A hot pressing die for automobile brake linings that is easy to demould

Abstract

The present invention provides a hot-pressing mold for automobile brake linings that is easy to demold, and relates to the field of automobile brake lining production. The hot-pressing mold for automobile brake linings that is easy to demold comprises a proportional hot press, which comprises a frame, a mold placement frame fixedly mounted in the middle of the frame, and an upper extrusion plate and a lower extrusion plate that can move toward each other are respectively provided on the upper and lower sides of the frame, wherein the upper extrusion plate can slide back and forth. The hot-pressing mold for automobile brake linings that is easy to demold places friction material inside an inner shell and places a back plate at the top of the inner shell. The hot-pressing mold for automobile brake linings is achieved by heating the material with a heating pipe and extruding the upper and lower extrusion plates. After the hot-pressing is completed, the heating pipe stops heating, and an extension pipe supplies air to a cooling channel through an external air supply mechanism to accelerate heat dissipation, thereby cooling the automobile brake lining, thereby avoiding high temperatures that may cause adhesion and demolding failure during demolding.

Description

Technical Field

[0001] The invention relates to the field of automobile brake lining production, in particular to an automobile brake lining hot pressing mold which is easy to demould. Background Art

[0002] Automobile brake linings are composed of friction materials and adhesives. When braking, they are squeezed against the brake disc or brake drum to generate friction, thereby achieving the purpose of deceleration and braking of the vehicle.

[0003] The existing patent (CN214522207U) discloses a motorcycle brake shoe pressing die with good stability, comprising a lower die plate, a positioning rod provided at the upper end of the lower die plate, an upper die plate provided outside the positioning rod, an upper die base provided at the bottom end of the upper die plate, a lower die base provided at the top end of the lower die plate, a docking block provided at the bottom end of the upper die base, a docking groove provided at the top end of the lower die base, a groove provided inside the lower die plate, a mounting plate provided inside the groove, an elastic column provided at the bottom end of the mounting plate, and a spring provided on the outer wall of the elastic column;

[0004] This stable motorcycle brake shoe die has a docking block and a docking groove that effectively limit the position, ensuring the accuracy of the docking between the upper and lower mold bases. This avoids the problem of poor brake shoe molding quality caused by the skew between the upper and lower mold bases, and prevents waste of brake shoes. Since automobile brake linings are produced using a hot pressing process, the main reason for the difficulty in demolding friction blocks is that the temperature drops too slowly to reach the appropriate demolding temperature. Furthermore, residues and adhered release agents mixed with the raw materials make the connection between the raw materials unstable and prone to demolding failure. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a hot pressing die for automobile brake linings that is easy to demould, thereby solving the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hot pressing mold for automobile brake linings that is easy to demold, including a proportional hot press, the proportional hot press including a frame, a mold placement frame fixedly installed in the middle of the frame, the frame is located on the upper and lower sides of the mold placement frame, and an upper extrusion plate and a lower extrusion plate that can move toward each other are respectively provided, wherein the upper extrusion plate can slide back and forth, and a notch is provided above the frame, a guide rail is provided above the proportional hot press, and a cleaning mechanism that can clean the mold placement frame through the notch is at least slidably connected above the guide rail, and a bearing groove is provided on the surface of the mold placement frame, and the inner part of the bearing groove is passed through The mold cavity is fixedly connected by countersunk bolts, and the mold cavity is divided into an outer shell and an inner shell. The inner shell is sleeved on the inside of the outer shell from the bottom of the outer shell, and the lower extrusion plate portion extends to the inside of the inner shell and is slidably connected to the inner shell. The outer surface of the inner shell is fixedly wound with a spirally distributed heating tube, and both ends of the heating tube extend to the outer surface of the outer shell. The outer surface of the inner shell is located in the gap of the heating tube and is wound with a cooling channel. The inlet ends of multiple groups of cooling channels are connected through a connecting block, and another connecting block is connected to the outlet ends of multiple groups of cooling channels. One end of the connecting block is connected to and penetrated by a connecting pipe, which extends to the outer surface of the outer shell, and the gap between the outer shell and the inner shell is filled with heat-conducting material.

[0007] Preferably, a cavity for accommodating the sliding of the automobile brake lining back plate is provided above the interior of the outer shell, and a cavity for accommodating the sliding of the lower extrusion plate is provided above the interior of the inner shell, and an angle of three degrees is set between the two side cavities, which opens upward from the bottom end and is inclined outward.

