Rotary multi-station brake pad press-fitting heat treatment equipment

Abstract

Rotary multi-station brake pad press-fitting heat treatment equipment comprises a base and a rotating platform, the rotating platform is arranged on the base, press-fitting heat treatment stations are distributed on the rotating platform in a circumferential shape, each press-fitting heat treatment station is provided with a station tool plate, a floating cylinder and a press-fitting mechanism, the station tool plates are connected to the rotating platform, and the floating cylinder is connected to the floating cylinder. A lower heating plate is connected to the station tool plate, a mold cavity is formed in the lower heating plate, and an electric heating pipe is arranged in the lower heating plate; a press-fitting mechanism is arranged above the station tool plate and comprises a press-fitting frame, a downward pressing mechanism, an upper connecting plate and an upper heating plate, the downward pressing mechanism is installed on the press-fitting frame and connected with the floating cylinder, the upper connecting plate is connected to the floating cylinder, the upper heating plate is connected with the upper connecting plate, and an electric heating pipe is arranged in the upper heating plate. According to the utility model, equal-density pressing is realized, the thickness consistency of the brake pad is ensured, the production efficiency and the product yield consistency are improved, and the operation and maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of equipment for the pressing and heat treatment of brake pad, belong to brake pad manufacturing technical field. BACKGROUND

[0002] Brake pad is the key safety parts of automobile brake system, and the material of brake pad is metal or semi-metal or ceramic. First, the friction material and adhesive are mixed together to form a powder premix, the premix is placed in the mold cavity of the mold with a set weight, and then pressed into shape on the press, and then heat treated.

[0003] Cold pressing once forming process is the current advanced brake pad production process, and its process flow is mixing, steel back coating, press pressing and heat treatment. The specific process is as follows:

[0004] 1. Mixing:

[0005] According to the formula, the required components are mixed in a certain proportion, then poured into a blender to break and mix evenly to form a premix.

[0006] 2. Steel back coating:

[0007] After the steel back is treated, the prepared liquid is uniformly sprayed on the reverse side of the steel back using a glue sprayer, and then dried for use.

[0008] 3. Press pressing:

[0009] At room temperature, the premix and the coated steel back are put into the mold together, and the premix and the steel back are pressed together by the press to form high pressure. The mold does not need to be heated, which saves energy consumption.

[0010] 4. Heat treatment:

[0011] The formed brake pad is heat treated to further improve the friction performance of the friction material.

[0012] The above cold pressing once forming process has high production efficiency, but the stability and density of the hydraulic machine are problematic, resulting in inconsistent thickness of the brake pad, sometimes with a deviation of ±0.3mm, leading to poor product yield consistency. The pressure source of the press is provided by a hydraulic system, which has the problems of oil leakage, difficult maintenance, high repair cost, etc.

[0013] How to reduce production cost, improve production efficiency and ensure product yield consistency has become the research direction in this field. INVENTION CONTENTS

[0014] The utility model discloses to the product yield consistency bad problem existing in the prior art brake pad press -mounting technology provides a production efficiency is high, and product yield consistency good rotary multi -station brake pad press -mounting heat treatment equipment.

[0015] The rotary multi-station brake pad press-mounting heat treatment equipment of the utility model adopts the following technical scheme:

[0016] The equipment, including base and rotating platform, rotating platform sets up on the base, and rotating platform is in the shape of a circle and is distributed with press -mounting heat treatment station, and each press -mounting heat treatment station is provided with station tooling plate, floating cylinder and press -mounting mechanism, and station tooling plate is connected on rotating platform, and lower heating plate is connected on station tooling plate, and electric heating tube is arranged in lower heating plate, and the top of station tooling plate is provided with press -mounting mechanism, and the press -mounting mechanism includes press -mounting frame, lower pressure mechanism, upper connecting plate and upper heating plate, and lower pressure mechanism is installed on press -mounting frame and is connected with floating cylinder, and upper connecting plate is connected on floating cylinder, and upper heating plate is connected with upper connecting plate, and electric heating tube is arranged in upper heating plate, and upper heating plate is directly above lower heating plate, and die cavity is arranged in lower heating plate, and the shape of die cavity is consistent with the brake pad needing to be processed.

