KR100529730B1 - A safety door for knitting machine - Google Patents

Abstract

The present invention relates to a safety door, and more particularly to a safety door device used in knitting machines. The safety door is substantially cylindrical to fit in the cylindrical body of the knitting machine. In the present invention, the flexible member is applied to connect the sliding door to open the other door connected by the flexible member while any one of the sliding door is moved along the outline of the knitting machine body, the operation of closing the door Similarly, there is no need to use both hands. The safety door may be an automatic safety door mounted to an electric motor and not manually pulled or pushed to open or close the door.

Description

Safety Door for Knitting Machines {A SAFETY DOOR FOR KNITTING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to safety doors and, more particularly, to safety doors used in knitting machines.

Safety doors installed in knitting machines currently in use are rotatably mounted.

1 shows a conventional safety door 1 which is rotatably hinged to a knitting machine, the housing 11 of which is provided in an opening 14 for taking out the knitted fabric. 1 shows an open safety door 12. When opening the door 12, the door 12 is rotated outward to use a large space. The arrow in FIG. 1 shows the movement trajectory of the safety door 12 rotating around the door shaft 13 when the door is opened.

The problem with the rotatably mounted door is that it uses a large space when the door is opened, especially when the number of knitting machines in use is large, a very large space is required. The rotatably hinged door is divided into two types, namely, a single-piece door and a dual-piece door. Opening the unitary door requires a large space, while opening a two-piece door uses a relatively small space but still requires space for opening the door. However, the two-piece door has to go through two processes which are somewhat cumbersome during closing or opening.

Therefore, the present invention for solving the above problems, but adopts a sliding type sliding door so that the two parts of the door are connected to each other so that the other door is opened when opening one of the two doors. Closing the door is a similar operation to the above. The door of the present invention does not use space when opened, thus saving a lot of space.

The present invention relates to a safety door, and more particularly to a safety door used in knitting machines. In fact, after the knitting machine has completed the knitting process, it is necessary to remove the knitted products from the knitting machine. Accordingly, the knitting machine should be provided with an opening for taking out the knitted fabric. However, since the knitting machine is operated at a high speed, a safety door covering the opening of the knitting machine is necessary to avoid the accident of contacting the parts of the knitting machine. Only when the door is completely closed, it is necessary to allow the knitting machine to be operated.

Conventional safety doors are usually rotatably hinged and the door must open from the outside. Accordingly, when a knitting machine is installed, an additional space for moving the door should be secured. Typically, there are many knitting machines in the factory, so the cumulative space required for the placement of the knitting machines is very large.

It is therefore an object of the present invention to provide a safety door that does not require too much space when opening the door.

Another object of the present invention is to provide a safety door which can be easily opened and whose structure is simple.

Still another object of the present invention is to provide a safety door that can guarantee convenient and safe operation because it does not need to be manually opened or closed.

According to the present invention, the safety door shown in Figure 2 solves the above problems. The safety door is a dual-piece door consisting of a first sliding structure 2 and a second sliding structure 3. By means of the sliding structures 2, 3 the door can be moved along the upper and lower arc sliding slides 4, 8. Each part of the two-piece door is connected to each other by a flexible element so that one door of the two parts can be opened with one hand and at the same time the other door will open. The structure of the door is shown in Figs.

3 and 4 are schematic views showing a plan view of the upper arc-shaped sliding rail 4 and an installation state of the first flexible member 6. The flexible member 6 has its one end fixed to a first positioning point 21 of the first sliding structure 2 and extends clockwise around the upper arc-shaped sliding rail 4. Then, the circumference | surroundings of the guide roller 5 are rotated clockwise, and the said circular arc slide rail is enclosed counterclockwise. As a result, the other end of the flexible member 6 is fixed to the second positioning point 31 of the second sliding structure 3.

5 and 6 are schematic views showing a plan view of the lower arc-shaped sliding rail 8 and an installation state of the second flexible member 10. As shown in FIG. The flexible member 10 has its one end fixed to a fourth positioning point 33 of the second sliding structure 3, extending counterclockwise and guiding around the lower sliding rail 8. The circumference | surroundings of the roller 9 are rolled up counterclockwise, and the said circular arc-shaped sliding rail 8 is enclosed clockwise. As a result, the other end of the flexible member 10 is fixed to the third positioning point 23 of the first sliding structure 2.

Referring again to Figure 2, the lower arc-shaped sliding rail 8 and the upper arc-shaped sliding rail 4 are the same, and the lower sliding rail 8 is directly below the upper arc-shaped sliding rail 4. Is mounted on. The two sliding rails 4, 8 are connected by a plurality of supports 7 to form a structural unit. The first and second sliding structures 2, 3 are in a symmetrical relationship with respect to their shape, and the two structures 2, 3 are provided in the sliding means. According to a preferred embodiment of the present invention, the sliding means employs a plurality of guide rollers 22, 24, 32, 34. The rollers roll along the upper and lower arc slide rails 4 and 8.

The upper and lower sliding rails 4 and 8 are preferably formed of steel bars of “U” shape. According to the invention, the channel of the "U" type steel bar is opened outwards. Thus, after the first and second flexible members 6, 10 are mounted, a large portion of the members 6, 10 is hidden in the channel without being exposed. In this case, the thicknesses of the first and second sliding structures 2 and 3 will be reduced.

