Four-roller cloth bucket of spreading machine

Abstract

The utility model discloses a spreading machine four-roller cloth bucket which comprises a bottom frame, a left side support and a right side support and further comprises unwinding power equipment, the left side support and the right side support are located on the left side and the right side of the bottom frame, and a first unpowered roller and a second unpowered roller are arranged on the rear side between the left side support and the right side support. A first driving roller and a second driving roller are arranged on the front side between the left bracket and the right bracket; the unwinding power equipment is in transmission connection with the first driving roller and the second driving roller; the first driving roller and the second driving roller are fixedly installed on the first driving shaft and the second driving shaft correspondingly, and the two ends of the first driving shaft and the two ends of the second driving shaft are rotationally connected with the left side support and the right side support through bearings correspondingly. According to the utility model, in the unwinding process of the cloth roll, the unwinding power equipment can always provide power to assist in unwinding.

Description

Technical Field

[0001] This utility model relates to the field of fabric spreading machines, specifically a four-roller fabric hopper for fabric spreading machines. Background Technology

[0002] In the garment-making process, fabric spreading and cutting play a crucial role. Only regular cut pieces have the opportunity to be sewn into garments that meet specifications. If the cut pieces are not regular, even the best sewing machine and the most skilled sewing worker will not be able to sew high-quality garments. Fabric spreading is the first step in garment making, and its quality determines the quality of the entire production. It is the foundation and the key, and absolutely cannot be ignored. Automated production equipment such as automatic fabric spreading machines and automatic fabric laying machines have emerged to meet this need.

[0003] For example, our company's earlier patent application, authorized by publication number CN220492577U, discloses a fabric spreading machine edge-aligning mechanism, including a base and a fabric hopper. The fabric hopper is movably mounted on top of the base and can move along the left and right direction of the base. The fabric hopper is used to load the fabric roll to be unrolled. The base is generally a rectangular frame, and two track beams are provided on the inner side of the base. A slide rail is fixedly installed on the top of the track beams, and a slider is slidably connected on the slide rail. The fabric hopper includes a bottom frame and side supports located on the left and right sides of the bottom frame. The side supports are generally inverted arch shape, and four support rollers are provided between the two side supports. The support rollers are rotatably connected to the support shaft through bearings, and the support shaft is fixedly installed on the inner side of the side supports by fixing screws.

[0004] The aforementioned patent allows for adjustment of the fabric roll's position when the fabric shifts, ensuring alignment on both sides during subsequent conveying; this reduces the need for further adjustments to the fabric's position, thus minimizing fabric strain. However, a drawback of this patent is that the fabric hopper includes four support rollers, with the fabric roll primarily resting on them. This design suffers from poor unwinding efficiency due to the lack of power in these unpowered support rollers, making it difficult to unwind heavy fabric rolls.

[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a four-roller cloth bucket for a cloth spreading machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] The four-roller fabric hopper of the fabric spreading machine includes a bottom frame and left and right supports located on the left and right sides of the bottom frame. It also includes an unwinding power device. A first unpowered roller and a second unpowered roller are arranged at the rear side between the left and right supports, and a first active roller and a second active roller are arranged at the front side between the left and right supports. The unwinding power device is driven by the first and second active rollers. The first and second active rollers are respectively fixedly mounted on a first and a second active shaft, and both ends of the first and second active shafts are rotatably connected to the left and right supports via bearings. In this design, the left ends of both the first and second active shafts pass through the left support, and the ends are respectively fixedly connected to a first driven synchronous pulley and a second driven synchronous pulley. The unwinding power device includes a power motor, and an active synchronous pulley is fixedly mounted on the output of the power motor. The active synchronous pulley, the first driven synchronous pulley, and the second driven synchronous pulley are connected by a synchronous belt drive.

[0009] Furthermore, both the left and right supports are inverted arch shapes.

[0010] Furthermore, the outer diameters of the first active roller, the first passive roller, the second active roller, and the second passive roller are all the same, φ. The axial distance between the second active roller and the second passive roller should be less than twice φ, and the distance between the first passive roller and the second passive roller should also be less than twice φ.

[0011] Furthermore, both the first and second unpowered rollers are rotatably connected to the support shaft via bearings, and the support shaft is fixedly installed between the first and second unpowered rollers.

[0012] Furthermore, the power motor is fixedly mounted on the outer front end of the bottom frame via a motor bracket.

[0013] Furthermore, the power motor is a variable frequency motor.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In the initial stage of unwinding the fabric roll, when the diameter of the fabric roll is relatively large, it can ensure that the fabric roll is in contact with the first active roller and the first passive roller. As unwinding progresses and the diameter of the fabric roll decreases, the fabric roll can also contact the second active roller and the second passive roller. This ensures that the unwinding power equipment can always provide power to assist in unwinding during the unwinding process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a four-roller cloth bucket for a cloth spreading machine.

[0017] Figure 2This is a front view of the four-roller cloth bucket of a cloth spreading machine.

[0018] Figure 3 This is a side view of the four-roller cloth bucket of a cloth spreading machine.

[0019] Figure 4 This is a top view of the four-roller cloth bucket of a cloth spreading machine.

[0020] Figure 5 for Figure 2 Sectional view along the AA direction.

[0021] Figure 6 for Figure 2 Sectional view along the BB direction. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] Please see Figures 1-6 The four-roller cloth hopper of the cloth spreading machine includes a bottom frame 1 and a left support 2 and a right support 3 located on the left and right sides of the bottom frame 1, and also includes an unwinding power device 8.

