CN213804414U - Hot-blast tentering setting machine oven with liftable pierce through heating device that induced drafts - Google Patents
Hot-blast tentering setting machine oven with liftable pierce through heating device that induced drafts Download PDFInfo
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- CN213804414U CN213804414U CN202022378076.1U CN202022378076U CN213804414U CN 213804414 U CN213804414 U CN 213804414U CN 202022378076 U CN202022378076 U CN 202022378076U CN 213804414 U CN213804414 U CN 213804414U
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Abstract
The utility model discloses a hot air tentering and setting machine oven with a liftable penetration heating air suction device, which comprises an oven body, an upper hot air box, a lower hot air box, an air suction platform lifting device, a hot air generating chamber and an air return chamber; a heating cavity is formed between the upper hot air box and the air suction lifting device; the edges are held by a chain needle plate type clamping mode, so that the whole non-woven fabric is heated and shaped in a flat net constant-width state, the transverse free shrinkage is reduced, and the surface of the fiber board is hot-ironed at high temperature after shaping, so that the surface of the produced fiber board is smooth and flat without wrinkles; the hot air suction device with the lifting function is installed, hot air is blown in two directions and heated to be changed into a one-way up-blowing and down-suction mode, the efficiency of hot air application is greatly improved, and the ideal heating effect is achieved while the production cost is not increased.
Description
Technical Field
The utility model relates to a hot-blast non-woven firing equipment, concretely says so and relates to a hot-blast tentering setting machine oven with liftable piercing through heating device that induced drafts belongs to non-woven firing equipment technical field.
Background
The hot-air non-woven fabric belongs to one of hot-air bonded (hot-rolled and hot-air) non-woven fabrics, and the hot-air non-woven fabric is a non-woven fabric which is formed by combing fibers into a web, penetrating the web by hot air on drying equipment, and heating the web to bond the web and a product thereof. In through-air bonding, it is common to incorporate a certain proportion of low-melt binder fibers into the web, or to use bicomponent fibers, or to apply a certain amount of bonding powder to the web prior to its entry into the drying chamber by a dusting device. The melting point of the powder is lower than that of the fiber, and the powder is melted quickly after being heated, so that bonding is generated among the fibers. The fiber web made of thermoplastic synthetic fiber can be reinforced by thermal bonding, such as terylene, chinlon, polypropylene fiber and the like commonly used in the production of non-woven fabrics at present. Because fibers such as palm, hemp, wool, cotton, viscose and the like do not have thermoplasticity, a fiber web consisting of the fibers alone cannot be reinforced by heat bonding, but after a certain proportion of thermoplastic fibers are added into the fiber web, the fiber web can be reinforced by adopting a hot air bonding technology.
In through-air bonding, air is the heat carrier and transfers heat to the fibers as the air penetrates the web. Thus, it is first ensured that the hot air is not damaging to the structure of the web during the circulation flow. In the initial stage of the fiber web entering the drying room, the fibers are combined only by cohesive force, and if the introduction mode and the speed of hot air are not proper, the structure of the fiber web is damaged. Secondly, the fiber web must be heated uniformly, so that all properties of the reinforced fiber web are uniform and stable. The temperature deviation of each part should be controlled within the range of +/-1.5 ℃. The common drying equipment is mainly used for drying moisture, the heating temperature is generally low, and the common drying equipment is not suitable for hot air bonding production. In addition, enough heating time of the fiber web is ensured, the low-melting-point fibers of the surface layer and the inner layer of the fiber web are in a molten state to obtain good bonding effect, and the non-woven product cannot be subjected to surface-interior delamination. When the existing flat net heating oven is used for preparing a non-woven fiber product with certain thickness, density and hardness, the drying room can be lengthened to the required length because the fiber net cannot be folded. Therefore, the manufacturing cost is inevitably increased, the land occupation is increased, and the competitiveness of enterprises is influenced. In addition, because the non-woven product has a plurality of fiber components, when the difference of shrinkage rates between fibers is large, or when the difference of hardness required by the front side and the back side is large, wrinkles are generated on the surface of the product after heating and shaping under the condition of relaxation and are difficult to eliminate, and the quality of the product is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the above technical objects of the present invention are achieved by the following technical solutions:
