CN212793009U

CN212793009U - Automatic needle threading and shaping device for porous MIM workpiece

Info

Publication number: CN212793009U
Application number: CN202021309004.5U
Authority: CN
Inventors: 浦剑; 罗兆飞
Original assignee: Qujing Zhongming Technology Co ltd
Current assignee: Qujing Zhongming Technology Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-03-26
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses an automatic threading needle shaping device of porous MIM work piece, including plastic base and last hold-down mechanism, be provided with cylinder base in one side of plastic base, elevating system is installed at cylinder base's top, the cylinder platform is installed at elevating system's top, the top slidable mounting of cylinder platform has the fixed plate, the fixed plate top is provided with the push pin cylinder, the blind plate is installed to the tailpiece of the piston rod portion of push pin cylinder, one side movable mounting of blind plate has the thimble, be provided with lubricating oil component between thimble and plastic base, be provided with the spout at the plastic base top that is close to thimble one side, slidable mounting has the locating template in the spout, it has the locating hole to process on the locating template, it has the work piece standing groove to process on the plastic base of last hold-down mechanism below, the equip. The device has the advantages of reasonable structural design, simple and convenient operation, strong practicability, high automation degree, high production efficiency and low production cost.

Description

Automatic needle threading and shaping device for porous MIM workpiece

Technical Field

The utility model belongs to the technical field of powder metallurgy production facility, concretely relates to automatic threading needle shaping device of porous MIM work piece.

Background

MIM, i.e., metal powder injection molding, is a new molding technique that has been rapidly developed internationally in recent years, and has advantages in that parts having complicated shapes can be molded, and the density of each part of the product is uniform without significant performance differences, and its general process flow is to uniformly mix fine metal powder and organic binder into a substance having rheological properties, then inject the substance into a mold cavity having a part shape using an advanced injection machine to form a blank, and then release the binder and sinter it to make it highly dense to become a metal product. With the development of the MIM technology, the porous MIM workpiece gradually becomes a main product for MIM production, and in the prior art, after the porous MIM workpiece is reamed, a round hole is usually shaped to ensure the roundness of the hole. At present, the round hole reshaping of a porous MIM workpiece is basically performed manually, namely, an ejector pin penetrates into each round hole, the MIM workpiece penetrated with the ejector pin is conveyed to a reshaping platform, and then the ejector pin is pushed by hand to perform needle pushing work after the MIM workpiece is compressed by an upper pressing mechanism, so that the round hole reshaping work is realized. Therefore, the research and development of the automatic needle threading and shaping device for the porous MIM workpiece, which has the advantages of reasonable structural design, simplicity and convenience in operation, strong practicability, high automation degree and high production efficiency and can effectively reduce the production cost, is objectively needed.

Disclosure of Invention

An object of the utility model is to provide an automatic threading needle shaping device of porous MIM work piece that structural design is reasonable, easy operation is convenient, the practicality is strong, degree of automation is high, production efficiency is high, and can effectively reduction in production cost.

The utility model aims at realizing the method, which comprises a shaping base and an upper pressing mechanism arranged on the shaping base, wherein one side of the shaping base is provided with a cylinder base, the top of the cylinder base is provided with a lifting mechanism, the top of the lifting mechanism is provided with a cylinder platform, the top of the cylinder platform is symmetrically processed with two slide rails, the slide rails are provided with pulleys in a sliding way, the pulleys are provided with a brake component, a fixed plate is arranged above the pulleys, the top of the fixed plate is horizontally provided with a push pin cylinder, the cylinder seat of the push pin cylinder is fixed on the fixed plate, the piston rod of the push pin cylinder is arranged in a suspension way, the end part of the piston rod of the push pin cylinder is provided with a blind plate, one side of the blind plate is movably provided with a needle seat, an internal thread shaft sleeve is horizontally arranged on the needle seat, a thimble is arranged in the internal thread, the sliding groove and the sliding rail are arranged in parallel, a positioning template is arranged in the sliding groove in a sliding mode, the lower portion of the positioning template in the sliding groove is fixed in the sliding groove through a limiting bolt, a positioning hole for the ejector pin to penetrate through is formed in the upper portion of the positioning template in a penetrating mode, a workpiece placing groove is machined in the shaping base below the upper pressing mechanism, and workpiece clamping assemblies are evenly distributed around the workpiece placing groove.

