CN111318914B - Automatic unloading mechanism of going up of numerically controlled fraise machine that can turn over face - Google Patents

Automatic unloading mechanism of going up of numerically controlled fraise machine that can turn over face Download PDF

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Publication number
CN111318914B
CN111318914B CN202010138340.6A CN202010138340A CN111318914B CN 111318914 B CN111318914 B CN 111318914B CN 202010138340 A CN202010138340 A CN 202010138340A CN 111318914 B CN111318914 B CN 111318914B
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block
primary
cam
locking
positioning
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CN111318914A (en
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张集
高伟亚
谭元英
石锦成
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Shanghai Workpower Telecom Technology Co ltd
Guizhou Space Appliance Co Ltd
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Shanghai Workpower Telecom Technology Co ltd
Guizhou Space Appliance Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06Work-clamping means
    • B23Q3/08Work-clamping means other than mechanically-actuated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/18Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2703/00Work clamping
    • B23Q2703/02Work clamping means
    • B23Q2703/04Work clamping means using fluid means or a vacuum
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

A reversible automatic feeding and discharging mechanism of a numerical control milling machine comprises a feeding mechanism, a primary positioning mechanism, a turnover mechanism, a secondary positioning mechanism, a mounting bracket, a material collecting box, a cam tightening and loosening mechanism, a discharging mechanism and a scrap removing mechanism; the middle part of the top of the mounting bracket is provided with a turnover mechanism, the two transverse sides of the turnover mechanism are symmetrically provided with the primary positioning mechanism and the secondary positioning mechanism, the inlet end of the primary positioning mechanism is provided with a feeding mechanism, and the feeding mechanism is used for conveying an unprocessed part to the primary positioning mechanism; the primary positioning mechanism and the secondary positioning mechanism are used for clamping and fixing the parts; the turnover mechanism is used for driving the part to turn over; according to the invention, the turnover mechanism can be used for turning the machining surface of the part, so that the front and back surfaces of the part can be machined, the application range of the machine tool is effectively improved, the positioning during two times of machining can be realized by using the primary positioning mechanism and the secondary positioning mechanism, and the stable machining is ensured.

Description

Automatic unloading mechanism of going up of numerically controlled fraise machine that can turn over face
Technical Field
The invention belongs to the technical field of machining of numerical control milling machines, and particularly relates to an automatic loading and unloading mechanism of a reversible numerical control milling machine.
Background
In the numerical control machining of the milling machine, in order to find and replace human beings to do repeated labor of this kind, people have designed some automatic unloader of milling machine, the most adoption at present adopts the manipulator to carry out automatic unloading outside the milling machine, also has some to carry out the method of installing unloader on the inside workstation of milling machine, for example patent number CN109175482A has designed an automatic unloader of immersible pump impeller numerical control milling machine, design an automatic unloader of unloader on the workstation of milling machine, adopt the vibration dish material loading, accomplish the work of putting the blank and getting the finished product. The automatic loading and unloading device of the numerical control milling machine designed at present does not have the capability of processing two sides of a part, the specification of the adaptive part is single, and a new automatic loading and unloading device of the numerical control milling machine needs to be designed in order to enable the automatic loading and unloading mechanism to have the function of processing the front side and the back side.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an automatic feeding and discharging mechanism of a reversible numerical control milling machine, which has the following specific technical scheme:
a reversible automatic feeding and discharging mechanism of a numerical control milling machine comprises a feeding mechanism, a primary positioning mechanism, a turnover mechanism, a secondary positioning mechanism, a mounting bracket, a material collecting box, a cam tightening mechanism, a discharging mechanism and a scrap removing mechanism;
the middle part of the top of the mounting bracket is provided with a turnover mechanism, the two transverse sides of the turnover mechanism are symmetrically provided with the primary positioning mechanism and the secondary positioning mechanism, the inlet end of the primary positioning mechanism is provided with a feeding mechanism, and the feeding mechanism is used for conveying an unprocessed part to the primary positioning mechanism; the primary positioning mechanism and the secondary positioning mechanism are used for clamping and fixing the parts; the turnover mechanism is used for driving the part to turn over;
the material receiving box and the scrap removing mechanism are symmetrically arranged on two longitudinal sides of the turnover mechanism, the scrap removing mechanism is used for blowing away scraps, and the material receiving box is used for collecting the processed parts; the cam tightening mechanism is arranged between the material collecting box and the turnover mechanism and used for controlling the opening and closing of the primary positioning mechanism and the secondary positioning mechanism; and the top of the secondary positioning mechanism is provided with a discharging mechanism.
