CN213135041U - Pressing device and production system of friction structure - Google Patents
Pressing device and production system of friction structure Download PDFInfo
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- CN213135041U CN213135041U CN202021937279.3U CN202021937279U CN213135041U CN 213135041 U CN213135041 U CN 213135041U CN 202021937279 U CN202021937279 U CN 202021937279U CN 213135041 U CN213135041 U CN 213135041U
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Abstract
The utility model discloses a pressing device and a production system of a friction structure, wherein the pressing device comprises a first die with a first die cavity and a second die with a second die cavity which are arranged on a frame; the pick and place mechanism is reciprocally movable between the first mold cavity and the second mold cavity. The production system of the friction structure includes a pressing device. The pressing device with the structure is provided with a first die cavity and a second die cavity, and the mixture is pre-pressed and formed in the first die cavity to form a pre-pressing body of a friction body; the steel back is pre-arranged in the second die cavity; taking out the pre-pressing body in the first die cavity by the taking and placing mechanism, transferring the pre-pressing body into a second die cavity and stacking the pre-pressing body on the steel backing; and pressing the steel back and the pre-pressing body so as to form a whole body, and then putting the whole body into sintering equipment for sintering and molding, wherein no relative displacement difference exists between the steel back and the friction body, the rejection rate of the friction body is reduced, and the yield of the friction body is improved.
Description
Technical Field
The utility model relates to a processing technology field of work piece, concretely relates to suppression device and friction structure's production system.
Background
At present, the powder metallurgy brake pad mainly comprises an iron-based friction material and a copper-based friction material, and the main production process comprises mixing, pressing and sintering. The pressing is to put the mixture into a pressing die and apply a certain pressure to extrude the powder into a blank with a certain shape and size. In the production process of the friction material, the compression molding of the friction material is a main production process.
The friction structure of the powder metallurgy brake pad mainly comprises a friction body and a steel back, wherein the friction body is formed by pressing a mixed material in a die cavity on a pressing device, then the friction body is placed on the steel back, and the friction body and the steel back are sintered and formed together in a sintering furnace.
The pressing device and the sintering device in the prior art are separately arranged, and friction blocks pressed by the pressing device are usually taken out of the pressing device by manual operation of a person, then the friction blocks are manually placed on a steel back, and the friction blocks and the steel back are manually conveyed into sintering equipment. In the process of conveying the friction body and the steel back to the sintering equipment manually by a hand, if the hand shakes, the friction body and the steel back are easily caused to be not corresponding in placement position, the friction body and the steel back have displacement difference, relative displacement is caused between the steel back and the friction body in the sintering process, the friction body is scrapped, and the yield of the friction body is low.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to solve the technical problem that current suppression device presses out the friction piece earlier, and the friction piece is placed on the steel backing and is carried to sintering equipment in-process through manual mode, arouses easily that there is relative displacement between friction piece and the steel backing, finally arouses the condemned defect of friction piece.
To this end, the utility model provides a pressing device, include
At least one first die and at least one second die arranged on the frame; the first mold and the second mold are respectively provided with a first mold cavity and a second mold cavity;
the first pressing plate and the second pressing plate are respectively arranged in a one-to-one correspondence manner to the first opening of the first mold cavity and the second opening of the second mold cavity; the first pressing plate and the second pressing plate are respectively driven by respective first driving mechanisms and can be pressed in or separated from respective corresponding openings of the die cavities;
and the taking and placing mechanism is arranged on the frame and can reciprocate between the first die cavity and the second die cavity.
Optionally, in the pressing apparatus described above, the first mold and/or the second mold includes an annular seat fixed on the frame, and a base driven by the second driving mechanism and vertically and sealably slidably disposed in the annular seat; a mold cavity is formed between the top surface of the base and the inner wall of the annular seat.
Optionally, in the pressing device described above, the first mold and/or the second mold further include columns corresponding to the bases one to one;
the upright post is fixed on the frame and a hollow inner cavity is formed in the upright post; the annular seat is fixed on the top of the upright post; the second driving mechanism is arranged in the hollow inner cavity.
Optionally, in the pressing device, the second driving mechanism comprises
The screw rod extends vertically and is fixed on the rack;
the transition piece is in threaded fit with the screw rod;
the output rotating shaft of the first driver is connected with the bottom of the screw rod;
the transition piece is connected with the base.
Optionally, in the pressing apparatus described above, the second mold cavity includes a first portion located below and a second portion located above;
the shape of the first part is matched with that of the steel backing; the second portion has an outer shape matching the outer shape of the first mold cavity.
