Double-head sewing machine

Abstract

The utility model discloses a double -end sewing machine, including frame, feed bin, feeding device, deviation rectifying device, translation feeding device, two sewing devices and two unloading devices, the top of frame is provided with deviation rectifying station, two sewing stations and two unloading stations, the front side of frame is located at feed bin, the feeding device is used to send the sheet of feed bin to deviation rectifying station, deviation rectifying device sets up below the frame, and deviation rectifying device sets up correspondingly deviation rectifying station, is used for vacuum suction and displacement correction of sheet on deviation rectifying station, translation feeding device sets up in the top front side of frame to remove and send sheet on deviation rectifying station to sewing station, send the sheet of sewing station to unloading station, two sewing devices are arranged on the top of frame correspondingly two sewing stations, are used for sewing processing to the sheet of sewing station, two unloading devices set up correspondingly two unloading stations, are used for sending out the sheet of unloading station, improve the sewing processing quality and efficiency of shoe heel sheet.

Description

Technical Field

[0001] This utility model relates to the field of sheet sewing technology, and in particular to a double-headed sewing machine, which is mainly but not limited to the sewing processing of shoe heel sheets. Background Technology

[0002] like Figure 6 As shown, when sewing the heel panel a, it is usually necessary to stitch the two sides a1. Currently, there are two main methods in actual processing: Method 1: The heel piece a is placed manually at the sewing station below the sewing machine head. The operator visually judges whether the heel piece a is aligned. Then, the presser frame below the sewing machine head presses down the heel piece a, and the sewing process is carried out until the stitching on both sides a1 is completed.

[0003] Method 2: The automatic feeding robot pushes the shoe heel sheet a flat to the sewing station below the sewing machine head. Then, the pressure frame below the sewing machine head presses down the shoe heel sheet a, and then the sewing process is carried out until the stitching of both sides a1 is completed.

[0004] Both of the above methods are prone to misalignment of the heel panel a, making it difficult to guarantee the accuracy of the stitching on its two sides a1.

[0005] Furthermore, the current sewing process for shoe heel panels (a) generally uses a single sewing machine head, which limits further improvements in production efficiency.

[0006] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0007] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a double-headed sewing machine that improves the sewing quality and efficiency of shoe heel panels.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A double-head sewing machine includes a frame, a feeding bin, a feeding device, a correction device, a translational feeding device, two sewing devices, and two unloading devices; The top of the frame is provided with a correction station, two sewing stations and two unloading stations; the two sewing stations are located on the left and right sides of the correction station, and the two unloading stations are located on the outside of the two sewing stations. The feeding hopper is located on the front side of the frame; The feeding device is used to deliver the sheet material from the feeding hopper to the correction station; The correction device is located below the frame and is set at the correction station. It is used to vacuum hold the sheet at the correction station and correct its displacement. The translational feeding device is located on the top front side of the frame to transfer the sheet material on the correction station to the sewing station and to send the sheet material on the sewing station to the unloading station. Two sewing devices are arranged on the top of the machine frame, corresponding to two sewing stations, for sewing the sheets at the sewing stations; Two feeding devices are set up for two feeding stations to feed the sheet material out of the feeding station.

[0009] As a preferred embodiment, the feeding device includes a needle-type suction cup robot, a material picking and lifting mechanism, and a material picking Y-axis translation mechanism. The material picking and lifting mechanism drives the needle-type suction cup robot to move up and down, and the material picking Y-axis translation mechanism drives the material picking and lifting mechanism and the needle-type suction cup robot to move together along the Y-axis.

[0010] As a preferred embodiment, the correction device includes a vacuum adsorption mechanism, a rotation mechanism that drives the vacuum adsorption mechanism to rotate around the Z-axis, and an XY-axis translation mechanism that drives the rotation mechanism and the vacuum adsorption mechanism to translate together; the vacuum adsorption mechanism has a vacuum adsorption head facing upward, and correspondingly, the frame is provided with a clearance opening for the vacuum adsorption head to be exposed at the correction station.