Further, the primary positioning mechanism comprises a primary positioning block, a primary locking block and a cam connecting rod; the side surface of the output shaft of the turnover mechanism is vertically connected with two primary positioning blocks, the primary positioning blocks are arranged in a mirror symmetry mode, the area between the two primary positioning blocks is a primary part storage area, the primary part storage area is internally embedded with parts, the primary positioning block close to the material receiving box is an action positioning block, the top surface of the action positioning block is embedded with the primary locking block in a sliding way, the action positioning block is connected with the primary locking block through a spring telescopic structure, the primary locking block is used for clamping parts at one time, the outer side surface of the action positioning block is provided with a cam connecting rod, the convex part of the cam connecting rod is attached to the primary locking block, the cam connecting rod is used for inwards extruding the primary locking block, the cam connecting rod is connected with the cam tightening and loosening mechanism, and the cam tightening and loosening mechanism is used for driving the cam connecting rod to rotate.
Further, the cam connecting rod comprises a central column, an outer cam and a connecting rod, the central column is fixed on the outer wall of the primary locking block, the outer portion of the central column is rotatably connected with the outer cam, a self-locking structure is installed at the rotating connection position of the central column and the outer cam, and the connecting rod is arranged on the outer wall of the outer cam.
Furthermore, the primary positioning mechanism also comprises a fixed cylinder, an upper sliding groove block, a lower sliding groove block, a bracket, an upper cam follower, a lower cam follower, a transmission connecting rod and a pressing connecting rod; the output end of the fixed cylinder is connected with the support, the support is connected with the upper and lower sliding groove blocks in a sliding mode, the upper and lower sliding groove blocks are connected with the upper and lower cam followers in an inner connection mode, the upper and lower cam followers are connected with the two transmission connecting rods in a rotating mode, the end portions of the transmission connecting rods are connected with the pressing connecting rods in a rotating mode, the upper and lower sliding groove blocks are used for driving the pressing connecting rods to move up and down, the outer end portion of the primary positioning block is provided with a locking groove, the pressing connecting rods are clamped on the locking groove, and the pressing connecting rods are used for pressing the primary positioning block downwards.
Further, secondary positioning mechanism includes secondary cylinder, secondary locking mechanism, secondary locating piece, secondary latch segment, the secondary locating piece is fixed in on the installing support, two secondary latch segments of inside sliding connection of secondary locating piece, two the secondary latch segment mirror image sets up, the region between the secondary latch segment is the secondary part storage area, the inside embedding of secondary part storage area has the part, secondary locking mechanism is pegged graft to the outer tip of secondary locating piece, secondary cylinder is connected to the outer terminal surface of secondary locking mechanism, secondary locking mechanism is used for driving the secondary latch segment draws close.
Furthermore, a rectangular opening is formed in the outer end face of the secondary positioning block, a T-shaped groove is formed in the secondary positioning block, the T-shaped groove is communicated with the rectangular opening, a matched wedge block is arranged on the bottom face of the secondary locking block, the matched wedge block is slidably embedded in the T-shaped groove through a spring telescopic structure, the secondary locking mechanism comprises a fixed seat and an active wedge block, an active wedge block is arranged on the inner side face of the fixed seat in a mirror symmetry manner, the active wedge block is inserted into the rectangular opening, and the inner face of the fixed seat is fixedly connected with the secondary cylinder; the active wedge is used for extruding the matched wedge from outside to inside.
Further, the cam straining device includes locking post, unblock post, promotes piece and a locking cylinder, promote piece slidable mounting in on the installing support, the one end that promotes the piece is connected a locking cylinder, the top surface outer end that promotes the piece is equipped with perpendicularly the locking post, the top surface middle part that promotes the piece is equipped with perpendicularly the unblock post, the locking post laminate in the connecting rod is kept away from one side of a locking cylinder, the unblock post is located relatively the outside of secondary locating piece, the locking post is used for driving outer cam rotates the locking, the unblock post is used for driving outer cam rotates and resets.
Furthermore, the feeding mechanism comprises a storage bin, a feeding cylinder, a feeding push block, a sliding groove block, a partition plate and an adjusting screw; feed bin fixed mounting in on the spout piece, the storage hole has been seted up to the inside of feed bin, the storage hole is used for piling up the part, the inside slidable mounting of storage hole has the baffle, the side of baffle is connected with adjusting screw, the adjusting screw thread is overhanging the feed bin, the middle part of spout piece slides and runs through there is the material loading ejector pad, the material loading ejector pad passes the bottom of storage hole, the outer end of material loading ejector pad is connected the material loading cylinder, the material loading ejector pad with the relative setting in primary part storage area.
