CN110271128B - Automatic weighing and feeding process for brake pad pressing - Google Patents
Automatic weighing and feeding process for brake pad pressing Download PDFInfo
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- CN110271128B CN110271128B CN201910645816.2A CN201910645816A CN110271128B CN 110271128 B CN110271128 B CN 110271128B CN 201910645816 A CN201910645816 A CN 201910645816A CN 110271128 B CN110271128 B CN 110271128B
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- Prior art keywords
- feeding
- hopper
- brake pad
- automatic weighing
- plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
- B29C2043/3405—Feeding the material to the mould or the compression means using carrying means
- B29C2043/3427—Feeding the material to the mould or the compression means using carrying means hopper, vessel, chute, tube, conveying screw, for material in discrete form, e.g. particles or powder or fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/16—Frictional elements, e.g. brake or clutch linings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides an automatic weighing and feeding process for brake pad pressing, and belongs to the technical field of brake pad production. The problem that the feeding accuracy of the existing trapezoidal brake pad is low is solved. The brake pad pressing automatic weighing and feeding process is characterized by comprising the following steps of: step a, automatic weighing and conveying: accurate feeding is carried out through an automatic weighing mechanism, and raw materials required by single pressing of the brake pad are conveyed from a feeding barrel to a feeding hopper; step b, first feeding: adjusting a feeding center of a feeding hopper, and feeding raw materials in the feeding hopper into a die for the first time; step c, feeding for the second time: and adjusting a feeding center of the feeding hopper, and feeding the raw materials in the feeding hopper into the die for the second time. The center-adjustable feeding hopper and the two-step feeding method are arranged, so that the flatness of materials in a die cavity can be fully ensured.
Description
Technical Field
The invention belongs to the technical field of brake pad production, and relates to an automatic weighing and feeding process for brake pad pressing.
Background
The brake pad is a key safety part of an automobile brake system, NAO (asbestos-free organic matter) or semi-metal is mainly prepared by mixing materials such as fiber, resin, filling material, friction regulator, adhesive and the like, placing powdery premix with preset weight in a die cavity of a die, and then pressing and forming the powder premix on a press. In the processing process, the raw material supply amount needs to be accurate, too much or too little, after the pressing forming, the pressed brake pad needs to be withdrawn and enters the next pressing process, and the existing feeding, pressing and returning are independent systems, so that the labor intensity is high, the working efficiency is low, the product yield is not high, and the mass fine production is not facilitated. Chinese patent [ application publication No.: CN108943822a discloses a multi-station automatic brake block pressing machine, which comprises a frame, wherein the frame is provided with a feeding system, a pressing system and a material returning system; the pressing system comprises a press, an upper die, a die cylinder and a plurality of lower dies, wherein the die cylinder is provided with a pressing channel in the vertical direction and a material returning channel in the horizontal direction; the feeding system is provided with a feeding hopper for feeding the weighed materials into the pressing channel; the material returning system comprises a push rod pushing the lower die and the brake pad on the lower die out along the material returning channel, a mechanical claw clamping the lower die and the brake pad, a brake pad conveyor belt and a material returning table, wherein the mechanical claw is connected with the frame through a moving mechanism. Although the automatic operation can be realized to this briquetting machine, its precision when throwing the material is lower, especially when producing trapezoidal brake block product easily because throw the material inhomogeneous and lead to the yield of product lower.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an automatic weighing and feeding process for brake pad pressing, which aims to solve the technical problem of improving feeding uniformity, so that the produced brake pad product has uniformity and consistency.
The aim of the invention can be achieved by the following technical scheme: the automatic weighing and feeding process for the brake pad pressing is characterized by comprising the following steps of:
step a, automatic weighing and conveying: accurate feeding is carried out through an automatic weighing mechanism, and raw materials required by single pressing of the brake pad are conveyed from a feeding barrel to a feeding hopper;
step b, first feeding: adjusting a feeding center of a feeding hopper, and feeding raw materials in the feeding hopper into a die for the first time;
step c, feeding for the second time: and adjusting a feeding center of the feeding hopper, and feeding the raw materials in the feeding hopper into the die for the second time.
In the brake pad pressing automatic weighing and feeding process, the feeding center of the feeding hopper in the step b and the feeding center of the feeding hopper 5 in the step c are respectively positioned at two sides of the feeding hopper center.
