CN218521463U - Ultra-narrow oil-free steel plate guide rail - Google Patents

Abstract

The utility model discloses a no oilless steel sheet guide rail of special narrow, arc reducing mechanism are fixed respectively to be set up in the outside of advancing cloth section guide rail and going out cloth section guide rail, include: the connecting joint comprises an inner convex arc section close to the connecting joint, an outer convex arc section far away from the connecting joint and an inclined straight transition section which is positioned between the inner convex arc section and the outer convex arc section and is used for smoothly connecting the inner convex arc section and the outer convex arc section, wherein the inclined straight transition section inclines inwards from the direction of the outer convex arc section to the inner convex arc section; through the transition of the two arc-shaped reducing mechanisms, the rear end of the cloth feeding section guide rail is connected with the front end of the shaping section guide rail in a straight manner, and the front end of the cloth discharging section guide rail is connected with the rear end of the shaping section guide rail in a straight manner. The tentering heat setting machine adopting the ultra-narrow oilless steel plate guide rail has lower energy consumption than that of a tentering heat setting machine adopting a traditional oilless steel plate guide rail under the condition that the width L of cloth is determined.

Description

Ultra-narrow oil-free steel plate guide rail

Technical Field

The utility model relates to a tentering heat setting machine that the printing and dyeing trade used especially relates to the guide rail among this heat setting machine.

Background

The working process of the tentering heat setting machine is as follows: open width cloth feeding → thread widening → infrared centering → padder → disc weft straightening → lower overfeeding → mechanical weft straightening → thread widening → upper overfeeding → edge peeling → infrared edge probing → upper needle → pulp edge → tentering or heat setting → cold air cooling → edge trimming, edge suction → needle release → pendulum doffing or small lap. Two long annular guide rails with two end parts in an open loop state are arranged in the tentering heat setting machine side by side, the two long annular guide rails penetrate through a drying room of the tentering heat setting machine from front to back, the guide rail positioned in the front of the drying room is generally called a cloth feeding section guide rail, the guide rail positioned in the drying room is called a shaping section guide rail, and the guide rail positioned in the back of the drying room is called a cloth discharging section guide rail. As shown in figure 1, the front end of each guide rail is connected with a front end mounting seat used for mounting a driven chain wheel, the tail end of each guide rail is connected with a tail end mounting seat used for mounting a driving chain wheel, the driven chain wheel on the front end mounting seat and the driving chain wheel on the tail end mounting seat are movably connected through a chain 11, and a needle clip 12 is arranged on the chain. During operation, the two ends of the cloth are hung on the needle clips 12 on the two adjacent sides between the two guide rails respectively, the distance between the needle clips 12 on the two adjacent sides is the width L of the cloth, the driving device drives the two driving chain wheels to rotate, so that the two chains 11 respectively perform annular operation in the guide rail grooves 14 of the corresponding guide rails, and along with the operation of the chains 11, the needle clips 12 take the cloth from the front to the back through the cloth feeding section guide rail arranged in the front of the drying room, then enter the shaping section guide rail arranged in the drying room, and finally take the cloth down after entering the cloth discharging section guide rail arranged in the back of the drying room, so that the shaped cloth is obtained. The drying room is shaped by hot air, and is provided with a plurality of different temperature sections, the temperature in the highest temperature section can reach 230 ℃, the length of the drying room is longer, therefore, each guide rail used in the tentering heat-setting machine is formed by connecting a plurality of guide rail sections in sequence, and the length of each guide rail section is between 2.8 and 3 meters. Usually, one to two guide rail sections are arranged in the cloth feeding section guide rail, one guide rail section is arranged in the cloth discharging section guide rail, the number of the guide rail sections is determined according to the length of the drying room in the shaping section guide rail, 4-10 guide rail sections are generally arranged, and every two adjacent guide rail sections are connected through a connecting joint. For convenience of description, a side of each guide rail close to the corresponding oven wall is referred to as an outer side, and a side far from the corresponding oven wall is referred to as an inner side.

The guide rail in the tentering heat setting machine has two types of a cast iron guide rail and an oilless steel guide rail according to the material. Because the chain 11 needs to add lubricating oil when moving in the cast iron guide rail, get into the baking house after, lubricating oil can volatilize under high temperature for cloth yellows, influences the quality of cloth, and the chain 11 need not add lubricating oil when moving in the oilless steel sheet guide rail, can guarantee the quality of cloth.

