A double-end tenter

Abstract

The utility model discloses a double -end stenter setting -up machine, including cloth area equipment, cloth area equipment, heat setting room, cloth conveying system, cloth area equipment includes first cloth area equipment, second cloth area equipment, and cloth area equipment includes first cloth area equipment, second cloth area equipment, and cloth conveying system includes first cloth conveying system and second cloth conveying system, and cloth conveying system includes two sets of side -by -side setting and synchronous motion's chain conveying mechanism and drive chain conveying mechanism motion's power device, and chain conveying mechanism includes conveying chain, a plurality of sprocket, track of supporting chain, be equipped with the fixing mechanism for fixing cloth on conveying chain. The double -end stenter setting -up machine of one kind disclosed in the application realizes the processing efficiency of stenter setting -up machine doubling, and while ensuring the processing efficiency doubling, has reduced the cost of processing cloth, has reduced the total area of the heat dissipation surface of stenter setting -up machine, has reduced the waste of heat, has improved the thermal efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tenter frame machines, and in particular to a double-head tenter frame machine. Background Technology

[0002] Tentator machines are used to stretch and heat-set fabrics. Their basic working principle is that the fabric is clamped on a chain conveyor and then conveyed into an oven (heat setting chamber). The oven is equipped with a heating system to heat the fabric. After the fabric is heated and set in the oven, it is conveyed out of the oven by the chain conveyor.

[0003] Chinese utility patent CN219908143U discloses a tenter frame stretching machine. It uses a fabric feeding area, a heat-setting chamber, a fabric conveying system, and a fabric output area to stretch the fabric. However, a single tenter frame can only stretch one bolt of fabric at a time, resulting in low efficiency. Its drying oven has six sides: top, bottom, left, right, front, and back. The heat dissipation surface of the tenter frame corresponds to these six sides.

[0004] If multiple bolts of fabric need to be stretched simultaneously, the number of tenter frame machines required must correspond to the number of bolts of fabric being processed at the same time. For example, if two bolts of fabric need to be stretched simultaneously, two tenter frame machines are required. Increasing the number of machines to improve work efficiency will double the processing cost. The heat dissipation surface also doubles with the increase in the number of machines, resulting in significant heat waste. Summary of the Invention

[0005] In this utility model, the first fabric feeding area end of the tenter frame is considered the front, and the opposite end is considered the rear.

[0006] The purpose of this invention is to construct a double-head tenter frame based on the existing tenter frame machine, and based on the needs of improving the working efficiency of the tenter frame machine, saving the processing cost of the fabric, and improving the thermal efficiency, by using a technical solution of simultaneously heating and shaping two pieces of fabric in one heat setting chamber.

[0007] A double-head tenter frame includes a fabric infeed area, a fabric outlet area, a heat setting chamber for heating and setting the fabric, and a fabric conveying system for conveying the fabric from the infeed area into the heat setting chamber and then from the heat setting chamber to the outlet area. The fabric infeed area includes a first infeed area and a second infeed area. The fabric outlet area includes a first outlet area and a second outlet area. The fabric conveying system includes a first fabric conveying system for conveying the fabric from the first infeed area into the heat setting chamber and then from the heat setting chamber to the first outlet area, and a second fabric conveying system for conveying the fabric from the second infeed area into the heat setting chamber and then from the heat setting chamber to the second outlet area. The fabric conveying system includes two sets of chain conveying mechanisms arranged side by side and moving synchronously, as well as a power device for driving the chain conveying mechanisms. The chain conveying mechanism includes a conveying chain, several sprockets, and a track supporting the chain. The conveying chain is equipped with a fixing mechanism for fixing the fabric.

[0008] Compared to existing tenter frame machines that increase fabric processing efficiency by adding more equipment, this invention sets up a first fabric inlet area, a second fabric inlet area, a first fabric outlet area, a second fabric outlet area, a first fabric conveying system, a second fabric conveying system, and a heat setting chamber in one tenter frame machine. This allows one tenter frame machine to process two fabrics simultaneously, doubling the processing efficiency of the tenter frame machine.