[0024] Both the left support 2 and the right support 3 are in the shape of an inverted arch.

[0025] A first unpowered roller 4 and a second unpowered roller 5 are provided on the rear side between the left support 2 and the right support 3, and a first active roller 6 and a second active roller 7 are provided on the front side between the left support 2 and the right support 3; the unwinding power device 8 is connected to the first active roller 6 and the second active roller 7.

[0026] like Figure 5 As shown, the line connecting the first active roller 6, the first passive roller 4, the second active roller 7, and the second passive roller 5 is trapezoidal in shape, and the upper base of the isosceles trapezoid is longer than the lower base. The first active roller 6 and the first passive roller 4 are located at the two ends of the upper base of the isosceles trapezoid, and the second active roller 7 and the second passive roller 5 are located at the two ends of the lower base of the isosceles trapezoid.

[0027] This configuration ensures that, in the initial stage of unwinding the fabric roll, when the diameter of the fabric roll is large, the fabric roll can be in contact with the first active roller 6 and the first unpowered roller 4. As unwinding progresses and the diameter of the fabric roll decreases, the fabric roll can also be in contact with the second active roller 7 and the second unpowered roller 5. This ensures that the unwinding power equipment 8 can always provide power to assist in unwinding during the unwinding process.

[0028] Meanwhile, in this scheme, the outer diameters of the first active roller 6, the first passive roller 4, the second active roller 7, and the second passive roller 5 are all the same, φ. The axial distance between the second active roller 7 and the second passive roller 5 should be less than twice φ, and the distance between the first passive roller 4 and the second passive roller 5 should also be less than twice φ.

[0029] The first unpowered roller 4 and the second unpowered roller 5 are both rotatably connected to the support shaft 401 via bearings, and the support shaft 401 is fixedly installed between the first unpowered roller 4 and the second unpowered roller 5.

[0030] The first active roller 6 and the second active roller 7 are respectively fixedly mounted on the first active shaft 601 and the second active shaft 701, and the two ends of the first active shaft 601 and the second active shaft 701 are rotatably connected to the left support 2 and the right support 3 respectively through bearings; in this solution, the left ends of the first active shaft 601 and the second active shaft 701 both pass through the left support 2 and the ends are respectively fixedly connected to the first driven synchronous pulley 602 and the second driven synchronous pulley 702;

[0031] The unwinding power device 8 includes a power motor 801, which is fixedly installed on the outer front end of the bottom frame 1 via a motor bracket 802. An active synchronous pulley 803 is fixedly installed on the output of the power motor 801. The active synchronous pulley 803, the first driven synchronous pulley 602, and the second driven synchronous pulley 702 are connected by a synchronous belt 804.

[0032] Therefore, in this solution, the power motor 801 is a variable frequency motor to meet the requirement of stable unwinding speed; as unwinding proceeds, the diameter of the fabric roll becomes smaller, and at this time the fabric roll needs a higher rotation speed to meet the unwinding speed requirement.

[0033] When using this invention, the fabric roll is placed on the fabric hopper. In the initial stage of unwinding, the fabric roll contacts the first active roller 6 and the first passive roller 4. At this time, the first active roller 6 drives the fabric roll to rotate to meet the unwinding requirements. As unwinding proceeds, the diameter of the fabric roll decreases, and the fabric roll can also contact the second active roller 7 and the second passive roller 5. This ensures that the unwinding power device 8 can always provide power to assist in unwinding during the unwinding process.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A four-roller cloth hopper for a cloth spreading machine, comprising a bottom frame and a left and right support located on the left and right sides of the bottom frame, characterized in that, It also includes an unwinding power device. A first unpowered roller and a second unpowered roller are arranged on the rear side between the left and right supports, and a first active roller and a second active roller are arranged on the front side between the left and right supports. The unwinding power device is driven by the first active roller and the second active roller. The first active roller and the second active roller are respectively fixedly mounted on the first active shaft and the second active shaft, and the two ends of the first active shaft and the second active shaft are respectively rotatably connected to the left and right supports through bearings. The left ends of the first active shaft and the second active shaft both pass through the left support and are respectively fixedly connected to the first driven synchronous pulley and the second driven synchronous pulley. The unwinding power device includes a power motor, and an active synchronous pulley is fixedly mounted on the output of the power motor. The active synchronous pulley, the first driven synchronous pulley and the second driven synchronous pulley are connected by a synchronous belt drive.

2. The four-roller cloth bucket of the cloth spreading machine according to claim 1, characterized in that, Both the left and right supports are inverted arch shapes.

3. The four-roller cloth bucket of the cloth spreading machine according to claim 1, characterized in that, The first active roller, the first passive roller, the second active roller, and the second passive roller all have the same outer diameter of φ. The axial distance between the second active roller and the second passive roller should be less than twice φ, and the distance between the first passive roller and the second passive roller should also be less than twice φ.

4. The four-roller cloth bucket of the cloth spreading machine according to claim 1, characterized in that, Both the first and second unpowered rollers are rotatably connected to the support shaft via bearings, and the support shaft is fixedly installed between the first and second unpowered rollers.

5. The four-roller cloth bucket of the cloth spreading machine according to claim 1, characterized in that, The power motor is fixedly installed on the outer front end of the bottom frame via a motor bracket.

6. The four-roller cloth bucket of the cloth spreading machine according to claim 1, characterized in that, The power motor is a variable frequency motor.

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