[0017] Rotary support and transmission mechanism are arranged on the base, the rotating platform is connected on the rotary support, and the rotary support is connected with the transmission mechanism. The transmission mechanism adopts gear transmission, the driven gear is arranged on the rotary support, the driving gear is installed on the rotating shaft of the servo motor and is engaged with the driven gear, and the servo motor is installed on the base. The servo motor drives the rotary support and the rotating platform on it to rotate through gear transmission.

[0018] The rotating platform can adopt the rotating platform with a driving mechanism in the prior art, and the rotating platform itself has power.

[0019] An integrated electric slip ring is arranged on the rotating platform, and electrical interfaces are distributed on the integrated electric slip ring. The integrated electric slip ring provides centralized power supply, and each electrical interface distributes power. The integrated electric slip ring is arranged at the middle position on the rotating platform.

[0020] A heat insulation plate is arranged between the upper heating plate and the station tooling plate to isolate the temperature of the upper heating plate and the station tooling plate, achieving the purpose of energy saving and heat insulation. Temperature sensors are arranged in the heating plate to ensure the uniformity of heating and the accuracy of temperature acquisition.

[0021] The lower pressure mechanism adopts an electric cylinder, especially a servo electric cylinder.

[0022] The floating cylinder includes a cavity and a floating pressure head, and the floating pressure head is distributed on the cavity and is floatingly arranged in the cavity, with one end extending out of the cavity and the cavity being filled with hydraulic oil. The floating range of the floating pressure head meets the requirements of equal-density pressing of brake pads with different thicknesses.

[0023] The guide column is connected to the cavity of the floating cylinder at one end and extends out of the guide hole on the press frame at the other end.

[0024] The heat insulation plate is arranged between the upper connecting plate and the upper heating plate to isolate the upper heating plate and the upper connecting plate in temperature, so that heat is prevented from being transferred to the floating head, and the energy-saving and heat-insulating purposes are achieved.

[0025] During the operation of the equipment, the rotation of the rotating platform makes one press assembly heat treatment station be at a steel back placing position, the steel back (with the glue surface upward) is placed into the mold cavity of the lower heating plate (mold), and then the press assembly heat treatment station is rotated to a material placing position (at the same time, the next press assembly heat treatment station is at the steel back placing position, and each press assembly heat treatment station is operated in turn), the premixed material is placed in the mold cavity, and then the press assembly heat treatment station is rotated to a press assembly position.

[0026] The utility model has the following characteristics:

[0027] 1. The equal density pressing is realized, and the consistency of the thickness of the brake pad is ensured

[0028] The floating cylinder is adopted, the hydraulic connector principle of the floating cylinder can ensure that the output pressure of each floating head is consistent, the problem that the thickness of the existing brake pad is inconsistent is eliminated, and the equal density pressing is realized.

[0029] 2. The pressing temperature of each brake pad is consistent through the independent heating, heat insulation and temperature control of the upper heating plate and the lower heating plate, and the one-time yield of the product is improved.

[0030] 3. The equal density pressing and heat treatment are organically combined together, the servo electric cylinder and the floating cylinder are adopted for pressing, the equal density pressing of each brake pad is ensured, the PID temperature control technology is adopted to ensure that the temperature of each brake pad is independently controllable, and the consistency of the temperature is ensured.

[0031] 4. The utility model integrates multiple stations on a rotating platform, the rotation angle of each station is controlled by a servo, each press assembly heat treatment station is operated in turn, continuous production is realized, the production efficiency is improved, and the occupied area is reduced.

