Waistband folding apparatus and method

Abstract

The application provides a waistband folding device and a folding method. The device comprises a frame body, a clamping mechanism, a material supporting mechanism and a material folding mechanism arranged on the frame body. The material supporting mechanism comprises a material penetrating plate for penetrating into the inside of the waistband, a material penetrating driving assembly connected with the material penetrating driving assembly to drive the material penetrating plate to move linearly, a material supporting assembly arranged on the material penetrating plate, the material supporting assembly having two material supporting parts located on the upper and lower sides of the material penetrating plate, and a material supporting driving assembly connected with the material supporting assembly to drive the material supporting assembly to act so that the rear end of the material supporting part is raised relative to the material penetrating plate. The material folding mechanism has two material folding parts located on the upper and lower sides of the material penetrating plate respectively. The waistband of the application can be directly sewn to the bottom and then folded, and the processing is simpler, faster and more beautiful after folding, and the sewing trace is smoother and more complete.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waistband processing equipment, in particular, relates to a waistband folding device and a folding method. BACKGROUND

[0002] The waist of trousers is usually formed by folding and sewing two layers of cloth, and the producer usually first sews the two layers of cloth together, then does not sew the cloth at the end, reserves a cloth folding area, and then sews the cloth after the folding is completed. For example, a waistband folding device in Chinese patent application No. 202021586875.1 has the following disadvantages: when the device is used to sew the waistband, the sewing needs to be completed in two steps, the folding operation needs to be inserted in between, the efficiency is low, and the sewing marks are not coherent, and the folding and sewing at the end of the waistband are not beautiful. SUMMARY

[0003] Therefore, the first object of the present application is to provide a waistband folding device that uses a material supporting piece to support a waistband that is directly sewn to the end to solve the problems of low efficiency and unattractive appearance after sewing of the prior art.

[0004] To achieve the above-mentioned object, the technical solution of the present application is as follows:

[0005] A waistband folding device, comprising a frame body, and a clamping mechanism, a material supporting mechanism and a material folding mechanism arranged on the frame body; wherein,

[0006] The material supporting mechanism comprises:

[0007] A material penetrating plate for penetrating into the inside of the waistband;

[0008] A material penetrating drive assembly connected with the material penetrating drive assembly to drive the material penetrating plate to move linearly;

[0009] A material supporting assembly arranged on the material penetrating plate, the material supporting assembly having two material supporting parts located on the upper and lower sides of the material penetrating plate; the material supporting parts are used to support the inner cavity of the waistband after penetrating into the waistband;

[0010] And a material supporting drive assembly connected with the material supporting assembly to drive the material supporting assembly to act so that the rear end of the material supporting part is raised relative to the material penetrating plate;

[0011] The clamping mechanism comprises two main clamping assemblies, and the two main clamping assemblies are respectively located on the left and right sides of the material penetrating plate;

[0012] The material folding mechanism has two material folding parts, and the two material folding parts are respectively located on the upper and lower sides of the material penetrating plate; the material folding mechanism is used to drive the material folding parts to penetrate into the waistband from the part of the waistband that is supported to realize the folding of the waistband.

[0013] Preferably, the supporting assembly comprises a supporting driving rod and two supporting plates; the supporting driving rod is connected with the supporting driving assembly; one of the supporting plates is located on the upper side of the penetrating plate and is fixed at the front end of the penetrating plate; the other supporting plate is located on the lower side of the penetrating plate and is fixed at the front end of the penetrating plate; the supporting driving rod is slidably arranged on the penetrating plate and is provided with two lifting portions at the end thereof facing the two supporting plates, the lifting portions are used for gradually lifting the rear end of the supporting plate upward to make the rear end of the supporting plate upwardly tilt when the supporting driving rod moves toward the supporting plate.

[0014] Preferably, the supporting driving rod comprises an upper rod and a lower rod, the upper rod is slidably arranged on the upper side of the penetrating plate, the lower rod is slidably arranged on the lower side of the penetrating plate, and the upper rod and the lower rod are fixedly connected; the lower rod is connected with the supporting driving assembly; the upper rod and the lower rod are both provided with the lifting portions at the end thereof facing the supporting plate.