As shown in fig. 1, each of the rail sections of the oilless steel plate rail currently used in the tenter heat setter includes: two "C" shape channel-section steels 51 that are located the guide rail festival inside and outside both sides respectively, the interval is provided with a plurality of transverse connection boards 52 between two channel-section steels 51, and the inside and outside both ends of every transverse connection board 52 respectively with two channel-section steels 51 welding, transverse interval d between two channel-section steels 51 has decided the width of guide rail festival. Therefore, when designing a drying room, the influence factors of the drying room width include: the transverse distance d and the width L of the cloth need to be reduced as much as possible in order to reduce energy consumption, and the transverse distance d needs to be as small as possible under the condition of ensuring the strength of the guide rail sections under the condition that the width L of the cloth is determined. In actual manufacturing, two channel steels 51 in the oilless steel plate guide rail are made of straight steel plates through direct flanging, so that the oilless steel plate guide rail adopts a front-back straight structure, and a cylinder for tensioning a chain 11 at a chain needs to be arranged in a distance d between the front ends of the cloth feeding section guide rails, so that the transverse distance d between the two channel steels 51 in each guide rail section is larger and is usually 202mm; and cast iron guide rail integrated casting shaping when the preparation, can carry out streamlined reducing in advancing cloth section guide rail and going out cloth section guide rail during the casting to can reduce the transverse spacing d in each guide rail festival in the shaping section guide rail in the baking house greatly under the prerequisite of the guide rail festival intensity of guaranteeing cast iron guide rail, make the transverse spacing d in each guide rail festival in the baking house be 60mm, and then realize the purpose that reduces the energy consumption. Therefore, under the condition that the width L of the cloth is determined, the width of a drying room of the stentering heat setting machine adopting the oilless steel plate guide rail is 284 mm wider than that of the tentering heat setting machine adopting the cast iron guide rail, so that the energy consumption of the tentering heat setting machine adopting the oilless steel plate guide rail is larger than that of the tentering heat setting machine adopting the cast iron guide rail. Therefore, need develop a special narrow oilless steel sheet guide rail, transverse distance d between the channel-section steel of the inside and outside both sides of the guide rail festival in this kind of special narrow oilless steel sheet guide rail's the design section guide rail in the channel-section of the inside and outside both sides of guide rail festival is little than transverse distance d between the channel-section steel of the inside and outside both sides of guide rail festival in the design section guide rail of traditional oilless steel sheet guide rail, can remain the advantage that cloth can not yellow when making design for the tentering heat setting machine who adopts this kind of special narrow oilless steel sheet guide rail, under the circumstances that the breadth L of cloth confirms, the energy consumption is less than the tentering heat setting machine who adopts traditional oilless steel sheet guide rail again.

Because the transverse distance d between two channel-section steels 51 in each guide rail section of traditional oilless steel plate guide rail is 202mm, be arranged in traditional oilless steel plate guide rail's attach fitting to include: the upper joint is embedded between the channel steel 51 on the inner side and the outer side of the tail end of the previous guide rail section, and the lower joint is embedded between the channel steel 51 on the inner side and the outer side of the front end of the next guide rail section. Because the transverse distance d between the channel-section steel 51 of the inside and outside both sides of the guide rail festival in the design section guide rail of the inside and outside both sides of guide rail festival among the design section guide rail of special narrow oilless steel sheet guide rail is little than the channel-section steel 51 of the inside and outside both sides of guide rail festival, can be 60mm, a joint for in the special narrow oilless steel sheet guide rail need can also conveniently finely tune the breadth L of cloth under the prerequisite of guaranteeing guide rail festival junction intensity, and connection structure between above-mentioned traditional guide rail festival is difficult to be applicable to special narrow oilless steel sheet guide rail well.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a no oily steel sheet guide rail of special narrow adopts this kind of no oily steel sheet guide rail's tentering heat setting machine of special narrow to remain cloth advantage that can not turn yellow when finalizing the design to under the definite condition of the breadth L of cloth, the energy consumption is less than adopting traditional no oily steel sheet guide rail's tentering heat setting machine. The utility model discloses further purpose can also conveniently finely tune the breadth of cloth high-efficiently under the prerequisite of ensureing adjacent guide rail festival joint strength.

In order to achieve the above object, the utility model adopts the following technical scheme: an ultra-narrow oilless steel plate guide rail sequentially comprises from front to back: a cloth feeding section guide rail, a shaping section guide rail and a cloth discharging section guide rail; the front end of the cloth feeding section guide rail can be connected with a front end mounting seat for mounting a driven chain wheel; the rear end of the cloth outlet section guide rail can be connected with a tail end mounting seat for mounting a driving chain wheel; every two adjacent guide rail sections in the guide rail are connected through a connecting joint; the method is characterized in that: the transverse distance between the channel steels on the inner side and the outer side of the front end of the cloth feeding section guide rail is the same as that between the channel steels on the inner side and the outer side of the rear end of the cloth discharging section guide rail, and is larger than that between the channel steels on the inner side and the outer side of the guide rail section in the shaping section guide rail, and each guide rail section in the shaping section guide rail is of a front-back straight structure; an air cylinder for tensioning a chain can be arranged between the channel steel on the inner side and the outer side of the front end of the cloth feeding section guide rail, an arc-shaped reducing mechanism is arranged in one guide rail section of the cloth feeding section guide rail positioned on the rear side of the air cylinder and in front of the drying room, an arc-shaped reducing mechanism is also arranged in the cloth discharging section guide rail, and through the transition of the two arc-shaped reducing mechanisms, the rear end of the cloth feeding section guide rail is straightly connected with the front end of the shaping section guide rail, and the front end of the cloth discharging section guide rail is straightly connected with the rear end of the shaping section guide rail; arc reducing mechanism is fixed the outside that sets up respectively at entering cloth section guide rail and play cloth section guide rail, includes: the connecting joint comprises an inner convex arc section close to the connecting joint, an outer convex arc section far away from the connecting joint and an inclined straight transition section which is positioned between the inner convex arc section and the outer convex arc section and is used for smoothly connecting the inner convex arc section and the outer convex arc section, wherein the inclined straight transition section inclines inwards from the direction of the outer convex arc section to the inner convex arc section.

Further, the aforementioned ultra-narrow oilless steel plate guide rail, wherein: the front and back length range of the arc diameter-changing mechanism is 900-1000 mm, the radian ranges of the outer convex arc section and the inner convex arc section are 12-13 degrees, and the front and back length of the oblique straight transition section accounts for 34-39% of the front and back length of the arc diameter-changing mechanism.

Further, the aforementioned ultra-narrow oilless steel plate rail, wherein: the front and back lengths of the outer convex arc section and the inner convex arc section are the same, and the radians and the radiuses of the arcs of the outer convex arc section and the inner convex arc section are the same.