[0032] 5. The servo cylinder is used as the pressure source, and has multiple control modes, which can meet the rapid movement in the idle state and the accurate pressure control in the pressing state, and the speed and pressure accuracy are far higher than those of the hydraulic system of the same specification. Meanwhile, the hydraulic station, oil tank and all hydraulic pipelines are omitted, the oil leakage problem is completely avoided, and the maintenance cost is greatly reduced.

[0033] 6. Each upper heating plate (mold) uses separate heating and temperature control to ensure temperature consistency.

[0034] 7. The problem of integrated cold pressing, one-time forming, medium-density pressing and heat treatment is solved, the production efficiency and product yield consistency are improved, and the operation and maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic diagram of the three-dimensional structure of the rotating multi-station brake pad pressing and heat treatment equipment of the utility model.

[0036] Figure 2 is a structure front view of the rotating multi-station brake pad pressing and heat treatment equipment of the utility model.

[0037] Figure 3 is a top view of Figure 2 .

[0038] Figure 4 is a structure front view of the rotating platform and the lower tooling in the utility model.

[0039] Figure 5 is a top view of Figure 4 .

[0040] Figure 6 is an enlarged view of A in Figure 4 .

[0041] Figure 7 is a structure schematic diagram of the floating cylinder in the utility model. Wherein: (a) is a sectional view, (b) is a top view of (a).

[0042] Figure 8 is a three-dimensional structure schematic diagram of the servo cylinder and the upper tooling in the utility model.

[0043] Figure 9 is a left view of Figure 8 .

[0044] Figure 10 is a top view of Figure 8 .

[0045] In the figure: 1. Base, 2. Rotating platform, 3. Floating cylinder, 4. Pressing mechanism, 5. Electric control unit;

[0046] 101. swivel support, 102. servo motor;

[0047] 201. integrated electrical slip ring, 202. electrical interface, 203. brake pad, 204. station tooling plate, 205. heat insulation plate, 206. lower heating plate, 207. heating pipe, 208. temperature sensor, 209. rotary platen;

[0048] 301. floating ram, 302. hydraulic oil, 303. cavity;

[0049] 401. servo cylinder, 402. upper press platen, 403. press side force plate, 404. guide column, 405. upper connecting plate, 406. heat insulation plate, 407. upper heating plate, 408. heating pipe, 409. temperature sensor; DETAILED DESCRIPTION

[0050] As shown in Figure 1 , Figure 2 and Figure 3 , the rotary multi-station brake pad press-fitting heat treatment equipment of the utility model, including base 1, rotary platform 2, floating cylinder 3, press-fitting mechanism 4 and electric control unit 5. Base 1 is the fixed foundation of the whole equipment. Rotary platform 2 is arranged on base 1,

[0051] Rotary support 101 is arranged on base 1, and rotary platform 2 is connected on rotary support 101. Rotary support 101 is connected with servo motor 102 through transmission mechanism, transmission mechanism adopts gear transmission, driven gear is installed on rotary support 101, or gear is directly machined on rotary support 101, driving gear is installed on the rotating shaft of servo motor 102 and is engaged with driven gear, and servo motor 102 is installed on base 1. Servo motor 102 drives rotary support 101 and rotary platform 2 on it to rotate through gear transmission, and rotary platform 2 is controlled to rotate to the set station angle.

