CN212442104U

CN212442104U - Small hole flow screening machine

Info

Publication number: CN212442104U
Application number: CN202020700596.7U
Authority: CN
Inventors: 林时练; 王询; 王德毅
Original assignee: Fuding Mingwei Machinery Co ltd
Current assignee: Fuding Mingwei Machinery Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-02-02
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to the field of hole flow screening machines, in particular to a small hole flow screening machine, which comprises a main body, wherein a detection platform is arranged on the main body, a support frame is fixed on the detection platform, and a first distributor, a second distributor, a workpiece fixture and a workpiece transporter are arranged on the support frame, the utility model is provided with the first distributor, the second distributor, the workpiece fixture and the workpiece transporter, and then the vibration discs are matched with each other simultaneously, so that the automatic feeding, positioning and tightening and automatic detection processes of workpieces can be realized, the detection efficiency is improved, the time and the labor are saved, the workpieces with different types can be adapted through the action of the first distributor and the second distributor, the detection of the workpieces is more diversified, meanwhile, the detected workpieces can be screened through the action of a distributor, the corresponding air flow is larger than the upper limit value, the air flow is smaller than the lower limit value or the workpieces with the flow in the set range can be screened respectively, the subsequent treatment of the screened workpiece is more convenient.

Description

Small hole flow screening machine

Technical Field

The utility model relates to a hole flow sieve separator field especially indicates a small hole flow sieve separator.

Background

The industrial cylinder part is a tubular part used for circulating gasoline and air in a carburetor, wherein the middle of the cylinder is provided with a through hole which penetrates through the cylinder up and down, the part is often called a carburetor metering orifice, the carburetor metering orifice has huge demand and has higher quality requirement on products, so each manufacturer needs to spend a large amount of manpower and material resources to detect the flow of the carburetor metering orifice which is about to leave a factory, wherein the most important quality detection is to detect the flow of each carburetor metering orifice, and the detection mainly depends on manual detection, wastes time and labor and has low measurement efficiency at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides a small hole flow sieve separator to all adopt artifical the measurement when overcoming prior art measurement screening carburetor metering orifice, waste time and energy, the not high problem of measurement efficiency.

The utility model adopts the following technical scheme: the utility model provides a small hole flow sieve separator, including main part 1, be equipped with testing platform 2 on the main part 1, its characterized in that: the detection platform 2 is fixed with a support frame 3, the support frame 3 is provided with a first distributor 4, a second distributor 5, a workpiece clamp device 6 and a workpiece transfer device 7, the first distributor 4, the second distributor 5 and the workpiece clamp device 6 are respectively fixed on the same height of the support frame 3, the workpiece clamp device 6 is connected on the support frame 3 in a sliding manner, the workpiece clamp device 6 is arranged below the first distributor 4, the second distributor 5 and the workpiece clamp device 6, the workpiece clamp device 6 moves relative to the first distributor 4, the second distributor 5 and the workpiece clamp device 6, the first distributor 4 comprises a first discharge hole 41, the second distributor 5 comprises a second discharge hole 51, the workpiece clamp device 6 is provided with a plurality of clamping holes 61 arranged at equal intervals, the workpiece transfer device 7 is provided with a plurality of transfer holes 71 arranged at equal intervals, wherein the transfer holes 71 are the same as the clamping holes 61 in number, each transfer hole 71 sequentially moves to the lower part of the first discharging hole 41 and the second discharging hole 51, and each transfer hole 71 can move to the corresponding clamping hole 61 of the workpiece fixture 6.

As a further improvement, the first distributor 4 further includes a first distributing bracket 42, a first material guiding pipe 43 is fixed on the first distributing bracket 42, a first material guiding hole 431 penetrates through the first material guiding pipe 43, a push plate 44 capable of moving left and right is arranged on the first distributing bracket 42 below the first material guiding hole 431, a moving hole 441 penetrates through the push plate 44, a first material discharging pipe 45 is fixed on the first distributing bracket 42 below the push plate 44, and the first material discharging hole 41 penetrates through the first material discharging pipe 45.