Further, the aforementioned ultra-narrow oilless steel plate guide rail, wherein: the arc-shaped reducing mechanism and the inner side channel steel on the front side and the rear side of the arc-shaped reducing mechanism are welded and fixed through tailor welding; transverse connecting plates are respectively fixedly arranged between the outer convex arc section, the oblique straight transition section, the inner convex arc section and the opposite outer side channel steel.

Further, the aforementioned ultra-narrow oilless steel plate guide rail, wherein: the outer convex arc section, the inclined straight transition section and the inner convex arc section are welded and fixed through tailor welding to form an arc-shaped reducing mechanism; the outer convex arc section is rotated to form an inner convex arc section.

Further, the aforementioned ultra-narrow oilless steel plate rail, wherein: in every two adjacent guide rail sections, a vertically-placed joint plate is fixedly arranged between the inside and outside channel steel at the tail end of the front guide rail section, a vertically-placed joint plate is also fixedly arranged between the inside and outside channel steel at the front end of the rear guide rail section, and the connecting joint is connected with two connecting plates in the two adjacent guide rail sections; the connection joint includes: the dovetail groove sliding plate comprises two L-shaped mounting seats which are symmetrical front and back at intervals, the inner width and the outer width of a vertical connecting part of each mounting seat are smaller than the transverse distance between the channel steel on the inner side and the outer side of the guide rail section, the vertical connecting part can extend into the transverse distance between the channel steel on the inner side and the outer side of the guide rail section and can be fixedly connected with a corresponding joint plate, the bottom of a horizontal movable part of each mounting seat is provided with an arc-shaped boss, the two arc-shaped bosses both extend into a circular groove at the top of the dovetail groove sliding plate below the two mounting seats, so that the two horizontal movable parts are mutually matched and mounted at the back of the top of the dovetail groove sliding plate, the centers of the two horizontal movable parts can be provided with bolt through holes for connecting bolts to pass through, an adjusting gap which enables the two horizontal movable parts to relatively rotate is arranged between the two horizontal movable parts, the center of the dovetail groove sliding plate is provided with a step through hole, the hole is smaller than the hole at the upper part and the lower part, the step through hole is opposite to the bolt through hole, and the dovetail groove sliding plate can be movably connected with the horse seat; after the two mounting seats are connected with the dovetail groove sliding plate by the connecting bolt and the pressing plate, a rotating gap is formed between the pressing plate of the connecting bolt and the top end surfaces of the two horizontal mounting parts, so that the mounting seats can rotate along the annular groove after being stressed, and the corresponding connecting ends of the two guide rail sections connected by the connecting joint can shift outwards or inwards, thereby finely adjusting the width of the cloth; the shape of the adjustment gap meets the following requirements: the inner section of the adjusting gap and the outer section of the adjusting gap formed by the distance between the two horizontal movable parts are symmetrically arranged and gradually reduced from the inner side to the middle from the outer side until the inner side and the outer side are communicated with the bolt through hole respectively, so that the bolt through hole becomes a part of the adjusting gap.

Further, the aforementioned ultra-narrow oilless steel plate guide rail, wherein: the distance range of the narrowest part of the adjusting gap is 2-3mm, and the angle ranges of the two side walls of the inner section of the adjusting gap and the two side walls of the outer section of the adjusting gap are 11-13 degrees.

Further, the aforementioned ultra-narrow oilless steel plate guide rail, wherein: the radian of the circular arc-shaped boss is larger than 90 degrees, and the two ends of the circular arc-shaped boss extend to the side wall of the horizontal movable part until the two end walls of the circular arc-shaped boss are flush with the side walls of the corresponding horizontal movable parts.

Further, the aforementioned ultra-narrow oilless steel plate rail, wherein: the dovetail slide plate is characterized in that a dovetail boss with a trapezoidal cross section is arranged at the bottom of the dovetail slide plate, the length of the dovetail boss is consistent with that of the dovetail slide plate, and a dovetail groove capable of being matched with the dovetail boss in a sliding manner is downwards formed in the top of the horse seat, so that the dovetail slide plate is connected with the horse seat in a sliding manner.

Further, the aforementioned ultra-narrow oilless steel plate rail, wherein: the horse seat is movably supported on a crossbeam of the setting machine through rollers arranged at intervals inside and outside, a split nut is arranged on one side of the horse seat, the split nut is sleeved on a transmission screw rod, and a driving device for driving the transmission screw rod to rotate is further arranged; when the breadth of cloth need finely tune, the transmission lead screw rotates, it removes to drive split nut, thereby drive the horse seat of being connected with split nut lateral shifting on the forming machine crossbeam, the attach fitting removes along with the horse seat, the circular arc boss of two mount pads among the attach fitting moves along ring groove, drive the terminal of the preceding guide rail festival of being connected rather than and the front end of the guide rail festival of back to inside or outside skew, the maximum distance supports each other for the horizontal movable part up to two mount pads and leans on, thereby finely tune the breadth of cloth.