a hot air tentering setting machine oven with a liftable penetration heating air suction device comprises an oven body, an upper hot air box, a lower hot air box, an air suction platform lifting device, a hot air generating chamber and an air return chamber; a heating cavity is formed between the upper hot air box and the air suction lifting device;
the two ends of the upper hot air box are transversely fixed with the wall of the oven body, a burner is arranged on one side of the hot air generating chamber, hot air heated by the burner upwards enters the hot air guiding device through an air duct and is ejected out of an air outlet to enter a heating cavity formed between the upper hot air box and the lower hot air box;
the lower hot air box comprises an air suction platform, an air suction plate is arranged on the surface of the air suction platform, the lower part of the air suction plate is connected with the hot air box, and hot air sprayed out of the upper hot air box passes through the fiber web in the middle of the heating cavity and is sucked into the hot air box;
the air suction platform lifting device comprises a lifting platform, the upper part of the lifting platform is connected with a hot air box, lifting adjusting devices are arranged at two ends of the lifting platform along the length direction of the oven, the lifting adjusting devices are fixed on a partition plate in the oven, a cavity is arranged in the lifting platform, the upper end of the cavity is connected with the hot air box, the lower end of the cavity is connected with a sealing device which can stretch up and down through a lower air box, and the lower part of the sealing device is connected with an air return chamber; a centrifugal fan is arranged on one side of the air return chamber, and return air entering the air return chamber is sent into the opposite hot air generating chamber for heating through an air duct by a fan impeller of the centrifugal fan; a net curtain made of Teflon material which moves circularly is arranged between the air suction platform and the non-woven fiber felt.
The chain needle plate type clamping device comprises a pair of platforms arranged at the upper part of a machine base, nuts are arranged below the platforms, a lead screw is matched with the nuts at two ends, and the middle position of the lead screw is arranged on a shaft seat; one end of each of the tenter pin plate rails on the left side and the right side is fixed on the platform, and the lower part of the other end of each of the tenter pin plate rails is provided with a roller which is arranged on the supporting platform; a chain type needle plate is arranged above the stenter needle plate track, and the chain type needle plate forms a closed loop around a needle plate wheel; the screw rod is fixed with the driven wheel, and the driven wheel is connected with the driving wheel through a chain; the tentering pin plate rail penetrates through the heating oven, and pin plates at two ends move circularly along the guide rails.
The net curtain driving mechanism comprises a machine base and a driving motor, wherein the driving motor is connected with a driving wheel through a speed reducer, and a variable speed wheel coaxial with the driving wheel is connected with a driving roller fixed on the machine base through a chain; the net curtain is wound on the driving roller, the net curtain guide roller and the net curtain running guide roller.
Still include deviation correcting device: the device comprises a pair of deviation correction rollers arranged between a driving roller and a net curtain guide roller, wherein a sliding platform is arranged below the deviation correction rollers, and the lower part of the sliding platform is arranged in a sliding groove of a base through a sliding block; a mesh curtain deviation rectifying roller adjusting cylinder is arranged on the inner side of the base, and a piston of the mesh curtain deviation rectifying roller adjusting cylinder abuts against the sliding platform;
the inboard of base sets up the net curtain and rectifies a roll adjustment cylinder, and the left and right sides of fabric advancing direction has set up a pair of net curtain that fixes on the base and has visited the limit sensor, and the net curtain visits the limit sensor and surveys the transmission of signal for the controller, and the controller is according to the extension of the piston end of signal adjustment net curtain rectification roll adjustment cylinder.
The drying oven also comprises an air exhaust mechanism arranged on the oven body, and moisture generated in the oven is exhausted through the air outlet and the air duct by the rotation of the fan and the fan impeller arranged at the top of the oven body.
The sealing device comprises a flange connected with the upper hot air box and a flange fixed with the air return chamber, a plurality of connecting and fixing holes are formed in the surface of the sealing device, and the other ends of the two flanges are hermetically connected with a high-temperature-resistant, high-pressure-resistant and anti-aging flexible telescopic material to form a sealed ventilation cavity.
