CN109664544A - A kind of automatic pressure setting of powder material - Google Patents
A kind of automatic pressure setting of powder material Download PDFInfo
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- CN109664544A CN109664544A CN201811357104.2A CN201811357104A CN109664544A CN 109664544 A CN109664544 A CN 109664544A CN 201811357104 A CN201811357104 A CN 201811357104A CN 109664544 A CN109664544 A CN 109664544A
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- die cavity
- automatic
- cope plate
- platform
- pushing tow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
- B30B11/04—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with a fixed mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
- B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/32—Discharging presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The present invention relates to the automatic pressure settings of powder material, including forming die, successively set compacting platform, middle template and lower template from high to low.Middle template is fixed on bracket, and lower template is connected with compacting platform with the pull rod for passing through middle template, and lower template is driven by the first pushing tow cylinder and gone up and down to link and suppress the relatively middle template of platform.Die cavity is set on compacting platform, middle template top corresponds to die cavity and sets stamping.It suppresses platform and is equipped with cope plate, cope plate lower part corresponds to die cavity and sets upper punch.Cope plate is driven by the second pushing tow cylinder and opposite platform of suppressing is gone up and down.Rectilinear orbit is set on compacting platform, track is equipped with sliding block, installs automatic member withdrawing device on sliding block, and it includes clamping limb and third pushing tow cylinder, third pushing tow cylinder drives clamping limb to draw close to die cavity to clamp and demould by molded part.Sliding block is driven, and can be reciprocatingly slided along rectilinear orbit.Automatic part picking can be achieved in the present invention, reduces labor intensity, improves production automation degree and stable product quality.
Description
Technical field
The present invention relates to the compression moulding technique of powder material more particularly to a kind of automatic pressure settings of powder material.
Background technique
Existing powder material pressure setting mainly includes compacting platform (compacting platform is equipped at least one die cavity), upper mold
Punching, bottom punch, hydraulic gear, limiting device and timer.If the moulding process of friction plate or friction block includes step:
1. material feeding: using manual type, powder material needed for first weighing one piece of friction block, it is suitable to calculate according to the apparent density of powder
Mold cavity volume, the position for adjusting bottom punch makes die cavity meet the volume, then inserts the friction block powder weighed up in die cavity；
Suitable transition zone powder is inserted in die cavity again, then places friction block metal backing in the top of powder；2. compacting: setting
Level pressure pressing pressure, the parameters such as dwell time execute pressing process；3. demoulding: after pressure maintaining, upper punch automated backhaul passes through
Lowering compacting platform manually makes green compact expose die cavity, then manually takes out green compact, realizes the pressing process of a friction block.By
It is smaller in monolithic friction block, multiple die cavitys generally are designed in a compacting platform, multiple friction blocks can be suppressed simultaneously.
The moulding process of above-mentioned powder material has the following disadvantages:
1. the prior art is using transition zone connection type needs, friction material powder (is first inserted mould by artificial cloth twice
It is intracavitary, then transition zone powder is inserted in die cavity), large labor intensity, human cost height；2. material such as weighs, loads at the backmans
Make that the time is longer, and production efficiency is low；3. material conveying or filling during, due in powder each component because of specific gravity/particle size
It differs larger, easily causes component segregation, be unfavorable for the consistency of each site component in molding blank, influence finally sintering and be made
The quality and performance of product；4. the mechanical strength of green compact is lower, compacting after the completion of again using be manually demolded, pickup be easy green compact is made
At damage, and then influence final performance.In addition, prior art human factor is more, it is easy to cause different batches of product individual difference
Different larger, in same batch unstable product quality.
Summary of the invention
In order to solve the above problem of the prior art, the present invention provides a kind of automatic pressure setting of powder material, the dress
Automatic member withdrawing device and/or automatic feeding device have been installed, it, can be by the automatic member withdrawing device and/or automatic feeding device
Every time complete a compression moulding after, carry out mechanization automatic part picking and auto feed operation, reduce labor intensity and
Human cost improves the degree of automation of production, reduces the accounting of human factor, thus improve product large-scale production efficiency and
Quality stability.