[0015] Preferably, the penetrating plate is provided with lifting portions on the left and right sides thereof, the lifting portions are used for lifting the opening sides of the waistband inward when the penetrating plate moves toward the inside of the waistband.

[0016] Preferably, the penetrating plate comprises a main plate body and a penetrating portion; the penetrating portion is installed at the front end of the main plate body and is used for penetrating into the waistband; the supporting plate is installed on the penetrating portion; the rear section of the penetrating portion is inwardly contracted on both sides to form a recessed portion, and the left and right sides of the front end of the main plate body and the recessed portion are connected to form the lifting portions.

[0017] Preferably, the lifting portions are in a stepped structure and form a first lifting portion and a second lifting portion.

[0018] Preferably, the folding mechanism comprises:

[0019] a front and back moving platform;

[0020] two longitudinal moving platforms, both of which are installed on the front and back moving platform;

[0021] two folding plates, which are respectively located on the upper and lower sides of the penetrating plate, and one of the folding plates is installed on one of the longitudinal moving platforms, and the other folding plate is installed on the other longitudinal moving platform;

[0022] wherein, the longitudinal moving platform is used for driving the folding plate to move longitudinally, and the front and back moving platform is used for driving the folding plate to move forward and backward.

[0023] Preferably, it further comprises an auxiliary clamping assembly, the auxiliary clamping assembly is connected with the penetrating driving assembly to be able to move synchronously with the penetrating plate, and the auxiliary clamping assembly is used for clamping the trousers body which is sewn with the waistband.

[0024] The second object of the present application is to provide a waistband folding method, which is implemented based on the above-mentioned waistband folding device and can.

[0025] In order to achieve the above-mentioned objects, the technical scheme of the present application is as follows:

[0026] A waistband folding method, comprising:

[0027] Controlling the feed driving assembly to drive the feed plate and the auxiliary clamping assembly to move forward to a first position synchronously;

[0028] Sleeving one end of the un-edged waistband into the feed plate so that the front part of the feed plate is inserted into the waistband; at this time, the material supporting part also enters the inside of the waistband;

[0029] Controlling the main clamping assemblies on the left and right sides of the feed plate to clamp the two sides of the waistband;

[0030] Controlling the feed driving assembly to drive the feed plate and the auxiliary clamping assembly to move backward to a second position synchronously;

[0031] Controlling the auxiliary clamping assembly to clamp the trousers body which is sewn together with the waistband;

[0032] Controlling the material supporting driving assembly to drive the material supporting assembly to act, so as to drive the rear end of the material supporting part on the upper and lower sides of the feed plate to be raised, and the corresponding part of the waistband is raised after the material supporting part is raised;

[0033] Controlling the material folding mechanism to drive the two material folding parts to be inserted into the waistband from the part of the waistband which is raised, so as to realize the folding of the waistband;

[0034] Controlling the auxiliary clamping assembly to release the trousers body;

[0035] Controlling the feed driving assembly to drive the feed plate to move forward to a third position, so that the material supporting parts on the two sides of the feed plate top the two sides of the opening of the waistband inward;

[0036] Controlling the material supporting driving assembly to drive the material supporting assembly to reset;

[0037] Controlling the feed driving assembly to drive the feed plate to return to the first position;

[0038] Controlling the auxiliary clamping assembly to clamp the trousers body again;

[0039] Controlling the material folding mechanism to drive the two material folding parts to be extracted from the waistband, and then to move to the top of the opening of the waistband and press down at least once;

[0040] Controlling the material folding mechanism to drive the two material folding parts to reset;

[0041] Controlling the two main clamping assemblies to release the waistband;

[0042] The control of the driving assembly drives the driving plate and the auxiliary clamping assembly to move forward to the first position synchronously.

[0043] The present application has the following prominent and beneficial technical effects compared with the prior art:

[0044] 1、The convex part of the supporting plate can support the inner cavity of the waistband, so that the waistband can be effectively folded. After the waistband is supported, the folding effect is better and more flat. During sewing, the waistband does not need to reserve a cloth folding area as in the conventional waistband folding process, and the cloth is folded first and then sewn. By using the scheme of the present application, the waistband can be directly sewn to the bottom and then folded, which is simpler and faster, and the folded waistband is more beautiful and the sewing marks are smoother and more complete.