In the automatic weighing and feeding process for brake pad pressing, the feeding barrel is located above the feeding hopper, the automatic weighing mechanism comprises a hollow screw, one end of the hollow screw is provided with a feeding end, the other end of the hollow screw is provided with a discharging end, the feeding end is located below the feeding barrel and connected with the feeding barrel, and the discharging end is located above the feeding hopper.
In the automatic weighing and feeding process for brake pad pressing, the feeding hopper comprises a hopper body, a feeding plate I and a feeding plate II which are hinged to each other and form a hopper shape are hinged to the bottom of the hopper body, and an adjusting cylinder for driving the feeding plate to slide relative to the hopper body is further arranged between the feeding plate II and the hopper body.
In the automatic weighing and feeding process machine for brake pad pressing, one side of the bottom of the bucket body is provided with the first hinge seat, the other side of the bottom of the bucket body is provided with the second hinge seat, the first hinge seat is provided with the first driving piece for controlling the first feeding plate to open and close, the second hinge seat is provided with the second driving piece for controlling the second feeding plate to open and close, the second feeding plate is connected to the second hinge seat in a sliding mode, and the adjusting cylinder is fixedly connected to the second hinge seat.
In the brake pad pressing automatic weighing and feeding process, the first hinge seat is provided with a limiting piece for forcing the top surface of the first feeding plate to be always abutted against the bottom end of the second feeding plate in the closed state of the feeding hopper.
In the brake pad pressing automatic weighing and feeding process, the bucket body is provided with a limiting block for limiting the inward rotation angle of the feeding plate.
In the brake pad pressing automatic weighing and feeding process, the first driving piece and the second driving piece are motors or electromagnetic valves.
In the brake pad pressing automatic weighing and feeding process, a proximity switch is arranged in the feeding hopper.
In the brake pad pressing automatic weighing and feeding process, a scraping plate rotating at a constant speed is arranged in the feeding barrel.
Compared with the prior art, the invention has the following advantages:
1. the feeding hopper of the brake block pressing machine is adjustable in center, so that the distribution state of materials can be adjusted according to the requirements, and the difficulty of uneven feeding of trapezoid products is solved;
2. the brake pad pressing machine adopts a two-step feeding mode, and can fully ensure the flatness of materials in a die cavity through natural flowing without manually flattening the materials.
Drawings
FIG. 1 is a schematic illustration of a brake pad press and construction incorporating the present invention.
Fig. 2 is a schematic view of the structure of the feeding barrel of the present invention.
Fig. 3 is a state diagram of the charging hopper of the present invention at the time of first charging.
FIG. 4 is a diagram showing the state of the raw materials in the die after the first feeding in the present invention.
Fig. 5 is a state diagram of the charging hopper of the present invention at the time of first charging.
FIG. 6 is a diagram showing the state of the raw materials in the mold after the second shot according to the present invention.
In the figure, 1, a feeding device; 2. a pressing device; 3. a discharging device; 4. charging barrel; 5. a charging hopper; 6. a bucket body; 7. a first feeding plate; 8. a second feeding plate; 9. adjusting a cylinder; 10. a hinge seat I; 11. a hinge seat II; 12. a limiting piece; 13. a limiting block; 14. a hollow screw; 15. a proximity switch; 16. a scraper; 17. and (5) a mold.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1, the embodiment is a brake pad pressing automatic weighing and feeding process applied to a brake pad pressing machine, which comprises the following steps:
step a, automatic weighing and conveying: accurate feeding is carried out through an automatic weighing mechanism, and raw materials required by single pressing of the brake pads are conveyed from the feeding barrel 4 to the feeding hopper 5;
step b, first feeding: adjusting the feeding center of the feeding hopper 5, and feeding the raw materials in the feeding hopper 5 into the die 17 for the first time;
step c, feeding for the second time: the charging center of the charging hopper 5 is adjusted, and the raw material in the charging hopper 5 is charged into the mold 17 for the second time.
