阅读说明：本技术 一种贴片电阻的筛选设备及其使用方法 (Screening device for chip resistor and using method thereof ) 是由 周海生 陈庆良 魏效振 于 2021-07-26 设计创作，主要内容包括：本发明公开了一种贴片电阻的筛选设备及其使用方法,包括筛分箱,所述筛分箱的顶部固定连接有进料斗,所述进料斗内壁的一侧倾斜设置,所述筛分箱内壁的中部固定连接有筛分板,所述筛分板分设为倾斜段和水平段,所述倾斜段和水平段的中部均开设有若干个等距分布的筛分口,所述筛分口内壁顶部的边沿切削为弧形倒角；本发明通过设置进料斗对投入的贴片电阻进行暂存,通过设置进料控制单元对进料斗内的贴片电阻进行均匀等量的输送,避免电阻之间互相堆叠挤压,导致筛分效率低,降低了筛分带来的电阻损坏率；通过设置水平段并在水平段的顶部设置阻挡块,对贴片电阻进行汇聚集中和进一步的筛分,提高筛分准确性。(The invention discloses screening equipment of a chip resistor and a using method thereof, and the screening equipment comprises a screening box, wherein the top of the screening box is fixedly connected with a feed hopper, one side of the inner wall of the feed hopper is obliquely arranged, the middle part of the inner wall of the screening box is fixedly connected with a screening plate, the screening plate is divided into an inclined section and a horizontal section, the middle parts of the inclined section and the horizontal section are respectively provided with a plurality of screening openings which are distributed at equal intervals, and the edge of the top of the inner wall of each screening opening is cut into an arc chamfer; according to the invention, the fed chip resistors are temporarily stored by arranging the feed hopper, and the chip resistors in the feed hopper are uniformly and equivalently conveyed by arranging the feed control unit, so that the resistors are prevented from being stacked and extruded with each other, the screening efficiency is low, and the resistor damage rate caused by screening is reduced; through setting up the horizontal segment and set up the piece that blocks at the top of horizontal segment, converge to the chip resistor and gather and further screening, improve the screening accuracy.)

1. The utility model provides a screening installation of chip resistor, includes screening case (1), top fixedly connected with feeder hopper (2) of screening case (1), middle part fixedly connected with screening board (3) of screening case (1) inner wall, its characterized in that, the middle part fixedly connected with shakeouts mechanism of screening case (1) inner wall, the fixed feeding control unit that is equipped with in bottom of feeder hopper (2) inner wall.

2. The screening device of the chip resistor, according to claim 1, characterized in that the screening plate (3) is divided into an inclined section (5) and a horizontal section (6), and a plurality of equally spaced screening openings (4) are formed in the middle of the inclined section (5) and the horizontal section (6); one side fixedly connected with at horizontal segment (6) top blocks piece (7), one side that blocks piece (7) sets up to the arcwall face.

3. The screening device of the chip resistor as claimed in claim 1, wherein a screening vibrator (8) is fixedly mounted on one side of the bottom of the inclined section (5), and the bottom of the screening vibrator (8) is fixedly connected with the center of the bottom of the inclined section (5) through a transmission rod.

4. The screening device of a chip resistor as claimed in claim 1, wherein the flattening mechanism comprises a flattening plate (9), a flattening vibrator (11) is fixedly mounted on one side of the bottom of the flattening plate (9), and a plurality of equally-distributed flattening stop blocks (10) are fixedly connected to the top of the flattening plate (9).

5. The screening device of the chip resistor as claimed in claim 1, wherein the feeding control unit comprises a feeding motor (12), the output end of the feeding motor (12) is fixedly connected with a feeding plate (13), and the end of the feeding plate (13) is provided with an inclined surface.

6. The screening device of the chip resistor as claimed in claim 2, wherein a discharging conveyer belt (14) is fixedly arranged on one side of the bottom of the screening box (1), a waste conveying belt (15) is fixedly arranged on one side of the bottom of the screening box (1), the discharging conveyer belt (14) and the waste conveyer belt (15) are arranged along opposite directions, the horizontal heights of the discharging conveying belt (14) and the waste conveying belt (15) are consistent, a waste outlet is arranged in front of the end part of the horizontal section (6) and the side wall of the screening box (1), the bottom of the waste outlet is arranged corresponding to the top of the waste conveying belt (15), the bottom of the horizontal section (6) is fixedly connected with a guide plate (16), one side of the guide plate (16) is arranged to be an inclined plane, and one side of the bottom of the guide plate (16) is fixedly connected with a material baffle plate (17).

