Bulking machine for special glass fiber silencing cotton for automobile

Abstract

The utility model relates to the technical field of bulking machines, in particular to a bulking machine for glass fiber silencing cotton special for an automobile. According to the technical scheme, the device comprises a damping bottom table, and a supporting column is fixedly mounted at the top of the damping bottom table; the bulking assembly comprises a bulking pipe, a heating cylinder, a pushing screw rod and an overturning plate, the end part of the bulking pipe is fixedly connected with the supporting column, the heating cylinder is fixedly mounted on the inner wall of the bulking pipe, the two ends of the pushing screw rod are rotationally connected with the bulking pipe, and the overturning plate is fixedly mounted on the inner wall of the bulking pipe. The glass fiber noise reduction cotton is pushed and conveyed through the pushing screw rod, the glass fiber noise reduction cotton moves to the turning plate and moves along the inner arc face of the turning plate, after the glass fiber noise reduction cotton moves to the tail end of the turning plate, turning of the glass fiber noise reduction cotton is completed, the positions of the outer layer and the inner layer of the glass fiber noise reduction cotton are exchanged, and noise reduction is achieved. And the inner layer of the glass fiber silencing cotton is prevented from being expanded due to low heat.

Description

Technical Field

[0001] The utility model relates to the technical field of puffing machines, in particular to a puffing machine for glass fiber sound-absorbing cotton specially used for automobiles. Background Art

[0002] Glass fiber silencer cotton is an insulating material composed of glass fiber filaments. It has excellent heat insulation, sound insulation and fire resistance. It is often used in automobile silencers. The glass fiber silencer cotton is expanded by an expander. The expander expands the internal gas of the material by heating and pressurizing, thereby increasing its volume and fluffiness. The heat insulation performance and sound absorption effect of the expanded glass fiber silencer cotton will be improved.

[0003] In the prior art, the extruder drives the screw rod to rotate through a motor to continuously push the glass fiber silencer cotton into the extruder, and the glass fiber silencer cotton passes through the heating layer and the pressurizing layer of the extruder to be expanded.

[0004] However, when this type of expander expands the glass fiber silencer cotton, only the outermost layer of the glass fiber silencer cotton can contact the heating layer. Since the glass fiber silencer cotton has good heat insulation performance, the heat received by the inner layer of the glass fiber silencer cotton will be blocked by the outermost layer of the glass fiber silencer cotton, affecting the expansion of the glass fiber silencer cotton. Utility Model Content

[0005] The utility model aims to solve the problem in the background technology that the outermost layer of glass fiber silencer cotton blocks the heating of the inner layer of glass fiber silencer cotton, and proposes an expander for glass fiber silencer cotton specially used for automobiles.

[0006] The technical solution of the utility model is: an expander for automobile-specific glass fiber sound-absorbing cotton, comprising a shock-absorbing base, a support column is fixedly installed on the top of the shock-absorbing base, and a feeding funnel is fixedly installed on the top of the support column;

[0007] The expanding assembly comprises an expanding tube, a heating cylinder, a pushing screw rod and a flip panel, wherein the end of the expanding tube is fixedly connected to the supporting column, the heating cylinder is fixedly installed on the inner wall of the expanding tube, the two ends of the pushing screw rod are rotatably connected to the expanding tube, and the flip panel is fixedly installed on the inner wall of the expanding tube;

[0008] Glass fiber sound-absorbing cotton is placed inside the feeding funnel, the feeding funnel is communicated with the expansion tube, and the bottom of the expansion tube is fixedly connected to the shock-absorbing base.

[0009] Optionally, the flap panel adopts a spiral structure, the opening of the flap panel faces the feeding funnel, and the flap panel is abutted against the pushing spiral rod.

[0010] Optionally, a plurality of the flap panels are provided, and the plurality of flap panels are equidistantly distributed in a ring shape around the pushing screw rod, and a support block is fixedly mounted on the outer arc surface of the flap panel, and the support block is fixedly connected to the expansion tube.

[0011] Optionally, a feed inlet is provided on the expanding tube, and the expanding tube is connected to a feed hopper through the feed inlet.

[0012] Optionally, the pushing screw rod comprises a pushing shaft and a spiral blade, the spiral blade is fixedly installed on the rod body of the pushing shaft, and both ends of the pushing shaft are rotatably connected to the expanding tube.

[0013] Optionally, the diameter of the pushing shaft gradually decreases from right to left, and a puffing zone is formed between the pushing shaft and the puffing tube.

[0014] Optionally, the pitch of the spiral blade gradually increases from right to left, and the flap panel is located in the middle of the spiral blade.

[0015] Optionally, a motor is fixedly installed at the end of the expanding tube, and the motor is fixedly connected to the pushing shaft through a rotating shaft. A material receiving cylinder is fixedly installed on the top of the shock-absorbing base, and the other end of the expanding tube is connected to the material receiving cylinder.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model pushes and transports the glass fiber sound-absorbing cotton by a pushing spiral rod. The glass fiber sound-absorbing cotton moves to the flip panel and moves along the inner arc surface thereof. When the glass fiber sound-absorbing cotton moves to the end of the flip panel, the flipping of the glass fiber sound-absorbing cotton is completed, and the outer layer and the inner layer of the glass fiber sound-absorbing cotton are exchanged to avoid the inner layer of the glass fiber sound-absorbing cotton being expanded due to the low heat caused by the heat insulation effect of the glass fiber sound-absorbing cotton.

