Feeding mechanism with intermediate pressure core and sewing apparatus

Abstract

The utility model discloses a feeding mechanism and sewing equipment with intermediate pressure core, including bracing material mechanism, bracing material mechanism includes two bracing material spare of along X axial interval arrangement, the intermediate pressure core between two bracing material spare, X axial opening and closing drive mechanism and mounting seat, two bracing material spare is connected in X axial opening and closing drive mechanism, and two bracing material spare is driven along X axial synchronous back away from the material piece of opening and closing intermediate joint seam both sides or synchronous homewards reset by X axial opening and closing drive mechanism, and the intermediate pressure core has the material of being used for downwardly pressing workpiece and presses the department, and X axial opening and closing drive mechanism, the intermediate pressure core installs on mounting seat respectively. Its through the setting of intermediate pressure core, can press the positioning of the intermediate joint seam of workpiece, avoids the displacement phenomenon, is favorable for two bracing material spare to open and close two material piece steadily accurately, is favorable for subsequent double needle joint seam overlock, improves sewing processing quality.

Description

Technical Field

[0001] This utility model relates to the field of sewing technology, and in particular to a feeding mechanism and sewing equipment with an intermediate pressure core, which is mainly but not limited to feeding before double-needle stitching of hats. Background Technology

[0002] Reference Figure 8 and Figure 9 As shown, taking a baseball cap as an example, its crown is formed by sewing together several adjacent cap pieces A1 to create a hemispherical crown. In actual sewing, two adjacent cap pieces A1 are overlapped and sewn on one side. Then, the two cap pieces A1 are turned outwards from the center seam A2 as a reference. The presser foot needs to be placed on top of the two cap pieces A1 after they are turned out, and double needle sewing is performed on both sides of the center seam A2. During sewing, a side strip A3 is placed on the inside of the cap piece A1. The side strip covers the center seam A2 of the two cap pieces A1. The two sides of the side strip A3 form a sewing track A4 with the corresponding positions of the two cap pieces A1's center seam A2.

[0003] Currently, the common practice is to manually unfold the two single-needle sewn cap pieces and place them under the sewing machine head, where they are held down by the presser foot before double-needle sewing. This method is inefficient and makes it difficult to guarantee consistent sewing precision. Some in the industry have researched automatic cap unfolding fixtures. In use: 1. The clamping bar opens, and the two single-needle sewn fabric pieces are placed between the fixed bar and the clamping bar, which clamps the fabric pieces. 2. The spreading bar and clamping bar rotate around their axes, moving away from the fixed bar, thus spreading and tightening the fabric pieces. 3. A multi-axis motion servo mechanism drives the fixture to align the fabric pieces with the double-needle sewing machine. 4. The double-needle sewing machine is started, and the multi-axis motion servo mechanism drives the fixture to move, completing the double-needle sewing. 5. The spreading bar and clamping bar approach the fixed bar, the clamping bar opens, and the double-needle sewn fabric pieces are removed.

[0004] It is evident that this method requires manual placement of the fabric between the fixed rod and the clamping rod. During the rotational opening action, the fabric is prone to shifting, resulting in asymmetrical opening on both sides. Furthermore, when placing the fabric, it is difficult for the operator to ensure that the single-needle stitch on the fabric is perfectly aligned, affecting the quality of double-needle sewing. Additionally, the fixture is driven by a multi-axis motion servo mechanism, forming a template for machining. The fixture clamps the fabric and moves it along a specified contour curve to complete the sewing. Its structure is relatively complex, and its application in currently mature double-needle sewing machines requires modifications to the machine design, making it difficult to directly apply to existing double-needle sewing machines.

[0005] Therefore, it is necessary to research a new technical solution to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a feeding mechanism and sewing equipment with a central pressure core. By setting the central pressure core, it can press and position the middle seam of the workpiece to avoid displacement, which is conducive to the two supporting parts to stably and accurately open the two pieces of material, which is beneficial to the subsequent double-needle stitching and edging, and improves the sewing processing quality.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A feeding mechanism with an intermediate pressure core includes a supporting mechanism. The supporting mechanism includes two supporting members spaced apart along the X-axis, an intermediate pressure core located between the two supporting members, an X-axis opening and closing drive mechanism, and a mounting base. The two supporting members are connected to the X-axis opening and closing drive mechanism, which drives the two supporting members to move synchronously away from the material pieces on both sides of the opening of the intermediate seam or to move towards each other and reset synchronously along the X-axis. The intermediate pressure core has a pressing part for pressing the workpiece downwards. The X-axis opening and closing drive mechanism and the intermediate pressure core are respectively mounted on the mounting base.

