CN113677183B

CN113677183B - SMT paster detects conveyor

Info

Publication number: CN113677183B
Application number: CN202110820245.9A
Authority: CN
Inventors: 周益和; 杨达利
Original assignee: Shenzhen Chonvo Intelligent Co ltd
Current assignee: Shenzhen Chonvo Intelligent Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-09-16
Anticipated expiration: 2041-07-20
Also published as: CN113677183A

Abstract

The application relates to an SMT patch detection conveying device, which comprises a base and two supporting plates, wherein the two supporting plates are vertically arranged and are parallel to each other; the upper surface of the base is fixedly provided with a slide rail which is vertical to the supporting plate, and the lower part of the supporting plate is fixedly provided with a slide block; a group of belt wheels are respectively arranged on the opposite sides of the two supporting plates, and a conveying belt is wound on each belt wheel of the same group; the base is provided with a double-shaft stretching motor, the double-shaft stretching motor is positioned between the two supporting plates and comprises a motor main body and a motor shaft, two ends of the motor shaft respectively penetrate out of two opposite sides of the motor main body, two ends of the motor shaft are respectively and coaxially connected with a lead screw, the lead screws are perpendicular to the supporting plates, the thread directions of the two lead screws are opposite, and nuts matched with the lead screws are respectively fixedly arranged on the two supporting plates; the base is fixedly provided with a cover body, and the inner side of the cover body is provided with an automatic optical detector. This application can make the staff comparatively easily will wait to detect the PCB of SMT paster and place the quilt position of preferred on the conveyer belt.

Description

SMT paster detects conveyor

Technical Field

The application relates to the field of printed circuit board production technology, in particular to an SMT patch detection conveying device.

Background

The SMT paster refers to the abbreviation of a series of process flows processed on the basis of a PCB, and the PCB is a printed circuit board. SMT is a surface assembly technique, the most popular technique and process in the electronic assembly industry.

The PCB needs to use the automatic optical detection technology to detect the accuracy of the positions of various patch elements and the welding quality of the patch elements after the SMT patch production and processing. PCB boards can range from fine pitch high density boards to low density large size boards.

SMT paster detection device includes conveyer belt and automatic optical detection device usually, and the PCB board that the conveyer belt will be through after SMT paster production and processing is carried to automatic optical detection device's detection area and is accepted the detection, but because different PCB's size is different, when PCB's size is less, whether the staff need to see visually judge that PCB lies in the conveyer belt better by the position that receives to the efficiency of putting the PCB board to the staff produces the influence.

Disclosure of Invention

In order to make the staff comparatively easily will wait to detect the PCB of SMT paster and place the quilt position that receives of preferred on the conveyer belt, this application provides a SMT paster detects conveyor.

The application provides a SMT paster detects conveyor adopts following technical scheme:

the SMT patch detection conveying device comprises a base and two supporting plates, wherein the two supporting plates are vertically arranged and are parallel to each other; a sliding rail is fixedly arranged on the upper surface of the base and is perpendicular to the supporting plate, a sliding block is fixedly arranged on the lower portion of the supporting plate, and the sliding block and the sliding rail are connected in a sliding mode along the length direction of the sliding rail; a group of belt wheels are respectively arranged on the opposite sides of the two supporting plates, conveying belts are wound on the belt wheels of the same group, and the two conveying belts are respectively used for lapping the two opposite sides of the PCB; the base is provided with a double-shaft extension motor, the double-shaft extension motor is positioned between the two support plates and comprises a motor main body and a motor shaft, two ends of the motor shaft respectively penetrate out of two opposite sides of the motor main body, two ends of the motor shaft are respectively and coaxially connected with a lead screw, the lead screws are perpendicular to the support plates, the thread directions of the two lead screws are opposite, and nuts matched with the lead screws are respectively fixedly arranged on the two support plates; the base sets firmly the cover body, the cover body covers simultaneously and establishes two the backup pad, the inboard of the cover body is equipped with automatic optical detector, automatic optical detector is located two between the backup pad.

