CN214320932U - Automatic cleaning scrap iron and length detection device for pin shaft type workpiece - Google Patents

Abstract

The utility model discloses an automatic cleaning iron fillings and length detection device for round pin axle type work piece, including frame and defective work dish, the frame top is provided with transport mechanism, and transport mechanism's output is installed and is used for the material claw of centre gripping round pin axle, and the frame has set gradually the transfer chain that is used for transport pin axle to material claw below, has been used for wasing the wiper mechanism of selling epaxial iron fillings of axle, is used for detecting the length measuring mechanism of round pin axle length and is used for depositing the defective work dish of defective work along transport mechanism's direction of delivery on the horizontal plane, the defective work dish is installed in the frame to be located the below of length measuring mechanism. Adopt the utility model discloses, realized the function of self-cleaning adhesion at epaxial iron fillings of round pin and automated inspection round pin axle length to with certified products and defective work classification, improve work efficiency, and reduce workman intensity of labour.

Description

Automatic cleaning scrap iron and length detection device for pin shaft type workpiece

Technical Field

The utility model relates to a processing equipment technical field of round pin axle especially relates to an automatic cleaning iron fillings and length detection device for round pin axle type work piece.

Background

The center of the part spindle type workpiece has a through hole, as: an automotive piston pin, cross-sectional view is shown in fig. 7. For the pin shaft with the through hole, the inner hole and the outer wall are generally required to be cleaned and subjected to length detection after finish machining, and the detected pin shaft is divided into a qualified product and an unqualified product. At present, the procedure of cleaning scrap iron is manually cleaned by adopting a brush or an air blowing mode, the means of detecting whether the pin shaft meets the processing technical requirements is manually measuring by a measuring tool, if the measuring result is within the technical requirement range, the scrap iron is qualified, otherwise, the scrap iron is unqualified. Such an operation method has disadvantages in that the labor intensity of workers is high and the detection efficiency is low.

Disclosure of Invention

The utility model aims to solve the technical problem that a self-cleaning iron fillings and length detection device for round pin axle type work piece is provided, realized the function of self-cleaning adhesion at epaxial iron fillings of round pin and automated inspection round pin axle length to with certified products and defective work classification, improve work efficiency, and reduce workman intensity of labour.

In order to solve the technical problem, the utility model provides an automatic cleaning iron fillings and length detection device for round pin axle type work piece, including frame and defective work dish, the frame top is provided with transport mechanism, and transport mechanism's output is installed and is used for the material claw of grip pin axle, and the frame has set gradually along transport mechanism's direction of delivery on the horizontal plane and has been used for transport pin axle to the transfer chain of material claw below, is used for wasing the wiper mechanism of selling epaxial iron fillings of axle, is used for detecting the length measuring mechanism of round pin axle length and is used for depositing the defective work dish of defective work, the defective work dish is installed in the frame to be located the below of length measuring mechanism.

Wherein, still including the correlation type photoelectric sensor who is used for detecting the iron fillings of adhesion on round pin axle hole, correlation type photoelectric sensor installs in the frame to be located between wiper mechanism and the length measuring mechanism.

The conveying line comprises a first support, a belt conveying assembly, a baffle and a material detecting sensor, the first support is mounted on the rack, the belt conveying assembly is mounted on the first support, the baffle is mounted on the first support and located on two sides of the belt conveying assembly, and the material detecting sensor is mounted at the conveying end of the belt conveying assembly and used for detecting a pin shaft.

The conveying mechanism comprises a transverse conveying assembly arranged at the top of the rack and a lifting assembly arranged at the output end of the transverse conveying assembly, the material claw is arranged at the output end of the lifting assembly, and the material claw can grab a pin shaft positioned on the conveying line under the action of the lifting assembly.

Wherein, the frame is opened there is a through-hole, wiper mechanism is including installing the protection casing on the through-hole, being located the collection bits case of protection casing below, installing first translation subassembly in the frame, installing the rotating electrical machines at first translation subassembly output, installing the brush at the rotating electrical machines output and installing the air-blowing subassembly in the protection casing, and it has so that carry pin axle's transfer passage to open on the protection casing, is provided with the strip brush on the transfer passage, and the brush is rotated by the rotating electrical machines drive to wash the round pin axle hole under the effect of first translation subassembly.

