CN212240145U

CN212240145U - Workpiece positioning device on piston milling chamfering production line

Info

Publication number: CN212240145U
Application number: CN202021264219.XU
Authority: CN
Inventors: 朱先华; 曹勤新; 陆建良
Original assignee: Jiaxing Haoyuan Precision Machinery Co ltd
Current assignee: Jiaxing Haoyuan Precision Machinery Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2020-12-29
Anticipated expiration: 2030-07-01

Abstract

The utility model provides a workpiece positioning device on piston milling chamfer production line belongs to machining equipment technical field. Including a plurality of piston work pieces and frame, work piece positioner is including fixing the installation piece in the frame, set up on the installation piece with the bar mounting hole department on the piston work piece on the guiding hole on same straight line, still vertically be provided with on the installation piece with the guiding hole vertically dodge the hole, it is equipped with the locating lever that two symmetries set up to dodge downthehole interpolation, the locating lever includes the guiding part and the sliding connection of sliding connection in the guiding hole and dodges downthehole location portion, location portion stretches out on dodging the hole, be connected with one between the pore wall of the outer end of guiding part and guiding hole and order about the reed that the locating lever removed to the guiding hole middle part, the lower extreme of guiding part has the location inclined plane of a wedge type, the bottom surface at the middle. The utility model has the advantages of can the automatic adjustment work piece the position etc.

Description

Workpiece positioning device on piston milling chamfering production line

Technical Field

The utility model belongs to the technical field of machining equipment, a work piece positioner on piston milling chamfer production line is related to.

Background

The piston of the compressor on the refrigerator comprises a columnar body, wherein one end of the columnar body is provided with a strip-shaped mounting hole, the columnar body is provided with a pin hole penetrating through the strip-shaped mounting hole, the axis of the pin hole is vertical to the length direction of the strip-shaped mounting hole, and in order to enable the outer end of a pin shaft to be positioned in the outer peripheral surface of the piston, a chamfer surface is milled on the outer peripheral surface of the columnar body provided with the pin hole, so that the position is formed on the outer peripheral surface of the columnar body to form a concave part for avoiding the outer end of the pin shaft or avoiding a clamp spring for fixing; the chamfer surface is positioned at the cutting groove.

Because the piston size that compressor was used on the refrigerator is less, there are difficult problems such as location, pan feeding, ejection of compact in the processing of accurate milling chamfer on the basis of foundry goods blank.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists to current technique, provide a work piece positioner on piston milling chamfer production line, the utility model discloses the technical problem that will solve is how to adjust the position of work piece to the position of adjustment processing.

The purpose of the utility model can be realized by the following technical proposal: a workpiece positioning device on a piston milling chamfer production line is characterized by comprising a plurality of piston workpieces and a rack, wherein the workpiece positioning device comprises a mounting block fixed on the rack, the mounting block is provided with a guide hole which is positioned on the same straight line with the strip-shaped mounting hole on the piston workpiece, the mounting block is also longitudinally provided with an avoidance hole which is vertical to the guide hole, two symmetrically arranged positioning rods are inserted in the avoidance hole, the positioning rod comprises a guide part which is connected in the guide hole in a sliding way and a positioning part which is connected in the avoiding hole in a sliding way, the positioning part extends out of the avoidance hole, a reed for driving the positioning rod to move towards the middle part of the guide hole is connected between the outer end of the guide part and the hole wall of the guide hole, the lower end of the guide part is provided with a wedge-shaped positioning inclined plane, and the bottom surface of the middle part of the guide hole is provided with a convex block matched with the positioning inclined plane.

Furthermore, a compression structure in one-to-one correspondence with the positioning devices is arranged on the rack, the compression structure comprises a pressure arm hinged on the rack, one end of the pressure arm is connected with a hydraulic cylinder, the middle part of the pressure arm is hinged on the rack, and the other end of the pressure arm is provided with a compression block capable of extruding a piston workpiece positioned on the positioning rod.

The piston workpiece is under the effect of a workpiece taking manipulator, the workpiece can be located on the positioning rods, in an initial state, the two positioning rods are close to each other under the effect of the reed, the overall dimension of the two positioning rods is smaller than the width of the strip-shaped mounting hole of the piston workpiece, the strip-shaped mounting hole of the piston workpiece can be freely sleeved on the two positioning rods, the pressing mechanism presses the end face of the piston rod piece downwards, the piston rod piece moves downwards, meanwhile, the positioning inclined plane at the lower end of the guide part moves towards the outer side of the guide hole under the effect of the lug, the distance between the two positioning rods is enlarged, the piston rod piece can be adjusted to be in a state that the length direction of the strip-shaped mounting hole is consistent with the opening direction of the two positioning rods, and the purpose of positioning before the chamfering is conducted on the piston workpiece.