[0052] Referring to Figure 4 , Figure 5 and Figure 6, the rotating platform 2 comprises a rotating table 209, an integrated electric slip ring 201 and a work station tool plate 204. The integrated electric slip ring 201 is arranged at the middle position of the rotating table 209, and the electric interfaces 202 are distributed on the integrated electric slip ring 201. The integrated electric slip ring 201 provides centralized power supply, and the power supply power is distributed through the electric interfaces 202. The work station tool plate 204 is connected to the rotating table 209 and is uniformly distributed in a circumferential shape. The lower heating plate 206 is connected to the work station tool plate 204 in a T-shaped slot quick change mode. The heat insulation plate 205 is arranged between the lower heating plate 206 and the work station tool plate 204, and the heat insulation plate 205 insulates the temperature between the lower heating plate 206 and the work station tool plate 204, so as to avoid heat transfer to the work station tool plate 204, and achieve the purpose of energy saving and heat insulation. The heating pipe 207 and the temperature sensor 208 are inserted into the pressure of the floating pressure head 301 of each lower heating plate, and the pressure is consistent, so as to realize equal density pressing. The floating cylinder 3 comprises a cavity 303 and a floating pressure head 301. The cavity 303 is distributed with a plurality of floating pressure heads 301. The floating pressure head 301 is floatingly arranged in the cavity 303 206, so as to ensure the uniformity of heating and the accuracy of temperature collection. The lower heating plate 206 is provided with a mold cavity, and the shape of the mold cavity is consistent with the brake pad to be processed.

[0053] Referring to Figure 7 , the floating cylinder 3 adopts the principle of hydraulic communication device, so as to ensure that each. The floating pressure head 301 is a stepped shaft, the large end of which is arranged in the cavity 303, the small end of which extends out of the cavity 303, and sealing devices are arranged between the cavity 303 and the floating pressure head 301. The cavity 303 is filled with high-temperature resistant hydraulic oil 302. The floating range of the floating pressure head 301 is designed according to ±Nmm (several millimeters), so as to meet the equal density pressing of the brake pad 203. The floating pressure head 301 adopts limit design, and when the floating exceeds the maximum 2Nmm, the stroke of the floating pressure head is limited.

[0054] Participate Figure 8 , Figure 9 and Figure 10The pressing mechanism 4 comprises a servo cylinder 401, a pressing frame, an upper connecting plate 405 and an upper heating plate 407. The lower part of the upper platen 402 is provided with pressing side plates 403 on both sides, forming a pressing frame. The servo cylinder 401 is installed on the pressing frame, with its piston rod downwardly connected with the cavity 303 in the floating cylinder 3. A guide column 404 is arranged between the floating cylinder 3 and the upper platen 402 of the pressing machine, one end of the guide column 404 being connected with the cavity 303 of the floating cylinder 3 and the other end extending out of the guide hole on the upper platen 402 of the pressing machine. The upper connecting plate 405 is connected with the floating plunger 301 in the floating cylinder 3, and the upper heating plate 407 is connected with the upper connecting plate 405, with a heat insulation plate 406 arranged therebetween to isolate the upper heating plate 407 and the upper connecting plate 405 in temperature, avoiding heat transfer to the floating plunger 301, achieving the purpose of energy saving and heat insulation. The heating pipe 408 and the temperature sensor 409 are inserted into each heating plate 407, ensuring the uniformity of heating and the accuracy of temperature acquisition. The servo cylinder 401 is controlled to achieve fast movement in the idle stroke, and the pressure process is controlled by the servo to achieve precise pressure control. The servo cylinder 401 drives the floating cylinder 3 to move downward, and the floating plunger 301 transmits the pressure to the brake pad 203 through the upper connecting plate 405, so that each brake pad 203 is pressed with equal density. The upper heating plate 407 is directly above the lower heating plate 206.

[0055] The electric control unit 5 adopts PLC plus touch screen control. Each station can be designed with different pressure, temperature and other parameters, meeting the process requirements of different types of brake pads, realizing multi-variety small batch and large-scale production, and improving the flexibility of production.

[0056] The upper heating plate is directly above the lower heating plate, and the lower heating plate is provided with a mold cavity with a shape consistent with the brake pad to be processed.

[0057] The operation process of the above equipment is as follows.