The utility model has the advantages that: the utility model provides a tentering setting machine oven for preparing fiberboard, when preparing thicker and heavy non-woven products, like plant fiber board, polyester fiber board, the compound non-woven fiber felt of multilayer and panel, adopt chain faller formula clamping device to grip limit portion for whole non-woven fabrics adds heat setting under the open net constant width state, reduces horizontal free shrinkage, adopts high temperature heat to scald to the fiberboard surface after the design, makes the smooth no fold that levels of fiberboard surface that produces. In addition, under the condition that the length of the stentering and shaping drying oven is not increased, the internal structures of a plurality of sections or all drying ovens of the plurality of drying ovens are changed, a hot air suction device with a lifting function is installed, the hot air bidirectional blowing heating is changed into a one-way upward blowing and downward suction mode, the height of the suction table top is lifted according to needs, the hot air drying heating is changed into a penetrating type heating mode, the hot air application efficiency is greatly improved, the ideal heating effect is achieved, and meanwhile, the production cost is not increased. In order to reduce the friction force between the non-woven fiber felt and the surface of the air suction plate and prevent the non-woven fiber felt from being accidentally drawn due to the resistance caused by downward air suction when the non-woven fiber felt moves forwards, a Teflon net curtain capable of circularly moving and a deviation correcting device for the movement of the net curtain are arranged between the air suction platform and the non-woven fiber felt.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view showing the cooperation of the elevating suction platform with the tenter frame pin plate and the upper and lower hot air boxes;
FIG. 4 is an enlarged view of the sealing device;
FIG. 5 is a view showing the structure of the driving and deviation correcting device of the net curtain;
in the figure: 1-oven box body, 1-1 oven inner baffle plate and 1-2 supporting platform; 2-upper hot air box, 21-separation net, 22-air channel, 23-hot air guiding device, 24-air outlet; 3-lower hot air box, 30-air suction platforms 30, 31-air suction plates, 32-hot air box, 33-Teflon net curtain, 34, 35, 36 and 37-net curtain running guide roller; 4-air suction platform lifting device, 41-lifting platform, 42-lifting adjusting device, 43-air box, 44-filter screen, 45-sealing device, 451, 452-flange, 453-flexible telescopic material, 454-cavity, 455-connecting fixing hole; 5-a net curtain transmission and deviation correction device, 50-a base bracket, 51-a driving roller, 511-a gear, 512-a chain, 52-a net curtain guide roller, 53, 54-a deviation correction roller, 55-a base, 551-a bearing seat platform, 552-a bearing seat guide sliding groove, 56-a net curtain edge detection sensor and 57-a net curtain deviation correction roller adjusting device; 6-driving mechanism, 60-machine base, 61-driving motor, 62-speed reducer, 63-driving wheel, 631-coaxial speed changing wheel, 632-chain, 633-driven wheel, 64-chain, 65-platform, 651-driven wheel, 66-needle plate wheel, 67-sensor, 68-shaft seat and 69-driving rod platform; 7-a hot air generating chamber, 71-a high temperature generating device, 72-a burner; 8-air return chamber, 81-centrifugal fan, 82-fan impeller and 83-air duct; 9-an exhaust mechanism, 90-an air outlet, 91-an air duct, 92-a fan and 93-an air impeller; 10-heating chamber; 11-safety guards, 111-tenter pin rails, 112-chainpin clamps.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
1. The utility model provides a hot-blast tentering setting machine oven with liftable pierce through heating device that induced drafts, includes oven box 1, goes up hot-blast case 2, and lower hot-blast case 3 induced drafts platform elevating gear 4, web curtain transmission and deviation correcting device 5, actuating mechanism 6, hot-blast emergence room 7, return air room 8, exhaust mechanism 9, tentering faller operation protection casing 11, go up hot-blast case 2 and induced drafts and formed heating chamber 10 between the elevating gear 4. (FIG. 1)
2. The two ends of the upper hot air box 2 are transversely fixed with the wall of the oven body (figure 3), a high-temperature generating device 71 is arranged on one side of the hot air generating chamber 7, hot air heated by a burner 72 upwards passes through the partition net 21, the air duct 22 enters the hot air guiding device 23, and the hot air is uniformly sprayed out from the air outlet 24 after being guided to enter the heating cavity 10 formed between the upper hot air box 2 and the lower hot air box 3.
3. The lower hot air box 3 comprises an air suction platform 30 (fig. 1 and 2), an air suction plate 31 consisting of a plurality of air suction pipes is arranged on the surface of the air suction platform, an opening for hot air to enter is formed in the surface of each air suction pipe, the lower part of each air suction plate is connected with the hot air box 32, and hot air sprayed from the upper hot air box passes through a fiber net in the middle of the heating cavity and then is sucked into the hot air box 32. When preparing the thick non-woven fiber felt and the products thereof, in order to increase the penetrating power of hot air, the air suction platform can be lifted, and simultaneously plays a role in supporting the non-woven fiber felt, in order to reduce the friction force between the non-woven fiber felt and the surface of the air suction plate and prevent the non-woven fiber felt from accidentally drafting due to the resistance caused by downward air suction when the non-woven fiber felt moves forwards, a net curtain 33 made of Teflon material and capable of moving circularly is arranged between the air suction platform and the non-woven fiber felt. Two pairs of net curtain running steering guide rollers are fixed at the front end and the rear end of the air suction platform along the advancing direction of the non-woven fiber felt, the front end runs steering guide rollers 34 and 35, the rear end runs steering guide rollers 36 and 37, and the net curtains are connected with a transmission and deviation-rectifying device at the outlet end of the oven to form a closed loop.
