A mechanical knife

Abstract

The invention discloses a mechanical knife, which relates to the technical field of material cutting, comprising a movable shell, wherein a plurality of punching assemblies are arranged on the movable shell, a first lead screw for driving the movable shell to move along the height direction of the movable shell is connected to the outside of the movable shell, the first lead screw is threadedly connected to the movable shell, the punching assembly comprises a punching knife, a rotating assembly for driving the punching knife to rotate is arranged in the movable shell, the punching assembly comprises a rotating shaft rotatably connected to the movable shell, a second pulley or a third pulley is fixedly connected to one end of the rotating shaft, a punching knife is fixedly connected to the other end of the rotating shaft, and a first retaining spring is installed on the rotating shaft; the invention can directly switch between different knives through a connector, and different processing techniques such as cutting or shearing other than punching can be realized without replacing the entire equipment, and a transmission belt can also be propped up and used as a belt roller to support the belt when a certain pulley does not need to rotate.

Description

Technical Field

[0001] The invention relates to the technical field of material cutting, in particular to a mechanical knife. Background Art

[0002] Cutting and punching clothes is an important part of ensuring the quality of clothes. However, manual cutting cannot guarantee 100% stable cutting quality, nor can it meet the needs of industrialized production of clothes. Therefore, using mechanical equipment to punch and cut clothes is one of the common automated processing methods.

[0003] At present, cutting tables have been widely used in the garment industry. Workers lay cloth pieces flat on the cutting table and punch and cut the cloth pieces by entering programs into the computer. When punching holes, traditional cutting tables mostly rely solely on the drive device to drive the punching knife to fall. Holes of different types and directions need to be made by frequently replacing the knife head and aligning the knife. When performing different processing, it is necessary to disassemble the tool to achieve a change in effect. Summary of the invention

[0004] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the present invention is to provide a mechanical knife that can directly choose to punch or cut without replacing the knife head, and when performing internal maintenance, the position of the belt can be fixed to ensure convenient installation.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A mechanical knife comprises a movable shell, on which a plurality of punching assemblies are arranged, a first lead screw for driving the movable shell to move along the height direction of the movable shell is connected to the outside of the movable shell, the first lead screw is threadedly connected to the movable shell, the punching assembly comprises a punching knife, and a rotating assembly for driving the punching knife to rotate is arranged inside the movable shell.

[0007] Furthermore, the punching assembly includes a rotating shaft rotatably connected to the movable housing, one end of the rotating shaft is fixedly connected to the second pulley or the third pulley, the other end of the rotating shaft is fixedly connected to the punching knife, and a first retaining spring is installed on the rotating shaft.

[0008] Furthermore, one end of a compression spring is fixedly connected to the lower portion of the first clamping spring, and the other end of the compression spring is fixedly connected to a fixing member, and the fixing member is provided with a hole for the punching knife to pass through.

[0009] Furthermore, a lifting rod connected to the rotating shaft via a connecting ring is provided in the movable housing.

[0010] Furthermore, a connector for installing a tool is rotatably connected in the movable housing, a clamping ring for clamping the connector is provided on the movable housing, and a second clamping spring for clamping is provided on the connector.

[0011] Furthermore, a spare tool is installed in the movable housing.

[0012] Furthermore, the rotating assembly includes a first pulley fixedly connected to the connector, a first motor is installed above the movable shell, a fourth pulley is connected to the lower part of the first motor, and the first pulley, the second pulley, the third pulley and the fourth pulley are connected by a transmission belt.

[0013] Furthermore, a support assembly is slidably connected in the movable shell along the height direction of the movable shell, and the support assembly includes an extension column abutting against the bottom of the transmission belt, a fixing frame is installed at the lower part of the extension column, and the fixing frame is threadedly connected to the second lead screw in the movable shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] First, the present invention can directly switch different cutting tools through the connector without replacing the entire device, and can realize different processing techniques such as cutting or trimming except punching, and the device is provided with a fixing part for clamping, which can prevent the clothes from moving.

[0016] Second, the present invention can prop up the transmission belt when the tool needs to be replaced or the interior needs to be maintained, and can also be used as a belt roller to support the belt when a certain pulley does not need to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is an enlarged schematic diagram of a local structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0020] Figure 4 It is a side view structural schematic diagram of the present invention;

[0021] Figure 5 It is a schematic diagram of the internal structure of the present invention;

[0022] In the figure: 1, punching assembly; 2, punching tool; 3, fixing piece; 4, first retaining spring; 5, punching tool lifting rod; 6, bolt; 7, pressing spring; 8, fixing retaining spring; 9, first motor; 10, first pulley; 11, transmission belt; 111, second pulley; 112, third pulley; 12, second motor; 13, lifting rod; 14, moving housing; 15, first lead screw; 16, moving block; 17, fourth pulley; 18, connector; 19, clamping ring; 20, first washer; 21, rotating shaft; 22, punching tool; 23, connecting spring; 24, pressure block; 25, third washer; 26, fourth washer; 27, rotating shaft; 28, spare tool; 29, rotating assembly; 30, second retaining spring; 41, second lead screw; 42, connecting sleeve; 43, fixing frame; 44, extension column; 45, supporting assembly. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1

[0025] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 This embodiment provides a mechanical knife, including a movable shell 14, on which a plurality of punching assemblies 1 are provided, and the outside of the movable shell 14 is connected to a first lead screw 15 for driving the movable shell 14 to move along the height direction of the movable shell 14, and the first lead screw 15 is threadedly connected to the movable shell 14.

