Circular knitting machine

Abstract

The utility model relates to the field of textile industry, in particular to a circular knitting machine which comprises a rack, and the rack is provided with a channel for taking out cloth. The machine frame is provided with a safety door covering the channel, and the safety door is hinged to a machine leg on the side face of the channel. A door opener is fixedly connected to the machine legs, a rocker arm assembly is connected to the output end of the door opener, and the end of the rocker arm assembly is connected to the safety door. According to the door opener, the rocker arm assembly drives the safety door to rotate relative to the machine legs along the hinged end of the safety door, and opening and closing control is achieved. Therefore, the circular knitting machine adopts automatic door opening and closing, and is more convenient and labor-saving to operate.

Description

Technical Field

[0001] The utility model relates to the field of textile industry, in particular to a circular knitting machine. Background Art

[0002] The circular knitting machine is an important knitting machine in the textile industry. It has the characteristics of high efficiency, high yield and high quality, and can be customized according to customer needs. Since the structure of the existing circular knitting machine determines that its cloth winding system is located under the machine, the circular knitting machine recorded in the Chinese utility model patent with announcement number "CN207904464U" can be referred to. The safety door is used to prevent external objects from contacting the cloth winding machine in the circular knitting machine. When the fabric is finished, the two safety doors need to be opened manually to remove the fabric. In the process of removing the fabric, if the operation is improper, the safety door will be hit, causing the safety door to swing, posing a safety hazard.

[0003] In addition, although the current safety doors have self-locking wheels that can fix the safety doors, the following problems still exist: the self-locking force is not enough, and there is a risk of wear and tear over time. Furthermore, some improper operating behaviors of the operator during the operation process will also bring safety hazards to personnel. For example: climbing the machine, especially the open-width machine (the door frame of the open-width machine is relatively large, and there is a flat surface that can just stand one person, but the standing surface is a sheet metal part, and the safety door will inevitably shake due to the self-locking force, affecting safety). Although such operating behaviors are not allowed, unpredictable risks must be considered as product development.

[0004] There are also some automatic safety doors on the market, but they still cannot completely solve the above problems. Summary of the invention

[0005] In order to solve the above problems, the purpose of the utility model is to provide a circular knitting machine, in which the door opener drives the safety door to rotate along its hinged end relative to the machine foot through the rocker assembly to achieve opening and closing control. In this way, the circular knitting machine adopts automatic door opening and closing, which is more convenient and labor-saving to operate.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A circular knitting machine comprises a frame, the frame is provided with a passage for taking out cloth; the frame is provided with a safety door covering the passage, the safety door is hinged on a machine foot on the side of the passage; it is characterized in that a door opener is fixedly connected to the machine foot, a rocker assembly is connected to the output end of the door opener, and the end of the rocker assembly is connected to the safety door.

[0008] The utility model adopts the above technical solution, which relates to a large circular knitting machine, in which the safety door is hinged on the machine foot and is used to open and close the passage for taking out the cloth. In the past, large circular knitting machines all needed to use manual door opening, while in the present solution, a door opener is provided on the machine foot, and the door opener is connected to the safety door through a rocker assembly. When opening and closing the safety door, the door opener operates, and the door opener drives the safety door to rotate along its hinged end relative to the machine foot through the rocker assembly to realize opening and closing control. In this way, the large circular knitting machine adopts automatic door opening and closing, which is more convenient and labor-saving to operate.

[0009] The door opener referred to here is an existing solution, such as a drive motor and a reduction gear box.

[0010] In a specific implementation scheme, the rocker arm assembly includes a first rocker arm, a second rocker arm and a fixed seat; the starting end of the first rocker arm is connected to the output end of the door opener, the fixed seat is fixedly arranged on the inner wall of the safety door, the starting end of the second rocker arm is hinged to the end of the first rocker arm, and the end of the second rocker arm is hinged to the fixed seat. During the operation of the door opener, the first rocker arm is first driven to swing along its starting end, and the end of the first rocker arm pulls or pushes the second rocker arm outward. During this process, the starting end and the end of the second rocker arm rotate relative to the first rocker arm and the fixed seat, and then under the traction or push of the second rocker arm, the safety door rotates relative to the machine foot to achieve closing or opening.