As a further improvement, the second distributor 5 further includes a second distributor support 52, a second distributor block 53 is fixed on the second distributor support 52, a second material guiding hole 531 vertically penetrates through the second distributor block 53, an upper stop hole 54 and a lower stop hole 55 respectively penetrate through positions of the second distributor block 53 perpendicular to the diameter of the second material guiding hole 531, the upper stop hole 54 and the lower stop hole 55 are both communicated with the second material guiding hole 531, the upper stop hole 54 and the lower stop hole 55 are respectively nested with an upper stop rod 56 and a lower stop rod 57 which can move left and right, when the upper stop rod 56 moves into the second material guiding hole 531, the lower stop rod 57 moves away from the second material guiding hole 531, a second material discharging pipe 58 is fixed below the second distributor support 52 corresponding to the second material guiding hole 531, and the second material discharging hole 51 penetrates through the second material discharging pipe 58.

As a further improvement, the workpiece transporter 7 further includes a transfer block 72, the transfer block 72 moves left and right relative to the support frame 3, the transfer block 72 is fixed with a plurality of support blocks 73 arranged at equal intervals, each support block 73 is provided with an inwardly concave movable groove 74 above, an adapter sleeve 75 is nested in each movable groove 74, wherein the adapter sleeve 75 moves up and down relative to the support block 73, the transfer holes 71 respectively penetrate through the adapter sleeve 75, a thimble 76 penetrates through and is fixed at the bottom of each movable groove 74, the thimble 76 is embedded in the lower end of the transfer hole 71, a spring 76 is nested in each movable groove 74, one end of the spring 76 is supported on the adapter sleeve 75, and the other end of the spring is supported at the bottom of each movable groove 74; one end of the adapter sleeve 75 close to the movable groove 74 is provided with a clamping block 751 which protrudes outwards, and a notch of the movable groove 74 is fixed with a limiting sleeve 78.

As a further improvement, the workpiece fixture 6 further includes a fixture support block 62, the fixture support block 62 is connected with a support plate 63 in an up-and-down sliding manner, the support plate 63 is provided with a plurality of support sleeves 64, through grooves 65 are respectively penetrated in the support sleeves 64, movable tubes 66 are respectively nested in the through grooves 65, the movable tubes 66 all move up and down relative to the support sleeves 64, the lower ends of the support sleeves 64 are fixed with mounting sleeves 68, the clamping holes 61 are respectively penetrated through the mounting sleeves 68, sealing sleeves 67 are nested in the mounting sleeves 68, and gaps are formed between the sealing sleeves 67 and the ends of the movable tubes 66.

As a further improvement, a vibrating plate 8 is further provided on the side of the main body 1 close to the first distributor 4, wherein the vibrating plate 8 can be connected to the first distributor 4 and the second distributor 5, respectively.

As a further improvement, a material distributing device 9 is further arranged below the detection platform 2 corresponding to the workpiece holder 6, the material distributing device 9 includes a material distributing slide rail 91, the material distributing slide rail 91 is fixed below the detection platform 2, the material distributing slide rail 91 is connected with a first material distributing hopper 92 and a second material distributing hopper 93 in a sliding manner, a gap is formed between the first material distributing hopper 92 and the second material distributing hopper 93, the gap is arranged below the material feeding hopper 910, the material feeding hopper 910 is fixed above the detection platform 2, the material feeding hopper 910 is arranged below the workpiece holder 6, the first material distributing hopper 92 guides the qualified material box 94, the second material distributing hopper 93 guides the lower material box 96, an upper limit material box 95 is arranged between the qualified material box 94 and the lower limit material box 96, the qualified material box 94, the upper limit material box 95 and the lower limit material box 96 are all embedded into a material box holder 97, the magazine holder 97 is fixed below the detection platform 2.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses first tripper 4 has been set up, second tripper 5, work piece holder ware 6 and work piece transfer ware 7, mutually support by vibration dish 8 simultaneously again, just can realize the automatic feeding of work piece, the location steps up and automated inspection's process, great improvement detection efficiency, time saving and labor saving, effect through first tripper 4 and second tripper 5, can adapt to the work piece of different models, make the detection of work piece all more diversified, simultaneously through feed divider 9's effect, can sieve the work piece that detects well, make corresponding air flow be greater than the upper limit value, the air flow is less than the lower limit value or the work piece of flow at the within range that sets up can sieve respectively and concentrate, it is more convenient to make follow-up work piece to the screening handle.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic front view of the structure of the present invention.

