JP6991482B2 - Heat insulator assembly equipment and method - Google Patents

Description

The present invention belongs to the technical field relating to the assembly device and the assembly method of the heat insulator.

Conventionally, a heat source side heat shield plate, an outer heat shield plate laminated on the heat source side heat shield plate, and a sound absorbing material arranged between the heat source side heat shield plate and the outer heat shield plate and the laminate have been provided. A heat insulator having a heat insulator is known (for example, Patent Document 1).

When assembling such a heat insulator, as in Patent Document 1, a sound absorbing material is arranged at a predetermined position on the heat source side heat shield plate, and an outer heat shield plate is placed from above the sound absorbing material on the heat source side. An assembly method is adopted in which the heat shield plate and the outer heat shield plate are welded together.

In Patent Document 1, a confirmation hole is provided in either the heat source side heat shield plate or the outer heat shield plate to confirm the position of the end portion of the sound absorbing material so as to prevent the sound absorbing material from shifting due to an external force in the welding process. I have to.

Japanese Unexamined Patent Publication No. 2014-31751

By the way, since the shapes of the heat source side heat shield plate and the outer heat shield plate are appropriately changed depending on the position where the heat insulator is arranged and the shape of the heat source, the heat source side heat shield plate and the outer heat shield plate are generally three-dimensional. It has a unique shape. On the other hand, the sound absorbing material is generally composed of a sheet material such as a non-woven fabric. Therefore, when assembling the heat insulator, there arises a problem that it is difficult to prevent the sound absorbing material from shifting.

On the other hand, in the case of Patent Document 1, it can be confirmed that the position of the sound absorbing material is displaced by the confirmation hole, but the displacement needs to be corrected sequentially, which is inefficient.

In order to prevent the position shift of the sound absorbing material, a method of attaching the sound absorbing material to the heat shield plate on the heat source side with an adhesive or the like is also conceivable. However, for example, when the sound absorbing material is made of glass wool, the provision of the adhesive may block the air layer in the glass wool and reduce the sound absorbing effect. In addition, the heat resistance of the adhesive must be taken into consideration, which is troublesome.

The present invention has been made in view of these points, and an object of the present invention is to prevent the sound absorbing material from deviating from a desired position during assembly of the heat insulator while suppressing a decrease in the sound absorbing effect of the sound absorbing material. Is to suppress.

In order to solve the above problems, in the first invention, a heat source side heat shield plate having a plurality of holes and a shape corresponding to the heat source side heat shield plate are provided and laminated on the heat source side heat shield plate. The heat source side heat shield plate is intended for an assembly device of a heat insulator having an outer heat shield plate, a heat source side heat shield plate, an outer heat shield plate, and a sheet-shaped sound absorbing material arranged between the outer heat shield plate and the laminate. With the jig on which the heat source side is set and the heat shield plate on the heat source side set on the jig and the sound absorbing material set on the heat shield plate on the heat source side, the sound absorbing material is placed in the plurality of holes. The suction device is provided with a suction device that sucks toward the heat source side heat shield plate through the heat source side, and the suction device has at least the outer heat shield plate on the heat source side after the sound absorbing material is set on the heat source side heat shield plate. It is characterized in that it is configured to suck the sound absorbing material until it is set on the heat shield plate.

In the second invention, in the first invention, the plurality of holes are provided only in the region of the heat source side heat shield plate where the sound absorbing material is set, and the suction device is the heat source side heat shield plate. Has a suction port that opens toward the heat source side heat shield plate in a state of being set in the jig, and the suction port has a state in which the heat source side heat shield plate is set in the jig. It is characterized in that it is formed so as to cover the region provided with the plurality of holes in the heat shield plate on the heat source side.

In the third aspect of the invention, in the second invention, the jig has a guide pin for guiding the heat source side heat shield plate, and the guide pin is engaged with the heat source side heat shield plate. It has an engaging hole different from the plurality of holes, and when the guide pin engages with the engaging hole, the region provided with the plurality of holes is located at the position of the suction port. It is characterized by being configured as follows.