Optionally, in the pressing apparatus described above, there are at least two first molds and/or at least two second molds, all the first molds are distributed on the same row of the frame, and all the second molds are distributed on the same row of the frame; and the first die and the second die are arranged in parallel on the frame.
Optionally, in the pressing device described above, the pick-and-place mechanism includes a first mechanical arm, and a clamping cylinder fixed on the first mechanical arm;
the clamping cylinder is driven by the mechanical arm to reciprocate between the first die cavity and the second die cavity.
Optionally, the pressing device further comprises at least one feeding mechanism; and a transfer mechanism arranged on the frame;
the feeding mechanism is provided with a discharging rail;
the transfer mechanism is used for transferring the workpiece from the discharging rail to the first die cavity.
Optionally, in the above pressing device, the feeding mechanism further includes a spiral feeding vibration tray, and the discharge rail is communicated with an outlet of the feeding vibration tray;
the transfer mechanism comprises a sucker and negative pressure equipment for providing suction force for the sucker; and the second mechanical arm drives the sucker to move between the discharge rail and the first die cavity.
The utility model provides a production system of friction structure, include
The pressing apparatus of any one of the above.
Optionally, the above production system of friction structure further comprises
The sintering device is provided with a sintering cavity.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a pressing device, which comprises at least one first mould and at least one second mould arranged on a frame; the device comprises a first pressing plate, a second pressing plate and a taking and placing mechanism. Wherein the first and second molds have first and second mold cavities, respectively; the first pressing plate and the second pressing plate are respectively arranged in a one-to-one correspondence manner to the first opening of the first mold cavity and the second opening of the second mold cavity; the first pressing plate and the second pressing plate are respectively driven by respective first driving mechanisms and can be pressed in or separated from respective corresponding openings of the die cavities; the pick-and-place mechanism is fixedly arranged relative to the base and can reciprocate between the first die cavity and the second die cavity.
According to the pressing device with the structure, the first die cavity and the second die cavity are arranged, the mixture is filled in the first die cavity, the first pressing plate is pressed on the first opening of the first die cavity, and the mixture is subjected to pre-pressing forming to form a pre-pressing body of the friction body; the steel back is pre-arranged in the second die cavity; taking out the pre-pressing body in the first die cavity by the taking and placing mechanism, transferring the pre-pressing body into a second die cavity and stacking the pre-pressing body on the steel backing; and pressing the steel back and the pre-pressing body by adopting a second pressing plate on the second opening in a pressing manner, so that the steel back and the friction body form a whole, and then putting the whole into sintering equipment for sintering and forming, so that no relative displacement exists between the steel back and the friction body, the scrappage of the friction body is reduced, and the yield of the friction body is improved.
2. The utility model provides a pressing device, the first mould and/or the second mould comprise an annular seat fixed on the frame and a base which is driven by the second driving mechanism and is arranged in the annular seat in a sliding way along the vertical direction in a sealing way; a mold cavity is formed between the top surface of the base and the inner wall of the annular seat. After the pre-pressing body is formed in the first die cavity, the pre-pressing body can be ejected out of the top of the annular seat only by the vertical ascending motion of the base, so that the pre-pressing body can be taken away from the first die cavity by the taking and placing mechanism conveniently, and the pre-pressing body is transferred to the upper part of the second die cavity by the taking and placing mechanism; and the base corresponding to the second die cavity performs ascending motion to bear the pre-pressing body, and then performs descending motion, so that the taking and placing device is completed.
3. The utility model provides a production system of friction structure, including foretell suppression device to the yields of the friction structure that makes this production system prepare is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a first mold and a second driving mechanism provided in embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the structural arrangement of a pressing apparatus provided in example 1 of the present invention;
FIG. 3 is a schematic view (in top view) of a feeding mechanism and a transfer mechanism in a press apparatus;
description of reference numerals:
1-a first mold; 11-a base; 12-an annular seat; 2-a second mold; 31-a screw rod; 32-a transition piece; 33-a first driver; 34-upright column; 41-feeding vibration disc; 42-a discharge rail; 51-a suction cup; 6-a frame; 7-a pick and place mechanism; 5-transfer mechanism.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a pressing apparatus, as shown in fig. 1 to 3, including a frame 6, at least one first mold 1, at least one second mold 2, a first pressing plate (not shown), a second pressing plate (not shown), and a pick-and-place mechanism 7.
The first die 1 and the second die 2 are both arranged on the frame 6, and the first die 1 and the second die 2 are respectively provided with a first die cavity and a second die cavity; the first pressing plate and the second pressing plate are respectively arranged corresponding to the first opening of the first die cavity and the second opening of the second die cavity one by one; the first pressing plate and the second pressing plate are driven by the first driving mechanism respectively and can be pressed on or separated from the opening of the corresponding mold cavity respectively.