[0008] Preferably, metal sheets are provided at both ends of the heating tube, an outer ring of the metal sheet is provided with an insulating layer, the metal sheet and the insulating layer are embedded in the interior of the shell, and a sealing ring is embedded in the inner ring of the connecting tube.

[0009] Preferably, both sides of the mold placement frame are provided with plug-in slots connected to and passing through the supporting slots, the interior of the plug-in slots is slidably connected to a sliding slider, the middle of the sliding slider is fixedly connected to an extension tube plugged into the inside of the sealing ring, and a wire with a contact end set at one end, and the wire is in contact with the metal sheet.

[0010] Preferably, the four upper corners of the frame are fixedly installed with telescopic sleeves extending downward, the free ends of the telescopic sleeves are fixedly connected through a "U"-shaped slide groove, the upper extrusion plate is slidably connected to the inside of the slide groove, the bottom end of the frame is fixedly installed with a telescopic hydraulic cylinder extending upward, the lower extrusion plate is fixedly installed on the free end of the telescopic hydraulic cylinder, and the rear end of the frame is fixedly installed with an extension groove that supports the upper extrusion plate, and the extension groove is aligned with the slide groove.

[0011] Preferably, an upper protrusion covering the back plate of the automobile brake lining is provided below the upper extrusion plate, and a lower protrusion slidably connected to the inside of the inner shell is provided above the lower extrusion plate, and the edge of the lower protrusion is in contact with the inner edge of the lower inner shell.

[0012] Preferably, the cleaning mechanism includes a horizontal moving mechanism that moves along the guide rail, a vertical moving mechanism is fixedly installed on the bottom end of the horizontal moving mechanism, a connecting plate is fixedly installed on the bottom end of the vertical moving mechanism, a blowing mechanism is fixedly installed on the connecting plate, the output end of the blowing mechanism is connected to and penetrated by a blowing pipe, a dust suction mechanism is fixedly installed on the connecting plate, the output end of the dust suction mechanism is connected to and penetrated by a dust suction pipe, a spray mechanism is fixedly installed on the connecting plate, and the output end of the spray mechanism is connected to and penetrated by a spray pipe.

[0013] Preferably, the dust suction pipe is located below the blowing pipe, and the spray pipe is located above the blowing pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This easy-to-demold hot-pressing mold for automobile brake linings places the friction material inside the inner shell and the back plate on the top of the inner shell. The automobile brake linings can be hot-pressed by heating the heating tube and coordinating the extrusion of the upper and lower extrusion plates. After the hot pressing is completed, the heating tube stops heating, and the extension tube supplies air to the cooling channel through an external air supply mechanism to accelerate heat dissipation, thereby cooling the automobile brake linings and avoiding high temperature-induced bonding and demolding failure during demolding.

[0016] 2. In this hot-pressing mold for automobile brake linings that is easy to demold, the upper extrusion plate is reset and moved to the top of the extension groove under the action of external force. The cleaning mechanism first uses high-speed airflow to flush the inner shell to remove residues, and then uses a dust suction mechanism to transfer the residues to the outside of the inner shell. Finally, a release agent is sprayed through a spray pipe to prevent residues from affecting demolding.

[0017] 3. The hot-pressing mold for automobile brake linings that is easy to demold has a cavity on the upper part of the inner shell to accommodate the sliding of the automobile brake lining back plate, and a cavity on the upper part of the inner shell to accommodate the sliding of the lower extrusion plate. An angle of three degrees is set between the cavities on both sides, which is opened from the bottom to the top and inclined outwards by three degrees. The setting of the outward angle can facilitate demolding from bottom to top. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the cleaning mechanism of the present invention;

[0020] Figure 3 Schematic diagram of the isometric hot press of the present invention;

[0021] Figure 4 This is a schematic diagram of the mold placement frame of the present invention;

[0022] Figure 5 This is a half-section schematic diagram of the mold cavity of the present invention;

[0023] Figure 6 This is a schematic diagram of the connection of the heating tube of the present invention;

[0024] Figure 7 This is a schematic diagram of the cooling channel connection of the present invention;

[0025] Figure 8 This is a schematic diagram of the connection of the sliding block of the present invention;

[0026] Figure 9 This is a schematic diagram of the protrusion connection of the present invention;

[0027] Figure 10 This is a schematic diagram of the lower protrusion connection of the present invention.

