Automatic material moving and joining device for waistband sewing, sewing equipment and method

Abstract

The invention relates to an automatic material moving and joining device for waistband sewing and sewing equipment and method.The automatic material moving and joining device comprises a working platform, a material pressing mechanism, a feeding and discharging moving mechanism and an electric control system, and the material pressing mechanism comprises a waistband pressing plate, a lower pressing plate, an automatic connecting assembly, an upper pressing plate and a material pressing driving assembly; the waistband pressing plate is fixedly connected to the lower pressing plate, the lower pressing plate is fixedly connected with the upper pressing plate through the automatic connecting assembly, the automatic connecting assembly can enable the upper pressing plate and the lower pressing plate to be connected or disconnected, and the pressing driving assembly is connected with the upper pressing plate and can drive the upper pressing plate to ascend and descend. The waistband pressing plate can be pressed down to the waistband placed on the waistband in-out path surface; the feeding and discharging moving mechanism can drive the upper pressing plate to move along the feeding and discharging path, and when the upper pressing plate moves along the feeding and discharging path, the waistband pressing plate pressing the waistband downwards can drive the waistband to move along the waistband feeding and discharging path face. The electric control system controls the pressing mechanism and the feeding and discharging moving mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of sewing, and in particular to an automatic material transfer and connection device, sewing equipment and method for waistband sewing. Background Art

[0002] In the field of jeans sewing, during the process of sewing the waistband of jeans, the two layers of cloth of the waistband need to be folded and interlocked before sewing. Currently, a single waistband is folded and interlocked manually, and then put into the sewing unit manually for manual sewing. Among them, folding and interlocking and properly putting the waistband into the sewing unit for sewing have high requirements on the workers' skill proficiency and take a long time, which seriously affects the production efficiency of the entire production line.

[0003] Therefore, in order to improve the sewing efficiency of the jeans waistband and increase the production volume of the factory, a technology is needed to automatically move the trousers waistband and perform sewing actions with the sewing unit. Summary of the invention

[0004] In view of the shortcomings of the prior art mentioned above, the technical problem to be solved by the present invention is to provide an automatic material moving and connecting device, sewing equipment and method for waistband sewing, which can automatically move the waistband in and out of the sewing unit, realize the automatic connection between the waistband material collection and release and the sewing work, and improve the sewing efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides an automatic material transfer and connection device for waistband sewing, which is used to move the waistband into a sewing unit. The automatic material transfer and connection device includes a working platform, a material pressing mechanism, a material inlet and outlet moving mechanism and an electric control system. The working platform is provided with a waistband inlet and outlet path surface for placing and moving the waistband, and the waistband can enter the sewing unit when moving on the waistband inlet and outlet path surface. The material pressing mechanism includes a waistband pressing plate, a lower pressing plate, an automatic connecting component, an upper pressing plate and a material pressing driving component. The waistband pressing plate is provided with a plurality of sewing working grooves for waistband sewing. The waistband pressing plate is fixedly connected to the lower pressing plate, and the lower pressing plate is fixedly connected to the upper pressing plate through the automatic connecting component. The automatic connection component includes a lower connection structure arranged on the lower pressure plate, and an upper connection structure arranged on the upper pressure plate and matched with the lower connection structure. The upper connection structure and the lower connection structure can establish a connection or release a connection. The pressing drive component is connected to the upper pressure plate, can drive the upper pressure plate to move up and down, and can make the waistband pressing plate press down on the waistband placed on the waistband entry and exit path surface; the feeding and discharging moving mechanism can drive the upper pressure plate to move along the feeding and discharging path, and when the upper pressure plate moves along the feeding and discharging path, the waistband pressing plate pressing down on the waistband can move with the waistband along the waistband entry and exit path surface; the electronic control system is respectively controlled and connected with the automatic connection component, the pressing drive component and the feeding and discharging moving mechanism.

[0006] Furthermore, one of the upper connection structure and the lower connection structure of the automatic connection component includes an electromagnet and the other includes a magnetic attraction sheet. The electric control system is control-connected to the electromagnet and can control the on and off of the electromagnet.

[0007] Furthermore, one of the upper connecting structure and the lower connecting structure of the automatic connecting component includes a locking block, and the other includes an insertion rod and a locking drive unit that drives the insertion rod to move. A socket is provided in the locking block. When the insertion rod is inserted into the socket of the locking block, the upper connecting structure and the lower connecting structure are connected, and when the insertion rod is pulled out of the socket, the upper connecting structure and the lower connecting structure are disconnected. The electronic control system is connected to the locking drive unit for control.

[0008] Furthermore, the pressing mechanism also includes a docking positioning assembly, which includes an upper positioning structure arranged on the upper pressing plate and a lower positioning structure arranged on the lower pressing plate. When the upper connecting structure on the upper pressing plate is connected to the lower connecting structure on the lower pressing plate, the upper positioning structure cooperates with the lower positioning structure and limits the relative position of the upper pressing plate and the lower pressing plate in the horizontal direction.

[0009] Furthermore, one of the upper positioning structure and the lower positioning structure includes a plurality of first wedge-shaped positioning blocks, and the other includes a plurality of first wedge-shaped grooves corresponding to the first wedge positioning blocks. The corresponding first wedge positioning blocks and the first wedge positioning grooves are adapted in shape. When the first wedge positioning block is arranged on the lower pressure plate, its shape gradually becomes larger from top to bottom, and when it is arranged on the upper pressure plate, its shape gradually becomes smaller from top to bottom. When the upper connecting structure on the upper pressure plate and the lower connecting structure on the lower pressure plate remain relative to each other, the corresponding first wedge positioning block remains aligned with the first wedge groove. When the upper connecting structure and the lower connecting structure establish connection, the first wedge positioning block is inserted into the first wedge groove, and the sides of the two are abutted against each other.

[0010] Furthermore, there are at least two first wedge-shaped positioning blocks, and the two first wedge-shaped positioning blocks extend along a straight line and are perpendicular to each other, and the cross-section of the first wedge-shaped positioning block perpendicular to the straight line extension direction is a trapezoid.