Drawings

FIG. 1 is a schematic view of the production line

Fig. 2 is a schematic perspective view of fig. 1 with the peripheral plate of the frame and the sorting device removed.

Fig. 3 is a schematic perspective view of a piston workpiece.

Fig. 4 is a schematic structural view of the positioning device before the piston workpiece is pressed.

Fig. 5 is a schematic structural diagram of the positioning device after the piston workpiece is pressed.

Fig. 6 is a schematic perspective view of the screening device.

Fig. 7 is a schematic perspective view of the sorting block.

Fig. 8 is a perspective view of the turntable.

Fig. 9 is an enlarged view of a portion a in fig. 2.

Fig. 10 is a schematic plan view of a bar transfer piston workpiece.

In the figure, 1, a piston workpiece; 11. a strip-shaped mounting hole; 12. cutting a groove; 13. chamfering; 2. a frame; 21. a feeding conveying groove; 22. a rotating drum; 23. sorting a material conveying channel; 24. a blanking conveying trough; 25. a pick-up manipulator; 26. milling a chamfering manipulator; 31. selecting blocks; 32. blocking strips; 33. a material guide plate; 34. a first sorting bar; 35. a notch; 36. a second sorting bar; 37. a material feeding bridge; 41. mounting blocks; 42. a guide hole; 43. avoiding holes; 44. a positioning part; 45. a guide portion; 46. a reed; 47. positioning the inclined plane; 48. a bump; 49. pressing the arm; 51. a turntable; 52. dialing a plate; 53. a discharge channel; 54. a take-up pan; 55. and (7) conducting strips.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2, fig. 3 and fig. 9, the piston workpiece sorting device comprises a plurality of piston workpieces 1, a frame 2, and a feeding mechanism, a positioning mechanism, a chamfering mechanism and a discharging mechanism which are sequentially arranged on the frame 2, wherein the feeding mechanism comprises a sorting device and a feeding conveying groove 21, the sorting device comprises a rotary drum 22 which is rotatably connected to the frame 2 and a sorting material-feeding channel 23 which is fixed on the frame 2, and the discharging end of the sorting material-feeding channel 23 is connected with the feeding conveying groove 21; the blanking mechanism comprises a blanking conveying groove 24 and a discharging device; the positioning mechanism comprises two positioning devices and two workpiece taking manipulators 25, one positioning device is close to the feeding conveying groove 21, the other positioning device is close to the discharging conveying groove 24, the chamfering and milling mechanism comprises two chamfering and milling manipulators 26 respectively corresponding to the two positioning devices, the chamfering and milling manipulators 26 can carry a milling cutter to mill and chamfer the piston workpieces 1 on the corresponding positioning devices, and one workpiece taking manipulator 25 can grab the piston workpieces 1 on the feeding conveying groove 21 one by one onto the positioning devices close to the feeding conveying groove 21; the other part taking manipulator 25 can grab the piston workpiece 1 close to the feeding conveying groove 21 to the positioning device close to the discharging conveying groove 24, and grab the piston workpiece 1 to the discharging conveying groove 24 after the chamfering is finished.

After the piston workpieces 1 are selected, the piston workpieces enter the feeding conveying groove 21 in the same position state, then the piston workpieces are respectively placed on the two positioning devices through the workpiece taking manipulator 25, when each positioning device is located, the milling chamfering machining of one chamfering surface 13 of each piston workpiece 1 is completed through the chamfering milling manipulator 26, after the two chamfering surfaces 13 are milled and chamfered, the workpiece which is milled and chamfered is grabbed into the discharging conveying groove 24 through the workpiece taking manipulator 25, and then the workpiece is output through the discharging mechanism.

