Stitch length adjusting mechanism and waistband sewing machine

Abstract

The utility model discloses a stitch length adjusting mechanism and discloses a waistband sewing machine with the stitch length adjusting mechanism, the stitch length adjusting mechanism comprises a mounting frame, a rotary driving mechanism, a lead screw and a differential sliding block seat, the lead screw is in transmission connection with the output end of the rotary driving mechanism, and a lead screw nut is arranged on the lead screw; the differential sliding block seat is connected with the mounting frame through the sliding mechanism, the screw rod nut is connected with the differential sliding block seat, the differential sliding block seat, the differential adjusting connecting rod and the differential tooth wrench are hinged in sequence, and the differential tooth wrench is used for being connected with a differential speed adjusting mechanism of the flat seaming machine. When the rotary driving mechanism works, adjustment of the differential speed adjusting mechanism is achieved in real time, the feeding speed of the feeding presser foot of the flat seaming machine is changed, the moving speed of a trouser body is accurately controlled, and then the stitch densities of all areas between the trouser body and a trouser belt and at the connecting position of the trouser body and the trouser belt are different.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing equipment, in particular to a needle distance adjustment mechanism and a trouser waistband attaching machine. Background Art

[0002] The waistband attaching machine is a device that can attach waistbands to underwear. The waistband attaching machine includes a main body and a stretch sewing machine arranged on the main body. In order to improve the comfort and fit of the underwear, the various areas of the waistband on the underwear are set to different elasticity, while the elasticity of the various areas on the waistband is the same. In order to achieve different elasticity in the various areas of the waistband, the stitch density of the various areas at the connection between the trouser body and the waistband is different. At present, the waistband attaching machine is provided with a feeding wheel on the workbench. By controlling the rotation speed of the feeding wheel, the feeding speed of the trouser body is controlled, so that the stitch density of the various areas at the connection between the trouser body and the waistband is different. However, this method drives the movement speed of the trouser body to be unstable and the movement position accuracy of the trouser body is low, so that the elasticity of the various areas of the waistband on the underwear does not meet the design requirements, reducing the comfort of the underwear. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a needle distance adjustment mechanism, which can instantly adjust the differential speed adjustment mechanism of the interlock sewing machine, and the interlock sewing machine can accurately control the moving speed of the trouser body.

[0004] The utility model also provides a trouser waistband attaching machine with the needle distance adjusting mechanism.

[0005] A stitch length adjustment mechanism according to an embodiment of the first aspect of the utility model includes a mounting frame, a rotary drive mechanism, a lead screw and a differential slider seat, wherein the mounting frame is used to be connected to a frame of a trouser waistband machine or a stretch sewing machine of the trouser waistband machine; the rotary drive mechanism is arranged on the mounting frame; the lead screw is transmission-connected to the output end of the rotary drive mechanism, and a lead screw nut is provided on the lead screw; the differential slider seat is connected to the mounting frame through a sliding mechanism, the sliding direction of the sliding mechanism is parallel to the length direction of the lead screw, the lead screw nut is connected to the differential slider seat, the differential slider seat is hinged with a differential adjustment link, the differential adjustment link is hinged with a differential tooth wrench, and the differential tooth wrench is provided with a connecting hole for connecting to the differential speed regulation mechanism of the stretch sewing machine at one end away from the differential adjustment link.

[0006] At least the following beneficial effects are provided: the rotary drive mechanism drives the lead screw to rotate, and under the guiding action of the sliding mechanism, the lead screw nut, the differential slider seat, the differential adjustment connecting rod and the differential tooth wrench move along the guiding direction of the sliding mechanism, and the differential tooth wrench is connected to the differential speed regulating mechanism of the interlock sewing machine, so when the rotary drive mechanism is working, the differential tooth wrench timely drives the differential speed regulating mechanism, and immediately realizes the adjustment of the differential speed regulating mechanism, changes the feeding speed of the feeding presser foot of the interlock sewing machine, and realizes accurate control of the moving speed of the trouser body, thereby realizing different stitch densities in various areas of the connection between the trouser body and the waistband, meeting the design requirements of different elasticity in various areas of the waistband, and improving the comfort of the underwear.

[0007] According to some embodiments of the present utility model, the rotary drive mechanism is a motor, and the output end of the motor is connected to the lead screw through a coupling.

