged in the lower plate frame 1, the first chain wheels 43 and the second chain wheels 44 are in transmission connection through a chain 45, a motor 41 is fixedly connected between the two first chain wheels 43, an output shaft of the motor 41 is fixedly connected with the shaft 42, the motor 41 can drive the two first chain wheels 43 to rotate through the motor 41, and the conveying mechanism 4 can drive the two first chain wheels 43 to rotate under the transmission effect of the chain 45 to the feed area of the circuit board 5.

Referring to fig. 4, two groups of protecting and conveying mechanisms 6 for protecting and conveying the circuit board 5 to the discharging area are arranged on the conveying mechanism 4, the protecting and conveying mechanisms 6 comprise two symmetrically arranged U-shaped brackets 61, the two U-shaped brackets 61 are respectively fixed on chain shafts of two side chains 45, clamping components distributed on two sides of the circuit board 5 are arranged on the outer sides of the two U-shaped brackets 61, each clamping component comprises a fixing plate 62, a clamping plate 63 is fixed on one side of the fixing plate 62, which faces the circuit board 5, width adjusting components for adjusting and controlling the distance between the two side clamping components are arranged between the two U-shaped brackets 61, each width adjusting component comprises a sleeve 65 and a telescopic rod 64 in sliding connection with the sleeve 65, the telescopic rod 64 and the outer end part of the sleeve 65 respectively penetrate through the two side U-shaped brackets 61 and are fixedly connected with the fixing plates 62, a first electromagnetic block 66 is fixed on the outer side of the telescopic rod 64, a second electromagnetic block 67 is fixed on the outer side of the sleeve 65, the first electromagnetic block 66 and the second electromagnetic block 67 is elastically connected through a first spring 68, after the circuit board 5 is discharged from a discharging port of the chip mounter, the width adjusting components are arranged on the four rectangular brackets 61, the telescopic rod 64 can fall into the side of the two U-shaped brackets 61 after the circuit board 5 falls into the rectangular brackets through the first electromagnetic block 67, and then the telescopic rod 67 is connected with the telescopic rod 67, and the telescopic rod 65 is enabled to be clamped with the second electromagnetic block 5, and then the telescopic rod 5 is enabled to pass through the telescopic rod 65, and the telescopic rod is enabled to be connected with the telescopic rod and then to be connected with the telescopic.

Referring to fig. 5 and 6, a clamping mechanism 7 for buffering and clamping the circuit board 5 is disposed at a discharging area of an inner side of the lower plate frame 1, the clamping mechanism 7 includes a supporting plate 71, the supporting plate 71 is fixed at the inner side of the lower plate frame 1, an elastic limiting member is disposed at one side of the top of the supporting plate 71 close to the conveying mechanism 4, the elastic limiting member includes two symmetrically disposed hinge supports 76, a hook plate 77 is disposed between the two hinge supports 76, the hook plate 77 is rotatably connected with the two hinge supports 76 through a rotating shaft, a torsion spring 710 is clamped at the connecting position, a groove 79 is formed on the upper surface of the hook plate 77, a limiting plate 78 attached to the groove 79 is fixed at the top of the supporting plate 71, the outer end of the hook plate 77 is in an arc shape capable of tilting upwards, the elastic force of the torsion spring 710 can be overcome under the extrusion of the circuit board 5, so that the circuit board 5 can be continuously conveyed to the discharging area, and after the circuit board 5 passes over the hook plate 77, the hook plate 77 can be automatically sprung under the elastic action of the torsion spring 710, and is blocked by the limiting plate 78, and the circuit board can be clamped by the limiting plate 78.

The top opposite side of layer board 71 is provided with buffer unit, buffer unit is including being fixed in baffle 72 on the layer board 71 top surface and the buffer plate 73 that sets up in parallel with baffle 72, the buffer plate 73 is fixed with two guide bars 74 towards the one side of baffle 72, two guide bars 74 and baffle 72 sliding connection, through second spring 75 elastic connection between baffle 72 and the buffer plate 73, when circuit board 5 is transported to the ejection of compact district, the collision pressure of circuit board 5 is cushioned to the accessible second spring 75, can cooperate the hook plate 77 to carry out the centre gripping to circuit board 5 simultaneously under the reaction of second spring 75, make circuit board 5 keep fixed position.

The working principle and the using flow of the utility model are as follows: after the circuit board 5 is discharged from a discharging port of the chip mounter and can fall onto four U-shaped brackets 61 which are distributed in a rectangular manner, the first sensor 2 detects the circuit board 5, then the first electromagnetic block 66 and the second electromagnetic block 67 are started to be electrified through the controller, the telescopic rod 64 and the sleeve 65 can be contracted by generating magnetic attraction force through the first electromagnetic block 66 and the second electromagnetic block 67, the two side clamping plates 63 clamp the circuit board 5, then the motor 41 is started to work to drive the two first chain wheels 43 to rotate, and the circuit board 5 can be driven to be transported from a feeding area to a discharging area under the transmission action of the chain 45;

