Base tube and base structure for a sley

Abstract

The utility model relates to a textile machinery technical field, and a characteristic is a base pipe of telescopic reed and telescopic reed base structure, and the top of base pipe of telescopic reed has the sealing assembly slide groove extending along the length direction of base pipe, and the sealing assembly slide groove is the double -deck dovetail groove of the upper and lower layer arrangement, and the double -deck dovetail groove is respectively the upper layer dovetail groove of the upper layer and the lower layer dovetail groove of the lower layer. Telescopic reed base structure includes the base pipe of telescopic reed and sealing assembly above, and the upper layer sealing strip and the middle layer sealing strip of sealing assembly are arranged in the upper layer dovetail groove, and the lower layer sealing strip of sealing assembly is arranged in the lower layer dovetail groove. Advantageous effects are: the design of the sealing assembly slide groove of the utility model makes the sealing strip can move in the independent channel, and do not interfere with each other, and save space.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, and in particular to a base tube for a telescopic reed and a base structure for the telescopic reed. Background Technology

[0002] The telescopic reed extends and retracts through a telescopic drive mechanism installed inside the base tube of the telescopic reed. The working environment of the telescopic reed is very harsh, so a sealing component needs to be installed on the base tube to prevent dust and impurities from entering.

[0003] The inventor's Chinese patent CN206109644U discloses a base tube and a fully enclosed telescopic reed base structure. The top of the base tube has a double-layered sliding groove extending along the length of the tube body, which is arranged in upper and lower layers. The upper sliding groove is used to install the locking block of the telescopic chain, and the lower sliding groove is a sealing component groove, which is used to install three layers of sealing strips so that the telescopic drive mechanism is completely placed in a fully enclosed environment, achieving durability and eliminating the need for frequent cleaning and maintenance.

[0004] However, the three layers of sealing strips are prone to colliding and getting stuck when moving within a single groove, causing malfunctions, or the sealing strips may be damaged, leading to sealing failure. Summary of the Invention

[0005] The technical problem to be solved by this utility model is that the existing sealing component has an unreasonable groove design, which makes the sealing strip easy to get stuck or damaged.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a base tube of a telescopic reed, with a sealing component groove extending along the length of the base tube at the top of the base tube. The sealing component groove is a double-layer dovetail groove arranged in upper and lower layers. The double-layer dovetail groove is an upper dovetail groove located in the upper layer and a lower dovetail groove located in the lower layer. Both the upper and lower dovetail grooves are dovetail grooves that are narrower at the top and wider at the bottom with the groove opening facing upwards. The groove opening of the lower dovetail groove is opened at the bottom of the lower dovetail groove, and the width of the bottom of the upper dovetail groove is greater than the width of the groove opening of the lower dovetail groove.

[0007] In some embodiments, optionally, the angle A between the sidewalls of the upper and lower dovetail grooves and the bottom plane of the groove is 40 to 50 degrees.

[0008] In some embodiments, the height of the upper dovetail groove may be twice the height of the lower dovetail groove.

[0009] In some embodiments, the included angle A is optionally 45 degrees.

[0010] In some embodiments, optionally, the lower dovetail groove is used for setting one sealing strip, and the upper dovetail groove is used for setting two sealing strips.

[0011] In some embodiments, optionally, the top of the base tube also has a pressure plate groove for the insertion of the locking block, the pressure plate groove is located above the sealing component groove, and the opening of the upper dovetail groove is opened at the bottom of the pressure plate groove.

[0012] A telescopic reed base structure includes the aforementioned telescopic reed base tube and a sealing assembly. The sealing assembly is a three-layer sealing assembly consisting of three sealing strips. The three sealing strips of the three-layer sealing assembly are, from top to bottom, an upper sealing strip, a middle sealing strip, and a lower sealing strip. The upper and middle sealing strips are disposed in an upper dovetail groove, and the lower sealing strip is disposed in a lower dovetail groove.

[0013] The beneficial effects of this utility model are: the design of the sliding groove of this sealing component allows the sealing strips to move in independent channels without interfering with each other.

[0014] The dovetail design not only secures the sealing strip but also prevents it from slipping into other spaces. It also saves space; if it were changed to a stepped design, there wouldn't be enough space, because the height of the base tube is constrained by other components and cannot be easily altered.

[0015] The upper dovetail groove is wider than the lower dovetail groove, and the shortest lower sealing strip is set in the lower dovetail groove. From a mechanical design perspective, this is the optimal design. This design not only improves the isolation effect between the lower and middle sealing strips, but also, because only one round hole is needed on the lower sealing strip, even if the width of the lower sealing strip is reduced, the impact on the strength of the lower sealing strip is small. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a cross-sectional view of the base tube of this utility model;

[0018] Figure 2 This is a cross-sectional view of the base tube of the present invention, which is equipped with a sealing component and a locking block;

[0019] Figure 3 This is a schematic diagram of the assembly of the base tube and the telescopic reed of this utility model;

[0020] In the diagram, 1. Upper dovetail groove, 2. Lower dovetail groove, 3. Upper sealing strip, 4. Middle sealing strip, 5. Lower sealing strip, 6. Pressure plate groove, 7. Locking block, 8. Base tube, 9. Telescopic reed. Detailed Implementation

[0021] like Figure 1 , 2As shown in Figure 3, a base tube for a telescopic reed has a sealing component groove extending along the length of the base tube 8 at its top. The sealing component groove is a double-layered dovetail groove, consisting of an upper dovetail groove 1 and a lower dovetail groove 2. Both the upper and lower dovetail grooves are narrower at the top and wider at the bottom, with their openings facing upwards. The opening of the lower dovetail groove 2 is located at its bottom. The width of the bottom of the upper dovetail groove 1 is greater than the width of the opening of the lower dovetail groove 2. The angle A between the sidewalls of both the upper and lower dovetail grooves and the bottom plane is 40-50 degrees. Preferably, the angle A is 45 degrees.