In order to achieve the above object, the main technical schemes that the present invention uses include:
A kind of automatic pressure setting of powder material, comprising:
Forming die, it includes compacting platform, middle template and lower template, the both ends of the middle template to be fixed on bottom bracket
On, the compacting platform and the lower template are divided into above and below the middle template, and the compacting platform and lower die
Frame is connected with pull rod, and the pull rod passes through the middle template but do not fix with the middle template；In the middle template and lower die
First pushing tow cylinder is installed, the both ends of first pushing tow cylinder are separately connected the middle template and lower template between plate；By
The elongation of first pushing tow cylinder and retraction enable the relatively described linear oscilaltion of middle template of the compacting platform；
The compacting platform is equipped at least one die cavity, and the die cavity runs through the compacting platform, and the middle template corresponds to the die cavity
Equipped with bottom punch, the bottom punch is equipped with the section to match with the die cavity；
It is described compacting platform top be equipped with cope plate, the cope plate correspond to the die cavity be equipped with upper punch, it is described on
Stamping is equipped with the section to match with the die cavity, and the cope plate is driven by the second pushing tow cylinder, by second pushing tow
The elongation of cylinder and retraction enable the cope plate linear oscilaltion of the compacting platform relatively；
The compacting platform is equipped with rectilinear orbit, and the rectilinear orbit is equipped at least one can be with respect to the rectilinear orbit
The sliding block of sliding, automatic member withdrawing device is equipped on the sliding block, and the automatic member withdrawing device includes clamping limb and third pushing tow
Cylinder, the end of the clamping limb are connected with spill pickup block；The clamping limb is driven by the third pushing tow cylinder, makes the folder
Gripping arm to die cavity close to or far from；The sliding block is driven by a horizontal drive apparatus, and the horizontal drive apparatus is set to described
The side of rectilinear orbit drives the sliding block to slide along the rectilinear orbit by the horizontal drive apparatus.
Preferably, the horizontal drive apparatus is the telescopic cylinder or the water for being fixed on described compacting platform one end
Flat driving device includes the combination unit of motor, gear and tooth band.
Preferably, the die cavity be in be cylindrical cavity, the upper punch and bottom punch are and the die cavity diametric fit
Cylindrical structure.In other embodiments, the die cavity is other any rules or irregular cylinder cavitys, and upper punch and
Bottom punch is equipped with and the matched column structure of the die cavity.
In a preferred embodiment of the present invention, the rectilinear orbit is a pair, is divided into the two sides of the die cavity, described
Clamping limb is a pair, is respectively arranged on this on rectilinear orbit.Since die cavity is cylinder, then spill pickup block is preferably set as circular arc
Shape mouth makes a pair of of spill pickup block that can just be clamped in the two sides of cylindrical rolled-up stock, realizes firm clamping.Preferably, described recessed
Shape pickup block outer surface is equipped with one layer of cushion rubber layer or the spill pickup block is made of rubber material.
In a preferred embodiment of the present invention, be further fitted with automatic feeding device on the sliding block, it is described from
Dynamic feeding device includes precompressed charging bucket precompressed charging bucket, and the precompressed charging bucket includes that a both ends are opening ladle bowl, the bucket
The internal diameter of shell is less than die cavity internal diameter；It is equipped with above the ladle bowl and the matched pressing plate in ladle bowl inner cavity, pressing plate bottom surface center tool
There is a newel, the pressing plate controls it by a pre- air cylinder and moves up and down；The ladle bowl bottom is equipped with a bottom plate, institute
It states bottom plate to be opened when bearing and being more than certain pressure threshold value, makes powder in the ladle bowl by pre-extrusion at column, from institute
It states ladle bowl bottom to leak out and fall into the die cavity, the pressure threshold is the 5%~10% of pressing pressure.
The bottom plate is equipped with pressure sensor and backplane drive device, and the backplane drive device can be lesser flexible
Cylinder.Bottom plate includes two pieces, is symmetrically engaged, and will be closed below ladle bowl, when blank reaches the pressure of the bottom plate in ladle bowl
When to certain preset value, the bottom plate at left and right sides of this is separated to both sides, which is opened, is made by the pillared powder of precompressed
It is leaked out from the ladle bowl bottom.In order to adapt to the shape (molding blank center will form through-hole) of die cavity H, in pressing plate center bottom surface
Equipped with newel.
It in a preferred embodiment of the present invention, further comprise feeding device, the feeding device is to described automatic
Feeding device carries out quantitative feeding；The feeding device includes volumetric feed pipe, and the volumetric feed pipe is vertically arranged including one
Storage tube cell, end opening is correspondingly connected with filler bin thereon, and lower ending opening connects the precompressed charging bucket by feeding screw；
Pneumatic butterfly valve and lower Pneumatic butterfly valve are respectively equipped at the storage tube cell both ends open, the screw pitch of the feeding screw is 0.5cm
~5cm.Height between the pipe diameter size of the storage tube cell and upper and lower Pneumatic butterfly valve, can be according to the shaping block institute of wanted compression moulding
The powder needed carries out adaptability replacement, to realize constant volume feeding.
In a preferred embodiment of the present invention, the feeding device further includes automatic weighing device, described automatic
Weighing device includes inlet port and outlet port, and the feed inlet of the automatic weighing device is correspondingly arranged at the lower end of the storage tube cell, is discharged
Mouth is correspondingly connected with the upper end of the precompressed charging bucket.The automatic weighing device has the devices such as display screen or language count off, when described fixed
Hold powder that feeder sleeve comes out obviously insufficient deal or when the obvious excess of deal, proposed issuing, for staff make it is suitable
When adjusting and calibration.