[0011] As a preferred embodiment, the translational feeding device includes an X-axis translation mechanism and multiple transfer pressure plates arranged side by side with left and right spacing; the transfer pressure plates are liftable to press down on the sheet material and release the pressure on the sheet material upward; the X-axis translation mechanism drives the multiple transfer pressure plates to translate together along the X-axis to transfer the sheet material from the correction station to the sewing station and transfer the sheet material from the sewing station to the unloading station.

[0012] As a preferred embodiment, a photoelectric sensor is installed at the bottom of the frame corresponding to the correction station to sense the position of the sheet material; and a light-transmitting hole is provided on the top surface of the frame.

[0013] As a preferred embodiment, the feeding hopper, feeding device, correction device, translation feeding device, two sewing devices, and two unloading devices are respectively connected to the control system.

[0014] As a preferred embodiment, a leveling plate is provided on the rear side of the frame corresponding to the correction station. The leveling plate is connected to a leveling lifting mechanism and a leveling Y-axis translation mechanism. The leveling lifting mechanism drives the leveling plate to move up and down along the Z-axis, and the leveling Y-axis translation mechanism drives the leveling lifting mechanism and the leveling plate to move together along the Y-axis, so that the leveling plate moves forward above the correction station to press and level the sheet material, and moves backward to avoid it.

[0015] As a preferred embodiment, the unloading device includes a pusher and a pusher lifting drive mechanism. The frame is provided with a downward-through unloading trough corresponding to the unloading station. The pusher lifting drive mechanism drives the pusher to push the sheet down from the unloading trough.

[0016] As a preferred embodiment, a receiving bin is provided below the frame corresponding to the unloading station. The upper end of the receiving bin is connected to the unloading chute. The pushing and lifting drive mechanism drives the pushing component to push the sheet material down from the unloading chute into the receiving bin.

[0017] As a preferred embodiment, the sewing device is equipped with a pressure frame, which moves and rises / falls at the sewing station to assist the sewing action; the pressure frame is connected to a pressure frame lifting mechanism, a pressure frame X-axis translation mechanism, and a pressure frame Y-axis translation mechanism, the pressure frame lifting mechanism drives the pressure frame to rise / fall along the Z-axis, the pressure frame X-axis translation mechanism drives the pressure frame lifting mechanism to translate along the X-axis, and the pressure frame Y-axis translation mechanism drives the pressure frame X-axis translation mechanism to translate along the Y-axis.

[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 consists of a frame, a feeding bin, a feeding device, a correction device, a translational feeding device, two sewing devices, and two unloading devices. The double-headed sewing machine shares the feeding device. The sheet material is fed to the correction station, corrected by the correction device, and then sent to the sewing station for sewing processing, which effectively improves the sewing processing quality and efficiency of the shoe heel sheet.

[0019] 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

[0020] Figure 1 This is a perspective view of a double-headed sewing machine according to an embodiment of the present utility model; Figure 2 This is a perspective view of the feeding device according to an embodiment of the present utility model; Figure 3 This is a perspective view of the translational feeding device and the correction device according to an embodiment of the present utility model; Figure 4 This is a perspective view of a sewing device according to an embodiment of the present utility model; Figure 5 This is a partial structural diagram of a double-headed sewing machine according to an embodiment of the present invention (showing the feeding device); Figure 6 This is a structural diagram of a representative shoe heel sheet. Detailed Implementation

[0021] Please refer to Figures 1 to 5As shown, it illustrates the specific structure of an embodiment of the present invention.

[0022] 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.

[0023] A double-head sewing machine includes a frame 10, a feeding bin 20, a feeding device 30, a deviation correction device 40, a translational feeding device 50, two sewing devices 60, two unloading devices 70, and two unloading bins 80. The feeding bin 20, feeding device 30, deviation correction device 40, translational feeding device 50, two sewing devices 60, and two unloading devices 70 are respectively connected to a control system.