[0011] In a further embodiment, a proximity switch for controlling the opening angle of the safety door is provided on the door opener, the machine foot or the safety door; the running stroke of the rocker assembly passes through the detection direction of the proximity switch, and when the proximity switch detects the rocker assembly, the door opener is controlled to stop. A proximity switch is also provided in the scheme here, and the proximity switch is used to detect the position of the rocker assembly, which can be the position of the first rocker arm or the second rocker arm; during the door opening process, when the proximity switch detects the rocker assembly, the door opener is controlled to stop, and the safety door is in a fully open state.

[0012] Preferably, an adjustment mounting plate is installed on the door opener, and the proximity switch is installed on the adjustment mounting plate, so that the installation position of the proximity switch can be adjusted based on the adjustment mounting plate.

[0013] In a specific solution, a transverse adjustment notch is provided on one end of the adjustment mounting plate, and a screw fixing component passes through the transverse adjustment notch to fix the adjustment mounting plate on the door opener; based on the transverse adjustment notch, the adjustment mounting plate can be adjusted transversely relative to the door opener. A longitudinal adjustment notch is provided on the other end of the adjustment mounting plate, and the proximity switch is fixed to the adjustment mounting plate through the screw fixing component passing through the longitudinal adjustment notch. Based on the longitudinal adjustment notch, the proximity switch can be adjusted longitudinally relative to the adjustment mounting plate, so that the proximity switch can be moved left and right and up and down to ensure that the proximity switch is in the best position.

[0014] Preferably, the lower end of the safety door is provided with a lower positioning cylinder, the output shaft of which can extend out of the lower edge of the safety door and be positioned in the socket on the ground; and the upper end of the safety door is provided with an upper positioning cylinder, the output shaft of which can extend out of the upper edge of the safety door and be positioned in the socket on the frame; the safety door is positioned in an open state based on the lower positioning cylinder and the upper positioning cylinder. In the scheme here, the upper positioning cylinder and the lower positioning cylinder can be used separately or simultaneously. The upper positioning cylinder and the lower positioning cylinder are responsible for positioning and fixing the door after the safety door is closed or opened. The lower positioning cylinder is plugged into the ground, and the upper positioning cylinder is in contact with the frame. The size of the cylinder force can be adjusted by general air pressure to ensure that there is enough force to prevent the safety door from deflecting and displacing.

[0015] Preferably, the lower positioning cylinder and the upper positioning cylinder are both arranged on the inner wall of the safety door, and the air pipes of the lower positioning cylinder and the upper positioning cylinder are both attached to the inner wall of the safety door. In this solution, the connecting air pipes of the cylinders are in close contact with the inner wall of the safety door, so that the air pipes will not be broken or damaged during movement.

[0016] In a specific implementation scheme, the frame is provided with two safety doors, and the two safety doors are respectively hinged on the machine feet on both sides of the channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic structural diagram of a circular knitting machine.

[0018] Figure 2 Schematic diagram of the safety door drive on a circular knitting machine.

[0019] Figure 3 This is an exploded view of the safety door drive structure on a circular knitting machine.

[0020] Figure 4 Schematic diagram of the air pipe layout on the safety door.

[0021] Figure 5 This is a schematic diagram of the positioning of the upper positioning cylinder. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] like Figures 1 to 5As shown, the present embodiment relates to a circular knitting machine, comprising a frame 1, wherein the frame 1 is provided with a passage 10 for taking out cloth. The frame 1 is provided with a safety door 2 covering the passage 10, and the safety door 2 is hinged on a machine foot 11 on the side of the passage 10. In a specific implementation scheme, the frame 1 is provided with two safety doors 2, and the two safety doors 2 are respectively hinged on the machine feet 11 on both sides of the side of the passage 10. In a specific scheme, a door opener 3 is fixedly connected to the machine foot 11, and the door opener 3 referred to here is an existing scheme, such as a drive motor and a reduction gear box. A rocker assembly is connected to the output end of the door opener 3, and the end of the rocker assembly is connected to the safety door 2.