Wherein, the upper and lower ends of the volumetric feed pipe pass through fast quick access with the filler bin and automatic weighing device respectively
Head connection, and the quick coupling includes to be flexible coupling, as rubber neck connects.
In a preferred embodiment of the present invention, it is further fitted with mold releasing agent spraying device on the sliding block, and made
The automatic member withdrawing device is between the automatic feeding device and the mold releasing agent spraying device；The wherein release agent spray
Coating device includes the downward spray head and hose for spraying release agent, and the spray head is fixedly connected on the sliding block by linking arm, described
Hose one end connects the spray head, and the other end connects release agent storage tank.
In a preferred embodiment of the present invention, demoulding is equipped between second pushing tow cylinder and the cope plate
Protective device, the demolding protection device are a middle cylinders, the cylinder body of the middle cylinders and second pushing tow cylinder
Piston rod connection, the piston rod of the middle cylinders connect with the cope plate.
In a preferred embodiment of the present invention, upper limit is equipped between the cope plate and the compacting platform to fill
It sets, the position limit device includes the buffer limit cylinder for being set to cope plate and leaning on proximal edge, and the buffer limit cylinder includes
Cylinder body, piston rod and adjusting bolt, cylinder body are mounted on cope plate, and the lower thread connection of piston rod adjusts bolt.According to
Cope plate and compacting platform spacing specific needs adjust the lower end of the adjusting bolt to the distance of the cope plate, to reach limit
Position purpose.
In a preferred embodiment of the present invention, lower limit is equipped between the compacting platform and the middle template to fill
It sets comprising the cylinder body of the lateral Displacement cylinder being horizontally arranged in the middle template, the lateral Displacement cylinder is fixed on institute
It states in template, the piston rod end of the lateral Displacement cylinder connects position limiting slide block, the bottom surface installation of the compacting platform
Limited block corresponding with the position limiting slide block.
In a preferred embodiment of the present invention, be fixed with guide post on the compacting platform, the cope plate be equipped with
The guide tube of the guide post cooperation, is slidably matched by the guide tube with guide post, flat relative to the compacting to guide the cope plate
Platform vertically moves, and to prevent upper punch from deviateing die cavity, upper punch or die cavity is caused to damage.
The beneficial effects of the present invention are:
The automatic pressure setting of powder material of the invention includes automatic member withdrawing device, realizes that automation is taken compacting away and completed
Product, prevent manpower from causing the broken damage of powder compacting product when moving pickup because of misoperation.
The automatic pressure setting of powder material of the invention further includes automatic feeding device and feeding device, it can be achieved that automatic
Powder is added to die cavity quantification, meets the needs of multi-layer powder is injected in batches, reduces human cost, improves powder additional amount
It accurately controls, and improves production automation degree and production efficiency, reduce the ratio manually participated in, human factor is avoided to cause to add
The problems such as material is inaccurate, pickup damages, improves yields, the quality stability of product is effectively ensured.
The present invention can carry out precompressed to powder before being added to die cavity H in precompressed charging bucket, by precompressed by each group split-phase
To being fixed up, prevents in powder each component to cause component segregation due to specific gravity/particle size difference is larger, be conducive to be pressed into
The consistency of each site component in parison body improves the quality and performance of final sintering manufactured goods.
Detailed description of the invention
Fig. 1 is the overall schematic of the automatic pressure setting of the powder material of the specific embodiment of the invention.
Fig. 2 is in the automatic pressure setting of the powder material of the specific embodiment of the invention comprising cope plate and compacting platform
Schematic top plan view.
Fig. 3 is the schematic diagram of automatic feeding device in the automatic pressure setting of the powder material of the specific embodiment of the invention.
Fig. 4 is the signal of mold releasing agent spraying device in the automatic pressure setting of the powder material of the specific embodiment of the invention
Figure.
Fig. 5 is the feeding device schematic diagram of the automatic pressure setting of the powder material of the specific embodiment of the invention.
Specific embodiment
In order to preferably explain the present invention, in order to understand, with reference to the accompanying drawing, by specific embodiment, to this hair
It is bright to be described in detail.
It is shown in Figure 1, it is the overall schematic of the automatic pressure setting of the powder material of the embodiment of the present invention, including at
Pattern frame 20.Wherein, forming die 20 includes compacting platform 21, middle template 22 and lower template 23.The both ends of middle template 22 are fixed
On bottom bracket 40 (bottom bracket 40 is securable to ground or other working reference planes), suppresses platform 21 and lower template 23 sets up separately
Above and below middle template 22 and the two is fixedly connected by pull rod L1, and pull rod L1 passes through the through-hole and not in middle template 22
It is fixedly connected with middle template 22.First pushing tow cylinder 24 is installed between middle template 22 and lower template 23.First pushing tow cylinder 24
Both ends be separately connected middle template 22 and lower template 23, therefore, can elongation by the first pushing tow cylinder 24 and retraction, and cooperate
The guide function of pull rod L1 enables to suppress the linear oscilaltion of middle template 22 relatively of platform 21.Compacting platform 21 is equipped with
At least one die cavity H, die cavity H are through the hole of compacting platform 21, and in the present embodiment, H is cylindrical hole.Wherein, in
The corresponding die cavity H of template 22 is equipped with bottom punch 221, and bottom punch 221 is equipped with the section to match with die cavity H.