The utility model has the advantages that: 1. arc reducing mechanism who sets up in advance cloth section guide rail outside, play cloth section guide rail outside fixed respectively includes: evagination circular arc section, interior protruding circular arc section, and be located the straight changeover portion of slant between protruding circular arc section and the evagination circular arc section, and the straight changeover portion of slant from the direction leanin of the inside protruding circular arc section of protruding circular arc section, through the arc reducing that is located both ends and lie in the straight reducing of slant in the middle of being located, can accomplish great horizontal reducing distance in a section guide rail festival, and chain drive can smoothly go on, less noise has, the tentering heat type function that sets up the very narrow oilless steel sheet guide that has arc reducing mechanism like this keeps the advantage that cloth can not yellow, and under the definite condition of breadth L of cloth, the width of setting up the baking house of the tentering heat setting machine of the very narrow oilless steel sheet guide is less, the energy consumption is less than the tentering heat setting machine that adopts traditional steel sheet guide. 2. The utility model discloses further advantage is: the length range of the arc-shaped reducing mechanism is set to be 900-1000 mm, so that the installation space of a cylinder for winding tensioning the chain and the telescopic space of the telescopic rod can be ensured, the chain can not be influenced, the radian ranges of the inner convex arc section and the outer convex arc section are set to be 12-13 degrees, the front and rear lengths of the oblique straight transition section account for 34% -39% of the front and rear lengths of the arc-shaped reducing mechanism, the chain transmission can be further smoothly carried out, and the noise is very small during the chain operation. 3. The utility model discloses further advantage is: the attach fitting of setting on the horse seat includes: two front and back symmetrical 'L' shape mount pads, the convex boss that the mount pad bottom set up can stretch into the annular groove that dovetail slide top set up, two mount pads and dovetail slide pass through bolted connection, can rotate along the annular groove after the mount pad atress for the corresponding link of two guide rail festival that the mount pad is connected can outside or inboard skew, thereby can conveniently finely tune the breadth L of cloth high-efficiently under the prerequisite of ensureing joint strength.

Drawings

Fig. 1 is a schematic cross-sectional structure of two conventional oilless steel plate rails provided in a tenter heat setter;

fig. 2 is a schematic top view of the ultra-narrow oilless steel plate rail of the present invention;

FIG. 3 is a schematic bottom view of the structure of FIG. 2;

FIG. 4 is a schematic top view of the cloth feeding section guide rail and the front end mounting seat;

FIG. 5 is a schematic top view of the cloth discharge section guide rail and the end mounting base;

FIG. 6 is a schematic top view of a guide track section of the profile rail;

FIG. 7 is a schematic diagram of the arc diameter-changing mechanism in FIG. 4;

FIG. 8 is a schematic structural diagram of an arc-shaped diameter-changing mechanism welded by tailor welding;

FIG. 9 is an enlarged schematic view of portion B of FIG. 3;

FIG. 10 is a schematic structural view of two "L" shaped mounts;

FIG. 11 is a schematic top view of the structure of FIG. 10;

FIG. 12 is a schematic top view of a dovetail slide;

FIG. 13 isbase:Sub>A schematic sectional view A-A of FIG. 12;

FIG. 14 is a schematic view of the horse block of FIG. 9 supported on the beam of the setting machine and having split nuts mounted thereon;

FIG. 15 is a schematic view of the structure of two opposing horse blocks disposed on the beam of the setting machine;

fig. 16 is an enlarged structural view of a portion C in fig. 15.

Detailed Description

The invention will be described in further detail with reference to the drawings and preferred embodiments.

As shown in fig. 2, 3, 4, 5, 6 and 7, an ultra-narrow oilless steel plate guide rail sequentially comprises from front to back: a cloth feeding section guide rail 2, a shaping section guide rail 3 and a cloth discharging section guide rail 4. For convenience of description, the front-rear direction is referred to as a longitudinal direction, and the inside-outside direction is referred to as a lateral direction. In the present embodiment, a guide rail section is provided in the cloth feeding section guide rail 2, and this guide rail section is referred to as a first guide rail section 21, and the front end of the first guide rail section 21 is connected to a front end mounting base 62 for mounting the driven sprocket 61; the rear end of the tail end guide rail section 41 arranged in the cloth discharging section guide rail 4 is connected with a tail end mounting seat 64 for mounting a driving chain wheel 63; every two adjacent guide rail sections in the guide rail are connected through a connecting joint; each guide rail section in the design section guide rail 3 is a front and back straight structure, the transverse distance between the channel steel 51 on the inner side and the outer side of each guide rail section is 60mm, the transverse distance between the channel steel on the inner side and the outer side of the front end of the first guide rail section 21 is the same as the transverse distance between the channel steel on the inner side and the outer side of the rear end of the tail end guide rail section 41, the transverse distances are 202mm, and the transverse distances are larger than the transverse distances between the channel steel on the inner side and the outer side of each guide rail section of the design section guide rail 3. An air cylinder 65 for tensioning a chain can be arranged between the channel steel 51 on the inner side and the outer side of the front end of the first guide rail section 21, an arc-shaped reducing mechanism 7 is arranged in the first guide rail section 21 positioned on the rear side of the air cylinder 65, and the transverse distance between the channel steel 51 on the inner side and the outer side of the rear end of the first guide rail section 21 is the same as the transverse distance between the channel steel 51 on the inner side and the outer side of each guide rail section in the guide rail 3 of the shaping section through the transition of the arc-shaped reducing mechanism 7, so that the rear end of the first guide rail section 21 can be butted with the front end of the guide rail 3 of the shaping section; an arc-shaped reducing mechanism 7 is also arranged in the tail end guide rail section 41, and through the transition of the arc-shaped reducing mechanism 7, the transverse distance between the channel steel 51 at the inner side and the outer side of the front end of the tail end guide rail section 41 is the same as the transverse distance between the channel steel 51 at the inner side and the outer side of each guide rail section in the shaping section guide rail 3, so that the front end of the tail end guide rail section 41 can be butted with the rear end of the shaping section guide rail 3. Arc reducing mechanism 7 is fixed the outside that sets up at first guide rail festival 21 and terminal guide rail festival 41 respectively, includes: the connecting joint comprises an inner convex circular arc section 73 close to the connecting joint, an outer convex circular arc section 71 far away from the connecting joint, and an inclined straight transition section 72 which is positioned between the outer convex circular arc section 71 and the inner convex circular arc section 73 and is used for smoothly connecting the outer convex circular arc section 71 and the inner convex circular arc section 73, wherein the inclined straight transition section 72 is inwards inclined from the direction of the outer convex circular arc section 71 to the inner convex circular arc section 73.

