Chain conveyor for a tentering machine

Abstract

The utility model discloses a chain conveying mechanism for tenter, chain is engaged with sprocket through the cooperation of first cooperation structure and second cooperation structure, and chain slides on the track, and the inside of chain is in contact with the inside side wall of track, and the inside of chain is equipped with needle plate, and chain is composed by the head-to-tail connection of chain unit, and chain unit includes at least two chain links, and each chain link in chain unit is rotatably connected at the head and tail, and the rotatable connection in chain unit includes at least one horizontal rotary connection, and the tail end of last chain link of former chain unit is perpendicularly rotatably connected with the head end of first chain link of latter chain unit. The chain conveying mechanism for tenter disclosed by the application can make the vertical rotation and horizontal rotation between chain links through horizontal pin shaft and vertical pin shaft, prolong the service life of chain, reduce the volume of tenter, and the chain is equipped with bearing and pressing strip, provides the stress support point, prevents the chain from turning over, and the limiting baffle can prevent the chain from being separated from sprocket.

Description

Technical Field

[0001] This utility model relates to the field of chain conveying mechanisms, and in particular to a chain conveying mechanism for a tenter frame. Background Technology

[0002] A chain conveyor mechanism includes a chain, sprockets, and conveying components. The chain conveyor consists of a driving sprocket mounted on a parallel shaft, a driven sprocket, and a chain wound around the sprockets. During operation, the chain and sprockets work together to transmit motion and power, thereby achieving the purpose of material conveying.

[0003] The chain conveyor mechanism is now applied to the tenter frame, which is used to stretch and heat-set the fabric. Its basic working principle is that the fabric is clamped on the chain conveyor mechanism and then conveyed into the 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 mechanism.

[0004] Based on the changes in fabric processing steps, the fabric conveying process is divided into an upper section and a setting section. In the upper section, the fabric is stretched by a chain conveyor mechanism with gradually widening gaps. In the setting section, the fabric is heated and set in an oven. During the stretching process, significant stress is generated, and the needle plate is subjected to stress and tension. This can cause the chain to tip over during operation, making it impossible to stretch the fabric.

[0005] Traditional chains consist of inner and outer links, comprising five small components: inner link plate, outer link plate, pin, bushing, and rollers. The inner link plate and bushing are fixed together by an interference fit, while the outer link plate and pin are fixed together by an interference fit. The rollers, bushing, and pin are fitted with clearance to allow the inner and outer links to rotate in a plane perpendicular to the pin.

[0006] Taking a traditional chain with a pin parallel to the horizontal plane placed horizontally as an example, because the links are connected by a vertical rotational relationship, the chain can bend in the vertical plane but is difficult to bend horizontally. Therefore, traditional chains are suitable for applications where the chain's movement path is within a single plane.

[0007] However, traditional chains are not suitable for application scenarios where the chain's movement path extends beyond a plane.

[0008] For example, in the double-layer tenter frame disclosed in Chinese utility patent CN219908143U, the chain not only bends in the vertical plane to form a closed motion path, but also, in the horizontal plane, to gradually widen the fabric width, the upper section of the chain needs to bend at an angle relative to the setting section. When using a traditional chain, this bending of the upper section relative to the setting section can only be achieved through a very long path based on the clearance between the sleeve and the pin. This not only passively increases the length of the equipment but also causes serious problems of abnormal chain wear. Summary of the Invention

[0009] The directional description of the chain structure in this utility model is based on the state in which a section of the chain is placed horizontally in a straight line.

[0010] In this invention, the inner side of the chain conveyor mechanism refers to the side closest to the fabric, and the outer side is the opposite side.

[0011] The purpose of this invention is to construct a chain conveyor mechanism that can move in both vertical and horizontal directions, based on the existing chain conveyor mechanism and the need to reduce the size of the tenter frame and improve the chain movement path to be applicable to application scenarios beyond a single plane.