[0008] According to some embodiments of the utility model, the sliding mechanism includes a slide rail and a slider that cooperate with each other, the slide rail is connected to the mounting frame, the slide rail and the lead screw are parallel to each other, and the slider is connected to the differential slider seat.

[0009] According to some embodiments of the utility model, the mounting frame includes a vertical plate and a horizontal plate, the vertical plate and the horizontal plate are connected to form an L-shaped structure, the vertical plate is connected to the frame or the interlock sewing machine, the sliding mechanism is connected to the vertical plate, and the rotating drive mechanism is connected to the horizontal plate.

[0010] According to some embodiments of the utility model, an in-position sensor is provided on the mounting frame, and the in-position sensor is used to detect whether the differential slider seat moves to the origin.

[0011] The trouser waistband machine according to the second aspect of the utility model comprises a needle distance adjustment mechanism according to the first aspect of the utility model, as well as a frame and a flat sewing machine, wherein the flat sewing machine is arranged on the frame, and the needle distance adjustment mechanism is connected to the frame or the flat sewing machine.

[0012] At least the following beneficial effects are achieved:

[0013] The trouser waistband attaching machine has all the beneficial effects brought by the needle distance adjustment mechanism of the above-mentioned embodiment, which will not be described again here.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0016] Figure 1 This is one of the structural schematic diagrams of a needle distance adjustment mechanism according to an embodiment of the utility model;

[0017] Figure 2 This is a second structural schematic diagram of a needle distance adjustment mechanism according to an embodiment of the utility model;

[0018] Figure Number:

[0019] Mounting frame 100, vertical plate 110, horizontal plate 120, rotation drive mechanism 200, coupling 210, lead screw 300, lead screw nut 310, differential slider seat 400, sliding mechanism 500, differential adjustment link 600, differential tooth wrench 700, connecting hole 710, and in-position sensor 800. DETAILED DESCRIPTION

[0020] 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are 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 cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] Reference Figure 1 and Figure 2 The utility model discloses a needle distance adjustment mechanism, which includes a mounting frame 100, a rotary drive mechanism 200, a lead screw 300 and a differential slider seat 400.

[0025] The mounting frame 100 is used to be connected to the frame of the trouser waistband machine or the interlock sewing machine of the trouser waistband machine; the rotary drive mechanism 200 is arranged on the mounting frame 100; the lead screw 300 is transmission-connected to the output end of the rotary drive mechanism 200, and a lead screw nut 310 is provided on the lead screw 300; the differential slider seat 400 is connected to the mounting frame 100 through a sliding mechanism 500, and the sliding direction of the sliding mechanism 500 is parallel to the length direction of the lead screw 300, and the lead screw nut 310 is connected to the differential slider seat 400, and the differential slider seat 400 is hinged with a differential adjustment link 600, and the differential adjustment link 600 is hinged with a differential tooth wrench 700, and the end of the differential tooth wrench 700 away from the differential adjustment link 600 is provided with a connecting hole 710 for connecting to the differential speed regulation mechanism of the interlock sewing machine.

[0026] The mounting frame 100 serves to support the rotary drive mechanism 200, the lead screw 300, the differential slider seat 400, the sliding mechanism 500, the differential adjustment link 600 and the differential screw wrench 700 on the frame or the interlock sewing machine. The rotary drive mechanism 200 drives the lead screw 300 to rotate. Under the guiding action of the sliding mechanism 500, the lead screw nut 310, the differential slider seat 400, the differential adjustment link 600 and the differential tooth wrench 700 move along the guiding direction of the sliding mechanism 500. The differential tooth wrench 700 is connected to the differential speed regulating mechanism of the interlock sewing machine. Therefore, when the rotary drive mechanism 200 is working, the differential tooth wrench 700 drives the differential speed regulating mechanism in time, and immediately adjusts the differential speed regulating mechanism, changes the feeding speed of the feeding foot of the interlock sewing machine, and accurately controls the moving speed of the trouser body, thereby realizing different stitch densities in various areas of the connection between the trouser body and the waistband, meeting the design requirements of different elasticity in various areas of the waistband, and improving the comfort of the underwear.

[0027] In some of the embodiments, the rotary drive mechanism 200 is a motor, and the output end of the motor is connected to the screw 300 through a coupling 210. The motor can achieve instant and precise speed control, and can adjust the feeding speed of the trouser body during the sewing process of the same underwear, thereby improving the efficiency of the waistband of the underwear.