Cope plate 30 is equipped with above compacting platform 21.Cope plate 30 can form assembled relation with forming die 20, or
Cope plate 30 is opposite 20 separate type stand-alone assembly of forming die.30 bottom surface of cope plate is equipped with the upper punch 31 of corresponding die cavity H,
The section (identical as the section of bottom punch 221) that the upper punch 31 is equipped with and die cavity H matches.Second is equipped on cope plate 30
Pushing tow cylinder 34 drives, and extends the linear motion with retraction by the second pushing tow cylinder 34, enables cope plate 30 is opposite to suppress
The linear oscilaltion of platform 21.Preferably, in the present embodiment, it suppresses on platform 21 and is fixed with guide post 211, cope plate 30 is set
There is the guide tube 301 cooperated with guide post 211 further to guide cope plate by the effect of being slidably matched of guide tube 301 and guide post 211
30 relative to this, compacting platform 21 is perpendicular moves up and down, and to prevent upper punch 31 from deviating from die cavity H, and causes upper punch 31 disconnected
It splits, the impaired adverse consequences of die cavity H.
In conjunction with shown in FIG. 1 to FIG. 2, compacting platform 21 is equipped with rectilinear orbit R1 and R2, and rectilinear orbit R1, R2 are parallel and right
The two sides for claiming ground to be set to die cavity H.Rectilinear orbit R1 and/or R2 are equipped at least one sliding block, as shown in Fig. 2, in the present embodiment
The quantity of sliding block is 4,2 first the second sliding blocks of sliding block 51 and 1 52 and 1 third sliding block 53.In other embodiments, sliding
The quantity of block is 2 or more, the quantity of corresponding each automatic member withdrawing device, automatic feeding device and mold releasing agent spraying device,
Sliding block is respectively set.The first sliding block 51 on the first sliding block 51 and R2 of R1 is separately connected a clamping limb 61, each clamping limb
61 end is respectively connected with spill pickup block 611.Wherein, each clamping limb 61 is driven by third pushing tow cylinder 64；Specifically, it clamps
Arm 61 is set as the piston rod of third pushing tow cylinder 64 or linearly connect with piston rod.The third pushing tow cylinder 64, clamping limb
61 and its end spill pickup block 611 constitute automatic member withdrawing device 60.It suppresses and completes when the powder pressing forming part in die cavity H
Afterwards, the compacting platform 21 moves down, and molded part is exposed, and the first sliding block 51 on the rectilinear orbit R1 and R2 of the left and right sides moves at this time
Move the position of face die cavity H, third pushing tow cylinder 61 extends, and two clamping limbs 61 are close to molded part from two sides and will be at
The clamping of type part, with the movement of the first sliding block 51, powder pressing forming part is removed, achievees the purpose that automatic part picking.
In conjunction with shown in Fig. 2, the first sliding block 51, the second sliding block 52 and third sliding block 53 etc. are by a horizontal drive apparatus 50
(horizontal drive apparatus 50 of the side track R1 is not drawn) is driven, which is set to the side of rectilinear orbit R1 or R2,
To drive the first, second, third sliding block 51,52,53 to reciprocatingly slide along rectilinear orbit R1 or R2.Horizontal drive apparatus 50 can be solid
It is scheduled on the telescopic cylinder of compacting 21 one end of platform, or to contain the combination unit of motor, gear and tooth band.In the present embodiment reality
It applies as latter approach, while each first, second, third sliding block 51,52,53 is equipped with the rack gear engaged with tooth band.Its middle concave
Pickup block 611 is open equipped with arc line shaped, to match with the cross sectional shape of press-formed part, realizes firm clamping pickup movement,
Prevent loss press-formed part.Preferably, 611 outer surface of spill pickup block is equipped with one layer of cushion rubber layer or entirety uses rubber
Glue material matter is made, and pressed ware will not be damaged by being further ensured that when pickup.Wherein, automatic member withdrawing device 60 can also clamp one piece
The metal backing for suppressing friction block, puts it into die cavity H, therefore automatic member withdrawing device 60 also has the function of charging.In addition,
Automatic member withdrawing device 60 described in also in addition being arranged again one group, or a machinery along rectilinear orbit R1 or R2 sliding is separately provided
Hand, for grabbing the metal backing etc., to replace manually adding the operation of the metal backing.