Specifically, the brake block press includes feeding device 1, pressing device 2 and discharging device 3, feeding device 1 is including throwing storage bucket 4 and throwing hopper 5, throw storage bucket 4 and be located the top of throwing hopper 5, throw and be provided with automatic weighing mechanism between storage bucket 4 and the throwing hopper 5, automatic weighing mechanism includes two hollow screw rods 14 that set up side by side and weigh the conveying jointly, the one end of hollow screw rod 14 has the feed end, the other end has the discharge end, the feed end is located the below of throwing storage bucket 4 and links to each other with throwing storage bucket 4, the discharge end is located the top of throwing hopper 5. The weighing and feeding mode adopts a hollow screw rod rotating mode, so that the problem of screw rod clamping is solved, the feeding process is noiseless, the feeding is smooth, and the precision is high.
Referring to fig. 2, a plurality of scrapers 16 are provided in the bucket 4. Each scraper 16 is stirred slowly and continuously, so that the uniformity of the materials in the charging bucket 4 is ensured, and the rotation speed of the scraper is 5 revolutions per minute, so that the speed of the materials fed into the two hollow screws 14 in the automatic weighing process is consistent.
With reference to fig. 3-6, the feeding hopper 5 comprises a hopper body 6, a feeding plate I7 and a feeding plate II 8 which are relatively opened and closed and form a hopper shape are hinged to the bottom of the hopper body 6, and an adjusting cylinder 9 for driving the feeding plate II 8 to slide relative to the hopper body 6 is further arranged between the feeding plate II 8 and the hopper body 6.
Further, one side of the bottom of the bucket body 6 is provided with a first hinging seat 10, the other side is provided with a second hinging seat 11, the first hinging seat 10 is provided with a first driving piece for controlling the opening and closing of the first feeding plate 7, the second hinging seat 11 is provided with a second driving piece for controlling the opening and closing of the second feeding plate 8, the second feeding plate 8 is slidably connected to the second hinging seat 11, and the adjusting cylinder 9 is fixedly connected to the second hinging seat 11.
Further, a limiting piece 12 for forcing the top surface of the first feeding plate 7 to always lean against the bottom end of the second feeding plate 8 in the closed state of the feeding hopper 5 is arranged on the first hinging seat 10.
Further, the bucket body 6 is provided with a limiting block 13 for limiting the inward rotation angle of the second feeding plate 8.
Further, the first driving piece and the second driving piece are motors or electromagnetic valves, and the opening and closing modes of the first feeding plate 7 and the second feeding plate 8 at the bottom of the bucket body 6 are the prior art.
Further, be provided with a plurality of proximity switch 15 in throwing hopper 5, proximity switch 15 is annular evenly setting in throwing hopper 5, and when the raw materials height exceeded proximity switch 15, automatic weighing mechanism carries out the adjustment of transfer rate to two mutually independent hollow screw rods 14 under electric control device's control, can further realize accurate material loading.
In the embodiment, during the first feeding, the feeding center of the feeding hopper 5 is relatively close to one side of the hinge seat II 11, and after the first feeding is finished, the top surface of the raw material obtained after feeding is in an inclined state, as shown in fig. 4; during the second feeding, the feeding plate I7 extends downwards relative to the hinge seat II 11 under the action of the adjusting cylinder 9, so that the feeding center moves towards one side of the hinge seat I10, and after the second feeding is finished, the top surface of the raw material obtained after feeding is in a plane state, as shown in fig. 6.