[0045] 2、When the waistband is sleeved on the driving plate, the driving plate can support the waistband and give the waistband a shaping and limiting effect, and the rear end of the supporting part can support the inner cavity of the waistband and keep one end of the waistband in a supporting state.

[0046] 3、The present application folds the waistband at one end by two folding plates at the same time, which ensures the synchronous folding of the upper and lower sides of the waistband and better folding effect.

[0047] 4、The present application sets a material pushing part on both sides of the driving plate, so that the two sides of the opening of the folded waistband can form a 90-degree angle, meeting the process requirements. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is the overall structure diagram of the waistband folding device in the embodiment;

[0049] Figure 2 It is a structure diagram of the supporting mechanism;

[0050] Figure 3 It is a structure diagram of the supporting part;

[0051] Figure 4 It is a structure diagram of the folding mechanism;

[0052] Figure 5 It is a structure diagram of the clamping mechanism.

[0053] Reference numerals: 1, frame; 2, clamping mechanism; 21, main clamping assembly; 211, first clamping drive source; 212, first clamping jaw; 22, auxiliary clamping assembly; 221, second clamping drive source; 222, second clamping jaw; 223, connecting plate; 23, adjusting assembly; 231, guide block; 232, connecting block; 233, first adjusting hole; 234, second adjusting hole; 3, supporting mechanism; 31, feeding drive assembly; 311, first drive source; 312, first mounting frame; 313, feeding drive assembly; 32, feeding plate; 321, feeding plate; 322, main body; 3221. Slide; 3222. Upper plate; 3223. Middle plate; 3224. Lower plate; 3225. Material threading part; 3226. Limiting groove; 323. Material supporting drive rod; 3231. Upper rod; 3232. Middle rod; 3233. Lower rod; 3234. Lifting part; 3235. Lifting part; 324. Material lifting part; 4. Material folding mechanism; 41. Front and rear moving platform; 411. Second mounting frame; 42. Longitudinal moving platform; 421. Vertical driving source; 422. Connecting frame; 43. Material folding plate; 431. Connecting part; 432. Material folding part; 5. Shielding plate; 6. Transverse driving source. DETAILED DESCRIPTION

[0054] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0055] Example 1

[0056] Reference Figure 1 This embodiment aims to provide a trouser waist hemming device, including a frame 1, and a clamping mechanism 2, a supporting mechanism 3, an auxiliary clamping assembly 22 and a folding mechanism 4 arranged on the frame 1.

[0057] Reference Figure 1 The clamping mechanism 2 includes two main clamping assemblies 21 and a first clamping drive source 211 for driving the main clamping assemblies 21. The two main clamping assemblies 21 are respectively located on the left and right sides of the feed plate 32, and thus there are two first clamping drive sources 211. Specifically, the main clamping assembly 21 includes two first clamping jaws 212, which are arranged in an upper and lower position and connected to the first clamping drive source 211 on the corresponding side. The two first clamping jaws 212 form a clamping opening. The two main clamping assemblies 21 can clamp and fix the two sides of the trouser waistband.

[0058] The two first clamping driving sources 211 are mounted on the adjusting assembly 23, which comprises a guide block 231, a connecting block 232 and a knob. The guide block 231 extends laterally on the inner side of the frame body 1. The connecting block 232 is slidingly arranged on the guide block 231 and connected with the main clamping assembly 21. The first adjusting hole 233 and the second adjusting hole 234 are respectively formed in the frame body 1 and the connecting block 232, so that the knob is connected with the main clamping assembly 21 by simultaneously penetrating through the first adjusting hole 233 and the second adjusting hole 234. The user only needs to rotate the knob to drive the main clamping assembly 21 to move left and right to adjust the position of the main clamping assembly 21. The structure is simple, the operation is convenient, and the user can also adjust the position of the main clamping assembly 21 according to different waistbands and production requirements to achieve the adaptation effect.

[0059] With reference to Figures 2-4 The supporting mechanism 3 comprises a feeding plate 32, a feeding driving assembly 31, a supporting assembly and a supporting driving assembly 313.