Fig. 3 is a schematic structural diagram of the support frame, the first distributor, the second distributor, the workpiece clamping device and the workpiece transfer device of the present invention.

Fig. 4 is a schematic view of a front cross-section structure of the first distributor of the present invention.

Fig. 5 is a schematic view of a front cross-section structure of the second distributor of the present invention.

FIG. 6 is a schematic view of a front cut-open structure of the workpiece transfer device

Fig. 7 is a schematic view of the front cross-section structure of the workpiece clamping device of the present invention.

Fig. 8 is a schematic structural diagram of the material separating device of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 3, a small-hole flow screening machine comprises a main body 1, wherein a detection platform 2 is arranged on the main body 1, a support frame 3 is fixed on the detection platform 2, a first distributor 4, a second distributor 5, a workpiece fixture 6 and a workpiece transfer device 7 are arranged on the support frame 3, the first distributor 4, the second distributor 5 and the workpiece fixture 6 are respectively fixed at the same height of the support frame 3, wherein the first distributor 4 and the second distributor 5 can feed workpieces of different types, the workpiece fixture 6 is slidably connected to the support frame 3, the workpiece fixture 6 is arranged below the first distributor 4, the second distributor 5 and the workpiece fixture 6, and the workpiece fixture 6 relatively moves with respect to the first distributor 4, the second distributor 5 and the workpiece fixture 6; first tripper 4 is including first discharge opening 41, second tripper 5 is including second discharge opening 51, be equipped with the tight hole 61 of the clamp that a plurality of equidistance was arranged on work piece holder 6, be equipped with the transport hole 71 that a plurality of equidistance was arranged on work piece transport 7, wherein transport hole 71 is the same with pressing from both sides tight hole 61 quantity, and every transports hole 71 and removes the below to first discharge opening 41 and second discharge opening 51 respectively in proper order, and every transports hole 71 and can move to the tight hole 61 of the clamp that work piece holder 6 is corresponding on. The main body 1 is also provided with a vibrating disk 8 at one side close to the first distributor 4, wherein the vibrating disk 8 can be respectively connected with the first distributor 4 and the second distributor 5 through a conduit. The main body 1 is further provided with a control panel 10, wherein the upper limit value, the lower limit value or the qualified range of the air flow set in the control system can be set through the control panel 10, and the control system is a PLC.

As shown in fig. 4, the first distributor 4 further includes a first distributing bracket 42, the first distributing bracket 42 is fixed on the supporting frame 3, a first material guiding pipe 43 is fixed on the first distributing bracket 42, a first material guiding hole 431 penetrates through the first material guiding pipe 43, a push plate 44 capable of moving left and right is arranged on the first distributing bracket 42 below the first material guiding hole 431, wherein the push plate 44 is driven by a first distributing cylinder 46, the first distributing cylinder 46 is fixed on the first distributing bracket 42, a moving hole 441 penetrates through the push plate 44, a first material discharging pipe 45 is fixed on the first distributing bracket 42 below the push plate 44, and the first material discharging hole 41 penetrates through the first material discharging pipe 45.

As shown in fig. 5, the second distributor 5 further includes a second distributor support 52, the second distributor support 52 is fixed on the support frame 3, a second distributor block 53 is fixed on the second distributor support 52, a second guide hole 531 vertically penetrates through the second distributor block 53, an upper stop hole 54 and a lower stop hole 55 respectively penetrate through the second distributor block 53 at a position perpendicular to the diameter of the second guide hole 531, the upper stop hole 54 and the lower stop hole 55 are both communicated with the second guide hole 531, the upper stop hole 54 and the lower stop hole 55 are respectively nested with an upper stop rod 56 and a lower stop rod 57 which can move left and right, wherein the upper stop rod 56 and the lower stop rod 57 are respectively driven by a second upper distributor cylinder 59 and a second lower distributor cylinder 510, the second upper distributor cylinder 59 and the second lower distributor cylinder 510 are both fixed on the second distributor support 53, when the upper stop rod 56 moves into the second guide hole 531, the lower stop rod 57 moves away from the second material guiding hole 531, a second discharging pipe 58 is fixed on the second material dividing support 52 below the second material guiding hole 531, and the second discharging hole 51 penetrates through the second discharging pipe 58.