Wherein, the air-blowing component comprises two air-blowing seats installed in the protective cover, wherein first air inlets communicated with an external air compressor are formed in one ends of the two air-blowing seats, and a plurality of first air outlets communicated with the first air inlets are formed in the side faces corresponding to the two air-blowing seats.

The length measuring mechanism comprises a second support arranged on the rack, a second translation assembly arranged on the second support and two moving arms arranged at the output end of the second translation assembly, the two moving arms move in the opposite direction or away from the second translation assembly under the driving of the second translation assembly, clamping blocks for clamping pin shafts are arranged at the corresponding ends of the two moving arms, one moving arm is provided with a displacement sensor, and the other moving arm is provided with a round rod matched with the displacement sensor to detect the length of the pin shafts.

The second translation assembly comprises a driving cylinder arranged on the second support, a gear rotationally connected with the second support and two racks respectively arranged on two moving arms, the two moving arms are respectively connected with the second support in a sliding mode, one moving arm of the two moving arms is connected with an extension rod of the driving cylinder, and the two racks are respectively meshed with the gear.

Wherein the length measuring mechanism further comprises a striking block mounted on the second support and a buffer mounted on one of the moving arms thereof, the striking block corresponding to the buffer in position so that the buffer can act on the striking block.

The device comprises a rack, a first guide chute and a lifting mechanism, wherein the first guide chute is obliquely arranged on the rack, the lifting mechanism is arranged on the rack, the first guide chute is positioned between a length measuring mechanism and a qualified product tray, the qualified product tray is positioned above the first guide chute, and the lifting mechanism is used for lifting a pin shaft positioned at the lower end of the first guide chute to the qualified product tray.

Implement the utility model has the advantages that: (1) the material claw is driven by the conveying mechanism to clamp the pin shaft on the conveying line, the clamping pin shaft sequentially passes through the cleaning mechanism, the length measuring mechanism and the qualified product tray, the cleaning mechanism cleans the inner hole and the outer wall of the pin shaft, the length measuring mechanism detects the length of the pin shaft, the automatic cleaning of the iron chips on the pin shaft and the automatic detection of the length of the pin shaft are achieved, the qualified products and the unqualified products are subjected to classification, the working efficiency is improved, and the labor intensity of workers is reduced. And (2) a correlation type photoelectric sensor is further arranged between the cleaning mechanism and the length measuring mechanism, and can detect scrap iron in an inner hole of the pin shaft, so that the situation that the cleaning mechanism is not cleaned in place, the pin shaft which is not cleaned directly enters the length measuring mechanism, and the situation is prevented from being confused with qualified products.

Drawings

FIG. 1 is a perspective view of an automatic cleaning iron chip and length detection device for a pin shaft type workpiece according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is another perspective view of the automatic cleaning iron chips and length detecting device for pin shaft workpieces according to the present invention;

FIG. 4 is an enlarged view of FIG. 3 at B;

FIG. 5 is a main sectional view of the automatic cleaning scrap iron for pin shaft type workpieces and the protective cover in the length detection device provided by the present invention;

FIG. 6 is a main sectional view of a qualified product tray in the automatic cleaning scrap iron and length detection device for pin shaft workpieces according to the present invention;

fig. 7 is a cross-sectional view of the pin.