[0012] A chain conveying mechanism for a tenter frame includes a chain, a sprocket, and a track, characterized in that the chain is provided with a first mating structure, the sprocket is provided with a second mating structure, and the chain engages with the sprocket through the cooperation of the first mating structure and the second mating structure;

[0013] The chain has sliding parts on both sides and bearings at the top and bottom.

[0014] The track is provided with grooves and pressure bars. The bearing rolls within the grooves. Support surfaces are provided on both sides of the grooves to support the sliding parts of the chain on both sides. The pressure bars press against the upper part of the outer side of the chain. The outer sliding part slides between the pressure bars and the outer support surfaces, while the inner sliding part slides on the inner support surfaces.

[0015] The chain has a needle plate on its inner side.

[0016] The sliding parts are evenly spaced along the length of the chain.

[0017] The bearings are evenly spaced along the length of the chain.

[0018] The needle plates are evenly spaced along the length of the chain.

[0019] The chain is composed of multiple chain units with the same structure connected end to end. Each chain unit includes at least two links. The links in the chain unit are rotatably connected end to end. The rotatable connection in the chain unit includes at least one horizontal rotatable connection. The tail end of the last link of the preceding chain unit is rotatably connected perpendicularly to the head end of the first link of the following chain unit.

[0020] Furthermore, the chain unit includes two chain links, the beginning of the first chain link being rotatably connected to the end of the second chain link of the adjacent chain unit in front, and the end of the second chain link being rotatably connected to the beginning of the first chain link of the adjacent chain unit behind.

[0021] Furthermore, the first or second link is provided with a mating structure.

[0022] Optionally, the first link and the second link are respectively provided with a mating structure.

[0023] Furthermore, the chain unit includes three links. The beginning of the first link is rotatably connected to the end of the third link of the adjacent chain unit in front. The end of the first link is rotatably connected to the beginning of the second link in a horizontal direction. The end of the second link is rotatably connected to the beginning of the third link in a vertical direction. The end of the third link is rotatably connected to the beginning of the first link of the adjacent chain unit behind.

[0024] Furthermore, the first link, the second link, and the third link are each provided with a mating structure.

[0025] Optionally, the first or second link has a mating structure, and the third link has a mating structure.

[0026] Furthermore, the link is a plate-like structure and is horizontally arranged, the direction of the link is the same as the direction of the groove, and the groove is horizontally arranged with its opening facing upward.

[0027] Furthermore, the chain link has a plate-like structure and is horizontally arranged. The first chain link has a three-layer plate-like structure, consisting of a first plate, a second plate, and a third plate from top to bottom.

[0028] The second link is a single-layer plate structure, including a fourth plate, the tail end of which is located between the head ends of the first plate and the third plate.

[0029] The tail end of the second plate is hinged to the head end of the fourth plate of the adjacent chain unit behind it via a horizontally set horizontal pin. The tail end of the fourth plate is rotatably connected to the head ends of the first plate and the third plate via a vertically set vertical pin. The head end of the fourth plate is hinged to the tail end of the second plate of the adjacent chain unit in front of it via a horizontally set horizontal pin.

[0030] Furthermore, a sleeve is fixedly installed at the tail end of the second plate, and a sleeve is fixedly installed at the head end of the fourth plate.

[0031] The sleeve provided at the tail end of the second plate is coaxial with the sleeve provided at the head end of the fourth plate in the adjacent chain unit.

[0032] The sleeve provided on the first end of the fourth plate is coaxial with the sleeve provided on the tail end of the second plate in the adjacent chain unit.

[0033] Each coaxial sleeve is equipped with a horizontal pin.

[0034] To prevent the chain from coming off as it moves on the sprocket, the chain conveying mechanism includes a limiting component.

[0035] Furthermore, the limiting component is a limiting baffle disposed on the sprocket, and the limiting baffle has two pieces, which are respectively disposed on the inner side and the outer side of the sprocket.