Further, the turnover mechanism comprises a turnover cylinder, a rack, a gear and a rotating shaft; the primary positioning block is arranged on the outer wall of the rotating shaft, the rotating shaft is arranged at the output end of the gear, the gear is meshed and connected with the rack, and the rack is fixedly connected with the overturning cylinder.
Furthermore, the scrap removing mechanism comprises a scrap removing cylinder, an air blowing plate and an air vent, the scrap removing cylinder is installed at the top of the turnover mechanism and is fixedly connected with the air blowing plate, a plurality of air outlet holes are formed in the bottom surface of the air blowing plate, and the air vent is arranged at the inlet of the air blowing plate.
The invention has the beneficial effects that:
utilize tilting mechanism can realize the processing face of part upset, and the positive and negative two-sided processing has effectually improved the application scope of lathe, utilizes once positioning mechanism and secondary positioning mechanism can realize twice location of adding man-hour, guarantees stable processing.
Drawings
FIG. 1 is a schematic structural view of an automatic loading and unloading mechanism of a reversible numerically controlled milling machine according to the present invention;
FIG. 2 shows a schematic view of the feed mechanism of the present invention;
FIG. 3 shows a schematic view of a one-time positioning configuration of the present invention;
FIG. 4 shows a schematic structural diagram of the turnover mechanism of the present invention;
FIG. 5 shows a schematic structural view of the secondary positioning mechanism of the present invention;
FIG. 6 is a schematic view showing the connection structure of the driving wedge and the matching wedge of the present invention;
FIG. 7 shows a structural schematic of the discharge state of the present invention;
FIG. 8 shows a schematic view of the chip removing mechanism of the present invention;
FIG. 9 is a schematic view of the locked state of the cam links of the present invention;
fig. 10 is a schematic view showing the unlocked state of the cam link according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A reversible automatic loading and unloading mechanism of a numerical control milling machine comprises a loading mechanism 1, a primary positioning mechanism 2, a turnover mechanism 3, a secondary positioning mechanism 4, a mounting bracket 5, a material receiving box 6, a cam tightening mechanism 7, a discharging mechanism 8 and a chip removing mechanism 9;
the middle part of the top of the mounting bracket 5 is provided with a turnover mechanism 3, the two transverse sides of the turnover mechanism 3 are symmetrically provided with the primary positioning mechanism 2 and the secondary positioning mechanism 4, the inlet end of the primary positioning mechanism 2 is provided with a feeding mechanism 1, and the feeding mechanism 1 is used for conveying an unprocessed part to the primary positioning mechanism 2; the primary positioning mechanism 2 and the secondary positioning mechanism 4 are used for clamping and fixing parts; the turnover mechanism 3 is used for driving the part to turn over;
the longitudinal two sides of the turnover mechanism 3 are symmetrically provided with the material collecting box 6 and the scrap removing mechanism 9, the scrap removing mechanism 9 is used for blowing away scraps, and the material collecting box 6 is used for collecting the processed parts; the cam tightening mechanism 7 is arranged between the material collecting box 6 and the turnover mechanism 3, and the cam tightening mechanism 7 is used for controlling the opening and closing of the primary positioning mechanism 2 and the secondary positioning mechanism 4; the top of the secondary positioning mechanism 4 is provided with a discharging mechanism 8; the turnover mechanism 3 can be used for turning the machined surface of the part, so that double-sided machining of the front surface and the back surface is realized, the application range of the machine tool is effectively improved, positioning during two times of machining can be realized by using the primary positioning mechanism 2 and the secondary positioning mechanism 4, and stable machining is guaranteed; the discharging mechanism 8 is used for automatically grabbing parts to the material receiving box 6 after machining is finished.
As an improvement of the above technical solution, the primary positioning mechanism 2 includes a primary positioning block 27, a primary locking block 28, and a cam link 29; the side surface of the output shaft of the turnover mechanism 3 is vertically connected with two primary positioning blocks 27, the primary positioning blocks 27 are arranged in a mirror symmetry mode, the area between the two primary positioning blocks 27 is a primary part storage area, parts are embedded in the primary part storage area, the primary part storage area is used for storing the fed parts, and the primary positioning blocks 27 are used for preliminarily constraining the parts from the side part and supporting the parts from the bottom;
the primary positioning block 27 close to the material receiving box 6 is an action positioning block, the primary locking block 28 is embedded into the top surface of the action positioning block in a sliding manner, and the action positioning block is connected with the primary locking block 28 through a spring telescopic structure; the spring telescopic structure is adopted to ensure that the primary locking block 28 compresses the spring when sliding inwards and can slide outwards to reset under the action of the spring when external force is lost;
the primary locking block 28 is used for clamping parts at one time, a cam connecting rod 29 is installed on the outer side face of the action positioning block, the convex part of the cam connecting rod 29 is attached to the primary locking block 28, the cam connecting rod 29 is used for inwards extruding the primary locking block 28, the cam connecting rod 29 is connected with the cam tightening mechanism 7, and the cam tightening mechanism 7 is used for driving the cam connecting rod 29 to rotate; the cam link 29 is adapted to rotate inwardly to compress the primary lock block 28.