In the figure: 1. a frame; 2. a transport mechanism; 21. a lateral transfer assembly; 22. a lifting assembly; 3. material claws; 4. a conveying line; 41. a first bracket; 42. a belt transport assembly; 43. a baffle plate; 44. a material detection sensor; 45. a blanking box; 5. a cleaning mechanism; 51. a protective cover; 52. a scrap collecting box; 53. a first translation assembly; 54. a rotating electric machine; 55. a brush; 56. an air-blowing assembly; 561. an air blowing base; 562. a first air inlet; 563. a first air outlet hole; 57. brushing strips; 6. A length measuring mechanism; 61. a second bracket; 62. a second translation assembly; 621. a driving cylinder; 622. A gear; 623. a rack; 63. a moving arm; 64. a clamping block; 65. a displacement sensor; 66. A round bar; 67. bumping the block; 68. a buffer; 7. qualified product trays; 71. a first material guide chute; 72. A lifting mechanism; 8. a disqualified product tray; 81. a second material guide chute; 9. a correlation type photoelectric sensor; 91. and a third bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-6, the utility model relates to an automatic cleaning iron fillings and length detection device for round pin axle type work piece, including frame 1 and defective work dish 8, frame 1 top is provided with transport mechanism 2, and the material claw 3 that is used for the grip pin axle is installed to transport mechanism 2's output, and frame 1 has set gradually along transport mechanism 2 direction of delivery on the horizontal plane and has been used for transfer pin axle to material claw 3 below transfer chain 4, be used for wasing the wiper mechanism 5 of selling epaxial iron fillings of axle, be used for detecting length measuring mechanism 6 of round pin axle length and be used for depositing the defective work dish 7 of defective work, defective work dish 8 is installed in frame 1 to be located length measuring mechanism 6's below. The pin shaft is clamped by the material claw 3, and when the pin shaft reaches the cleaning mechanism 5, the cleaning mechanism 5 cleans scrap iron on the inner hole and the outer wall of the pin shaft so as to achieve the purpose of cleaning the pin shaft; when the pin shaft reaches the length measuring mechanism 6, the length measuring mechanism 6 detects whether the length of the pin shaft meets the processing technical requirements, if the length of the pin shaft meets the processing technical requirements, the pin shaft is conveyed to a qualified product tray 7 through the conveying mechanism 2 by the material claw 3, and if the length of the pin shaft does not meet the processing technical requirements, the pin shaft directly falls into an unqualified product tray 8.

The utility model provides a theory of operation as follows:

according to the specification of the pin shaft, a range value of a qualified product is preset on the length measuring mechanism 6 in advance, and if the detection result is within the preset range value, the qualified product is determined, otherwise, the unqualified product is determined.

The conveying line 4 conveys the pin shafts to the lower part of the material claw 3 one by one, the conveying mechanism 2 drives the material claw 3 to do descending motion so that the material claw 3 clamps one pin shaft, then the conveying mechanism 2 drives the material claw 3 to move into the cleaning mechanism 5, the cleaning mechanism 5 cleans the pin shaft, then the conveying mechanism 2 drives the material claw 3 to move to the length measuring mechanism 6, the length measuring mechanism 6 detects the length of the pin shaft, when the detection result shows that the length of the pin shaft meets the technical requirement range, the conveying mechanism 2 drives the material claw 3 to move to the upper part of the qualified product disc 7, and the pin shaft is released so that the pin shaft falls into the qualified product disc 7; when the detection structure is that the length of the pin shaft does not meet the technical requirement range, the material claw 3 releases the pin shaft to enable the pin shaft to fall into the unqualified product tray 8, and finally, the conveying mechanism 2 drives the material claw 3 to return to the upper part of the conveying line 4 and clamp the next pin shaft. The pin shaft is clamped by the material claw 3 and sequentially passes through the cleaning mechanism 5 and the length measuring mechanism 6 under the driving of the conveying mechanism 2, so that the functions of cleaning scrap iron adhered to the pin shaft and detecting the length of the pin shaft are realized, qualified products and unqualified products are classified, the working efficiency is improved, and the labor intensity of workers is reduced.