If the transverse distance between two channel steel 51 at the rear end of the first guide rail section 21 is changed into 60mm, the transverse reducing distance of 142 mm needs to be completed, but if the chain 11 directly adopts an oblique straight reducing mode, the longitudinal length required for completing the transverse reducing distance of 142 mm on the premise that the chain transmission can be smoothly carried out is about 5 m, namely, the reducing can be completed by two guide rail sections, only one tail end guide rail section 41 is arranged in the cloth discharging section guide rail 4, the transverse reducing distance of 142 mm needs to be completed by one guide rail section in the shaping section guide rail 3 with the front side positioned in the drying room, and because the cloth is discharged from the drying room to complete the shaping, under the condition that the width L of the cloth is determined, the width of the drying room in the tentering heat setting machine adopting the oblique straight reducing is wider than that of the tentering heat setting machine adopting the arc reducing mechanism 7 to complete the reducing in one guide rail section, and the energy consumption is increased. A cylinder 65 for with tensioning of chain 11 needs to set up between the channel-section steel 51 of the inside and outside both sides of first guide rail festival 21 front end, therefore the horizontal interval between two channel-section steels 51 of first guide rail festival 21 front end still is 202mm, the total length of the installation space of cylinder 65 and the flexible space of telescopic link is about 1.5 meters, therefore, in the in-service use, even adopt the mode of slant straight reducing to set up two sections guide rail festival in advancing cloth section guide rail 2 and accomplish 142 mm horizontal reducing distance, also can influence the tensioning cochain of chain 11 owing to not leaving the installation space of cylinder 65, and the noise when slant reducing straight chain 11 chain drive is great. The lengths of the first guide rail section 21 and the end guide rail section 41 are usually 2.8 m, and considering that the connection length for connecting the connection joints needs to be reserved at the ends of the first guide rail section 21 and the front end of the end guide rail section 41, after the total length of the installation space of the air cylinder 65 and the telescopic space of the telescopic rod is removed by 1.5 m, the transverse diameter-changing distance of 142 mm needs to be completed within the longitudinal length range of 0.9-1 m. The arc diameter-changing mechanism 7 in fig. 4 and 7 includes: close to the interior convex circular arc section 73 of attach fitting, keep away from the convex circular arc section 71 of attach fitting to and be located the straight changeover portion 72 of slant between convex circular arc section 71 and the interior convex circular arc section 73 for chain 11 that the fore-and-aft direction set up when accomplishing outside-in 142 mm horizontal reducing distance, changes the diameter through the inside arc of convex circular arc section 71 earlier, and the straight changeover portion 72 of rethread slant inwards slant changes the diameter, and rethread convex circular arc section 73 is the arc that changes the diameter inwards at last. In the embodiment, the radian ranges of the outer convex arc section 71 and the inner convex arc section 73 are both 12-13 degrees, and the front and rear lengths of the inclined straight transition section 72 account for 34-39% of the front and rear lengths of the arc reducing mechanism 7, so that the transverse reducing distance of 142 mm from outside to inside can be completed within the longitudinal length range of 900-1000 mm, namely the front and rear length range, the tensioning and chain winding of the chain 11 is not hindered, the chain transmission can be smoothly carried out, and the noise is low during operation. In the embodiment, the longitudinal lengths, i.e., the front and rear lengths, of the inner convex arc section 73 and the outer convex arc section 71 are the same, and the radians and the radiuses of the arcs of the inner convex arc section 73 and the outer convex arc section 71 are the same, so that smooth operation of chain transmission is further ensured.

In practical use, if two guide rail sections are arranged in the cloth feeding section guide rail 2 according to the requirement of a shaping process, the arc-shaped reducing mechanism 7 is preferably arranged in one guide rail section at the front end, so that the same connecting joint can be adopted when all the guide rail sections of the ultra-narrow oil-free steel plate guide rail are connected, and the follow-up maintenance is facilitated.

In the embodiment, in order to enhance the strength of the guide rail at the arc reducing mechanism 7, the arc reducing mechanism 7 and the channel steel 51 at the outer sides of the front side and the rear side of the arc reducing mechanism are welded and fixed by tailor welding; and a transverse connecting plate 52 is respectively fixedly arranged between the inner convex arc section 73, the inclined straight transition section 72, the outer convex arc section 71 and the corresponding inner side channel steel 51.

When the arc reducing mechanism 7 is actually manufactured, the bottom plate and the two side plates can be respectively cut and finally welded to each other, but the bottom plate and the two side plates both comprise partial structures of the inward convex arc section 73, the oblique straight transition section 72 and the outward convex arc section 71, so that the requirements on the manufacturing process are high. As shown in fig. 8, in this embodiment, the inner convex arc section 73, the inclined straight transition section 72, and the outer convex arc section 71 are fixed by welding to form the arc diameter-changing mechanism 7. Because the front and back lengths of the inner convex arc section 73 and the outer convex arc section 71 are the same, and the radians and the radiuses of the arcs of the inner convex arc section 73 and the outer convex arc section 71 are the same, the manufactured inner convex arc section 73 is the outer convex arc section 71 after rotating, and the oblique straight transition section 72 can be directly manufactured by channel steel, compared with the former manufacturing mode, the manufacturing mode has low requirements on the manufacturing process and can reduce the consumption of materials.

