Cloth cutting device

Abstract

The utility model provides a cloth cutting device relates to cloth cutting technical field, including the casing, the inside of casing is equipped with the drive motor, the top of casing is equipped with the cloth placing table, and the one side of cloth placing table is detachably equipped with the fixed cutter, one side of drive motor is equipped with the drive shaft, and one side of drive shaft away from drive motor is equipped with the eccentric wheel, the top of casing is equipped with the transmission chamber, and the inside rotation of transmission chamber is connected with the transmission shaft, and one side of transmission shaft away from drive motor is equipped with the transmission arm, and transmission arm is connected through the linkage spare with eccentric wheel, the utility model discloses through the above -mentioned structure is equipped with, and the fixed cutter's mouth is in the same horizontal plane with the axle of transmission shaft, so the moving knife can be accurate cooperation with the fixed cutter in the swing process, and the cloth that places on cloth placing table is cut, avoids because transmission shaft axle and the fixed cutter not in the same horizontal plane, leads to the moving knife and the fixed cutter when cutting cloth and cannot fully contact influence cutting cloth effect and all stress points when cutting cloth are in the inner mouth and lead to the blade not durable.

Description

Technical Field

[0001] This utility model relates to the field of fabric cutting technology, and more specifically, to a fabric cutting device. Background Technology

[0002] The fabric cutting device with fixed and moving blades mainly consists of an upper blade (moving blade) and a lower blade (fixed blade). The reciprocating motion of the upper blade works in conjunction with the lower blade to complete the cutting. The upper blade is usually made of hard alloy to extend its service life, and the hardness difference between its blade and the lower blade can reduce wear. This device is widely used in sewing machines, automatic fabric cutting machines and other equipment for precise fabric cutting. Some designs also include a limiting mechanism or tensioning device to ensure cutting quality.

[0003] However, existing fabric cutting devices have the following problems during operation:

[0004] 1. The moving blade drive shaft and the fixed blade edge are not on the same horizontal plane, resulting in poor fabric cutting effect;

[0005] 2. The stress points are all on the inner cutting edge, which leads to a decrease in the tool's service life.

[0006] In summary, existing fabric cutting devices have the problems that the moving blade drive shaft and the fixed blade edge are not on the same horizontal plane and that the force points are all on the inner blade edge. To address this, a fabric cutting device is disclosed. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a fabric cutting device. This invention improves the fabric cutting effect by setting the axis of the drive shaft and the fixed blade edge on the same horizontal plane.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a cloth cutting device, comprising a housing, a drive motor inside the housing, a cloth placing platform on the top of the housing, and a fixed blade detachably provided on one side of the cloth placing platform;

[0009] A drive shaft is provided on one side of the drive motor, and an eccentric wheel is provided on the side of the drive shaft away from the drive motor;

[0010] The top of the housing is provided with a transmission chamber, and a transmission shaft is rotatably connected inside the transmission chamber. A transmission arm is provided on the side of the transmission shaft away from the drive motor, and the transmission arm is connected to the eccentric wheel through a linkage component.

[0011] The drive shaft is provided with a swing arm on the side near the drive motor. One end of the swing arm is detachably provided with a moving blade. The axis of the drive shaft and the cutting edge of the fixed blade are on the same horizontal plane. The linkage is provided with a collar on the side near the eccentric wheel. The collar is sleeved around the eccentric wheel, and a bearing is provided between the collar and the eccentric wheel. The linkage is provided with a connecting ring on the side near the drive arm, and the connecting ring is connected to the drive arm.

[0012] Preferably, the outer wall of the housing has a plurality of heat dissipation holes.

[0013] Preferably, a perforated plate is provided on one side of the fabric placement table, and a negative pressure connecting pipe is installed on the side of the perforated plate away from the fabric placement table. The negative pressure connecting pipe is used to connect to an external negative pressure device.

[0014] Preferably, a limit stop is fitted on the side of the through-hole plate away from the transmission chamber.

[0015] Preferably, a pressing device is installed on the top of the transmission chamber near the fabric placement table, and a pressing head is provided at the end of the pressing device near the fixed knife, with the pressing head located directly above the fixed knife.

[0016] Preferably, the swing arm is provided with a mounting plate near the fixed blade, the mounting plate is equipped with a biting block, and the biting block is fixed to the mounting plate by bolts. A horizontal plate is fixed to the outer wall of the biting block, and the horizontal plate is used to assemble the moving blade.