[0009] Compared to the existing two separate tenter frames with 12 heat dissipation surfaces, the tenter frame of this invention has a total heat dissipation surface area reduced by two heat dissipation surfaces, thus reducing heat waste and improving thermal efficiency.

[0010] Compared to existing stenter machines with two separate units, each stenter machine has a fabric inlet area, a heat setting chamber, a fabric conveying system, and a fabric outlet area. The stenter machine of this invention has a first fabric inlet area, a second fabric inlet area, a first fabric outlet area, a second fabric outlet area, a first fabric conveying system, a second fabric conveying system, and a heat setting chamber. This improves the working efficiency of the stenter machine while reducing the cost of processing fabric.

[0011] Optionally, the first fabric infeeding area equipment, the first fabric conveying system, the first fabric outfeeding area equipment, and the second fabric infeeding area equipment, the second fabric conveying system, and the second fabric outfeeding area equipment are arranged side by side along the width direction of the tenter frame.

[0012] Furthermore, the heat-setting chamber has a modular structure, consisting of several heating and setting units connected front to back. The first fabric conveying system includes a first chain conveying mechanism, which comprises a closed first conveying chain, a first driving sprocket, and a first driven sprocket. The first conveying chain wraps around the first driving sprocket and the first driven sprocket. One of the first driving sprocket and the first driven sprocket is located outside the heat-setting chamber, and the other of the first driving sprocket and the first driven sprocket is located inside the heat-setting chamber. The first conveyor chain includes a first upper chain, a first lower chain, and a first rotary chain disposed between the first upper chain and the first lower chain. The first rotary chain has two parts, front and rear. The front part of the first rotary chain meshes with one of the first driving sprocket and the first driven sprocket, and the rear part of the first rotary chain meshes with the other of the first driving sprocket and the first driven sprocket. The first upper chain and the first lower chain are parallel and symmetrical to each other. The first upper chain passes through the heating and shaping unit from front to back, and the first lower chain passes through the heating and shaping unit from back to front. The second fabric conveying system includes a second chain conveying mechanism, which comprises a closed second conveying chain, a second driving sprocket, and a second driven sprocket. The second conveying chain wraps around the second driving sprocket and the second driven sprocket. One of the second driving sprocket and the second driven sprocket is located outside the heat setting chamber, and the other of the second driving sprocket and the second driven sprocket is located inside the heat setting chamber. The second conveyor chain includes a second upper chain, a second lower chain, and a second rotary chain disposed between the second upper chain and the second lower chain. The second rotary chain has two parts, front and rear. The front part of the second rotary chain meshes with one of the second driving sprocket and the second driven sprocket, and the rear part of the second rotary chain meshes with the other of the second driving sprocket and the second driven sprocket. The second upper chain and the second lower chain are parallel and symmetrical to each other. The second upper chain passes through the heating and shaping unit from front to back, and the second lower chain passes through the heating and shaping unit from back to front.

[0013] Optionally, the first fabric infeeding area equipment, the first fabric conveying system, the first fabric outfeeding area equipment, and the second fabric infeeding area equipment, the second fabric conveying system, and the second fabric outfeeding area equipment are arranged symmetrically along the length of the tenter frame.