[0058] Start the servo motor 102 to rotate the rotating platform 2, drive one pressing heat treatment station to the steel back placement position, place the coated steel back (glue surface upward) into the mold cavity of the lower heating plate 206, and then rotate the pressing heat treatment station to the feeding position, while the next pressing heat treatment station is in the steel back placement position, and each pressing heat treatment station is operated in turn. The premixed material is placed in the mold cavity, and then rotated to the pressing position.

[0059] Start the servo cylinder 401 in the pressing mechanism to achieve fast movement in the idle stroke, drive the upper heating plate 407 to press on the mold cavity of the lower heating plate 206, and make the brake pad be pressed and formed. During the pressing process, the pressure is accurately controlled, and the floating cylinder 3 is used to realize equal density pressing.

[0060] After the press forming, the upper heating plate 206 and the lower heating plate 407 heat simultaneously, the brake pad 203 is heated, and the heat treatment is carried out as required.

[0061] Through the rotation of the rotating platform 2, each press-fitting heat treatment station is sequentially operated, continuous production is realized, and production efficiency is improved.

Claims

1. A rotary multi-station brake pad press and heat treatment apparatus, characterized by, The device comprises a base and a rotating platform, the rotating platform is arranged on the base, and the rotating platform is circumferentially provided with pressing and heat treatment stations, each of which is provided with a station tooling plate, a floating cylinder and a pressing mechanism, the station tooling plate is connected to the rotating platform, a lower heating plate is connected to the station tooling plate, and an electric heating pipe is arranged in the lower heating plate; a pressing mechanism is arranged above the station tooling plate, the pressing mechanism comprises a pressing frame, a pressing mechanism, an upper connecting plate and an upper heating plate, the pressing mechanism is installed on the pressing frame and connected to the floating cylinder, the upper connecting plate is connected to the floating cylinder, the upper heating plate is connected to the upper connecting plate, an electric heating pipe is arranged in the upper heating plate, and the upper heating plate is directly above the lower heating plate, a mold cavity is arranged in the lower heating plate, and the shape of the mold cavity is consistent with that of the brake pad to be machined.

2. The rotary multi-station brake pad press-and-heat apparatus of claim 1, wherein, A rotary support and a transmission mechanism are arranged on the base, the rotating platform is connected to the rotary support, and the rotary support is connected to the transmission mechanism; the transmission mechanism adopts gear transmission, a driven gear is arranged on the rotary support, a driving gear is installed on the rotating shaft of a servo motor and engaged with the driven gear, and the servo motor is installed on the base.

3. The rotary multi-station brake pad press-and-heat apparatus of claim 1, wherein, An integrated electric slip ring is arranged on the rotating platform, and the integrated electric slip ring is provided with electrical interfaces.

4. The rotary multi-station brake pad press-and-heat apparatus of claim 1, wherein, The integrated electric slip ring is arranged at a middle position on the rotating platform.

5. The rotary multi-station brake pad press-and-heat apparatus of claim 1, wherein, A heat insulation plate is arranged between the upper heating plate and the station tooling plate, and a temperature sensor is arranged in the upper heating plate.

6. The rotary multi-station brake pad press-and-heat apparatus of claim 1, wherein, The lower pressing mechanism adopts an electric cylinder.

7. The rotary multi-station brake pad press-and-heat apparatus of claim 1, wherein, The floating cylinder comprises a cavity and a floating pressing head, the floating pressing head is arranged on the cavity and floatingly arranged in the cavity, one end of the floating pressing head extends out of the cavity, and the cavity is filled with hydraulic oil.

8. The rotary multi-station brake pad press-and-heat apparatus of claim 7, wherein, A guide column is arranged between the cavity of the floating cylinder and the pressing frame, one end of the guide column is connected to the cavity of the floating cylinder, and the other end of the guide column extends out of a guide hole on the pressing frame.

9. The rotary multi-station brake pad press-and-heat apparatus of claim 1, wherein, A heat insulation plate is arranged between the upper connecting plate and the upper heating plate, and a temperature sensor is arranged in the upper heating plate.

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