[0009] As a preferred embodiment, the pressing part of the intermediate pressing core is provided with a clearance groove facing the conveying side.

[0010] As a preferred embodiment, the bottom of the intermediate pressure core is flush with the bottom of the two support members, or the bottom of the intermediate pressure core extends downward beyond the bottom of the two support members.

[0011] As a preferred embodiment, the intermediate pressure core is elastically floating relative to the mounting base.

[0012] As a preferred embodiment, the material support mechanism is connected to a YZ axis drive mechanism. The YZ axis drive mechanism includes a base and a Y-axis drive mechanism and a Z-axis drive mechanism disposed on the base. The Y-axis drive mechanism is connected to and drives the Z-axis drive mechanism to translate along the Y-axis, and the Z-axis drive mechanism is connected to the mounting base and drives the material support mechanism to move up and down along the Z-axis.

[0013] As a preferred embodiment, the X-axis opening and closing drive mechanism includes a motor, a transmission assembly, and a screw. The motor drives the screw to rotate around the X-axis via the transmission assembly. The screw is provided with two reverse threads on the left and right sides. Two support members are respectively adapted to the two reverse threads, so that when the motor is working, the two support members move closer to each other or move away from each other along the screw.

[0014] As a preferred embodiment, the mounting base is provided with an X-axis guide rail extending along the X-axis, and the two support members translate along the X-axis guide rail.

[0015] As a preferred embodiment, the mounting base is provided with a sensor, and at least one support member is provided with a sensing part, the sensing part cooperating with the sensor to sense the position of the support member.

[0016] As a preferred embodiment, the lower end of the support member is a support section and the upper end is a mounting section. The mounting section is connected to the X-axis tensioning and opening drive mechanism. The support section is elastically floating relative to the mounting section. A first floating spring is connected between the mounting section and the support section. The mounting section is provided with a lower limit adjustment section and / or an upper limit adjustment section to adjust the vertical floating stroke of the support section.

[0017] A sewing device employing a feeding mechanism with an intermediate pressure core as described in any of the preceding claims.

[0018] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly uses the setting of the middle pressure core to press and position the middle seam of the workpiece, avoid displacement, facilitate the two support components to stably and accurately open the two pieces, facilitate the subsequent double-needle stitching and edging, and improve the sewing processing quality.

[0019] Furthermore, the material support mechanism is connected to a YZ axis drive mechanism, which enables the workpieces such as cap pieces to be moved and fed along the Y axis in a state of "pressing and positioning at the middle seam and spreading the material pieces on both sides" before double-needle stitching. This makes it easy to combine with a mature double-needle stitching machine for application.

[0020] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a perspective view of a feeding mechanism with an intermediate pressure core according to an embodiment of the present invention;

[0022] Figure 2 This is an exploded view of a feeding mechanism with an intermediate pressure core according to an embodiment of the present invention;

[0023] Figure 3 This is another exploded view of the feeding mechanism with intermediate pressure core according to an embodiment of the present utility model;

[0024] Figure 4 This is a perspective view of the material support mechanism of the feeding mechanism with intermediate pressure core according to an embodiment of the present utility model;

[0025] Figure 5 This is another perspective view of the material support mechanism of the feeding mechanism with intermediate pressure core according to an embodiment of the present utility model;

[0026] Figure 6 This is a structural diagram of a feeding mechanism with an intermediate pressure core, according to an embodiment of the present invention, applied to a double-needle sewing machine.

[0027] Figure 7 yes Figure 6 The cross-sectional view of the double-needle stitching machine shown (cross-section along the Y-axis);

[0028] Figure 8 This is a structural diagram of a baseball cap;

[0029] Figure 9 This is another structural illustration of a baseball cap. Detailed Implementation

[0030] Please refer to Figures 1 to 7 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0031] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", 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.

[0032] A feeding mechanism with an intermediate pressure core includes a material support mechanism 20, a YZ-axis drive mechanism 10 for driving the material support mechanism 20 to move along the Y-axis and Z-axis, and an industrial control screen 30 mounted on the YZ-axis drive mechanism 10. The YZ-axis drive mechanism 10 includes a base 11 and a Y-axis drive mechanism 12 and a Z-axis drive mechanism 13 disposed on the base. The material support mechanism 20 is connected to the Y-axis drive mechanism 12 and the Z-axis drive mechanism 13. The Y-axis drive mechanism 12 is connected to and drives the Z-axis drive mechanism 13 to move horizontally along the Y-axis, and the Z-axis drive mechanism 13 is connected to and drives the material support mechanism 20 to move vertically along the Z-axis.