[0014] Furthermore, the heat-setting chamber has a modular structure, consisting of several heating and setting units connected front to back. The first fabric conveying system includes a first chain conveying mechanism, which comprises a closed first conveying chain, a first driving sprocket, and a first driven sprocket. The first conveying chain wraps around the first driving sprocket and the first driven sprocket. One of the first driving sprocket and the first driven sprocket is located outside the heat-setting chamber, and the other of the first driving sprocket and the first driven sprocket is located inside the heat-setting chamber. The first conveyor chain includes a first upper chain, a first lower chain, and a first rotary chain disposed between the first upper chain and the first lower chain. The first rotary chain has two parts, front and rear. The front part of the first rotary chain meshes with one of the first driving sprocket and the first driven sprocket, and the rear part of the first rotary chain meshes with the other of the first driving sprocket and the first driven sprocket. The first upper chain and the first lower chain are parallel and symmetrical to each other. The first upper chain passes through the heating and shaping unit from front to back, and the first lower chain passes through the heating and shaping unit from back to front. The second fabric conveying system includes a second chain conveying mechanism, which comprises a closed second conveying chain, a second driving sprocket, and a second driven sprocket. The second conveying chain wraps around the second driving sprocket and the second driven sprocket. One of the second driving sprocket and the second driven sprocket is located outside the heat setting chamber, and the other of the second driving sprocket and the second driven sprocket is located inside the heat setting chamber. The second conveyor chain includes a second upper chain, a second lower chain, and a second rotary chain disposed between the second upper chain and the second lower chain. The second rotary chain has two parts, front and rear. The front part of the second rotary chain meshes with one of the second driving sprocket and the second driven sprocket, and the rear part of the second rotary chain meshes with one of the second driving sprocket and the second driven sprocket. The second upper chain and the second lower chain are parallel and symmetrical to each other. The second upper chain passes through the heating and shaping unit from back to front, and the second lower chain passes through the heating and shaping unit from front to back.

[0015] Furthermore, the heat setting chamber includes a hot air system and a dehumidification system. The hot air system consists of a heater, an air inlet duct, a hot air fan, an air outlet duct, and terminal air ducts. The heater is connected to the inlet end of the air inlet duct, and the outlet end of the air inlet duct is connected to the air inlet of the hot air fan. The air outlet duct connects the terminal air duct and the hot air blower outlet. The terminal air duct is provided with a hot air outlet facing the fabric. The thickness of the terminal air duct is less than the diameter of the steering sprocket of the shaping section. The dehumidification system includes a dehumidification port located on the top of the heating box, a dehumidification fan, and a dehumidification pipe connecting the dehumidification port and the dehumidification fan.

[0016] Furthermore, the exhaust vents are provided with several evenly spaced outlets, and one or more exhaust fans are provided, with one or more exhaust fans connected to the exhaust vents through the exhaust pipes.

[0017] Furthermore, the heating and shaping unit is provided with two sets of terminal air ducts, which are arranged from top to bottom as a first terminal air duct and a second terminal air duct. The first terminal air duct has a first upper hot air outlet and a first lower hot air outlet. The first upper chain and the second upper chain are both located between the first upper hot air outlet and the first lower hot air outlet. The air outlet surfaces of the first upper hot air outlet and the first lower hot air outlet are parallel to each other. The second terminal air is provided with a second upper hot air outlet and a second lower hot air outlet. The first lower chain and the second lower chain are both located between the second upper hot air outlet and the second lower hot air outlet. The air outlet surfaces of the second upper hot air outlet and the second lower hot air outlet are parallel to each other.

[0018] Furthermore, the cross-section of the terminal air duct gradually decreases from the first side to the second side, the first side of the terminal air duct is connected to the air outlet duct, the second end of the terminal air duct is closed, and the upper hot air outlet and the lower hot air outlet are evenly arranged along the length of the terminal air duct.

[0019] The beneficial effects of this utility model are as follows: The double-head tenter frame disclosed in this application, through a first fabric inlet area device, a second fabric inlet area device, a first fabric outlet area device, a second fabric outlet area device, a first fabric conveying system, a second fabric conveying system, and a heat setting chamber, enables one tenter frame to process two pieces of fabric simultaneously, thereby doubling the processing efficiency of the tenter frame. While ensuring the doubling of processing efficiency, it also reduces the cost of processing fabric, reduces the total heat dissipation surface area of ​​the tenter frame, reduces heat waste, and improves thermal efficiency.

[0020] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of a specific example of the tenter frame of this utility model; Figure 2 A simplified top view showing the relationship between the fabric conveying system and the heat setting chamber; Figure 3 for Figure 1The diagram shows the structure of the heat setting chamber of the tenter frame. Figure 4 A simplified schematic diagram showing the relationship between the fabric conveying system and the heat setting chamber; Figure 5 This is a schematic diagram of the hot air system; Detailed Implementation

[0022] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The chain conveying mechanism of this utility model will be further described with reference to the accompanying drawings.