By adopting the technical scheme, when the double-shaft extension motor rotates, the screw rods fixed at two ends of the motor shaft of the double-shaft extension motor rotate simultaneously, so that the two nuts are driven to approach towards each other simultaneously, namely the two support plates are driven to approach towards or depart from each other, and the distance between the two conveyer belts positioned on the two support plates is changed, so that the two conveyer belts can be lapped with PCBs of different sizes; the two screw rods are driven by the same double-shaft extension motor, so that the two support plates can be reliably and simultaneously close to each other, and after the distance adjustment of the two support plates is completed, the center of a PCB (printed circuit board) placed between the two conveying belts can be automatically aligned to the automatic optical detector in the initial state, so that the automatic optical detector can detect the PCB conveniently; above-mentioned in-process, the staff need not to visualize and aligns PCB, and is comparatively convenient, is favorable to improving work efficiency.

Optionally, each set of belt pulleys comprises a driving wheel and a driven wheel, and an axis of the driving wheel in each set of belt pulleys is overlapped with an axis of the driven wheel in the other set of belt pulleys; a telescopic cylinder is connected between the coaxial driving wheels and the coaxial driven wheels, the telescopic cylinder comprises a first cylinder body and a second cylinder body, the first cylinder body is spliced with the second cylinder body, one end of the first cylinder body, far away from the second cylinder body, is fixedly connected with one of the driving wheels, and one end of the second cylinder body, far away from the first cylinder body, is fixedly connected with the corresponding driven wheel; the diameter of the telescopic cylinder is smaller than or equal to that of the driving wheel, and the diameter of the telescopic cylinder is smaller than or equal to that of the driven wheel; two together around being equipped with the elastic mesh belt between the telescopic cylinder, the inboard edge of the double-phase offside of elastic mesh belt is equipped with the strip arch respectively, the strip is protruding to be followed the full length setting in edge of elastic mesh belt, first barrel is kept away from the periphery wall of the one end of second barrel is equipped with the positioning ring groove, the second barrel is kept away from the periphery wall of the one end of first barrel also is equipped with the positioning ring groove, the positioning ring groove with the protruding adaptation of strip.

By adopting the technical scheme, when the two supporting plates are close to each other, the distance between the first cylinder and the second cylinder is correspondingly changed, so that the length of the telescopic cylinder is correspondingly changed; the elastic mesh belt is wound and connected with the two telescopic cylinders, and two opposite sides of the elastic mesh belt are respectively fixed with the end parts of the first cylinder and the second cylinder along the axial direction through the matching of the strip-shaped bulges and the positioning ring grooves; because the elastic net belt has elasticity, when the lengths of the two telescopic cylinders are changed, the size of the elastic net belt along the axial direction of the telescopic cylinders is correspondingly changed; the elastic mesh belt keeps synchronous operation with the conveying belts under the driving of the belt wheel, has an auxiliary supporting effect on the PCB lapped between the two conveying belts, and can reduce the condition that the PCB drops to the base because of careless taking and placing of workers, thereby being beneficial to protecting the PCB.

Optionally, the outer diameters of the first cylinder and the second cylinder are the same, a step hole is formed in the inner peripheral side of one end, close to the second cylinder, of the first cylinder, and an insertion part matched with the step hole extends from one end, close to the first cylinder, of the second cylinder.

Through adopting above-mentioned technical scheme, same barrel passes through the step hole with the second barrel is pegged graft with grafting portion to realize length adjustment's demand.

Optionally, the insertion part is sleeved with a compression spring, one end of the compression spring abuts against the end face of the first cylinder, the other end of the compression spring abuts against the end face of the second cylinder, and the outer diameter of the compression spring is equal to that of the telescopic cylinder.

Through adopting above-mentioned technical scheme, compression spring's outer peripheral face is the same with the external diameter of a flexible section of thick bamboo, and when elasticity guipure and two flexible sections of thick bamboo were around establishing, the internal surface of elasticity guipure received compression spring's supporting role, can reduce the condition that the elasticity guipure appears collapsing at the position at grafting portion place to be favorable to making the surface of elasticity guipure keep leveling.