[0011] Furthermore, the material pressing driving assembly drives the upper pressing plate to move up and down linearly, and when the lower pressing plate is fixedly connected to the upper pressing plate, the waistband pressing plate is located above the waistband entry and exit path surface.

[0012] The present invention also provides a sewing device for waistband sewing, comprising a sewing unit and the above-mentioned automatic material transfer and connection device.

[0013] Furthermore, a lifting and lowering pressing frame is provided in the sewing unit, and the sewing machine can drive the pressing frame to move up and down. When the automatic material transfer and connection device drives the waistband into the sewing unit, the lower pressing plate is located below the pressing frame.

[0014] The present invention also provides a sewing method for waistband sewing, which is performed using the sewing device as described above, and comprises the following steps:

[0015] S1. In the initial state, the lower pressing plate of the pressing mechanism in the automatic material transfer and connection device is fixedly connected with the upper pressing plate through the automatic connection component;

[0016] S2. A waistband placement position is provided on the waistband entry and exit path surface of the working platform, and the folded waistband is placed in the waistband placement position;

[0017] S3, the material inlet and outlet moving mechanism and the material pressing driving assembly of the automatic material moving and connecting device are actuated to drive the upper pressing plate to move, so that the waistband pressing plate presses the folded waistband;

[0018] S4, the material inlet and outlet moving mechanism is actuated to drive the upper pressing plate to move along the material inlet and outlet path, and the waistband pressing plate moves the waistband on the working platform along the waistband inlet and outlet path surface to the specified position in the sewing unit; then the automatic connection component of the pressing mechanism releases the connection between the upper pressing plate and the lower pressing plate, the pressing drive component is actuated and the material inlet and outlet moving mechanism is actuated, driving the upper pressing plate to separate from the lower pressing plate and leave the sewing unit;

[0019] S5, the sewing unit performs waistband sewing work;

[0020] S6. After the waistband is sewn, the feeding and discharging moving mechanism and the pressing driving assembly are activated to drive the upper pressing plate into the sewing unit and to be in a connectable position with the lower pressing plate. The automatic connecting assembly is activated to connect the upper pressing plate and the lower pressing plate, and the waistband pressing plate presses the folded waistband;

[0021] S7, the material inlet and outlet moving mechanism is activated, driving the upper pressing plate to move along the material inlet and outlet path, and the waistband pressing plate moves along the waistband inlet and outlet path surface with the waistband on the working platform, leaves the sewing unit and reaches the material receiving position; then the material pressing drive assembly drives the upper pressing plate to rise, and the waistband pressing plate is separated from the waistband.

[0022] As described above, the automatic material transfer and connection device, sewing equipment and method according to the present invention have the following beneficial effects:

[0023] 1. The automatic material transfer and connection device can automatically bring the folded waistband into the sewing unit. During the sewing process, it can also press the waistband to keep it stable without affecting the sewing work. After sewing is completed, the waistband is automatically taken out to achieve automatic connection between material collection and release and sewing work, thereby improving sewing efficiency.

[0024] 2. During the operation of the pressing mechanism, the upper pressing plate and the lower pressing plate can be automatically and quickly connected or disconnected through the automatic connection component, and the horizontal positioning is achieved through the docking positioning component composed of the first wedge-shaped positioning block and the first wedge-shaped groove, thereby avoiding the problem of misalignment and shaking of the waistband pressing plate during the movement of the feeding and discharging moving mechanism.

[0025] 3. The sewing unit of the sewing equipment presses the lower pressing plate through the pressing frame during sewing to ensure that the waistband is in a stable position without affecting the sewing work. The pressing frame and the lower pressing plate are positioned in the horizontal direction in a straight line through the second wedge-shaped positioning block and the second wedge-shaped groove, and the work is stable and reliable.

[0026] 4. The sewing machine in the sewing unit can adopt various models and can realize position adjustment, which has good flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the sewing equipment of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the first embodiment of the pressing mechanism in the present invention.

[0029] Figure 3 It is a structural schematic diagram of the material feeding and discharging moving mechanism in the present invention.

[0030] Figure 4 It is a schematic structural diagram of the sewing unit in the present invention.

[0031] Figure 5 It is a working schematic diagram of the automatic material transfer and connection device in the present invention after sending the waistband into the sewing unit.

[0032] Figure 6 The figure is a working schematic diagram of the sewing unit of the present invention when sewing the waistband.

[0033] Figure 7 It is a structural schematic diagram of the second embodiment of the pressing mechanism in the present invention.

[0034] Figure 8 Schematic diagram of the working state of the automatic connection component in the second embodiment of the pressing mechanism of the present invention when establishing connection