[0033] The material support mechanism 20 includes two material support members 21 spaced apart along the X-axis, an intermediate pressure core 22 located between the two material support members 21, an X-axis tensioning and closing drive mechanism, and a mounting base 24. The two material support members 21 are used to respectively open the material pieces on both sides of the intermediate seam. The intermediate pressure core 22 is used to press against the intermediate seam. The two material support members 21 are connected to the X-axis tensioning and closing drive mechanism, which drives the two material support members 21 to synchronously move away from the material pieces on both sides of the opened intermediate seam or synchronously move towards each other to reset along the X-axis. The X-axis tensioning and closing drive mechanism and the intermediate pressure core 22 are respectively mounted on the mounting base 24. The bottom of the intermediate pressure core 22 is flush with the bottom of the two material support members 21, or the bottom of the intermediate pressure core 22 extends downward beyond the bottom of the two material support members 21. The intermediate pressure core 22 has a pressing part for pressing the workpiece downward, specifically for pressing against the intermediate seam. The pressing part has a relief groove 2201 facing the conveying side.

[0034] The X-axis opening and closing drive mechanism includes a motor 23, a transmission assembly 231, and a screw 232. The transmission assembly 23 includes a first transmission wheel, a second transmission wheel, and a synchronous belt connecting the first and second transmission wheels. The first transmission wheel is connected to the motor 23, and the second transmission shaft is connected to the screw 232. The motor 23 drives the screw 232 to rotate around the X-axis via the transmission assembly 231. The screw 232 is provided with two reverse threads spaced horizontally. Two support members 21 are respectively adapted to the two reverse threads, so that when the motor 23 is working, the two support members 21 move towards each other or away from each other along the screw 232. The mounting base 24 is provided with an X-axis guide rail 241 extending along the X-axis, and the two support members 21 translate along the X-axis guide rail 241. The mounting base 24 is provided with a sensor 242, and at least one support member 21 is provided with a sensing part 215. The sensing part 215 cooperates with the sensor 242 to sense the position of the support member. The lower end of the support member 21 is a support section, and the upper end is a mounting section 211. The mounting section 211 is connected to the X-axis opening and closing drive mechanism. The support section is elastically floating vertically relative to the mounting section 211. Correspondingly, a first Z-axis guide rail 212 is provided on the mounting section 211 for the support section to float vertically along it. A first floating spring 213 is connected between the mounting section 211 and the support section. The mounting section 211 is provided with a lower limit adjustment section 214 and / or an upper limit adjustment section to adjust the vertical floating stroke of the support section.

[0035] The intermediate pressure core 22 is elastically floating vertically relative to the mounting base 24. A second floating spring 221 connects the intermediate pressure core 22 and the mounting base 24. An adjusting bolt 222 is provided on the mounting base 24 to adjust the tension of the second floating spring 221. A lower limit part 223 is provided on the mounting base 24 to limit the maximum downward floating of the intermediate pressure core 22. Of course, the lower limit part 223 can be designed to be adjustable to flexibly adjust the downward floating limit. A second Z-axis guide rail 224 is provided on the rear side of the mounting base 24 along which the intermediate pressure core 22 floats vertically.

[0036] In use, a manual or robotic arm places the cap pieces at the feeding station and flips them open at a small angle, forming a V-shape. The material support mechanism 20 moves downward under the drive of the Z-axis drive mechanism 13, and the intermediate pressure core 22 presses against the middle seam. The two material support members 21 act on the two cap pieces and, under the drive of the X-axis opening and closing drive mechanism, synchronously move away from each other along the X-axis, thus forming a cap piece flattening area between the two material support members 21 and the intermediate pressure core 22. The cap piece flattening areas on both sides are used for subsequent double-needle sewing operations. Then, the material support mechanism 20, driven by the Y-axis drive mechanism 12, translates along the Y-axis to below the sewing machine head 50, feeding the expanded cap piece to below the sewing machine head 50. The presser foot and / or positioning component below the sewing machine head 50 positions the expanded cap piece (then the material support mechanism 20, driven by the Y-axis drive mechanism 12, translates back to its original position along the Y-axis), and double-needle sewing is performed, followed by the unloading of the sewn material. Therefore, the feeding mechanism essentially completes the process of expanding the cap piece to a state suitable for double-needle sewing with the sewing machine head 50 and feeding the cap piece in this state to below the sewing machine head 50. Regarding the sewing machine head 50 and its presser foot, positioning component, etc., mature technologies can be used without modification. For mature double-needle sewing machines, this feeding mechanism is an added functional mechanism.