4. The air suction platform lifting device 4 comprises a lifting platform 41 (shown in figures 1 and 3), the upper part of the air suction platform lifting device is connected with the hot air box 32, lifting adjusting devices 42 are arranged at two ends of the air suction platform along the length direction of the oven, the lifting adjusting devices 42 are fixed on a partition plate 1-1 in the oven, a cavity is arranged in the lifting platform 41, the upper part of the cavity of the lifting platform is connected with the hot air box, the lower part of the cavity is connected with a sealing device 45 which can stretch up and down through a lower air box 43, the lower part of the sealing device is connected with an air return chamber 8, and a filter screen 44 which can be drawn out for cleaning is arranged between the lower part of the sealing device and the air return chamber. A centrifugal fan 81 is installed on one side of the air return chamber, and the return air entering the air return chamber is sent to the opposite hot air generating chamber 7 for heating through a wind channel 83 by a rotating fan impeller 82.
5. The drying oven also comprises a net curtain transmission and deviation correction device 5 (shown in figures 1 and 5), and the net curtain transmission and deviation correction device is arranged at the outlet of the drying oven. The device comprises a base support 50, wherein a driving roller 51 is installed on the base far away from an outlet end, a net curtain guide roller 52 is arranged at the nearest end away from the outlet end, shaft sleeves at two ends of a shaft are fixed on the base, a pair of deviation rectifying rollers 53 and 54 are arranged close to the guide roller, the shaft sleeves at two ends of the shaft are respectively installed on a sliding platform 551, and the lower part of the sliding platform is connected with a base 55 provided with a sliding groove through a sliding block 552. A pair of net curtain edge-detecting sensors 56 and a pair of net curtain deviation-rectifying roller adjusting devices 57 are also arranged on the left and right sides of the advancing direction of the fabric. When the net curtain on one side deviates, the edge-detecting sensor sends a signal to a controller of the net curtain deviation-rectifying roller adjusting device, and the deviation-rectifying roller on one side simultaneously moves back and forth along the sliding platform to rectify the deviation of the net curtain in the circulating motion. The net curtain transmission and deviation correction mechanism is characterized in that a driving roller 51 is arranged at the farthest end away from the outlet of the oven, a gear 511 is arranged on one side of the driving roller, and the driving roller is connected with a driving mechanism 6 through a chain 512 to obtain power so as to drive the net curtain to move.
6. The driving mechanism 6 (fig. 1, 2 and 3) comprises a base 60, a driving motor 61 connected with a driving wheel 63 through a speed reducer 62 connected with the driving motor, a coaxial speed-changing wheel 631 of the driving wheel connected with a driven wheel 633 fixed on the base through a chain 632, the driven wheel 633 connected with a gear 511 coaxial with the driving wheel 51 through a chain 512, thereby obtaining power to drive the mesh curtain 33 to operate in linkage.
The structure of the chain needle plate type clamping device 112 is as follows: a pair of platforms 65 are arranged at the upper part of the machine base 60, the driving wheel 63 is connected with a driven wheel 651 through a chain 64, the driven wheel 651 is coaxially fixed with a transmission rod 69, the transmission rod 69 is a screw rod, the middle position of the transmission rod 69 is axially fixed by a shaft seat 68, the two ends of the transmission rod are matched with nut holes at the lower ends of the platforms 65, and the distance between the two platforms 65 can be adjusted along with the rotation of the screw rod; one end of each of the tenter pin plate rails on the left and right sides is fixed on the platform 65, and rollers are arranged on the lower portion of the other end of each of the tenter pin plate rails and arranged on the supporting platform 1-2; a chain type needle plate is arranged above the stenter needle plate track, and the chain type needle plate forms a closed loop around a needle plate wheel; the screw rod is fixed with the driven wheel, and the driven wheel is connected with the driving wheel through a chain; the tentering pin plate rail penetrates through the heating oven, and pin plates at two ends move circularly along the guide rails. The platform 65 is also provided with 2 tenter pin rail circulating motion sensors 67 for limiting the operation of the tenter pin rails.