[0024] The top of the frame 10 is provided with a correction station, two sewing stations, and two unloading stations; the two sewing stations are located to the left and right of the correction station, respectively, and the two unloading stations are located to the outside of the two sewing stations, respectively; they are usually arranged symmetrically on the frame 10. A needle plate 501 is provided on the frame 10.

[0025] The feeding bin 20 is located on the front side of the frame 10; the feeding bin 20 is provided with one or more bins. In this embodiment, it is provided with two bins arranged side by side. The two bins can move left and right, and the bottom support of each bin can be raised and lowered to realize the feeding bin 20 cooperating with the feeding device 30 to pick up materials. This kind of feeding bin is a mature technology, so it will not be described in detail.

[0026] The feeding device 30 is used to deliver the sheet material from the feeding bin 20 to the alignment station. The feeding device 30 includes a needle-type suction cup robot 31, a material picking and lifting mechanism 32, and a material picking Y-axis translation mechanism 33. The material picking and lifting mechanism 32 drives the needle-type suction cup robot 31 to move up and down, and the material picking Y-axis translation mechanism 33 drives the material picking and lifting mechanism 32 and the needle-type suction cup robot 31 to move together along the Y-axis. The material picking and lifting mechanism 32 is driven by a cylinder, and the material picking Y-axis translation mechanism 33 is driven by a linear motor module, which has high precision. Several photoelectric sensors are set on the frame 10 corresponding to the alignment station to sense the position of the sheet material. Specifically, several photoelectric sensors are set at the bottom of the frame 10, and the top surface of the frame 10 is provided with light-transmitting holes. When the sheet material is placed at the alignment station, it can be determined whether the sheet material is aligned correctly. A leveling plate 53 is provided on the rear side of the frame 10 corresponding to the correction station. The leveling plate 53 is connected to a leveling lifting mechanism 54 and a leveling Y-axis translation mechanism 55. The leveling lifting mechanism 54 drives the leveling plate 53 to move up and down along the Z-axis, and the leveling Y-axis translation mechanism 55 drives the leveling lifting mechanism 54 and the leveling plate 53 to move together along the Y-axis, so that the leveling plate 53 moves forward above the correction station to press and level the sheet, and moves backward to avoid it. Both the leveling lifting mechanism 54 and the leveling Y-axis translation mechanism 55 can be driven by cylinders. When the feeding device 30 takes a sheet from the feeding bin 20 and places it at the correction station, the sheet may be uneven. Therefore, the leveling plate 53 needs to press down on the sheet to level it.

[0027] The correction device 40 is located below the frame 10 and is positioned corresponding to the correction station. It is used to vacuum-hold and correct the displacement of the sheet material at the correction station. The correction device 40 includes a vacuum adsorption mechanism, a rotation mechanism that drives the vacuum adsorption mechanism to rotate around the Z-axis, and an XY-axis translation mechanism that drives the rotation mechanism and the vacuum adsorption mechanism to translate together. The vacuum adsorption mechanism has an upward-facing vacuum adsorption head. Correspondingly, the frame is provided with a clearance opening 504 for the vacuum adsorption head to be exposed at the correction station. The XY-axis translation mechanism is a mechanism that can drive translation in both the X and Y axes. The rotation mechanism is driven by a motor. The XY-axis translation mechanism includes an X-axis drive motor and a Y-axis drive motor. For example, the X-axis drive motor drives the first base to translate along the X-axis, and the Y-axis drive motor drives the second base to translate along the Y-axis. The rotation mechanism is located on the first base, and the X-axis drive motor is located on the second base.

[0028] The translational feeding device 50 is located on the top front side of the frame 10 to transfer the sheet material at the correction station to the sewing station and to send the sheet material 100 at the sewing station to the unloading station. The translational feeding device 50 includes an X-axis translation mechanism 51 and multiple transfer pressure plates 52 arranged side by side with left and right spacing. The transfer pressure plates 52 are liftable to press down on the sheet material and release the pressure on the sheet material upward. The X-axis translation mechanism 51 drives the multiple transfer pressure plates 52 to move together along the X-axis to transfer the sheet material at the correction station to the sewing station and to transfer the sheet material at the sewing station to the unloading station.