For example, the first die cavity and the second die cavity are both arranged below, the first pressing plate and the second pressing plate are respectively arranged right above the first die cavity and the second die cavity, the first driving mechanism drives the pressing plates to move towards the openings of the respective corresponding die cavities, pressure is continuously applied to the respective corresponding die cavities, and mixed materials or two workpieces in the die cavities are pressed together. The first driving mechanism can be an air cylinder or a hydraulic cylinder, and the pressure exerted by the pressure plate is adjusted by changing the air pressure of the air cylinder or the hydraulic pressure of the hydraulic cylinder.
The structure of the first mold 1 is the same as that of the second mold 2, and now the structure of the first mold 1 is taken as an example for description, as shown in fig. 1, the first mold 1 includes an annular seat 12 fixed on the frame, and a base 11 driven by the second driving mechanism and vertically and sealably slidably disposed in the annular seat 12; a first mould cavity is formed between the top surface of the base 11 and the inner wall of the annular seat 12.
When the pre-pressing body of the friction body is pressed in the first die cavity, the mixture is firstly loaded into the first die cavity, the first driving mechanism drives the first pressing plate to press the mixture on the first opening of the first die cavity, and after the mixture is pressed for a period of time, the mixture forms the pre-pressing body of the friction body with the shape consistent with that of the first die cavity; the first pressing plate begins to be separated from the first opening, and the second driving mechanism drives the base 11 to move upwards; so as to eject the pre-pressing body out of the inner cavity of the annular seat 12, thereby facilitating the taking and placing mechanism to take the pre-pressing body away.
Most preferably, the second mold cavity comprises a first portion below and a second portion above; the shape of the first part is matched with the shape of the steel backing; the shape of the second part is matched with the shape of the first die cavity, namely the shape of the prepressing body of the friction body, so that after the steel back and the prepressing body are placed into the second die cavity, the second die cavity can carry out more accurate alignment on the stacking position of the steel back and the friction body. The shape of the friction body is generally consistent with that of the steel back. Of course, may not be uniform.
As for the second driving mechanism, as shown in fig. 1, the second driving mechanism includes a screw 31, a transition piece 32, and a first driver 33. Wherein, the screw rod 31 extends vertically and is fixed on the frame; the transition piece 32 is in threaded fit on the screw rod 31; the output rotating shaft of the first driver is connected with the bottom of the screw rod 31 to form a screw rod structure, and the transition piece 32 is connected with the base 11. The first driver is a rotary motor, and the transition piece 32 can be driven by the rotation of the motor to drive the base 11 to do lifting motion. For example, the transition piece is L-shaped, the horizontal part of the L-shaped is matched with the screw rod, and the vertical part of the L-shaped is fixedly connected with the base. Or, as a modification, the second driving mechanism may also be an air cylinder or a hydraulic cylinder, and the telescopic shaft of the air cylinder or the hydraulic cylinder is directly connected with the base 11.
As for the first mold 1, as shown in fig. 1, it further includes columns 34 corresponding to the bases 11 one to one; the upright column 34 is fixed on the frame; the inside of the upright post is a hollow inner cavity; the annular seat 12 is fixed on the top of the upright post; the second driving mechanism is arranged in the hollow inner cavity, so that the first die 1 is compact in structure and small in occupied space.
As shown in fig. 2, the number of the first molds 1 is plural, the plural first molds 1 are distributed in the same row, the number of the second molds 2 is plural, the plural second molds 2 are distributed in the same row, and the first molds 1 and the second molds 2 are distributed in different rows. For example, three first molds 1 and three second molds 2 are provided, and the three first molds 1 are respectively pre-pressed with pre-pressing bodies for forming friction bodies; and then, placing the three pre-pressing bodies in the second die cavity respectively in a one-to-one correspondence manner through a taking and placing mechanism, and pressing the three pre-pressing bodies with the steel backing. Of course, three first press plates can be combined into one press plate, and one press plate synchronously presses the prepressing body of the friction bodies in the plurality of first die cavities at one time; likewise, the second press plate is combined into one press plate, and the press plate synchronously presses a plurality of pre-pressing bodies and the steel backing at one time, so that the working efficiency is further improved.
Pick and place mechanism 7 is provided on the frame, preferably between the first and second mold cavities, the second mold cavity being closer to a transfer mechanism (mentioned below) reciprocally movable between the first and second mold cavities for transferring a pre-compact of friction bodies pressed in the first mold cavity into the second mold cavity.
