Mop wheel device and flat bed sewing machine

Abstract

The utility model provides a kind of cloth wheel device and lockstitch machine, cloth wheel device includes speed change mechanism and cloth wheel component, wherein speed change mechanism input end is connected with flat car main shaft, output end is connected to cloth wheel by transmission shaft, cloth wheel is swingably set on cloth wheel support, and cloth wheel support is then connected and fixed on presser foot support.The utility model cloth wheel device, by setting cloth wheel auxiliary tow cloth, can solve the problem of upper layer fabric operation delay caused by presser foot pressure;Wherein by setting speed change mechanism connection flat car main shaft, utilize the power of flat car itself to drive cloth wheel operation, without additional setting power mechanism and related power supply layout.

Description

Technical Field

[0001] This utility model belongs to the field of sewing machine technology, specifically relating to a drag wheel device and a flat sewing machine. Background Technology

[0002] When using an industrial computerized flatbed sewing machine, due to human error or the type of sewing material (such as thin, slippery, or sticky fabric), issues such as fabric wrinkles, tight stitching, and inconsistent fabric movement between the upper and lower layers may occur. The root cause is that the presser foot of the computerized flatbed sewing machine applies pressure that hinders the fabric's movement, resulting in a delay in the movement of the upper layer of fabric, leading to "fabric overfeeding" or "fabric rushing."

[0003] To address the aforementioned issues, workers are required to manually pull the fabric while the flatbed cart is in operation, which demands high levels of skill from the workers and is inconvenient to operate. Currently, flatbed carts with built-in fabric-pulling wheels or fabric-pulling devices for flatbed carts have been developed on the market. However, these products are either directly integrated into the flatbed cart, making it difficult to solve the problems of existing flatbed cart equipment and requiring a complete replacement, placing a significant financial burden on enterprises; or they require separate motors and electrical control equipment to control the fabric-pulling wheels, resulting in high parts costs and significant modification difficulties. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a drag wheel device and a flat sewing machine to solve the problem of adding drag wheels to old flat sewing machines.

[0005] This utility model achieves the above-mentioned technical objectives through the following technical means.

[0006] A mop roller device, comprising:

[0007] The speed change mechanism has an input shaft at the input end and an output end connected to the transmission shaft.

[0008] A mop roller assembly includes a mop roller and a mop roller bracket, wherein the mop roller is pivotally connected to the mop roller bracket;

[0009] The drive shaft connects the speed change mechanism to the drag wheel.

[0010] Furthermore, the input shaft is used to connect to the flatcar spindle.

[0011] Furthermore, the mop wheel bracket is used to connect the presser foot bracket.

[0012] Furthermore, a swing arm is connected to the mop wheel bracket, and the end of the swing arm is connected to a wheel axle through a bearing. One end of the wheel axle is equipped with the mop wheel, and the other end is connected to the drive shaft through a coupling.

[0013] Furthermore, a spring is connected between the swing arm and the mop wheel bracket to keep the mop wheel in a downward or upward posture.

[0014] Furthermore, the drive shaft is a flexible shaft.

[0015] Furthermore, the outer side of the drive shaft is covered with a bellows.

[0016] Furthermore, a rubber layer is provided on the surface of the mop wheel.

[0017] Furthermore, the corrugated pipe is provided with one or more magnetic clasps.

[0018] Furthermore, the output terminal is perpendicular to one side of the input shaft axis.

[0019] A flat sewing machine: equipped with the above-mentioned drag wheel device.

[0020] The beneficial effects of this utility model are as follows:

[0021] (1) This utility model provides a drag wheel device and a flat sewing machine. By setting drag wheels to assist in dragging the fabric, the problem of delay in the operation of the upper fabric caused by the pressure of the presser foot can be solved. In this case, by setting a speed change mechanism to connect the main shaft of the flat car, the drag wheel is driven by the power of the flat car itself, without the need for additional power mechanism and related power supply.

[0022] (2) The installation method of the drag wheel device in this utility model only requires setting a speed change mechanism to connect the main shaft of the flatcar and setting a drag wheel assembly to connect and fix the pressure foot bracket. The overall installation and operation is simple and can be applied to the modification of various types of old flatcars.

[0023] (3) In this utility model, the transmission shaft is a flexible shaft that can be bent freely and has strong layout flexibility. At the same time, it is used in conjunction with magnetic buckles for auxiliary constraint positioning to avoid interference with surrounding components. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the mop wheel device of this utility model;

[0025] Figure 2 A schematic diagram of a flat sewing machine equipped with the drag wheel device of this utility model;

[0026] Figure 3 This is a schematic diagram of the mop wheel in the downward pressing state of this utility model;

[0027] Figure 4 This is a schematic diagram of the mop wheel of this utility model in the raised state.