[0029] Two sewing devices 60 are arranged on the top of the frame 10 corresponding to two sewing stations, and are used to sew the sheet material at the sewing station. Each sewing device 60 is equipped with a pressure frame 60', which moves and rises and falls at the sewing station to assist the sewing action. The pressure frame 60' is connected to a pressure frame lifting mechanism, a pressure frame X-axis translation mechanism 601', and a pressure frame Y-axis translation mechanism 602'. The pressure frame lifting mechanism drives the pressure frame 60' to rise and fall along the Z-axis, the pressure frame X-axis translation mechanism 601' drives the pressure frame lifting mechanism to translate along the X-axis, and the pressure frame Y-axis translation mechanism 602' drives the pressure frame X-axis translation mechanism 601' to translate along the Y-axis.

[0030] Two feeding devices 70 are set up corresponding to two feeding stations, used to feed the sheet material from the feeding station. Each feeding device 70 includes a pusher 71 and a pusher lifting drive mechanism 72. The frame 10 is provided with a downward-through feeding trough 503 corresponding to the feeding station. The pusher lifting drive mechanism 72 drives the pusher 71 to push the sheet material down from the feeding trough 503. A receiving bin 80 is set up below the frame 10 corresponding to the feeding station. The upper end of the receiving bin 80 is through the feeding trough 503. The pusher lifting drive mechanism 72 drives the pusher 71 to push the sheet material 100 down from the feeding trough 503 into the receiving bin 80.

[0031] Next, the working process of the double-headed sewing machine in this embodiment will be described: 1. The feeding device 30 takes the shoe heel sheet from the feeding hopper 20 and places it at the correction station.

[0032] 2. The leveling plate 53 is moved forward to above the correction station and then pressed down on the sheet to level it.

[0033] 3. Photoelectric sensor, senses the position of the sheet; the control system compares the sensed actual position with the stored standard position, and then controls the correction device 40 to operate to correct the sheet.

[0034] 4. The translational feeding device 50 delivers the corrected sheet material to the sewing station below the sewing device 60, where the sewing device 60 stitches the two sides a1 of the shoe heel sheet a.

[0035] 5. The translational feeding device 50 transfers the completed shoe heel sheet a to the unloading station.

[0036] 6. The pusher 71 of the feeding device 70 pushes the sheet material down from the feeding trough 503 into the receiving bin 80.

[0037] The translational feeding device 50 can feed sheet material to another sewing device while one sewing device 60 is performing sewing processing. Therefore, the timing of the two sewing devices completing the stitching is alternate.

[0038] The key design features of this invention are the frame, feeding bin, feeding device, correction device, translation feeding device, two sewing devices, and two unloading devices. The double-headed sewing machine shares the feeding device. The sheet material is fed to the correction station, corrected by the correction device, and then sent to the sewing station for sewing processing, effectively improving the sewing quality and efficiency of the shoe heel sheet.

[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 double-headed sewing machine, characterized in that, It includes a frame (10), a feeding bin (20), a feeding device (30), a correction device (40), a translational feeding device (50), two sewing devices (60) and two unloading devices (70); The top of the frame (10) is provided with a correction station, two sewing stations and two unloading stations; the two sewing stations are located on the left and right sides of the correction station, and the two unloading stations are located on the outside of the two sewing stations. The feeding hopper (20) is located on the front side of the frame (10); The feeding device (30) is used to deliver the sheet material from the feeding bin (20) to the correction station; The correction device (40) is located below the frame (10). The correction device (40) is set in relation to the correction station and is used to vacuum hold the sheet at the correction station and correct its displacement. The translational feeding device (50) is located on the top front side of the frame (10) to transfer the sheet material on the correction station to the sewing station and to send the sheet material on the sewing station to the unloading station. Two sewing devices (60) are arranged on the top of the frame (10) corresponding to two sewing stations, for sewing the sheet material at the sewing station; Two feeding devices (70) are set up for two feeding stations to feed out the sheet material from the feeding station.