[0018] Furthermore, by gradually reducing the diameter of the push shaft and gradually increasing the pitch of the spiral blade, the volume of the expanding zone between the push shaft, the spiral blade and the expanding tube is increased to accommodate the expansion of the glass fiber silencer cotton, thereby avoiding excessive interaction force between the expanded glass fiber silencer cotton and the spiral blade, causing the glass fiber silencer cotton to rotate with the spiral blade and affecting the discharge speed of the glass fiber silencer cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of an embodiment of the utility model is given;

[0020] Figure 2 A schematic cross-sectional view of an expansion tube structure of an embodiment of the utility model is given;

[0021] Figure 3 Given Figure 2 A part of the A panel structure is enlarged;

[0022] Figure 4 A right side cross-sectional schematic diagram of a push shaft structure of an embodiment of the utility model is given.

[0023] Figure numerals: 1. shock-absorbing base; 2. supporting column; 3. expanding assembly; 31. expanding tube; 32. heating cylinder; 33. feeding port; 34. pushing screw rod; 341. pushing shaft; 342. spiral blade; 35. flip panel; 36. supporting block; 4. feeding funnel; 5. motor; 6. collecting cylinder. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example 1

[0030] This embodiment provides a puffing machine for glass fiber silencer cotton for automobiles, such as Figure 1 As shown, it includes a shock-absorbing base 1, a support column 2 is fixedly installed on the top of the shock-absorbing base 1, a feeding funnel 4 is fixedly installed on the top of the support column 2, glass fiber sound-absorbing cotton is placed inside the feeding funnel 4, a collecting barrel 6 is fixedly installed on the top of the shock-absorbing base 1, and an expansion component 3 is fixedly installed on the top of the shock-absorbing base 1 and between the support column 2 and the collecting barrel 6. The shock-absorbing base 1, the support column 2 and the collecting barrel 6 jointly support the expansion component 3, the feeding funnel 4 is used to feed the material into the expansion component 3, and the collecting barrel 6 is used to discharge the material and collect the glass fiber sound-absorbing cotton discharged from the expansion component 3.

[0031] like Figure 1 and 2 As shown, a puffing assembly 3 is fixedly installed on the top of the shock-absorbing base 1, and the puffing assembly 3 includes a puffing tube 31, a heating tube 32, a pushing screw rod 34 and a flip panel 35. The bottom of the puffing tube 31 is fixedly connected to the shock-absorbing base 1, and both ends of the puffing tube 31 are respectively fixedly connected to the supporting column 2 and the receiving tube 6. A feeding port 33 is opened on the puffing tube 31, and the puffing tube 31 is connected with the feeding funnel 4 through the feeding port 33. The glass fiber silencing cotton in the feeding funnel 4 is transported to the inside of the puffing tube 31.

[0032] The inner wall of the expansion tube 31 is fixedly installed with a heating cylinder 32, and both ends of the pushing screw rod 34 are rotatably connected to the expansion tube 31. The pushing screw rod 34 rotates to continuously push and transport the glass fiber silencer cotton, and the heating cylinder 32 heats the glass fiber silencer cotton to make it expand.

[0033] like Figure 3 and 4 As shown, a flap panel 35 is fixedly installed on the inner wall of the expanding tube 31. The flap panel 35 adopts a spiral structure. The opening of the flap panel 35 faces the feeding funnel 4. The flap panel 35 is close to the pushing screw rod 34. A plurality of flap panels 35 are provided. The plurality of flap panels 35 are equidistantly distributed in a ring around the pushing screw rod 34. The pushing screw rod 34 pushes and transports the glass fiber sound-absorbing cotton. The glass fiber sound-absorbing cotton moves toward the flap panel 35. The glass fiber sound-absorbing cotton is turned over by the flap panel 35. A supporting block 36 is fixedly installed on the outer arc surface of the flap panel 35. The supporting block 36 is fixedly connected to the expanding tube 31.

[0034] In this embodiment, the glass fiber sound-absorbing cotton is pushed and transported by the pushing screw rod 34, and the glass fiber sound-absorbing cotton is heated and expanded by the heating cylinder 32. The glass fiber sound-absorbing cotton moves to the flip panel 35 and moves along its inner arc surface. When the glass fiber sound-absorbing cotton moves to the end of the flip panel 35, the glass fiber sound-absorbing cotton is flipped over, and the outer layer and the inner layer of the glass fiber sound-absorbing cotton are exchanged to avoid the inner layer of the glass fiber sound-absorbing cotton being affected by heat due to the heat insulation effect of the glass fiber sound-absorbing cotton, which affects the expansion of the glass fiber sound-absorbing cotton.