Optionally, the outer diameter of the first barrel is the same as that of the second barrel, a plurality of gear shaping teeth extend from one end of the first barrel, which is close to the second barrel, a plurality of notches for the gear shaping teeth to be inserted in the axial direction are formed in one end of the second barrel, which is close to the first barrel, a positioning barrel is coaxially and fixedly arranged on the second barrel through the inner peripheral wall, and the outer peripheral surface of the positioning barrel is abutted to the inner side surface of each gear shaping tooth.

Through adopting above-mentioned technical scheme, meshing connection between the gear shaping of first barrel and the breach of second barrel is favorable to reducing the condition that the elastic mesh belt appears collapsing in the region that is close to the connection position of first barrel and second barrel to through the peripheral face that makes the medial surface butt location section of thick bamboo of the gear shaping of first barrel, can reduce and radially misplace between gear shaping and the breach and the bad condition of meshing appears.

Optionally, two the action wheel is close to the protruding spliced pole that is equipped with in one side of a flexible section of thick bamboo, two from the driving wheel is close to one side of a flexible section of thick bamboo also protruding spliced pole that is equipped with, the spliced pole is equipped with the external screw thread, first barrel with the internal perisporium of second barrel be equipped with the internal thread of external screw thread adaptation.

The telescopic cylinder is positioned between the two support plates, and the length of the telescopic cylinder has a certain variation range, so that the distance between the two support plates is limited by the telescopic length of the telescopic cylinder; through adopting above-mentioned technical scheme, first barrel and second barrel all with spliced pole threaded connection, make first barrel and second barrel and spliced pole can dismantle and be connected, are convenient for change the first barrel and the second barrel of different length to improve the adaptability of integrated device to unidimensional PCB.

Optionally, the positioning ring groove is located between two ends of the connecting column.

Through adopting above-mentioned technical scheme, the effort of elastic mesh belt to a flexible section of thick bamboo is comparatively concentrated in the position at positioning ring groove place, through making positioning ring groove be located between the both ends of spliced pole, makes the spliced pole have the auxiliary stay effect to the both ends of a flexible section of thick bamboo to be favorable to improving the stability in position of elastic mesh belt.

Optionally, the screwing direction between the internal thread and the external thread is arranged along the circulating running direction of the elastic mesh belt.

Through adopting above-mentioned technical scheme, first barrel and second barrel all have frictional force to the elasticity guipure, and the elasticity guipure has reverse frictional force to first barrel and second barrel simultaneously, and the circulation direction of operation of elasticity guipure is followed to the frictional force direction of first barrel and second barrel to the elasticity guipure, and when the circulation operation of elasticity guipure, the threaded connection relation between internal thread and the external screw thread is strengthened to the frictional force messenger of elasticity guipure to first barrel and second barrel to reduce the relative not hard up condition of appearing between internal thread and the external screw thread.

Optionally, two opposite sides of the supporting plate are respectively provided with two limiting blocks, two telescopic cylinders are located between the two limiting blocks on the same side, one side of each limiting block, which is close to the elastic mesh belt, is provided with an inner concave cambered surface, the curvature center line of the inner concave cambered surface coincides with the center line of the telescopic cylinder, a gap is reserved between the inner concave cambered surface and the surface of the elastic mesh belt, and the width of the gap between the inner concave cambered surface and the elastic mesh belt is smaller than the height of the strip-shaped protrusion protruding out of the inner surface of the elastic mesh belt.

Through adopting above-mentioned technical scheme, form the clearance between the indent cambered surface of stopper and the elasticity guipure surface, make the state that keeps separating between the indent cambered surface of stopper and the elasticity guipure, be favorable to reducing the friction damping, simultaneously because the width in above-mentioned clearance is less than the height that strip arch stands out the internal surface of elasticity guipure, can reduce the strip arch and deviate from the condition of positioning ring groove completely.

Optionally, the limiting block is made of a polytetrafluoroethylene material.