The fourth invention is an invention of a method for assembling a heat insulator, specifically, a heat source side heat shield plate having a plurality of holes and a shape corresponding to the heat source side heat shield plate, and the heat source side. The target is a method for assembling a heat insulator having an outer heat shield plate laminated on a heat shield plate, a heat source side heat shield plate, and a sheet-shaped sound absorbing material arranged between the outer heat shield plate and the laminate. After the heat source side heat shield setting step of setting the heat source side heat shield plate on the jig and the heat source side heat shield plate setting step, suction toward the heat source side heat shield plate through the plurality of holes. The suction step of generating a force, the sound absorbing material setting step of setting the sound absorbing material on the heat source side heat insulating plate in a state where the suction force toward the heat source side heat insulating plate is generated, and the sound absorbing material setting step of the sound absorbing material setting step. After that, in a state where the suction force toward the heat source side heat shield plate is generated, the outer heat shield plate setting step of setting the outer heat shield plate so as to sandwich the sound absorbing material in cooperation with the heat source side heat shield plate. After the outer heat shield setting step, the heat shield connecting step of connecting the heat source side heat shield plate and the outer heat shield plate is included.

In the fifth aspect of the invention, in the fourth aspect, the plurality of holes are provided only in the region of the heat source side heat shield plate where the sound absorbing material is set, and the suction step is performed by the heat source side heat shield plate. It is executed by a suction device having a suction port that opens toward the heat source side heat shield plate in a state of being set on the jig, and in the heat source side heat shield plate setting step, the heat source side heat shield plate is the above. The area provided with the plurality of holes in the heat shield plate on the heat source side is set so as to be located at the position of the suction port.

A sixth aspect of the invention is the fourth or fifth aspect of the present invention, wherein the sound absorbing material includes a first fiber sheet and a second fiber sheet having a finer mesh than the first fiber sheet, and in the sound absorbing material setting step. The first fiber sheet is set on the heat source side heat shield plate, and then the second fiber sheet is set on the first fiber sheet.

In the seventh aspect of the invention, in any one of the fourth to sixth inventions, at least one of the heat source side heat shield plate and the outer heat shield plate has a flange protruding outward from the outer peripheral edge portion. A plurality of the heat shield plates are provided, and the heat shield connecting step is characterized in that the heat source side heat shield plate and the outer heat shield plate are connected by bending each of the plurality of flanges.

According to the first and fourth inventions, since the sound absorbing material receives the suction force toward the heat source side heat shield plate, when it is set on the heat source side heat shield plate, it is placed at a desired position on the heat source side heat shield plate. It will be in close contact. In addition, the suction force prevents the sound absorbing material from shifting from the desired position. Further, at least from the time when the sound absorbing material is set on the heat source side heat shield plate until the outer heat shield plate is set on the heat source side heat shield plate, the sound absorbing material is sucked toward the heat source side heat shield plate. The sound absorbing material is less likely to deviate from the desired position until it is sandwiched between the heat source side heat shield plate and the outer heat shield plate. After the sound absorbing material is sandwiched between the heat source side heat shield plate and the outer heat shield plate, the displacement of the sound absorbing material is suppressed by the sandwiching force from the heat source side heat shield plate and the outer heat shield plate. Therefore, it is possible to prevent the sound absorbing material from shifting from a desired position during the assembly of the heat insulator.

Further, since the sound absorbing material can be arranged at the desired position without using an adhesive or the like, it is possible to suppress a decrease in the sound absorbing effect of the sound absorbing material.

Therefore, it is possible to suppress the sound absorbing material from deviating from a desired position during the assembly of the heat insulator while suppressing the deterioration of the sound absorbing effect of the sound absorbing material.

According to the second and fifth inventions, the size of the suction port can be reduced as much as possible, so that the suction force of the suction device can be increased as much as possible. As a result, the sound absorbing material is more appropriately suppressed from being displaced from the desired position during the assembly of the heat insulator.

In particular, according to the third invention, when the heat source side heat shield plate is set on the jig, the region of the heat source side heat shield plate provided with a plurality of holes is located at the position of the suction port. This makes it possible to appropriately suck the sound absorbing material by the suction device, and more effectively suppresses the sound absorbing material from being displaced from a desired position during the assembly of the heat insulator.

According to the sixth invention, since the sound absorbing material contains the first fiber sheet and the second fiber sheet, it is necessary to exert the suction force on both the first fiber sheet and the second fiber sheet. In the sixth invention, since the relatively coarse first fiber sheet is first arranged on the heat shield plate on the heat source side, the suction force passes through the first fiber sheet and extends onto the first fiber sheet. Easy to reach. Therefore, when the second fiber sheet having a relatively fine mesh is arranged on the first fiber sheet, the suction force is applied to the second fiber sheet, and the second fiber sheet also faces the heat source side heat shield plate. Be sucked. As a result, even if the sound absorbing material is composed of a plurality of fiber sheets, it is possible to more appropriately suppress the sound absorbing material from being displaced from a desired position during the assembly of the heat insulator.