[0060] The feeding plate 32 is used for penetrating into the inside of the waistband and comprises a main plate body 322 and a feeding part 3225. The main plate body 322 is composed of three layers, i.e., an upper plate 3222, a middle plate 3223 and a lower plate 3224, which are fixed by bolts. The front end of the middle plate 3223 is integrally or separately provided with the feeding part 3225. The front end of the feeding part 3225 is lance-shaped to facilitate the penetration into the waistband. The rear section of the feeding part 3225 is inwardly contracted on both sides to form a recessed part. In this embodiment, the recessed part is arc-shaped. The top end of the main plate body 322 on both sides and the recessed part form a top part 324. The top part 324 is used for inwardly pushing the two sides of the opening of the waistband when the feeding plate 32 moves towards the inside of the waistband. More specifically, the top part 324 is in a stepped structure, forming a first top part and a second top part. The second top part is located at the rear and is wider. The worker can adjust the distance of the feeding plate 32 into the inside of the waistband according to the parameters such as the elasticity of the waistband fabric to push the two sides of the opening of the waistband inwardly through the first top part or the second top part.

[0061] The feeding driving assembly 31 is connected with the feeding driving assembly 31 to drive the feeding plate 32 to move linearly. Specifically, the feeding driving assembly 31 comprises a first driving source 311, a lead screw sliding table and a first mounting frame 312. The first driving source 311 is arranged on the frame body 1. The first mounting frame 312 is arranged on the frame body 1 through a sliding guide rail. The lead screw sliding table is arranged on the frame body 1 and is drivingly connected with the first driving source 311 through a synchronous belt transmission structure. The first mounting frame 312 is connected with the lead screw sliding table through a connecting plate, so as to be synchronously linearly moved with the lead screw sliding table driven by the first driving source 311. In addition, the rear end of the feeding plate 32 is fixedly arranged on the first mounting frame 312 and is synchronously linearly moved with the first mounting frame 312.

[0062] The feeding plate 32 includes an upper plate 3222 , a middle plate 3223 and a lower plate 3224 arranged in sequence. The middle plate 3223 extends outward to form a feeding portion 3225 . The supporting plate 321 is arranged on the feeding head and the outer end is fixed.

[0063] The support assembly is mounted on the feed plate 32 and includes a support drive rod 323 and two feed plates 321. The support drive rod 323 comprises an upper rod 3231, a middle rod 3232, and a lower rod 3233, all mounted vertically and secured by bolts. Slide slots 3221 are defined on both the upper plate 3222 and the lower plate 3224, with the upper rod 3231 and lower rod 3233 positioned within the respective slots 3221. The middle plate 3223 is provided with a limit slot 3226, within which the middle rod 3232 is positioned. The limit slot 3226 is narrower than the guide slot. This arrangement allows the support drive rod 323 to slide along the feed plate 32 as a whole.

[0064] The upper rod 3231 and the lower rod 3233 are both provided with a lifting portion 3235 at one end facing the supporting plate 321, and the lifting portion 3235 is a convex structure.

[0065] The lifting portion 3235 is used to gradually push the rear end of the supporting plate 321 upwards when the supporting driving rod 323 moves toward the supporting plate 321 so that the rear end of the supporting plate 321 is tilted.

[0066] Furthermore, the lower rod 3233 is connected to the support drive assembly 313; the support plate 321 is mounted on the feeder portion 3225; the support drive rod 323 is connected to the support drive assembly 313; one support plate 321 is located above the feeder plate 32, with its front end fixed to the feeder plate 32; the other support plate 321 is located below the feeder plate 32, with its front end fixed to the feeder plate 32. The support drive assembly 313 uses a pneumatic cylinder, which is connected to the lower feeder plate 32 via a connecting plate, thereby driving both feeder plates 32 to move linearly simultaneously.

[0067] Therefore, after the support plate 321 follows the threading portion 3225 into the inside of the waistband, the support plate 321 tilts up to support the inner cavity of the waistband.

