JPS6034208B2 - Continuous manufacturing method and equipment for insulating jackets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the manufacture of fiber pipes or jackets (insulating bushings, etc.), especially insulating pipes of iron pipes, conduits or similar parts, the jacket being made of fibers, especially glass fibers or rock fibers. and a polymeric adhesive is distributed thereon.

The adhesive can in particular consist of phenol, phenol-formaldehyde resin, urea carbonate or phenolmelamine. The invention further relates to a method in which the sheet material in which the adhesive is distributed is first formed on a rotating mandrel, passed through a drying oven if necessary, to initiate polymerization of the adhesive, and the polymerization is completed in the oven. It is something. The aim of the invention is to produce tubes at high speed, especially in continuous operation, ie to obtain tubes with low specific gravity, high thermal insulation and small external diameter. According to a conventionally known method, the tube, in which the resin has been partially polymerized, is fed to a drying oven where the resin is supported on a mandrel to complete the polymerization. In this conventional method, a large number of mandrels are used. In addition to the inconvenience and difficulty in handling, there was a risk of deterioration near the contact surface of the cannula because it was difficult to control the surface temperature of the contact mandrel in contact with the heated mandrel. .

Furthermore, the mandrel itself, given its small diameter, suffered significant deterioration during processing and handling. According to other known methods, a partially polymerized sleeve mandrel is attached to the resin and immediately moved without proper intermediate treatment to stabilize its dimensions in the polymerization drying oven.

In such a method, the sleeve was deformed immediately after winding and after the mandrel surface was rapidly finished, and the resulting product exhibited poor performance. If the cannula was to be removed after it had sufficiently stabilized on the outer surface of the mandrel, manufacturing would be long and slow. According to the invention, the residence time of the felt formed on the mandrel is reduced to an absolute minimum, and the fully stabilized sleeve is introduced into the polymerization furnace for a minimum time.

The method of the invention is characterized in that it has the following method combination: - In a first step, the fiber felt distributed with adhesive is wound on a heated mandrel, and the temperature of the mandrel and the time of felt winding are is formed when the hard inner surface is in contact with the mandrel to be wound, the polymerization of the adhesive is initiated in the vicinity of the inner surface, - in the second stage the entire outer surface of the product is also formed and the separation from the mandrel is carried out by contact under light pressure with the heated surface to be finished, the temperature of that surface and the time of contact such that a hard surface forms rapidly, polymerization is initiated near its outer surface, and the inner surface and The outside of the outer surface is left incomplete - in the third stage the cannula thus formed is placed in a heated enclosure, allowing free passage of hot gas over its entire surface and throughout its thickness. Uniform polymerization is allowed to occur to a certain degree.

The mode of work is characterized by the following:

- Cutting the felt into a certain length, distributing the adhesive inside the felt and sending it to a forming machine - Wrapping the felt in several layers on a heated mandrel, the temperature of the mandrel is such that the felt initially adheres to the mandrel and hardens. forming the inner surface and allowing the felt to be wound up by the mandrel to rapidly initiate polymerization near the inner surface, - moving the sleeve away from the mandrel, - rotating the sleeve to coat the entire thickness under light contact pressure with the heated surface. The tube is transferred to a device that ensures polymerization of the resin, and the heating temperature is sufficient to polymerize the resin on the outer surface to form a hardened outer surface, smoothing the outer surface and stabilizing the dimensions of the cannula, but not causing polymerization. the temperature is incompletely retained away from the inner and outer surfaces, - the sleeve is placed in a furnace in which the hot gas passes freely over all surfaces and polymerization is uniform to a certain degree throughout the entire thickness of the sleeve; Feed, - cut the ends to determine the length of the cannula at the exit of the furnace, and at the same time cut the entire length of the cannula through a cutting device.

According to another feature of the invention, the cutting operation is carried out according to a defined length, the raw material felt in the form of a continuous strip is subjected to a winding of the felt and, at the end of the winding, a strong tension winding of the felt, especially in the upstream This operation is carried out by blocking the side or accelerating the downstream side, and this operation is repeated regularly to create the necessary successive tears in the felt strip.

According to yet another feature of the invention, the felt is traversed onto the winding mandrel from the tear point to the smooth support material to permit tear-free winding, despite increased acceleration of the felt movement during forming. Increase the diameter of the cannula.