[0028] The safety door 2 in the circular knitting machine is hinged on the machine foot 11, and is used to open and close the passage 10 for taking out the cloth. In the past, the circular knitting machine required manual door opening, but in this solution, a door opener 3 is provided on the machine foot 11, and the door opener 3 is connected to the safety door 2 through a rocker assembly. When opening and closing the safety door 2, the door opener 3 operates, and the door opener 3 drives the safety door 2 to rotate along its hinged end relative to the machine foot 11 through the rocker assembly to achieve opening and closing control. In this way, the circular knitting machine adopts automatic door opening and closing, which is more convenient and labor-saving to operate.

[0029] like Figure 2 and 3 As shown, the rocker arm assembly includes a first rocker arm 41, a second rocker arm 42 and a fixed seat 43. The starting end of the first rocker arm 41 is connected to the output end of the door opener 3, the fixed seat 43 is fixedly arranged on the inner wall surface of the safety door 2, the starting end of the second rocker arm 42 is hinged to the end of the first rocker arm 41, and the end of the second rocker arm 42 is hinged to the fixed seat 43. During the operation of the door opener 3, the first rocker arm 41 is first driven to swing along its starting end, and the end of the first rocker arm 41 pulls or pushes the second rocker arm 42 outward. During this process, the starting end and the end of the second rocker arm 42 rotate relative to the first rocker arm 41 and the fixed seat 43, and then under the traction or push of the second rocker arm 42, the safety door 2 rotates relative to the machine foot 11 to achieve closing or opening.

[0030] Figure 2 and 3 In the further embodiment shown, a proximity switch 5 for controlling the opening angle of the safety door 2 is provided on the door opener 3, the machine foot 11 or the safety door 2. The running stroke of the rocker arm assembly passes through the detection direction of the proximity switch 5. When the proximity switch 5 detects the rocker arm assembly, the door opener 3 is controlled to stop. A proximity switch 5 is also provided in the scheme here. The proximity switch 5 is used to detect the position of the rocker arm assembly, which can be the position of the first rocker arm 41 or the second rocker arm 42. During the door opening process, when the proximity switch 5 detects the rocker arm assembly, the door opener 3 is controlled to stop, and the safety door 2 is in a fully open state.

[0031] Figure 3 In the embodiment, an adjustment mounting plate is installed on the door opener 3, and the proximity switch 5 is installed on the adjustment mounting plate 51. In this way, the installation position of the proximity switch 5 can be adjusted based on the adjustment mounting plate. In a specific scheme, a transverse adjustment notch 511 is provided on one end of the adjustment mounting plate, and a screw-fixing component passes through the transverse adjustment notch 511 to fix the adjustment mounting plate on the door opener 3. Based on the transverse adjustment notch 511, the transverse adjustment of the adjustment mounting plate relative to the door opener 3 can be achieved. A longitudinal adjustment notch 512 is provided on the other end of the adjustment mounting plate, and the proximity switch 5 is fixedly connected to the adjustment mounting plate 51 by passing through the longitudinal adjustment notch 512 through the screw-fixing component. Based on the longitudinal adjustment notch 512, the longitudinal adjustment of the proximity switch 5 relative to the adjustment mounting plate can be achieved, so that the proximity switch 5 can be moved left and right and up and down to ensure that the proximity switch 5 is in the best position.