2. The double-headed sewing machine according to claim 1, characterized in that, The feeding device (30) includes a needle-type suction cup robot (31), a material picking and lifting mechanism (32), and a material picking Y-axis translation mechanism (33). The material picking and lifting mechanism (32) drives the needle-type suction cup robot (31) to move up and down, and the material picking Y-axis translation mechanism (33) drives the material picking and lifting mechanism (32) and the needle-type suction cup robot (31) to move together along the Y-axis.

3. The double-headed sewing machine according to claim 1, characterized in that, The correction device (40) includes a vacuum adsorption mechanism, a rotation mechanism that drives the vacuum adsorption mechanism to rotate around the Z-axis, and an XY-axis translation mechanism that drives the rotation mechanism and the vacuum adsorption mechanism to translate together; the vacuum adsorption mechanism has a vacuum adsorption head facing upward, and correspondingly, the frame is provided with a clearance opening (504) for the vacuum adsorption head to be exposed at the correction station.

4. The double-headed sewing machine according to claim 1, characterized in that, The translational feeding device (50) includes an X-axis translation mechanism (51) and multiple transfer pressure plates (52) arranged side by side with left and right spacing. The transfer pressure plates (52) are liftable to press down on the sheet material and release the pressure on the sheet material upward. The X-axis translation mechanism (51) drives multiple transfer pressure plates (52) to move together along the X-axis to transfer the sheet material from the correction station to the sewing station and transfer the sheet material from the sewing station to the unloading station.

5. The double-headed sewing machine according to claim 1, characterized in that, A photoelectric sensor is provided below the frame (10) corresponding to the correction station to sense the position of the sheet material; a light-transmitting hole is provided on the top surface of the frame (10).

6. The double-headed sewing machine according to claim 1, characterized in that, The feeding bin (20), feeding device (30), correction device (40), translation feeding device (50), two sewing devices (60) and two unloading devices (70) are respectively connected to the control system.

7. The double-headed sewing machine according to claim 1, characterized in that, A leveling plate (53) is provided on the rear side of the frame (10) corresponding to the correction station. The leveling plate (53) is connected to a leveling lifting mechanism (54) and a leveling Y-axis translation mechanism (55). The leveling lifting mechanism (54) drives the leveling plate (53) to move up and down along the Z-axis. The leveling Y-axis translation mechanism (55) drives the leveling lifting mechanism (54) and the leveling plate (53) to move together along the Y-axis, so that the leveling plate (53) moves forward above the correction station to press and level the sheet material and moves backward to avoid it.

8. The double-headed sewing machine according to claim 1, characterized in that, The feeding device (70) includes a pusher (71) and a pusher lifting drive mechanism (72). The frame (10) is provided with a downward-through feeding trough (503) corresponding to the feeding station. The pusher lifting drive mechanism (72) drives the pusher (71) to push the sheet down from the feeding trough (503).

9. The double-headed sewing machine according to claim 8, characterized in that, A receiving bin (80) is provided below the frame (10) corresponding to the unloading station. The upper end of the receiving bin (80) is connected to the unloading chute (503). The pushing and lifting drive mechanism (72) drives the pushing component (71) to push the sheet down from the unloading chute (503) into the receiving bin (80).

10. The double-headed sewing machine according to claim 1, characterized in that, The sewing device (60) is equipped with a pressure frame (60'), which moves and rises at the sewing station to assist the sewing action; the pressure frame (60') is connected to a pressure frame lifting mechanism, a pressure frame X-axis translation mechanism (601'), and a pressure frame Y-axis translation mechanism (602'), the pressure frame lifting mechanism drives the pressure frame (60') to rise and fall along the Z-axis, the pressure frame X-axis translation mechanism (601') drives the pressure frame lifting mechanism to translate along the X-axis, and the pressure frame Y-axis translation mechanism (602') drives the pressure frame X-axis translation mechanism (601') to translate along the Y-axis.

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