[0035] Example 2

[0036] Based on Example 1, this example proposes a puffing machine for automobile-specific glass fiber sound-absorbing cotton, such as Figure 3 As shown, the pushing screw rod 34 includes a pushing shaft 341 and a spiral blade 342 . The spiral blade 342 is fixedly installed on the rod body of the pushing shaft 341 . Both ends of the pushing shaft 341 are rotatably connected to the expanding tube 31 .

[0037] like Figure 1 As shown, a motor 5 is fixedly installed at the end of the expansion tube 31, and the motor 5 is fixedly connected to the push shaft 341 through a rotating shaft. The motor 5 drives the push shaft 341 to rotate, so that the spiral blade 342 rotates to push and transport the glass fiber silencer cotton.

[0038] like Figure 3 As shown, the diameter of the push shaft 341 gradually decreases from right to left, and an expansion zone is formed between the push shaft 341 and the expansion tube 31. The pitch of the spiral blade 342 gradually increases from right to left, and the flap 35 is located in the middle of the spiral blade 342.

[0039] As the glass fiber silencer cotton expands, the volume of the glass fiber silencer cotton gradually increases, and the diameter of the push shaft 341 gradually decreases from right to left to increase the distance between the push shaft 341 and the expansion tube 31, that is, to increase the longitudinal expansion space of the glass fiber silencer cotton, and the pitch of the spiral blade 342 gradually increases from right to left, that is, to increase the lateral expansion space of the glass fiber silencer cotton.

[0040] In this embodiment, the diameter of the push shaft 341 gradually decreases from right to left to increase the distance between the push shaft 341 and the expanding tube 31, and the pitch of the spiral leaf 342 gradually increases from right to left to increase the volume of the expanding zone between the push shaft 341, the spiral leaf 342 and the expanding tube 31 to accommodate the expansion of the glass fiber silencer cotton, so as to avoid excessive interaction force between the glass fiber silencer cotton in the expanding zone and the spiral leaf 342 due to the unchanged volume of the expanding zone after the glass fiber silencer cotton expands, causing the glass fiber silencer cotton to rotate together with the spiral leaf 342, thereby affecting the discharge speed of the glass fiber silencer cotton.

[0041] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A puffing machine for automobile-specific glass fiber silencer cotton, characterized in that: include: A shock-absorbing base platform (1), a support column (2) being fixedly mounted on the top of the shock-absorbing base platform (1), and a feed hopper (4) being fixedly mounted on the top of the support column (2); The expanding assembly (3) comprises an expanding tube (31), a heating cylinder (32), a pushing screw rod (34) and a flip panel (35); the end of the expanding tube (31) is fixedly connected to the support column (2); the heating cylinder (32) is fixedly installed on the inner wall of the expanding tube (31); the two ends of the pushing screw rod (34) are rotatably connected to the expanding tube (31); and the flip panel (35) is fixedly installed on the inner wall of the expanding tube (31); Glass fiber sound-absorbing cotton is placed inside the feeding funnel (4), the feeding funnel (4) is connected to the expansion tube (31), and the bottom of the expansion tube (31) is fixedly connected to the shock-absorbing base (1).

2. The expander of the automobile-specific glass fiber sound-absorbing cotton according to claim 1, characterized in that: The flap panel (35) has a spiral structure, the opening of the flap panel (35) faces the feeding funnel (4), and the flap panel (35) is abutted against the pushing spiral rod (34).

3. The expander of the automobile-specific glass fiber sound-absorbing cotton according to claim 1, characterized in that: A plurality of the flip panels (35) are provided, and the plurality of flip panels (35) are distributed in an annular manner and at equal intervals around the pushing screw rod (34). A support block (36) is fixedly mounted on the outer arc surface of the flip panel (35), and the support block (36) is fixedly connected to the expansion tube (31).

4. The expander of the automobile-specific glass fiber sound-absorbing cotton according to claim 1, characterized in that: The expansion tube (31) is provided with a feed inlet (33), and the expansion tube (31) is connected to the feed hopper (4) through the feed inlet (33).

5. The expander of the automobile-specific glass fiber sound-absorbing cotton according to claim 1, characterized in that: The pushing screw rod (34) comprises a pushing shaft (341) and a spiral blade (342); the spiral blade (342) is fixedly mounted on the shaft of the pushing shaft (341); and both ends of the pushing shaft (341) are rotatably connected to the expansion tube (31).

6. The expander of the automobile-specific glass fiber sound-absorbing cotton according to claim 5, characterized in that: The diameter of the pushing shaft (341) gradually decreases from right to left, and a puffing zone is formed between the pushing shaft (341) and the puffing tube (31).

7. The expander of the automobile-specific glass fiber sound-absorbing cotton according to claim 6, characterized in that: The pitch of the spiral blade (342) gradually increases from right to left, and the flap (35) is located in the middle of the spiral blade (342).

8. The expander of the automobile-specific glass fiber sound-absorbing cotton according to claim 5, characterized in that: A motor (5) is fixedly mounted on the end of the expanding tube (31), and the motor (5) is fixedly connected to the pushing shaft (341) via a rotating shaft. A material receiving cylinder (6) is fixedly mounted on the top of the shock-absorbing base (1), and the other end of the expanding tube (31) is connected to the material receiving cylinder (6).

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