[0024] like Figure 1 and Figure 2 As shown, the tenter frame described in this embodiment includes a frame 150, on which are provided a fabric feeding area device, a heat setting chamber for heating and setting the fabric, a fabric output area device, and a fabric conveying system for conveying the fabric from the fabric feeding area into the heat setting chamber and then from the heat setting chamber to the fabric output area.

[0025] The fabric feeding area equipment includes a first fabric feeding area equipment 101 and a second fabric feeding area equipment 201; the fabric output area equipment includes a first fabric output area equipment 102 and a second fabric output area equipment 202; and the fabric conveying system includes a first fabric conveying system 104 and a second fabric conveying system 204.

[0026] The end where the fabric inlet device 101 is located is the front end, and the end where the fabric inlet device 201 is located is the back end.

[0027] The first fabric feeding area device 101 and the second fabric feeding area device 201 are symmetrically arranged one in front of the other, and the first fabric and the second fabric conveyed by the first fabric feeding area device 101 and the second fabric feeding area device 201 move in opposite directions.

[0028] The first fabric conveying system 104 includes a first chain conveying mechanism 108 and a first power unit 107. Two sets of the first chain conveying mechanism 108 are arranged side by side and move synchronously. The first power unit 107 is connected to the first chain conveying mechanism 108 and drives its movement. The first power unit 107 is a drive motor for the chain conveying mechanism. The first chain conveying mechanism 108 is provided with a needle plate for fixing the fabric.

[0029] The second fabric conveying system 204 includes a second chain conveying mechanism 208 and a second power device 207. Two sets of the second chain conveying mechanism 208 are arranged side by side and move synchronously. The second power device 207 is connected to the second chain conveying mechanism 208 and drives its movement. The second power device 207 is a drive motor for the chain conveying mechanism. The second chain conveying mechanism 208 is provided with a needle plate for fixing the fabric.

[0030] like Figure 2 , Figure 3 and Figure 4 As shown, the heat setting chamber 103 includes a heating box 114, which is a modular structure consisting of 21 heating and setting units 113 connected in series.

[0031] The heating box 114 is equipped with a hot air system and a dehumidification system. The hot air system includes a heater 120, an air inlet duct 121, a hot air fan 122, an air outlet duct 123, and a terminal air duct. Each set of heater 120, air inlet duct 121, hot air fan 122, air outlet duct 123, and terminal air duct constitutes a hot air unit. Each heating and shaping unit 113 in the 3rd, 4th, 7th, 8th, 12th, 13th, 16th, 17th, 20th, and 21st sections from front to back is equipped with a hot air unit.

[0032] Each hot air unit includes a heater 120 located at the lower right of the heating box 114. The left end of the heater 120 is connected to the right end of the air inlet duct 121, and the left end of the air inlet duct 121 is connected to the right end of the hot air fan 122. The upper end of the hot air fan 122 is connected to the air outlet duct 123, and the right end of the air outlet duct 123 is connected to the terminal air duct. The thickness of the terminal air duct is less than the diameter of the sprocket. The hot air fan 122 is equipped with a motor.

[0033] The first chain conveying mechanism 108 includes a closed first conveying chain, a first driving sprocket, and a first driven sprocket. The first conveying chain is wrapped around the first driving sprocket and the first driven sprocket. The first driving sprocket is located outside the heat setting chamber, the first driven sprocket is located inside the heat setting chamber, and the first driving sprocket is located in front of the first driven sprocket.

[0034] The first transmission chain includes a first upper chain, a first lower chain, and a first rotary chain disposed between the first upper chain and the first lower chain. The first rotary chain has two parts, front and rear. The first rotary chain disposed at the front end meshes with a first driving sprocket, and the first rotary chain disposed at the rear end meshes with a first driven sprocket. The first upper chain and the first lower chain are parallel and symmetrical to each other. The first upper chain passes from front to back from the first heating and shaping unit 113 to the eleventh heating and shaping unit 113, and the first lower chain passes from back to front from the eleventh heating and shaping unit 113 to the first heating and shaping unit 113.