7. The use method of the chip resistor screening equipment is characterized by comprising the following steps:

the method comprises the following steps: the chip resistor is guided and fed through the feeding hopper (2) and temporarily stored, the opening range of the feeding plate (13) is controlled through the feeding motor (12), and the feeding speed of the chip resistor is adjusted;

step two: vibrating the flattening plate (9) through a flattening vibrator (11), and dispersing and flattening the chip resistors on the flattening plate (9);

step three: the chip resistor is connected through the screening plate (3), and the screening vibrator (8) is used for vibrating the screening plate (3) to screen the chip resistor;

step four: the qualified screened products are received and sent out through a discharging conveyer belt (14), and the unqualified products are received and sent out through a waste conveyer belt (15);

step five: and the screened qualified products and the screened unqualified products are inspected and sorted again in the conveying process of the discharging conveying belt (14) and the waste conveying belt (15).

Technical Field

The invention relates to the technical field of chip resistors, in particular to screening equipment of a chip resistor and a using method thereof.

Background

The chip resistor is named as a chip type fixed resistor, has the advantages of moisture resistance, high temperature resistance, high reliability, accuracy and small tolerance of temperature coefficient and resistance value, and can greatly save the space cost of a circuit and make the design more refined.

In the in-process at chip resistor production or recycle, the resistance that often appears to accord with the specification is piled up the condition together with the resistance that does not accord with the specification mixes, in order to guarantee chip resistor's specification and quality, generally need filter chip resistor, current screening installation, generally put into screening installation in batches with the chip resistor of screening, the resistance of same batch once only drops into screening installation in, pile up the extrusion mutually between the resistance, lead to screening inefficiency, the resistance spoilage that the screening brought has also been improved simultaneously.

Disclosure of Invention

The invention aims to provide screening equipment of a chip resistor and a using method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the screening device for the chip resistor comprises a screening box, wherein the top of the screening box is fixedly connected with a feeding hopper, one side of the inner wall of the feeding hopper is obliquely arranged, the middle part of the inner wall of the screening box is fixedly connected with a screening plate, the screening plate is divided into an inclined section and a horizontal section, the inclination of the inclined section is 10-20 degrees, a plurality of screening openings which are distributed at equal intervals are formed in the middle parts of the inclined section and the horizontal section, and the edge of the top of the inner wall of each screening opening is cut into an arc chamfer; a screening vibrator is fixedly installed on one side of the bottom of the inclined section, a blocking block is fixedly connected to one side of the top of the horizontal section, and one side, facing the screening vibrator, of the blocking block is an arc-shaped surface; the bottom of the screening vibrator is fixedly connected with the center of the bottom of the inclined section through a transmission rod. One end of the screening plate close to the screening vibrator is fixedly connected with the inner wall of the screening box, and the other end of the screening plate far away from the screening vibrator is arranged in a suspended manner;

as a further scheme of the invention: the screening box comprises a screening box body, a screening box inner wall and a screening box outer wall, wherein the screening box inner wall is fixedly connected with a flattening mechanism, the flattening mechanism comprises a flattening plate, a flattening vibrator is fixedly installed on one side of the bottom of the flattening plate, the top of the flattening plate is fixedly connected with a plurality of flattening stop blocks distributed at equal intervals, the side walls and two ends of the flattening stop blocks are both arc-shaped surfaces, the length direction of the flattening stop blocks is perpendicular to the conveying direction of the chip resistors, the length of the flattening stop blocks is not more than that of the chip resistors, and the length of the flattening stop blocks is not less than the width of the chip resistors; the flattening plate is obliquely arranged, so that the chip resistor is in contact with the flattening stop block when falling, and the chip resistor gradually rotates under the action of gravity until the longer side of the chip resistor is parallel to the longer side of the flattening stop block.

As a further scheme of the invention: the fixed feeding control unit that is equipped with in bottom of feeder hopper inner wall, feeding control unit includes feeding motor, feeding motor's output fixedly connected with feed plate, the tip of feed plate is seted up there is the inclined plane, leave the feeding opening between the tip of feed plate and the feeder hopper lateral wall.