[0035] Description of Figure Numbers

[0036] 1 Working platform

[0037] 2 Pressing mechanism

[0038] 21 Waist Press Plate

[0039] 211 Sewing work slot

[0040] 22 Lower pressure plate

[0041] 23 Automatically connect components

[0042] 231 Electromagnet

[0043] 232 Magnetic Sheet

[0044] 233 Lock block

[0045] 234 Locking Cylinder

[0046] 235 Cylinder Connectors

[0047] 236 Rod

[0048] 24 Upper pressure plate

[0049] 25 Press drive assembly

[0050] 251 Adjustment plate

[0051] 252 Support sheet

[0052] 253 Slide Cylinder

[0053] 254 Mounting Plate

[0054] 255 Mobile Cantilever

[0055] 26 First wedge positioning block

[0056] 27 Second wedge-shaped positioning block

[0057] 3. Material feeding and discharging moving mechanism

[0058] 31 Base

[0059] 32 Linear guides

[0060] 33 Mobile rack

[0061] 34 Timing belt drive assembly

[0062] 35 Tension adjustment assembly

[0063] 351 Adjustment seat

[0064] 352 Fixing screw

[0065] 353 Adjusting screw

[0066] 36 Motor

[0067] 37 First position sensor

[0068] 38 Second position sensor

[0069] 4 Sewing units

[0070] 41 Sewing machine

[0071] 42 Press frame

[0072] 43 platen

[0073] 44 Load-bearing plate

[0074] 45 Height adjustment bolt

[0075] 46 Fixing bolt

[0076] 47 Height adjustment plate DETAILED DESCRIPTION

[0077] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0078] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0079] See also Figures 1 to 8The present invention provides an automatic material transfer and connection device for waistband sewing, which is used to move the waistband into a sewing unit 4. The automatic material transfer and connection device includes a working platform 1, a material pressing mechanism 2, a material inlet and outlet moving mechanism 3 and an electric control system. The working platform 1 is provided with a waistband inlet and outlet path surface for placing and moving the waistband, and the waistband can enter the sewing unit 4 when moving on the waistband inlet and outlet path surface. The material pressing mechanism 2 includes a waistband pressing plate 21, a lower pressing plate 22, an automatic connecting component 23, an upper pressing plate 24 and a material pressing driving component 25. The waistband pressing plate 21 is provided with a plurality of sewing working grooves 211 for waistband sewing. The waistband pressing plate 21 is fixedly connected to the lower pressing plate 22, and the lower pressing plate 22 is fixedly connected to the upper pressing plate 24 through the automatic connecting component 23. The automatic connecting component 23 includes a lower connecting structure arranged on the lower pressing plate 22, an upper connecting structure arranged on the upper pressing plate 24, and a lower connecting structure arranged on the lower pressing plate 22. The pressing plate 24 and the upper connecting structure that cooperates with the lower connecting structure can establish or disconnect the connection between the upper connecting structure and the lower connecting structure. When the connection is established, the lower pressing plate 22 and the upper pressing plate 24 are in a fixed connection state, and the two move synchronously. When the connection is disconnected, the upper pressing plate 24 can move freely relative to the lower pressing plate 22; the pressing drive assembly 25 can drive the upper pressing plate 24 to move up and down, and can make the waistband pressing plate 21 press down on the waistband placed on the waistband inlet and outlet path surface; the feeding and discharging moving mechanism 3 is connected to the pressing mechanism 2, and can drive the upper pressing plate 24 to move along the feeding and discharging path, and when the upper pressing plate 24 moves along the feeding and discharging path, the waistband pressing plate 21 that presses down the waistband can move along the waistband inlet and outlet path surface with the waistband; the electric control system is respectively controlled and connected with the automatic connection assembly 23, the pressing drive assembly 25 and the feeding and discharging moving mechanism 3. The electric control system can borrow the electric control system in the sewing unit 4, or it can be set separately.

[0080] The main working principle of the automatic material transfer and connection device of the present invention is as follows: a waistband placement position is provided on the waistband inlet and outlet path surface of the working platform 1, and the folded waistband is placed in the waistband placement position; before the material transfer work, the pressing mechanism 2 is in an initial state, at which time the lower pressing plate 22 is fixedly connected with the upper pressing plate 24 through the automatic connection component 23, and the two are kept in a fixed connection state; the material inlet and outlet moving mechanism 3 and the pressing drive component 25 are controlled by the electric control system to move, and the upper pressing plate 24 is driven to move, and the lower pressing plate 22 and the waistband pressing plate 21 are moved to the waistband placement position as a whole with the upper pressing plate 24, and the pressing drive component 25 applies downward pressure to the lower pressing plate 22, so that the waistband The upper pressing plate 21 presses the folded waistband; then the feeding and discharging moving mechanism 3 acts to drive the upper pressing plate 24 to move along the feeding and discharging path, and the waistband pressing plate 21 moves the waistband on the working platform 1 along the waistband feeding and discharging path surface to the specified position in the sewing unit 4; then the electric control system controls the automatic connection component 23 of the pressing mechanism 2 to automatically release the connection between the upper pressing plate 24 and the lower pressing plate 22, and the upper pressing plate 24 can move freely relative to the lower pressing plate 22 at this time, and the pressing driving component 25 acts to drive the upper pressing plate 24 to separate from the lower pressing plate 22, and the feeding and discharging moving mechanism 3 drives the upper pressing plate 24 to leave the sewing unit 4, so as not to affect the sewing of the waistband by the sewing unit 4. When the sewing unit 4 sews the waistband, the waistband pressing plate 21 can be used to keep pressing the waistband, and the sewing work can be performed through the sewing working groove 211 on the waistband pressing plate 21. The shape of the sewing working groove 211 can be set according to the requirements of the waistband shape, sutures, etc. After the waistband is sewn, the feed-in and feed-out moving mechanism 3 and the material pressing driving assembly 25 are controlled by the electric control system to move, and the upper pressing plate 24 is driven to move to the sewing unit 4. Specifically, the upper pressing plate 24 can be returned to the position where it can be connected with the lower pressing plate 22 according to the original path when leaving, and then the automatic connection assembly 23 is activated to reconnect the upper pressing plate 24 and the lower pressing plate 22, and the downward pressure is applied by the material pressing driving assembly 25, and the waistband pressing plate 21 presses the waistband. Then the feed-in and feed-out moving mechanism 3 is activated to drive the upper pressing plate 24 to move along the feed-in and feed-out path, and the waistband pressing plate 21 moves with the waistband on the working platform 1 along the waistband feed-in and feed-out path surface, leaving the sewing unit 4 and reaching the material receiving position, which can be the same as the waistband placement position. Then the material pressing driving assembly 25 drives the upper pressing plate 24 to rise, and the waistband pressing plate 21 is separated from the waistband, and the waistband and trousers are collected and removed, and the automatic material transfer connection device can perform the next movement work. The automatic material transfer and connection device can automatically move the waistband in and out of the sewing unit 4, realize the automatic connection between material collection and release and sewing work, and improve the sewing efficiency.