It is shown in Figure 1, it is equipped with demolding protection device 35 between the second pushing tow cylinder 34 and cope plate 30, is among one
Cylinder, the cylinder body of middle cylinders are connect with the piston rod of the second pushing tow cylinder 34, and the piston rod of middle cylinders and cope plate 30
Connection.Middle cylinders play the role of demoulding pressure maintaining.
Further, it is equipped with position limit device between cope plate 30 and compacting platform 21, cope plate is close it includes being set to
The buffer limit cylinder 321 at edge, buffer limit cylinder 321 is including cylinder body 3211, piston rod 3212 and adjusts bolt 3213,
Cylinder body 3211 is mounted on cope plate 30, and the lower thread connection of piston rod 3212 adjusts bolt 3213.According to cope plate and pressure
Platform spacing specific needs processed adjust the lower end of the adjusting bolt 3213 to the distance of cope plate 30, to reach limiting distance
Purpose.
Further, it suppresses and is equipped with lower caging device 223 between platform 21 and middle template 22 comprising in being horizontally arranged at
Lateral Displacement cylinder in template 22, the cylinder body 2231 of lateral Displacement cylinder are fixed in middle template 22, lateral Displacement cylinder
2232 end of piston rod connects position limiting slide block A, and the bottom surface of compacting platform 21 installs limited block B corresponding with position limiting slide block A, with
Achieve the purpose that limiting distance.Position limiting slide block A can be replaced according to actual needs.
In addition, position detecting device can be set between platform 21 and middle template 22 by suppressing between cope plate 30 and compacting platform 21
Or proximity sensor, such as infrared distance measuring sensor (not shown), to help staff to grasp upper punch 31, bottom punch
221 with the relative position of die cavity H, in order to by the practical compacting volume adjustment of die cavity H to loose according to the requirement of compacting product and powder
Bulk density and calculated mold cavity volume.
In conjunction with shown in Fig. 2 and Fig. 3, it is further fitted with automatic feeding device 70 on the second sliding block 52, with the second sliding block
52 are fixedly connected by bracket 71.Automatic feeding device 70 includes precompressed charging bucket 72, and the precompressed charging bucket 72 includes one
Both ends are opening ladle bowl, and the internal diameter of the ladle bowl is less than the internal diameter of die cavity H.It is equipped with and the matched pressure in ladle bowl inner cavity above the ladle bowl
Plate 721, the pressing plate bottom surface center have a newel 722, and pressing plate controls it by a pre- air cylinder 723 and moves up and down.
Ladle bowl bottom is equipped with a bottom plate 724, and bottom plate is opened when bearing and being more than certain pressure threshold value, keeps the powder in ladle bowl pre-
It is squeezed into column and is leaked out from ladle bowl bottom, fallen into die cavity H.In a powder pressing forming part compacting completion and molded part
After being removed, when need to feed compacting to carry out next molded part to die cavity H, the second sliding block 52 is in horizontal drive apparatus 50
Driving is moved to the position being aligned with model H, and the bottom of precompressed charging bucket 72 is aligned die cavity H and carries out material feeding at this time.It is logical
It crosses powder pre-extrusion in precompressed charging bucket 72 into bulk, avoids during falling into die cavity H, because of heterogeneity in powder
Cause obviously to be layered because specific gravity and partial size great disparity are larger, and be layered the component segregation that will cause in the green body suppressed everywhere,
The serious consequences such as the manufactured goods performance difference being finally sintered.
Preferably, bottom plate 724 is equipped with pressure sensor (not shown) and backplane drive device 725.Backplane drive dress
Setting 725 can be lesser telescopic cylinder.Bottom plate includes two pieces, is symmetrically engaged, and will be closed below ladle bowl, when base in ladle bowl
When material reaches certain preset value to the pressure of the bottom plate 724, the bottom plate at left and right sides of this is separated to both sides, which is beaten
It opens, makes to be leaked out by the pillared powder of precompressed from the ladle bowl bottom.In order to adapt to the structure of die cavity H (due in final product
Between to have through-hole, thus corresponding construction need to be arranged in die cavity H or bottom punch 221), be equipped with newel in the central bottom surface of pressing plate 721
722, the outer diameter of newel 722 should be greater than the outer diameter of die cavity H internal model column, in order to which the powder of pre-molding can accurately fall into mould
Appropriate location in chamber H.