[0028] In the figure: 1. proportional hot press; 11. frame; 12. mold placement frame; 13. lower extrusion plate; 14. notch; 15. upper extrusion plate; 2. guide rail; 3. cleaning mechanism; 121. bearing groove; 122. mold cavity; 123. outer shell; 124. inner shell; 125. heating pipe; 126. cooling channel; 127. connecting block; 128. countersunk bolt; 129. connecting pipe; 21. metal sheet; 22. sealing ring; 4. sliding block; 5. extension pipe; 6. wire; 7. telescopic sleeve; 8. slide; 9. telescopic hydraulic cylinder; 10. extension groove; 23. upper protrusion; 24. lower protrusion; 31. horizontal moving mechanism; 32. vertical moving mechanism; 33. connecting plate; 34. blowing mechanism; 35. blowing pipe; 36. dust suction mechanism; 37. dust suction pipe; 38. spray mechanism; 39. spray pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0031] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] like Figure 1-10 As shown, a hot pressing mold for automobile brake linings that is easy to demould includes a proportional hot press 1, which includes a frame 11. A mold placement frame 12 is fixedly installed in the middle of the frame 11. The frame 11 is located on the upper and lower sides of the mold placement frame 12 and is respectively provided with an upper extrusion plate 15 and a lower extrusion plate 13 that can move toward each other, wherein the upper extrusion plate 15 can slide back and forth. A notch 14 is provided above the frame 11. A guide rail 2 is provided above the proportional hot press 1, and a cleaning mechanism 3 that can clean the mold placement frame 12 through the notch 14 is slidably connected above the guide rail 2. A bearing groove 121 is provided on the surface of the mold placement frame 12. The interior of the bearing groove 121 is fixedly connected to a mold cavity 122 by a countersunk bolt 128. The mold cavity 122 is divided into an outer shell 123 and The inner shell 124 is sleeved on the inside of the outer shell 123 from the bottom of the outer shell 123, and the lower extrusion plate 13 partially extends to the inside of the inner shell 124 and is slidably connected to the inner shell 124. The outer surface of the inner shell 124 is fixedly wound with a spirally distributed heating tube 125, and both ends of the heating tube 125 extend to the outer surface of the outer shell 123. The outer surface of the inner shell 124 is located in the gap of the heating tube 125 and is wound with a cooling channel 126. The inlet ends of multiple groups of cooling channels 126 are connected through a connecting block 127, and another connecting block 127 is connected to the outlet ends of multiple groups of cooling channels 126. One end of the connecting block 127 is connected to and penetrated by a connecting pipe 129, which extends to the outer surface of the outer shell 123. The gap between the outer shell 123 and the inner shell 124 is filled with heat-conducting material.

[0034] A cavity for accommodating the sliding of the back plate of the automobile brake lining is provided on the upper part of the interior of the outer shell 123, and a cavity for accommodating the sliding of the lower extrusion plate 13 is provided on the upper part of the interior of the inner shell 124. An angle of three degrees is set between the cavities on both sides, which opens from the bottom to the top and is inclined outward by three degrees. By setting the outward angle, the demoulding method from bottom to top can be facilitated.

[0035] Metal sheets 21 are provided at both ends of the heating tube 125, and the outer ring of the metal sheet 21 is provided with an insulating layer. Such a setting can facilitate the connection of the heating tube 125 with the existing power supply device. The metal sheet 21 and the insulating layer are embedded in the interior of the outer shell 123, and the inner ring of the connecting tube 129 is embedded with a sealing ring 22. The provision of the sealing ring 22 can facilitate the connection of the connecting tube 129 with the existing gas supply mechanism.

[0036] Both sides of the mold placement frame 12 are provided with plug-in slots that are connected to and pass through the bearing slot 121. The inside of the plug-in slot is slidably connected to a sliding slider 4, which is connected to the mold placement frame 12 through bolts. The middle part of the sliding slider 4 is fixedly connected to an extension tube 5 inserted into the inside of the sealing ring 22, and a wire 6 with a contact end set at one end. The wire 6 is in contact with the metal sheet 21. Through such a setting, it can be ensured that after the mold cavity 122 is placed inside the mold placement frame 12, the connection is achieved through positioning after sliding contact, which facilitates the replacement of the mold cavity 122.

