Automobile sound-absorbing cotton hot-pressing device

Abstract

The utility model relates to the technical field of sound-absorbing cotton production, in particular to an automobile sound-absorbing cotton hot-pressing device which comprises supporting legs, a first supporting plate, a second supporting plate, a sliding supporting plate, a hydraulic cylinder, a hot-pressing mechanism and a limiting mechanism, the supporting legs are arranged at the bottom of a box body, and the limiting mechanism comprises a polished shaft and a linear bearing. The optical shaft is arranged at the top of the first supporting plate, the linear bearing is arranged on the sliding supporting plate, the optical shaft penetrates through the linear bearing and is in sliding connection with the linear bearing, the second supporting plate is arranged at the end, away from the first supporting plate, of the optical shaft, and the hydraulic cylinder is arranged at the top of the second supporting plate. An output shaft of the hydraulic cylinder penetrates through the second supporting plate to be fixedly connected with the sliding supporting plate, and the hot pressing mechanism is arranged on the sliding supporting plate. The limiting mechanism is arranged, so that the edge of the second supporting plate can be prevented from tilting when the device is subjected to hot pressing operation, and all parts of the sound-absorbing cotton are stressed more uniformly.

Description

Technical Field

[0001] The present application relates to the technical field of sound-absorbing cotton production, and in particular to a hot pressing device for automobile sound-absorbing cotton. Background Art

[0002] Sound-absorbing cotton is a crucial component of automotive noise reduction and muffler components. It's a man-made inorganic fiber made primarily from natural minerals like quartz sand, limestone, and dolomite. It's melted into glass with chemical raw materials like soda ash and borax. Once molten, it's blown into fine, flocculent fibers. These fibers intersect and entwine in a three-dimensional pattern, creating numerous tiny gaps. Automotive sound-absorbing cotton undergoes a heat-pressing process during production.

[0003] At present, a Chinese utility model patent application with a publication date of May 24, 2024 and publication number CN220995205U provides a car sound-absorbing cotton pressing device, including a sound-absorbing cotton processing table, an L-shaped bracket beam is fixedly installed at the midpoint of the top side of the sound-absorbing cotton processing table, a cotton pressing cylinder is fixedly installed on the horizontal top of the L-shaped bracket beam, and a cotton pressing plate is fixedly installed on the bottom end of the piston shaft of the cotton pressing cylinder, the cotton pressing plate is provided with a trimming mechanism corresponding to the four sides, and a cleaning mechanism is provided on the top side of the sound-absorbing cotton processing table, and a side material collection frame is fixedly installed on the outer wall of the end face of the sound-absorbing cotton processing table. The car sound-absorbing cotton pressing device can integrate the pressing and trimming of car sound-absorbing cotton, which can improve the processing efficiency of car sound-absorbing cotton compared with the traditional separate pressing and cutting operations of car sound-absorbing cotton.

[0004] In the related art, a car sound-absorbing cotton pressing device is used. Since the top of the cotton pressing plate is only subjected to the pressure of the piston shaft connected to the center of its top, the edge of the cotton pressing plate away from the center point is prone to curling up when pressing the sound-absorbing cotton, resulting in uneven pressure of the cotton pressing plate on the sound-absorbing cotton, which reduces the quality of the finished sound-absorbing cotton. Utility Model Content

[0005] The embodiment of the present application provides a device for hot pressing automobile sound-absorbing cotton, which can improve the technical problem in the related art that the edge of the cotton pressing plate is easily warped when pressing the sound-absorbing cotton.

[0006] An embodiment of the present application provides a hot pressing device for automobile sound-absorbing cotton, including a support leg, a first support plate, a second support plate, a sliding support plate, a hydraulic cylinder, a hot pressing mechanism and a limiting mechanism, wherein the support leg is arranged at the bottom of the first support plate, the limiting mechanism includes an optical axis and a linear bearing, the optical axis is arranged at the top of the first support plate, the linear bearing is arranged on the sliding support plate, the optical axis passes through the linear bearing and is slidably connected to the linear bearing, the second support plate is arranged on the end of the optical axis away from the first support plate, the hydraulic cylinder is arranged on the top of the second support plate, the output shaft of the hydraulic cylinder passes through the second support plate and is fixedly connected to the sliding support plate, and the hot pressing mechanism is arranged on the sliding support plate.