Through adopting above-mentioned technical scheme, polytetrafluoroethylene material has excellent self-lubricating performance, and when the edge deformation of elasticity guipure was dug and the indent cambered surface butt of stopper, the frictional damping between elasticity guipure and the indent cambered surface is less, is favorable to reducing the damage effect of frictional force to the elasticity guipure.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the two support plates of the double-shaft extension motor are close to or far away from each other at the same time, and after the distance adjustment of the two support plates is completed, the center of the PCB placed between the two conveying belts is easy to automatically align with the automatic optical detector in the initial state, so that the detection of the PCB by the automatic optical detector is facilitated; in the process, workers do not need to align the PCB visually, so that the alignment process is convenient and fast, and the working efficiency is improved;

2. by arranging the telescopic cylinders and the elastic mesh belts wound on the telescopic cylinders, when the lengths of the two telescopic cylinders are changed, the sizes of the elastic mesh belts along the axial directions of the telescopic cylinders are correspondingly changed; the elastic mesh belt has an auxiliary supporting effect on the PCB lapped between the two conveying belts, and the elastic mesh belt can reduce the condition that the PCB drops on the base because of careless taking and placing of workers, so that the protection of the PCB is facilitated.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

Fig. 2 is a schematic diagram of embodiment 1 for showing the connection relationship between the support plate and the pulley.

Fig. 3 is a partial enlarged view at a in fig. 2.

Fig. 4 is a sectional view showing a structure of a telescopic cylinder according to embodiment 1.

Fig. 5 is a partial enlarged view at B in fig. 4.

Fig. 6 is a schematic view of a structure for embodying the telescopic cylinder of embodiment 2.

Description of reference numerals: 1. a base; 2. a support plate; 3. a pulley; 31. a driving wheel; 32. a driven wheel; 33. connecting columns; 34. a conveyor belt; 4. a cover body; 5. an automated optical detector; 6. a slide rail; 61. a slider; 7. a double-shaft extension motor; 71. a motor main body; 72. a motor shaft; 721. a screw rod; 722. a nut; 8. a telescopic cylinder; 81. a first cylinder; 811. a stepped bore; 812. gear shaping; 82. a second cylinder; 821. a plug-in part; 822. a notch; 83. a positioning ring groove; 84. a compression spring; 85. a positioning cylinder; 9. an elastic mesh belt; 91. strip-shaped bulges; 10. a limiting block; 101. concave cambered surface.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses SMT paster detects conveyor.

Example 1

Referring to fig. 1 and 2, the SMT patch detection and conveying device includes a base 1 and two support plates 2, the two support plates 2 are vertically arranged and parallel to each other, and the two support plates 2 are connected with the base 1 in a sliding manner in a direction perpendicular to the two support plates 2; a group of belt wheels 3 are respectively arranged on the opposite sides of the two support plates 2, the belt wheels 3 in the same group are wound with a conveying belt 34, and the two conveying belts 34 are respectively used for lapping the two opposite sides of the PCB; the base 1 sets firmly the cover body 4, and two backup pads 2 are established to the cover body 4 cover simultaneously, and the inboard of the cover body 4 is equipped with automatic optical detector 5, and automatic optical detector 5 is located between two backup pads 2.

When SMT patch detection is carried out, two opposite sides of the PCB processed by SMT patch are lapped on the two conveyer belts 34, so that the conveyer belts 34 convey the PCB; when the PCBs with different sizes and specifications need to be replaced, the two supporting plates 2 can slide to be close to or far away from each other so as to adapt to the PCBs with different specifications.

Referring to fig. 1 and 2, two slide rails 6 are fixedly arranged on the upper surface of a base 1, the two slide rails 6 are parallel to each other and perpendicular to a support plate 2, the two support plates 2 are positioned above the two slide rails 6, two slide blocks 61 are fixedly arranged on the lower portions of the two support plates 2 respectively, the two slide blocks 61 positioned on the same support plate 2 and the two slide rails 6 are arranged in a one-to-one correspondence manner, and the two slide blocks 61 positioned on the same support plate 2 are connected with the corresponding slide rails 6 in a sliding manner along the length direction of the slide rails 6; the supporting plate 2 and the base 1 are connected in a sliding manner along a direction perpendicular to the supporting plate 2 through the sliding block 61 and the sliding rail 6.