As a further scheme of the invention: screening bottom of the case portion one side fixed mounting have ejection of compact conveyer belt, one side fixed mounting of screening bottom of the case portion has waste material conveyer belt, ejection of compact conveyer belt and waste material conveyer belt set up along opposite direction, and ejection of compact conveyer belt and waste material conveyer belt's level is unanimous, the tip of horizontal segment is provided with the waste material export before with screening case lateral wall, the bottom of waste material export corresponds the setting with the top of waste material conveyer belt, the bottom fixedly connected with guide plate of horizontal segment, one side of guide plate sets up to the inclined plane, and one side fixedly connected with striker plate of guide plate bottom.

The discharging conveying belt is arranged on the inner wall of the discharging conveying frame, the top surface of the discharging conveying frame is higher than that of the discharging conveying belt, the top of the discharging conveying frame is connected with a detection supporting frame in a sliding mode, and a CCD image sensor is fixedly mounted at the bottom of the detection supporting frame; the waste conveying belt is arranged inside the waste conveying frame, and the top surface of the waste conveying frame is higher than that of the waste conveying belt; the both sides of ejection of compact carriage and the both sides of waste material carriage all set up the detection mouth that a plurality of equidistance distributes, the bottom surface height that detects the mouth highly is unanimous with ejection of compact conveyer belt's height.

The invention also discloses a use method of the chip resistor screening equipment, which comprises the following steps:

the method comprises the following steps: the chip resistor is guided and fed through the feeding hopper and temporarily stored, the opening range of the feeding plate is controlled through the feeding motor, and the feeding speed of the chip resistor is adjusted;

step two: vibrating the flattening plate through a flattening vibrator to disperse and flatten the chip resistors on the flattening plate;

step three: the chip resistor is connected through the screening plate, and the screening plate is vibrated through the screening vibrator to screen the chip resistor;

step four: receiving and sending out screened qualified products through a discharge conveyer belt, and receiving and sending out unqualified products through a waste conveyer belt;

step five: and the qualified products and the unqualified products after screening are inspected and sorted again in the conveying process of the discharging conveying belt and the waste conveying belt.

Compared with the prior art, the invention has the beneficial effects that: according to the screening equipment for the chip resistors and the using method thereof, the fed chip resistors are temporarily stored by arranging the feed hopper, and the chip resistors in the feed hopper are uniformly and equally conveyed by arranging the feed control unit, so that the problems that the resistors are stacked and extruded mutually, the screening efficiency is low, and the resistor damage rate caused by screening is reduced are avoided; the spreading plate and the spreading motor are arranged to disperse and spread the resistors, so that the resistors uniformly and slowly fall into the screening plate, and the posture of the chip resistors is adjusted while the chip resistors fall along the spreading plate, so that the chip resistors can pass through the screening plate more easily; through setting up the horizontal segment and set up at the top of horizontal segment and block the piece, assemble the paster resistance and concentrate, through the screening mouth of seting up on the horizontal segment, carry out further screening to the paster resistance that assembles, sieve the portion again because falling speed is too fast from the qualified laminating resistance of the screening mouth whereabouts on the slope section, make it along the screening mouth whereabouts by the horizontal segment, improve the screening accuracy.

Drawings

FIG. 1 is a perspective view of a screening apparatus for chip resistors;

FIG. 2 is a cross-sectional view of a screening apparatus for a chip resistor;

FIG. 3 is a schematic structural diagram of a screening plate of a screening device of a chip resistor;

FIG. 4 is a schematic diagram of a screening apparatus flattening plate of a chip resistor.