In order to check whether the cleaning mechanism 5 is cleaned in place, the device also comprises a correlation type photoelectric sensor 9 for detecting iron chips adhered to an inner hole of the pin shaft by referring to fig. 3 and 4, wherein the correlation type photoelectric sensor 9 is arranged on the rack 1 and is positioned between the cleaning mechanism 5 and the length measuring mechanism 6. Specifically, the rack 1 is provided with two third supports 91, and the opposite-type photoelectric sensor 9 includes a transmitting end and a receiving end respectively mounted on the two third supports 91. When the cleaning mechanism 5 is cleaned in place, no scrap iron exists in the inner hole of the pin shaft, the receiving end of the correlation type photoelectric sensor 9 can receive light rays emitted by the emitting end, and the material claw 3 conveys the pin shaft into the length measuring mechanism 6 under the driving of the conveying mechanism 2; when the cleaning mechanism 5 does not clean the pin shaft in place, iron chips are adhered to the inner hole of the pin shaft, the receiving end of the correlation type photoelectric sensor 9 cannot receive light rays emitted by the emitting end, the material claw 3 releases the pin shaft, the pin shaft falls into the unqualified product disc 8 due to self weight, the situation that the pin shaft which is not cleaned is conveyed into the length measuring mechanism 6 to cause the confusion of the pin shaft which is not cleaned and qualified products is avoided, and the operation condition that an operator monitors the cleaning mechanism 5 for a long time can be saved.

In order to convey the pins one by one, referring to fig. 1 and 2, the conveyor line 4 includes a first bracket 41, a belt conveying assembly 42, a baffle 43 and a material detecting sensor 44, the first bracket 41 is mounted on the frame 1, the belt conveying assembly 42 is mounted on the first bracket 41, the conveying direction of the belt conveying assembly 42 is parallel to the axial line of the pins, and the conveying direction of the belt conveying assembly 42 is perpendicular to the conveying direction of the conveying mechanism 2. The two baffle plates 43 are mounted on the first support 41 and located on two sides of the belt conveying assembly 42, so that the pin shafts are prevented from rolling out of the belt conveying assembly 42 in the conveying process, the material detecting sensor 44 is mounted at the conveying tail end of the belt conveying assembly 42 and used for detecting the pin shafts, the material detecting sensor 44 is a proximity switch, and when the material detecting sensor 44 detects the pin shafts, the pin shafts are located on the belt conveying assembly 42 and reach a clamping station.

In addition, referring to fig. 2, the conveying beginning end of the conveying line 4 may be provided with a blanking box 45, and the pin shaft located in the blanking box 45 may automatically roll down onto the belt conveying assembly 42, wherein the blanking box 45 may be placed at the end of the production line of the pin shaft or manually fed by an operator to facilitate blanking onto the conveying line 4.

In order to realize that the pin roll passes through the cleaning mechanism 5 and the length measuring mechanism 6 from the conveying line 4 in sequence, refer to fig. 1 and 3, the conveying mechanism 2 comprises a transverse conveying assembly 21 arranged at the top of the rack 1 and a lifting assembly 22 arranged at the output end of the transverse conveying assembly 21, the material claw 3 is arranged at the output end of the lifting assembly 22, and the material claw 3 can grab the pin roll on the conveying line 4 under the action of the lifting assembly 22.

Specifically, the material claw 3 is preferably a pneumatic clamping jaw, and the pin shaft is clamped from the middle of the pin shaft through the pneumatic clamping jaw. The lifting assembly 22 preferably adopts an air cylinder, and the material claw 3 is driven by the air cylinder to move up and down, so that the pin shaft on the conveying line 4 can be grabbed. The transverse conveying assembly 21 can adopt a belt transmission, a gear-rack transmission or a ball screw pair transmission, and the gear-rack transmission is preferred in the embodiment, and a servo motor is preferably used as a power source.

For realizing the iron fillings on the washing pin shaft, refer to fig. 1, 3, 4, 5, frame 1 is opened with a through-hole, wiper mechanism 5 is including installing protection casing 51 on the through-hole, being located collection bits case 52 of protection casing 51 below, installing first translation subassembly 53 on frame 1, installing rotating electrical machines 54 at the first translation subassembly 53 output, installing the brush 55 at the rotating electrical machines 54 output and installing the air-blowing subassembly 56 in protection casing 51. The protective cover 51 is provided with a conveying channel which is convenient for conveying the pin shaft, the conveying channel is provided with a strip brush 57, the material claw 3 can clamp the pin shaft to enter or leave the protective cover 51, and the scrap iron can not splash outside the protective cover 51 in the cleaning process. The brush 55 is driven by the rotating motor 54 to rotate and clean the inner hole of the pin shaft under the action of the first translation assembly 53.