Further, if the second fiber sheet having a relatively fine mesh is arranged on the first fiber sheet having a relatively coarse mesh, the second fiber sheet is easily caught by the first fiber sheet, so that the second fiber sheet is the first. It is possible to suppress the deviation relative to the fiber sheet. As a result, it is possible to more effectively prevent the sound absorbing material from being displaced from a desired position during the assembly of the heat insulator.

According to the seventh invention, the sound absorbing material can be sandwiched between the heat source side heat shield plate and the outer heat shield plate more firmly than connecting the heat source side heat shield plate and the outer heat shield plate by welding or the like. can. Therefore, it is possible to prevent the sound absorbing material from being displaced from a desired position when the heat source side heat shield plate and the outer heat shield plate are connected and even after the heat insulator is assembled.

It is an exploded perspective view which shows the component of the heat insulator assembled by the assembly apparatus which concerns on embodiment of this invention. It is a schematic diagram of an assembly device. It is a process diagram which shows the process of assembling a heat insulator with an assembly apparatus. It is a figure which shows the process of assembling a heat insulator by an assembly apparatus, and is the perspective view which shows the state which the heat source side heat shield plate is set in a jig. It is a perspective view which shows the state which set the sound absorbing material on the heat shield plate on a heat source side from the state of FIG. It is a partial cross-sectional view corresponding to the VI-VI line of FIG. It is a figure which shows the state which set the outer heat shield plate from the state of FIG. 5, and connected the heat source side heat shield plate and the outer heat shield plate.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example.

<Heat insulator>
FIG. 1 shows a heat insulator 100 assembled by the assembly device 1 according to the present embodiment. The heat insulator 100 is an insulator arranged around an exhaust pipe of an automobile engine, and is an insulator for suppressing heat and vibration (sound vibration) from being transmitted from the exhaust pipe to the passenger compartment or the like of the automobile. Is.

The heat insulator 100 includes a heat source side heat shield plate 101 having a plurality of holes (sound through holes 106 described later), an outer heat shield plate 102 laminated on the heat source side heat shield plate 101, and a heat source side heat shield plate 101. It has a sound absorbing material 103 arranged between the outer heat shield plate 102 and the laminate.

The heat shield plate 101 on the heat source side is arranged on the exhaust pipe side, which is a heat source, and receives radiant heat or the like from the exhaust pipe to suppress direct heat radiation or the like to the outside. The heat source side heat shield plate 101 has a three-dimensional shape corresponding to the shape of the exhaust pipe, and has at least one convex portion or concave portion. In the present embodiment, the heat source side heat shield plate 101 is formed with the first recess 101a, and the first step portion 101b is formed in the middle of the heat source side heat shield plate 101 in the longitudinal direction.

The heat source side heat shield plate 101 is provided with a plurality of flanges 104 protruding outward from the outer peripheral edge portion. As will be described in detail later, the plurality of flanges 104 are for connecting the heat source side heat shield plate 101 and the outer heat shield plate 102.

Further, the heat shield plate 101 on the heat source side is provided with a first engagement hole 105 that engages with a guide pin 13 provided in a jig 10 described later in the assembly device 1.

The plurality of holes provided in the heat shield plate 101 on the heat source side are sound through holes 106 for allowing sound vibration from the exhaust pipe to escape. The sound through hole 106 is formed in a region including a part of the heat shield plate 101 on the heat source side, specifically, both the first recess 101a and the first step portion 101b. As will be described in detail later, the sound through hole 106 is provided only in the region where the sound absorbing material 103 is set.

The outer heat shield plate 102 is laminated on the heat source side heat shield plate 101, receives radiant heat from the heat source side heat shield plate 101, and suppresses direct heat radiation to the outside. The outer heat shield plate 102 has a three-dimensional shape corresponding to the heat source side heat shield plate 101. Specifically, in the outer heat shield plate 102, the second recess 102a is provided at the position corresponding to the first recess 101a of the heat source side heat shield plate 101, while the outer heat shield plate 102. A second step portion 102b is provided at a position corresponding to the first step portion 101b of the heat source side heat shield plate 101. The outer heat shield plate 102 is not formed with a hole corresponding to the sound escape hole 106 of the heat source side heat shield plate 101.