According to a particularly important feature of the invention, the mandrel is
forming a continuous hard inner surface to allow separation of the wraps;
The adhesive is heated to a temperature that allows it to maintain a stable shape and dimensions commensurate with the mandrel after removal, and the adhesive remains unpolymerized in the remainder of the cannula, leaving the entire surface of the mandrel unpolymerized. Allowing removal of the cannula from the mandrel after curing.

According to the invention, the curing of the inner surface takes place within a period of time practically commensurate with the time of winding the felt around the mandrel.

Because of this hardened inner surface, the shaped sleeve is removed from the mandrel immediately after winding, and finishing of the sleeve is carried out simultaneously or after a short time primarily mechanically.

The invention utilizes at least one device that is controlled to contact the sleeve being wound, apply constant pressure, and maintain rotation after releasing the inner surface from the mandrel.

In particular, an important feature of the invention is the use of a large number of rollers arranged around the mandrel to ensure regular winding and good adhesion of the sleeve.

According to another feature of the invention, the cannula, after its formation and separation from the mandrel, is conveyed between two planes, the movement of which rotates the cannula between each other by contact and heats at least one surface. Then, the resin and adhesive forming the outer surface of the sleeve are polymerized. According to an advantageous feature of the invention, the sleeve is sent to a drying oven after the formation of its outer surface, the interior being brought into contact with the exterior wall successively by a translational and rotational movement,
The passage of hot gas ensures uniform polymerization throughout the entire surface and thickness of the sleeve. According to one mode of operation, the contact is made according to the generating genera of the cannula.

According to another feature of the invention, a translational movement in the track direction between the cutting device and the sleeve ensures the cutting of the sleeve along the generating generatrix.

According to one embodiment, the cutting device is mounted integrally with a centering device that is inserted into the center of the cannula and is movable in all axial directions.

The invention also relates to an apparatus for carrying out the method of the invention.

Referring now to the embodiment of the invention illustrated in the accompanying drawings, the apparatus shown in FIG.

- The drying oven 2 is a belt conveyor 3 that carries felt strips 1.
accept.

An adhesive is distributed between the fibers of the strip material. Drying oven 2
is a generally known type and will not be explained in detail. - the device 4 tears or cuts the strip 1 to length;

- the conveyor 5 transports the cut strip; - the device 6 has a rotating mandrel for winding the cut pieces of felt to form a sleeve and polymerizing the inner surface of the sleeve;
a transfer device 7; - a device 8 into which the cannula is fed from the transfer device 7 and for polymerizing and finishing the outer surface of the cannula and the adhesive; - a furnace 9 for completing the polymerization of the cannula; - a green end of the cannula; a cutting device 10 for cutting and giving the desired length; a device 11 for longitudinally tearing the cannula; and a device 12 for packing the cannula.

Apparatus for tearing felt strips (Figs. 2a-2d) This apparatus has four mechanically rotated rollers which are synchronized with the conveyor 5, the downstream rollers 14-14a having a constant tangent. Rotates at directional speed V2.

The upstream rollers 13-13a alternately rotate at a tangential speed V2 and are controlled, in particular, by a timer device. FIG. 2a shows the beginning of the operating cycle of the device, in which a long strip is formed and the front end of the strip 1 is held between the uncoupled and braked rollers 13-13a.

The strip is monitored with a detection device, for example a photovoltaic cell 15. The strip 1 is taken out of the drying oven 2 at a constant speed V and forms a loop upstream of successive and braked rollers 13-13a.

(FIG. 2b) A timer device, whose activation is initiated by a photovoltaic cell 15, starts at a fixed time depending on the length of the fragment and is activated by a roller 13.
~13a is associated with a nostalgic velocity V2.

This picks up the loop (Figure 2c). When the loop is completely lifted, the felt strip is monitored by a photocell 15 and hides the photocell.

Loafs 13-13a are newly stopped and o-ra 14-1
4a applies tension to the felt, and the felt is moved to the roller 13.
-13a and rollers 14-14a (Fig. 2d). The cut pieces are ejected and a new cycle begins. Conveyor for Felt Cut Pieces (Figure 3) The conveyor from the tearing device to the wrapping device on which the felt cut pieces are placed is made of polyamide, and is composed of a smooth woven fabric 16 that slides on the felt without causing any tearing during wrapping. be done.

The wrapping effectively causes the felt to accelerate as the diameter increases during cannulation. The fabric 16 is supported horizontally by a series of small diameter rollers or longitudinal glide pads.