[0022] Similar to existing technology, the top of the base tube 8 also has a pressure plate groove 6 for the mounting of the locking block 7. The pressure plate groove 6 is located above the sealing component groove, and the opening of the upper dovetail groove 1 is located at the bottom of the pressure plate groove 6. Of course, it is also possible that when the structure of the telescopic reed 9 on the base tube 8 is changed, a groove with other functions may be provided above the sealing component groove, or the pressure plate groove 6 may be used to install other components of the telescopic reed 9. In this embodiment, the pressure plate groove 6 has a T-shaped structure.

[0023] A telescopic reed base structure includes the aforementioned telescopic reed base tube and a sealing assembly, wherein the sealing assembly is disposed within a sealing assembly groove.

[0024] The inventor's Chinese patent CN206109644U describes a three-layer sealing assembly with three sealing strips: an upper sealing strip 3, a middle sealing strip 4, and a lower sealing strip 5. Each sealing strip has a drive through-hole allowing a drive pin to pass through, which drives each sealing strip to move within a groove in the sealing assembly. The lengths of the upper sealing strip 3, middle sealing strip 4, and lower sealing strip 5 decrease sequentially. The drive through-holes in the upper and middle sealing strips 3 and 4 are elongated holes, while the drive through-hole in the lower sealing strip 5 is a circular hole.

[0025] To facilitate the installation of the 3-layer sealing assembly in the inventor's Chinese patent CN206109644U, the height of the upper dovetail groove 1 is more than twice the height of the lower dovetail groove 2. The height of the lower dovetail groove 2 is used for setting one sealing strip, namely the lower sealing strip 5, and the height of the upper dovetail groove 1 is used for setting two sealing strips, namely the upper sealing strip 3 and the middle sealing strip 4.

[0026] The inner cavity of the base tube 8 is used to install the telescopic drive mechanism that drives the telescopic reed 9 to extend and retract. The telescopic drive mechanism is connected to the telescopic reed 9 through a drive pin that passes upward through the base tube 8, thereby driving the telescopic reed 9 to extend and retract. Correspondingly, the bottom of the lower dovetail groove 2 has a through hole that allows the drive pin to pass through. The through hole is an elongated hole.

[0027] The upper sealing strip 3 and the middle sealing strip 4 are installed in the upper dovetail groove 1, and the lower sealing strip 5 is installed in the lower dovetail groove 2.

[0028] The design of the sliding grooves in this sealing assembly allows the sealing strips to move within independent channels without interfering with each other.

[0029] The dovetail groove design can both hold the sealing strip in place and prevent it from moving into other spaces, while also saving space. If it were changed to a stepped shape, there wouldn't be enough space, because the height of the base tube 8 is constrained by other components and cannot be changed arbitrarily.

[0030] The upper dovetail groove 1 has a wider groove than the lower dovetail groove 2, and the shortest lower sealing strip 5 is set in the lower dovetail groove 2. From a mechanical design perspective, this is the optimal design. This design not only improves the isolation effect between the lower sealing strip 5 and the middle sealing strip 4, but also, because only one round hole needs to be opened on the lower sealing strip 5, even if the width of the lower sealing strip 5 is reduced, the impact on the strength of the lower sealing strip 5 is small.

Claims

1. A base tube for a telescopic reed, characterized in that: in The top of the base tube (8) has a sealing component groove extending along the length of the base tube (8). The sealing component groove is a double-layer dovetail groove with upper and lower layers. The double-layer dovetail grooves are an upper dovetail groove (1) located on the upper layer and a lower dovetail groove (2) located on the lower layer. Both the upper dovetail groove (1) and the lower dovetail groove (2) are dovetail grooves that are narrow at the top and wide at the bottom with the groove opening facing upwards. The groove opening of the lower dovetail groove (2) is opened at the bottom of the lower dovetail groove (2). The width of the bottom of the upper dovetail groove (1) is greater than the width of the groove opening of the lower dovetail groove (2).

2. The base tube of the telescopic reed according to claim 1, characterized in that: The angle A between the sidewalls of the upper dovetail groove (1) and the bottom plane of the groove is 40 to 50 degrees.

3. The base tube of the telescopic reed according to claim 1, characterized in that: The height of the upper dovetail groove (1) is more than twice the height of the lower dovetail groove (2).

4. The base tube of the telescopic reed according to claim 2, characterized in that: The included angle A is 45 degrees.

5. The base tube of the telescopic reed according to claim 1 or 2, characterized in that: The lower dovetail groove (2) is used for setting one sealing strip, and the upper dovetail groove (1) is used for setting two sealing strips.

6. The base tube of the telescopic reed according to claim 1, characterized in that: The top of the base tube (8) also has a pressure plate groove (6) for the mounting of the locking block (7). The pressure plate groove (6) is located above the sealing component groove, and the opening of the upper dovetail groove (1) is opened at the bottom of the pressure plate groove (6).

7. A telescopic reed base structure, characterized in that: The device includes the base tube of the telescopic reed as described in claim 1 and a sealing assembly. The sealing assembly is a three-layer sealing assembly consisting of three sealing strips. The three sealing strips of the three-layer sealing assembly are, from top to bottom, an upper sealing strip (3), a middle sealing strip (4), and a lower sealing strip (5). The upper sealing strip (3) and the middle sealing strip (4) are disposed in the upper dovetail groove (1), and the lower sealing strip (5) is disposed in the lower dovetail groove (2).

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