[0028] In some of the embodiments, the sliding mechanism 500 includes a slide rail and a slider that cooperate with each other, the slide rail is connected to the mounting frame 100, the slide rail and the lead screw 300 are parallel to each other, the slider is connected to the differential slider seat 400, and the differential slider seat 400 is easily moved on the mounting frame 100 under the guidance of the slide rail. The differential slider seat 400 drives the differential adjustment link 600 to rotate, and the differential adjustment link 600 drives the differential tooth wrench 700 to rotate.

[0029] In some of the embodiments, the mounting frame 100 includes a vertical plate 110 and a horizontal plate 120, which are connected to form an L-shaped structure. The vertical plate 110 is connected to a frame or a sewing machine, the sliding mechanism 500 is connected to the vertical plate 110, and the rotating drive mechanism 200 is connected to the horizontal plate 120. The distribution of the vertical plate 110 and the horizontal plate 120 facilitates the distribution of the rotating drive mechanism 200, the sliding mechanism 500 and the lead screw 300.

[0030] In some of the embodiments, an in-position sensor 800 is provided on the mounting frame 100, and the in-position sensor 800 is used to detect whether the differential slider seat 400 has moved to the origin. The origin position is the reset point of the differential slider seat 400. Each time the waistband of a pair of underwear is completed, the differential slider seat 400 returns to the origin to prepare for the waistband of the next pair of underwear.

[0031] It can be imagined that the in-place sensor 800 is connected to the mounting block via a first fastener, and the mounting block is connected to the vertical plate 110 via a second fastener, thereby achieving the connection between the in-place sensor 800 and the mounting frame 100 .

[0032] The utility model discloses a trouser waistband sewing machine, which comprises a machine frame, a stretch sewing machine and the above-mentioned needle distance adjustment mechanism. The stretch sewing machine is arranged on the machine frame, and the needle distance adjustment mechanism is connected with the machine frame or the stretch sewing machine.

[0033] The trouser waistband attaching machine has all the beneficial effects brought by the needle distance adjustment mechanism of the above-mentioned embodiment, which will not be described again here.

[0034] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A needle distance adjustment mechanism, characterized in that: include: A mounting frame, used to be connected to a frame of a trouser waistband attaching machine or a flat sewing machine of the trouser waistband attaching machine; A rotary drive mechanism, disposed on the mounting frame; A lead screw is drivingly connected to the output end of the rotary drive mechanism, and a lead screw nut is provided on the lead screw; The differential slider seat is connected to the mounting frame via a sliding mechanism, the sliding direction of the sliding mechanism is parallel to the length direction of the lead screw, the lead screw nut is connected to the differential slider seat, the differential slider seat is hinged with a differential adjustment link, the differential adjustment link is hinged with a differential tooth wrench, and the end of the differential tooth wrench away from the differential adjustment link is provided with a connecting hole for connecting to the differential speed regulation mechanism of the interlock sewing machine.

2. The needle distance adjustment mechanism according to claim 1, characterized in that: The rotary drive mechanism is a motor, and the output end of the motor is transmission-connected to the lead screw through a coupling.

3. The needle distance adjustment mechanism according to claim 1, characterized in that: The sliding mechanism comprises a sliding rail and a sliding block which cooperate with each other, the sliding rail is connected to the mounting frame, the sliding rail and the lead screw are parallel to each other, and the sliding block is connected to the differential sliding block seat.

4. The needle distance adjustment mechanism according to claim 1, characterized in that: The mounting frame includes a vertical plate and a horizontal plate, the vertical plate and the horizontal plate are connected to form an L-shaped structure, the vertical plate is connected to the frame or the interlock sewing machine, the sliding mechanism is connected to the vertical plate, and the rotating drive mechanism is connected to the horizontal plate.

5. The needle distance adjustment mechanism according to claim 1, characterized in that: The mounting frame is provided with an in-position sensor, and the in-position sensor is used to detect whether the differential slider seat moves to the origin.

6. A trouser waistband attaching machine, characterized in that: It comprises a frame, a flat sewing machine and a needle distance adjustment mechanism according to any one of claims 1 to 5, wherein the flat sewing machine is arranged on the frame, and the needle distance adjustment mechanism is connected to the frame or the flat sewing machine.

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