The rollers of the chain needle plate type clamping device 112 can move horizontally on the supporting platform 1-2, and can uniformly straighten fibers of different materials to ensure the smoothness of the surface of the material. The tenter bar track runs through the heating oven and circulates around the pin wheel 66.
7. The sealing device 45 (fig. 4) comprises a flange 451 connected with the upper hot air box and a flange 452 fixed with the air return chamber, wherein the surfaces of the flanges are provided with a plurality of connecting and fixing holes 455, and the other ends of the two flanges are hermetically connected with a high-temperature-resistant, high-pressure-resistant and anti-aging flexible telescopic material 453 to form a sealed ventilation cavity 454. The silica gel glass fiber composite cloth adopted by this embodiment 453 is soft, high temperature resistant and anti-aging, and can be freely stretched and contracted along with the up-down adjustment of the lifting platform.
8. The drying oven further comprises an air exhaust mechanism 9 (figure 1) arranged on the oven body, and moisture generated in the drying oven is exhausted through the air outlet 90 and the air duct 91 by the rotation of a fan 92 and an air impeller 93 which are arranged on the top of the oven body.
The concepts related to directionality or directionality in the description of the present embodiment, up, down, left, right, front, and rear, are based on the state shown in fig. 1, and thus should not be construed as limiting the technical solution of the present invention.
As shown in fig. 2, in the embodiment of the present technical solution, the internal structure of the last two drying ovens among the four drying ovens is changed, and a hot air suction device with a lifting function is installed, and by adjusting the lifting adjusting device nuts 42 on the lifting platforms 41 located on the left and right sides of the drying oven in the advancing direction of the nonwoven fiber web felt, the air suction platform 30 can be lifted and dropped, so that the bidirectional blowing heating of hot air is changed into a unidirectional upward blowing and downward suction manner, and the drying heating of hot air is changed into a penetration heating manner. The other adjusting mode of the lifting platform 41 can adopt a driving mode of a hydraulic cylinder and can also adopt a screw rod and nut structure for adjustment.
As shown in fig. 5, a pair of curtain edge-detecting sensors 56 fixed on the base 55 in the web deviation rectifying device are touch switches, and are electrically controlled and connected by a circuit with an electric control box of the hot air tentering setting machine. The pair of net curtain rectifying roller adjusting devices 57 are air cylinders, are horizontally fixed on the fixed seat in the horizontal direction, and are connected with an air compressor through pipelines. When one side of the net curtain is deviated and touches the edge-detecting sensor 57, the electric control box sends a signal to the air cylinder on the side, and the air cylinder column pops up to push the bearing seat platform 551 provided with the deviation correcting rollers 53 and 54 to move along the bearing seat guide sliding groove 552, so that the deviated net curtain returns to the correct position.
Claims (6)
1. The utility model provides a hot-blast tentering setting machine oven with liftable pierce through heating device that induced drafts which characterized in that: the device comprises an oven body, an upper hot air box, a lower hot air box, an air suction platform lifting device, a hot air generating chamber and an air return chamber; a heating cavity is formed between the upper hot air box and the air suction lifting device; the two ends of the upper hot air box are transversely fixed with the wall of the oven body, a burner is arranged on one side of the hot air generating chamber, hot air heated by the burner upwards enters the hot air guiding device through an air duct and is ejected out of an air outlet to enter a heating cavity formed between the upper hot air box and the lower hot air box;
the lower hot air box comprises an air suction platform, an air suction plate is arranged on the surface of the air suction platform, the lower part of the air suction plate is connected with the hot air box, and hot air sprayed out of the upper hot air box passes through the fiber web in the middle of the heating cavity and is sucked into the hot air box;
the air suction platform lifting device comprises a lifting platform, the upper part of the lifting platform is connected with a hot air box, lifting adjusting devices are arranged at two ends of the lifting platform along the length direction of the oven, the lifting adjusting devices are fixed on a partition plate in the oven, a cavity is arranged in the lifting platform, the upper end of the cavity is connected with the hot air box, the lower end of the cavity is connected with a sealing device which can stretch up and down through a lower air box, and the lower part of the sealing device is connected with an air return chamber; a centrifugal fan is arranged on one side of the air return chamber, and return air entering the air return chamber is sent into the opposite hot air generating chamber for heating through an air duct by a fan impeller of the centrifugal fan; a net curtain made of Teflon material which moves circularly is arranged between the air suction platform and the non-woven fiber felt.