In the figure: 1. screening the box; 2. a feed hopper; 3. a screening plate; 4. a screening port; 5. an inclined section; 6. a horizontal segment; 7. a blocking block; 8. a screening vibrator; 9. flattening; 10. flattening the stop block; 11. flattening the vibrator; 12. a feeding motor; 13. a feeding plate; 14. a discharge conveyer belt; 15. a scrap conveyor belt; 16. a guide plate; 17. a striker plate; 18. detecting a support frame; 19. a CCD image sensor; 20. and (6) a detection port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a screening device for a chip resistor comprises a screening box 1, wherein the top of the screening box 1 is fixedly connected with a feed hopper 2, one side of the inner wall of the feed hopper 2 is obliquely arranged, the middle part of the inner wall of the screening box 1 is fixedly connected with a screening plate 3, the screening plate 3 is divided into an inclined section 5 and a horizontal section 6, the inclination of the inclined section 5 is 10-20 degrees, so that the chip resistor can fall on the screening plate 3 at a slow speed, the direct current time of the chip resistor on the screening plate 3 is prolonged, the screening efficiency is improved, a plurality of screening openings 4 which are equidistantly distributed are formed in the middle parts of the inclined section 5 and the horizontal section 6, and the edge of the top of the inner wall of each screening opening 4 is cut into an arc-shaped chamfer so that the chip resistor can fall along the screening openings 4 conveniently; a screening vibrator 8 is fixedly installed on one side of the bottom of the inclined section 5, a blocking block 7 is fixedly connected to one side of the top of the horizontal section 6, one side, facing the screening vibrator 8, of the blocking block 7 is set to be an arc-shaped surface, the horizontal section 6 is arranged, the blocking block 7 is arranged at the top of the horizontal section 6, so that the sheet resistors can be conveniently gathered and concentrated, the gathered sheet resistors are further screened through a screening opening 4 formed in the horizontal section 6, and part of qualified attached resistors which do not fall from the screening opening 4 in the inclined section 5 due to too high falling speed are screened again, so that the sheet resistors fall along the screening opening 4 in the horizontal section 6, and the screening accuracy is improved; the bottom of the sieving vibrator 8 is fixedly connected with the center of the bottom of the inclined section 5 through a transmission rod; one end of the screening plate 3 close to the screening vibrator 8 is fixedly connected with the inner wall of the screening box 1, one end far away from the screening vibrator 8 is arranged in a suspension mode, vibration of the screening vibrator 8 is conducted through the transmission rod, vibration of the screening plate 3 is more uniform, one end far away from the screening vibrator 8 of the screening plate 3 is arranged in a suspension mode through the transmission rod and the center of the bottom of the inclined section 5 and the other end far away from the screening vibrator 8 of the screening plate 3, one end far away from the screening vibrator 8 (namely the end of the horizontal section 6) has larger vibration amplitude compared with the rest parts of the screening plate 3, so that the chip resistors left on the horizontal section 6 conveniently cross over the blocking block 7, and chip resistors on the horizontal section 6 are prevented from being accumulated;

the middle part of the inner wall of the screening box 1 is fixedly connected with a flattening mechanism, the flattening mechanism comprises a flattening plate 9, a flattening vibrator 11 is fixedly installed on one side of the bottom of the flattening plate 9, the top of the flattening plate 9 is fixedly connected with a plurality of flattening stop blocks 10 distributed at equal intervals, the side walls and two ends of the flattening stop blocks 10 are both arc-shaped surfaces, the length direction of the flattening stop blocks 10 is perpendicular to the conveying direction of the chip resistors, the length of the flattening stop blocks 10 is not more than that of the chip resistors, and the length of the flattening stop blocks 10 is not less than that of the chip resistors; the board 9 slope of stand sets up for chip resistor contacts with shakeout dog 10 when the whereabouts, under the action of gravity, chip resistor rotates gradually, parallel with the longer limit of shakeout dog 10 up to its longer limit, with this realization to the regulation of chip resistor gesture to a certain extent, the length direction of a plurality of screening mouth 4 is perpendicular with chip resistor's direction of delivery, make its length direction of the welt resistor after the gesture is adjusted unanimous with the length direction of screening mouth 4, be convenient for chip resistor's whereabouts.

A feeding control unit is fixedly arranged at the bottom of the inner wall of the feeding hopper 2 and comprises a feeding part with a feeding size smaller than 12, a feeding plate 13 is fixedly connected to the output end of the feeding motor 12, an inclined surface is arranged at the end part of the feeding plate 13, and a feeding port is formed between the end part of the feeding plate 13 and the side wall of the feeding hopper 2; through adjusting the rotation range of feed plate 13, change the size of feeding opening, and then realize the regulation to adjustment chip resistor unloading speed for chip resistor can even stable whereabouts, avoids chip resistor to produce and piles up the phenomenon, influences screening efficiency.