[0017] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0018] This invention provides a fabric cutting device where the axis of the drive shaft and the blade edge of the fixed blade are on the same horizontal plane. Therefore, the moving blade can precisely cooperate with the fixed blade during its swing to cut the fabric placed on the fabric table. This avoids the problem of the drive shaft axis and the fixed blade not being on the same horizontal plane, which would prevent sufficient contact between the moving and fixed blades during cutting, affecting the cutting effect, and also prevent all the force points from being on the inner edge, leading to blade wear. Furthermore, both the fixed and moving blades are detachable, facilitating disassembly and replacement by the operator when the blades wear out or need to be replaced with different types. This effectively improves the device's maintenance convenience and operational flexibility. Simultaneously, the bearing arrangement between the collar and the eccentric wheel reduces friction between them, ensuring smooth movement of the linkage components, reducing wear, and extending the device's service life. The transmission chamber provides excellent protection for the drive shaft and other transmission components, preventing external dust and debris from entering and affecting the transmission effect, ensuring a stable and reliable fabric cutting process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the separation structure of the swing arm, the biting block, and the moving blade of this utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0024] The components are as follows: 10. Housing; 101. Fabric placement platform; 102. Heat dissipation hole; 20. Drive motor; 30. Fixed blade; 40. Drive shaft; 50. Eccentric wheel; 60. Linkage component; 601. Collar; 602. Connecting ring; 70. Transmission arm; 80. Transmission chamber; 801. Transmission shaft; 90. Swing arm; 901. Mounting plate; 100. Moving blade; 110. Through-hole plate; 1101. Negative pressure connecting pipe; 1102. Limiting block; 120. Fabric pressing component; 1201. Fabric pressing head; 130. Engaging block; 1301. Horizontal plate. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] Example 1

[0027] like Figure 1-5As shown, this utility model provides a fabric cutting device, including a housing 10, a drive motor 20 inside the housing 10, a fabric placement table 101 on the top of the housing 10, and a fixed blade 30 detachably mounted on one side of the fabric placement table 101; a drive shaft 40 is mounted on one side of the drive motor 20, and an eccentric wheel 50 is mounted on the side of the drive shaft 40 away from the drive motor 20; a transmission chamber 80 is located on the top of the housing 10, and a transmission shaft 801 is rotatably connected inside the transmission chamber 80; a transmission arm 70 is mounted on the side of the transmission shaft 801 away from the drive motor 20, and the transmission arm 70 is connected to the eccentric wheel 50. The spindle 50 is connected by a linkage 60; the drive shaft 801 is provided with a swing arm 90 on the side near the drive motor 20, and a movable blade 100 is detachably provided at one end of the swing arm 90. The axis of the drive shaft 801 and the blade edge of the fixed blade 30 are on the same horizontal plane. The linkage 60 is provided with a collar 601 on the side near the eccentric wheel 50. The collar 601 is sleeved on the periphery of the eccentric wheel 50, and a bearing is provided between the collar 601 and the eccentric wheel 50. The linkage 60 is provided with a connecting ring 602 on the side near the drive arm 70, and the connecting ring 602 is connected to the drive arm 70.

[0028] In operation, the fabric cutting device of this invention, after the drive motor 20 starts, drives the drive shaft 40 to rotate. The drive shaft 40 then drives the eccentric wheel 50 to rotate. Since the collar 601 is sleeved around the eccentric wheel 50 and connected by a bearing, the rotation of the eccentric wheel 50 causes the linkage 60 to reciprocate. The reciprocating motion of the linkage 60 is transmitted to the transmission arm 70 through the connecting ring 602, causing the transmission arm 70 to drive the transmission shaft 801 to rotate in the transmission chamber 80. The rotation of the transmission shaft 801 causes the swing arm 90 to swing. The moving blade 100 at one end of the swing arm 90 then swings in an arc around the axis of the transmission shaft 801. The axis of the transmission shaft 801 and the blade edge of the fixed blade 30 are on the same horizontal plane. Therefore, the moving blade 100 can precisely cooperate with the fixed blade 30 during the swinging process to cut the fabric placed on the fabric table 101, avoiding the damage caused by... The fact that the drive shaft 801 and the fixed blade 30 are not on the same horizontal plane causes the moving blade 100 and the fixed blade 30 to not make sufficient contact when cutting the fabric, affecting the cutting effect. Also, all the stress points during cutting are on the inner edge, causing the blade to be less durable. In addition, both the fixed blade 30 and the moving blade 100 can be disassembled. When the blades are worn or need to be replaced with different types of blades, it is convenient for operators to disassemble and replace them, which effectively improves the maintenance convenience and usage flexibility of the device. At the same time, the bearing between the collar 601 and the eccentric wheel 50 can reduce the friction between the two, ensure the smooth movement of the linkage 60, reduce the wear of the components, and extend the service life of the device. The transmission chamber 80 provides good protection for the drive shaft 801 and other transmission components, preventing external dust and debris from entering and affecting the transmission effect, and ensuring the stability and reliability of the fabric cutting process.