[0081] See also Figures 1 to 8 The automatic material transfer and connection device of the present invention is further described below with reference to several specific embodiments:

[0082] Embodiment 1:

[0083] See also Figures 1 to 6 , is a schematic diagram of the structure of the first embodiment of the automatic material transfer connection device. In this embodiment, as a preferred design, the upper connection structure and the lower connection structure of the automatic connection component 23, one of which includes an electromagnet 231 and the other includes a magnetic suction sheet 232. Specifically, see Figure 2 , the upper connecting structure includes a plurality of electromagnets 231, and the lower connecting structure includes a plurality of magnetic suction sheets 232. When the lower pressing plate 22 is connected to the upper pressing plate 24, the upper pressing plate 24 is located directly above the lower pressing plate 22. At this time, the electromagnet 231 and the magnetic suction sheet 232 are kept in one-to-one correspondence. The electric control system is connected to the control of the electromagnet 231, and can control the power on and off of the electromagnet 231. When the electromagnet 231 is powered on, it adsorbs the magnetic suction sheet 232 to achieve a fixed connection, and the upper pressing plate 24 can well apply downward pressure to the lower pressing plate 22. When the electromagnet 231 is powered off, it no longer adsorbs and fixes the magnetic suction sheet 232, and the upper pressing plate 24 can be freely separated from the lower pressing plate 22 by moving upward. In other embodiments, the electromagnet 231 and the magnetic suction sheet 232 can also be interchanged. In addition, the upper pressing plate 24 may not be located directly above the lower pressing plate 22 when connected, that is, the upper pressing plate 24 and the lower pressing plate 22 can also be connected on the side.

[0084] In this embodiment, see Figure 2 As a preferred design, the pressing mechanism 2 also includes a docking positioning assembly, which includes an upper positioning structure arranged on the upper pressing plate 24 and a lower positioning structure arranged on the lower pressing plate 22. When the upper connecting structure on the upper pressing plate 24 is connected to the lower connecting structure on the lower pressing plate 22, the upper positioning structure cooperates with the lower positioning structure and limits the relative positions of the upper pressing plate 24 and the lower pressing plate 22 in the horizontal direction. Specifically, in the present embodiment, the lower positioning structure includes a plurality of first wedge-shaped positioning blocks 26, which are fixed on the upper surface of the lower pressure plate 22, and the upper positioning structure includes a plurality of first wedge-shaped grooves corresponding to the first wedge-shaped positioning blocks 26, which are arranged on the bottom surface of the upper pressure plate 24, and the corresponding first wedge-shaped positioning blocks 26 are adapted to the shapes of the first wedge-shaped positioning grooves, and the shapes of the first wedge-shaped positioning blocks 26 gradually become larger from top to bottom. When the upper pressure plate 24 moves to be located above the lower pressure plate 22, and the electromagnet 231 of the upper connecting structure and the magnetic suction sheet 232 of the lower connecting structure remain relatively aligned, the corresponding first wedge-shaped positioning blocks 26 and the first wedge-shaped positioning grooves remain aligned up and down, and the upper pressure plate 24 is lowered to be close to the lower pressure plate 22, and the electromagnet 231 contacts and connects with the magnetic suction sheet 232, the first wedge-shaped positioning blocks 26 are inserted into the corresponding first wedge-shaped grooves, and the sides of the two are abutted against each other to achieve cooperation, thereby limiting the relative positions of the upper pressure plate 24 and the lower pressure plate 22 in the horizontal direction. In other embodiments, the upper positioning structure may include a first wedge-shaped positioning block 26 fixed to the upper pressure plate 24, and the lower positioning structure may include a first wedge-shaped groove arranged on the upper surface of the lower pressure plate 22. In this case, the shape of the first wedge-shaped positioning block 26 gradually becomes smaller from top to bottom.

[0085] In this embodiment, see Figure 2 Further, there are at least two first wedge-shaped positioning blocks 26, and the two first wedge-shaped positioning blocks 26 extend in a straight line and are perpendicular to each other, one of the first wedge-shaped positioning blocks 26 extends in a straight line in the X direction (left-right direction), and the other extends in a straight line in the Y direction (front-back direction), and the cross section of the first wedge-shaped positioning block 26 perpendicular to the straight extension direction thereof is a trapezoid, and correspondingly, there are at least two first wedge-shaped grooves, which extend in the X direction and the Y direction respectively, and keep a one-to-one correspondence with the two first wedge-shaped positioning blocks 26, and the cross section of the first wedge-shaped groove is also a trapezoid, so as to facilitate the first wedge-shaped positioning block 26 to be inserted into the first wedge-shaped groove, and ensure that the sides of the two are kept close to each other. When the first wedge-shaped positioning block 26 extending in the X direction is inserted into the first wedge-shaped groove, it can limit the relative position of the upper pressing plate 24 and the lower pressing plate 22 in the Y direction, and when the first wedge-shaped positioning block 26 extending in the Y direction is inserted into the first wedge-shaped groove, it can limit the relative position of the upper pressing plate 24 and the lower pressing plate 22 in the X direction. In other embodiments, the first wedge-shaped positioning block 26 and the first wedge-shaped groove may also adopt other shapes and numbers. The shapes of the two are kept matched and can be smoothly inserted, and the relative positions of the upper pressure plate 24 and the lower pressure plate 22 in the horizontal direction can be limited by side abutment.

[0086] In this embodiment, see Figure 1 and Figure 3 The waistband pressing plate 21 is fixedly connected to the lower pressing plate 22 in a detachable manner, for example, by bolts, so that different waistband pressing plates 21 can be replaced according to the waistband needs. In other embodiments, the waistband pressing plate 21 can also be an integral plate structure with the lower pressing plate 22.

[0087] In this embodiment, see Figure 2As a preferred design, the pressing drive assembly 25 drives the upper pressing plate 24 to move linearly up and down, and the linear lifting movement is preferably perpendicular to the working platform 1. When the lower pressing plate 22 is fixedly connected to the upper pressing plate 24, the waist pressing plate 21 is located above the waist inlet and outlet path surface. In this way, when working, the pressing drive assembly 25 only needs to drive the upper pressing plate 24 to move linearly up and down, so that the waist pressing plate 21 can press down the waist located on the waist inlet and outlet path surface, or separate from the waist upward. The pressing drive assembly 25 includes an adjustment plate 251, a support sheet 252, a slide cylinder 253, a mounting sheet 254 and a movable cantilever 255, etc. The movable cantilever 255 is connected to the inlet and outlet moving mechanism 3, and the two slide cylinders 253 are fixedly installed on the movable cantilever 255 through the mounting sheet 254. The adjustment plate 251 is respectively connected to the two slide cylinders 253 through two support sheets 252, and the adjustment plate 251 is fixedly connected to the upper pressing plate 24. The support plate 252 and the adjustment plate 251 are driven to move vertically by the slide cylinder 253, thereby driving the linear lifting movement of the upper pressing plate 24. The feeding and discharging moving mechanism 3 drives the moving cantilever 255 to move, thereby driving the upper pressing plate 24 to move along the feeding and discharging path. In other embodiments, the pressing drive assembly 25 can also adopt other suitable mechanisms, and in addition to driving the upper pressing plate 24 to move in a direction perpendicular to the working plane, the pressing drive assembly 25 can also drive the upper pressing plate 24 to move in a horizontal direction, so that the upper pressing plate 24 leaves the upper part of the waistband feeding and discharging path surface, which is convenient for the placement and collection of the waistband on the working platform 1.