Further, a second engagement hole 107 is provided at a position of the outer heat shield plate 102 corresponding to the first engagement hole 105 of the heat source side heat shield plate 101. The second engaging hole 107 also engages with the guide pin 13 provided in the jig 10 described later of the assembly device 1, similarly to the first engaging hole 105.

In the present embodiment, the heat source side heat shield plate 101 and the outer heat shield plate 102 are made of an aluminum alloy plate. The heat source side heat shield plate 101 and the outer heat shield plate 102 are not limited to aluminum alloy plates as long as they have heat resistance and are made of a material having low thermal conductivity.

The sound absorbing material 103 is arranged so as to be sandwiched between the laminated heat shield plates 101 on the heat source side and the heat shield plate 102 on the outer side at a predetermined arrangement position, and receives and attenuates the sound vibration from the heat source so that the noise is transmitted to the outside. Suppress.

The sound absorbing material 103 has a sheet shape. Specifically, in the present embodiment, the sound absorbing material 103 includes two fiber sheets. More specifically, the sound absorbing material 103 includes a glass fiber sheet 103a (first fiber sheet) and a non-woven fabric 103b (second fiber sheet) having a finer mesh than the glass fiber sheet 103a. The sound absorbing material 103 is configured by arranging a glass fiber sheet 103a on a heat shield plate 101 on the heat source side and arranging a non-woven fabric 103b on the glass fiber sheet 103a.

As shown in FIG. 1, the sound absorbing material 103 is arranged in a region (hereinafter referred to as a sound exit region S) in which a plurality of sound exit holes 106 are formed in the heat source side heat shield plate 101. Specifically, the sound absorbing material 103 is arranged in the sound exit region S so as to cover all of the plurality of sound exit holes 106.

<Assembly equipment>
Next, the assembly device 1 for assembling the heat insulator 100 will be described in detail.

The assembly device 1 includes a jig 10 in which the heat shield plate 101 on the heat source side is set. As shown in FIGS. 2 and 4, the jig 10 includes a frame-shaped mounting portion 11 on which the heat source-side heat shield plate 101 is mounted, and a cylindrical pedestal portion 12 that supports the mounting portion 11. have. The upper end portions of the mounting portion 11 and the pedestal portion 12 have a three-dimensional shape corresponding to the outer peripheral shape of the heat shield plate 101 on the heat source side.

The mounting portion 11 is provided with two guide pins 13. The two guide pins 13 are provided at the corners of the mounting portion 11, respectively. The two guide pins 13 are arranged at diagonal positions when viewed along the cylinder axis of the pedestal portion 12. A total of four guide pins 13 may be provided, one at each corner of the mounting portion 11.

As shown in FIG. 2, a notch 11a is formed in the mounting portion 11, and a recessed portion 12a is formed at a position corresponding to the notch 11a of the pedestal portion 12. The notch 11a and the recess 12a are configured as a receiving portion for receiving one of the plurality of flanges 104 of the heat shield plate 101 on the heat source side. As will be described in detail later, when the notch 11a and the recess 12a receive the target flange 104, the heat shield plate 101 on the heat source side is set at a predetermined position. That is, the notch 11a and the recess 12a also function as a guide for guiding the heat shield plate 101 on the heat source side, similarly to the guide pin 13.

In the jig 10, that is, in the frame of the mounting portion 11 and in the cylinder of the pedestal portion 12, the heat source side heat shield plate 101 is set on the jig 10, and the sound absorbing material 103 is placed on the heat source side heat shield plate 101. A suction device 20 is provided for sucking the sound absorbing material 103 toward the heat shield plate 101 on the heat source side through the sound through hole 106 in the set state.

The suction device 20 has a suction force generating device 21 (see FIG. 6) for generating a suction force, and a suction tube 22 connected to the suction force generating device 21.

The suction force generating device 21 is provided with, for example, a turbine for drawing a vacuum, and generates a suction force by increasing the degree of vacuum in the suction pipe 22. The suction force generating device 21 may be one that generates a preset suction force, or may be one that can adjust the suction force. Although the suction force generator 21 has a smaller scale than the suction tube 22 because it is simplified in FIG. 6, it may actually be larger than the suction tube 22.