As shown in fig. 2, 6 and 7, the sorting material channel 23 is disposed on a sorting block 31, the sorting block 31 is located in the rotary drum 22, the sorting material channel 23 is a space between two parallel blocking strips 32 disposed on the sorting block 31, an inlet of the sorting material channel 23 is close to the bottom surface of the rotary drum 22, two inclined guide plates 33 are disposed at the inlet of the sorting material channel 23, the guide plates 33 are fixed on the sorting block 31, a first sorting strip 34 is connected between the two guide plates 33, one end of the first sorting strip 34 is fixed at an outer end of one of the guide plates 33, the other end of the first sorting strip 34 is fixed at a middle portion of the other guide plate 33, a first sorting groove for allowing only piston workpieces 1 whose peripheral surfaces are close to the bottom of the rotary drum 22 to pass is formed between the first sorting strip 34 and the bottom of the rotary drum 22, one of the blocking strips 32 in the middle portion of the sorting material channel has a notch 35, the bottom of the sorting material conveying groove is provided with a plurality of second sorting rods 36 positioned at the notches 35, each second sorting rod 36 is in smooth transition with the bottom of the sorting material conveying groove, the free end of each second sorting rod 36 faces the notches 35, the length of each second sorting rod 36 is smaller than the width of the sorting material conveying groove, the feeding conveying groove 21 is connected with the notches 35, a guide inclined plane is arranged between each notch 35 and the corresponding feeding sorting groove, and the tail end of the sorting material conveying channel 23 is communicated with the inner cavity of the rotary drum 22.

The middle part of the sorting and feeding channel 23 is higher than the two ends. The feeding conveying groove 21 is communicated with the notch 35 through a feeding bridge 37, a chute allowing the piston workpiece 1 to pass through is formed in the feeding bridge 37, a limiting piece limiting the piston workpiece 1 to be separated from the chute is arranged at an opening of the chute, the feeding bridge 37 is spiral, and the piston workpiece 1 on the opening is overturned by the feeding bridge 37 and then conveyed into the feeding conveying groove 21.

The rotary drum 22 rotates, particularly under the condition of material guiding, the piston workpiece 1 can enter the sorting material-conveying channel 23, the piston workpiece 1 vertically arranged in the rotary drum 22 can not enter the sorting material-conveying trough under the action of the first sorting bar 34, because the height of the piston workpiece 1 is larger than the diameter, the piston workpiece 1 which is only in a rolling state in the rotary drum 22 can enter the sorting material-conveying trough, under the stirring action of the sorting block 31 on the piston workpiece 1 in the rotary drum 22, the piston workpiece 1 can turn or roll under the stirring action, so that the piston workpiece 1 which is temporarily not capable of entering the sorting material-conveying channel 23 has the opportunity to enter again, the piston workpiece 1 which rolls into the sorting material-conveying channel 23 runs to the notch 35 along the sorting material-conveying channel 23, because one end of the piston workpiece 1 is open, the piston workpiece 1 which is opposite to the notch 35 is light because of the open end, and the end without the opening is heavy and topples, the toppled end slides into the material conveying bridge 37 through the guide inclined plane, the piston workpieces 1 which cannot be toppled are pushed down one by one in the inlet direction and fall into the rotary drum 22 again from the tail end, the piston workpieces 1 entering the material conveying bridge 37 are opened upwards, and the workpieces with the upward openings are turned over under the action of the spiral material conveying bridge 37, so that the openings face downwards and enter the feeding conveying groove 21.

As shown in fig. 2, 4, and 5, the positioning device includes a mounting block 41 fixed on the frame 2, a guide hole 42 in the same straight line with the bar-shaped mounting hole 11 on the piston workpiece 1 is formed in the mounting block 41, an avoiding hole 43 perpendicular to the guide hole 42 is further longitudinally formed in the mounting block 41, two symmetrically-arranged positioning rods are inserted into the avoiding hole 43, each positioning rod includes a guide portion 45 slidably connected in the guide hole 42 and a positioning portion 44 slidably connected in the avoiding hole 43, the positioning portion 44 extends out of the avoiding hole 43, a spring 46 for driving the positioning rod to move toward the middle of the guide hole 42 is connected between the outer end of the guide portion 45 and the hole wall of the guide hole 42, a wedge-shaped positioning inclined surface 47 is formed at the lower end of the guide portion 45, and a protrusion 48 adapted to the positioning inclined surface 47 is formed on the bottom surface of the middle of the guide hole 42.

The pressing structure is provided with a positioning device in one-to-one correspondence with the frame 2 and comprises a pressing arm 49 hinged on the frame 2, one end of the pressing arm 49 is connected with a hydraulic cylinder, the middle part of the pressing arm 49 is hinged on the frame 2, and the other end of the pressing arm 49 is provided with a pressing block capable of extruding the piston workpiece 1 positioned on the positioning rod.