[0037] like Figure 6 and Figure 7As shown, a panel is provided below the material support mechanism 20. An avoidance groove 1 extending along the Y-axis is provided on the panel. A folding mechanism 2 is provided below the avoidance groove 1 away from the sewing machine head 50 to fold up the sewing edge between the two pieces of material. A retaining groove 3 is provided below the avoidance groove 1 facing the sewing machine head 50 to keep the folded edge in position. The folding mechanism 2 includes a clamping cylinder 4 and a pushing cylinder 5. The clamping cylinder 4 is connected to a pair of clamps that open and close along the X-axis, which are used to clamp the middle sewing edge of two pieces of material. The pushing cylinder 5 is connected to the clamping cylinder 4 to drive the clamping cylinder 4 to move horizontally at a slight upward tilt. In use, after the clamps clamp the middle sewing edge of the two pieces of material, the pushing cylinder 5 drives the clamping cylinder 4 to move horizontally, so that the middle sewing edge of the two pieces of material is pushed and folded from a vertical downward state. Subsequently, during the process of the material support mechanism 20 sending the workpiece along the Y-axis to below the sewing machine head 50, the middle sewing edge of the two pieces of material is conveyed along the holding groove 3, which is in a horizontal or nearly horizontal state.

[0038] The key design feature of this invention lies in its use of a Y-axis drive mechanism, a Z-axis drive mechanism, and a material support mechanism to achieve pressing, positioning, spreading, and Y-axis translation feeding of workpieces such as cap pieces before double-needle stitching. This allows for easy integration with mature double-needle stitching machines. In particular, the central pressure core provides pressure and positioning at the middle seam of the workpiece, preventing displacement. It also facilitates the stable and precise spreading of the two material pieces by the two material support components, which is beneficial for subsequent double-needle stitching and edging, thus improving the quality of the sewing process.

[0039] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A feeding mechanism with an intermediate pressure core, characterized in that, The device includes a material support mechanism, which comprises two material support members spaced apart along the X-axis, an intermediate pressure core located between the two material support members, an X-axis tensioning and closing drive mechanism, and a mounting base. The two material support members are connected to the X-axis tensioning and closing drive mechanism, which drives the two material support members to move synchronously away from the material pieces on both sides of the middle seam along the X-axis or to move towards each other and reset synchronously. The intermediate pressure core has a pressure part for pressing the workpiece downwards. The X-axis tensioning and closing drive mechanism and the intermediate pressure core are respectively mounted on the mounting base.

2. The feeding mechanism with intermediate pressure core according to claim 1, characterized in that, The pressing section is provided with a clearance groove facing the conveying side.

3. The feeding mechanism with intermediate pressure core according to claim 1, characterized in that, The bottom of the intermediate pressure core is flush with the bottom of the two support members, or the bottom of the intermediate pressure core extends downward beyond the bottom of the two support members.

4. The feeding mechanism with intermediate pressure core according to claim 1, characterized in that, The intermediate pressure core is elastically floating relative to the mounting base.

5. The feeding mechanism with intermediate pressure core according to claim 1, characterized in that, The material support mechanism is connected to a YZ axis drive mechanism. The YZ axis drive mechanism includes a base and a Y-axis drive mechanism and a Z-axis drive mechanism disposed on the base. The Y-axis drive mechanism is connected to and drives the Z-axis drive mechanism to move horizontally along the Y-axis. The Z-axis drive mechanism is connected to the mounting base and drives the material support mechanism to move vertically along the Z-axis.

6. The feeding mechanism with intermediate pressure core according to claim 1, characterized in that, The X-axis opening and closing drive mechanism includes a motor, a transmission assembly, and a screw. The motor drives the screw to rotate around the X-axis via the transmission assembly. The screw is provided with two reverse threads on the left and right sides. Two support members are respectively adapted to the two reverse threads, so that when the motor is working, the two support members move closer to each other or move away from each other along the screw.

7. The feeding mechanism with intermediate pressure core according to claim 1, characterized in that, The mounting base is provided with an X-axis guide rail extending along the X-axis, and the two support members translate along the X-axis guide rail.

8. The feeding mechanism with an intermediate pressure core according to claim 1, 6, or 7, characterized in that, The mounting base is equipped with a sensor, and at least one support member is equipped with a sensing part, which cooperates with the sensor to sense the position of the support member.

9. The feeding mechanism with intermediate pressure core according to claim 1, characterized in that, The lower end of the support member is the support part, and the upper end is the mounting part. The mounting part is connected to the X-axis tensioning and opening drive mechanism. The support part is elastically floating relative to the mounting part. A first floating spring is connected between the mounting part and the support part. The mounting part is provided with a lower limit adjustment part and / or an upper limit adjustment part to adjust the vertical floating stroke of the support part.

10. A sewing device, characterized in that, The application has a feeding mechanism with an intermediate pressure core as described in any one of claims 1 to 9.

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