One end of the suction pipe 22 is connected to the suction force generating device 21, while the other end of the suction pipe 22 has a suction port 23. As shown in FIG. 4, the suction port 23 opens toward the heat source side heat shield plate 101 with the heat source side heat shield plate 101 set in the jig 10 (strictly speaking, the mounting portion 11). There is. The suction port 23 has a three-dimensional shape corresponding to the corresponding portion in the heat source side heat shield plate 101, specifically, the peripheral portion of the sound escape region S so that the edge portion thereof is in close contact with the heat source side heat shield plate 101. There is. The opening area of the suction port 23 is set to an area slightly larger than the sound exit region S when viewed along the tubular axis of the pedestal portion 12. Therefore, the suction port 23 covers the sound escape region S in the heat source side heat shield plate 101 with the heat source side heat shield plate 101 set in the jig 10. In addition, in order to improve the adhesion between the edge portion of the suction port 23 and the heat shield plate 101 on the heat source side, a flexible member such as rubber may be provided on the edge portion of the suction port 23.

The suction tube 22 is configured to be removable with respect to the suction force generating device 21. As a result, it can be appropriately replaced with another suction tube 22 having a suction port 23 having a shape corresponding to the shape of the heat shield plate 101 on the heat source side.

<Assembly of heat insulator>
Next, a method of actually assembling the heat insulator 100 will be described with reference to FIGS. 3 to 7.

FIG. 3 shows each process when assembling the heat insulator 100 with the assembling device 1. Each step may be performed manually by an operator or may be performed by a robot (not shown). Further, the suction device 20 (particularly, the suction force generation device 21) may be started and stopped by a control device (not shown).

First, in step S1, the heat source side heat shield plate 101 is set on the jig 10 (heat source side heat shield plate setting step).

In this step S1, as shown in FIG. 4, in the heat source side heat shield plate 101, the first engagement hole 105 engages with the guide pin 13 of the mounting portion 11, and the heat source side heat shield plate 101 The flange 104 provided in the portion of the first recess 101a is set so as to be accommodated in the notch 11a of the mounting portion 11 and the recess 12a of the pedestal portion 12. Further, as shown in FIG. 4, when the first engaging hole 105 and the guide pin 13 are engaged, the sound exit region S is positioned at the position of the suction port 23. That is, in this step S1, the heat source side heat shield plate 101 is set so that the sound escape region S in the heat source side heat shield plate 101 is located at the position of the suction port 23.

Next, in step S2, the suction device 20 is operated to start the suction step. As a result, a suction force is generated toward the heat shield plate 101 on the heat source side through the sound through hole 106.

Next, in step S3, in a state where the suction force toward the heat source side heat shield plate 101 is generated, the glass as the sound absorbing material 103 is placed on the heat source side heat shield plate 101, specifically, at the position of the sound escape region S. The fiber sheet 103a is set (sound absorbing material setting step).

In this step S3, the glass fiber sheet 103a arranged on the heat source side heat shield plate 101 is sucked toward the heat source side heat shield plate 101, and as shown in FIG. 6, the heat source side heat shield plate 101 is the first. It is deformed along the shape of the recess 101a of 1 and the first step portion 101b. As a result, the glass fiber sheet 103a is in a state of being substantially in close contact with the desired position of the heat source side heat shield plate 101, that is, the position of the sound loss region S (see FIG. 1 and the like). Further, it is possible to prevent the glass fiber sheet 103a from being displaced from the sound loss region S due to the suction force.

Subsequently, in step S4, the nonwoven fabric 103b as the sound absorbing material 103 is set on the glass fiber sheet 103a in a state where the suction force toward the heat shield plate 101 on the heat source side is generated (sound absorbing material setting step).

Since the glass fiber sheet 103a has a coarse mesh, the suction force by the suction device 20 passes through the glass fiber sheet 103a and extends onto the glass fiber sheet 103a. Therefore, in step S4, when the nonwoven fabric 103b having a relatively fine mesh is arranged on the glass fiber sheet 103a, the suction force is applied to the nonwoven fabric 103b, and the nonwoven fabric 103b is also attracted toward the heat shield plate 101 on the heat source side. Will be done.

By sucking the nonwoven fabric 103b toward the heat source side heat shield plate 101, the nonwoven fabric 103b also has the first recess 101a of the heat source side heat shield plate 101 and the first recess 101a of the heat source side heat shield plate 101 as shown in FIG. 6, similarly to the glass fiber sheet 103a. It is deformed along the shape of the first step portion 101b.

Subsequently, in step S5, the outer heat shield plate 102 is set so as to sandwich the sound absorbing material 103 in cooperation with the heat source side heat shield plate 101 in a state where the suction force toward the heat source side heat shield plate 101 is generated (). Outer heat shield setting process).