[0026] The first lead screw 15 can drive the movable housing 14 to move up and down to control the drilling height of the punching knife 2 and prevent the cloth from being scratched and damaged by the punching knife 2 during the feeding process.

[0027] The punching assembly 1 includes a rotating shaft 21 rotatably connected to the movable housing 14 , one end of the rotating shaft 21 is fixedly connected to the second pulley 111 or the third pulley 112 , the other end of the rotating shaft 21 is fixedly connected to the punching knife 2 , and a first retaining spring 4 is installed on the rotating shaft 21 .

[0028] The first clamping spring 4 can prevent the rotating shaft 21 from axial movement, making the transmission of the rotating shaft 21 more stable.

[0029] One end of a pressing spring 7 is fixedly connected to the lower portion of the first clamping spring 4 , and the other end of the pressing spring 7 is fixedly connected to a fixing member 3 . The fixing member 3 is provided with a hole for the punching knife 2 to pass through.

[0030] By pressing the spring 7 and the fixing member 3, when the cloth is fed under the punching knife 2, the position where the holes need to be punched can be separately divided, thereby achieving more accurate punching.

[0031] The movable housing 14 is provided with a lifting rod 13 connected to the rotating shaft 21 via a connecting ring 4 - 1 .

[0032] The height of the punching blade assembly 1 can be manually raised by the lifting rod 13, and manual control can be achieved when the automatic operation is not precise enough.

[0033] A connector 18 for installing a tool is rotatably connected in the movable housing 14 . A clamping ring 19 for clamping the connector 18 is provided on the movable housing 14 . A second clamping spring 30 for clamping is provided on the connector 18 .

[0034] A spare tool 28 is installed in the moving housing 14 .

[0035] Through the connector 18, other types of tools can be installed upward, avoiding the need to replace the entire device when the tool needs to be switched.

[0036] The punching assembly 1 includes a punching knife 2 , and a rotating assembly 29 for driving the punching knife 2 to rotate is disposed in the movable housing 14 .

[0037] The rotating assembly 29 includes a first pulley 10 fixedly connected to the connector 18, a first motor 9 is installed above the movable housing 14, a fourth pulley 17 is connected to the lower part of the first motor 9, and the first pulley 10, the second pulley 111, the third pulley 112 and the fourth pulley 17 are connected by a transmission belt 11.

[0038] Through the rotation of the first motor 9, the transmission belt 11 drives all the pulleys to rotate.

[0039] Embodiment 2

[0040] See also Figure 3 This embodiment provides a mechanical knife, including a support assembly 45 slidably connected to the movable housing 14 along the height direction of the movable housing 14, the support assembly 45 includes an extension column 44 abutting against the bottom of the transmission belt 11, and a fixing frame 43 is installed at the lower part of the extension column 44, and the fixing frame 43 is threadedly connected to the second lead screw 41 in the movable housing 14.

[0041] The extension columns 44 are rotatably connected to the fixing frame 43. When performing internal maintenance, one pulley can be removed by inserting the extension column 44 into the groove of the transmission belt 11. The transmission belt 11 does not need to be replaced and rotation can be achieved.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A mechanical knife, comprising a movable housing (14), characterized in that: The movable housing (14) is provided with a plurality of punching assemblies (1); the movable housing (14) is externally connected to a first lead screw (15) for driving the movable housing (14) to move along a height direction of the movable housing (14); the first lead screw (15) is threadedly connected to the movable housing (14); the punching assembly (1) comprises a punching knife (2); and the movable housing (14) is provided with a rotating assembly (29) for driving the punching knife (2) to rotate; A transmission belt (11) is mounted on the rotating assembly (29); a support assembly (45) is slidably connected in the movable housing (14) along the height direction of the movable housing (14); the support assembly (45) comprises an extension column (44) abutting against the bottom of the transmission belt (11); a groove for abutting against the extension column (44) is provided in the transmission belt (11); a fixing frame (43) is mounted at the bottom of the extension column (44); and the fixing frame (43) is threadedly connected to a second lead screw (41) in the movable housing (14).

2. A mechanical knife according to claim 1, characterized in that: The punching assembly (1) comprises a rotating shaft (21) rotatably connected to the movable housing (14); one end of the rotating shaft (21) is fixedly connected to the second pulley (111) or the third pulley (112); the other end of the rotating shaft (21) is fixedly connected to the punching knife (2); and a first retaining spring (4) is mounted on the rotating shaft (21).

3. A mechanical knife according to claim 2, characterized in that: One end of a pressing spring (7) is fixedly connected to the lower part of the first clamping spring (4), and the other end of the pressing spring (7) is fixedly connected to a fixing member (3), wherein the fixing member (3) is provided with a hole for the punching knife (2) to pass through.

4. A mechanical knife according to claim 2, characterized in that: A lifting rod (13) connected to the rotating shaft (21) via a connecting ring (4-1) is provided in the movable housing (14).

5. A mechanical knife according to claim 1, characterized in that: A connector (18) for mounting a tool is rotatably connected in the movable housing (14), a clamping ring (19) for clamping the connector (18) is provided on the movable housing (14), and a second clamping spring (30) for clamping is provided on the connector (18).

6. A mechanical knife according to claim 1, characterized in that: A spare tool (28) is installed in the movable housing (14).

7. A mechanical knife according to claim 5, characterized in that: The rotating assembly (29) comprises a first pulley (10) fixedly connected to the connector (18); a first motor (9) is mounted above the movable housing (14); a fourth pulley (17) is connected to the lower part of the first motor (9); and the first pulley (10), the second pulley (111), the third pulley (112) and the fourth pulley (17) are connected via the transmission belt (11).

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