The woven fabric 16 is controlled by a variable motor 18.
is also connected to the rollers of the tearing device. On the side of the winding device for the felt cut pieces, the rear frame supporting the fabric 16 ends in a joint forming a flame, the height of which can be adjusted. The device allows the felt cut pieces to be fed into the correct position for winding. Instead of the woven fabric conveyor, as shown in FIG.
4a, a woven fabric 16, and a transport device comprising height-adjustable rollers 9 can be used.

The speed of the roller and the fabric is accelerated during felt wrapping, and the speed of the roller 4 is controlled by a tachometer generator 18a,
The generator 18a is subordinated to a loaf that cooperates with a felt-wrapped mandrel. Cannula forming device (Figures 4 to 9)
Figure) The device comprises a heating mandrel formed in two parts 20-20a and three rollers 21 parallel to the axis of the mandrel and spaced about 120 degrees around the circumference.

These rollers act as guides and are mechanically continuous with each other and gradually move away from the mandrel axis as the cannulation is formed. The mandrel parts 20-20a are movably mounted in crossbeams 23 arranged inside the protective lid 24. Ball bearing 33 and roller 33a allow translational movement of carriage 22. Rotation of the mandrel 2 halves 20-20a is obtained from the motor 25 via the transmission arm 26. A jack 27 moves the two mandrel sections on the carriage 22. The roller 21 is rotated by a shaft motor 28 via a speed reduction device 29 . The movement of the roller 21 away from the mandrel axis is effected by an articulated arm 30 connected by a connecting rod controlled by a jack 31 and supported by transverse side plates 34. The end of the arm 30 slides within the sliding groove 35. A current collector ring 36 delivers current to the resistor that heats the mandrels 20-20a. This device works as follows.

The ends of the mandrels 20-20a are in contact with each other before the felt cut pieces arrive.

The mandrel is heated to approximately 40,000 ℃. The front end of the felt cut piece contacts and adheres to the mandrel, and the first
Form a winding. Polymerization of the inner surface of the sleeve takes place during winding. The mandrel rotates at a constant speed of about 80 to 800 revolutions per minute and the felt is wound at an accelerating tangential speed. Three rollers 21, which are mechanically connected to each other, move away simultaneously at precise, gradual constant speeds over the forming cannula. At the end of the winding, due to rapid polymerization of the resin on the inner surface, the sleeve is separated from the mandrel but is rotated by rollers 21. When the cannula is completed, the rollers 21 are released and the rotation of the mandrel is stopped. The period during which the rollers 211 are maintained and rotated has the purpose of completing the production of the cannula by finishing the contact with these rollers. At the end of this operation the rollers 21 move away rapidly and the two half mandrels 2
When 0-20a separate, the cannula falls, and immediately after the fall, the rollers 21 gather around the two halves of the mandrel 20-20a, the two halves of the mandrel are returned to the connected position, and rotation is simultaneously resumed. A new cycle of winding can begin. The cannula emerging from the device has a hard smooth inner surface obtained by contact of the felt with the heated mandrel;
The outer surface has undergone a first smoothing by the action of rollers 21.

The operating cycle of the mandrel and o-la can be controlled by a photovoltaic cell that monitors the felt cut piece fed in the fabric 16, which starts the cycle after a wait that can be controlled as a function of the photovoltaic-mandrel stroke.

Device for transferring the sleeve from the forming device to the outer surface polymerization device (FIG. 10) This device receives the dropped sleeve lb into a trough 40 arranged horizontally below the winding device.

The trough 40 is constructed integrally with a support frame 41 articulated on a shaft 42 and pivoted on a jack 43. At the end of the operation of the jack 43, the cannula, supported for its entire length in the trough 40, moves the trough so that it is transferred laterally onto the belt of the external surface polymerizer. Cannula outer surface polymerization device (Fig. 11 and 12)
This device includes a support frame 44 in the form of a double gate, on the top of which is provided a jack and a method for raising a heating plate 45 having electrical resistance inside.

This lifting device includes a speed reducer 46 and four screw jacks 4.
7 and are controlled simultaneously. jack 47
is connected to the heating plate 45 by a handle 48 which is adjustable in length and can be articulated on the heating plate at a fulcrum 49. The heating plate 45 is supported horizontally by a jack 47. A conveyor belt 50 mounted on a variable motor 51 and stretched horizontally between two rollers 52 is provided at the bottom of the apparatus.