[0032] In addition, the lower end of the safety door 2 is provided with a lower positioning cylinder 61, the output shaft of which can extend out of the lower edge of the safety door 2 and be positioned in the socket on the ground, and the upper end of the safety door 2 is provided with an upper positioning cylinder 62, the output shaft of which can extend out of the upper edge of the safety door 2 and be positioned in the socket of the frame 1. The safety door 2 is positioned in the open state based on the lower positioning cylinder 61 and the upper positioning cylinder 62. In the scheme here, the upper positioning cylinder 62 and the lower positioning cylinder 61 can be used separately or simultaneously. The upper positioning cylinder 62 and the lower positioning cylinder 61 are responsible for positioning and fixing the door after the safety door 2 is closed or opened, and the lower positioning cylinder 61 is plugged into the ground for positioning in the open state. The upper positioning cylinder 62 is plugged into the frame 1 for plugging and positioning in the closed state. The size of the cylinder force of the upper positioning cylinder 62 and the lower positioning cylinder 61 can be adjusted by general air pressure to ensure that there is enough force to prevent the safety door 2 from deflection and displacement. The lower positioning cylinder 61 and the upper positioning cylinder 62 are both arranged on the inner wall of the safety door 2, and the air pipes 63 of the lower positioning cylinder 61 and the upper positioning cylinder 62 are both attached to the inner wall of the safety door 2. In this solution, the connecting air pipes 63 of the cylinders are in close contact with the inner wall of the safety door 2, so that the air pipes 63 will not be broken or damaged during the movement.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A circular knitting machine, comprising a frame (1), the frame (1) being provided with a passage (10) for taking out cloth; the frame (1) being provided with a safety door (2) covering the passage (10), the safety door (2) being hinged to a machine foot (11) on a side of the passage (10); characterized in that: A door opener (3) is fixedly connected to the machine foot (11), a rocker arm assembly is connected to the output end of the door opener (3), and an end of the rocker arm assembly is connected to the safety door (2).

2. A circular knitting machine according to claim 1, characterized in that: The rocker arm assembly comprises a first rocker arm (41), a second rocker arm (42) and a fixing seat (43); the starting end of the first rocker arm (41) is connected to the output end of the door opener (3), the fixing seat (43) is fixedly arranged on the inner wall surface of the safety door (2), the starting end of the second rocker arm (42) is hinged to the end of the first rocker arm (41), and the end of the second rocker arm (42) is hinged to the fixing seat (43).

3. The circular knitting machine according to claim 1, characterized in that: A proximity switch (5) for controlling the opening angle of the safety door (2) is provided on the door opener (3), the machine foot (11) or the safety door (2); the operating stroke of the rocker arm assembly passes through the detection direction of the proximity switch (5), and when the proximity switch (5) detects the rocker arm assembly, the door opener (3) is controlled to stop.

4. A circular knitting machine according to claim 3, characterized in that: An adjustment mounting plate is mounted on the door opener (3), and a proximity switch (5) is mounted on the adjustment mounting plate (51).

5. A circular knitting machine according to claim 4, characterized in that: A transverse adjustment notch (511) is provided on one end of the adjustment mounting plate, and a screw-fixing component passes through the transverse adjustment notch (511) to fix the adjustment mounting plate on the door opener (3); a longitudinal adjustment notch (512) is provided on the other end of the adjustment mounting plate, and the proximity switch (5) is fixedly connected to the adjustment mounting plate (51) by passing the screw-fixing component through the longitudinal adjustment notch (512).

6. The circular knitting machine according to claim 1, characterized in that: The lower end of the safety door (2) is provided with a lower positioning cylinder (61), the output shaft of which can extend out of the lower edge of the safety door (2) and be positioned in a socket on the ground; and the upper end of the safety door (2) is provided with an upper positioning cylinder (62), the output shaft of which can extend out of the upper edge of the safety door (2) and be positioned in a socket on the frame (1); the safety door (2) is positioned in an open state and a closed state based on the lower positioning cylinder (61) and the upper positioning cylinder (62).

7. A circular knitting machine according to claim 6, characterized in that: The lower positioning cylinder (61) and the upper positioning cylinder (62) are both arranged on the inner wall of the safety door (2), and the air pipes (63) of the lower positioning cylinder (61) and the upper positioning cylinder (62) are both attached to the inner wall of the safety door (2).

8. A circular knitting machine according to any one of claims 1 to 7, characterized in that: The frame (1) is provided with two safety doors (2), and the two safety doors (2) are respectively hinged on machine feet (11) on both sides of the channel (10).

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