Referring to fig. 1 and 2, a double-shaft extension motor 7 is fixedly mounted on the upper surface of the base 1, and the double-shaft extension motor 7 is positioned between the two support plates 2; the double-shaft extension motor 7 comprises a motor main body 71 and a motor shaft 72, wherein two ends of the motor shaft 72 respectively penetrate out of two opposite sides of the motor main body 71; two ends of the motor shaft 72 are respectively coaxially connected with a screw rod 721, the specifications of the two screw rods 721 are the same, the screw rods 721 are perpendicular to the support plates 2, one end of each of the two screw rods 721, which is far away from the biaxial stretching motor 7, penetrates through one of the support plates 2, and nuts 722 matched with the screw rods 721 are respectively fixedly arranged on the two support plates 2; the operation of the biaxial stretching motor 7 simultaneously drives the two supporting plates 2 to be close to each other, the two supporting plates 2 are simultaneously close to or far away from each other in opposite directions under the drive of the same biaxial stretching motor 7, so that the moving distances of the two supporting plates 2 are the same, and the relative positions of the central axes of different PCBs relative to the automatic optical detector 5 are kept stable, so that the relative position relation of the automatic optical detector 5 to the PCBs is easily controlled.

Referring to fig. 2 and 3, each set of pulleys 3 comprises a driving pulley 31 and a driven pulley 32, the driving pulley 31 and the driven pulley 32 have the same diameter, wherein the driving pulley 31 is driven by a servo motor; the axis of the driving pulley 31 in each set of pulleys 3 coincides with the axis of the driven pulley 32 in the other set of pulleys 3; a telescopic cylinder 8 is connected between the coaxial driving wheel 31 and the coaxial driven wheel 32, and the diameter of the telescopic cylinder 8 is smaller than that of the driving wheel 31 and the driven wheel 32; an elastic mesh belt 9 is wound between the two telescopic cylinders 8; the inner side surfaces of the two side edges of the elastic mesh belt 9 are respectively convexly provided with a strip-shaped bulge 91, the strip-shaped bulges 91 are arranged along the whole length of the edge of the elastic mesh belt 9, and the two ends of the telescopic cylinder 8 are respectively provided with a positioning ring groove 83 matched with the strip-shaped bulges 91.

When the two support plates 2 are close to or far away from each other, the length of the telescopic cylinder 8 between the two support plates 2 is correspondingly changed; in the process, because the strip-shaped bulges 91 at the two sides of the elastic mesh belt 9 are matched with the positioning ring grooves 83, the relative positions of the edges at the two sides of the elastic mesh belt 9 and the two ends of the telescopic cylinder 8 are kept stable respectively, so that the width of the elastic mesh belt 9 is changed along with the expansion of the telescopic cylinder 8; the elastic mesh belt 9 has an auxiliary supporting function for the PCB lapped on the two conveyer belts 34, and reduces the condition that the PCB is carelessly dropped on the base 1 below in the process of placing the PCB by a worker.

Referring to fig. 4 and 5, the telescopic cylinder 8 comprises a first cylinder body 81 and a second cylinder body 82, the first cylinder body 81 and the second cylinder body 82 have the same diameter, one of two positioning ring grooves 83 of the telescopic cylinder 8 is located at one end of the first cylinder body 81 far away from the second cylinder body 82, and the other positioning ring groove 83 is located at one end of the second cylinder body 82 far away from the first cylinder body 81; one end of the first cylinder 81 is coaxially connected with the driving wheel 31, and a step hole 811 is formed in the inner peripheral side of one end of the first cylinder 81, which is far away from the driving wheel 31; one end of the second cylinder 82 is coaxially connected with the corresponding driven wheel 32, and one end of the second cylinder 82, which is far away from the driven wheel 32, extends to form an insertion part 821 matched with the stepped hole 811; the first cylinder 81 is inserted into the insertion part 821 of the second cylinder 82 through the stepped hole 811; when the two support plates 2 approach or separate from each other, the first cylinder 81 and the second cylinder 82 of the telescopic cylinder 8 approach or separate from each other, so that the length of the telescopic cylinder 8 is changed.