The upper running portion of the belt 50 is supported by a small diameter roller 53. Two chains fixed to the belt guide the belt. The temperature of the heating plate 45 is approximately 400 oo.

The mantle lb sent by the transfer device is connected to the belt 50 and the heating plate 45.
It is rotated under light pressure against the heating plate under the action of a belt.

As a result, the outer diameter is adjusted and the shape of the cannula is stabilized. On the other hand, the temperature of the hot plate 45 causes polymerization of the outer surface of the sleeve, giving it a slight finish that improves its appearance and eliminates the need for polishing. Tube polymerization drying oven (Figures 13 to 16f) After leaving the smoothing device, the barrel is put into the drying oven 9, and is heated to approximately 2,500 ml.
Polymerization was carried out at 0.

Complete uniform processing to minimize fumes and gas emissions. This heat treatment in the furnace ensures that the sleeve is transported without distortion, avoids peeling of the outer layer, and avoids impact and friction that may damage its appearance. On the other hand, during this passage through the furnace, the sleeve is completely straightened over its entire length and rotated about its axis to ensure uniform heat treatment. Immediately after exiting the smoothing device, each cannula is received in a support elevator having a gutter 54 integral with the camphor of the jack 56, in order to maximize the use of thermal calories through contact with the hot plate, and the presence of the cannula is detected by a photovoltaic cell. records and orders transport to the upper part of the furnace.

During vertical transport, the lateral position of the sleeve is corrected by sliding of the receiving member. At the end of the jack's movement, the gutter 54 swings up and down and the mantle rotates within the furnace. The inlet 61 is jacked and the cannula is briefly stopped in front of the inlet. Opening the inlet is instantaneous and minimizes the loss of heat within the furnace. The residence time of the sleeve in the furnace is thereby limited, and the furnace, according to the illustrated embodiment, has a support layer of five levels.

At each height, the layer of the transverse tube 63 is the pivot axis 64 of the curved shaft 65 (
14).

The ends of the tube 63 are guided vertically in a gap 66 provided in the side surface 67. The angular release of the pivot axis 64 causes the tubes to form sinusoidally progressing layers. According to the embodiment, it is represented by the steps of a curved shaft having six pivot axes spaced apart by 60° in the angular direction. The curved shaft 65 is a variable motor 68
(Fig. 13) from the small gear 7 of the curved shaft 65 via the chain 69.
It is constantly rotated to 0.

Due to the continuous rotation of the curved shaft 65, the layers of the sinusoidal step formed in the tube 63 are continuously deformed in the same step and during the same swing.

This results in a dual rotational and translational movement of the cannula. 16th
Figures a through 16f show a single cannula moving with rotation of the shaft, each figure showing 60 degrees of successive rotational positions of the shaft.

The cannula is maintained in the sinusoidal depression by its own weight during the corrugation and rotates about its axis. Each layer has two curved shafts 65, the movement of which causes the cannula to advance along the length of the furnace.

After the last tube crosses one layer, the cannula drops onto the next higher layer of tubes and passes through it in the same way as the previous layer. It is moved horizontally in the same state, but in the opposite direction. The cannula is transferred from the bottom layer to the inclined surface 71 while rotating. Heating inside the drying oven is done by a combustion gas burner 72 installed on the floor 73 of the oven.
A small lid 74 made of non-oxidizing metal is provided above it to prevent localized overheating in the lower layers of the furnace.

(FIG. 13) A thin perforated metal plate 75 is provided parallel to the top of the lid 74 at a distance so that the heated air rises over the entire height of the furnace and is evenly distributed. Green end cutting device for the cannula (Fig. 17). The cannula leaving the furnace is conveyed by gravity onto an elevator consisting of two chains 80 and to which a pallet 81 is attached.

The chain is stretched between pinions 82 and 83, and pinion 83
is driven by a deceleration motor 84. Fixed lateral guides 85 are provided on each side of the chain to hold the cannula in position as it moves to the right or left. The device is also equipped with a lower guide consisting of a metal plate 90 which is in the plane of the laces of the descending chains 80 and supports them during the passage of the cannula. The board 9
0 is bent at the top to form an inclined surface 91. In addition to the guide, an upper guide consisting of two rails 92 is provided parallel to the plate 90'. The distance between these rails and the metal plate 90 can be adjusted using two members 93 and 94.
3 is a wheel 95, and a member 94 is attached to a clamp 96. At the exit of the guide 85, the end of the cannula contacts two circular saws whose shafts are controlled by a motor to cut to the desired length. The cut green end is discharged by gravity into the groove 87, and the cannula is forced along its length to reach the top of the elevator and swing on the ramp 91 in the direction of the next device.

