JPH07180526A - Core extracting device - Google Patents

Abstract

PURPOSE:To provide a core extracting device capable of reducing the number of personnel engaged in the production of glass wool cylindrical bodies by fully mechanizing core extracting operation. CONSTITUTION:A core extracting device is provided with a glass wool fixing device 1 to fixedly support a glass wool cylindrical body G and a core material extracting device 2 to extract a cylindrical body forming core metal P. With the glass wool cylindrical body G chucked by the chuck part 5 of the glass wool fixing device 1, the rotating part 20 of the core material extracting device 2 rotates the cylindrical body forming core metal P forcibly around its axis so as to release the connection between P and G. Then the extracting part 21 of the core material extracting device 2 pulls the cylindrical body forming core metal P in its axial direction so as to extract it from the glass wool cylindrical body G. A series of these actions are continued automatically by a control device 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core removing device, and more particularly to a technique for manufacturing a glass wool cylinder as a sound absorbing material to be filled in a silencer of an automobile or a motorcycle.

[0002]

2. Description of the Related Art For example, in the exhaust system of an automobile engine,
A muffler is installed to reduce the temperature and pressure of the exhaust gas emitted from the engine and to reduce and muffle the exhaust sound. The basic structure of this silencer is roughly classified into two types, a resonance type that applies the principle of resonance damping and an expansion type that has an expansion chamber. In reality, this is filled with a heat-resistant sound absorbing material. Generally, a compound formula is a complex combination of the above.

The muffler of FIG. 7 shows an example thereof, in which a small-diameter inner chamber b having a large number of communication holes is inserted into a cylindrical outer chamber a, so that both chambers a,
An expansion chamber is formed between b. In the expansion chamber, a large-diameter inner chamber c is installed to have a double structure, and the outer peripheral portion of the large-diameter inner chamber c is filled with a glass wool layer G as a heat-resistant sound absorbing material.

In the silencer S thus constructed, one end e of the small-diameter inner chamber b is communicated with the exhaust manifold f of the engine and the other end h is exhausted in a state of being housed in the protective cover d. It is open to the atmosphere via tube i. Then, the exhaust gas discharged from the engine is increased in volume and reduced in pressure in the expansion chamber of the silencer S, its acoustic energy is consumed, and the exhaust gas is absorbed by the glass wool layer G and then released to the outside air.

As a method of forming the glass wool layer G, a glass wool band is directly wound on an inner chamber (a large diameter inner chamber c in the figure) which is a core metal to form a layer. There is a method and a method in which a glass wool cylinder is manufactured in advance and is fitted into the large-diameter inner chamber c.

In the latter process of manufacturing a glass wool tube, as shown in FIG. 6 (a), first, a thin glass wool band Ga is formed on the outer periphery of a tube forming core bar P having a predetermined outer diameter dimension.
Is wrapped around to form a glass wool layer G having a predetermined thickness (see FIG. 6 (b)). At this time, a mold release agent (for subsequent core removing work) is applied to the outer peripheral surface of the core P for forming a cylinder, if necessary, and the interlayer of each glass wool band Ga is
An adhesive is sprayed as a molding agent.

Subsequently, the glass wool layer G formed on the core metal P for forming the cylinder is directly stored in the drying chamber j or the like, and the glass wool layer G is predetermined in a high temperature atmosphere of a predetermined temperature (for example, 150 to 160 ° C.). It is heated and dried only for a time (see FIG. 6 (c)).

Finally, the dried and solidified glass wool layer G is pulled out from the core P for forming a cylinder to obtain a cylindrical product (see FIG. 6 (d)).

The core removing work is conventionally performed manually by three or four workers. The core body forming core P is fixedly supported on a fixing portion (not shown), and after the heat drying. All the workers grip the glass wool layer G. And first,
The glass wool layer G is forcibly rotated about its axis with respect to the core P for forming the cylinder (see the double-dotted chain line arrow), and the fixed state between the two is released, and the glass wool layer is released. By pulling G in the axial direction (see the double-dotted chain line arrow), it is pulled out from the core P for forming the cylinder.