Referring to fig. 2, 4 and 5, the insertion part 821 of the second cylinder 82 is sleeved with a compression spring 84, one end of the compression spring 84 abuts against the end surface of the first cylinder 81, the other end of the compression spring 84 abuts against the end surface of the second cylinder 82, and the compression spring 84 is subjected to pre-pressure of the first cylinder 81 and the second cylinder 82; the outer diameter of the compression spring 84 is equal to the outer diameter of the telescopic cylinder 8, so that the inner circumferential surface of the elastic mesh belt 9 abuts against the outer circumferential surface of the telescopic cylinder 8 and the outer circumferential surface of the compression spring 84 at the same time, which is beneficial to reducing the situation that the area of the elastic mesh belt 9 between the end surfaces of the opposite ends of the first cylinder 81 and the second cylinder 82 collapses, and thus the outer surface of the elastic mesh belt 9 is relatively flat.

Referring to fig. 4 and 5, a connecting column 33 is convexly arranged on one side of the two driving wheels 31 close to the telescopic cylinder 8, and a connecting column 33 is convexly arranged on one side of the two driven wheels 32 close to the telescopic cylinder 8; the connecting column 33 is provided with an external thread 331, and the inner peripheral walls of the first cylinder 81 and the second cylinder 82 are provided with an internal thread matched with the external thread 331; the screwing direction between the internal thread and the external thread 331 is set along the circulating running direction of the elastic mesh belt 9.

The telescopic cylinder 8 drives the elastic mesh belt 9 to circularly operate through friction force, meanwhile, the elastic mesh belt 9 has reverse friction force on the first cylinder 81 and the second cylinder 82, the elastic mesh belt 9 moves along the direction of the friction force of the first cylinder 81 and the second cylinder 82 along the direction of the circular operation of the elastic mesh belt 9, when the elastic mesh belt 9 circularly operates, the friction force of the elastic mesh belt 9 on the first cylinder 81 and the second cylinder 82 strengthens the threaded connection relation between the internal thread and the external thread 331, and therefore the situation that relative looseness occurs between the internal thread and the external thread 331 is reduced.

Referring to fig. 3 and 4, when the telescopic cylinder 8 is screwed to the connecting column 33, the positioning ring groove 83 is located between the two ends of the connecting column 33 which are closer; when two backup pads 2 kept away from each other, the cooperation of annular positioning groove 83 and strip-shaped protrusion 91 is passed through at the both ends of a telescopic cylinder 8, and when driving elastic mesh belt 9 to extend along width direction, elastic mesh belt 9 is great to the elastic force at the both ends of a telescopic cylinder 8 this moment, and annular positioning groove 83 through making a telescopic cylinder 8 is located between the both ends of spliced pole 33, makes spliced pole 33 play the auxiliary stay effect to the both ends of a telescopic cylinder 8.

Referring to fig. 2 and 3, two limiting blocks 10 are respectively connected to opposite sides of two supporting plates 2 through fasteners, the limiting blocks 10 are made of polytetrafluoroethylene materials, the two limiting blocks 10 are respectively located at two opposite sides of an elastic mesh belt 9, two telescopic cylinders 8 are located between the two limiting blocks 10, an inner concave cambered surface 101 is arranged at one side of each limiting block 10 close to the elastic mesh belt 9, the curvature center line of the inner concave cambered surface 101 is overlapped with the axis of one telescopic cylinder 8 which is closer, a gap is reserved between the inner concave cambered surface 101 and the surface of the elastic mesh belt 9, the width of the gap between the inner concave cambered surface 101 and the elastic mesh belt 9 is smaller than the height of the strip-shaped protrusion 91 protruding out of the inner surface of the elastic mesh belt 9, under the blocking action of the limiting block 10, the strip-shaped protrusions 91 on the elastic mesh belt 9 are not easy to completely fall off from the positioning ring groove 83, so that the connection relationship between the strip-shaped protrusions 91 and the positioning ring groove 83 is kept; and when the edge of the elastic net belt 9 is deformed and turned up and is abutted to the concave cambered surface 101, because the polytetrafluoroethylene has self-lubricating performance, the friction damping between the elastic net belt 9 and the concave cambered surface 101 can be reduced.