3 and 5 show the state of an open safety door. When the safety door is closed by applying a force to a predetermined portion of the door (ie, the first sliding structure 2 or the second sliding structure 3), the doors connected to each other by the flexible member 6 or 10 are closed. Can be closed at the same time. When a force is applied to the first sliding structure 2 to rotate the sliding structure 2 in the clockwise direction, the first flexible member 6 is released, but the second flexible member 10 is taut, so that the door is closed. The second sliding structure 3 is pulled to move counterclockwise until it is closed. In a state different from the above, when a force is applied to the second sliding structure 3 to rotate the structure 3 counterclockwise, the second flexible member 10 is released, but the first flexible member 6 ) Pulls the first sliding structure 2 to move clockwise until the door is taut and the door is closed. According to the invention, the guide roller 9 or the guide roller 5 performs a function similar to a conventional pulley. The relative motion of the flexible member 6 or 10 relative to the guide roller is a rolling motion rather than a sliding motion.

4 and 6 show the safety door in the closed state. When the door is closed, a force is applied to a predetermined portion of the sliding door (ie, the first sliding structure 2 or the second sliding structure 3). The two doors can be slid to open in opposite directions while being connected via a flexible member. The principle of opening the door is similar to the way in which the door is closed by employing a flexible member to complete the operation. The flexible member may be made of a chain or steel cable.

As shown in Fig. 7, the safety door can be mounted to an electrically driven transmission mechanism. The electric motor 26 may be used to drive the first sliding structure 2 or the second sliding structure 3 of the safety door. The chain 25 is mounted to the first or second sliding structure 2, 3, and the output shaft of the electric motor 26 is connected to the chain 25 for driving the first or second sliding structure 2, 3. The interlocking toothed wheels 27 can be mounted. Accordingly, the electric motor can be used to replace the manual operation of opening or closing the safety door.

Although the foregoing invention has been particularly shown and described with reference to the preferred embodiments thereof, it should be apparent to those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims. It is apparent that various modifications may be made in the detailed description.

The present invention as described above can minimize the space required when opening the door, it can be easily opened.

In addition, the present invention does not need to be manually opened or closed, which is convenient and safe.

1 is a schematic view showing a conventional hinged safety door.

2 is a perspective view showing a safety door according to an embodiment of the present invention to which two flexible mechanisms for moving the safety door are applied.

3 is a state diagram showing one of the flexible mechanisms when the safety door of FIG. 2 is opened.

Figure 4 is a state diagram showing the flexible mechanism when the safety door shown in Figure 3 is closed.

Fig. 5 is a state diagram showing another set of the flexible mechanisms when the safety door shown in Fig. 2 is opened.

Figure 6 is a state diagram showing the flexible mechanism when the safety door shown in Figure 5 is closed.

7 is a preferred embodiment of a safety door incorporating an electric drive mechanism.

* Explanation of symbols for main parts of the drawings

2, 3: first and second sliding structures

4, 8: upper and lower arc slide rails

5, 9: guide rollers 6, 10: first and second flexible members

Claims (11)

A first sliding structure having a partially cylindrical surface and having first and fourth positioning points and sliding means; Symmetrical to the first sliding structure, having second and third positioning points, sliding means and recesses facing the recesses of the first sliding structure, the recesses being correspondingly mounted at the same height as the first sliding structure A second sliding structure; An upper circular slide rail having a guide roller and mounted along a curved surface formed on the first and second sliding structures; A guide roller mounted directly below the upper arc slide rail and positioned symmetrically to a guide roller of the upper arc rail, supporting the upper arc rail, and forming a rigid structure; A lower arc sliding rail, wherein the first and second sliding mechanisms are horizontally moved by the sliding mechanism; An end portion fixed to a first positioning point of the first sliding structure, the other end extending along the upper arc-shaped sliding rail such that the other end is fixed to a second positioning point on the concave portion of the second sliding structure A first flexible member enclosing the guide roller of the upper arc sliding slide rail and extending along the upper arc sliding slide rail; And An end portion fixed to a third positioning point of the second sliding structure, the other end extending along the lower arc-shaped sliding rail such that the other end is fixed to a fourth positioning point on the recess of the first sliding structure A second flexible member that surrounds the guide roller of the lower arc slide rail and extends along the lower arc slide rail Safety door comprising a. The method of claim 1, And the sliding means mounted on the first and second sliding structures is in the form of a spool with flange ends. The method of claim 1, The upper and lower arc-shaped sliding rail of the U-shaped steel bar safety door. The method of claim 1, The first and second flexible member is a safety door made of a chain or steel cable. The method of claim 1, A safety door in which the first and second flexible members move relative to the guide roller in rolling motion. The method of claim 3, wherein The first and second sliding structures are mounted on the outside of the upper and lower arced rails, and the channels of the U-shaped steel bars are directed outwardly so that the first and second flexible members are concealed in the channels. . The method of claim 5, Safety door with the axis of the guide roller in the vertical direction. The method of claim 7, wherein A safety door in which the guide rollers are individually mounted in the channels of the upper and lower arc sliding slides. The method of claim 1, A safety door further comprising an electrically driven electric mechanism. The method of claim 9, And the chain driven by the electrically driven transmission mechanism is mounted to the first sliding structure or the second sliding structure. The method of claim 10, And an electric motor having an output shaft for driving the toothed wheel device mounted to the chain for the electrically driven transmission mechanism to drive the first sliding structure and the second sliding structure.