As an improvement of the above technical solution, the cam link 29 includes a central column 291, an outer cam 292, and a link 293, the central column 291 is fixed on an outer wall of the primary locking block, the outer portion of the central column 291 is rotatably connected with the outer cam 292, a self-locking structure is installed at a rotational connection position of the central column 291 and the outer cam 292, and the outer wall of the outer cam 292 is provided with the link 293; the connecting rod 293 is used for applying a rotating force to the outer cam 292, the outer cam 292 is used for extruding a locking block once, the central column 291 is a rotating shaft of the outer cam 292, and a self-locking structure is arranged for ensuring that the outer cam 292 cannot rotate after rotating to a required position unless a large transverse external force is applied.
As an improvement of the above technical solution, the primary positioning mechanism 2 further includes a fixed cylinder 21, upper and lower chute blocks 22, a bracket 23, upper and lower cam followers 24, a transmission link 25, and a pressing link 26; the output end of the fixed cylinder 21 is connected with the bracket 23, the bracket 23 is slidably connected with the upper and lower chute blocks 21, the inner parts of the upper and lower chute blocks 21 are connected with the upper and lower cam followers 24, the upper and lower cam followers 24 are rotatably connected with the two transmission connecting rods 25, the ends of the transmission connecting rods 25 are rotatably connected with the pressing connecting rods 26, the upper and lower chute blocks 22 are used for driving the pressing connecting rods 26 to move up and down, the outer end parts of the primary positioning blocks 27 are provided with locking grooves, the pressing connecting rods 26 are clamped on the locking grooves, and the pressing connecting rods 26 are used for pressing the primary positioning blocks 27 downwards; in order to ensure the stability of the processing process, the primary positioning block 27 can be pressed and locked by the pressing connecting rod 26, so that the primary positioning block 27 is prevented from shaking in the processing process.
As an improvement of the above technical solution, the secondary positioning mechanism 4 includes a secondary cylinder 41, a secondary locking mechanism 42, a secondary positioning block 43, and a secondary locking block 44, the secondary positioning block 43 is fixed on the mounting bracket 5, the inside of the secondary positioning block 43 is slidably connected with two secondary locking blocks 44, the two secondary locking blocks 44 are arranged in a mirror image manner, the area between the secondary locking blocks 44 is a secondary part storage area, and a part is embedded in the secondary part storage area; the secondary locking block 44 is used for clamping the fixed part from two sides;
the outer end of the secondary positioning block 43 is inserted with a secondary locking mechanism 42, the outer end face of the secondary locking mechanism 42 is connected with the secondary cylinder 41, and the secondary locking mechanism 42 is used for driving the secondary locking block 44 to close.
As an improvement of the above technical solution, a rectangular opening 432 is formed in an outer end surface of the secondary positioning block 43, a T-shaped groove 431 is formed in the secondary positioning block 43, the T-shaped groove 431 is communicated with the rectangular opening 432, a matching wedge 441 is arranged on a bottom surface of the secondary locking block 44, and the matching wedge 441 is slidably embedded in the T-shaped groove 431 through a spring telescopic structure; the spring telescopic structure can realize that the spring is compressed when the matched wedge 441 is clamped, and the spring drives the matched wedge to reset when external force is not applied; the T-shaped groove can prevent the secondary locking block 44 from deviating and can play a role in positioning;
the secondary locking mechanism 42 comprises a fixed seat 421 and an active wedge 422, the active wedge 422 is arranged on the inner side surface of the fixed seat 421 in a mirror symmetry manner, the active wedge 422 is inserted into the rectangular opening 432, and the inner surface of the fixed seat 421 is fixedly connected with the secondary cylinder 41; the driving wedge 421 is used to press the mating wedge 441 from the outside to the inside.