Mantle cutting device (Figs. 18 to 26) The mantle is sent to a diabolo-shaped loaf conveyor 102 by the device shown in FIG. 18, which has a stopper 100 and a sliding member 101, and the height of the conveyor Adjusted to precisely match the axis of the blade handle of the device.

This cutting device is equipped with a round bar 103, and a triangular knife is attached in the diametrical plane by simple formation.
The triangular point is oriented in the direction of the cannula supply and the base is asymmetrically attached to the round-like shaft, forming section 104a, cutting through the entire thickness of the cannula, and section 104b not cutting.

The pointed end 105 of the round bar 103 engages the cannula when it reaches the cutting device, and the round bar 103 is attached to the underframe 1 with a support member 106.
It is attached to 07.

Two contact sides on either side of the cutter are constructed with running belts 108, and a rail flange 109 is placed between the belts 108 to resist the pressure exerted by the cannula. The driving roller of the belt 108 is rotated by a variable motor 112 provided within the underframe 107. The distance between the belts is controlled by a suitable device provided on the underframe 107 and adjusted by a handle 113. The movement of the belt 109 carries the cannula to the cutting device where the blade cuts the slits 114 through the entire thickness of the cannula, and the slits 115 are made in only a portion of the thickness (FIG. 21).

These slits allow the cannula to open during use, and the slits 115 weaken the cannula material sufficiently to act as a hinge and aid the cannula in opening. In the form shown in FIG. 22, the blade of the cutting device is arranged such that its portions 104a and 104b cut only a portion of the thickness of the cannula. The cutting device is a transport vehicle 116 placed in front of the blade portion 104a.
This creates a cut in only a limited part of the thickness of the cannula. This slit may be in the plane of the cut made by section 104a of the blade (FIG. 23), or it may be cut at an angle (FIG. 24). In the first case, the cutting odor shown in Fig. 19 causes the cutting, and in the second case, the cutting smell
8 is provided apart from the cutout 114a (FIG. 25),
The distance between these two cracks should be small enough to allow the material to break when opening the cannula. The cuts made on the outer surface by the roll blade 116 allow easy cutting without forming unevenness on the cut lip. Instead of a roll blade, it is possible to obtain a blade 104a by arranging the surface of the blade 104a or a blade having a certain angle to the surface like a roll blade. The cutting tool can include multiple knives.

Figures 26 to 28 are 2, 3, or 4 sheets, respectively.
The cross-section is shown with blades, the use of which allows deployment of the cannula. Figure 29 shows the development of a cannula with a four-blade split. In contrast to the known device for cutting and splitting a known sleeve made of iron, the device of the present invention described above is extremely simple and does not produce any striations and can form the joining side surface as shown in FIG. 25. can be obtained.

This invention has the following embodiments.

1. A method as claimed in the claims, in which: - a felt is cut into defined lengths, and an adhesive is distributed within the felt for feeding into a forming device; - the felt is initially attached to a hard inner surface; wrapped in layers on a heated mandrel to sufficiently polymerize and separate the felt to form, the rapidly resulting polymerization being initiated in the vicinity of the inner surface; - removing the cannula from the mandrel; (1) Transfer the cannula to a device for polymerizing the resin through its entire thickness, and bring the cannula itself under light pressure into contact with a surface heated to a temperature sufficient to effect polymerization sufficient to form a hard outer surface. The tube rotates while rotating, increasing the smoothness of its outer surface and the stability of the dimensions of the tube, and the polymerization between the inner and outer surfaces is an incomplete and gradual polymerization. The gas is passed freely over its entire surface to achieve a uniform degree of polymerization throughout the thickness, - the length of the cannula is determined by cutting the green end at the exit of the furnace, and cutting simultaneously over the entire length of the cannula; Pass through the device and perform cutting.

2. In the method described in item 1 above, the tearing of a certain length of the original felt, the impregnation with adhesive, and the continuous supply of the strip material are the same as the winding of the felt and rapid winding, especially in the upstream and downstream stages. The operation is repeated regularly in order to obtain the required tearing in the felt strip.

3. In the method described in item 2 above, tearing the felt strip forms a loop, applying a sudden tearing tension to the felt, and causing the felt to tear.