Further, the lubricating oil subassembly includes square, sponge cover and advances oil pipe, and the square passes through the link to be installed on the jar seat of push pin cylinder, and run through processing on the square and have the gliding guiding hole of confession thimble, and the sponge cover is installed in the guiding hole, and the inlet port with sponge cover intercommunication is installed at the top of square, advances oil pipe and inlet port intercommunication.

Further, the clearance between sponge cover and the thimble is 1 ~ 2 mm.

Further, elevating system includes upper junction plate and lower connecting plate, the upper junction plate is fixed in the bottom of cylinder platform, lower connecting plate fixed mounting is at the top of cylinder base, be provided with first connecting rod and the second connecting rod that is the cross arrangement between upper junction plate and the lower connecting plate, the upper end of first connecting rod and second connecting rod is articulated with the upper junction plate respectively, the lower extreme is articulated with lower connecting plate respectively, the intersection of first connecting rod and second connecting rod is provided with the articulated shaft, two otic placodes are worn to be equipped with in the activity of the both ends of articulated shaft, be provided with the minor axis between two otic placodes, the cover is equipped with the sleeve pipe on the minor axis, the vertical lift cylinder that is provided with on the cylinder base, the jar seat of lift cylinder is fixed on the cylinder base, the.

Further, the workpiece clamping assembly comprises an electric push rod and a clamping plate, the electric push rod is fixed in the workpiece placing groove, and the clamping plate is installed at the end portion of the electric push rod.

The beneficial effect that this device produced is: firstly, the needle inserting and pushing work of the thimble is realized by arranging the needle pushing cylinder, on one hand, the labor intensity is reduced, the investment of labor cost is reduced, on the other hand, the production efficiency is greatly improved, on the other hand, the lifting mechanism is used for driving the needle pushing cylinder to ascend or descend, the applicability of the device is further improved, the lifting mechanism is matched with a positioning template for use, the positioning template can play a role in guiding and positioning the thimble, the thimble can be ensured to smoothly and accurately penetrate into a circular hole of the MIM, and the condition that the thimble deviates in the needle penetrating and withdrawing processes is avoided; the lubricating oil component can lubricate the ejector pin, and compared with a spraying type structure, the lubricating oil component is arranged between the ejector pin and the positioning template, so that on one hand, the workpiece can be prevented from being polluted by the lubricating oil, on the other hand, the lubricating oil can be saved, and the waste of the lubricating oil can be avoided; and fourthly, the sliding rail and the pulley mechanism are arranged, the cylinder platform can slide on the cylinder base in a reciprocating mode, the positioning template can slide in the sliding groove, the arrangement structure can meet the requirement for round hole shape correction of porous MIM workpieces in different shapes, and the arrangement structure is good in applicability. Compared with the prior art, the device has the advantages of reasonable structural design, simple and convenient operation, strong practicability, high automation degree, high production efficiency and production cost, and is easy to popularize and use.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a schematic view of a lubricating oil assembly;

FIG. 4 is a side view of the lift mechanism;

in the figure: 1-cylinder base, 2-lifting cylinder, 3-upper connecting plate, 4-first connecting rod, 5-lower connecting plate, 6-cylinder platform, 7-sliding rail, 8-pulley, 9-fixing plate, 10-push pin cylinder, 11-blind plate, 12-needle seat, 13-square, 131-oil inlet pipe, 14-ejector pin, 15-positioning template, 16-upper pressing mechanism, 17-workpiece placing groove, 18-sliding groove, 19-limiting bolt, 20-shaping base, 21-connecting frame, 22-internal thread shaft sleeve, 23-second connecting rod, 24-sponge sleeve, 25-workpiece clamping component, 26-guide hole, 27-lug plate, 28-sleeve, 29-articulated shaft and 30-short shaft.