As shown in connection with fig. 5, it feeds for further accurate quantitative analysis, the invention also includes feeding device 80, is used for automatic
Feeding device 70 carries out quantitative feeding.Feeding device 80 includes volumetric feed pipe 81 and automatic weighing device 82.Volumetric feed pipe 81
Including a vertically disposed storage tube cell 811, end opening is correspondingly connected with the filler bin 83 of large capacity thereon, and lower ending opening is corresponding to be connected
Connect automatic weighing device 82.It is respectively equipped with Pneumatic butterfly valve 811A and lower Pneumatic butterfly valve 811B at 811 both ends open of storage tube cell, two
A Pneumatic butterfly valve is opened in volumetric feed for staggeredly interval one time rotation overturning.In actual production, the storage tube cell 811
Pipe diameter size and upper and lower Pneumatic butterfly valve between height, the time interval of two Pneumatic butterfly valves overturning, according to being pressed into
Powder needed for the shaping block of type carries out adaptability replacement and control, to realize constant volume feeding.Upper Pneumatic butterfly valve 811A and lower gas
Dynamic butterfly valve 811B is driven by minitype cylinder realize overturning respectively, and minitype cylinder connects gas station, this part is the prior art, herein not
It repeats.
Wherein, the feed inlet of automatic weighing device 82 is correspondingly arranged at the lower end of the storage tube cell 811,82 discharge port of automatic weighing device
It is correspondingly connected with the one end of the precompressed charging bucket 72 in contrast to the discharge port 721.Automatic weighing device 82 shows the display of weighing result
The devices such as screen or language count off, whether the weight for examining the volumetric feed pipe 81 to convey is accurate, when discovery powder amount is obvious
When in shortage or obvious excess, corresponding prompt will be issued, for making regulation and control appropriate.82 bottom of automatic weighing device
Electronic scale with weight sensor, and its container bottom for accommodating material has the controllable valve closed.Wherein, constant volume supplies
The upper and lower ends of expects pipe 81 are connect with filler bin 83 and automatic weighing device 82 by quick coupling respectively.
It wherein, is the jacking load for reducing compacting platform 21, the feeding device 80 can be set to compacting 21 side of platform
On bracket 84, bracket 84 is set independently of compacting platform 21, as mountable on the ground on 20 side of forming die, and is claimed automatically
82 bottom of instrument is measured by connecting precompressed charging bucket 72 by feeding screw.It is come out to reduce powder from automatic weighing device 82,
During being transported to precompressed charging bucket 72, because in powder heterogeneity because specific gravity and partial size great disparity it is larger due to cause ingredient inclined
Analysis, present invention preferably employs feeding screw conveyings, and the screw pitch of feeding screw is preferably 0.5cm~5cm, closeer screw pitch
The component segregation of powder can be reduced.The powder that need to be transported in precompressed charging bucket 72 will be measured by feeding screw to cut
It is conveyed at the form differentiation of multistage, reduces the bubble or air section in delivery pipe inside powder, alleviate the component segregation of powder
Phenomenon is conducive to the homogeneity for improving each position powder component of green body of compression moulding.
In some embodiments, filler bin 83 suspends with being reciprocally moveable by truss, and constant volume feeder sleeve 81, from
Dynamic weighing device 82 is connected to 83 lower section of filler bin in turn from top to bottom, 82 bottom of automatic weighing device it is very smooth by inner wall and
The biggish connecting tube of tilt angle connects precompressed charging bucket 72.Preferably, filler bin 83 can be carried out as the second sliding block 52 is synchronous
It moves back and forth.
Referring to fig. 2 and shown in Fig. 4, mold releasing agent spraying device 90 is installed on third sliding block 53, as shown in Fig. 2, in the past
Automatic feeding device 70, automatic member withdrawing device 60 and mold releasing agent spraying device 90 are followed successively by after.Mold releasing agent spraying device 90 wraps
The spray head 91 and hose 92 for spraying release agent downwards are included, spray head 91 is fixedly connected on the second sliding block 52, hose by linking arm 911
92 one end connect the spray head 91, and the other end connects release agent storage tank.Spray head 91 can be formed release agent by spraying, after being pressed into
Spray release agent in powder rolled-up stock surface.The effect of release agent is that cured product is promoted successfully to isolate from die cavity H
Come, to obtain smooth product.
It should be noted that the bracket 71 of the second sliding block 52 of linking arm 911 and connection of connection third sliding block 53 can be set
It is set to and telescopic cylinder, while linking arm 911 can be used for support and the cabling of hose 92.
The production technology of powder pressing forming, including following technique are carried out with the automatic pressure setting of above-mentioned powder material
Step:
(1) it adjusts die cavity: according to the specification of the friction block to be suppressed and powder loose density, calculating the reality of die cavity H
Working volume makes the first pushing tow cylinder 24 carry out opposite position of the bottom punch 221 in lift adjustment in template 22 with respect to die cavity H
It sets, and mobile up to predetermined position.