Since the connector used in the ultra-narrow oilless steel plate guide rail needs to be able to conveniently and efficiently fine-tune the width L of the cloth while ensuring the strength of the joint of the guide rail sections, the connector shown in fig. 9, 10, 11, 12 and 13 is used in this embodiment. In every two adjacent guide rail joints, a vertically-placed joint plate 53 is fixedly arranged between the channel steel 51 at the inner side and the outer side of the tail end of the front guide rail joint, a vertically-placed joint plate 53 is also fixedly arranged between the channel steel 51 at the inner side and the outer side of the front end of the rear guide rail joint, and the connecting joints are connected with two connecting plates 53 in the two adjacent guide rail joints; the connection joint includes: the two L-shaped installation bases 81 are arranged symmetrically at the front and the back, the inner width and the outer width of a vertical connecting part 811 of each installation base 81 are smaller than 60mm, the vertical connecting part can extend into the transverse space between the inner channel steel 51 and the outer channel steel 51 of the guide rail joint and can be fixed with the corresponding joint plate 53 through bolts, the bottom of a horizontal movable part 812 of each installation base 81 is provided with an arc-shaped boss 813, the two arc-shaped bosses 813 both extend into an annular groove 821 at the top of a dovetail groove sliding plate 82 below the two installation bases 81, so that the two horizontal movable parts 812 are matched with each other and installed at the back of the top of the dovetail groove sliding plate 82, a bolt through hole 814 for a connecting bolt 83 to pass through is reserved in the center of the two horizontal movable parts 812, an adjusting gap 85 for the two horizontal movable parts 812 to rotate relatively is also arranged between the two horizontal movable parts 812, a step through hole 822 is arranged in the center of the dovetail groove sliding plate 82, the hole at the upper part of the step through hole 822 is smaller than the hole at the lower part, the step through hole 822 is opposite to the bolt through hole 814, and the dovetail groove sliding plate 82 can be movably connected with the horse base 84; after the two mounting bases 81 are connected with the dovetail groove sliding plate 82 by the connecting bolts 83 and the pressing plates, a rotating gap is formed between the pressing plates of the connecting bolts 83 and the top end surfaces of the two horizontal mounting portions 812, so that the mounting bases 81 can rotate along the annular groove 821 after being stressed, and corresponding connecting ends of the two guide rail sections connected by the connecting joints can move outwards or inwards, and the breadth L of the cloth can be finely adjusted; the shape of the adjustment gap 85 meets the following requirements: the inner and outer sides of the bolt through hole 814 are respectively provided with an adjusting gap inner section 852 and an adjusting gap outer section 851, and the adjusting gap inner section 852 and the adjusting gap outer section 851 are respectively gradually reduced from the inner side to the outer side toward the middle until respectively communicating with the bolt through hole 814, so that the bolt through hole 814 becomes a part of the adjusting gap 85.

In the present embodiment, the regulation gap inner section 852 and the regulation gap outer section 851 are formed by a space between the two horizontal movable portions 812. When two adjacent guide rail sections are in a front-back straight connection state, the adjusting gap inner section 852 and the adjusting gap outer section 851 are in a symmetrically arranged wedge shape, the range of the distance between the narrowest part of the adjusting gap 85 is 2-3mm, and the range of the angle alpha between two side walls of the wedge-shaped adjusting gap inner section 852 and the range of the angle alpha between two side walls of the wedge-shaped adjusting gap outer section 851 are both 11-13 degrees, so that the breadth L of the cloth can be finely adjusted. The radian of the circular arc-shaped boss 813 is greater than 90 degrees, and the two ends of the circular arc-shaped boss 813 extend towards the side wall of the horizontal movable part 812 until the two end walls of the circular arc-shaped boss 813 are flush with the corresponding side walls of the horizontal movable part 812, so that the circular arc-shaped boss 813 can more stably support the mounting seat 81.

In this embodiment, a dovetail boss 823 with a trapezoidal cross section is arranged at the bottom of the dovetail groove sliding plate 82 in a forward-backward direction, the length of the dovetail boss 823 is the same as the forward-backward length of the dovetail groove sliding plate 82, a dovetail groove 841 with a trapezoidal cross section and capable of being slidably connected with the dovetail boss is downwardly arranged at the top of the horse seat 84, and the front end and the rear end of the dovetail groove 841 respectively penetrate through the front side wall and the rear side wall of the horse seat 84, so that the dovetail groove sliding plate 82 is slidably connected with the horse seat 84, the transverse degree of freedom of the horse seat 84 is limited, and the longitudinal degree of freedom of the horse seat 84 is not limited. Thus, when the guide rail sections in the drying room expand and contract with heat and contract with cold under the influence of temperature change, the dovetail sliding plate 82 and the horse block 84 which are connected in a sliding mode provide the adjacent guide rail sections with the moving space for expanding with heat and contracting with cold.