Under the action of the workpiece taking manipulator 25, the piston workpiece 1 can be positioned on the positioning rods, in an initial state, the two positioning rods are close to each other under the action of the reed 46, the overall dimension of the two positioning rods is smaller than the width of the strip-shaped mounting hole 11 of the piston workpiece 1, therefore, the strip-shaped mounting hole 11 of the piston workpiece 1 can be freely sleeved on the two positioning rods, the pressing mechanism presses down the end face of the piston rod to move the piston rod downwards, meanwhile, the positioning inclined plane 47 at the lower end of the guide part 45 moves towards the outer side of the guide hole 42 under the action of the bump 48, the distance between the two positioning rods is enlarged, the piston rod can be adjusted to be in a state that the length direction of the strip-shaped mounting hole 11 is consistent with the opening direction of the two positioning rods, and the purpose of positioning before the chamfering milling manipulator 26 is used for milling the piston workpiece 1 is.

As shown in fig. 2, 8 and 10, the discharging device includes a rotating disc 51, the rotating disc 51 is rotatably connected to the frame 2, the end of the discharging conveying chute is located above the rotating disc 51, a shifting plate 52 fixed on the frame 2 is arranged above the rotating disc 51, one end of the shifting plate 52 along the rotating direction of the rotating disc 51 is close to the center of the rotating disc 51, a discharging port is arranged at the center of the rotating disc 51, the discharging port penetrates through the upper and lower surfaces of the rotating disc 51, a discharging channel 53 in smooth transition with the upper surface of the rotating disc 51 is arranged at the discharging port, the inlet of the discharging channel 53 has a guiding part 45 with a larger width, the end of the discharging channel 53 is located below the rotating disc 51, a receiving disc 54 is fixedly arranged on the frame 2, a plurality of guiding assemblies are connected to the receiving disc 54, each guiding assembly includes two guiding bars 55, the gap and the height between the two guiding bars 55 are adapted, the guide bar 55 is gradually declined from the head end to the tail end.

The cutting groove 12 of the piston workpiece 1 is located in the middle of the peripheral surface of the piston workpiece 1, the guide bars 55 are fixed on the material receiving tray 54, the piston workpiece 1 is stacked and pushed in the material receiving tray 54, so that the piston workpiece 1 can slide away from the material receiving tray 54 along the two guide bars 55, and the tail ends of the two guide bars 55 are provided with packaging containers, so that the piston workpiece 1 can enter the packaging containers in order.

The dial plate 52 functions as: on one hand, the piston workpieces 1 are prevented from being accumulated at the outlet of the discharging conveying groove, on the other hand, the piston workpieces 1 are driven to move towards the middle of the rotary disc 51, so that the piston workpieces 1 can enter the discharging channel 53 at the discharging opening, the piston workpieces 1 fall into the receiving disc 54 through the discharging channel 53, and the receiving disc 54 is fixed on the rack 2, so that the piston workpieces 1 enter the static receiving disc 54 and are conveyed into a packaging container under the action of the material guide assembly.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a workpiece positioning device on piston mills chamfer production line, its characterized in that, piston mills chamfer production line and includes a plurality of piston work pieces (1) and frame (2), and workpiece positioning device is including fixing installation piece (41) on frame (2), set up on installation piece (41) with bar mounting hole (11) on piston work piece (1) be in guiding hole (42) on the collinear, still vertically be provided with on installation piece (41) and dodge hole (43) with guiding hole (42) vertically, dodge the locating lever that hole (43) interpolation was equipped with two symmetries and set up, the locating lever includes guide part (45) and the sliding connection of sliding connection in guiding hole (42) and location portion (44) in dodging hole (43), location portion (44) stretch out on dodging hole (43), be connected with one between the pore wall of the outer end of guide part (45) and guiding hole (42) and order to about the spring that moves to guiding hole (42) middle part The lower end of the guide part (45) is provided with a wedge-shaped positioning inclined plane (47), and the bottom surface of the middle part of the guide hole (42) is provided with a convex block (48) matched with the positioning inclined plane (47).

2. The workpiece positioning device on the piston milling chamfer production line is characterized in that the rack (2) is provided with a one-to-one corresponding pressing structure of the positioning device, the pressing structure comprises a pressing arm (49) hinged on the rack (2), one end of the pressing arm (49) is connected with a hydraulic cylinder, the middle part of the pressing arm (49) is hinged on the rack (2), and the other end of the pressing arm (49) is provided with a pressing block capable of pressing the piston workpiece (1) on the positioning rod.