[0088] In this embodiment, see Figure 2 As a preferred design, a plurality of adjustment strip holes extending along the Y direction (front-back direction) are arranged on the adjustment plate 251 of the pressing driving assembly 25. The connection bolts are passed through the adjustment strip holes and connected to the upper pressing plate 24. The width of the connection bolts in the X direction (left-right direction) is also greater than the diameter of the connection bolts. When the connection bolts are loosened, they can move in the front-back direction in the adjustment strip holes to achieve the front-back movement adjustment of the upper pressing plate 24 in the horizontal direction. The connection bolts move in the left-right direction in a small dimension in the adjustment strip holes, thereby achieving the left-right movement adjustment of the upper pressing plate 24 in the horizontal direction, and can also achieve a small-dimension rotation of the upper pressing plate 24 around the Z axis, so that the relative position of the waistband pressing plate 21 and the waistband can be adjusted during work, which is more flexible to use.

[0089] In this embodiment, see Figure 1 and Figure 2As a preferred design, the sewing working grooves 211 on the waistband pressing plate 21 are set to two or more. During sewing, multiple waistbands can be pressed at one time by the waistband pressing plate 21, and multiple waistbands can be driven into the sewing unit 4. Multiple stations can be set in the sewing unit 4 to sew multiple waistbands respectively. Or a motion mechanism capable of moving the lower pressing plate 22 and the waistband pressing plate 21 in a small range is provided in the sewing unit 4 to move different waistbands to the stations. The sewing working grooves 211 on the waistband pressing plate 21 can also be set to be movable, and the positions of the two sewing working grooves 211 can be switched by switching components. At this time, only one station is needed in the sewing unit 4 to sew multiple waistbands.

[0090] In this embodiment, see Figure 1 and Figure 3 As a preferred design, the feeding and discharging moving mechanism 3 includes a base 31, a linear guide 32, a mobile frame 33, a synchronous belt drive assembly 34 and a servo motor 36, etc. The base 31 is made of aluminum profiles, the linear guide 32 is installed on the base 31, the mobile frame 33 is installed in the linear guide 32, and can move along the linear guide 32, the synchronous belt drive assembly 34 and the servo motor 36 are installed on the base 31, and the servo motor 36 is connected to the mobile frame 33 through the synchronous belt drive assembly 34. The synchronous belt drive assembly 34 includes a synchronous belt and a pulley, which is a conventional structure. The synchronous belt is connected to the mobile frame 33, and the mobile cantilever 255 of the pressing mechanism 2 is fixed to the mobile frame 33. When the servo motor 36 rotates, it drives the synchronous belt to move through the pulley, drives the mobile frame 33 to move along the linear guide 32, and makes the pressing mechanism 2 move linearly, and the feeding and discharging path of the upper pressing plate 24 is a linear path. In other embodiments, the feeding and discharging moving mechanism 3 can also adopt other existing suitable structures. Furthermore, a tension adjustment assembly 35 for adjusting the tension of the synchronous belt is also provided on the base 31. The tension adjustment assembly 35 includes an adjustment seat 351, a fixing screw 352 and an adjusting screw 353. The adjustment seat 351 is provided with a strip hole. The fixing screw 352 passes through the strip hole and is screwed to the base 31, thereby fixing the adjustment seat 351 on the base 31. A pulley of the synchronous belt transmission assembly 34 is installed on the adjustment seat 351. The adjusting screw 353 is screwed to the base 31 and connected to the adjustment seat 351. The axis of the adjusting screw 353 is parallel to the length direction of the strip hole of the adjustment seat 351. After loosening the fixing screw 352, the adjusting screw 353 is rotated to drive the adjustment seat 351 to move along the strip hole, that is, to adjust the movement of a pulley of the synchronous belt transmission assembly 34, thereby adjusting the tension of the synchronous belt.

[0091] In this embodiment, see Figure 1 and Figure 3, further, the feeding and discharging moving mechanism 3 also includes a first position sensor 37 and a second position sensor 38, both of which are installed on the base 31, and can be specifically a proximity switch, a photoelectric sensor, etc., and are connected to the electronic control system. When the waistband is placed on the waistband placement position on the working platform 1, the first position sensor 37 is triggered when the moving frame 33 moves to the first position, and a signal is sent and transmitted to the electronic control system. The electronic control system controls the servo motor 36 to stop according to the signal, so that the moving frame 33 moves and stops at the first position. At this time, the waistband pressing plate 21 is located directly above the waistband, waiting to press down the waistband. When the feeding and discharging moving mechanism 3 drives the pressing mechanism 2 to move the waistband into the sewing unit 4, the second position sensor 38 is triggered when the moving frame 33 moves to the second position, and a signal is sent and transmitted to the electronic control system. The electronic control system controls the servo motor 36 to stop according to the signal, so that the moving frame 33 moves and stops at the second position. At this time, the waistband pressing plate 21 is located in the sewing unit 4 and just drives the waistband to the designated sewing working position.