Wherein, the preferred cylinder of first translation subassembly 53, the cylinder drive brush 55 makes translational motion to make brush 55 go deep into the round pin axle hole or keep away from the round pin axle, adopts rotating electrical machines 54 drive brush 55 to rotate, makes when making brush 55 go deep into the round pin axle and rotates, and brush 55 leaves and can throw away iron fillings when round pin axle, so that improve cleaning quality. After the brush 55 cleans the pin shaft, the material claw 3 conveys the pin shaft into the air blowing component 56 through the conveying mechanism 2, and iron chips on the inner hole and the outer wall of the pin shaft are blown away through compressed air, so that the cleaning quality is further improved. The scrap collecting box 52 is arranged below the protective cover 51, and the area enclosed by the bottom of the protective cover 51 is smaller than the area enclosed by the top of the scrap collecting box 52, so that the cleaned scrap iron uniformly falls into the scrap collecting box 52.

Further, referring to fig. 5, the air blowing assembly 56 includes two air blowing seats 561 installed in the protection cover 51, wherein first air inlets 562 communicated with an external air compressor are respectively opened at one ends of the two air blowing seats 561, and a plurality of first air outlets 563 communicated with the first air inlets 562 are respectively opened at the side surfaces corresponding to the two air blowing seats 561. The material claw 3 clamps the pin shaft and moves between the two air blowing seats 561 under the driving of the conveying mechanism 2, the blowing direction of air is parallel to the axial lead of the pin shaft, and the air is blown to the pin shaft so as to blow away scrap iron adhered to the inner hole and the outer wall of the pin shaft. Specifically, the first air outlet holes 563 on the two air blowing seats 561 are arranged in a staggered mode, so that air can be blown away from the iron chips conveniently.

In order to detect the length of the pin shaft, referring to fig. 3 and 4, the length measuring mechanism 6 includes a second support 61 mounted on the frame 1, a second translation assembly 62 mounted on the second support 61, and two moving arms 63 mounted at the output end of the second translation assembly 62, the two moving arms 63 are driven by the second translation assembly 62 to move toward or away from each other, clamping blocks 64 for clamping the pin shaft are disposed at corresponding ends of the two moving arms 63, the two clamping blocks 64 are respectively applied to two ends of the pin shaft, one moving arm 63 is mounted with a displacement sensor 65, and the other moving arm 63 is mounted with a round rod 66 which is matched with the displacement sensor 65 to detect the length of the pin shaft.

A detection range value of the displacement sensor 65 is preset, and a qualified product is determined when the current detection result is within the range, otherwise, the qualified product is determined. During detection, the material claw 3 clamps the pin shaft and moves between the two clamping blocks 64 in the conveying mechanism 2, the second translation assembly 62 drives the two moving arms 63 to move oppositely, the two clamping blocks 64 move along with the pin shaft and are clamped at the two ends of the pin shaft, the round rod 66 and the displacement sensor 65 move along with the pin shaft, the tail end of the round rod 66 presses the displacement sensor 65, the displacement sensor 65 detects the movement value of the round rod 66 pushing the detection rod in the displacement sensor 65, when the movement value is qualified products within a preset range value, the material claw 3 clamps the pin shaft and moves above the qualified product disc 7 in the conveying mechanism 2, the material claw 3 releases the pin shaft, and the pin shaft falls into the qualified product disc 7 due to self weight; otherwise, the pin shaft is not qualified, the material claw 3 directly releases the pin shaft, and the pin shaft falls into the unqualified product tray 8 due to dead weight, so that the function of rapidly detecting whether the length of the pin shaft meets the processing technical requirements is realized, and the qualified products and the unqualified products are classified and placed.

In addition, referring to fig. 4, in order to ensure the detection precision of the length measuring mechanism 6, one end of each of the two clamping blocks 64 is provided with a second air inlet communicated with an external air compressor, and the side surface corresponding to the two clamping blocks 64 is provided with a second air outlet communicated with the second air inlet, so that the air can blow away the dust on the surface of the clamping block 64, thereby ensuring the surface cleanness of the clamping block 64 and avoiding the influence of the dust on the detection precision of the length measuring mechanism 6.