[0068] Reference Figure 1 、 Figure 2 The auxiliary clamping assembly 22 is connected to the threading drive assembly 31 and moves synchronously with the threading plate 32. The auxiliary clamping assembly 22 is used to clamp the trouser body sewn together with the waistband. Specifically, the auxiliary clamping assembly 22 includes a second clamping drive source fixed to the frame 1 via a connecting plate 223, and a second clamping jaw 222 connected to the second clamping drive source. The clamping drive source drives the second clamping jaw 222 to secure the trouser body connected to the waistband. This stabilizes the trouser body and prevents the trouser body from interfering with the waistband processing.

[0069] Referring to Figure 2 、 Figure 4 The folding mechanism 4 comprises a front-back moving platform 41, two longitudinal moving platforms 42 and two folding plates 43.

[0070] The front-back moving platform 41 adopts a slide table structure driven by a cylinder. The second mounting frame 411 is arranged on the front-back moving platform 41, and the two longitudinal moving platforms 42 are mounted on the second mounting frame 411, so as to be driven by the front-back moving platform 41 to move forward and backward. The longitudinal moving platform 42 also adopts a slide table structure driven by a cylinder.

[0071] The two folding plates 43 are respectively arranged on the upper and lower sides of the feeding plate 32, and are L-shaped, comprising a connecting part 431 and a folding part 432, and the connecting part 431 is connected with the longitudinal moving platform 42. The two folding plates 43 are respectively mounted on one of the longitudinal moving platforms 42, so as to be driven by the corresponding longitudinal moving platform 42 to move longitudinally.

[0072] In combination with Figure 2 and Figure 5 The shielding plate 5 is further arranged on the frame body 1, the first clamping jaw 212 and the second clamping jaw 222 extend to the outside of the shielding plate 5 through the shielding plate 5, and the fixed positions of the first clamping jaw 212 and the second clamping jaw 222 are both away from the shielding plate 5. After the trousers body moves a certain distance, the trousers body will lean on the shielding plate 5. The shielding plate 5 can limit the movement of the trousers body, and further limit the position of the waistband, so that the waistband can be processed in a stable position range, and the accuracy of the waistband processing is ensured.

[0073] In combination with Figure 1 and Figure 2 The horizontal moving driving source 6 can be further arranged below the frame body 1, and the horizontal moving driving source 6 is mounted on another rack (not shown) and can drive the frame body 1 and each mechanism on the frame body 1 to move to one side of the sewing device, so that the sewing device can perform the next processing operation on the waistband.

[0074] In the first embodiment, the waistband folding method comprises the following steps.

[0075] On the basis of the first embodiment, the waistband folding method further comprises the following steps.

[0076] S01, controlling the feeding driving assembly 31 to drive the feeding plate 32 and the auxiliary clamping assembly 22 to move forward synchronously to a first position;

[0077] At this time, the feeding part 3225 at the front of the feeding plate 32 has a relatively large length extending out of the shielding plate 5, and thus more part of the waistband can be penetrated, so that the waistband is less likely to shake left and right.

[0078] S02, one end of the un-edged waistband is sleeved on the feeding plate 32, so that the front section of the feeding plate 32 is inserted into the waistband; at this time, the supporting part also enters the inside of the waistband.

[0079] S03, the main clamping assembly on both sides of the feeding plate 32 is controlled to clamp the two sides of the waistband.

[0080] S04, the feeding driving assembly 31 is controlled to drive the feeding plate 32 and the auxiliary clamping assembly 22 to move synchronously to the second position;

[0081] At this time, the position of the supporting part can be close to the position directly below the folding plate 43.

[0082] S05, the auxiliary clamping assembly 22 is controlled to clamp the trousers body sewn with the waistband;

[0083] The trousers body is clamped together by the auxiliary clamping assembly 22, which can further prevent the waistband from moving relative to the feeding plate 32.

[0084] S06, the supporting driving assembly 313 is controlled to drive the supporting assembly to act, so that the rear end of the supporting part on both sides of the feeding plate 32 is raised, and the corresponding part of the waistband is raised after the supporting part is raised;

[0085] After the corresponding part of the waistband is raised, a raised part is formed for the insertion of the folding plate 43.