(2) material feeding: larger amount of friction block powder and transition zone powder are respectively charged into the filler bin 83 of large capacity,
Quantitative friction block powder and transition zone powder are weighed into two precompressed charging buckets 72 by automatic weighing device 82 respectively, pass through water
Flat driving device 50 drives two precompressed charging buckets 72 successively to move to above die cavity H, and discharging cylinder 723 opens stripper 722, makes
It obtains friction block powder and transition zone powder is implanted sequentially in die cavity H, then one piece of metal backing is clamped by automatic member withdrawing device 60, put
The powder top in die cavity H is set, material feeding is completed.
(3) suppress: after the completion of material feeding movement, by position detecting device or proximity sensor, upper and lower limiting device 32,
223 detect the relative position of upper and lower stamping 31,221 and die cavity H, and suitable opposite position is reached under the second pushing tow cylinder 34
It sets, then cope plate 30 is driven by the second pushing tow cylinder 34, molding guarantor is carried out to the powder material in die cavity H using upper punch 31
Pressure reaches the dwell pressure of setting and after the dwell time, starts automatic demoulding.
(4) demould: after pressure maintaining, demolding protection device 35 continues to be pressed on cope plate 30, and then die cavity H is on the first top
Under push cylinder 24 acts on, rolled-up stock exposing die cavity H, 31 automated backhaul of upper punch, and then by the clamping limb of automatic member withdrawing device 60
Rolled-up stock is clamped removal by 61.
(5) release agent is sprayed: de- to spraying in die cavity H by the spray head 91 of mold releasing agent spraying device 90 after the completion of pickup
Mould agent.
The automatic pressure setting of powder material of the invention can be used for making friction for the compression moulding of powder material
Block has and substantially reduces human cost, improves product yield, improves product quality stability and improve the technology effect of production efficiency
Fruit.
Claims (10)
1. a kind of automatic pressure setting of powder material characterized by comprising
Forming die, it includes compacting platform, middle template and lower template, the both ends of the middle template to be fixed on bottom bracket,
The compacting platform and the lower template are divided into above and below the middle template, and the compacting platform and lower mold holder with
Pull rod is connected, and the pull rod passes through the middle template but do not fix with the middle template；Between the middle template and lower template
First pushing tow cylinder is installed, the both ends of first pushing tow cylinder are separately connected the middle template and lower template；By described
The elongation of first pushing tow cylinder and retraction enable the relatively described linear oscilaltion of middle template of the compacting platform；It is described
It suppresses platform and is equipped at least one die cavity, the die cavity runs through the compacting platform, and the middle template corresponds to the die cavity and is equipped with
Bottom punch, the bottom punch are equipped with the section to match with the die cavity；
The top of the compacting platform is equipped with cope plate, and the cope plate corresponds to the die cavity equipped with upper punch, the upper punch
Equipped with the section to match with the die cavity, the cope plate is driven by the second pushing tow cylinder, by second pushing tow cylinder
Elongation and retraction, enable the cope plate linear oscilaltion of the compacting platform relatively；
The compacting platform is equipped with rectilinear orbit, and the rectilinear orbit is equipped at least one and can slide with respect to the rectilinear orbit
Sliding block, automatic member withdrawing device is installed on the sliding block, the automatic member withdrawing device includes clamping limb and third pushing tow cylinder,
The end of the clamping limb is connected with spill pickup block；The clamping limb is driven by the third pushing tow cylinder, makes the clamping limb
To die cavity close to or far from；The sliding block is driven by a horizontal drive apparatus, and the horizontal drive apparatus is set to the straight line
The side of track drives the sliding block to slide along the rectilinear orbit by the horizontal drive apparatus.
2. the automatic pressure setting of powder material according to claim 1, which is characterized in that the rectilinear orbit is one
It is right, the two sides of the die cavity are divided into, the clamping limb is a pair, is respectively arranged on this on rectilinear orbit.
3. the automatic pressure setting of powder material according to claim 2, which is characterized in that the spill pickup block is preferable
It is set as arc-shaped mouth, makes a pair of of spill pickup block that can just be clamped in the two sides of cylindrical rolled-up stock, realizes firm clamping.
4. the automatic pressure setting of powder material according to claim 1, which is characterized in that further pacify on the sliding block
Equipped with automatic feeding device, the automatic feeding device includes precompressed charging bucket, and the precompressed charging bucket includes that a both ends are
Be open ladle bowl, and the internal diameter of the ladle bowl is less than die cavity internal diameter；It is equipped with and the matched pressing plate in ladle bowl inner cavity, the pressing plate above the ladle bowl
Bottom surface center has a newel, and the pressing plate controls it by a pre- air cylinder and moves up and down；The ladle bowl bottom is set
There is a bottom plate, the bottom plate is opened when bearing and being more than certain pressure threshold value, makes the powder in the ladle bowl by pre-extrusion
Leak out and fall into the die cavity from the ladle bowl bottom at column, the pressure threshold be pressing pressure 5%~
10%.