[0035] The second chain conveying mechanism 108 includes a closed second conveying chain, a second driving sprocket, and a second driven sprocket. The second conveying chain is wrapped around the second driving sprocket and the second driven sprocket. The second driving sprocket is located outside the heat setting chamber, the second driven sprocket is located inside the heat setting chamber, and the first driving sprocket is located behind the first driven sprocket.

[0036] The second transmission chain includes a second upper chain, a second lower chain, and a second rotary chain disposed between the second upper chain and the second lower chain. The second rotary chain has two parts, front and rear. The second rotary chain disposed at the front end meshes with the second driven sprocket, and the second rotary chain disposed at the rear end meshes with the second driving sprocket. The second upper chain and the second lower chain are parallel and symmetrical to each other. The second upper chain passes from the 21st heating and shaping unit 113 to the 11th heating and shaping unit 113 from back to front, and the second lower chain passes from the 11th heating and shaping unit 113 to the 21st heating and shaping unit 113 from back to front.

[0037] There are two sets of terminal air ducts, which are arranged from top to bottom as the first terminal air duct and the second terminal air duct. The first terminal air duct has a first upper hot air outlet 126 and a first lower hot air outlet 127. The air outlet surfaces of the first upper hot air outlet 126 and the first lower hot air outlet 127 are parallel to each other. The second terminal air duct has a second upper hot air outlet 128 and a second lower hot air outlet 129. The air outlet surfaces of the second upper hot air outlet 128 and the second lower hot air outlet 129 are parallel to each other.

[0038] The first upper hot air outlet 126 and the first lower hot air outlet 127, located in the heating and shaping units 113 of sections 3, 4, 7, 8 and 12, are respectively located above and below the first upper chain.

[0039] The second upper hot air outlet 128 and the second lower hot air outlet 129, located in the heating and shaping units 113 of sections 3, 4, 7, 8 and 12, are respectively located above and below the first lower chain.

[0040] The first upper hot air outlet 126 and the first lower hot air outlet 127, located in the heating and shaping units 113 of sections 12, 13, 16, 17, 20 and 21, are respectively located above and below the second upper chain.

[0041] The second upper hot air outlet 128 and the second lower hot air outlet 129, located in the heating and shaping units 113 of sections 12, 13, 16, 17, 20, and 21, are respectively located above and below the second lower chain.

[0042] The cross-section of the terminal duct gradually decreases from left to right. The left side of the terminal duct is connected to the air outlet duct, and the right side of the terminal duct is closed.

[0043] The upper and lower hot air outlets are evenly distributed along the length of the terminal air duct.

[0044] The dehumidification system includes a dehumidification outlet 124, a dehumidification fan 125, and a dehumidification duct 126. The dehumidification duct 126 connects the dehumidification outlet 124 and the dehumidification fan 125. The heating chamber 114 between sections 1 and 2 (heating and shaping units 113) has two symmetrically arranged exhaust vents 124 on its top. The heating chamber 114 between sections 3 and 4 (heating and shaping units 113) also has two symmetrically arranged exhaust vents 124 on its top. The heating chamber 114 between sections 5 and 6 (heating and shaping units 113) also has two symmetrically arranged exhaust vents 124 on its top. The heating chamber 114 between sections 7 and 8 (heating and shaping units 113) also has two symmetrically arranged exhaust vents 124 on its top. The heating chamber 114 between sections 9 and 10 (heating and shaping units 113) also has two symmetrically arranged exhaust vents 124 on its top. Section 12... The heating box 114 between the 13th and 15th heating and shaping units 113 has two symmetrical front-to-back dehumidification ports 124 on its top. The heating box 114 between the 14th and 15th heating and shaping units 113 has two symmetrical front-to-back dehumidification ports 124 on its top. The heating box 114 between the 16th and 17th heating and shaping units 113 has two symmetrical front-to-back dehumidification ports 124 on its top. The heating box 114 between the 18th and 19th heating and shaping units 113 has two symmetrical front-to-back dehumidification ports 124 on its top. The heating box 114 between the 20th and 21st heating and shaping units 113 has two symmetrical front-to-back dehumidification ports 124 on its top.