As shown in fig. 6, the workpiece transfer device 7 further includes a transfer block 72, the transfer block 72 moves left and right relative to the support frame 3, a back surface of the transfer block 72 is fixed to a transmission belt, the transmission belt is driven by a motor, so that the transfer block 72 can move left and right, and the motor is fixed in the support frame 3; a plurality of supporting blocks 73 which are arranged at equal intervals are fixed on the transfer block 72, inward concave movable grooves 74 are respectively arranged above the supporting blocks 73, adapter sleeves 75 are nested in the movable grooves 74, the adapter sleeves 75 move up and down relative to the supporting blocks 73, the transfer holes 71 respectively penetrate through the adapter sleeves 75, ejector pins 76 are fixedly penetrated through the groove bottoms of the movable grooves 74, the ejector pins 76 are embedded into the lower ends of the transfer holes 71, springs 76 are nested in the movable grooves 74, one ends of the springs 76 are supported on the adapter sleeves 75, and the other ends of the springs are supported on the groove bottoms of the movable grooves 74 and are acted by the springs 76; one end of the adapter sleeve 75 close to the movable groove 74 is provided with a clamping block 751 which protrudes outwards, and a notch of the movable groove 74 is fixed with a limiting sleeve 78.

As shown in fig. 7, the workpiece fixture 6 further includes a fixture supporting block 62, the fixture supporting block 62 is fixed on the supporting frame 3, the fixture supporting block 62 is connected with a supporting plate 63 in a sliding manner, the supporting plate 63 is driven by a lifting cylinder 69, the supporting plate 63 is provided with a plurality of supporting sleeves 64, through grooves 65 are respectively penetrated in the supporting sleeves 64, movable tubes 66 are respectively nested in the through grooves 65, the movable tubes 66 move up and down relative to the supporting sleeves 64, the upper ends of the supporting sleeves 64 are respectively fixed with a fixture cylinder 610, the up and down movement of the supporting sleeves 64 is driven by the fixture cylinder 610, the lower ends of the supporting sleeves 64 are respectively fixed with a mounting sleeve 68, the clamping holes 61 are respectively penetrated through the mounting sleeves 68, a sealing sleeve 67 is nested in the mounting sleeve 68, the sealing sleeve 67 is connected with the end portion of the movable tube 66, the movable tubes 66 with gaps are respectively connected with the air flow tester 11 through an air pipe, wherein the air flow tester 11 can be a shenyang aldek model A321 orifice flow tester in the prior art, and 485 communication is provided between the air flow tester 11 and the PLC.

As shown in fig. 1 to 8, a material distributing device 9 is further disposed below the detection platform 2 corresponding to the workpiece fixture 6, a feed hopper 910 is fixed above the material distributing device 9 corresponding to the detection platform 2, the material distributing device 9 includes a material distributing slide rail 91, the material distributing slide rail 91 is fixed below the detection platform 2, a first material distributing hopper 92 and a second material distributing hopper 93 are slidably connected to the material distributing slide rail 91, the first material distributing hopper 92 and the second material distributing hopper 93 are respectively driven by a first hopper cylinder 98 and a second hopper cylinder 99, wherein the first hopper cylinder 98 and the second hopper cylinder 99 are respectively fixed at two ends of the material distributing slide rail 91, a gap is formed between the first material distributing hopper 92 and the second material distributing hopper 93, a gap between the first material distributing hopper 92 and the second material distributing hopper 93 is disposed below the feed hopper 910, the first material distributing hopper 92 leads to a qualified material box 94, the second material distribution hopper 93 is guided to the lower limit material box 96, an upper limit material box 95 is arranged between the qualified material box 94 and the lower limit material box 96, the qualified material box 94, the upper limit material box 95 and the lower limit material box 96 are all embedded into a material box frame 97, and the material box frame 97 is fixed below the detection platform 2.