[0036] The second mating structure is disposed between the inner limiting baffle and the outer limiting baffle.

[0037] The outer side of the inner limiting baffle and the inner side of the outer limiting baffle are respectively provided with bearing limiting parts, and the bearing is in contact with the bearing limiting parts.

[0038] Optionally, the limiting component is a limiting baffle disposed on the chain, wherein the limiting baffle has two pieces, which are respectively disposed on the inner and outer sides of the chain.

[0039] The first mating structure is disposed between the inner limiting baffle and the outer limiting baffle.

[0040] Furthermore, the first mating structure is configured as an arc shape, and the arc-shaped surface of the first mating structure engages with the arc-shaped groove on the second mating structure.

[0041] Furthermore, the material used to make the pressure strip is graphite.

[0042] The beneficial effects of this utility model are as follows: The chain conveying mechanism for a tenter frame disclosed in this application allows the chain links to rotate relatively vertically between each other via a horizontal pin and to rotate relatively horizontally between each other via a vertical pin. This enables the chain to be suitable for applications where the movement path exceeds a single plane and for complex working conditions. It avoids abnormal wear caused by unconventional use of traditional chains due to work requirements. This not only reduces the limitations of the traditional chain's movement path but also effectively extends the chain's service life. When the tenter frame is stretching fabric, the chain can axially stretch the fabric in a shorter working stroke, greatly reducing the size of the tenter frame and saving working space. The chain is equipped with bearings and pressure bars, which not only provide support points for the horizontal stress on the chain but also effectively prevent the chain from tipping over due to the reaction force of the fabric during movement, ensuring the working stability of the tenter frame. Limiting baffles set on the chain or sprockets can restrict the chain's movement path and prevent the chain from disengaging from the sprocket during operation.

[0043] 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

[0044] 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.

[0045] Figure 1 This is a schematic diagram of the overall structure of a specific example of the chain conveyor mechanism of this utility model;

[0046] Figure 2 This is a schematic diagram of a specific example of the first type of chain in the chain conveying mechanism of this utility model;

[0047] Figure 3 yes Figure 2 A magnified view of the local structure;

[0048] Figure 4 This is a schematic diagram of a specific example of the second type of chain in the chain conveying mechanism of this utility model;

[0049] Figure 5 yes Figure 4 A magnified view of the local structure;

[0050] Figure 6 yes Figure 2 Top view;

[0051] Figure 7 This is a schematic diagram of a specific example of the first type of chain belt bearing in the chain conveyor mechanism of this utility model;

[0052] Figure 8 This is a schematic diagram of the first type of chain-track cooperation structure in the chain conveying mechanism of this utility model;

[0053] Figure 9 This is a schematic diagram of the sprocket with a limiting baffle in the chain conveying mechanism of this utility model;

[0054] Figure 10 yes Figure 9 A schematic diagram of the cross-sectional structure;

[0055] Figure 11 This is a schematic diagram of a specific example of the sprocket in the chain conveyor mechanism of this utility model;

[0056] Figure 12 This is a schematic diagram of the first mating structure with a limiting baffle in the chain conveyor mechanism of this utility model;

[0057] In the diagram: 101. Second link (A); 102. First link (A); 104. Fourth plate (A); 105. First plate (A); 106. Vertical pin (A); 107. First mating structure (A); 108. Second sleeve; 110. Bearing; 111. Second plate (A); 112. Third plate (A); 113. Second support; 114. Pressing member; 115. Needle plate; 116. First sliding part; 117. Pressure strip; 118. Mounting plate; 119. Horizontal pin (A); 120. First sleeve; 121. Second sliding part; 122. First support; 201. Second link (B); 202. First link (B); 203. Sleeve (B); 204. Vertical pin (B); 205. Fourth plate (B); 206. Second plate (B) 207. First plate (B); 208. Third plate (B); 209. First mating structure (B); 220. Horizontal pin (B); 300. Sprocket; 301. Chain; 302. Second mating structure; 303. First limiting baffle; 304. Bearing limiting part; 312. Second limiting baffle. Detailed Implementation

[0058] 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.