[0029] Furthermore, in another embodiment, the outer wall of the housing 10 is provided with a plurality of heat dissipation holes 102.

[0030] These heat dissipation holes 102 are evenly distributed on the sides and back of the housing 10, which can accelerate the dissipation of heat generated by the drive motor 20 inside the housing 10 during long-term operation, prevent the performance of components from deteriorating or malfunctioning due to excessive temperature, and thus further ensure the stability and safety of the cloth cutting device during continuous operation.

[0031] Furthermore, in another embodiment, a through-hole plate 110 is provided on one side of the cloth placement table 101, and a negative pressure connecting pipe 1101 is installed on the side of the through-hole plate 110 away from the cloth placement table 101. The negative pressure connecting pipe 1101 is used to connect to an external negative pressure device.

[0032] When the negative pressure equipment operates through the negative pressure connecting pipe 1101, a negative pressure area is formed on the surface of the perforated plate 110. Waste materials such as debris and scraps generated during the fabric cutting process are adsorbed by the negative pressure and enter the negative pressure connecting pipe 1101 through the holes on the perforated plate 110. Finally, they are transported to the designated waste collection device, which effectively prevents waste from accumulating on the fabric placement table 101 and affecting subsequent fabric cutting operations. It also keeps the working environment clean and reduces the amount of manual waste cleaning.

[0033] Furthermore, in another embodiment, a limit stop 1102 is fitted on the side of the through-hole plate 110 away from the transmission chamber 80.

[0034] The limiting block 1102 is fixedly connected to the side of the through-hole plate 110 by bolts. When the through-hole plate 110 is subjected to airflow impact or cloth friction during the negative pressure adsorption of waste, the limiting block 1102 can form a rigid contact with the inner wall of the housing 10, effectively limiting the displacement of the through-hole plate 110. This avoids the problem of uneven distribution of negative pressure area and reduced waste adsorption efficiency caused by the displacement of the through-hole plate 110. It also reduces the probability of loosening or leakage at the connection between the through-hole plate 110 and the negative pressure connecting pipe 1101, thereby extending the overall service life of the through-hole plate 110.

[0035] Furthermore, in another embodiment, a pressing component 120 is assembled on the top of the transmission chamber 80 near the side of the cloth placement table 101. The pressing component 120 is provided with a pressing head 1201 at one end near the fixed knife 30, and the pressing head 1201 is located directly above the fixed knife 30.

[0036] The pressing head 1201 and the cloth placement table 101 form a cloth guiding channel, pressing the cloth flat on the surface of the fixed knife 30 to prevent the cloth from wrinkling or shifting due to force during the cutting process. At the same time, a rubber pad can be set on the contact surface of the pressing head 1201, which not only increases the friction between the pressing head and the cloth and improves the pressing stability, but also effectively reduces the wear on the cloth surface.

[0037] Furthermore, in another embodiment, the swing arm 90 is provided with a mounting plate 901 near the fixed blade 30. The mounting plate 901 is equipped with a biting block 130, and the biting block 130 is fixed to the mounting plate 901 by bolts. A horizontal plate 1301 is fixed to the outer wall of the biting block 130, and the horizontal plate 1301 is used to assemble the moving blade 100.

[0038] The moving blade 100 is detachably connected to the horizontal plate 1301 by bolts, which facilitates quick replacement and maintenance of the moving blade 100. When the moving blade 100 is worn or the blade becomes dull, the operator does not need to disassemble the entire swing arm 90. He can simply loosen the bolts to remove the old moving blade 100 and replace it with a new one, which effectively shortens the equipment maintenance time. In addition, the biting block 130 is made of alloy material, which has good wear resistance and structural stability. It can maintain its shape under the long-term cutting impact of the moving blade 100, and avoid the moving blade 100 from shifting position due to deformation of the biting block 130, which further ensures the cutting accuracy of the cloth cutting device.