As shown in fig. 1 to 8, when a workpiece with a short length is detected, a first distributor 4 is used for feeding, when the workpiece is fed, the workpiece is sequentially guided into a first material guiding hole 431 of a first material guiding pipe 43 by a guide pipe through the action of a vibration plate 8, at this time, the workpiece is guided downwards into a moving hole 441 of a push plate 44 through the first material guiding hole 431, when a motor drives a transfer block 72 to drive a transfer hole 71 to move to the lower side of a first material discharging hole 41, the moving hole 441 of the push plate 44 is driven to move to the upper side of the first material discharging hole 41 through the drive of a first material distributing cylinder 46, at this time, the moving hole 441 is convenient for the first material discharging hole 41 to be communicated, the workpiece in the moving hole 441 falls into the transfer hole 71 through the first material discharging hole 41, at this time, the next workpiece in the first material guiding hole 431 continues to move downwards, so that one end of the downwards moved workpiece is supported on the upper surface of the push plate 44, and the other end of the workpiece is embedded into, after the other transfer hole 71 driven by the transfer block 72 moves to the position below the first discharge hole 41, the first material distribution cylinder 46 drives the moving hole 441 of the push plate 44 to move towards the direction of the first material guide hole 431 until the moving hole 441 moves to the position below the first material guide hole 431, the next workpiece falls into the moving hole 441, and the next workpiece is pushed into the other transfer hole 71 in the same manner, so that the operation is repeated until the transfer holes 71 on the transfer block 72 are all nested with the workpieces. When a workpiece with a longer length is detected, a second distributor 5 is used for feeding, when the workpiece is fed, the workpiece is orderly guided into a second guide hole 531 of a second distributor block 53 through a guide pipe by the action of a vibration disc 8, at the moment, the workpiece is guided to fall onto a lower stop rod 57 from the second guide hole 531 by the second guide hole 531, when a motor drives a transfer block 72 to drive a transfer hole 71 to move to the lower part of a second discharge hole 51, a second upper distributing cylinder 59 and a second lower distributing cylinder 510 are simultaneously driven, so that the second upper distributing cylinder 59 drives an upper stop rod 56 to move towards the direction of the second guide hole 531, the lower stop rod 57 moves away from the direction of the second guide hole, at the moment, the workpiece falls from the second guide hole 531 to the second discharge hole 51, the workpiece is guided into the transfer hole 71 through the second discharge hole 51, at the moment, the upper stop rod 56 props up the second workpiece, so that the second workpiece is clamped in the second guide hole 531, then, the motor drives the transfer block 72, so that the transfer block 72 drives the second transfer hole 71 to move to the position below the second discharge hole 51, at this time, the second upper material-separating cylinder 59 and the second lower material-separating cylinder 510 are driven in the opposite direction, so that the second upper material-separating cylinder 59 drives the upper stop rod 56 to move in the direction away from the second material-guiding hole 531, the lower stop rod 57 moves in the direction towards the second material-guiding hole 531, so that the second workpiece falls onto the lower stop rod 57, and the second workpiece is conveyed into the next transfer hole 71 in the same manner, so that the operation is repeated until the work pieces are nested in the transfer holes 71 on the transfer block 72.