[0059] The chain conveying mechanism of this utility model will be further described with reference to the accompanying drawings.

[0060] like Figure 1 As shown, the chain conveying mechanism described in this embodiment includes a chain 301 and a sprocket 300. The chain 301 meshes with the sprocket 300, and the chain 301 is driven by the sprocket 300.

[0061] A specific example of the first type of chain 301 is shown below. Figure 2 and Figure 3 As shown in the figure, a section of chain is placed horizontally on a plane. The first type of chain 301 is composed of multiple chain units with the same structure connected end to end. Each chain unit includes two links, which are plate-shaped structures and horizontally arranged, namely the second link (A) 101 and the first link (A) 102.

[0062] The first end of the second link (A) 101 is vertically rotatably connected to the tail end of the first link (A) 102 of the adjacent chain unit on the front side. The tail end of the second link (A) 101 is horizontally rotatably connected to the first end of the first link (A) 102. The tail end of the first link (A) 102 is vertically rotatably connected to the front end of the first link (A) 102 of the adjacent chain unit on the rear side.

[0063] The first link (A) 102 is a three-layer plate structure, consisting of the first plate (A) 105, the second plate (A) 111, and the third plate (A) 112 from top to bottom.

[0064] The second link (A) 101 is a single-layer plate structure, including a fourth plate (A) 104, the tail end of which is located between the head ends of the first plate (A) 105 and the third plate (A) 112.

[0065] The first end of the fourth plate (A) 104 is hinged to the tail end of the second plate (A) 111 of the adjacent chain unit on the front side via a horizontally set horizontal pin (A) 119. The tail end of the fourth plate (A) 104 is rotatably connected to the first plate (A) 105 and the first end of the third plate (A) 112 via a vertically set vertical pin (A) 106. The tail end of the second plate (A) 111 is hinged to the first end of the fourth plate (A) 104 of the adjacent chain unit on the rear side via a horizontally set horizontal pin (A) 119.

[0066] A mating structure (A) 107 is provided on the end face of the first plate (A) 105 and the third plate (A) 112 away from the second plate (A) 111.

[0067] Mounting plates 118 are provided on both the upper and lower end faces of the fourth plate (A) 104. The two mounting plates 118 are symmetrical about the fourth plate (A) 104. A first mating structure (A) 107 is provided on the end face of the mounting plate 118 away from the fourth plate (A) 104.

[0068] like Figure 6 As shown, 104 and 111 are vertically rotatably connected. The front end of 104 is provided with a first sleeve 120, and the rear end of 111 is provided with a second sleeve 108. The first sleeve 120 and the second sleeve 108 are coaxial.

[0069] A horizontal pin (A) 119 is disposed within a coaxial first sleeve 120 and second sleeve 108.

[0070] like Figure 7 As shown, a bearing 110 is provided on the end face of the first plate (A) 105 and the third plate (A) 112 away from the second plate (A) 111, and a bearing 110 is provided on the end face of the mounting plate 118 away from the fourth plate (A) 104.

[0071] A specific example of the second type of chain 301 Figure 4 and Figure 5 As shown in the figure, a section of chain is placed horizontally on a plane. The second type of chain 301 is composed of multiple chain units with the same structure connected end to end. Each chain unit includes two links, which are plate-shaped structures and horizontally arranged, namely the second link (B) 201 and the first link (B) 202.

[0072] The first end of the second link (B) 201 is vertically rotatably connected to the tail end of the first link (B) 202 of the adjacent chain unit on the front side. The tail end of the second link (B) 201 is horizontally rotatably connected to the first end of the first link (B) 202. The tail end of the first link (B) 202 is vertically rotatably connected to the front end of the second link (B) 201 of the adjacent chain unit on the rear side.