As an improvement of the above technical solution, the cam tightening mechanism 7 includes a locking column 71, an unlocking column 72, a pushing block 73 and a primary locking cylinder 74, the pushing block 73 is slidably mounted on the mounting bracket 5, one end of the pushing block 73 is connected to the primary locking cylinder 74, the locking column 71 is vertically arranged at the outer end of the top surface of the pushing block 73, the unlocking column 72 is vertically arranged at the middle part of the top surface of the pushing block 73, the locking column 71 is attached to one side of the connecting rod 293 away from the primary locking cylinder 74, the unlocking column 72 is relatively arranged at the outer side of the secondary positioning block 43, the locking column 71 is used for driving the outer cam 292 to rotate and lock, and the unlocking column 72 is used for driving the outer cam 292 to rotate and reset; when the pushing block 73 slides, the locking column 71 and the unlocking column 72 both move along, so that the cam connecting rod 29 is controlled, and automatic feeding and discharging can be realized.
As an improvement of the above technical solution, the feeding mechanism 1 includes a bin 11, a feeding cylinder 13, a feeding push block 14, a chute block 15, a partition 18, and an adjusting screw 19; the storage bin 11 is fixedly mounted on the sliding groove block 15, a storage hole is formed in the storage bin 11 and used for stacking parts, a partition plate 18 is slidably mounted in the storage hole, an adjusting screw 19 is connected to the side surface of the partition plate 18, the storage bin 11 extends outwards through the adjusting screw 19, and the partition plate 18 can be driven to slide in the storage hole by rotating the adjusting screw 19, so that the storage space in the storage hole is matched with the size of the parts, and the application range of the storage bin is wider; the material storage holes can realize that parts automatically fall one by one;
the middle part of the sliding groove block 15 is penetrated with the feeding push block 14 in a sliding manner, the feeding push block 14 penetrates through the bottom of the material storage hole, the outer end of the feeding push block 14 is connected with the feeding cylinder 13, and the feeding push block 14 is arranged opposite to the primary part storage area; each part can be automatically pushed out to the primary part storage area by the feeding push block 14.
As an improvement of the above technical solution, the turnover mechanism 3 includes a turnover cylinder 31, a rack 33, a gear 34, and a rotating shaft 35; the primary positioning block 27 is mounted on the outer wall of the rotating shaft 35, the rotating shaft 35 is mounted at the output end of the gear 34, the gear 34 is meshed with the rack 33, and the rack 33 is fixedly connected with the turnover cylinder 31; the gear 34 can be driven to rotate through the rack 33, and then the rotating shaft 35 rotates 180 degrees to turn over.
As an improvement of the above technical solution, the scrap removing mechanism 9 includes a scrap removing cylinder 91, an air blowing plate 92 and an air vent 93, the scrap removing cylinder 91 is mounted at the top of the turnover mechanism 3, the scrap removing cylinder 91 is fixedly connected with the air blowing plate 92, a plurality of air outlet holes are formed in the bottom surface of the air blowing plate 92, and the air vent 93 is arranged at the inlet of the air blowing plate 92; the scrap removing cylinder 91 can drive the blowing plate 92 to move to the machining plane, and the blowing plate 92 can blow the gas exhaust away scraps on the machining plane.
Referring to fig. 1, the invention comprises a feeding mechanism 1, a primary positioning mechanism 2, a turnover mechanism 3, a secondary positioning mechanism 4, a mounting bracket 5, a receiving box 6, a cam tightening mechanism 7, a discharging mechanism 8 and a scrap removing mechanism 9.