Detailed Description

The following further describes the present invention with reference to the attached drawings, but the present invention is not limited in any way, and any changes or improvements based on the teaching of the present invention all belong to the protection scope of the present invention.

As shown in fig. 1-4, the utility model comprises a shaping base 20 and an upper pressing mechanism 16 installed on the shaping base 20, wherein the upper pressing mechanism 16 adopts the structure of the existing shaping mechanism and is used for pressing the surface of an MIM workpiece, a cylinder base 1 is arranged on one side of the shaping base 20, a lifting mechanism is installed on the top of the cylinder base 1, a cylinder platform 6 is installed on the top of the lifting mechanism, two slide rails 7 are symmetrically processed on the top of the cylinder platform 6, a pulley 8 is slidably installed on the slide rails 7, a brake component is installed on the pulley 8, the arranged slide rails 7 and the pulley 8 mechanism can realize the reciprocating sliding of the cylinder platform 6 on the cylinder base 1, a fixing plate 9 is installed above the pulley 8, a push pin cylinder 10 is horizontally arranged on the top of the fixing plate 9, the push pin cylinder 10 is the prior art, and finished products are directly purchased, the needle inserting and pushing work of the ejector pin 14 is realized by arranging the ejector pin cylinder 10, on one hand, the labor intensity is reduced, the labor cost investment is reduced, on the other hand, the production efficiency is greatly improved, the cylinder seat of the ejector pin cylinder 10 is fixed on the fixing plate 9, the piston rod of the ejector pin cylinder 10 is arranged in a suspended manner, the end part of the piston rod of the ejector pin cylinder 10 is provided with the blind plate 11, one side of the blind plate 11 is movably provided with the needle seat 12, the needle seat 12 is horizontally provided with the internal thread shaft sleeve 22, the ejector pin 14 is arranged in the internal thread shaft sleeve 22 in an threaded manner, the ejector pin 14 is arranged on the blind plate 11 through the internal thread shaft sleeve 22, so that the ejector pin 14 can be conveniently replaced to meet the orthopedic requirements of round holes with different specifications, a lubricating oil component is arranged between the ejector pin 14 and the shaping base 20, the arranged lubricating oil component can perform oil lubrication on the ejector, compared with a spray type structure, the spray type structure can prevent lubricating oil from polluting workpieces on one hand, can save the lubricating oil and avoid the waste of the lubricating oil on the other hand, a sliding groove 18 is arranged at the top of the shaping base 20 close to one side of the thimble 14, the sliding groove 18 is arranged in parallel with the sliding rail 7, a positioning template 15 is arranged in the sliding groove 18 in a sliding way, the lower part of the positioning template 15 positioned in the sliding groove 18 is fixed in the sliding groove 18 through a limiting bolt 19, the upper part of the positioning template 15 is provided with a positioning hole for the thimble 14 to pass through, the positioning template 15 can realize sliding in the chute 18, the arrangement structure can meet the requirement of round hole orthopedic work of porous MIM workpieces with different shapes, the shaping base 20 below the upper pressing mechanism 16 is provided with the workpiece placing grooves 17, and the workpiece clamping assemblies 25 are uniformly distributed around the workpiece placing grooves 17.

The working process of the device is as follows: firstly, an MIM workpiece needing to be shaped is placed in a workpiece placing groove 17, then a workpiece clamping component 25 is used for clamping the porous MIM workpiece in the workpiece placing groove 17, meanwhile, an upper clamping mechanism 16 is controlled to move downwards to clamp and fix the upper surface of the MIM workpiece, then a lifting mechanism is used for controlling a push pin cylinder 10 to ascend or descend, so that the height of a push pin 14 on the push pin cylinder 10 is consistent with that of a positioning hole on a positioning template 15, then the push pin cylinder 10 is controlled to work, the push pin cylinder 10 drives a push pin 14 to move towards the direction of the MIM workpiece, when the push pin moves into a lubricating oil component, the lubricating oil component carries out oil lubrication on the push pin 14, then the push pin 14 continuously penetrates through the positioning hole of the positioning template 15 under the pushing action of the push pin cylinder 10 and then penetrates into a round hole of the MIM workpiece, under the pushing action of the push pin cylinder 10, the push pin 14 moves in, the round hole reshaping can be realized, after the ejector pin 14 penetrates through the round hole of the MIM workpiece, the reshaping operation is completed, the ejector pin cylinder 10 is controlled to reset, the ejector pin cylinder 10 drives the ejector pin 14 to retreat, the ejector pin 14 is withdrawn from the round hole of the MIM workpiece, the positioning hole of the positioning template 15 and the lubricating oil component in sequence and then restores to the original position, at the moment, the upper pressing mechanism 16 and the workpiece clamping component 25 are controlled to restore to the original position, the workpiece is not clamped, and the workpiece can be taken out of the workpiece placing groove 17.