[0010]

However, in such a manual core removing work, although a device such as a release agent is applied to the outer peripheral surface of the core P for forming a cylinder,
After heating and drying, the outer peripheral surface of the core metal P for forming the cylinder and the inner peripheral surface of the glass wool layer G are in a tightly fixed state.

For this reason, the core removing work is not easy even with three or four workers. In particular, when the glass wool layer G is thin, it is necessary to perform core removal work before solidification of the mold release agent and shrinkage of the glass wool on the outer peripheral surface of the core body P for forming a cylinder, so work under high heat is strong. As a result, it is difficult for the worker to firmly and surely hold the glass wool layer G, and there is a danger, so that the worker cannot exert sufficient force.

Moreover, since the core work is dependent on manpower, the work efficiency is poor, and the labor cost has risen in recent years, resulting in a large increase in the manufacturing cost and the product cost.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to reduce the number of personnel involved in the manufacture of glass wool cylinders by completely mechanizing the above core removing work. An object of the present invention is to provide a core removing device that can be reduced.

[0014]

In order to achieve the above object, the core removing device of the present invention is a core material for forming a glass body from the glass wool cylinder in the manufacturing process of the glass wool cylinder to be installed in the muffler. Is a device for core removal, the glass wool fixing means for fixing and supporting the glass wool cylinder, and the glass wool cylinder supported by the glass wool fixing means, the core material for forming a cylinder is forced around its axis. It is characterized in that it is provided with a core material withdrawing means that rotates and withdraws in the axial direction.

More specifically, the glass wool fixing means comprises a chuck portion for chucking and holding the outer peripheral portion of the glass wool cylinder, and a drive portion for chucking the chuck portion. A fixed-side chuck that supports the lower outer peripheral surface of the glass wool cylinder, and a movable chuck that can be opened and closed with respect to the fixed-side chuck and that supports the upper outer peripheral surface of the glass wool cylinder. The receiving surfaces of both chucks have an arcuate cross-section forming at least a part of a cylindrical surface that tightly engages with the outer peripheral surface of the glass wool cylindrical body.

On the other hand, the core material withdrawing means has a rotating portion for forcibly rotating the tubular body forming core material about its axis and a withdrawing portion for withdrawing the tubular body forming core material in its axial direction. The rotating part includes a core material locking part that fixes and locks one end of the tubular body forming core material, and the locking part is rotationally driven around the axis of the tubular body forming core material. A rotary actuator, and the extraction unit includes a guide unit that guides the rotary unit to move in parallel with the axis of the tubular body forming core member; and a cylinder device that reciprocates the rotary unit along the guide unit. Consists of.

The glass wool fixing means and the core material withdrawing means are drive-controlled by the control means in cooperation with each other.

[0018]

In the core removing device of the present invention, the rotating portion of the core material withdrawing means is first operated while the chuck portion of the glass wool fixing means holds the outer periphery of the glass wool cylindrical body by chucking, and the cylinder body is removed. The forming core material is forcibly rotated about its axis to separate the fixed state between the outer peripheral surface of the cylindrical body forming core material and the inner peripheral surface of the glass wool cylindrical body.

Subsequently, the pulling-out portion of the core material pulling means is actuated to pull the tubular body forming core material in the axial direction thereof to form a tubular body from the glass wool tubular body chucked and held by the glass wool fixing means. The core material is pulled out. These series of operations are automatically and continuously performed by the control means.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

A core removing device according to the present invention is shown in FIGS. 1 to 3, and this core removing device is used in a manufacturing process of a glass wool cylinder G used as a glass wool layer of a silencer S as shown in FIG. Specifically, FIG. 6 (d)
At the final stage of the manufacturing process of the glass wool cylinder G shown in FIG.
Is automatically pulled out.

As shown in FIG. 1, the core removing device is mainly composed of a glass wool fixing device (glass wool fixing means) 1, a core material drawing device (core material drawing means) 2 and a control device (control means) 3. The left and right device bases 4a, 4
It is provided on b. Both of these device bases 4a and 4b are formed of a columnar steel material as a frame,
They are integrally connected to each other.