[0045] Each pair of symmetrical exhaust ports 124 are connected to an exhaust fan 125 via exhaust pipe 126, and the water vapor inside the heating box 114 is discharged through the main pipe to keep the inside of the heating box 114 dry.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double-head tenter frame, comprising a fabric infeed area, a fabric outlet area, a heat setting chamber for heating and setting the fabric, and a fabric conveying system for conveying the fabric from the infeed area into the heat setting chamber and then from the heat setting chamber to the outlet area, characterized in that, The fabric feeding area equipment includes a first fabric feeding area equipment and a second fabric feeding area equipment; the fabric output area equipment includes a first fabric output area equipment and a second fabric output area equipment; the fabric conveying system includes a first fabric conveying system for conveying fabric from the first fabric feeding area into the heat setting chamber and then from the heat setting chamber to the first fabric output area, and a second fabric conveying system for conveying fabric from the second fabric feeding area into the heat setting chamber and then from the heat setting chamber to the second fabric output area. The fabric conveying system includes two sets of chain conveying mechanisms arranged side by side and moving synchronously, as well as a power device for driving the chain conveying mechanisms. The chain conveying mechanism includes a conveying chain, several sprockets, and a track supporting the chain. The conveying chain is equipped with a fixing mechanism for fixing the fabric.

2. The double-head tenter frame as described in claim 1, characterized in that, The first fabric infeeding area equipment, the first fabric conveying system, and the first fabric outfeeding area equipment are arranged side by side with the second fabric infeeding area equipment, the second fabric conveying system, and the second fabric outfeeding area equipment along the width direction of the tenter frame.

3. The double-head tenter frame as described in claim 1, characterized in that, The first fabric infeeding area equipment, the first fabric conveying system, the first fabric outfeeding area equipment, the second fabric infeeding area equipment, the second fabric conveying system, and the second fabric outfeeding area equipment are arranged symmetrically along the length of the tenter frame.

4. A double-head tenter frame as described in claim 2, characterized in that, The heat-setting chamber is a modular structure, composed of several heating and setting units connected front to back. The first fabric conveying system includes a first chain conveying mechanism, which comprises a closed first conveying chain, a first driving sprocket, and a first driven sprocket. The first conveying chain wraps around the first driving sprocket and the first driven sprocket. One of the first driving sprocket and the first driven sprocket is located outside the heat-setting chamber, and the other of the first driving sprocket and the first driven sprocket is located inside the heat-setting chamber. The first conveyor chain includes a first upper chain, a first lower chain, and a first rotary chain disposed between the first upper chain and the first lower chain. The first rotary chain has two parts, front and rear. The front part of the first rotary chain meshes with one of the first driving sprocket and the first driven sprocket, and the rear part of the first rotary chain meshes with the other of the first driving sprocket and the first driven sprocket. The first upper chain and the first lower chain are parallel and symmetrical to each other. The first upper chain passes through the heating and shaping unit from front to back, and the first lower chain passes through the heating and shaping unit from back to front. The second fabric conveying system includes a second chain conveying mechanism, which comprises a closed second conveying chain, a second driving sprocket, and a second driven sprocket. The second conveying chain wraps around the second driving sprocket and the second driven sprocket. One of the second driving sprocket and the second driven sprocket is located outside the heat setting chamber, and the other of the second driving sprocket and the second driven sprocket is located inside the heat setting chamber. The second conveyor chain includes a second upper chain, a second lower chain, and a second rotary chain disposed between the second upper chain and the second lower chain. The second rotary chain has two parts, front and rear. The front part of the second rotary chain meshes with one of the second driving sprocket and the second driven sprocket, and the rear part of the second rotary chain meshes with the other of the second driving sprocket and the second driven sprocket. The second upper chain and the second lower chain are parallel and symmetrical to each other. The second upper chain passes through the heating and shaping unit from front to back, and the second lower chain passes through the heating and shaping unit from back to front.