[0028] Figure label:

[0029] 1-Speed ​​change mechanism; 11-Input shaft; 2-Drive shaft; 21-Magnetic latch;

[0030] 3-Mount roller assembly; 31-Mount roller; 32-Axle; 33-Coupling;

[0031] 34-Bearing; 35-Swing arm; 36-Swing shaft; 37-Motor roller bracket;

[0032] 38 - Spring; 4 - Flatbed sewing machine; 41 - Flatbed sewing machine spindle; 42 - Presser foot;

[0033] 43 - Presser foot bracket; 44 - Bolt. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein similar or identical reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0035] like Figure 1 The mop wheel device shown includes a speed change mechanism 1 and a mop wheel assembly 3, which are connected by a drive shaft 2, wherein:

[0036] The transmission mechanism 1 has an internal gear transmission assembly and an external input end and an output end. The input end is the input shaft 11, and the output end is connected to the drive shaft 2, with the output end perpendicular to the axis of the input shaft 11. An external power mechanism is connected to the input shaft 11 to input the rotational speed. The rotational speed is then reduced (decreased) by the gear transmission assembly and output by the drive shaft 2.

[0037] The mop roller assembly 3 includes a mop roller bracket 37, on which a swing arm 35 is connected and equipped with a limit block to limit the swing range of the swing arm 35; one end of the swing arm 35 is connected to the mop roller bracket 37 via a swing shaft 36, and the other end is connected to a wheel axle 32 via a bearing 34; one end of the wheel axle 32 is provided with a mop roller 31, and the other end is connected to a drive shaft 2 via a coupling 33; a rubber layer is provided on the surface of the mop roller 31 to prevent slippage on the cloth.

[0038] A spring 38, specifically a tension spring, connects the swing arm 35 to the mop wheel bracket 37. The tension of the spring 38 is perpendicular to the axis of the swing shaft 36, and is used to apply tension to the swing arm 35. When the swing arm 35 is at the two ends of its swing range, the tension of the spring 38 is minimal, and as the swing arm 35 swings from both ends to the middle position, the tension of the spring 38 gradually increases; thereby causing the swing arm 35 (and the mop wheel 31 on it) to swing closer to the two ends of the swing range.

[0039] The drive shaft 2 is a flexible shaft, and its outer side is covered with a stainless steel corrugated tube for protection. The corrugated tube is fitted with a magnetic buckle 21.

[0040] like Figure 2 As shown, during use, the speed-changing mechanism 1 is installed at the rear end of the flatbed sewing machine 4, and the input shaft 11 between the two is connected to the main shaft 41 of the flatbed sewing machine. The cloth roller assembly 3 is installed at the front presser foot 42 of the flatbed sewing machine 4, wherein the cloth roller bracket 37 and the presser foot bracket 43 are connected and fixed by bolts 44. During operation, the rotational power of the flatbed sewing machine 4 itself is used to drive the cloth roller 31 to rotate after being reduced to the required speed by the speed-changing mechanism 1. The flexible drive shaft 2 can be bent freely, which is convenient for arrangement in different scenarios; and according to the actual situation, it can be attached to the worktable or body of the flatbed sewing machine 4 using magnetic buckles 21 to assist in binding and fixing the excessively long drive shaft 2.

[0041] like Figure 3 and Figure 4 As shown, the mop wheel 31 can be pressed down by swinging the swing arm 35 downward or lifted up; and under the auxiliary pulling force of the spring 38, the mop wheel 31 can be kept in a downward or upward posture.

[0042] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0043] This utility model is not limited to the above-described embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of this utility model shall fall within the protection scope of this utility model.

Claims

1. A mop roller device, characterized in that: include: The speed change mechanism (1) has an input shaft (11) at the input end and an output end connected to the transmission shaft (2); The mop wheel assembly (3) includes a mop wheel (31) and a mop wheel bracket (37), wherein the mop wheel (31) is oscillatingly connected to the mop wheel bracket (37); The drive shaft (2) connects the speed change mechanism (1) and the drag wheel (31).

2. The mop roller device according to claim 1, characterized in that: The input shaft (11) is used to connect to the flatcar spindle.

3. The mop roller device according to claim 1, characterized in that: The mop wheel bracket (37) is used to connect the presser foot bracket.

4. The mop roller device according to claim 1, characterized in that: The mop wheel bracket (37) is connected to a swing arm (35), and the end of the swing arm (35) is connected to a wheel axle (32) through a bearing (34). One end of the wheel axle (32) is provided with the mop wheel (31), and the other end is connected to the drive shaft (2) through a coupling (33).

5. The mop roller device according to claim 4, characterized in that: A spring (38) is connected between the swing arm (35) and the mop wheel bracket (37) to keep the mop wheel (31) in a downward or upward posture.

6. The mop roller device according to claim 1, characterized in that: The drive shaft (2) is a flexible shaft, and the outside of the drive shaft (2) is covered with a bellows.

7. The mop roller device according to claim 1, characterized in that: The mop wheel (31) has a ring of rubber on its surface.

8. The mop roller device according to claim 6, characterized in that: One or more magnetic buckles (21) are provided on the outside of the corrugated pipe.

9. The mop roller device according to claim 1, characterized in that: The output end is perpendicular to one side of the input shaft (11) axis.

10. A flat sewing machine, characterized in that: The device includes a mop wheel as described in any one of claims 1 to 9.

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