The glass wool fixing device 1 is for fixing and supporting the glass wool cylinder G, is installed on the right device base 4a, and chucks and holds the outer peripheral portion of the glass wool cylinder G as shown in FIG. It is composed of a chuck section 5 and a drive section 6 for causing the chuck section 5 to perform a chucking operation.

The chuck part 5 includes a fixed chuck 10
And a movable side chuck 11. The chucks 10 and 11 have a light weight structure specifically made of a wooden block body.

The fixed chuck 10 is fixedly provided on the upper surface of the right device base 4a. On the other hand, the movable chuck 11 is attached to the tip of the opening / closing arm 12. The base end portion of the opening / closing arm 12 is pivotally supported on the right side device base 4a so as to be swingable in the vertical direction via a support shaft 13, whereby the movable side chuck 11 is fixed. It can be opened and closed with respect to 10.

On the upper surface of the fixed side chuck 10, a receiving surface 10a for supporting the lower outer peripheral surface of the glass wool cylinder G is provided.
And a receiving surface 11a that receives the upper outer peripheral surface of the glass wool cylinder G is formed on the lower surface of the movable chuck 11, and both receiving surfaces 10a,
11a forms the chuck surface of the chuck portion 5.

The chuck surfaces 10a and 11a are each specifically composed of a thin plate-like elastic member 14 integrally attached to the recess of the wooden block. The elastic member 14 prevents damage to the outer peripheral surface of the glass wool cylinder G during chucking, and provides sufficient chucking force. In the illustrated example, urethane rubber is preferably used as the elastic member.

The chuck surfaces 10a and 11a are
It has a circular arc-shaped cross section that forms at least a part of a cylindrical surface that tightly engages with the outer peripheral surface of the glass wool cylinder G. In the illustrated example, as shown in FIG.
That is, it is a cylindrical surface that tightly engages the entire outer peripheral surface of the glass wool cylinder G.

In this connection, the fixed-side chuck 10 and the movable-side chuck 11 are detachably attached to the upper surface of the right-side device base 4a and the opening / closing arm 12, respectively.
Plural kinds of sets having different chuck inner diameters (inner diameters of the chuck surfaces 10a and 11a) are prepared.

Then, by exchanging these chucks 10 and 11 as appropriate, the glass wool cylinder G to be handled.
The optimum chuck inner diameter corresponding to the outer diameter of the chuck can be obtained.

The drive unit 6 is specifically composed of an air cylinder device. The cylinder body 6a is pivotally supported on the lower end of the right device base 4a, and the tip of the piston rod 6b thereof is pivoted on the tip of the operation arm 17. It is linked. The operation arm 17 is integrally connected to the base end of the opening / closing arm 12 at an angle.

When the movable rod chuck 11 is closed with respect to the fixed chuck 10 by the protrusion of the piston rod 6b (see the solid line in FIG. 2), the piston rod 6b is retracted. Due to
The movable chuck 11 is opened with respect to the fixed chuck 10 (see the chain double-dashed line in FIG. 2).

Although not shown, the cylinder body 6 is not shown.
In a, a chuck opening / closing sensor for detecting the maximum protruding position (closed position of the movable chuck 11) and the maximum retracted position (open position of the movable chuck 11) of the piston rod 6b is provided, and the detection result is the above control. Sent to device 3.

The core material withdrawing device 2 includes a rotating portion 20 for forcibly rotating the cylindrical body forming core P, and the cylindrical body forming core P.
And a pull-out portion 21 for pulling out the main body of the left device base 4b.

The rotating portion 20 includes the core P for forming the cylindrical body.
Metal bar locking part (core material locking part) 23 for fixing and locking one end of the
And a rotary actuator 24 that rotationally drives the core bar hook 23.

As shown in FIG. 4, the core metal hooking portion 23 is in the form of a linear rod-like hooking rod having a tapered tip portion 23a, and the rotary shaft 25 of the rotary actuator 24.
Is provided via a substantially L-shaped rotary arm 26.