5. A double-head tenter frame as described in claim 3, characterized in that, The heat-setting chamber is a modular structure, composed of several heating and setting units connected front to back. The first fabric conveying system includes a first chain conveying mechanism, which comprises a closed first conveying chain, a first driving sprocket, and a first driven sprocket. The first conveying chain wraps around the first driving sprocket and the first driven sprocket. One of the first driving sprocket and the first driven sprocket is located outside the heat-setting chamber, and the other of the first driving sprocket and the first driven sprocket is located inside the heat-setting chamber. The first conveyor chain includes a first upper chain, a first lower chain, and a first rotary chain disposed between the first upper chain and the first lower chain. The first rotary chain has two parts, front and rear. The front part of the first rotary chain meshes with one of the first driving sprocket and the first driven sprocket, and the rear part of the first rotary chain meshes with the other of the first driving sprocket and the first driven sprocket. The first upper chain and the first lower chain are parallel and symmetrical to each other. The first upper chain passes through the heating and shaping unit from front to back, and the first lower chain passes through the heating and shaping unit from back to front. The second fabric conveying system includes a second chain conveying mechanism, which comprises a closed second conveying chain, a second driving sprocket, and a second driven sprocket. The second conveying chain wraps around the second driving sprocket and the second driven sprocket. One of the second driving sprocket and the second driven sprocket is located outside the heat setting chamber, and the other of the second driving sprocket and the second driven sprocket is located inside the heat setting chamber. The second conveyor chain includes a second upper chain, a second lower chain, and a second rotary chain disposed between the second upper chain and the second lower chain. The second rotary chain has two parts, front and rear. The front part of the second rotary chain meshes with one of the second driving sprocket and the second driven sprocket, and the rear part of the second rotary chain meshes with one of the second driving sprocket and the second driven sprocket. The second upper chain and the second lower chain are parallel and symmetrical to each other. The second upper chain passes through the heating and shaping unit from back to front, and the second lower chain passes through the heating and shaping unit from front to back.

6. A double-head tenter frame as described in claim 4, characterized in that, The heat setting chamber includes a hot air system and a dehumidification system. The hot air system consists of a heater, an air inlet duct, a hot air fan, an air outlet duct, and terminal air ducts. The heater is connected to the inlet end of the air inlet duct, and the outlet end of the air inlet duct is connected to the air inlet of the hot air fan. The air outlet duct connects the terminal air duct and the hot air blower outlet. The terminal air duct is provided with a hot air outlet facing the fabric. The thickness of the terminal air duct is less than the diameter of the steering sprocket of the shaping section. The dehumidification system includes a dehumidification port located on the top of the heating box, a dehumidification fan, and a dehumidification pipe connecting the dehumidification port and the dehumidification fan.

7. A double-head tenter frame as described in claim 6, characterized in that, The exhaust vents are provided with several evenly spaced outlets, and one or more exhaust fans are provided. The one or more exhaust fans are connected to the exhaust vents through the exhaust pipes.

8. A double-head tenter frame as described in claim 6 or claim 7, characterized in that, The heating and shaping unit is provided with two sets of terminal air ducts, which are arranged from top to bottom as a first terminal air duct and a second terminal air duct. The first terminal air duct has a first upper hot air outlet and a first lower hot air outlet. The first upper chain and the second upper chain are both located between the first upper hot air outlet and the first lower hot air outlet. The air outlet surfaces of the first upper hot air outlet and the first lower hot air outlet are parallel to each other. The second terminal air is provided with a second upper hot air outlet and a second lower hot air outlet. The first lower chain and the second lower chain are both located between the second upper hot air outlet and the second lower hot air outlet. The air outlet surfaces of the second upper hot air outlet and the second lower hot air outlet are parallel to each other.

9. A double-head tenter frame as described in claim 8, characterized in that, The cross-section of the terminal air duct gradually decreases from the first side to the second side. The first side of the terminal air duct is connected to the air outlet duct. The second end of the terminal air duct is closed. The upper hot air outlet and the lower hot air outlet are evenly arranged along the length of the terminal air duct.

Images