[0073] The first link (B) 202 is a three-layer plate structure, consisting of the first plate (B) 207, the second plate (B) 206, and the third plate (B) 208 from top to bottom.

[0074] The second link (B) 201 is a single-layer plate structure, including a fourth plate (B) 205, the tail end of which is located between the head ends of the first plate (B) 207 and the third plate (B) 208.

[0075] The first end of the fourth plate (B) 205 is hinged to the tail end of the second plate (B) 206 of the adjacent chain unit on the front side via a horizontally set horizontal pin (B) 220. The tail end of the fourth plate (B) 205 is rotatably connected to the first end of the first plate (B) 207 and the third plate (B) 208 via a vertically set vertical pin (B) 204. The tail end of the second plate (B) 206 is hinged to the first end of the fourth plate (B) 205 of the adjacent chain unit on the rear side via a horizontally set horizontal pin (B) 220.

[0076] A first mating structure (B) 209 is provided on the end face of the first plate (B) 207 and the third plate (B) 208 away from the second plate (B) 206.

[0077] The first mating structure (B) 209 is set in an arc shape, and the arc-shaped surface of the first mating structure (B) 209 meshes with the second mating structure on the sprocket.

[0078] like Figure 8 As shown, the chain 301 slides in the track, which has a groove. A pressing member 114 is fixedly installed on the inner side of the groove. The bearing 110 rolls in the groove and contacts the pressing surface of the pressing member 114. Support members are provided on both sides of the groove. The support member on the inner side is the first support member 122, and the support member on the outer side is the second support member 113.

[0079] A pressure strip 117 is provided on the track, and the pressure strip 117 is positioned above the second support member 113.

[0080] The chain 301 has a first sliding part 116 on its inner side and a second sliding part 121 on its outer side. The first sliding part 116 slides on the support surface of the first support member 122, and the second sliding part 121 slides between the support surface of the second support member 113 and the pressure bar 117.

[0081] A needle plate 115 is fixedly installed on the first sliding part 116.

[0082] Each link unit has a first sliding part 116, a second sliding part 121, and a needle plate 115, and the first sliding part 116, the second sliding part 121, and the needle plate 115 are evenly spaced along the length of the chain.

[0083] The pressure strip 117, the first support 122, the second support 113, and the pressing member 114 are all made of graphite.

[0084] To prevent the chain from coming off the sprocket while moving on the chain, the chain transmission mechanism described above includes a limiting component.

[0085] like Figure 9 and Figure 10As shown, the limiting component is a first limiting baffle 303 disposed on the sprocket 300. The first limiting baffle 303 has two pieces, which are respectively disposed on the inner and outer sides of the sprocket 300.

[0086] The sprocket 300 is provided with a second mating structure 302, which is located between the inner first limiting baffle 303 and the outer first limiting baffle 303.

[0087] Bearing limiting parts 304 are respectively provided on the outer side of the inner first limiting baffle 303 and the inner side of the outer first limiting baffle 303.

[0088] The bearing limiting part 304 is composed of a raised surface on the outer side of the inner first limiting baffle 303 and a raised surface on the inner side of the outer first limiting baffle 303. The bearing is in contact with the bearing limiting part 304.

[0089] like Figure 11 and Figure 12 As shown, the limiting component is a second limiting baffle 312 disposed on the chain 301. The second limiting baffle 312 has two pieces, which are respectively disposed on the inner side and the outer side of the chain 301.

[0090] The first mating structure (A) 107 or the first mating structure (B) 209 is disposed between the inner second limiting baffle 312 and the outer second limiting baffle 312.

[0091] The first mating structure (A) 107 is set to be arc-shaped, and the arc-shaped surface of the first mating structure (A) 107 engages with the arc-shaped groove on the second mating structure 302.