The core metal hooking portion 23 has a base end thread portion 2
3b is fixed to the tip of the rotary arm 26 by a nut 27. The core bar hook 23 has an axis x
Passes through an extension of the axis X of the rotary shaft 25 (see FIG.
(See FIG. 4) and is orthogonal to the axis X (see FIG. 4). Correspondingly, hook holes Pa, Pa for hooking the core metal locking portion 23 in a penetrating manner are provided at the end portion of the cylindrical body forming core metal P.

Specifically, the rotary actuator 24 is an air actuator having an air supply source as a drive source, and its actuator body 24a is installed on the moving table 31 and its rotary shaft 24b is locked with the core metal. A section 23 is provided. The rotary shaft 24b is arranged such that the extension line of the axis line X coincides with the axis line X _P of the glass wool cylinder G held by the chuck 5 and the cylinder forming core bar _P.

Therefore, in FIG. 4, the rotary shaft 24b of the rotary actuator 24 is indicated by an arrow A in a state where one end of the core P for forming a cylindrical body is locked and fixed to the above-mentioned core metal locking portion 23.
Alternatively, when it is rotationally driven in the B direction, the cylinder-forming core bar P is forcibly rotated about its axis X _P.

The rotary shaft 24 of the rotary actuator 24
The rotation angle range θ of b (see FIG. 3) is defined by the cylindrical body forming core material P.
It is set to an extent sufficient to release the fixed state between the outer peripheral surface of the glass wool and the inner peripheral surface of the glass wool cylinder G. In the illustrated example, the rotation angle range θ is set to 180 ° with reference to the rotation initial position N. Further, at the rotation initial position N, the tip end portion 23a of the core metal hooking portion 23 is set to face vertically upward.

Although not shown, the rotary actuator 24 has a core metal for detecting the rotation initial position N and the maximum rotation position (the rotation position of 180 ° in the direction of arrow A with respect to N) of the rotation shaft 24b. A rotation sensor is provided, and the detection result is sent to the control device 3.

Although not shown, the rotating unit 20 is not shown.
A torque sensor for detecting a rotation torque acting on the rotary actuator 24 is provided. In the illustrated example, the torque sensor is built in the rotary actuator 24, and the rotary actuator 24 is drive-controlled according to the detection result of the torque sensor.

The above-mentioned torque sensor is for detecting the dry state of the glass wool cylinder G as a product from the viewpoint of the ease of rotation of the cylinder forming core bar P with respect to the glass wool cylinder G.

That is, the product glass wool cylinder G
A certain standard is required for the finished state of, and it is necessary to meet this standard in order to improve the yield of products. Then, in the core removing work which is the final stage of the manufacturing process of the glass wool cylinder G, the core P for forming the cylinder from the glass wool cylinder G is cored while the glass wool cylinder G is completely dried. There is a need.

In order to meet this demand, a method of knowing the dry state of the glass wool cylinder G by surely controlling the temperature (drying temperature) with a temperature sensor, or a method of measuring the glass wool cylinder G and the cylinder with a moisture sensor For example, there is a method of directly knowing the dry state of the glass wool cylinder G by detecting the water content at the boundary portion of the forming core bar P (the portion where the drying is slowest). However, in the former method, it is very difficult to know the above-mentioned dried state by the temperature because of various factors such as the winding layer state of the glass wool cylinder G, the layer thickness and the outer diameter. Along with this, it cannot be expected that the dry state management accuracy will be very high. Further, the latter method has a problem that the equipment is very expensive. As a result, it is practically difficult to adopt any of the above methods.

On the other hand, the present inventor has empirically confirmed the following facts through the conventional manual core removing work. That is, when the glass wool cylinder G is in a completely dry state, the barrel forming core P and the glass wool cylinder G can rotate relative to each other, and conversely, the glass wool cylinder G is completely rotated. If it is not in a dry state, the above relative rotation is difficult and, in the worst case, impossible.