In this step S5, the outer heat shield plate 102 is set so that the second engaging hole 107 engages with the guide pin 13 of the mounting portion 11. At this time, since the suction force toward the heat source side heat shield plate 101 is still generated, the sound absorbing material 103 does not deviate from the position of the sound escape region S of the heat source side heat shield plate 101, and the heat source side heat shield plate 101. It is sandwiched between the plate 101 and the outer heat shield plate 102.

Next, in step S6, the suction device 20 is stopped to end the suction step.

As described above, in the present embodiment, the suction device 20 is at least from the time when the sound absorbing material 103 is set on the heat source side heat shield plate 101 until the outer heat shield plate 102 is set on the heat source side heat shield plate 101. , The sound absorbing material 103 is sucked.

Since the outer heat shield plate 102 has a shape corresponding to the heat source side heat shield plate 101, the outer heat shield plate 102 has a shape corresponding to the shape of the sound absorbing material 103 deformed by the suction force. When the sound absorbing material 103 is sandwiched between the heat source side heat shield plate 101 and the outer heat shield plate 102, the sound absorbing material 103 includes the first recess 101a and the first step portion 101b of the heat source side heat shield plate 101, and the outer heat shield plate 101. It remains deformed along the shapes of the second recess 102a and the second step 102b of the plate 102. Therefore, even after the suction device 20 is stopped, the sound absorbing material 103 is less likely to shift from the position of the sound escape region S due to the first recess 101a or the like.

Next, in step S7, the heat source side heat shield plate 101 and the outer heat shield plate 102 are connected (heat shield plate connecting step).

In this step S7, as shown in FIG. 7, a plurality of flanges 104 provided on the heat source side heat shield plate 101 are bent, respectively, and the surface of the outer heat shield plate 102 on the side opposite to the heat source side heat shield plate 101. The heat source side heat shield plate 101 and the outer heat shield plate 102 are connected to each other. This completes the heat insulator 100.

Finally, in step S8, the completed heat insulator 100 is removed from the jig 10.

As described above, the assembly of the heat insulator 100 is completed.

Therefore, according to the present embodiment, the sound absorbing material 103 receives an attractive force toward the heat source side heat shield plate 101, so that when the sound absorbing material 103 is set on the heat source side heat shield plate 101, the heat source side heat shield plate 101 It is in a state of being substantially in close contact with the above desired position (sound omission region S). Further, it is possible to prevent the sound absorbing material 103 from being displaced from the desired position due to the suction force. Further, at least from the time when the sound absorbing material 103 is set on the heat source side heat shield plate 101 until the outer heat shielding plate 102 is set on the heat source side heat shielding plate 101, the sound absorbing material 103 is set on the heat source side heat shielding plate 101. Since it is sucked toward the heat source, the sound absorbing material 103 is less likely to deviate from the desired position until it is sandwiched between the heat source side heat shield plate 101 and the outer heat shield plate 102. Then, after the sound absorbing material 103 is sandwiched between the heat source side heat shield plate 101 and the outer heat shield plate 102, the holding force from the heat source side heat shield plate 101 and the outer heat shield plate 102, the first recess 101a, etc. Due to the shapes of the heat source side heat shield plate 101 and the outer heat shield plate 102, the misalignment of the sound absorbing material 103 is suppressed. Therefore, it is possible to prevent the sound absorbing material 103 from being displaced from a desired position during the assembly of the heat insulator 100.

Further, since the sound absorbing material 103 can be arranged at the desired position without using an adhesive or the like, it is possible to suppress a decrease in the sound absorbing effect of the sound absorbing material 103.

Therefore, it is possible to suppress the sound absorbing material 103 from being displaced from a desired position during the assembly of the heat insulator 100 while suppressing the deterioration of the sound absorbing effect of the sound absorbing material 103.

Further, according to the present embodiment, the opening area of the pull port 23 is set to an area slightly larger than the sound exit region S when viewed along the tubular axis of the pedestal portion 12, and therefore the suction port 23. The size of is narrowed down as much as possible. As a result, the suction force of the suction device 20 can be increased as much as possible. As a result, the sound absorbing material 103 is more appropriately suppressed from being displaced from the desired position during the assembly of the heat insulator 100.