[0039] Working principle: First, the fabric to be cut is placed flat on the fabric placement table 101, with the edge of the fabric to be cut aligned with the blade of the fixed blade 30. Then, the drive motor 20 is started. The drive motor 20 drives the eccentric wheel 50 to rotate through the drive shaft 40. The rotation of the eccentric wheel 50 is converted into the reciprocating motion of the linkage 60 through the cooperation of the collar 601 and the bearing. The linkage 60 then pulls the transmission arm 70 through the connecting ring 602, so that the transmission arm 70 drives the transmission shaft 801 to rotate periodically in the transmission chamber 80. The rotation of the transmission shaft 801 synchronously drives the swing arm 90 to swing around the axis of the transmission shaft 801. The moving blade 100 at the end of the swing arm 90 moves in an arc with the swing arm 90. During the swing, the moving blade 100 precisely fits with the blade of the fixed blade 30, completing the cutting action of the fabric.

[0040] During the cutting process, the pressing head 1201 of the pressing component 120 always presses the fabric above the fixed blade 30 to prevent the fabric from shifting during cutting. At the same time, the external negative pressure device forms negative pressure on the surface of the through-hole plate 110 through the negative pressure connecting pipe 1101, which adsorbs and discharges the fabric debris generated during cutting in a timely manner, avoiding the accumulation of debris that affects the cutting effect. The limiting block 1102 fixes the through-hole plate 110 to prevent it from shifting during the negative pressure adsorption process. In addition, the detachable connection design between the moving blade 100 and the horizontal plate 1301 allows for quick disassembly and replacement when the moving blade 100 is worn, ensuring the continuous and efficient operation of the cutting work.

[0041] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0042] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fabric cutting device, comprising a housing (10), characterized in that: The housing (10) is equipped with a drive motor (20) inside, and a cloth placement platform (101) is provided on the top of the housing (10). A fixed knife (30) is detachably provided on one side of the cloth placement platform (101). A drive shaft (40) is provided on one side of the drive motor (20), and an eccentric wheel (50) is provided on the side of the drive shaft (40) away from the drive motor (20). The top of the housing (10) is provided with a transmission chamber (80), and a transmission shaft (801) is rotatably connected inside the transmission chamber (80). A transmission arm (70) is provided on the side of the transmission shaft (801) away from the drive motor (20). The transmission arm (70) is connected to the eccentric wheel (50) through a linkage (60). The drive shaft (801) is provided with a swing arm (90) on the side near the drive motor (20). One end of the swing arm (90) is detachably provided with a moving blade (100), and the axis of the drive shaft (801) and the cutting edge of the fixed blade (30) are on the same horizontal plane.

2. The fabric cutting device according to claim 1, characterized in that: The linkage (60) has a collar (601) near the eccentric wheel (50), the collar (601) is sleeved around the eccentric wheel (50), and a bearing is provided between the collar (601) and the eccentric wheel (50). The linkage (60) has a connecting ring (602) near the transmission arm (70), and the connecting ring (602) is connected to the transmission arm (70).

3. The fabric cutting device according to claim 1, characterized in that: The outer wall of the housing (10) has a number of heat dissipation holes (102).

4. The fabric cutting device according to claim 1, characterized in that: The fabric placement table (101) has a through-hole plate (110) on one side, and a negative pressure connecting pipe (1101) is installed on the side of the through-hole plate (110) away from the fabric placement table (101). The negative pressure connecting pipe (1101) is used to connect to an external negative pressure device.

5. The fabric cutting device according to claim 4, characterized in that: A limit stop (1102) is fitted on the side of the through plate (110) away from the transmission chamber (80).

6. The fabric cutting device according to claim 1, characterized in that: A pressing device (120) is mounted on the top of the transmission chamber (80) near the side of the cloth placement table (101). The pressing device (120) has a pressing head (1201) at one end near the fixed knife (30), and the pressing head (1201) is located directly above the fixed knife (30).

7. The fabric cutting device according to claim 1, characterized in that: The swing arm (90) has a mounting plate (901) at one end near the fixed blade (30).

8. The fabric cutting device according to claim 7, characterized in that: The mounting plate (901) is equipped with a biting block (130), and the biting block (130) is fixed to the mounting plate (901) by bolts.

9. The fabric cutting device according to claim 8, characterized in that: A horizontal plate (1301) is fixed to the outer wall of the bite block (130), and the horizontal plate (1301) is used to assemble the moving knife (100).

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