4. In the method described in each of the above items, the felt is fed to the rotating mandrel from the tear point mandrel, and is allowed to slide in contact with the smooth support material without causing tearing during wrapping, so that the lateral acceleration of the felt movement Nevertheless, the diameter of the cannula being formed is increased.

5. In the method described in each of the preceding paragraphs, the mandrel allows the first winding, forms a continuous hard inner surface, maintains a corresponding shape after being removed from the mandrel, and the adhesive is bonded to other parts of the sleeve. The portions do not fully polymerize and are removed from the mandrel after their inner surfaces have fully hardened, allowing removal of the cannula.

6. In the method of item 5 above, at least the pressure device controls the movement, contacts the winding mantle, applies a constant pressure, and maintains rotation after the inner surface is detached from the mandrel.

7. In the method described in paragraph 6, a plurality of.

A roller is centered on the mandrel to provide regular winding and good adhesion of the cannula. 8. In the methods described in each of the above sections, the mandrel separates from the mandrel after winding, and the mandrel falls due to gravity.

9. In the method described in each of the preceding paragraphs, the cannula is formed and removed from the mandrel and then sent between two planes, the two planes moving relative to each other to rotate the cannula, and at least one surface being heated. In the method described in item 9, one plane moves in translation and the other plane is fixed.

]1 In the method described in Part 1, only the fixed plane is heated.

12 In the method described in each of the preceding paragraphs, after the outer surface has been formed, the jacket tube is sent into a furnace, in which translational and rotational movements are carried out by successive contacts from the outer wall, and the entire thickness of the jacket tube is removed by the freely passing hot gas. Uniform resin polymerization is carried out throughout the area.

13. In the method according to paragraph 12, the contact is made along the generatrix of the cannula. 14 In the methods of Clauses 12 to 13, the cannula is alternately moved several times in the length direction of the furnace.

15. In the method described in each of the above items, the cutting of the sleeve is performed along the generatrix line, and is made by an axial translational movement of the cutting device and the sleeve.

16 In the method described on page 13, the cutting device is fixed and attached to a central device inserted into the cannula and moved in the direction of the sea bream.

17 In an apparatus for carrying out the method of the invention, the apparatus for tearing the felt strip comprises two pairs of rollers rotating at the same speed, in synchronism with the belt transporting the pieces after tearing, the downstream roller always rotating. The upstream rollers are connected alternately from the brake, so that the continuously fed felt strip forms a loop and accumulates when the upstream roller is braked, and the loop is absorbed when the roller is braked, When newly braked, the torn felt is between the two pairs of rollers and a new loop is formed upstream.

18 In the apparatus described in the first round, the duration of the braking and coupling cycle, which determines the length of the felt strip pieces, is controlled by a timing device or an auxiliary device for the advancement of the sleeve in the furnace.

19. In the device described in the preceding paragraph, a conveyor, in particular a polyamide belt, conveys the felt strip pieces from the tearing device to the winding mandrel.

20 In the device described on page 19, the underframe supporting the belt terminates in an articulating light section which is adjustable in height near the winding mandrel.

21 In the device described in the preceding paragraph, the rollers that perform felt tearing are accelerated during felt wrapping.

22 In the apparatus described in the preceding paragraph, the forming device consists of a heated mandrel that is rapidly opened and a plurality of rollers are placed in contact with the cannula being formed.

23. In the apparatus of paragraph 22, the mandrel is about 4
Heated to 0000.

24 The mandrel is electrically heated.

25. The apparatus described in the preceding paragraph is provided with two rotating rollers separated by 1200 mm.

26 In the apparatus described in the preceding paragraph, the rollers are mechanically connected to each other and move away simultaneously at a slow speed to apply a constant pressure to the forming cannula.

27. In the apparatus described in the preceding paragraph, a device is provided for stopping the mandrel and the rollers when the felt strip pieces have been completely wound onto the mandrel, the rollers maintaining the position and rotation of the sleeve material.

28 A device shall be provided to rapidly release the rollers after the wrapping of the cannula is completed.

29 The mandrel is made in two parts and is provided with a jack-like device to effect separation and quick opening after winding, and the sleeve is dropped by gravity into the transfer trough.

30 The polymerization and finishing of the resin on the outer surface of the sleeve is carried out by means of a transfer device, in particular a narrow belt, and a heating plate.