[0092] 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 chain conveying mechanism for a tenter frame, comprising a chain, sprockets, and a track, characterized in that, The chain is provided with a first mating structure, and the sprocket is provided with a second mating structure. The chain meshes with the sprocket through the cooperation of the first mating structure and the second mating structure. The chain slides on the track, with the inner side of the chain in contact with the inner sidewall of the track. The chain has a needle plate on its inner side. The chain is composed of multiple chain units with the same structure connected end to end. Each chain unit includes at least two links. The links in the chain unit are rotatably connected end to end. The rotatable connection in the chain unit includes at least one horizontal rotatable connection. The tail end of the last link of the preceding chain unit is rotatably connected perpendicularly to the head end of the first link of the following chain unit.

2. The chain conveyor mechanism for a tenter frame according to claim 1, characterized in that, The chain unit includes two links. The beginning of the first link is rotatably connected to the end of the second link of the adjacent chain unit in front, and the end of the second link is rotatably connected to the beginning of the first link of the adjacent chain unit behind.

3. The chain conveyor mechanism for a tenter frame according to claim 2, characterized in that, The first link and / or the second link are provided with a first mating structure.

4. The chain conveyor mechanism for a tenter frame according to claim 1, characterized in that, The chain unit includes three links. The beginning of the first link is rotatably connected to the end of the third link of the adjacent chain unit in front. The end of the first link is rotatably connected to the beginning of the second link in a horizontal direction. The end of the second link is rotatably connected to the beginning of the third link in a vertical direction. The end of the third link is rotatably connected to the beginning of the first link of the adjacent chain unit behind.

5. The chain conveying mechanism for a tenter frame according to claim 4, characterized in that, The first link, the second link, and the third link are each provided with a first mating structure.

6. The chain conveyor mechanism for a tenter frame according to claim 4, characterized in that, The first or second link has a mating structure, and the third link has a first mating structure.

7. The chain conveyor mechanism for a tenter frame according to claim 1, characterized in that, The track is provided with grooves and pressure bars. The pressure bars press against the upper outer side of the chain. Bearings are provided above and below the chain. The bearings roll in the grooves. The chain links are plate-shaped structures and are horizontally arranged. The arrangement direction of the chain links is the same as the arrangement direction of the grooves. The grooves are horizontally arranged and their openings face upwards.

8. The chain conveyor mechanism for a tenter frame according to claim 2, characterized in that, The chain has sliding parts on both sides, and the track has two support surfaces for supporting the chain. The inner sliding part slides on the inner support surface, and the outer sliding part slides on the outer support surface. The chain link is a plate-like structure and is horizontally arranged. The first chain link is a three-layer plate-like structure, consisting of a first plate, a second plate, and a third plate from top to bottom. The second link is a single-layer plate structure, including a fourth plate, the tail end of which is located between the head ends of the first plate and the third plate. The tail end of the second plate is hinged to the head end of the fourth plate of the adjacent rear chain unit via a horizontally arranged horizontal pin. The tail end of the fourth plate is rotatably connected to the head ends of the first and third plates via a vertically arranged vertical pin. The head end of the fourth plate is hinged to the tail end of the second plate of the adjacent front chain unit via a horizontally arranged horizontal pin. The plate is oriented in the same direction as the support surface and the sliding part.

9. The chain conveyor mechanism for a tenter frame according to claim 1, characterized in that, The chain conveying mechanism includes a limiting component, which is a limiting baffle disposed on the sprocket. The limiting baffle has two pieces, respectively disposed on the inner and outer sides of the sprocket. The second mating structure is disposed between the inner limiting baffle and the outer limiting baffle. The outer side of the inner limiting baffle and the inner side of the outer limiting baffle are respectively provided with bearing limiting parts, and the bearing is in contact with the bearing limiting parts.

10. A chain conveyor mechanism for a tenter frame according to claim 9, characterized in that, The limiting component is a limiting baffle disposed on the chain. Two limiting baffles are provided, one on the inner side and the other on the outer side of the chain. The first mating structure is disposed between the inner limiting baffle and the outer limiting baffle.

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