Therefore, in this embodiment, based on this empirical rule, a torque sensor detects the rotational torque acting on the rotary actuator 24 at the initial stage of operation, and the dry state of the glass wool cylinder G is known from the detection result. At the same time, the rotary actuator 24 is driven and controlled according to the detection result.

That is, when the rotational torque acting on the rotary actuator 24 is larger than a preset value, it means that the glass wool cylinder G is not completely dry, and the operation of the rotary actuator 24 is stopped. On the other hand, when the rotation torque is smaller than the set value, it means that the glass wool cylinder G is in a completely dry state, so that the rotary actuator 24 continues to operate and the cylinder forming core bar P is It will be forced to rotate around the axis X _P.

The preset rotational torque value is appropriately set in consideration of the winding layer state of the target glass wool cylinder G, the layer thickness, the outer diameter or the inner diameter, and the like.

The withdrawing portion 21 guides the rotating portion 20 in parallel with the axis X _{P of the} core P for forming the cylindrical body, and the rotating portion 20 reciprocates along the guide portion 40. And a cylinder device 41.

As shown in FIG. 1 and FIG. 3, the guide portion 40 includes a pair of upper and lower guide rails 42, 42 and traveling guides 43, 4 traveling on these guide rails 42, 42.
3, ... and.

The guide rail 42 is provided on the left side device base 4
Two guide rails 42, 42 are arranged horizontally and in parallel in the vertical direction at a predetermined interval on the front surface of the guide frame 44 vertically provided at the rear part of b. Axis X _{P of the} core P for forming the cylinder
It is provided so as to extend in parallel with. The traveling guide 43
Is attached to the back surface of the movable table 31 on the guide rail 4
A plurality of units are installed corresponding to 2, 42.

Further, in a state in which these traveling guides 43, 43, ... Are movably arranged on the guide rails 42, 42, the rotary actuator 24 on the movable table 31.
Are configured to satisfy the above-mentioned position condition.

The cylinder device 41 is specifically an air cylinder device, and is provided on the rear side of the glass wool fixing device 1. The cylinder body 41a of the cylinder device 41 is installed in a horizontal state on the upper surface of the right device base 4a, and its piston rod 41b is projected and retracted in parallel with the axis line X _{P of the} cylinder body forming core bar _P. It is set to work. The tip of the piston rod 41b is connected to a connecting bracket 51 provided on the back surface of the movable table 31 via a joint 50. Further, the projecting / retracting stroke L of the piston rod 41b is set to be larger than the horizontal moving distance by which the above-mentioned cylinder body forming core bar P is completely pulled out from the glass wool cylinder body G.

Then, as the piston rod 41b projects, the rotary actuator 24 moves together with the movable table 31 in the pulling direction C on the guide rails 42, 42 (to the position indicated by the chain double-dashed line in FIG. 1). By performing the pulling-out operation of the barrel-forming core P and moving the piston rod 41b back and forth, the rotary actuator 24 moves in a direction opposite to the pulling-out direction C, and the barrel-forming core P is formed. 1 to the forced rotation position (solid line position in FIG. 1).

Although not shown, the cylinder body 4
1a is provided with a withdrawal sensor that detects the maximum protruding position (withdrawal operation completion position) and the maximum retracted position (withdrawal operation start position, that is, the forced rotation position) of the piston rod 41b, and the detection result is the control device 3 described above. Sent to.

The control device 3 drives and controls the glass wool fixing device 1 and the core material drawing device 2 in conjunction with each other. Specifically, the control device 3 detects a detection signal from a chuck opening / closing sensor of the cylinder body 6a,
Receiving the detection signals from the core metal rotation sensor and the torque sensor of the rotary actuator 24 and the detection signal from the pull-out sensor of the cylinder body 41a, these actuators 15, 24 and 45 are received.
Are controlled in synchronism with each other, and a core removing step described later is automatically executed.

Therefore, as described above, the core removing process of the glass wool cylinder G by the core removing device configured as described above is a pre-process of forming the glass wool cylinder G on the core P for forming a cylinder. It is performed following.