Referring to fig. 2, the feeding mechanism includes a bin 11, a part 12, a feeding cylinder 13, a feeding push block 14, a chute block 15, a feeding bracket 16, a guide rod 17, a partition 18, and an adjusting screw 19;
when the automatic feeding device works, a row of parts 12 are fully placed in the bin 11, the feeding cylinder 13 contracts to drive the feeding push block 14 to move leftwards, the part 12 at the bottom of the bin 11 falls into a sliding groove of the sliding groove block 15, then the feeding cylinder 13 pushes the feeding push block 14 to move rightwards, the parts in the sliding groove are pushed into a primary part storage area of the primary positioning mechanism 2, feeding is completed, and the feeding push block 14 moves linearly on the sliding groove block 18;
referring to fig. 3, the primary positioning mechanism 2 includes a fixed cylinder 21, an upper sliding groove block 22, a lower sliding groove block 22, a bracket 23, an upper cam follower 24, a lower cam follower 24, a transmission link 25, a pressing link 26, a primary positioning block 27, a primary locking block 28, and a cam link 29;
the cam locking mechanism 7 comprises a locking column 71, an unlocking column 72, a pushing block 73 and a primary locking air cylinder 74;
when the part 12 is pushed to the primary positioning block 27 of the primary positioning mechanism 2 by the feeding push block 14, the primary locking cylinder 74 contracts to drive the push block 73 to move leftwards, the locking column 71 on the push block 73 pushes the cam connecting rod 29 to rotate clockwise, the cam connecting rod 29 pushes the primary locking block 28 to clamp the part 12, and the push block 73 can move linearly in the push sliding groove 75;
the fixed cylinder 21 extends out to drive the upper and lower sliding groove blocks 22 on the bracket 23 to move, the upper and lower cam followers 24 in the upper and lower sliding groove blocks 22 move downwards to pull the transmission connecting rod 25 and the pressing connecting rod 26 to rotate, so that the pressing connecting rod 26 fixes the primary positioning block 27;
referring to fig. 4, the turnover mechanism includes a turnover cylinder 31, a turnover slider 32, a rack 33, a gear 34, a rotating shaft 35, and a bearing seat 36;
the primary positioning block 27 is connected with the rotating shaft 35 through a key groove, the rotating shaft 35 is installed in the bearing seat 36, the gear 34 is connected with the rotating shaft 35 through a key groove, the rack 33 is meshed with the gear 34, the overturning slide block 32 moves in the overturning chute 37 in parallel, and the overturning cylinder 31 is connected with the overturning slide block 32;
during overturning, the overturning cylinder 31 is pushed out, the overturning slide block 32 moves leftwards, the rack 33 fixed on the overturning slide block 32 moves leftwards, the gear 34 meshed with the rack 33 rotates clockwise, the primary positioning block 27 connected with the rotating shaft 35 is driven to overturn for 180 degrees, and the part 12 enters the secondary positioning block 43;
in the practice of the present invention, the catalyst is,
step 1, a fixed cylinder 21 extends out to drive an upper sliding groove block 22 and a lower sliding groove block 22 on a support 23 to move, an upper cam follower 24 and a lower cam follower 24 in the upper sliding groove block 21 and the lower sliding groove block 21 move downwards, a transmission connecting rod 25 and a pressing connecting rod 26 are pulled to rotate, and a primary positioning block 27 are fixed by the connecting rod 26;
step 2, feeding: stacking parts to be processed in storage holes in a storage bin 11 one by one, driving a feeding push block 14 to leave a primary storage area by a feeding air cylinder 13, enabling the feeding push block 14 not to support the storage holes from the bottom after being folded, enabling the part located at the bottommost end to fall into a chute in a chute block 15, driving the feeding push block 14 to move leftwards by the feeding air cylinder 13, pushing the falling parts along the chute by the feeding push block 14 and blocking the outlet of the storage holes again, and stopping after pushing the parts to the primary storage area by the feeding push block 14;
step 3, primary positioning and processing: then, the primary locking cylinder 74 moves outwards to drive the pushing block 72 to move leftwards, then the locking column 71 pushes the connecting rod 293 leftwards, the connecting rod 293 drives the outer cam 292 to rotate clockwise around the positioning column 291, the primary locking block 28 can be pressed inwards in the rotating process of the outer cam 292, when the outer cam 292 rotates to a specified locking position, the chuck self-locking structure in the outer cam 292 can be locked, the primary locking block 28 presses a part inwards, so that the part is clamped and fixed by the locking block 28 and the primary positioning block on the other side, and the feeding pushing block 14 is retracted;
then the fixed cylinder 21 extends out to drive the upper and lower sliding groove blocks 22 on the bracket 23 to move, the upper and lower cam followers 24 in the upper and lower sliding groove blocks 21 move downwards, the transmission connecting rod 25 and the pressing connecting rod 26 are pulled to rotate, the connecting rod 26 fixes the primary positioning block 27, the positioning of the part 12 and the fixing of the primary positioning block 27 are completed, a milling machine processing program is started, and the first surface of the part 12 is processed;