Further, referring to fig. 4, the second translation assembly 62 includes a driving cylinder 621 mounted on the second support 61, a gear 622 rotatably connected to the second support 61, and two racks 623 mounted on the two moving arms 63 respectively, wherein the two moving arms 63 are slidably connected to the second support 61 respectively, the moving arm 63 on the right side is connected to the extension bar of the driving cylinder 621, the two racks 623 are engaged with the gear 622 respectively, the two racks 623 are parallel to each other, and the moving directions of the two racks 623 are opposite. The extension rod of the driving cylinder 621 extends or retracts to push the moving arm 63 on the right side to translate, and the two racks 623 respectively cooperate with the gear 622 to drive the moving arm 63 on the left side to translate, so that the two moving arms 63 synchronously move towards or away from each other.

Further, referring to fig. 4, the length measuring mechanism 6 further includes a striking block 67 mounted on the second bracket 61 and a buffer 68 mounted on the moving arm 63 on the right side, the striking block 67 corresponding to the buffer 68 in position so that the buffer 68 can act on the striking block 67. After the extension rod of the driving cylinder 621 extends to drive the moving arm 63 on the right side to translate for a certain distance, the buffer 68 acts on the collision block 67 to enable the two moving arms 63 to slowly approach each other, so that the strong collision between the clamping block 64 and the pin shaft due to the high moving speed of the clamping block 64 is avoided.

In order to facilitate the transfer of the pin shaft on the qualified product by the operator, referring to fig. 1 and 6, the automatic transfer device further comprises a first material guide chute 71 obliquely arranged on the frame 1 and a lifting mechanism 72 installed on the frame 1, wherein the first material guide chute 71 is located between the length measuring mechanism 6 and the qualified product tray 7, the qualified product tray 7 is located above the first material guide chute 71, and the lifting mechanism 72 is used for lifting the pin shaft located at the lower end of the first material guide chute 71 to the qualified product tray 7. The pin rolls down to the lower end along the first material guide groove 71 due to the dead weight, then the lifting mechanism 72 lifts the pin into the qualified product tray 7, and the mounting position of the qualified product tray 7 conforms to the height of a human body for taking objects, so that an operator can conveniently transfer the pin. Preferably, the lifting mechanism 72 adopts a cylinder to push the push block to perform lifting motion, and the top of the push block inclines downwards towards the qualified product tray 7, so that the pin roll falls into the qualified product tray 7 automatically.

In addition, referring to fig. 1, in order to achieve the position for reasonably placing the unqualified product tray 8 and avoid the unqualified product tray 8 from blocking the length of the pin shaft detected by the length measuring mechanism 6, a second material guide groove 81 is obliquely arranged on the rack 1, the upper end of the second material guide groove 81 is positioned below the correlation type photoelectric sensor 9 and the length measuring mechanism 6, and the unqualified product tray 8 is positioned below the second material guide groove 81.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides an automatic cleaning iron fillings and length detection device for round pin axle type work piece, a serial communication port, including frame (1) and defective work dish (8), frame (1) top is provided with transport mechanism (2), and material claw (3) that are used for the centre gripping round pin axle are installed to the output of transport mechanism (2), and frame (1) has set gradually along transport mechanism (2) direction of delivery on the horizontal plane and has been used for conveyer pin axle to material claw (3) below transfer chain (4), wiper mechanism (5) that are used for wasing epaxial iron fillings of round pin, length measuring mechanism (6) that are used for detecting round pin axle length and be used for depositing defective work dish (7) of qualified products, defective work dish (8) are installed in frame (1) to be located the below of length measuring mechanism (6).

2. The automatic cleaning scrap iron and length detection device for the pin shaft type workpiece according to claim 1 is characterized by further comprising a correlation type photoelectric sensor (9) for detecting scrap iron adhered to an inner hole of the pin shaft, wherein the correlation type photoelectric sensor (9) is installed on the rack (1) and is positioned between the cleaning mechanism (5) and the length measuring mechanism (6).