31 In the apparatus described in the preceding paragraph, the heating plate is heated to about 40,000 ℃.

32 The heating plate is electrically heated.

33. In the device according to the second skin or paragraph 32, the lifting device is allowed to be brought into exact position with a plate suspended parallel to the top of the belt.

34 In the apparatus described in the preceding paragraph, the mantles are provided with horizontal horizontal bars in which they are immersed without contacting each other, and the camphor wood is moved in the same vertical direction, but not with respect to the next one. The phases are different and the canisters are transferred from one end of the furnace to the other in a rotational movement about their axes.

35 In the device described in the preceding paragraph, one of the cypress wood whose ends are placed on the axis of the crankshaft is separated from the other in the angular direction, and the removal is carried out when the end of the cypress wood is placed on the axis of the crankshaft. Arranged according to a changing sine wave.

36. Apparatus according to paragraph 34 or 39 above, wherein the strips are engaged at their ends into vertical fixed guides.

37. In the apparatus according to paragraphs 34 to 38 above, the furnace has passages at several levels through which the sleeve passes successively from one layer to the other and back from one to the other.

38 In the device described in the preceding paragraph, the passage of the cannula from one layer to another takes place by gravity.

39. The device described in paragraphs 34 to 38 above is provided with a unique drive device for controlling the collection of camphor wood.

40 The device described in items 39 to 3 includes a unique speed reduction device that operates the various arms of the crankshaft by means of a chain and pinion. 41 Pages 3 to 4
In the device described on page 0, a stop member or a movable door stops each cannula parallel to the stock before the cannula is introduced into the furnace.

42 In the apparatus described in pages 3 to 41, heating of the furnace is performed by attaching a gas burner and a deflection plate to the bottom of the furnace.

43 In the apparatus described in items 34 to 42, the temperature of the atmosphere in the furnace is about 25,000.

44 In the apparatus described in the above items 17 to 49, the mantle that has exited the outer surface polymerization device is supplied to the upper layer by a special raising device, and the mantle is placed on the top of the special raising device.
A shaped device is provided to raise the mantle into the furnace.

45 In the apparatus described in paragraphs 18 to 44 above, the cannula leaving the furnace is passed by gravity to a special raising device placed between two lateral guides for centering the cannula, Given the height of the two rotating blades that cut the ends.

46. In the device described in the preceding paragraph, the elevator consists of two chains provided with pallets.

47. In the device described in the preceding paragraph, the cannula whose end is to be cut is supported by parallel flanges of a rising chain belt,
The separation of the flange relative to the belt can be adjusted according to the diameter of the sleeve.

48 In the device described in pages 18 to 4 above, the device for cutting the cannula in the length direction is provided with a triangular thin plate-shaped blade with a pointed end facing in the direction in which the cannula is fed. ,
The blade is fixed to a cylindrical centerpiece with a diameter slightly smaller than the inner diameter of the cannula, and is inserted into the cannula while the blade cuts.

49 In the device described in the preceding paragraph, during the cutting operation the sleeve is maintained on one belt forming a contact side parallel to the axis of the core.

50 In the device described in the preceding paragraph, the distance between the belts is adjusted according to the outer diameter of the sleeve.

51 In the apparatus described in the fourth rice cake period and fifth period, the flange is provided between the running belts.

52. In the device according to paragraphs IQ to 51 above, the sleeve is fed to the cutting device by means of a height-adjustable feeding roller.

53. Apparatus according to claim 51, in which the sleeve is pivoted into alignment with the axis of the roller transport device by the action of elements such as stops and skids before being fed to the cutting device.

54 An intermediate product of small diameter made of felt consisting of a jacket made of insulating fibers, especially glass fibers, and distributed with an adhesive, the inner surface and Industrial products are produced that have hardened and finished outer surfaces.

[Brief explanation of the drawing]