step 4, turning over: after the primary processing is finished, the feeding push block 14 is retracted, and the fixed cylinder 21 drives the two connecting rods 26 to rotate and retract; then, the overturning cylinder 31 drives the rack 33 to horizontally slide, the rack drives the gear 34 to rotate, the gear 34 drives the two primary positioning blocks 27 to simultaneously rotate 180 degrees leftwards through the rotating shaft 35, the primary positioning blocks 27 are arranged at the top of the secondary locking block 44 in parallel, the cam connecting rod 29 is arranged at the left side in a mirror symmetry manner, the connecting rod 293 is arranged at the left side of the unlocking column 72 in a fitting manner, the primary locking cylinder 74 drives the pushing block 73 to move leftwards again, the unlocking column 72 pushes the connecting rod 293 leftwards, so that the outer cam 292 rotates and resets clockwise, the outer cam 292 does not abut against the primary locking block 28 any more, the primary locking block 28 moves outwards and resets under the driving of a spring, and a part processed on the first side can lose external force and is inserted backwards into the secondary part storage area;
finally, the overturning cylinder 31 rotates reversely, so that the two primary positioning blocks 27 rotate rightwards for 180 degrees to reset, meanwhile, the primary locking cylinder 74 drives the pushing block 73 to move rightwards for resetting, and after the primary positioning blocks 27 reset, the feeding mechanism 1 can perform normal feeding;
step 5, secondary positioning and processing; the secondary positioning cylinder 41 drives the driving wedge 421 to pass through the rectangular hole 432 and the end part of the driving wedge 421 is inserted into the inverted T-shaped groove 431, and during the insertion process, the splayed inclined surface inside the driving wedge 421 is in inward interference fit with the splayed inclined surface of the wedge 441, so that the two secondary locking blocks 44 simultaneously slide inwards along the T-shaped groove 431, a part is clamped, and secondary positioning can be completed; then, processing a second surface of the part by a milling machine;
step 6, blanking and cleaning; the Z axis of the milling machine drives the discharging mechanism 8 to move to the top of the part, and a discharging upper and lower cylinder 82 in the discharging mechanism 8 drives a discharging clamping jaw 81 to move up and down to grab the part and then transfer the part to a material receiving box; the scrap air cylinder 81 extends out to move the air blowing plate 82 to the position above the primary positioning mechanism 2 and the secondary positioning mechanism 4, and a plurality of outlets on the air blowing plate 82 blow out compressed air to blow away scraps generated in machining.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. The utility model provides a but unloading mechanism in numerical control milling machine automation of turn-over which characterized in that: the automatic feeding device comprises a feeding mechanism, a primary positioning mechanism, a turnover mechanism, a secondary positioning mechanism, a mounting bracket, a material collecting box, a cam tightening mechanism, a discharging mechanism and a scrap removing mechanism;
the middle part of the top of the mounting bracket is provided with a turnover mechanism, the two transverse sides of the turnover mechanism are symmetrically provided with the primary positioning mechanism and the secondary positioning mechanism, the inlet end of the primary positioning mechanism is provided with a feeding mechanism, and the feeding mechanism is used for conveying an unprocessed part to the primary positioning mechanism; the primary positioning mechanism and the secondary positioning mechanism are used for clamping and fixing the parts; the turnover mechanism is used for driving the part to turn over;
the material collecting box and the scrap removing mechanism are symmetrically arranged on two longitudinal sides of the turnover mechanism, the scrap removing mechanism is used for blowing away scraps, and the material collecting box is used for collecting the machined parts; the cam tightening mechanism is arranged between the material collecting box and the turnover mechanism and used for controlling the opening and closing of the primary positioning mechanism and the secondary positioning mechanism; the top of the secondary positioning mechanism is provided with a discharging mechanism;
the primary positioning mechanism comprises a primary positioning block, a primary locking block and a connecting rod cam; the side surface of the output shaft of the turnover mechanism is vertically connected with two primary positioning blocks, the primary positioning blocks are arranged in a mirror symmetry mode, the area between the two primary positioning blocks is a primary part storage area, the primary part storage area is internally embedded with parts, the primary positioning block close to the material receiving box is an action positioning block, the top surface of the action positioning block is embedded with the primary locking block in a sliding way, the action positioning block is connected with the primary locking block through a spring telescopic structure, the primary locking block is used for clamping parts at one time, the outer side surface of the action positioning block is provided with a connecting rod cam, the convex part of the connecting rod cam is attached to the primary locking block, the connecting rod cam is used for inwards extruding the primary locking block, the connecting rod cam is connected with the cam tightening and loosening mechanism, and the cam tightening and loosening mechanism is used for driving the connecting rod cam to rotate.
2. The automatic loading and unloading mechanism of the reversible numerical control milling machine as claimed in claim 1, wherein: the connecting rod cam comprises a central column, an outer cam and a cam connecting rod, the central column is fixed on the outer wall of the primary locking block, the outer portion of the central column is rotatably connected with the outer cam, a self-locking structure is installed at the rotating connection position of the central column and the outer cam, and the cam connecting rod is arranged on the outer wall of the outer cam.