Optionally, the pick-and-place mechanism includes a first mechanical arm, and a clamping cylinder fixed on the first mechanical arm, and the clamping cylinder is driven by the mechanical arm to reciprocate between the first mold cavity and the second mold cavity. That is, the pick and place mechanism is the first robot arm, and preferably, further includes a controller electrically connected to the first robot arm, the controller controlling a stroke of the first robot arm to accurately place the pre-press body on the top surface of the steel back in the second mold cavity, further ensuring accurate alignment between the steel back and the friction body.
The first mechanical arm can move in a three-dimensional space, after the pre-pressing body is clamped by the clamping cylinder from the first die cavity, the pre-pressing body is accurately placed on the top surface of the steel back in the second die cavity under the movement of the mechanical arm, the steel back and the friction body are accurately aligned, then the steel back and the friction body are pressed to form a whole through pressing of the second pressing plate, and then the whole is conveyed to sintering equipment, so that relative displacement does not exist between the friction body and the steel back, the yield of the friction body is improved, and the yield of brake pads formed by the friction body and the steel back is improved.
As shown in fig. 2 and 3, the pressing device further comprises at least one feeding mechanism and a transfer mechanism 5 arranged on the frame; the feeding mechanism is provided with a discharging track 42; the transfer mechanism is used to transfer the workpiece from the outfeed rail 42 into the second die cavity. And under the cooperation of the transfer mechanism and the feeding device, the steel back is automatically conveyed into the second die cavity.
Optionally, the feeding mechanism is further provided with a spiral feeding vibration disc 41, and the discharging track 42 is communicated with an outlet of the feeding vibration disc 41; the steel back is placed in the middle cavity of the vibration disc 41, and under the vibration of the vibration disc 41, the steel back is continuously conveyed along the spiral conveying track from inside to outside until the steel back is conveyed to the outlet of the discharging track 42.
The transfer mechanism 5 comprises a suction cup 51 and a negative pressure device for providing suction force for the suction cup 51; and a second robotic arm that drives the suction cup 51 between the outfeed track 42 and the second mold cavity. Under the drive of the second mechanical arm, the suction cup 51 is close to the outlet of the discharging rail 42, the negative pressure device is opened, the suction hole on the suction cup 51 forms a negative pressure environment, and under the action of negative pressure, the suction cup 51 sucks the steel back, takes the steel back away from the feeding mechanism, and transfers the steel back into the second die cavity. Or as a variant, the transfer mechanism is also a third robot.
Most preferably, the feeding mechanisms are multiple, such as two, and are distributed side by side; the sucking disc 51 sucks the steel backs at the outlets of the discharging rails 42 of the two feeding mechanisms at one time, and the two steel backs are transferred into a second die cavity at one time, so that the automatic feeding efficiency is improved while the automatic feeding is realized.
The pressing device of the embodiment is used as follows:
firstly, placing a mixture in a first die cavity, pressing the mixture in the first die cavity by a first pressing plate to form a pre-pressing body of a friction body, and retracting and separating the first pressing plate from a first opening; in the process, the friction body is pre-pressed and formed for the first time, has certain strength and is convenient for taking and placing the pre-pressed body in the follow-up process;
meanwhile, the feeding mechanism is started, and the steel back is continuously conveyed to the discharging track 42 from the middle cavity of the vibration disc 41 under the continuous vibration of the vibration disc 41; the sucking disc 51 of the transfer mechanism sucks the steel backing at the discharging track 42 and places the steel backing in the second die cavity; at this time, the base 11 in the second mold 2 can be driven by the second driving mechanism to perform an ascending motion, the base 11 can be higher than the annular base 12, and the suction cup 51 can directly place the steel back on the base 11 without extending into the second mold cavity; then the base 11 moves downwards again to reset to the initial position;
secondly, the base 11 of the first die 1 is driven by the second driving mechanism to move upwards, and the pre-pressing body is ejected out of the annular seat 12; at the moment, a clamping cylinder of the taking and placing mechanism clamps the pre-pressing body, and the pre-pressing body is transferred and stacked on the steel back in the second die cavity; or, when the base 11 of the second mold 2 extends out of the top of the annular seat 12, directly stacking the pre-pressing body on the top of the steel backing, and finally, moving the base 11 of the second mold 2 downwards to reset to the initial position;
and finally, the second pressing plate moves towards the second opening and presses the second opening to integrate the friction body and the steel back, the friction body is pressed and molded at the moment, the pressing bonding force exists between the friction body and the steel back, and in the process of transferring the friction body and the steel back to sintering equipment, the relative displacement does not exist between the friction body and the steel back, so that the yield of the sintered friction body is ensured.