[0092] Embodiment 2:

[0093] See also Figure 7 and Figure 8 , is a schematic diagram of the structure of the first embodiment of the automatic material transfer and connection device. Compared with the second embodiment, a different automatic connection component 23 is used in the material pressing mechanism 2, and the rest of the parts are basically the same. In this embodiment, one of the upper connection structure and the lower connection structure of the automatic connection component 23 includes a locking block 233, and the other includes an insertion rod 236 and a locking drive unit that drives the insertion rod 236 to move. Specifically, the lower connection structure includes a plurality of locking blocks 233, which are fixedly arranged on the upper surface of the lower pressing plate 22. The upper connection structure includes a plurality of locking drives. The locking drive unit adopts a locking cylinder 234, which is fixedly installed on the upper pressing plate 24 through a cylinder connector 235. The locking drive unit can also adopt other structures with driving functions. The locking cylinders 234 are connected to an insertion rod 236 to drive the insertion rod 236 to move linearly and correspond to a locking block 233 respectively. The electronic control system is connected to the locking cylinder 234 for control. The material pressing drive assembly 25 drives the upper pressing plate 24 to move linearly to approach or separate from the lower pressing plate 22. When the upper pressing plate 24 and the lower pressing plate 22 are close to each other and abut against each other, the first wedge-shaped positioning block 26 is inserted into the corresponding first wedge-shaped groove, and the relative position of the upper pressing plate 24 and the lower pressing plate 22 is in a connectable state. At this time, the insertion rod 236 on the locking cylinder 234 is aligned with the corresponding insertion hole of the locking block 233, and then the locking cylinder 234 drives the insertion rod 236 to extend and insert into the insertion hole of the locking block 233, so that the connection can be established, so that the upper pressing plate 24 and the lower pressing plate 22 are automatically connected. When the connection needs to be released, the locking cylinder 234 is controlled to drive the insertion rod 236 to retract and pull out the insertion hole of the locking block 233.

[0094] In other embodiments, the automatic connection component 23 in the pressing mechanism 2 may also adopt other existing suitable structures, as long as it can realize the function of automatically connecting or disconnecting the upper pressing plate 24 and the lower pressing plate 22 .

[0095] The present invention also provides a sewing device for sewing waistband, see Figure 1 , including a sewing unit 4, and also including the above-mentioned automatic material moving and connecting device, through which the waistband is automatically driven into the sewing unit 4 for sewing work, and the sewn waistband is automatically moved to leave the sewing unit 4.

[0096] See also Figure 1 and Figure 6 In this embodiment, as a preferred design, the sewing unit 4 includes a sewing machine 41 and a pressing frame 42. The sewing machine 41 can be a pattern machine, a lockstitch machine, and other types of machines. The pressing frame 42 is installed on the sewing machine 41. The sewing machine 41 is provided with a corresponding driving mechanism, which can drive the pressing frame 42 to move up and down. When the automatic material transfer connection device drives the waistband to enter the sewing unit 4 and is located in the working position, the lower pressing plate 22 is located below the pressing frame 42. After the upper pressing plate 24 is separated from the lower pressing plate 22 and leaves the sewing unit 4, the pressing frame 42 moves down and presses on the lower pressing plate 22, so that the waistband pressing plate 21 stably presses the waistband in the sewing machine for sewing. The shape of the pressing frame 42 can be set according to the actual sewing needs, and it can press the waistband pressing plate 21 without affecting the sewing line. Preferably, the sewing machine 41 can also drive the pressing plate to rotate around the vertical Z axis and has an appropriate displacement range in the horizontal direction to adjust the angle and horizontal position of the pressing frame 42 as needed to facilitate sewing work.

[0097] See also Figure 1 , Figure 2 and Figure 6 In this embodiment, as a preferred design, at least two second wedge-shaped positioning blocks 27 extending in a straight line and perpendicular to each other are provided on the upper surface of the lower pressing plate 22, one of the first wedge-shaped positioning blocks 26 extending in a straight line along the X direction, and the other extending in a straight line along the Y direction. Correspondingly, at least two second wedge-shaped grooves extending in a straight line and perpendicular to each other are provided on the bottom surface of the lower pressing frame 42, extending in the X direction and the Y direction respectively, and keeping a one-to-one correspondence with the two second wedge-shaped positioning blocks 27, and the cross-section of the second wedge-shaped groove is also a trapezoid. When the lower pressing plate 22 and the waist pressing plate 21 move to the bottom of the pressing frame 42, the corresponding second wedge-shaped positioning blocks 27 and the second wedge-shaped grooves are kept relatively aligned, and then the pressing frame 42 moves down and presses on the lower pressing plate 22, and the second wedge-shaped positioning blocks 27 are inserted into the second wedge-shaped grooves. The structure and working principle of the second wedge-shaped positioning block 27 and the second wedge-shaped groove are basically the same as the first wedge-shaped positioning block 26 and the first wedge-shaped groove in the pressing mechanism 2, so it can also be set to other suitable forms with reference to the upper positioning structure and the lower positioning structure.

[0098] See also Figure 1 , Figure 2 and Figure 6 In this embodiment, as a preferred design, the sewing unit 4 also includes a table 43, a bearing plate 44, a height adjustment bolt 45, a fixing bolt 46 and a height adjustment plate 47. The sewing machine 41 is arranged on the table 43, the table 43 is placed on the bearing plate 44, and the bottom of the front and rear sides of the bearing plate 44 are padded with height adjustment plates 47. The table 43 is provided with a plurality of connecting through holes, and the fixing bolts 46 are passed through the connecting through holes and screwed to the bearing plate 44 to fix the table 43. The hole diameter of the connecting through hole is larger than the outer diameter of the fixing bolt 46. When the fixing bolt 46 is loosened, the table 43 can be adjusted in the horizontal X and Y directions relative to the bearing plate 44 through the connecting through holes. A plurality of height adjustment bolts 45 are respectively arranged at the front and rear of the table 43. The height adjustment bolts 45 are screwed to the bearing plate 44, and the lower ends thereof are against the height adjustment plate 47. By rotating the height adjustment bolts 45, the height and inclination angle of the bearing plate 44 can be adjusted. By adjusting the position and angle of the table 43, the position and angle of the sewing machine 41 can be adjusted, making it more flexible and convenient to use.

[0099] The present invention also provides a sewing method for waistband sewing, which is performed using the above-mentioned sewing equipment and comprises the following steps:

[0100] S1. In the initial state, the lower pressing plate 22 of the pressing mechanism 2 in the automatic material transfer and connection device is fixedly connected with the upper pressing plate 24 through the automatic connection component 23; at this time, the pressing mechanism 2 is generally located in the middle position of the linear guide rail 32 of the material feeding and discharging moving mechanism 3, and maintains an appropriate distance from the sewing unit 4 and the waistband placement position.