3. The automatic cleaning iron chip and length detection device for the pin shaft type workpiece is characterized in that the conveying line (4) comprises a first support (41), a belt conveying assembly (42), baffle plates (43) and a material detection sensor (44), wherein the first support (41) is installed on the rack (1), the belt conveying assembly (42) is installed on the first support (41), the two baffle plates (43) are installed on the first support (41) and located on two sides of the belt conveying assembly (42), and the material detection sensor (44) is installed at the conveying tail end of the belt conveying assembly (42) and is used for detecting the pin shaft.

4. The automatic cleaning iron chip and length detection device for the pin shaft type workpieces is characterized in that the conveying mechanism (2) comprises a transverse conveying assembly (21) arranged at the top of the rack (1) and a lifting assembly (22) arranged at the output end of the transverse conveying assembly (21), the material claw (3) is arranged at the output end of the lifting assembly (22), and the material claw (3) can grab the pin shaft on the conveying line (4) under the action of the lifting assembly (22).

5. The automatic cleaning scrap iron and length detection device for the pin shaft type workpieces as claimed in claim 1, the automatic cleaning machine is characterized in that a through hole is formed in the rack (1), the cleaning mechanism (5) comprises a protective cover (51) installed on the through hole, a scrap collecting box (52) located below the protective cover (51), a first translation assembly (53) installed on the rack (1), a rotating motor (54) installed at the output end of the first translation assembly (53), a brush (55) installed at the output end of the rotating motor (54) and an air blowing assembly (56) installed in the protective cover (51), a conveying channel convenient for conveying pin shafts is formed in the protective cover (51), a strip brush (57) is arranged on the conveying channel, the brush (55) is driven by the rotating motor (54) to rotate, and the inner holes of the pin shafts are cleaned under the action of the first translation assembly (53).

6. The automatic cleaning iron chip and length detection device for the pin shaft workpieces as claimed in claim 5, wherein the air blowing assembly (56) comprises two air blowing seats (561) installed in the protective cover (51), one ends of the two air blowing seats (561) are respectively provided with a first air inlet (562) communicated with an external air compressor, and the corresponding side surfaces of the two air blowing seats (561) are respectively provided with a plurality of first air outlet holes (563) communicated with the first air inlet (562).

7. The automatic cleaning iron chip and length detection device for the pin shaft type workpiece according to claim 1 is characterized in that the length measuring mechanism (6) comprises a second support (61) installed on the rack (1), a second translation assembly (62) installed on the second support (61), and two moving arms (63) installed at the output end of the second translation assembly (62), the two moving arms (63) move towards or away from each other under the driving of the second translation assembly (62), clamping blocks (64) for clamping the pin shaft are arranged at the corresponding ends of the two moving arms (63), a displacement sensor (65) is installed on one moving arm (63), and a round rod (66) matched with the displacement sensor (65) to detect the length of the pin shaft is installed on the other moving arm (63).

8. The automatic cleaning iron filings and length detection device for the pin shaft type workpieces as claimed in claim 7, characterized in that said second translation assembly (62) comprises a driving cylinder (621) mounted on said second bracket (61), a gear (622) rotatably connected with the second bracket (61) and two racks (623) respectively mounted on two moving arms (63), two moving arms (63) are respectively connected with the second bracket (61) in a sliding manner, one moving arm (63) is connected with an extension rod of the driving cylinder (621), and two racks (623) are respectively engaged with the gear (622).

9. The automatic cleaning iron filings and length detection device for the pin-like workpieces according to claim 7 or 8, characterized in that said length measuring mechanism (6) further comprises a striking block (67) mounted on said second support (61) and a buffer (68) mounted on one of its moving arms (63), the position of the striking block (67) corresponding to that of the buffer (68) being such that the buffer (68) can act on the striking block (67).

10. The automatic cleaning scrap iron and length detection device for the pin shaft type workpieces as claimed in claim 1, further comprising a first guide chute (71) obliquely arranged on the rack (1) and a lifting mechanism (72) installed on the rack (1), wherein the first guide chute (71) is located between the length measuring mechanism (6) and the qualified product tray (7), the qualified product tray (7) is located above the first guide chute (71), and the lifting mechanism (72) is used for lifting a pin shaft located at the lower end of the first guide chute (71) to the qualified product tray (7).

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