That is, first, in FIG. 6, a thin glass wool band Ga is wound around the outer periphery of the core P for forming a tubular body having a predetermined outer diameter dimension (see FIG. 6 (a)), and glass wool having a predetermined thickness. A layer G is formed (see FIG. 6 (b)), and then the glass wool layer G formed on the core P for forming a cylinder is directly stored in the drying chamber j or the like and heated to a predetermined temperature. After heating and drying for a predetermined time in the atmosphere (Fig. 6)
(See (c)), the core removing step is performed by the core removing device (see FIG. 5).

A. Installation of glass wool cylinder G: Glass wool cylinder G dried and solidified by heating and drying as described above
Is attached to the core removing device of the present invention. At this time, the glass wool fixing device 1 is in the open state (see the chain double-dashed line in FIG. 2), and the rotating part 20 of the core material withdrawing device 2 is in the state shown in FIGS.
And in the position indicated by the solid line in FIG.

The operator inserts the hooking hole Pa at one end of the core metal P for forming a cylinder into the core metal hooking portion 2 at the initial rotation position N in FIG.
The glass wool cylinder G is fixed to the glass wool fixing device 1 while being inserted into and locked from the upper side of 3 (see the position indicated by the solid line in FIG. 4).
It is housed and held in the fixed side chuck receiving surface 10a (see FIG. 5 (a)).

Subsequently, the operator turns on the start button of the core removing device to automatically and continuously perform the following core removing process according to the program of the control device 3.

B. Core removing step by core removing device: The glass wool fixing device 1 is operated to fix and hold the glass wool cylinder G. That is, the protrusion of the piston rod 6b of the air cylinder 6 causes the movable chuck 11 of the chuck portion 5 to close, and the outer peripheral portion of the glass wool cylinder G is chucked and held by the upper and lower chucks 10 and 11 (FIG. See 5 (b)).

When the movable chuck 11 is closed (detection signal from the chuck open / close sensor of the air cylinder 6),
The rotating part 20 of the core material withdrawing device 2 is actuated to separate the glass wool cylinder G from the cylinder forming core P (see FIG. 5 (c)).

That is, when the rotary actuator 24 is driven to rotate, the core metal hooking portion 23 moves from the initial rotation position N to the arrow A.
After the forward rotation of 180 ° in the direction, it immediately returns to the reverse direction B and returns to the initial rotation position N (the operation timing depends on the detection signal from the core metal rotation sensor of the rotary actuator 24).

As a result, the tube-forming core bar P is forcibly twisted and rotated once with respect to the glass wool tube G,
The bonded portion of these both, that is, the boundary surface (inner and outer peripheral surfaces) is forcibly separated, and the fixed state of both is released.

When the rotation of the core metal hooking portion 23 is stopped (the operation timing is based on the detection signal from the core metal rotation sensor of the rotary actuator 24), the pulling-out portion 21 of the core material pulling-out device 2 is activated and the glass wool tube The tubular body-forming core bar P is pulled out from the body G (see FIG. 5D).

That is, due to the protrusion of the piston rod 41b of the air cylinder 41, the rotary portion 20 is moved to the guide rail 4
2, 42 is moved in the pull-out direction B, and
The tube-forming core bar P hooked on the tube is completely pulled out from the glass wool tube G in the pulling direction C.

When the withdrawal of the core P for forming the tubular body is completed (the operation timing depends on the detection signal from the withdrawal sensor of the cylinder device 41), the rotating portion 20 of the core material withdrawing device 2 is activated again, and the tubular body is removed. The forming core P can be removed (see FIG. 5 (e)).

That is, when the rotary actuator 24 is driven to rotate, the core metal hooking portion 23 moves from the initial rotation position N to the arrow A.
Rotate 180 ° in the direction and stop. As a result, one end of the core P for forming a cylinder falls due to its own weight,
The core bar hooking portion 23 is pulled downward to complete the removal of the cylinder forming core bar P.