5. the automatic pressure setting of powder material according to claim 1, which is characterized in that further comprise feed dress
It sets, the feeding device carries out quantitative feeding to the automatic feeding device；The feeding device includes volumetric feed pipe, described
Volumetric feed pipe includes a vertically disposed storage tube cell, and end opening is correspondingly connected with filler bin thereon, and lower ending opening passes through spiral
Feed appliance connects the precompressed charging bucket；Pneumatic butterfly valve and lower Pneumatic butterfly valve, institute are respectively equipped at the storage tube cell both ends open
The screw pitch for stating feeding screw is 0.5cm~5cm.
6. the automatic pressure setting of powder material according to claim 5, which is characterized in that the feeding device is further
Comprising automatic weighing device, the automatic weighing device includes inlet port and outlet port, and the feed inlet correspondence of the automatic weighing device is set
In the lower end of the storage tube cell, discharge port is correspondingly connected with the upper end of the precompressed charging bucket.
7. the automatic pressure setting of powder material according to claim 1, which is characterized in that further pacify on the sliding block
Equipped with mold releasing agent spraying device, and the automatic member withdrawing device is made to be located at the automatic feeding device and release agent spraying dress
Between setting；Wherein the mold releasing agent spraying device includes the downward spray head for spraying release agent, and the spray head is fixed by linking arm
It is connected to the sliding block.
8. the automatic pressure setting of powder material according to claim 1, which is characterized in that in second pushing tow cylinder
Demolding protection device is equipped between the cope plate, the demolding protection device is a middle cylinders, the middle cylinders
Cylinder body connect with the piston rod of second pushing tow cylinder, the piston rod of the middle cylinders is connect with the cope plate.
9. the automatic pressure setting of powder material according to claim 1, which is characterized in that the cope plate and the pressure
Position limit device is equipped between platform processed, the position limit device includes the buffer limit cylinder for being set to cope plate and leaning on proximal edge,
The buffer limit cylinder includes cylinder body, piston rod and adjusts bolt, and cylinder body is mounted on cope plate, the lower end of piston rod
It is threadedly coupled and adjusts bolt.
10. the automatic pressure setting of powder material according to claim 1, which is characterized in that solid on the compacting platform
Surely there is guide post, the cope plate is equipped with the guide tube cooperated with the guide post, is slidably matched by the guide tube with guide post, with guiding
The cope plate is vertically moved relative to the compacting platform.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811357104.2A CN109664544B (en) | 2018-11-15 | 2018-11-15 | Automatic pressing device for powder materials |
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|---|---|---|---|
| CN201811357104.2A CN109664544B (en) | 2018-11-15 | 2018-11-15 | Automatic pressing device for powder materials |
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| CN109664544B CN109664544B (en) | 2020-07-10 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667167A (en) * | 2019-08-20 | 2020-01-10 | 中国船舶重工集团公司第七一八研究所 | Chemical oxygen generator medicine block forming device |
| CN110696424A (en) * | 2019-10-30 | 2020-01-17 | 佛山市第一人民医院（中山大学附属佛山医院） | Tabletting mechanism and tablet machine thereof |
| CN112372920A (en) * | 2020-11-18 | 2021-02-19 | 济南悦创液压机械制造有限公司 | Be applied to feeding device of brake block production |
| CN112757685A (en) * | 2020-12-29 | 2021-05-07 | 南安市铭基金刚石工具有限公司 | Automatic cold press for producing rope saw bead strings and control method thereof |
| CN112980529A (en) * | 2021-02-04 | 2021-06-18 | 重庆科技学院 | System for be used for metallurgical lump coke of coke powder preparation |
| CN113022000A (en) * | 2021-03-02 | 2021-06-25 | 中国科学院过程工程研究所 | Automatic mixing and tabletting device, tabletting method and application thereof |
| CN113182516A (en) * | 2021-04-06 | 2021-07-30 | 山东金麒麟股份有限公司 | Feeding and forming system and forming method for powder metallurgy friction block |
| CN118528595A (en) * | 2024-07-24 | 2024-08-23 | 四川致研科技有限公司 | Catalyst compression molding device |
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| CN112757685A (en) * | 2020-12-29 | 2021-05-07 | 南安市铭基金刚石工具有限公司 | Automatic cold press for producing rope saw bead strings and control method thereof |
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| CN112980529A (en) * | 2021-02-04 | 2021-06-18 | 重庆科技学院 | System for be used for metallurgical lump coke of coke powder preparation |
| CN113022000A (en) * | 2021-03-02 | 2021-06-25 | 中国科学院过程工程研究所 | Automatic mixing and tabletting device, tabletting method and application thereof |
| CN113182516A (en) * | 2021-04-06 | 2021-07-30 | 山东金麒麟股份有限公司 | Feeding and forming system and forming method for powder metallurgy friction block |
| CN118528595A (en) * | 2024-07-24 | 2024-08-23 | 四川致研科技有限公司 | Catalyst compression molding device |
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