3. The automatic loading and unloading mechanism of the reversible numerical control milling machine as claimed in claim 2, wherein: the primary positioning mechanism also comprises a fixed cylinder, an upper sliding groove block, a lower sliding groove block, a bracket, an upper cam follower, a lower cam follower, a transmission connecting rod and a pressing connecting rod; the output end of the fixed cylinder is connected with the support, the support is connected with the upper and lower sliding groove blocks in a sliding mode, the upper and lower sliding groove blocks are connected with the upper and lower cam followers in an inner connection mode, the upper and lower cam followers are connected with the two transmission connecting rods in a rotating mode, the end portions of the transmission connecting rods are connected with the pressing connecting rods in a rotating mode, the upper and lower sliding groove blocks are used for driving the pressing connecting rods to move up and down, the outer end portion of the primary positioning block is provided with a locking groove, the pressing connecting rods are clamped on the locking groove, and the pressing connecting rods are used for pressing the primary positioning block downwards.
4. The automatic loading and unloading mechanism of the reversible numerical control milling machine as claimed in claim 3, wherein: the secondary positioning mechanism comprises a secondary cylinder, a secondary locking mechanism, a secondary positioning block and a secondary locking block, the secondary positioning block is fixed on the mounting support, the secondary locking block is slidably connected with the inside of the secondary positioning block in a mirror image mode and is arranged in a secondary locking block storage area, parts are embedded into the secondary part storage area, the secondary locking mechanism is inserted into the outer end of the secondary positioning block in a splicing mode, the secondary cylinder is connected to the outer end face of the secondary locking mechanism, and the secondary locking mechanism is used for driving the secondary locking block to be close to the secondary locking block.
5. The automatic loading and unloading mechanism of the reversible numerical control milling machine as claimed in claim 4, wherein: the outer end face of the secondary positioning block is provided with a rectangular opening, a T-shaped groove is formed in the secondary positioning block and communicated with the rectangular opening, a matched wedge block is arranged on the bottom face of the secondary locking block and is slidably embedded into the T-shaped groove through a spring telescopic structure, the secondary locking mechanism comprises a fixed seat and an active wedge block, the inner side face of the fixed seat is provided with the active wedge block in a mirror symmetry mode, the active wedge block is inserted into the rectangular opening, and the inner face of the fixed seat is fixedly connected with the secondary cylinder; the active wedge is used for extruding the matched wedge from outside to inside.
6. The automatic loading and unloading mechanism of the reversible numerical control milling machine as claimed in claim 5, wherein: the cam elastic mechanism comprises a locking column, an unlocking column, a pushing block and a locking cylinder, wherein the pushing block is slidably mounted on the mounting bracket, one end of the pushing block is connected with the locking cylinder, the outer end of the top surface of the pushing block is perpendicularly provided with the locking column, the middle of the top surface of the pushing block is perpendicularly provided with the unlocking column, the locking column is attached to the cam connecting rod and is far away from one side of the locking cylinder, the unlocking column is relatively arranged on the outer side of the secondary positioning block, the locking column is used for driving the outer cam to rotate and lock, and the unlocking column is used for driving the outer cam to rotate and reset.
7. The automatic feeding and discharging mechanism of the reversible numerical control milling machine as claimed in claim 6, wherein: the feeding mechanism comprises a bin, a feeding cylinder, a feeding push block, a sliding groove block, a partition plate and an adjusting screw; feed bin fixed mounting in on the spout piece, the storage hole has been seted up to the inside of feed bin, the storage hole is used for piling up the part, the inside slidable mounting of storage hole has the baffle, the side of baffle is connected with adjusting screw, the adjusting screw thread is overhanging the feed bin, the middle part of spout piece slides and runs through there is the material loading ejector pad, the material loading ejector pad passes the bottom of storage hole, the outer end of material loading ejector pad is connected the material loading cylinder, the material loading ejector pad with the relative setting in primary part storage area.
8. The automatic loading and unloading mechanism of the reversible numerical control milling machine as claimed in claim 1, wherein: the turnover mechanism comprises a turnover cylinder, a rack, a gear and a rotating shaft; the primary positioning block is arranged on the outer wall of the rotating shaft, the rotating shaft is arranged at the output end of the gear, the gear is meshed and connected with the rack, and the rack is fixedly connected with the overturning cylinder.
9. The automatic loading and unloading mechanism of the reversible numerical control milling machine as claimed in claim 1, wherein: the scrap removing mechanism comprises a scrap removing cylinder, an air blowing plate and an air vent, the scrap removing cylinder is installed at the top of the turnover mechanism and fixedly connected with the air blowing plate, a plurality of air outlet holes are formed in the bottom surface of the air blowing plate, and the air vent is arranged at the inlet of the air blowing plate.
CN202010138340.6A 2020-03-03 2020-03-03 Automatic unloading mechanism of going up of numerically controlled fraise machine that can turn over face Active CN111318914B (en)

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