In particular, when the heat source side heat shield plate 101 is set on the jig 10, the sound escape region S in the heat source side heat shield plate 101 is located at the position of the suction port 23. As a result, the sound absorbing material 103 can be appropriately sucked by the suction device 20, and the sound absorbing material 103 is more effectively suppressed from being displaced from a desired position during the assembly of the heat insulator 100.

Further, according to the present embodiment, since the relatively coarse glass fiber sheet 103a is first arranged on the heat source side heat shield plate 101, the suction force of the suction device 20 is arranged on the glass fiber sheet 103a. The suction force is also applied to the non-woven fabric 103b, and the misalignment of the sound absorbing material 103 can be suppressed more appropriately. Further, if the nonwoven fabric 103b is arranged on the glass fiber sheet 103a, the nonwoven fabric 103b can be easily caught on the glass fiber sheet 103a, and the nonwoven fabric 103b can be prevented from being displaced relative to the glass fiber sheet 103a. As a result, it is possible to more effectively suppress the sound absorbing material 103 from being displaced from the desired position during the assembly of the heat insulator 100.

Further, in the present embodiment, the plurality of flanges 104 provided on the heat source side heat shield plate 101 are bent to connect the heat source side heat shield plate 101 and the outer heat shield plate 102. As a result, the sound absorbing material 103 is sandwiched between the heat source side heat shield plate 101 and the outer heat shield plate 102 more firmly than connecting the heat source side heat shield plate 101 and the outer heat shield plate 102 by welding or the like. be able to. As a result, it is possible to prevent the sound absorbing material 103 from being displaced from the desired position when the heat source side heat shield plate 101 and the outer heat shield plate 102 are connected and even after the heat insulator 100 is assembled. It should be noted that this embodiment does not exclude connecting the heat source side heat shield plate 101 and the outer heat shield plate 102 by welding.

The present invention is not limited to the above embodiment, and can be substituted as long as it does not deviate from the gist of the claims.

For example, in the above-described embodiment, after the outer heat shield plate 102 is set, the suction device 20 is stopped before connecting the heat source side heat shield plate 101 and the outer heat shield plate 102, but the present invention is limited to this. Instead, the suction device 20 may be stopped after connecting the heat source side heat shield plate 101 and the outer heat shield plate 102.

Further, in the above-described embodiment, the sound absorbing material 103 is composed of the glass fiber sheet 103a and the nonwoven fabric 103b, but is not limited to this, and may be composed of a sheet other than the glass fiber sheet 103a and the nonwoven fabric 103b. .. Further, it may be composed of three or more sheets instead of two sheets, or may be composed of only one sheet. When the sound absorbing material 103 is composed of a plurality of sheets, it is desirable to set the coarsest sheet on the heat shield plate 101 on the heat source side.

Further, in the above-described embodiment, the heat source side heat shield plate 101 is provided with only the concave portion among the concave portion and the convex portion, but the present invention is not limited to this, and only the convex portion among the concave portion and the convex portion may be provided. Alternatively, both the concave portion and the convex portion may be provided. Further, at least one of the concave portion and the convex portion may be provided in a plurality. When both the concave portion and the convex portion are provided, the sound escape region S does not have to be formed so as to straddle all the concave portions and the convex portions, and is formed in a part of the concave portion and the convex portion. It suffices to straddle.

Further, in the above-described embodiment, the jig 10 has a mounting portion 11 and a pedestal portion 12, but the jig 10 is not limited to this, and a plurality of columnar support legs are provided on the mounting portion 11 instead of the pedestal portion 12. (For example, one may be provided at each corner of the mounting portion).

Further, in the above-described embodiment, the heat insulator 100 is an insulator arranged around the exhaust pipe of an automobile engine, but the present invention is not limited to this, and heat and vibration (sound vibration) are transmitted to the outside. The target covered by the heat insulator 100 is not particularly limited as long as it is a heat source that needs to be suppressed. For example, the heat insulator 100 may cover the engine itself from above.

The above embodiments are merely examples, and the scope of the present invention should not be construed in a limited manner. The scope of the present invention is defined by the scope of the claims, and all modifications and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

The present invention is arranged between a heat source side heat shield plate having a plurality of holes, an outer heat shield plate laminated on the heat source side heat shield plate, a heat source side heat shield plate, an outer heat shield plate, and a sheet. It is useful as an assembly device for a heat insulator having a sound absorbing material having a shape.