[0007] The above-mentioned technical solution in the embodiment of the present application has at least the following technical effects: when the machine is working, the output shaft of the hydraulic cylinder pushes the sliding support plate and the hot pressing mechanism downward. When the hot pressing mechanism hot presses the sound-absorbing cotton, the sound-absorbing cotton will exert a reverse force on the hot pressing mechanism and the sliding support plate. The optical axis and the linear bearing will offset the reverse force exerted on the edge of the sliding support plate, preventing the edge of the sliding support plate from warping up and causing uneven pressure applied to different parts of the sound-absorbing cotton by the hot pressing mechanism, thereby improving the product quality of the finished sound-absorbing cotton.

[0008] The automotive sound-absorbing cotton hot pressing device provided in the embodiment of the present application can prevent the edge of the second support plate from warping when the device performs a hot pressing operation, so that the various parts of the sound-absorbing cotton are subjected to more uniform force.

[0009] In some embodiments, a sealing ring is sleeved on the outer circumference of the linear bearing, and the sealing ring is slidably connected to the optical axis.

[0010] In some embodiments, the hot pressing mechanism includes an upper pressing plate and a die ring, a lower pressing plate is provided on the top of the first support plate, and a plurality of first heating tubes are provided inside the lower pressing plate and inside the second support plate.

[0011] In some embodiments, a plurality of threaded holes are provided on the second support plate and the upper pressing plate, and the upper pressing plate is fixedly connected to the second support plate by fixing bolts.

[0012] In some embodiments, a protective net is provided on the first support plate, one end of the protective net is welded to the first support plate, and the other end of the protective net is welded to the second support plate.

[0013] In some embodiments, a grating gate receiving end is provided on the first support plate, and a grating gate output end is provided on the second support plate, and the grating gate receiving end is connected to the hydraulic cylinder electrical signal.

[0014] In some embodiments, a preheating mechanism is further provided on the first support plate, and the preheating mechanism includes a box body, a grid plate, and a second heating tube. A feeding port is opened on the box body, and the grid plate and the second heating tube are both arranged inside the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 The overall structure of a car sound-absorbing cotton hot pressing device provided in the embodiment of the present application is schematically shown. Figure 1 ;

[0017] Figure 2 A cross-sectional view of a hot pressing device for automobile sound-absorbing cotton provided in an embodiment of the present application;

[0018] Figure 3 for Figure 2 A magnified view of part A;

[0019] Figure 4 The overall structure of a car sound-absorbing cotton hot pressing device provided in the embodiment of the present application is schematically shown. Figure 2 ;

[0020] Figure 5 for Figure 4 A magnified view of part B;

[0021] Figure 6 This is a cross-sectional view of the preheating mechanism.

[0022] Among them, the reference numerals in the figures are:

[0023] 1. Support legs; 2. First support plate; 21. Lower pressure plate; 211. First heating tube; 22. Protective net; 23. Grating door receiving end; 3. Second support plate; 31. Grating door output end; 4. Sliding support plate; 5. Hydraulic cylinder; 61. Upper pressure plate; 611. Fixing bolt; 62. Die ring; 7. Limiting mechanism; 71. Optical axis; 72. Linear bearing; 721. Sealing ring; 8. Preheating mechanism; 81. Box; 811. Feed port; 82. Grating plate; 83. Second heating tube. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the accompanying drawings are intended to cover non-exclusive inclusions.

[0026] Sound-absorbing cotton is a crucial component of automotive noise reduction and muffler components. It's a man-made inorganic fiber made primarily from natural minerals like quartz sand, limestone, and dolomite. It's melted into glass with chemical raw materials like soda ash and borax. Once molten, it's blown into fine, flocculent fibers. These fibers intersect and entwine in a three-dimensional pattern, creating numerous tiny gaps. Automotive sound-absorbing cotton undergoes a heat-pressing process during production.

[0027] In the related art, a car sound-absorbing cotton pressing device is used. Since the top of the cotton pressing plate is only subjected to the pressure of the piston shaft connected to the center of its top, the edge of the cotton pressing plate away from the center point is prone to curling up when pressing the sound-absorbing cotton, resulting in uneven pressure of the cotton pressing plate on the sound-absorbing cotton, which reduces the quality of the finished sound-absorbing cotton.