Example 2
This embodiment provides a production system of a friction structure, comprising the pressing device and the sintering apparatus of any one of embodiment 1, wherein the sintering device has a sintering chamber.
In the production system of the friction structure of the embodiment, the pressing device in the embodiment 1 is adopted to pre-press the friction body firstly and then press the friction body and the steel back together to form a whole, so that the friction body and the steel back are integrally transferred to the sintering equipment, no relative displacement difference exists between the friction block and the steel back, the yield of the friction structure after the friction body and the steel back are sintered is improved, and the cost is reduced.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A pressing apparatus is characterized by comprising
At least one first mould (1) and at least one second mould (2) arranged on the frame (6); the first mould (1) and the second mould (2) are respectively provided with a first mould cavity and a second mould cavity;
the first pressing plate and the second pressing plate are respectively arranged in a one-to-one correspondence manner to the first opening of the first mold cavity and the second opening of the second mold cavity; the first pressing plate and the second pressing plate are respectively driven by respective first driving mechanisms and can be pressed in or separated from respective corresponding openings of the die cavities;
and the taking and placing mechanism (7) is arranged on the rack (6) and can reciprocate between the first die cavity and the second die cavity.
2. A pressing device according to claim 1, wherein the first mould (1) and/or the second mould (2) comprise an annular seat (12) fixed on the frame (6), and a base (11) vertically sealably slidably arranged in the annular seat (12) driven by a second driving mechanism; a mold cavity is formed between the top surface of the base (11) and the inner wall of the annular seat (12).
3. A pressing device according to claim 2, wherein the first die (1) and/or the second die (2) further comprise uprights (34) in one-to-one correspondence with the base (11);
the upright post (34) is fixed on the frame (6) and a hollow inner cavity is formed in the upright post (34); the annular seat (12) is fixed on the top of the upright (34); the second driving mechanism is arranged in the hollow inner cavity.
4. A press device according to claim 2 or 3, wherein the second drive mechanism comprises
The screw rod (31) extends vertically and is fixed on the rack (6);
a transition piece (32) which is screwed on the screw rod (31);
the output rotating shaft of the first driver (33) is connected with the bottom of the screw rod (31);
the transition piece (32) is connected with the base (11).
5. A pressing arrangement according to claim 2 or 3, wherein the second mould cavity comprises a lower first portion and an upper second portion;
the shape of the first part is matched with that of the steel backing; the second portion has an outer shape matching the outer shape of the first mold cavity.
6. A pressing arrangement according to any one of claims 1-3, wherein there are at least two first moulds (1) and/or second moulds (2), all the first moulds (1) being distributed on the same row of the frame (6), and all the second moulds (2) being distributed on the same row of the frame (6); and the first die (1) and the second die (2) are arranged in parallel on the frame (6).
7. A pressing apparatus according to any one of claims 1 to 3, wherein said pick and place mechanism (7) comprises a first robot arm, and a clamping cylinder fixed to said first robot arm;
the clamping cylinder is driven by the first mechanical arm to reciprocate between the first die cavity and the second die cavity.
8. A press device according to any one of claims 1-3, further comprising at least one feed mechanism; and a transfer mechanism (5) arranged on the frame (6);
the feeding mechanism is provided with a discharging track (42);
the transfer mechanism (5) is used for transferring the workpiece from the discharging rail (42) to the first die cavity.
9. The pressing device according to claim 8, wherein the feeding mechanism is further provided with a spiral feeding vibration disc (41), and the discharging track (42) is communicated with an outlet of the feeding vibration disc (41);
the transfer mechanism (5) comprises a sucker (51) and negative pressure equipment for providing suction force for the sucker (51); and a second mechanical arm for driving the suction cup (51) to move between the discharging rail (42) and the first mold cavity.
10. A production system of a friction structure is characterized by comprising
The press apparatus of any one of claims 1-9;
the sintering device is provided with a sintering cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021937279.3U CN213135041U (en) | 2020-09-07 | 2020-09-07 | Pressing device and production system of friction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021937279.3U CN213135041U (en) | 2020-09-07 | 2020-09-07 | Pressing device and production system of friction structure |
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| Publication Number | Publication Date |
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| CN213135041U true CN213135041U (en) | 2021-05-07 |
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| CN202021937279.3U Active CN213135041U (en) | 2020-09-07 | 2020-09-07 | Pressing device and production system of friction structure |
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| CN (1) | CN213135041U (en) |
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- 2020-09-07 CN CN202021937279.3U patent/CN213135041U/en active Active
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