As shown in fig. 14 and 15, the tenter heat setting machine is provided with a plurality of i-shaped setting machine beams 9 parallel to each other, and the horse seats 84 are movably supported on the setting machine beams 9 by rollers 846 arranged at inner and outer intervals, so that the weight of the guide rails is born by the setting machine beams 9. A split nut 843 is installed on one side of the horse seat 84, the split nut 843 is fixedly sleeved on the transmission screw rod 845, two side walls of the horse seat 84 are respectively provided with an anti-toppling wheel 842, and the anti-toppling wheel 842 is positioned below the top wall of the cross beam 9 of the I-shaped setting machine. A driving device for driving the transmission screw 845 to rotate is also arranged. In actual installation work, transmission screw 845 can be arranged on the setting machine beam 9 through the installation bracket, and the transmission screw 845 can be driven to rotate by a hand wheel or a motor. When the breadth L of the cloth needs to be finely adjusted, the transmission screw rods 845 rotate to drive the split nuts 843 to move, so that the horse seats 84 connected with the split nuts are driven to transversely move on the cross beam 9 of the forming machine, the connecting joints move along with the horse seats 84, the circular arc bosses 813 of the two mounting seats in the connecting joints move along the circular ring-shaped grooves 821 to drive the tail end of the front guide rail joint connected with the connecting joints and the front end of the rear guide rail joint to offset inwards or outwards, the maximum moving distance is until the horizontal moving parts 812 of the two mounting seats abut against each other, and the breadth L of the cloth is finely adjusted.

The utility model has the advantages that: 1. the reducing mechanism 7 fixed on the outer sides of the first guide rail section 21 and the end guide rail section 41 comprises: interior convex arc section 73, outer convex arc section 71, and be located the straight changeover portion 72 of slant between interior convex arc section and the outer convex arc section, and the straight changeover portion 72 of slant inwards inclines from the direction of the inward convex arc section 73 of outer convex arc section 71, through the arc reducing that is located both ends and the straight reducing of slant that is located in the middle of being located, can accomplish great horizontal reducing distance in a section of guide rail festival, and chain drive can smoothly go on, less noise has, the advantage that cloth can not yellow is remain to the tentering heat type function that sets up the special narrow oilless steel sheet guide that has arc reducing mechanism 7, and under the definite condition of breadth L of cloth, the width of setting up the baking house of the tentering heat setting machine of special narrow oilless steel sheet guide is less, the energy consumption is less than the tentering heat setting machine that adopts traditional oilless steel sheet guide. 2. The utility model discloses further advantage is: the length range of the arc-shaped reducing mechanism is set to be 900-1000 mm, so that the installation space of the cylinder 65 for chain tensioning of the chain 11 and the telescopic space of the telescopic rod can be guaranteed, the chain 11 can not be hindered from tensioning and chain winding, the radian ranges of the outward convex arc section 71 and the inward convex arc section 73 are set to be 12-13 degrees, the front length and the rear length of the oblique straight transition section 72 account for 34% -39% of the front length and the rear length of the arc-shaped reducing mechanism 7, chain transmission can be further smoothly carried out, and noise is very small when the chain 11 runs. 3. The utility model discloses further advantage is: the connection joint provided on the horse seat 84 includes: two "L" shape mount pads 81 of symmetry around, the circular arc boss 813 that the mount pad 81 bottom set up can stretch into the annular groove 821 that dovetail slide 82 top set up, two mount pads 81 and dovetail slide 82 pass through the bolt 83 connection, can rotate along annular groove 821 after the mount pad 81 atress for the corresponding link of two guide rail festival that the mount pad 81 connects can outside or inboard skew, thereby can conveniently finely tune the breadth L of cloth high-efficiently under the prerequisite of ensureing joint strength.

Claims (10)

1. An ultra-narrow oilless steel plate guide rail sequentially comprises from front to back: a cloth feeding section guide rail, a shaping section guide rail and a cloth discharging section guide rail; the front end of the cloth feeding section guide rail can be connected with a front end mounting seat for mounting a driven chain wheel; the rear end of the cloth outlet section guide rail can be connected with a tail end mounting seat for mounting a driving chain wheel; every two adjacent guide rail sections in the guide rail are connected through a connecting joint; the method is characterized in that: the transverse distance between the channel steels on the inner side and the outer side of the front end of the cloth feeding section guide rail is the same as that between the channel steels on the inner side and the outer side of the rear end of the cloth discharging section guide rail, and is larger than that between the channel steels on the inner side and the outer side of the guide rail section in the shaping section guide rail, and each guide rail section in the shaping section guide rail is of a front-back straight structure; an air cylinder for tensioning a chain can be arranged between the channel steel on the inner side and the outer side of the front end of the cloth feeding section guide rail, an arc-shaped reducing mechanism is arranged in one guide rail section of the cloth feeding section guide rail positioned on the rear side of the air cylinder and in front of the drying room, an arc-shaped reducing mechanism is also arranged in the cloth discharging section guide rail, and through the transition of the two arc-shaped reducing mechanisms, the rear end of the cloth feeding section guide rail is straightly connected with the front end of the shaping section guide rail, and the front end of the cloth discharging section guide rail is straightly connected with the rear end of the shaping section guide rail; arc reducing mechanism is fixed the outside that sets up respectively at entering cloth section guide rail and play cloth section guide rail, includes: the connecting joint comprises an inner convex arc section close to the connecting joint, an outer convex arc section far away from the connecting joint and an inclined straight transition section which is positioned between the inner convex arc section and the outer convex arc section and is used for smoothly connecting the inner convex arc section and the outer convex arc section, wherein the inclined straight transition section inclines inwards from the direction of the outer convex arc section to the inner convex arc section.

2. An ultra-narrow oilless steel plate guide rail according to claim 1, characterized in that: the front and back length range of the arc diameter-changing mechanism is 900-1000 mm, the radian ranges of the outer convex arc section and the inner convex arc section are 12-13 degrees, and the front and back length of the oblique straight transition section accounts for 34-39% of the front and back length of the arc diameter-changing mechanism.