[0028] Based on this, in order to improve the problem in the related art that the edge of the cotton pressing plate is easily warped when pressing the sound-absorbing cotton, the embodiment of the present application provides the following solution.

[0029] Please also refer to Figures 1 to 5 The embodiment of the present application provides a hot pressing device for automobile sound-absorbing cotton, including a support leg 1, a first support plate 2, a second support plate 3, a sliding support plate 4, a hydraulic cylinder 5, a hot pressing mechanism and a limiting mechanism 7.

[0030] Please also refer to Figures 1 to 5, the support leg 1 is arranged at the bottom of the first support plate 2, the limiting mechanism 7 includes an optical axis 71 and a linear bearing 72, the optical axis 71 is arranged at the top of the first support plate 2, the linear bearing 72 is arranged on the sliding support plate 4, the optical axis 71 passes through the linear bearing 72 and is slidably connected with the linear bearing 72, and a sealing ring 721 is sleeved on the outer circumference of the linear bearing 72, and the sealing ring 721 is slidably connected with the optical axis 71, the second support plate 3 is arranged on the end of the optical axis 71 away from the first support plate 2, the hydraulic cylinder 5 is arranged on the top of the second support plate 3, and the output shaft of the hydraulic cylinder 5 passes through the second support plate 3 and is fixedly connected to the sliding support plate 4 The hot pressing mechanism includes an upper pressing plate 61 and a die ring 62. A lower pressing plate 21 is provided on the top of the first support plate 2. A plurality of first heating tubes 211 are provided inside the lower pressing plate 21 and inside the second support plate 3. A plurality of threaded holes are provided on the second support plate 3 and the upper pressing plate 61. The upper pressing plate 61 is fixedly connected to the second support plate 3 by fixing bolts 611. A preheating mechanism 8 is also provided on the first support plate 2. The preheating mechanism 8 includes a box body 81, a grid plate 82, and a second heating tube 83. A feeding port 811 is provided on the box body 81. The grid plate 82 and the second heating tube 83 are both arranged inside the box body 81.

[0031] From the above, it can be seen that the embodiment of the present application provides a car sound-absorbing cotton hot pressing device. Since the sound-absorbing cotton hot pressing needs to be carried out at a certain temperature, the staff can first turn on the first heating tube 211 and the second heating tube 83. The first heating tube 211 heats the lower pressing plate 21, the second support plate 3, the upper pressing plate 61 and the die ring 62 to raise them to a certain temperature. At the same time, the second heating tube 83 heats the air inside the box 81 to a certain temperature. The staff can first place a single piece of blank from the feeding port 811 onto the grid 82. The hot air inside the box 81 will preheat the blank, which can prevent the blank from being heated due to the temperature of each part during hot pressing. Unevenness leads to reduced quality of finished sound-absorbing cotton; after preheating the blank, the staff can take the blank out of the box 81 and put the new blank into the box 81 for preheating, and then place the preheated blank on the lower pressure plate 21 and start the hydraulic cylinder 5. The output shaft of the hydraulic cylinder 5 pushes the sliding support plate 4, the upper pressure plate 61 and the die ring 62 downward. After the die ring 62 and the upper pressure plate 61 contact the blank, the upper pressure plate 61 and the lower pressure plate 21 apply pressure to the blank and heat the blank. At this time, the sound-absorbing cotton will apply a reverse force to the upper pressure plate 61, and the upper pressure plate 61 will apply a reverse force to the sliding support plate 4. The optical axis 71 and the linear bearing 72 will offset the reverse force exerted on the edge of the sliding support plate 4, thereby preventing the edges of the sliding support plate 4 and the upper pressing plate 61 from warping, resulting in uneven pressure exerted by the upper pressing plate 61 on various parts of the sound-absorbing cotton, which can improve the product quality of the finished sound-absorbing cotton. The die ring 62 applies greater pressure to the part of the blank that contacts it, thereby forming the edge of the finished sound-absorbing cotton on the blank, thereby completing the hot pressing of the blank. Then the output shaft of the hydraulic cylinder 5 drives the sliding support plate 4 to move back to the initial position. The staff will take out the hot-pressed blank and tear off the finished sound-absorbing cotton along the edge to complete the production of a piece of sound-absorbing cotton. Then the above steps can be repeated. Production is carried out continuously; since the sound-absorbing cotton is made of various fine fibers, some fibers will float into the air and be adsorbed on the optical axis 71 when the device is working. The sealing ring 721 can prevent the fibers from being drawn into the interior of the linear bearing 72, thereby preventing the interior of the linear bearing 72 from being clogged by fibers and making the linear bearing 72 unable to move; different upper pressure plates 61 are required when producing sound-absorbing cotton of different specifications. When needed, the staff can unscrew the fixing bolt 611 from the threaded hole, remove the upper pressure plate 61 and replace the upper pressure plate 61 to be used, and then screw the fixing bolt 611 back into the threaded hole to complete the replacement of the upper pressure plate 61, which can make the use of the device more flexible.