Figures la and lb are side views of the entire device of this invention;
Figures a to 2d are side views of the device for tearing strips of felt and show the operating cycle; Figure 3 is a side view of the device for transporting felt pieces from the tearing device of the winding device; Figure 3a;
4 is a perspective view of the winding device, FIG. 5 is a partial sectional view of the device, and FIGS. 6 and 7 are partial detailed sectional views of the device. Figure 8 shows the arrangement of the rollers and the initial arrangement of the roller synchronous separation mechanism,
9 is a perspective view of the roller rotation control arrangement; FIG. 10 is a side layout view of the device for superposing the outer surface of the wound sleeve and transferring it to the finishing device; FIG. 11 is a side view of the finishing device; The figure is a plan view, Figure 13 is a side view of a device for taking out from the polymerization furnace, Figure 14 is a perspective view and a partial sectional view of a device that rotates and transfers the cannula in the furnace, and Figure 16a is or 16th f.
The figures show the stages of movement of the cannula in the furnace, FIG. 17 is a side view of the device for cutting the ends of the cannula, FIG. 18 is a perspective view of the device for pivoting the cannula, and FIG. FIG. 20 is a side view of a part of the device shown in FIG. 19; FIG. FIG. 22 is a perspective view of another embodiment of the cutting device, the second
3, FIG. 24 is a cross-sectional view of the cutting device, FIG. 25 is a cross-sectional view of a cutting insulating tube with iron-filled sides, FIGS. 26 to 28 are cross-sectional views of a knife with multiple blades, and FIG. FIG. 29 is a developed cross-sectional view of an insulating tube cut with a plurality of blades. 1... Strip material, 2... Drying oven, 3...
...Conveyor belt, 4. ...Tearing device, 5.
... Conveyor, 6 ... Wrapping device, 7 ...
...Transfer device, 8...Polymerization finishing device, 9.
...furnace, 10...cutting device, 11...
・Tearing device, 12...Packing device, 13,1
3a.... Roller, 14, 14a... Roller, 15...・
・Photovoltaic cell, 16... Woven belt, 18...
...Motor, 18a... Generator, 19...
・Roller, 20, 20a... Mandrel, 21... Roller, 22... Carriage, 23... Cross beam, 2
4...Protective lid, 25...Motor, 2
6...Transmission arm, 27...Jack, 2
8...Motor, 29...Reduction device,
30...Arm, 34...Horizontal flange, 40...Gutter, 41.
...Support frame, 43...Jack, 44.
...Support frame, 45...Heating plate, 47...
... Hoist, 50 ... Conveyor belt, 5
1 """ motor, 52, 53...roller, 54...gutter, 63...pipe, 64...swivel shaft, 65...curved plate wheel, 80...chain, 82, 83...pinion,
84...Motor, 102...Roller conveyor, 103
...Round bar, 104a...Blade, 108...Belt, 109...Flange, 112...Motor. (G
．． 'j 斤G. 'b Hit G. 2a CG. 2 upper CG. 2C Hit G. 2d [G. 3 hG. 3a million G. Imman G. ku stroke G,6 (G.7 stroke G.80,000G.90,000G.'○ forceG.'0 汀G.J' 斤G.}20,000G.8 ho,'40,000G.20 stroke G.2' ri G.'5a (G.'5 also CG. body hit c. J6〆CG. J62 CG.'5f stroke G-'9 catty G.'7 (G.'8 [c.22 (G.23 (G.24 (G.2 evening) (G.26 (G.27 stroke G.2# hc.29

Claims (1)

[Claims] 1. A felt 1a of fibrous material coated with an adhesive is wrapped in a tubular shape around a heated rotating mandrel 20 so that the inner surface hardened during wrapping comes into contact with the mandrel. A process for the continuous high-speed production of tubes of fibrous material in which the tube is formed to the required wall thickness and passed through a furnace 9 for final polymerization over the entire tube wall thickness. After being removed from the heated mandrel 20,
The tube is brought into light pressure contact with the heating surface 45 and simultaneously rotated to smooth and polymerize the outer surface of the tube, and then the tube 16 is transferred to a furnace 9 at a temperature lower than that of the heating surface 45 and completely restrained therein. A method characterized in that the tube is kept horizontal throughout its entire length and rotated about its axis to achieve complete and uniform hardening. 2. A rotating mandrel for forming a wrapped tube from felt of a fibrous material coated with an adhesive, a device for curing the inner surface of the tube and smoothing and hardening the outer surface, and a rotating mandrel for forming the tube after being removed from the mandrel into a heating furnace. In an apparatus for continuous high-speed manufacturing of fiber material tubes, the apparatus comprises:
The device for smoothing and hardening the outer surface of a tube has a heating surface 45 in light pressure contact with the tube, and the heating furnace 9 has a plurality of support layers, each support layer having an end with a curved shaft 65. It consists of a transverse tube 63 placed on a pivot shaft 64, which is rotated by moving it around its axis without restraint in the heating furnace in order to achieve complete and uniform hardening of the tube. is heated by a gas burner.