When the removal of the core P for forming the cylinder is completed (the operation timing is the rotation actuator 24
(According to the detection signal from the core bar rotation sensor), the rotary actuator 24 is driven to rotate again, and the core bar locking portion 23 rotates in the direction B opposite to the above and returns to the initial rotation position N. Further, the pulling-out portion 21 of the core material pulling-out device 2 operates, the piston rod 41b of the air cylinder 41 retracts, and the rotating portion 20 moves the cylinder body forming core bar P to the forced rotation position (solid line position in FIG. 1). Return to.

On the other hand, the glass wool fixing device 1 also operates again, and the chucking holding state of the glass wool cylinder G is released. That is, the piston rod 6 of the air cylinder 6
By the retreat of b, the movable chuck 11 of the chuck part 5 is opened, and the glass wool cylinder G can be taken out.

From the above, the operation of the core removing device is stopped,
The operator takes out the glass wool cylinder G, which is a product, and thereafter, the above steps A and B are sequentially repeated for each glass wool cylinder G that has undergone the heating and drying process.

C. At the time of detecting an abnormality of the core removing device: In the step B, when the rotation torque acting on the rotary actuator 24 is larger than a preset set value (the operation timing depends on the detection signal from the torque sensor of the rotary actuator 24). ), The rotational drive of the rotary actuator 24 is stopped, and the subsequent steps are interrupted. In this case, since the glass wool cylinder G is not completely dried, the heating and drying step is performed again.

It should be noted that the above-described embodiment is merely a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes can be made within the scope. That is, the present invention can be modified as follows as long as the basic configuration of the glass wool fixing device 1 for fixing and supporting the glass wool cylinder G and the core material extracting device 2 for extracting the core P for forming the cylinder is provided. .

For example, in the illustrated example, the chuck inner diameter can be adjusted by exchanging the fixed side chuck 10 and the movable side chuck 11, but it can be adjusted without exchanging both chucks 10 and 11. A structure can also be adopted.

As an example, although not shown, a rubber tube member for adjusting the inner diameter is attached to the chuck surfaces 10a and 11a, and an appropriate amount of air is appropriately supplied and supplied from the air source to the tube member. Chuck surface 10
The configuration may be such that the inner diameters of a and 11a are adjusted. With such a configuration, the time required for exchanging the chucks 10 and 11 can be saved, and the chucks 1
It is not necessary for the 0 and 11 to be made of a lightweight wooden structure.

Further, in the illustrated example, the chuck surfaces 10a and 11a of the chuck portion 5 are complete cylindrical surfaces which tightly engage with the entire outer peripheral surface of the glass wool cylinder G. It may have an arcuate cross-section forming a part of a cylindrical surface that tightly engages with the outer peripheral surface of G. With such a chuck surface structure, the chuck inner diameter can be adjusted to some extent.

Further, although the drive units 6, 24, 41 in the illustrated example are all constructed to be driven by air, other drive sources can be used, and a motor device other than the cylinder device can also be used. Is.

Further, in the illustrated example, a torque sensor is built in the rotary actuator 24 as a means for detecting the dry state of the glass wool cylinder G, but instead of this, a temperature sensor, a moisture sensor or the like is used to make the glass wool cylinder. It may be configured to detect the dry state of the body G. Also,
Of course, it is also possible to omit these sensors and have a simpler configuration. In this case, in the heating and drying step which is the previous step, the dry state of the glass wool cylinder G is detected in advance by an appropriate method, and only the glass wool cylinder G which has been completely dried is sent to the core removing step. .

[0081]

As described above, according to the present invention, the glass wool fixing means for fixing and supporting the glass wool cylindrical body and the core material for forming the cylindrical body are provided for the glass wool cylindrical body supported by the glass wool fixing means. Since it is provided with a core material extracting means for forcibly rotating around its axis and extracting in the axial direction, the core-removing work of the glass wool cylinder, which has been conventionally performed manually, is completely mechanized, and the glass wool cylinder The number of personnel involved in manufacturing can be significantly reduced, and the manufacturing cost can be reduced, and the product cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing a core removing device according to an embodiment of the present invention.

[Fig. 2] The glass wool fixing part of the core removing device is shown in Fig. 1 II-I.
It is a right view seen along the I line.