[0032] In some embodiments, see Figure 1A protective net 22 is provided on the first support plate 2, one end of the protective net 22 is welded to the first support plate 2, and the other end of the protective net 22 is welded to the second support plate 3. A grating gate receiving end 23 is also provided on the first support plate 2, and a grating gate output end 31 is provided on the second support plate 3. The grating gate receiving end 23 is connected to the hydraulic cylinder 5 with an electrical signal.

[0033] With such arrangement, since the device is somewhat dangerous when working, the protective net 22 can prevent the staff from accidentally touching the internal components of the device from the side of the device; the grating door output end 31 will emit a laser signal to the grating door receiving end 23. When a foreign object or the staff's arm is extended into the device from the outside, the laser signal will be blocked, and the grating door receiving end 23 will send a signal to the hydraulic press to stop the hydraulic press from moving, thereby preventing the device from causing harm to the staff due to operational errors of the staff, and reducing the safety hazards of the device.

[0034] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A hot pressing device for automobile sound-absorbing cotton, characterized by: The invention comprises a support leg (1), a first support plate (2), a second support plate (3), a sliding support plate (4), a hydraulic cylinder (5), a hot pressing mechanism and a limiting mechanism (7), wherein the support leg (1) is arranged at the bottom of the first support plate (2), the limiting mechanism (7) comprises an optical axis (71) and a linear bearing (72), the optical axis (71) is arranged at the top of the first support plate (2), the linear bearing (72) is arranged on the sliding support plate (4), the optical axis (71) passes through the linear bearing (72) and is slidably connected to the linear bearing (72), the second support plate (3) is arranged on an end of the optical axis (71) away from the first support plate (2), the hydraulic cylinder (5) is arranged at the top of the second support plate (3), the output shaft of the hydraulic cylinder (5) passes through the second support plate (3) and is fixedly connected to the sliding support plate (4), and the hot pressing mechanism is arranged on the sliding support plate (4).

2. The hot pressing device for automobile sound-absorbing cotton according to claim 1, characterized in that: A sealing ring (721) is sleeved on the outer peripheral surface of the linear bearing (72), and the sealing ring (721) is slidably connected to the optical axis (71).

3. The hot pressing device for automobile sound-absorbing cotton according to claim 1, characterized in that: The hot pressing mechanism comprises an upper pressing plate (61) and a die ring (62); a lower pressing plate (21) is provided on the top of the first support plate (2); and a plurality of first heating tubes (211) are provided inside the lower pressing plate (21) and inside the second support plate (3).

4. The hot pressing device for automobile sound-absorbing cotton according to claim 3, characterized in that: A plurality of threaded holes are provided on the second support plate (3) and the upper pressing plate (61), and the upper pressing plate (61) is fixedly connected to the second support plate (3) via fixing bolts (611).

5. A hot pressing device for automobile sound-absorbing cotton according to any one of claims 1 to 4, characterized in that: A protective net (22) is provided on the first support plate (2), one end of the protective net (22) is welded to the first support plate (2), and the other end of the protective net (22) is welded to the second support plate (3).

6. The hot pressing device for automobile sound-absorbing cotton according to claim 5, characterized in that: The first support plate (2) is provided with a grating gate receiving end (23), and the second support plate (3) is provided with a grating gate output end (31). The grating gate receiving end (23) is electrically connected to the hydraulic cylinder (5).

7. The hot pressing device for automobile sound-absorbing cotton according to claim 6, characterized in that: A preheating mechanism (8) is also provided on the first support plate (2), and the preheating mechanism (8) comprises a box (81), a grid plate (82), and a second heating tube (83). A feeding port (811) is provided on the box (81), and the grid plate (82) and the second heating tube (83) are both arranged inside the box (81).

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