[0101] S2. A waistband placement position is provided on the waistband entry and exit path surface of the working platform 1, and the folded waistband is placed in the waistband placement position.

[0102] S3, the material inlet and outlet moving mechanism 3 and the material pressing driving assembly 25 of the automatic material moving connection device are actuated to drive the upper pressing plate 24 to move, so that the waistband pressing plate 21 presses the folded waistband. Specifically, the material inlet and outlet moving mechanism 3 first drives the upper pressing plate 24 to move toward the moving waistband placement position until the waistband pressing plate 21 is located above the waistband, and then the material pressing driving assembly 25 drives the upper pressing plate 24 to descend linearly, and the waistband pressing plate 21 presses the folded waistband.

[0103] S4, the feed-in and feed-out moving mechanism 3 is actuated to drive the upper pressing plate 24 to move along the feed-in and feed-out path, and the waistband pressing plate 21 moves with the waistband on the working platform 1 along the waistband feed-in and feed-out path surface to the specified position in the sewing unit 4, and presses down the lower pressing plate 22 through the pressing frame 42 of the sewing unit 4; then the automatic connecting component 23 of the pressing mechanism 2 releases the connection between the upper pressing plate 24 and the lower pressing plate 22, the pressing drive component 25 is actuated and the feed-in and feed-out moving mechanism 3 is actuated to drive the upper pressing plate 24 to separate from the lower pressing plate 22 and leave the sewing unit 4; specifically, after releasing the connection between the upper pressing plate 24 and the lower pressing plate 22, the pressing drive component 25 first drives the upper pressing plate 24 to rise, and then the feed-in and feed-out moving mechanism 3 drives the upper pressing plate 24 to move along the feed-in and feed-out path and return to leave the sewing unit 4.

[0104] S5, sewing unit 4 performs waistband sewing work;

[0105] S6. After the waistband is sewn, the material feeding and discharging moving mechanism 3 and the material pressing driving assembly 25 are activated to drive the upper pressing plate 24 to enter the sewing unit 4 and be in a connectable position with the lower pressing plate 22, and the automatic connecting assembly 23 is activated to connect the upper pressing plate 24 and the lower pressing plate 22, and the waistband pressing plate 21 presses the folded waistband; specifically, the material feeding and discharging moving mechanism 3 first drives the upper pressing plate 24 to move along the material feeding and discharging path back to the top of the upper pressing plate 24, the electromagnet 231 and the magnetic suction sheet 232 are aligned up and down, and the material pressing driving assembly 25 drives the upper pressing plate 24 to drop straight down to contact with the lower pressing plate 22, and the two are in a connectable position, at this time, the electromagnet 231 approaches and contacts the magnetic suction sheet 232, and then the electromagnet 231 is energized to attract the magnetic suction sheet 232, and the waistband pressing plate 21 presses the folded waistband.

[0106] S7, the material inlet and outlet moving mechanism 3 is activated, driving the upper pressing plate 24 to move along the material inlet and outlet path, and the waistband pressing plate 21 moves with the waistband on the working platform 1 along the waistband inlet and outlet path surface, leaving the sewing unit 4 and reaching the material receiving position; then the material pressing driving component 25 drives the upper pressing plate 24 to rise, and the waistband pressing plate 21 is separated from the waistband, and the waistband and trousers material can be removed from the working platform 1.

[0107] The automatic material transfer and connection device, sewing equipment and method of the present invention have the following beneficial effects:

[0108] 1. The automatic material transfer and connection device can automatically bring the folded waistband into the sewing unit 4, and can also press the waistband to keep it stable during the sewing process without affecting the sewing work. After the sewing is completed, the waistband is automatically taken out, realizing the automatic connection between the material collection and release and the sewing work, thereby improving the sewing efficiency.

[0109] 2. During the operation of the pressing mechanism 2, the upper pressing plate 24 and the lower pressing plate 22 can be automatically and quickly connected or disconnected through the automatic connecting component 23, and the horizontal positioning is achieved through the docking positioning component composed of the first wedge-shaped positioning block 26 and the first wedge-shaped groove, thereby avoiding the problem of misalignment and shaking of the waistband pressing plate 21 during the movement of the feeding and discharging moving mechanism 3.

[0110] 3. When sewing, the sewing unit 4 of the sewing equipment presses the lower pressing plate 22 through the pressing frame 42 to ensure that the waistband position is stable and does not affect the sewing work. The pressing frame 42 and the lower pressing plate 22 are linearly positioned in the horizontal direction through the second wedge-shaped positioning block 27 and the second wedge-shaped groove, and the operation is stable and reliable.

[0111] 4. The sewing machine 41 in the sewing unit 4 can adopt various models and can realize position adjustment, which has good flexibility.

[0112] In summary, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0113] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An automatic material transfer and connection device for waistband sewing, used for moving the waistband into the sewing unit (4), characterized in that: The automatic material transfer and connection device comprises a working platform (1), a material pressing mechanism (2), a material inlet and outlet moving mechanism (3) and an electric control system. The working platform (1) is provided with a waistband inlet and outlet path surface for placing and moving the waistband, and the waistband can enter the sewing unit (4) when moving on the waistband inlet and outlet path surface. The material pressing mechanism (2) comprises a waistband pressing plate (21), a lower pressing plate (22), an automatic connection component (23), an upper pressing plate (24) and a material pressing driving component (25). The waistband pressing plate (21) is provided with a plurality of sewing working grooves (211) for sewing the waistband. The waistband pressing plate (21) The lower pressing plate (22) is fixedly connected to the upper pressing plate (24) through an automatic connection component (23). The automatic connection component (23) includes a lower connection structure arranged on the lower pressing plate (22), an upper connection structure arranged on the upper pressing plate (24) and matched with the lower connection structure. The upper connection structure and the lower connection structure can be connected or disconnected. The material pressing drive component (25) is connected to the upper pressing plate (24) and can drive the upper pressing plate (24). The waistband pressing plate (21) can be lifted and lowered, and can press the waistband on the waistband placed on the waistband inlet and outlet path surface; the inlet and outlet moving mechanism (3) can drive the upper pressing plate (24) to move along the inlet and outlet path, and when the upper pressing plate (24) moves along the inlet and outlet path, the waistband pressing plate (21) pressing the waistband can move along the waistband inlet and outlet path surface with the waistband; The electric control system is respectively connected to the automatic connection component (23), the material pressing drive component (25) and the material inlet and outlet moving mechanism (3).