The implementation principle of the SMT patch detection and conveying device is as follows: the double-shaft extension motor 7 drives the two support plates 2 to move towards or away from each other through the screw 721 and the nut 722, and at the moment, the distance between the two conveyer belts 34 on the two support plates 2 is changed, so that the two conveyer belts 34 can be lapped with PCBs of different sizes; the two support plates 2 approach to each other relatively under the drive of the same double-shaft extension motor 7, and after the positions of the two support plates 2 are adjusted, the center of the PCB placed between the two conveyor belts 34 is easy to align with the automatic optical detector 5 in the initial state, so that the automatic optical detector 5 is favorable for detecting the PCB; above-mentioned in-process, the staff need not to visualize and aligns PCB, and is comparatively convenient, is favorable to improving work efficiency.

Example 2

Referring to fig. 6, the present embodiment is different from embodiment 1 in that: the telescopic cylinder 8 comprises a first cylinder 81 and a second cylinder 82, the outer diameters of the first cylinder 81 and the second cylinder 82 are the same, one end of the first cylinder 81, which is close to the second cylinder 82, extends to form a plurality of gear shaping 812, each gear shaping 812 is distributed along the circumference of the center line of the first cylinder 81 in an array manner, one end of the second cylinder 82, which is close to the first cylinder 81, is provided with a plurality of notches 822 for the gear shaping 812 to be inserted in along the axial direction, and the gear shaping 812 of the first cylinder 81 is in meshing connection with the notches 822 of the second cylinder 82, so that the situation that the elastic mesh belt 9 collapses in an area close to the connection part of the first cylinder 81 and the second cylinder 82 is favorably reduced; the second cylinder 82 is coaxially and fixedly provided with a positioning cylinder 85 through the inner peripheral wall, the outer diameter of the positioning cylinder 85 is equal to the inner diameter of the second cylinder 82, the outer peripheral surface of the positioning cylinder 85 is abutted against the inner side surface of each gear shaping 812, and the positioning cylinder 85 can reduce the occurrence of meshing dislocation between the gear shaping 812 and the notch 822.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a SMT paster detects conveyor which characterized in that: the device comprises a base (1) and two supporting plates (2), wherein the two supporting plates (2) are vertically arranged and are parallel to each other; a sliding rail (6) is fixedly arranged on the upper surface of the base (1), the sliding rail (6) is perpendicular to the supporting plate (2), a sliding block (61) is fixedly arranged on the lower portion of the supporting plate (2), and the sliding block (61) is connected with the sliding rail (6) in a sliding mode along the length direction of the sliding rail (6); a group of belt wheels (3) are respectively arranged on the opposite sides of the two supporting plates (2), a conveying belt (34) is wound on each belt wheel (3) of the same group, and the two conveying belts (34) are respectively used for lapping the two opposite sides of the PCB; the base (1) is provided with a double-shaft stretching motor (7), the double-shaft stretching motor (7) is located between the two support plates (2), the double-shaft stretching motor (7) comprises a motor main body (71) and a motor shaft (72), two ends of the motor shaft (72) penetrate out of two opposite sides of the motor main body (71), two ends of the motor shaft (72) are respectively and coaxially connected with a screw rod (721), the screw rod (721) is perpendicular to the support plates (2), the thread directions of the two screw rods (721) are opposite, and nuts (722) matched with the screw rods (721) are fixedly arranged on the two support plates (2) respectively; the base (1) is fixedly provided with a cover body (4), the cover body (4) is simultaneously covered with the two support plates (2), the inner side of the cover body (4) is provided with an automatic optical detector (5), and the automatic optical detector (5) is positioned between the two support plates (2); each set of pulleys (3) comprises a driving pulley (31) and a driven pulley (32), the axis of the driving pulley (31) in each set of pulleys (3) is coincident with the axis of the driven pulley (32) in the other set of pulleys (3); a telescopic cylinder (8) is connected between the driving wheel (31) and the driven wheel (32) which are coaxial, the telescopic cylinder (8) comprises a first cylinder body (81) and a second cylinder body (82), the first cylinder body (81) is inserted into the second cylinder body (82), one end, far away from the second cylinder body (82), of the first cylinder body (81) is fixedly connected with one of the driving wheels (31), and one end, far away from the first cylinder body (81), of the second cylinder body (82) is fixedly connected with the corresponding driven wheel (32); the diameter of the telescopic cylinder (8) is smaller than or equal to that of the driving wheel (31), and the diameter of the telescopic cylinder (8) is smaller than or equal to that of the driven wheel (32); an elastic mesh belt (9) is wound between the two telescopic cylinders (8) together, strip-shaped protrusions (91) are arranged on the inner side edges of two opposite sides of the elastic mesh belt (9) respectively, the strip-shaped protrusions (91) are arranged along the full length of the edge of the elastic mesh belt (9), a positioning ring groove (83) is formed in the peripheral wall of one end, away from the second cylinder (82), of the first cylinder (81), a positioning ring groove (83) is also formed in the peripheral wall of one end, away from the first cylinder (81), of the second cylinder (82), and the positioning ring groove (83) is matched with the strip-shaped protrusions (91); the outer diameter of the first cylinder body (81) is the same as that of the second cylinder body (82), a plurality of gear shaping teeth (812) are extended from one end, close to the second cylinder body (82), of the first cylinder body (81), a plurality of notches (822) for the gear shaping teeth (812) to be inserted in the axial direction are formed in one end, close to the first cylinder body (81), of the second cylinder body (82), a positioning cylinder (85) is coaxially and fixedly arranged on the second cylinder body (82) through the inner peripheral wall, and the outer peripheral surface of the positioning cylinder (85) is abutted to the inner side surface of each gear shaping tooth (812).