1 Assembly device 10 Jig 13 Guide pin 20 Suction device 23 Suction port 100 Heat insulator 101 Heat source side heat shield plate 102 Outer heat shield plate 103 Sound absorbing material 103a Glass fiber sheet (first fiber sheet)
103b Non-woven fabric (second fiber sheet)
104 Flange 105 First engagement hole 106 Sound exit hole (multiple holes in the heat shield plate on the heat source side)

Claims (7)

A heat source side heat shield plate having a plurality of holes, an outer heat shield plate having a shape corresponding to the heat source side heat shield plate and laminated on the heat source side heat shield plate, the heat source side heat shield plate, and the heat shield plate. An assembly device for a heat insulator, which is arranged between an outer heat shield plate and a laminate and has a sound absorbing material in the form of a sheet.
The jig on which the heat shield plate on the heat source side is set and
With the heat source side heat shield plate set on the jig and the sound absorbing material set on the heat source side heat shield plate, the sound absorbing material is passed through the plurality of holes to the heat source side heat shield plate. Equipped with a suction device that sucks toward
The suction device sucks the sound absorbing material at least from the time when the sound absorbing material is set on the heat source side heat insulating plate until the outer heat insulating plate is set on the heat source side heat insulating plate. A heat insulator assembly device characterized by being configured. In the heat insulator assembly apparatus according to claim 1,
The plurality of holes are provided only in the region where the sound absorbing material is set in the heat shield plate on the heat source side.
The suction device has a suction port that opens toward the heat source side heat shield plate with the heat source side heat shield plate set in the jig.
The suction port is characterized in that the heat source side heat shield plate is formed so as to cover a region of the heat source side heat shield plate provided with a plurality of holes in a state where the heat shield plate is set on the jig. Heat insulator assembly equipment. In the heat insulator assembly apparatus according to claim 2,
The jig has a guide pin for guiding the heat shield on the heat source side.
The heat shield plate on the heat source side has an engaging hole different from the plurality of holes to which the guide pin engages.
An assembly device for a heat insulator, characterized in that, when the guide pin engages with the engagement hole, the region provided with the plurality of holes is configured to be located at the position of the suction port. A heat source side heat shield plate having a plurality of holes, an outer heat shield plate having a shape corresponding to the heat source side heat shield plate and laminated on the heat source side heat shield plate, the heat source side heat shield plate, and the heat shield plate. It is a method of assembling a heat insulator having a sound absorbing material in the form of a sheet, which is arranged between an outer heat shield plate and a laminate.
The heat source side heat shield setting process for setting the heat source side heat shield plate on the jig, and
After the heat source side heat shield setting step, a suction step of generating a suction force toward the heat source side heat shield plate through the plurality of holes, and a suction step.
The sound absorbing material setting process of setting the sound absorbing material on the heat source side heat shielding plate in a state where the suction force toward the heat source side heat shielding plate is generated, and the sound absorbing material setting process.
After the sound absorbing material setting step, the outer heat insulating plate is set so as to sandwich the sound absorbing material in cooperation with the heat source side heat insulating plate in a state where the suction force toward the heat source side heat insulating plate is generated. Outer heat shield setting process and
A method for assembling a heat insulator, which comprises a heat shield connecting step of connecting the heat source side heat shield and the outer heat shield after the outer heat shield setting step. In the method for assembling a heat insulator according to claim 4,
The plurality of holes are provided only in the region where the sound absorbing material is set in the heat shield plate on the heat source side.
The suction step is executed by a suction device having a suction port that opens toward the heat source side heat shield plate with the heat source side heat shield plate set in the jig.
In the heat source side heat shield setting step, the heat source side heat shield plate is set so that the region of the heat source side heat shield plate provided with the plurality of holes is located at the position of the suction port. A method of assembling a heat insulator characterized by. In the method for assembling a heat insulator according to claim 4 or 5.
The sound absorbing material includes a first fiber sheet and a second fiber sheet having a finer mesh than the first fiber sheet.
In the sound absorbing material setting step, after setting the first fiber sheet on the heat source side heat shield plate, the second fiber sheet is set on the first fiber sheet to assemble a heat insulator. Method. In the method for assembling a heat insulator according to any one of claims 4 to 6.
At least one of the heat source side heat shield plate and the outer heat shield plate is provided with a plurality of flanges protruding outward from the outer peripheral edge portion.
A method for assembling a heat insulator, which comprises connecting the heat source side heat shield plate and the outer heat shield plate by bending each of the plurality of flanges in the heat shield connecting step.

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