Further, the lubricating oil assembly comprises a block 13, a sponge sleeve 24 and an oil inlet pipe 131, the block 13 is mounted on the cylinder base of the ejector pin cylinder 10 through a connecting frame 21, a guide hole 26 for the ejector pin 14 to slide is processed on the block 13, the sponge sleeve 24 is arranged in the guide hole 26, the top of the square 13 is provided with an oil inlet hole communicated with the sponge sleeve 24, the oil inlet pipe 131 is communicated with the oil inlet hole, when in use, the oil inlet pipe 131 is communicated with the lubricating oil storage tank, the oil inlet valve is arranged on the oil inlet pipe 131, after the oil inlet valve is opened, the lubricating oil in the lubricating oil storage tank enters the oil inlet hole through the oil inlet pipe 131, then the sponge sleeve 24 is fully washed and absorbed with the lubricating oil, the thimble 14 is in the process of threading or pushing the thimble, the sponge sleeve 24 can infiltrate oil into the thimble 14, and preferably, a gap between the sponge sleeve 24 and the thimble 14 is 1-2 mm.

Further, in order to ensure the supporting stability of the push pin cylinder 10, the lifting mechanism includes an upper connecting plate 3 and a lower connecting plate 5, the upper connecting plate 3 is fixed at the bottom of the cylinder platform 6, the lower connecting plate 5 is fixedly installed at the top of the cylinder base 1, a first connecting rod 4 and a second connecting rod 23 which are arranged in a cross manner are arranged between the upper connecting plate 3 and the lower connecting plate 5, the upper ends of the first connecting rod 4 and the second connecting rod 23 are respectively hinged with the upper connecting plate 3, the lower ends of the first connecting rod 4 and the second connecting rod 23 are respectively hinged with the lower connecting plate 5, a hinge shaft 29 is arranged at the intersection of the first connecting rod 4 and the second connecting rod 23, two lug plates 27 are movably arranged at two ends of the hinge shaft 29 in a penetrating manner, a short shaft 30 is arranged between the two lug plates 27, a sleeve 28 is sleeved on the short shaft 30, a lifting cylinder 2 is vertically arranged on, the piston rod of the lifting cylinder 2 is fixedly connected with the sleeve 28, when the push pin cylinder 10 needs to be lifted, the piston rod of the lifting cylinder 2 is controlled to extend to drive the first connecting rod 4 and the second connecting rod 23 to rotate around the hinge shaft 29, the included angle between the first connecting rod 4 and the second connecting rod 23 is gradually reduced, the cylinder platform 6 is gradually lifted, otherwise, when the height of the push pin cylinder 10 needs to be lowered, the piston rod of the lifting cylinder 2 is controlled to be shortened, the cylinder platform 6 can be lowered, the lifting mechanism with the structure is easy to implement, has strong supporting capability, and can ensure the operation stability of the push pin cylinder 10,

further, the workpiece clamping assembly 25 comprises an electric push rod and a clamping plate, the shape of the clamping plate is matched with that of the MIM workpiece, the electric push rod is fixed in the workpiece placing groove 17, and the clamping plate is installed at the end of the electric push rod.