As shown in fig. 1 to 8, when detecting the flow rate of the workpiece, the motor drives the transfer block 72 until the transfer block 72 moves below the workpiece fixture 6, so that the transfer holes 71 on the transfer block 72 correspond to the clamping holes 61 of the workpiece fixture 6, the lift cylinder 69 drives the support plate 63, so that the support plate 63 drives all the support sleeves 64 to move toward the direction of the adapter sleeve 75, until the mounting sleeve 68 presses the adapter sleeve 75, the adapter sleeve 75 moves downward in the movable groove 74 to compress the compression spring 77, the ejector pin 76 prevents the workpiece in the transfer hole 71 from moving downward, so that the upper end of the workpiece penetrates through the clamping hole 61 and is embedded into the sealing sleeve 67, the clamp cylinder 610 is driven at this time, the movable tube 66 is driven to move downward by the clamp cylinder 610, until the lower end of the movable tube 66 presses the sealing sleeve 67, and the sealing sleeve 67 is pressurized, due to the toughness of the sealing sleeve 67, extrusion force is generated towards the center, the workpiece is clamped in the sealing sleeve 67, the supporting plate 63 is driven reversely through the lifting cylinder 69, the supporting plate 63 moves upwards to the original position, the workpiece moves upwards to leave the transfer hole 71, the workpiece is transferred later, and the flow of the workpiece is measured through the air flow tester at the moment.

As shown in fig. 1 to 8, after the detection is completed, if the air flow in the detected workpiece is greater than the set upper limit value, the clamp cylinder 610 with the corresponding air flow greater than the upper limit value is driven reversely by the control system, so that the clamp cylinder 610 drives the movable tube 66 to move upward to the original position, the sealing sleeve 67 is no longer extruded, the sealing sleeve 67 returns to the original position, the workpiece is no longer clamped, the workpiece falls into the feeding hopper 910 by its own gravity, the workpiece with the air flow greater than the upper limit value is guided downward by the feeding hopper 910 to fall, and the workpiece falls into the upper limit material box 95 from the gap between the first distribution hopper 92 and the second distribution hopper 93; if the air flow in the detected workpiece is smaller than the set lower limit value, the control system drives the second hopper air cylinder 99, the second hopper air cylinder 99 drives the second distribution hopper 93 to move towards the first distribution hopper 92, so that the second distribution hopper 93 is attached to the outer surface of the first distribution hopper 92, meanwhile, the second distribution hopper 93 moves to the lower part of the feed hopper 910, then the clamp air cylinder 610 with the corresponding air flow smaller than the upper limit value is driven reversely in the same way to drive the corresponding movable pipe 66 to move upwards to the original position, so that the workpiece with the air flow smaller than the lower limit value falls downwards to enter the feed hopper 910, then the feed hopper 910 guides the workpiece into the second distribution hopper 93, the second distribution hopper 93 guides the workpiece into the lower limit material box 96, then the control system drives the second hopper air cylinder 99 reversely, so that the second distribution hopper 93 is driven to the original position, so as to facilitate the subsequent action of screening the workpiece; if the air flow in the detected workpiece is within the set range value, the control system drives the first hopper cylinder 98, the first hopper cylinder 98 drives the first distribution hopper 92 to move towards the direction of the second distribution hopper 93, so that the outer surfaces of the first distribution hopper 92 and the second distribution hopper 93 are attached to each other, meanwhile, the first distribution hopper 92 moves to the lower part of the feed hopper 910, then the clamp cylinders 610 with the corresponding air flow values within the set range are driven in the reverse direction, so that the corresponding workpieces fall onto the feed hopper 910, then the workpieces are guided to the first distribution hopper 92 by the feed hopper 910, finally, after the workpieces are guided into the qualified material box 94 by the first distribution hopper 92, the control system drives the first hopper cylinder 98 in the reverse direction, so that the first distribution hopper 92 is driven to the initial position.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. The utility model provides an aperture flow sieve separator, including the main part, be equipped with testing platform in the main part, its characterized in that: the detection platform is fixed with a support frame, the support frame is provided with a first distributor, a second distributor, a workpiece clamp device and a workpiece transporter, the first distributor, the second distributor and the workpiece clamp device are respectively fixed at the same height of the support frame, the workpiece clamp device is connected to the support frame in a sliding manner, the workpiece clamp device is arranged below the first distributor, the second distributor and the workpiece clamp device, the workpiece clamp device moves relative to the first distributor, the second distributor and the workpiece clamp device, the first distributor comprises a first discharge hole, the second distributor comprises a second discharge hole, the workpiece clamp device is provided with a plurality of clamping holes which are arranged at equal intervals, the workpiece transporter is provided with a plurality of transporting holes which are arranged at equal intervals, wherein the transporting holes are the same as the clamping holes in number, and each transporting hole moves to the lower part of the first discharge hole and the second discharge hole in sequence respectively, each transfer hole can move to the corresponding clamping hole of the workpiece clamper.