2. An SMT patch testing conveyor as claimed in claim 1, wherein: the outer diameter of the first cylinder body (81) is the same as that of the second cylinder body (82), a step hole (811) is formed in the inner peripheral side of one end, close to the second cylinder body (82), of the first cylinder body (81), and an insertion part (821) matched with the step hole (811) extends from one end, close to the first cylinder body (81), of the second cylinder body (82).

3. An SMT patch testing conveyor as claimed in claim 2, wherein: the inserting part (821) is sleeved with a compression spring (84), one end of the compression spring (84) is abutted to the end face of the first cylinder body (81), the other end of the compression spring (84) is abutted to the end face of the second cylinder body (82), and the outer diameter of the compression spring (84) is equal to that of the telescopic cylinder (8).

4. An SMT patch detection and delivery device according to claim 1, wherein: two action wheel (31) are close to protruding spliced pole (33) that is equipped with in one side of telescopic cylinder (8), two from driving wheel (32) being close to one side of telescopic cylinder (8) is protruding spliced pole (33) that is equipped with also, spliced pole (33) are equipped with the external screw thread, first barrel (81) with the internal perisporium of second barrel (82) be equipped with the internal thread of external screw thread adaptation.

5. An SMT patch detection and delivery device according to claim 4, wherein: the positioning ring groove (83) is positioned between two ends of the connecting column (33).

6. An SMT patch testing and conveying device according to claim 4, wherein: the screwing direction between the internal thread and the external thread is arranged along the circulating running direction of the elastic mesh belt (9).

7. An SMT patch testing conveyor as claimed in claim 1, wherein: two the opposite side of backup pad (2) is equipped with two stopper (10) respectively, two telescopic cylinder (8) are located two of homonymy between stopper (10), stopper (10) are close to one side of elasticity guipure (9) is equipped with indent cambered surface (101), the camber line of indent cambered surface (101) and nearer one the coincidence of the central line of telescopic cylinder (8), indent cambered surface (101) with leave the clearance between the surface of elasticity guipure (9), indent cambered surface (101) with clearance width between the elasticity guipure (9) is less than strip arch (91) are outstanding the height of the internal surface of elasticity guipure (9).

8. An SMT patch testing and feeding device according to claim 7, wherein: the limiting block (10) is made of polytetrafluoroethylene materials.