2. The oven of the hot air tentering and setting machine with the liftable penetration heating and air suction device according to claim 1, is characterized in that: the chain needle plate type clamping device comprises a pair of platforms arranged at the upper part of a machine base, nuts are arranged below the platforms, a lead screw is matched with the nuts at two ends, and the middle position of the lead screw is arranged on a shaft seat; one end of each of the tenter pin plate rails on the left side and the right side is fixed on the platform, and the lower part of the other end of each of the tenter pin plate rails is provided with a roller which is arranged on the supporting platform; a chain type needle plate is arranged above the stenter needle plate track, and the chain type needle plate forms a closed loop around a needle plate wheel; the screw rod is fixed with the driven wheel, and the driven wheel is connected with the driving wheel through a chain; the tentering pin plate rail penetrates through the heating oven, and pin plates at two ends move circularly along the guide rails.
3. The oven of the hot air tentering and setting machine with the liftable penetration heating and air suction device according to claim 1, is characterized in that: the net curtain driving mechanism comprises a machine base and a driving motor, wherein the driving motor is connected with a driving wheel through a speed reducer, and a variable speed wheel coaxial with the driving wheel is connected with a driving roller fixed on the machine base through a chain; the net curtain is wound on the driving roller, the net curtain guide roller and the net curtain running guide roller.
4. The oven of the hot air tentering and setting machine with the liftable penetration heating and air suction device according to claim 1, further comprising a deviation rectifying device: the device comprises a pair of deviation correction rollers arranged between a driving roller and a net curtain guide roller, wherein a sliding platform is arranged below the deviation correction rollers, and the lower part of the sliding platform is arranged in a sliding groove of a base through a sliding block; a mesh curtain deviation rectifying roller adjusting cylinder is arranged on the inner side of the base, and a piston of the mesh curtain deviation rectifying roller adjusting cylinder abuts against the sliding platform;
the inboard of base sets up the net curtain and rectifies a roll adjustment cylinder, and the left and right sides of fabric advancing direction has set up a pair of net curtain that fixes on the base and has visited the limit sensor, and the net curtain visits the limit sensor and surveys the transmission of signal for the controller, and the controller is according to the extension of the piston end of signal adjustment net curtain rectification roll adjustment cylinder.
5. The oven of the hot air tentering and setting machine with the liftable penetration heating and air suction device according to claim 1, is characterized in that: the drying oven also comprises an air exhaust mechanism arranged on the oven body, and moisture generated in the oven is exhausted through the air outlet and the air duct by the rotation of the fan and the fan impeller arranged at the top of the oven body.
6. The oven of the hot air tentering and setting machine with the liftable penetration heating and air suction device according to claim 1, is characterized in that: the sealing device comprises a flange connected with the upper hot air box and a flange fixed with the air return chamber, a plurality of connecting and fixing holes are formed in the surface of the sealing device, and the other ends of the two flanges are hermetically connected with a high-temperature-resistant, high-pressure-resistant and anti-aging flexible telescopic material to form a sealed ventilation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022378076.1U CN213804414U (en) | 2020-10-23 | 2020-10-23 | Hot-blast tentering setting machine oven with liftable pierce through heating device that induced drafts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022378076.1U CN213804414U (en) | 2020-10-23 | 2020-10-23 | Hot-blast tentering setting machine oven with liftable pierce through heating device that induced drafts |
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| CN213804414U true CN213804414U (en) | 2021-07-27 |
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| CN202022378076.1U Active CN213804414U (en) | 2020-10-23 | 2020-10-23 | Hot-blast tentering setting machine oven with liftable pierce through heating device that induced drafts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114103382A (en) * | 2021-12-28 | 2022-03-01 | 常州市福欧车辆配件有限公司 | Customization process of sound-absorbing and sound-insulating multilayer composite acoustic non-woven felt for car |
-
2020
- 2020-10-23 CN CN202022378076.1U patent/CN213804414U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114103382A (en) * | 2021-12-28 | 2022-03-01 | 常州市福欧车辆配件有限公司 | Customization process of sound-absorbing and sound-insulating multilayer composite acoustic non-woven felt for car |
| CN114103382B (en) * | 2021-12-28 | 2024-05-17 | 常州市福欧车辆配件有限公司 | Sound-absorbing and sound-insulating multi-layer composite acoustic non-woven veil customization process for sedan |
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