[0037] The four upper corners of the frame 11 are fixedly installed with a downward extending telescopic sleeve 7, the free end of the telescopic sleeve 7 is fixedly connected by a "U"-shaped slide groove 8, and the upper extrusion plate 15 is slidably connected to the inside of the slide groove 8. The bottom end of the frame 11 is fixedly installed with an upward extending telescopic hydraulic cylinder 9, and the lower extrusion plate 13 is fixedly installed on the free end of the telescopic hydraulic cylinder 9. The rear end of the frame 11 is fixedly installed with an extension groove 10 that carries the upper extrusion plate 15, and the extension groove 10 is aligned with the slide groove 8. Through such an arrangement, a relatively simple extrusion device that allows the upper extrusion plate 15 and the lower extrusion plate 13 to move toward each other can be provided.

[0038] An upper protrusion 23 covering the back plate of the automobile brake lining is provided below the upper extrusion plate 15, and a lower protrusion 24 slidably connected to the inside of the inner shell 124 is provided above the lower extrusion plate 13. The edge of the lower protrusion 24 is in contact with the inner edge of the bottom of the inner shell 124. This arrangement ensures that the automobile brake lining can be squeezed.

[0039] The cleaning mechanism 3 includes a horizontal moving mechanism 31 that moves along the guide rail 2, and a vertical moving mechanism 32 is fixedly installed at the bottom end of the horizontal moving mechanism 31, and a connecting plate 33 is fixedly installed at the bottom end of the vertical moving mechanism 32, and a blowing mechanism 34 is fixedly installed on the connecting plate 33, and the output end of the blowing mechanism 34 is connected to and penetrated by a blowing pipe 35, and a dust suction mechanism 36 is fixedly installed on the connecting plate 33, and the output end of the dust suction mechanism 36 is connected to and penetrated by a dust suction pipe 37, and a spray mechanism 38 is fixedly installed on the connecting plate 33, and the output end of the spray mechanism 38 is connected to and penetrated by a spray pipe 39. First, a high-speed airflow is rushed to the mold cavity 122 through the blowing mechanism 34 to make the residual waste residue fall off, and then the waste residue is sucked away through the dust suction pipe 37, and finally the release agent is sprayed again, so as to avoid the residual waste residue affecting the demolding.

[0040] The dust suction pipe 37 is located below the blowing pipe 35, and the spray pipe 39 is located above the blowing pipe 35. The dust suction pipe 37 needs to contact the bottom wall of the mold cavity 122 and is therefore set at the lowest position. The spray pipe 39 can spray from a high position because the release agent sprayed can flow.

[0041] The dust suction pipe 37 , the blowing pipe 35 and the spraying pipe 39 are all provided with a plurality of branch pipes, and the number of the branch pipes is the same as the number of the bearing slots 121 . With such an arrangement, all the mold cavities 122 can be cleaned.

[0042] When in use, the friction material is placed inside the inner shell 124, and the back plate is placed at the top of the inner shell 124. The heating tube 125 is heated and the upper extrusion plate 15 and the lower extrusion plate 13 are extruded to achieve hot pressing of the automobile brake lining. After the hot pressing is completed, the heating tube 125 stops heating, and the extension tube 5 supplies air to the cooling channel 126 through an external air supply mechanism to accelerate heat discharge, thereby cooling the automobile brake lining, thereby avoiding high temperature causing bonding and demolding failure during demolding.

[0043] After use, the upper extrusion plate 15 is reset and moved to the top of the extension groove 10 under the action of external force. The cleaning mechanism 3 first uses high-speed airflow to flush the inner shell 124 to remove the residue, and then transfers the residue to the outside of the inner shell 124 through the dust suction mechanism 36. Finally, the release agent is sprayed through the spray pipe 39 to prevent the residue from affecting the demolding.