2. The small bore flow screening machine of claim 1, wherein: the first distributor is characterized by further comprising a first distributing support, a first guide pipe is fixed on the first distributing support, a first guide hole penetrates through the first guide pipe, a push plate capable of moving left and right is arranged below the first guide hole on the first distributing support, a moving hole penetrates through the push plate, a first discharging pipe is fixed below the push plate corresponding to the first distributing support, and a first discharging hole penetrates through the first discharging pipe.

3. The small bore flow screening machine of claim 1, wherein: the second distributor is characterized by further comprising a second distribution support, a second distribution block is fixed on the second distribution support, a second guide hole vertically penetrates through the second distribution block, an upper stop hole and a lower stop hole respectively penetrate through the position, perpendicular to the aperture of the second guide hole, of the second distribution block, the upper stop hole and the lower stop hole are communicated with the second guide hole, an upper stop rod and a lower stop rod which can move left and right are respectively nested in the upper stop hole and the lower stop hole, when the upper stop rod moves into the second guide hole, the lower stop rod is far away from the second guide hole to move, a second discharge pipe is fixed below the second distribution support corresponding to the second guide hole, and the second discharge hole penetrates through the second discharge pipe.

4. The small bore flow screening machine of claim 1, wherein: the workpiece transporter also comprises a transporting block, the transporting block moves left and right relative to the support frame, a plurality of support blocks which are arranged at equal intervals are fixed on the transporting block, inward-concave movable grooves are formed above the support blocks, adapter sleeves are nested in the movable grooves, the adapter sleeves move up and down relative to the support blocks, the transporting holes respectively penetrate through the adapter sleeves, ejector pins are fixedly penetrated through the bottom of the movable grooves, the ejector pins are embedded into the lower ends of the transporting holes, springs are nested in the movable grooves, one ends of the springs are supported on the adapter sleeves, and the other ends of the springs are supported on the bottom of the movable grooves; one end of the adapter sleeve, which is close to the movable groove, is provided with a clamping block protruding outwards, and a limiting sleeve is fixed on a notch of the movable groove.

5. The small bore flow screening machine of claim 1, wherein: the workpiece fixture device further comprises a fixture supporting block, wherein the fixture supporting block is connected with a supporting plate in an up-and-down sliding mode, a plurality of supporting sleeves are arranged on the supporting plate, through grooves are formed in the supporting sleeves in a penetrating mode, movable pipes are nested in the through grooves and move up and down relative to the supporting sleeves, the lower ends of the supporting sleeves are fixed with mounting sleeves, clamping holes are evenly distributed and do not penetrate through the mounting sleeves, sealing sleeves are nested in the mounting sleeves, and gaps are reserved at the end portions of the sealing sleeves and the movable pipes.

6. The small bore flow screening machine of claim 1, wherein: and a vibration disc is further arranged on one side of the main body, which is close to the first distributor, wherein the vibration disc is respectively connected with the first distributor and the second distributor.

7. The small bore flow screening machine of claim 1, wherein: the below that testing platform corresponds work piece holder ware still is equipped with feed divider, feed divider is including dividing the material slide rail, divide the material slide rail to be fixed in testing platform's below, divide material slide rail go up sliding connection have first minute material funnel and second minute material funnel, gapped between first minute material funnel and the second minute material funnel, wherein the clearance sets up the below at the feeder hopper, the feeder hopper is fixed in testing platform's top to the below of work piece holder ware is located to the feeder hopper, first minute material funnel direction qualified magazine, second minute material funnel direction lower limit magazine, be equipped with the upper limit magazine between qualified magazine and the lower limit magazine, qualified magazine, upper limit magazine and lower limit magazine all inlay in the magazine frame, the magazine frame is fixed in testing platform's below.