The invention has the following advantages:
1. the rotation of the scraping plate 15 in the feeding barrel 4 ensures that the materials in the feeding barrel 4 are uniform and have no layering; meanwhile, as accurate feeding is carried out between the feeding barrel 4 and the feeding hopper through the automatic weighing mechanism, a large preparation amount can be prepared in the feeding barrel 4, the feeding times of workers are less, and the working strength is low;
2. the weighing and feeding modes adopt a hollow screw rotating mode, so that the problem of screw clamping is solved, the feeding process is noiseless, the feeding is smooth, the precision is high, and meanwhile, the design of the hollow screw 14 ensures that the weighing control error is reduced to be within 2 g;
3. adopts a double-screw synchronous belt and positioning double-insurance mode to ensure the speed and the accuracy of automatic feeding
4. The feeding hopper 5 adopts an adjustable center, so that the distribution state of the materials can be adjusted as required, and the difficulty of uneven feeding of the trapezoid products is solved;
5. the two-step feeding mode is adopted to ensure that the flatness of the material in the cavity of the die 18 is less than 0.3mm, and the material does not need to be flattened manually.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The automatic weighing and feeding process for the brake pad pressing is characterized by comprising the following steps of:
step a, automatic weighing and conveying: accurate feeding is carried out through an automatic weighing mechanism, and raw materials required by single pressing of the brake pad are conveyed from a feeding barrel (4) to a feeding hopper (5);
step b, first feeding: adjusting a feeding center of a feeding hopper (5), and feeding raw materials in the feeding hopper (5) into a die (17) for the first time;
step c, feeding for the second time: adjusting a feeding center of the feeding hopper (5), and feeding the raw materials in the feeding hopper (5) into the die (17) for the second time;
in the step b, the feeding center of the feeding hopper (5) and the feeding center of the feeding hopper (5) in the step c are respectively positioned at two sides of the center of the feeding hopper (5), the feeding hopper (5) comprises a hopper body (6), the bottom of the hopper body (6) is hinged with a feeding plate I (7) and a feeding plate II (8) which are relatively opened and closed and form a hopper shape, an adjusting cylinder (9) for driving the feeding plate II (8) to slide relative to the hopper body (6) is further arranged between the feeding plate II (8) and the hopper body (6), one side of the bottom of the hopper body (6) is provided with a hinging seat I (10), the other side of the bottom of the hopper body (6) is provided with a hinging seat II (11), the first hinge seat (10) is provided with a first driving part for controlling the opening and closing of the first feeding plate (7), the second hinge seat (11) is provided with a second driving part for controlling the opening and closing of the second feeding plate (8), the second feeding plate (8) is connected to the second hinge seat (11) in a sliding manner, the adjusting cylinder (9) is fixedly connected to the second hinge seat (11), the feeding center of the feeding hopper (5) is relatively close to one side of the second hinge seat (11) when feeding for the first time, the top surface of the raw material obtained after feeding is in an inclined state after the first feeding is finished, the first feeding plate (7) extends downwards relative to the second hinge seat (11) under the action of the adjusting cylinder (9) when feeding for the second time, so that the feeding center moves to one side of the hinge seat I (10), and when the second feeding is finished, the top surface of the raw material obtained after the feeding is in a plane state.
2. The brake pad pressing automatic weighing and feeding process according to claim 1, wherein the feeding barrel (4) is located above the feeding hopper (5), the automatic weighing mechanism comprises a hollow screw (14), one end of the hollow screw (14) is provided with a feeding end, the other end of the hollow screw is provided with a discharging end, the feeding end is located below the feeding barrel (4) and connected with the feeding barrel (4), and the discharging end is located above the feeding hopper (5).
3. The automatic weighing and feeding process for brake pad pressing according to claim 1, wherein a limiting piece (12) for forcing the top surface of the first feeding plate (7) to always lean against the bottom end of the second feeding plate (8) in the closed state of the feeding hopper (5) is arranged on the first hinging seat (10).
4. A brake pad pressing automatic weighing and feeding process according to claim 3, wherein the bucket body (6) is provided with a limiting block (13) for limiting the inward rotation angle of the feeding plate II (8).
5. The automatic weighing and feeding process for brake pad pressing according to claim 1, wherein the first driving member and the second driving member are motors or electromagnetic valves.
6. The brake pad pressing automatic weighing and feeding process according to claim 1, wherein a proximity switch (15) is arranged in the charging hopper (5).
7. The automatic weighing and feeding process for brake pad pressing according to claim 1, wherein a scraper (16) rotating at a constant speed is arranged in the feeding barrel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910645816.2A CN110271128B (en) | 2019-07-17 | 2019-07-17 | Automatic weighing and feeding process for brake pad pressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910645816.2A CN110271128B (en) | 2019-07-17 | 2019-07-17 | Automatic weighing and feeding process for brake pad pressing |
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| Publication Number | Publication Date |
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| CN110271128A CN110271128A (en) | 2019-09-24 |
| CN110271128B true CN110271128B (en) | 2023-06-23 |
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| CN201910645816.2A Active CN110271128B (en) | 2019-07-17 | 2019-07-17 | Automatic weighing and feeding process for brake pad pressing |
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