2. The automatic material transfer and connection device according to claim 1 is characterized in that: One of the upper connection structure and the lower connection structure of the automatic connection component (23) comprises an electromagnet (231), and the other comprises a magnetic attraction sheet (232); the electric control system is controllably connected to the electromagnet (231) and can control the on and off of the electromagnet (231).

3. The automatic material transfer and connection device according to claim 1 is characterized in that: One of the upper connection structure and the lower connection structure of the automatic connection component (23) comprises a locking block (233), and the other comprises an insertion rod (236) and a locking drive unit for driving the insertion rod (236) to move. A plug hole is provided in the locking block (233). When the insertion rod (236) is inserted into the plug hole of the locking block (233), the upper connection structure and the lower connection structure are connected. When the insertion rod (236) is pulled out of the plug hole, the upper connection structure and the lower connection structure are disconnected. The electric control system is connected to the locking drive unit for control.

4. The automatic material transfer and connection device according to any one of claims 1 to 3, characterized in that: The pressing mechanism (2) also includes a docking positioning assembly, which includes an upper positioning structure arranged on the upper pressing plate (24) and a lower positioning structure arranged on the lower pressing plate (22). When the upper connecting structure on the upper pressing plate (24) is connected to the lower connecting structure on the lower pressing plate (22), the upper positioning structure cooperates with the lower positioning structure and limits the relative position of the upper pressing plate (24) and the lower pressing plate (22) in the horizontal direction.

5. The automatic material transfer and connection device according to claim 4 is characterized in that: One of the upper positioning structure and the lower positioning structure includes a plurality of first wedge-shaped positioning blocks (256), and the other includes a plurality of first wedge-shaped grooves corresponding to the first wedge-shaped positioning blocks (256). The corresponding first wedge-shaped positioning blocks (256) and the first wedge-shaped positioning grooves are adapted in shape. When the first wedge-shaped positioning block (256) is arranged on the lower pressure plate (22), its shape gradually becomes larger from top to bottom, and when it is arranged on the upper pressure plate (24), its shape gradually becomes smaller from top to bottom. When the upper connecting structure on the upper pressure plate (24) and the lower connecting structure on the lower pressure plate (22) are kept relative to each other, the corresponding first wedge-shaped positioning block (256) and the first wedge-shaped groove are kept aligned. When the upper connecting structure and the lower connecting structure are connected, the first wedge-shaped positioning block (256) is inserted into the first wedge-shaped groove, and the sides of the two are abutted against each other.

6. The automatic material transfer and connection device according to claim 5 is characterized in that: There are at least two first wedge-shaped positioning blocks (256), and the two first wedge-shaped positioning blocks (256) extend along a straight line and are perpendicular to each other. The cross section of the first wedge-shaped positioning block (256) perpendicular to the straight line extension direction thereof is a trapezoid.

7. The automatic material transfer and connection device according to claim 1 is characterized in that: The material pressing driving assembly (25) drives the upper pressing plate (24) to move up and down in a straight line, and when the lower pressing plate (22) is fixedly connected to the upper pressing plate (24), the waistband pressing plate (21) is located above the waistband inlet and outlet path surface.

8. A sewing device for waistband sewing, comprising a sewing unit (4), characterized in that: It also includes an automatic material transfer and connection device as described in any one of claims 1 to 7.

9. The sewing device according to claim 8, characterized in that: The sewing unit (4) is provided with a lifting and lowering pressing frame (42), and when the automatic material transfer and connection device drives the waistband to enter the sewing unit (4), the lower pressing plate (22) is located below the pressing frame (42).

10. A sewing method for waistband sewing, characterized in that: The method is carried out using the sewing device as claimed in claim 8, comprising the following steps: S1, in the initial state, the lower pressing plate (22) of the pressing mechanism (2) in the automatic material transfer and connection device is fixedly connected to the upper pressing plate (24) through the automatic connection component (23); S2, a waistband entry and exit path surface of the working platform (1) is provided with a waistband placement position, and the folded waistband is placed in the waistband placement position; S3, the material inlet and outlet moving mechanism (3) and the material pressing driving assembly (25) of the automatic material moving and connecting device are activated, driving the upper pressing plate (24) to move, so that the waistband pressing plate (21) presses the folded waistband; S4, the material inlet and outlet moving mechanism (3) is activated to drive the upper pressing plate (24) to move along the material inlet and outlet path, and the waistband pressing plate (21) moves the waistband along the waistband inlet and outlet path surface on the working platform (1) to a designated position in the sewing unit (4); then the automatic connection component (23) of the material pressing mechanism (2) releases the connection between the upper pressing plate (24) and the lower pressing plate (22), the material pressing drive component (25) is activated and the material inlet and outlet moving mechanism (3) is activated, driving the upper pressing plate (24) to separate from the lower pressing plate (22) and leave the sewing unit (4); S5, the sewing unit (4) performs waistband sewing; S6, after the waistband is sewn, the material feeding and discharging moving mechanism (3) and the material pressing driving assembly (25) are activated to drive the upper pressing plate (24) to enter the sewing unit (4) and to be in a connectable position with the lower pressing plate (22), the automatic connecting assembly (23) is activated to connect the upper pressing plate (24) and the lower pressing plate (22), and the waistband pressing plate (21) presses the folded waistband; S7, the material inlet and outlet moving mechanism (3) is activated, driving the upper pressing plate (24) to move along the material inlet and outlet path, and the waistband pressing plate (21) moves along the waistband inlet and outlet path surface with the waistband on the working platform (1), leaves the sewing unit (4) and reaches the material receiving position; then the material pressing drive assembly (25) drives the upper pressing plate (24) to rise, and the waistband pressing plate (21) is separated from the waistband.

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