Claims

1. An automatic needle threading shaping device for a porous MIM workpiece comprises a shaping base (20) and an upper pressing mechanism (16) arranged on the shaping base (20), and is characterized in that: the device is characterized in that a cylinder base (1) is arranged on one side of a shaping base (20), a lifting mechanism is installed at the top of the cylinder base (1), a cylinder platform (6) is installed at the top of the lifting mechanism, two sliding rails (7) are symmetrically processed at the top of the cylinder platform (6), a pulley (8) is installed on each sliding rail (7) in a sliding mode, a brake assembly is installed on each pulley (8), a fixing plate (9) is installed above each pulley (8), a push pin cylinder (10) is horizontally arranged at the top of each fixing plate (9), a cylinder base of each push pin cylinder (10) is fixed on each fixing plate (9), a piston rod of each push pin cylinder (10) is arranged in a suspending mode, a blind plate (11) is installed at the end portion of the piston rod of each push pin cylinder (10), a pin base (12) is movably installed on one side of each blind plate (11), and an internal thread shaft sleeve (22, the novel thimble structure is characterized in that an ejector pin (14) is installed in the internal thread shaft sleeve (22) in a threaded manner, a lubricating oil assembly is arranged between the ejector pin (14) and the shaping base (20), a sliding groove (18) is formed in the top of the shaping base (20) close to one side of the ejector pin (14), the sliding groove (18) and the sliding rail (7) are arranged in parallel, a positioning template (15) is installed in the sliding groove (18) in a sliding manner, the lower portion of the positioning template (15) located in the sliding groove (18) is fixed in the sliding groove (18) through a limiting bolt (19), a positioning hole for the ejector pin (14) to penetrate through is formed in the upper portion of the positioning template (15) in a penetrating manner, a workpiece placing groove (17) is machined in the shaping base (20) below the upper pressing mechanism (16), and workpiece clamping assemblies (.

2. The automated pin punch reshaping apparatus of a porous MIM workpiece of claim 1, wherein: the lubricating oil assembly comprises a square block (13), a sponge sleeve (24) and an oil inlet pipe (131), wherein the square block (13) is installed on a cylinder seat of a push pin cylinder (10) through a connecting frame (21), a guide hole (26) for a push pin (14) to slide is formed in the square block (13) in a penetrating mode, the sponge sleeve (24) is installed in the guide hole (26), the oil inlet hole communicated with the sponge sleeve (24) is installed at the top of the square block (13), and the oil inlet pipe (131) is communicated with the oil inlet hole.

3. The automated pin punch reshaping apparatus of a porous MIM workpiece of claim 2, wherein: the clearance between the sponge sleeve (24) and the thimble (14) is 1-2 mm.

4. The automated pin punch reshaping apparatus of a porous MIM workpiece of claim 1, wherein: the lifting mechanism comprises an upper connecting plate (3) and a lower connecting plate (5), the upper connecting plate (3) is fixed at the bottom of the cylinder platform (6), the lower connecting plate (5) is fixedly installed at the top of the cylinder base (1), a first connecting rod (4) and a second connecting rod (23) which are arranged in a cross mode are arranged between the upper connecting plate (3) and the lower connecting plate (5), the upper ends of the first connecting rod (4) and the second connecting rod (23) are respectively hinged with the upper connecting plate (3), the lower ends of the first connecting rod (4) and the second connecting rod (23) are respectively hinged with the lower connecting plate (5), a hinge shaft (29) is arranged at the crossing position of the first connecting rod (4) and the second connecting rod (23), two lug plates (27) are movably arranged at the two ends of the hinge shaft (29), a short shaft (30) is arranged between the two lug plates (27), a sleeve (28) is sleeved on the short shaft (30), a, the cylinder base of the lifting cylinder (2) is fixed on the cylinder base (1), and a piston rod of the lifting cylinder (2) is fixedly connected with the sleeve (28).

5. The automated pin punch reshaping apparatus of a porous MIM workpiece of claim 1, wherein: the workpiece clamping assembly (25) comprises an electric push rod and a clamping plate, the electric push rod is fixed in the workpiece placing groove (17), and the clamping plate is installed at the end part of the electric push rod.