A discharging conveyer belt 14 is fixedly installed on one side of the bottom of the screening box 1, a waste conveyer belt 15 is fixedly installed on one side of the bottom of the screening box 1, the discharging conveyer belt 14 and the waste conveyer belt 15 are arranged in opposite directions, the horizontal heights of the discharging conveyer belt 14 and the waste conveyer belt 15 are consistent, a waste outlet is formed in front of the end part of the horizontal section 6 and the side wall of the screening box 1, the bottom of the waste outlet is arranged corresponding to the top of the waste conveyer belt 15, a guide plate 16 is fixedly connected to the bottom of the horizontal section 6, one side of the guide plate 16 is an inclined plane, and a material baffle plate 17 is fixedly connected to one side of the bottom of the guide plate 16; the discharging conveying belt 14 and the waste conveying belt 15 are arranged in opposite directions, so that qualified chip resistors and unqualified chip resistors can be conveniently and respectively treated; the discharging conveying belt 14 is arranged on the inner wall of the discharging conveying frame, the top surface of the discharging conveying frame is higher than that of the discharging conveying belt 14, the top of the discharging conveying frame is connected with a detection support frame 18 in a sliding mode, and a CCD image sensor 19 is fixedly installed at the bottom of the detection support frame 18; the waste conveying belt 15 is arranged in the waste conveying frame, and the top surface of the waste conveying frame is higher than that of the waste conveying belt 15; a plurality of detection openings 20 which are distributed at equal intervals are formed in the two sides of the discharging conveying frame and the two sides of the waste conveying frame, and the bottom surface height of each detection opening 20 is consistent with the height of the discharging conveying belt 14.

The invention also discloses a use method of the chip resistor screening equipment, which comprises the following steps:

the method comprises the following steps: the chip resistor is guided and fed through the feeding hopper 2 and temporarily stored, the opening range of the feeding plate 13 is controlled through the feeding motor 12, and the feeding speed of the chip resistor is adjusted;

step two: vibrating the flattening plate 9 through the flattening vibrator 11 to disperse and flatten the chip resistors on the flattening plate 9;

step three: the chip resistor is connected through the screening plate 3, and the screening plate 3 is vibrated through the screening vibrator 8 to screen the chip resistor;

step four: the qualified screened products are received and sent out through a discharge conveyer belt 14, and the unqualified products are received and sent out through a waste conveyer belt 15;

step five: and the qualified products and the unqualified products after screening are inspected and sorted again in the conveying process of the discharging conveying belt 14 and the waste conveying belt 15.

When the chip resistor feeding device is used, the chip resistor is fed into the feeding hopper 2 for temporary storage through manual work or external feeding equipment, the feeding motor 12 is used for controlling the feeding plate 13 to rotate and open, the size of a feeding through hole is changed by adjusting the rotating amplitude of the feeding plate 13, and the feeding speed of the chip resistor is adjusted;

the chip resistors fall into the flattening plate 9 from the feeding through hole, the flattening vibrator 11 vibrates the flattening plate 9, the chip resistors are gradually dispersed in the falling process along the flattening plate 9, and meanwhile, the posture of the chip resistors is adjusted through the pushing action of the flattening stop block so as to facilitate subsequent screening;

the chip resistors are received through the screening plate 3, part of qualified chip resistors pass through the screening port 4 and fall on the discharging conveyer belt 14 through the screening vibrator 8 to vibrate the screening plate 3, the other part of qualified resistors and unqualified resistors are gathered on the horizontal section 6, the qualified chip resistors fall through the screening port 4 on the horizontal section 6 and fall on the discharging conveyer belt 14 through the guidance of the guide plate 16, and the unqualified resistors pass through the blocking block 7 under the vibration effect and fall into the waste conveyer belt 15 through a waste outlet;

the qualified screened products are received and sent out through a discharge conveyer belt 14, and the unqualified products are received and sent out through a waste conveyer belt 15;

in the conveying process of the discharging conveying belt 14, images of the chip resistors are shot through the CCD image sensor 19 and transmitted to an external data output device for processing and analysis, when the CCD image sensor 19 detects that unqualified products exist on the discharging conveying belt 14, a signal is sent to an operator, an operation station is arranged near a detection port, the operator stands on the operation station, and the unqualified products on the discharging conveying belt 14 are removed by the operator; sorting qualified products on the waste conveyor belt 15;

in the in-process of in-service use, also can be through the screening board 3 that changes the outfit and have less screening hole 4 for the resistance that accords with the specification is retained on screening board 3, and less unqualified resistance of volume or crushed aggregates impurity etc. fall down by screening hole 4, and at this moment, the qualified resistance of output is carried out by waste material conveyer belt 15, and unqualified resistance is seen off by ejection of compact conveyer belt 14.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.