3. An ultra-narrow oilless steel plate guide rail according to claim 2, characterized in that: the front and back lengths of the outer convex arc section and the inner convex arc section are the same, and the radians and the radiuses of the arcs of the outer convex arc section and the inner convex arc section are the same.

4. The ultra-narrow oilless steel plate guide rail of claim 2, wherein: the arc-shaped reducing mechanism and the inner side channel steel on the front side and the rear side of the arc-shaped reducing mechanism are welded and fixed through tailor welding; transverse connecting plates are respectively fixedly arranged between the outer convex arc section, the oblique straight transition section, the inner convex arc section and the opposite outer side channel steel.

5. The ultra-narrow oilless steel plate guide rail of claim 3, wherein: the outer convex arc section, the inclined straight transition section and the inner convex arc section are welded and fixed through tailor welding to form an arc-shaped reducing mechanism; the outer convex arc section is rotated to form an inner convex arc section.

6. An ultra-narrow oilless steel rail according to claim 1 or 2 or 3 or 4 or 5, wherein: in every two adjacent guide rail joints, a vertically-placed joint plate is fixedly arranged between the channel steels on the inner side and the outer side of the tail end of the front guide rail joint, a vertically-placed joint plate is also fixedly arranged between the channel steels on the inner side and the outer side of the front end of the rear guide rail joint, and the connecting joint is connected with two connecting plates in the two adjacent guide rail joints; the connection joint includes: the dovetail groove sliding plate comprises two L-shaped mounting seats which are symmetrical front and back at intervals, the inner width and the outer width of a vertical connecting part of each mounting seat are smaller than the transverse distance between the channel steel on the inner side and the outer side of the guide rail section, the vertical connecting part can extend into the transverse distance between the channel steel on the inner side and the outer side of the guide rail section and can be fixedly connected with a corresponding joint plate, the bottom of a horizontal movable part of each mounting seat is provided with an arc-shaped boss, the two arc-shaped bosses both extend into a circular groove at the top of the dovetail groove sliding plate below the two mounting seats, so that the two horizontal movable parts are mutually matched and mounted at the back of the top of the dovetail groove sliding plate, the centers of the two horizontal movable parts can be provided with bolt through holes for connecting bolts to pass through, an adjusting gap which enables the two horizontal movable parts to relatively rotate is arranged between the two horizontal movable parts, the center of the dovetail groove sliding plate is provided with a step through hole, the hole is smaller than the hole at the upper part and the lower part, the step through hole is opposite to the bolt through hole, and the dovetail groove sliding plate can be movably connected with the horse seat; after the two mounting seats are connected with the dovetail groove sliding plate by the connecting bolt and the pressing plate, a rotating gap is formed between the pressing plate of the connecting bolt and the top end surfaces of the two horizontal mounting parts, so that the mounting seats can rotate along the annular groove after being stressed, and the corresponding connecting ends of the two guide rail sections connected by the connecting joint can shift outwards or inwards, thereby finely adjusting the width of the cloth; the shape of the adjustment gap meets the following requirements: the inner side and the outer side of the bolt through hole are respectively provided with an adjusting gap inner section and an adjusting gap outer section, and the adjusting gap inner section and the adjusting gap outer section are respectively gradually reduced from the inner side to the middle from the outer side until the adjusting gap inner section and the adjusting gap outer section are respectively communicated with the bolt through hole, so that the bolt through hole becomes a part of the adjusting gap.

7. An ultra-narrow oilless steel plate guide rail according to claim 6, characterized in that: when two adjacent guide rail sections are in a front-back straight connection state, the inner side section of the adjusting gap and the outer side section of the adjusting gap are in a symmetrically arranged wedge shape; the distance range of the narrowest part of the adjusting gap is 2-3mm, and the angle ranges between the two side walls of the inner section of the adjusting gap and between the two side walls of the outer section of the adjusting gap are 11-13 degrees.

8. An ultra-narrow oilless steel plate guide rail according to claim 7, characterized in that: the radian of the circular arc-shaped boss is larger than 90 degrees, and the two ends of the circular arc-shaped boss extend to the side wall of the horizontal movable part until the two end walls of the circular arc-shaped boss are flush with the side walls of the corresponding horizontal movable parts.

9. The ultra-narrow oilless steel plate guide rail of claim 6, wherein: the dovetail slide board is characterized in that dovetail bosses with trapezoidal sections are arranged at the bottom of the dovetail slide board, the length of each dovetail boss is consistent with that of the dovetail slide board, and a dovetail groove capable of being matched with the dovetail bosses in a sliding connection mode is downwards formed in the top of the horse seat, so that the dovetail slide board is in sliding connection with the horse seat.

10. An ultra-narrow oilless steel plate guide rail according to claim 9, characterized in that: the horse seat is movably supported on a crossbeam of the setting machine through rollers arranged at intervals inside and outside, split nuts are arranged on one side of the horse seat, the split nuts are sleeved on the transmission screw rods, and a driving device for driving the transmission screw rods to rotate is further arranged; when the breadth of cloth needs to be finely adjusted, the transmission lead screw rotates to drive the split nuts to move, so that the horse seats connected with the split nuts are driven to move transversely on the cross beam of the setting machine, the connecting joint moves along with the horse seats, the circular arc bosses of the two mounting seats in the connecting joint move along the circular ring-shaped grooves, the tail ends of the front guide rail sections connected with the connecting joint and the front ends of the rear guide rail sections are driven to deviate inwards or outwards, the maximum distance is up to the horizontal movable parts of the two mounting seats to abut against each other, and the breadth of the cloth is finely adjusted.

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