[0044] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0045] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hot pressing die for automobile brake linings that is easy to demould, comprising a constant ratio hot pressing machine (1), characterized in that: The isometric hot press (1) comprises a frame (11), a mold placement frame (12) is fixedly installed in the middle of the frame (11), an upper extrusion plate (15) and a lower extrusion plate (13) which can move towards each other are respectively provided on the upper and lower sides of the frame (11) and the mold placement frame (12), wherein the upper extrusion plate (15) can slide back and forth, a notch (14) is provided above the frame (11), a guide rail (2) is provided above the isometric hot press (1), and a cleaning mechanism (3) which can be slidably connected above the guide rail (2) and can clean the mold placement frame (12) through the notch; A bearing groove (121) is provided on the surface of the mold placement frame (12), and the interior of the bearing groove (121) is fixedly connected to the mold cavity (122) via a countersunk bolt (128); The mold cavity (122) is divided into an outer shell (123) and an inner shell (124). The inner shell (124) is sleeved inside the outer shell (123) from the bottom of the outer shell (123). The lower extrusion plate (13) partially extends into the interior of the inner shell (124) and is slidably connected to the inner shell (124). The outer surface of the inner shell (124) is fixedly wound with a spirally distributed heating tube (125). Both ends of the heating tube (125) extend to the outer surface of the outer shell (123). The outer surface of the inner shell (124) is fixedly wound with a spirally distributed heating tube (125). A cooling channel (126) is wound in the gap of the heating tube (125) on the surface, the inlet ends of the multiple groups of cooling channels (126) are connected through a connecting block (127), another connecting block (127) is connected to the outlet ends of the multiple groups of cooling channels (126), one end of the connecting block (127) is connected to and penetrated by a connecting pipe (129), the connecting pipe (129) extends to the outer surface of the outer shell (123), and the gap between the outer shell (123) and the inner shell (124) is filled with heat conductive material; Both ends of the heating tube (125) are provided with metal sheets (21), the outer ring of the metal sheet (21) is provided with an insulating layer, the metal sheet (21) and the insulating layer are embedded in the interior of the housing (123), and the inner ring of the connecting tube (129) is embedded with a sealing ring (22); Both sides of the mold placement frame (12) are provided with plug-in slots connected to and through the bearing slot (121), the interior of the plug-in slot is slidably connected to a sliding slider (4), the middle of the sliding slider (4) is fixedly connected to an extension tube (5) plugged into the interior of the sealing ring (22), and a wire (6) with a contact end provided at one end, and the wire (6) is in contact with the metal sheet (21); The four corners above the frame (11) are fixedly mounted with telescopic sleeves (7) extending downward, the free ends of the telescopic sleeves (7) are fixedly connected via a U-shaped slide groove (8), the upper extrusion plate (15) is slidably connected inside the slide groove (8), the bottom end of the frame (11) is fixedly mounted with a telescopic hydraulic cylinder (9) extending upward, the lower extrusion plate (13) is fixedly mounted on the free end of the telescopic hydraulic cylinder (9), the rear end of the frame (11) is fixedly mounted with an extension groove (10) supporting the upper extrusion plate (15), and the extension groove (10) is aligned with the slide groove (8).

2. The automobile brake lining hot pressing mold with easy demoulding according to claim 1, characterized in that: A cavity for accommodating the sliding of a vehicle brake lining back plate is provided above the interior of the outer shell (123), and a cavity for accommodating the sliding of a lower extrusion plate (13) is provided above the interior of the inner shell (124). An angle of three degrees is set between the two cavities, which are opened upward from the bottom end.

3. The automobile brake lining hot pressing mold with easy demoulding according to claim 2, characterized in that: An upper protrusion (23) covering the back plate of the automobile brake lining is provided below the upper extrusion plate (15), and a lower protrusion (24) slidably connected to the inside of the inner shell (124) is provided above the lower extrusion plate (13), and the edge of the lower protrusion (24) is in contact with the inner edge of the lower side of the inner shell (124).

4. The automobile brake lining hot pressing mold with easy demoulding according to claim 3, characterized in that: The cleaning mechanism (3) comprises a horizontal moving mechanism (31) that moves along the guide rail (2); a vertical moving mechanism (32) is fixedly mounted on the bottom end of the horizontal moving mechanism (31); a connecting plate (33) is fixedly mounted on the bottom end of the vertical moving mechanism (32); a blowing mechanism (34) is fixedly mounted on the connecting plate (33); an output end of the blowing mechanism (34) is connected to and penetrated by a blowing pipe (35); a dust collecting mechanism (36) is fixedly mounted on the connecting plate (33); an output end of the dust collecting mechanism (36) is connected to and penetrated by a dust collecting pipe (37); a spraying mechanism (38) is fixedly mounted on the connecting plate (33); an output end of the spraying mechanism (38) is connected to and penetrated by a spraying pipe (39).

5. The automobile brake lining hot pressing mold with easy demoulding according to claim 4, characterized in that: The dust suction pipe (37) is located below the blowing pipe (35), and the spray pipe (39) is located above the blowing pipe (35).

6. The automobile brake lining hot pressing mold with easy demoulding according to claim 5, characterized in that: The dust suction pipe (37), the blowing pipe (35) and the spray pipe (39) are all provided with a plurality of branch pipes, and the number of the branch pipes is the same as the number of the bearing slots (121).

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