FIG. 3 is a right side cross-sectional view of the core material withdrawal portion of the core removal device seen along line III-III in FIG. 1.

FIG. 4 is an enlarged front view for explaining the operational relationship between the glass wool fixing portion and the core material withdrawing portion of the core removing device.

FIG. 5 is a view for explaining a core removing work step by the core removing device.

FIG. 6 is a drawing for explaining the manufacturing process of the glass wool cylinder.

FIG. 7 is a front cross-sectional view showing an example of a silencer including a glass wool cylinder as a sound absorbing material.

[Explanation of symbols]

1 Glass Wool Fixing Device 2 Core Material Extracting Device 3 Control Device 5 Chuck Unit 6 Driving Unit 6a Cylinder Body 6b Piston Rod 10 Fixed Side Chuck 10a Fixed Side Chuck Receiving Surface (Chuck Surface) 11 Movable Side Chuck 11a Movable Side Chuck Reception Stop surface (chuck surface) 14 Elastic member 20 Rotating part 21 Extracting part 23 Core metal locking part (core material locking part) 24 Rotating actuator 24a Actuator body 24b Rotating shaft 26 Rotating arm 31 Moving stand 40 Guide part 41 Cylinder device 41a Cylinder body 41b Piston rod 42 Guide rail 43 Traveling guide G Glass wool cylinder S Silencer P Cylinder forming core bar Pa Cylinder forming core bar retaining hole x Core bar retaining part axis X Rotating shaft axis X _P Cylinder forming core bar axis θ Rotating angle range of core bar hook

Claims (8)

[Claims] 1. A device for removing a core material for forming a cylinder from a glass wool cylinder in a manufacturing process of the glass wool cylinder to be installed in a muffler, wherein the glass wool fixing means fixes and supports the glass wool cylinder. And a core material withdrawing means for forcibly rotating the tubular body forming core material around its axis with respect to the glass wool tubular body supported by the glass wool fixing means and withdrawing operation in the axial direction. A core removing device. 2. The glass wool fixing means comprises a chuck portion for chucking and holding an outer peripheral portion of the glass wool tube body, and a drive portion for chucking the chuck portion, wherein the chuck portion is the glass wool tube body. The chuck includes a fixed-side chuck that receives the lower outer peripheral surface of the body and a movable-side chuck that can be opened and closed with respect to the fixed-side chuck and that supports the upper outer peripheral surface of the glass wool cylinder. 2. The core removing device according to claim 1, wherein the receiving surface of the core has an arcuate cross-section forming at least a part of a cylindrical surface that tightly engages with the outer peripheral surface of the glass wool cylinder. 3. The movable side chuck is pivotally supported so as to be swingable with respect to the fixed side chuck, and the drive portion is in the form of a cylinder device. A projecting / retracting operation of a piston rod of the cylinder device. The core removal device according to claim 2, wherein the movable chuck swings to open and close. 4. The core removing device according to claim 2, wherein a chuck inner diameter of a chuck surface formed by the both receiving surfaces is adjustable in accordance with an outer diameter dimension of the glass wool cylinder. 5. The core removing device according to claim 2, wherein the chuck surfaces of the both chucks are made of an elastic member. 6. The core material withdrawing means includes a rotating portion for forcibly rotating the tubular body forming core material about its axis and a withdrawing portion for withdrawing the tubular body forming core material in its axial direction. The rotating part includes a core material locking part that fixes and locks one end of the cylindrical body forming core material, and the locking part is rotationally driven around the axis of the cylindrical body forming core material. A rotary actuator, and the extraction unit includes a guide unit that guides the rotary unit to move parallel to the axis of the tubular body forming core member; and a cylinder device that reciprocates the rotary unit along the guide unit. The core removing device according to claim 1, comprising: 7. The core removing device according to claim 6, wherein the rotating portion includes a sensor that detects a rotating torque that acts on the rotating actuator, and the rotating actuator is drive-controlled according to a detection result of the sensor. 8. The core removing device according to claim 1, further comprising control means for drivingly controlling the glass wool fixing means and the core material extracting means in conjunction with each other.