in the process of transporting the circuit board 5 to the discharging area, the front end of the circuit board 5 starts to be contacted with the hook plate 77, the hook plate 77 can overcome the elasticity of the torsion spring 710 to rotate downwards under the extrusion of the circuit board 5, so that the circuit board 5 can continue to be transported to the discharging area, after the circuit board 5 passes over the hook plate 77, the hook plate 77 can automatically spring up under the elastic action of the torsion spring 710 and is blocked by the limit plate 78 to keep horizontal, the circuit board 5 can be clamped and limited, the impact pressure of the circuit board 5 is buffered through the second spring 75, the circuit board 5 can be clamped by matching with the hook plate 77 under the reaction of the second spring 75, the circuit board 5 is kept at a fixed position, the picking up of a manipulator is facilitated, the circuit board 5 falls into the discharging area and is detected by the second sensor 3, the controller closes the first electromagnetic block 66 and the second electromagnetic block 67 to be electrified, and simultaneously closes the motor 41, so that the automatic lower board processing of the circuit board 5 is realized.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Automatic lower plate structure for circuit board chip mounter, including circuit board (5), be fixed in lower grillage (1) of chip mounter feed opening and set up respectively in lower grillage (1) inboard feed zone and the first sensor (2) and second sensor (3) of ejection of compact district, its characterized in that: the feeding device is characterized in that a conveying mechanism (4) is arranged between the feeding area and the discharging area of the lower plate frame (1), two groups of protecting and conveying mechanisms (6) for protecting and conveying the circuit board (5) to the discharging area are arranged on the conveying mechanism (4), and a clamping mechanism (7) for buffering and clamping the circuit board (5) is arranged at the discharging area of the inner side of the lower plate frame (1).

2. The automatic lower plate structure for a circuit board mounter according to claim 1, wherein: the conveying mechanism (4) comprises two symmetrically arranged first chain wheels (43) and second chain wheels (44), the first chain wheels (43) and the second chain wheels (44) are all rotatably arranged in the lower plate frame (1), the first chain wheels (43) and the second chain wheels (44) are in transmission connection through a chain (45), a shaft rod (42) is fixedly connected between the two first chain wheels (43), a motor (41) is fixedly arranged on the outer side of the lower plate frame (1), and an output shaft of the motor (41) is fixedly connected with the shaft rod (42).

3. The automatic lower plate structure for a circuit board mounter according to claim 2, wherein: the protection and delivery mechanism (6) comprises two symmetrically arranged U-shaped brackets (61), the two U-shaped brackets (61) are respectively fixed on chain shafts of chains (45) at two sides, clamping components distributed at two sides of the circuit board (5) are arranged at the outer sides of the two U-shaped brackets (61), and width adjusting components for adjusting and controlling the distance between the clamping components at two sides are arranged between the two U-shaped brackets (61).

4. The automatic lower plate structure for a circuit board mounter according to claim 3, wherein: the clamping component comprises a fixing plate (62), and a clamping plate (63) is fixed on one side of the fixing plate (62) facing the circuit board (5).

5. The automatic bottom plate structure for a circuit board mounter according to claim 4, wherein: the width adjusting component comprises a sleeve (65) and a telescopic rod (64) which is slidably connected with the sleeve (65), the outer end parts of the telescopic rod (64) and the sleeve (65) respectively penetrate through U-shaped brackets (61) on two sides and are fixedly connected with a fixing plate (62), a first electromagnetic block (66) is fixed on the outer side of the telescopic rod (64), a second electromagnetic block (67) is fixed on the outer side of the sleeve (65), and the first electromagnetic block (66) and the second electromagnetic block (67) are elastically connected through a first spring (68).

6. The automatic lower plate structure for a circuit board mounter according to claim 1, wherein: the clamping mechanism (7) comprises a supporting plate (71), the supporting plate (71) is fixed on the inner side of the lower plate frame (1), an elastic limiting part is arranged on one side, close to the conveying mechanism (4), of the top of the supporting plate (71), and a buffer part is arranged on the other side of the top of the supporting plate (71).

7. The automatic bottom plate structure for a circuit board mounter according to claim 6, wherein: the elastic limiting piece comprises two symmetrically arranged hinge supports (76), a hook plate (77) is arranged between the two hinge supports (76), the hook plate (77) is rotationally connected with the hinge supports (76) at the two sides through a rotating shaft, and a torsion spring (710) is clamped at the joint.

8. The automatic bottom plate structure for a circuit board mounter according to claim 7, wherein: the upper surface of hook plate (77) has seted up recess (79), the top of layer board (71) is fixed with limiting plate (78) that laminate with recess (79).

9. The automatic bottom plate structure for a circuit board mounter according to claim 6, wherein: the buffer component comprises a baffle plate (72) fixed on the top surface of the supporting plate (71) and a buffer plate (73) arranged in parallel with the baffle plate (72), two guide rods (74) are fixed on one surface of the buffer plate (73) facing the baffle plate (72), the two guide rods (74) are in sliding connection with the baffle plate (72), and the baffle plate (72) is elastically connected with the buffer plate (73) through a second spring (75).