[0086] S07, the folding mechanism 4 is controlled to drive the two folding parts 432 to be inserted into the waistband from the part of the waistband being raised to realize the edge folding of the waistband;

[0087] In this step, the folding plate 43 can be driven to be inserted repeatedly twice or even more times to ensure the edge folding effect.

[0088] S08, the auxiliary clamping assembly 22 is controlled to release the trousers body.

[0089] S09, the feeding driving assembly 31 is controlled to drive the feeding plate 32 to move forward to the third position, so that the top part 324 on both sides of the feeding plate 32 inwardly pushes the two sides of the opening of the waistband;

[0090] The opening on one end of the waistband after edge folding can be squeezed to be close to 90 degrees by the top part 324, so as to avoid the part of the fabric after edge folding protruding from the opening and affecting the overall process.

[0091] S10, the supporting driving assembly 313 is controlled to drive the supporting assembly to reset.

[0092] S11, the feeding driving assembly 31 is controlled to drive the feeding plate 32 to return to the first position.

[0093] S12, control the auxiliary clamping assembly 22 to clamp the pant body again.

[0094] S13, control the folding mechanism 4 to drive the two folding parts 432 to be extracted from the waistband, and then to move above the waistband opening, and then to press down at least once.

[0095] Through this step, the one end after the edge folding can be flattened, and the operation steps of the workers can be reduced.

[0096] S14, control the folding mechanism 4 to drive the two folding parts 432 to reset.

[0097] S15, control the two main clamping assemblies to release the waistband.

[0098] S16, control the driving assembly 31 to drive the penetrating plate 32 and the auxiliary clamping assembly 22 to move forward to the first position.

[0099] After step S16, the whole folding device is driven by the horizontal driving source 6 to horizontally move, so as to send the waistband to the sewing device of the next process for sewing.

[0100] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific embodiments, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A trouser waist hemming device, characterized in that: It comprises a frame (1), and a clamping mechanism (2), a material supporting mechanism (3) and a material folding mechanism (4) arranged on the frame (1); wherein, The supporting mechanism (3) comprises: A threading plate (32) for inserting into the waistband of pants; A material-piercing drive assembly (31), which is connected to the material-piercing drive assembly (31) to drive the material-piercing plate (32) to move linearly; A support assembly is provided on the material-piercing plate (32), and the support assembly has two support parts, which are located on the upper and lower sides of the material-piercing plate (32); the support parts are used to support the inner cavity of the trouser waist after entering the inside of the trouser waist; and a supporting drive assembly (313) connected to the supporting assembly and used to drive the supporting assembly to cause the rear end of the supporting portion to tilt relative to the feed plate (32); The clamping mechanism (2) comprises two main clamping assemblies (21), and the two main clamping assemblies (21) are respectively located on the left and right sides of the feed plate (32); The folding mechanism (4) has two folding parts (432), which are respectively located on the upper and lower sides of the material-threading plate (32). The folding mechanism (4) is used to drive the folding parts (432) to be inserted from the supported part of the waistband into the inside of the waistband to achieve the folding of the waistband.

2. The trouser waist hemming device according to claim 1, characterized in that: The supporting assembly comprises a supporting drive rod (323) and two supporting plates (321); the supporting drive rod (323) is connected to the supporting drive assembly (313); one of the supporting plates (321) is located on the upper side of the material-penetrating plate (32), and its front end is fixed to the material-penetrating plate (32); the other supporting plate (321) is located on the lower side of the material-penetrating plate (32), and its front end is fixed to the material-penetrating plate (32); the supporting drive rod (323) is slidably arranged on the material-penetrating plate (32), and two lifting parts are provided at one end facing the two supporting plates (321), and the lifting parts are used to gradually push the rear end of the supporting plate (321) upward when the supporting drive rod (323) moves toward the supporting plate (321) so that the rear end of the supporting plate (321) is tilted upward.

3. The trouser waist hemming device according to claim 2, characterized in that: The material supporting driving rod (323) comprises an upper rod (3231) and a lower rod (3233), wherein the upper rod (3231) is slidably arranged on the upper side of the material passing plate (32), and the lower rod (3233) is slidably arranged on the lower side of the material passing plate (32), and the upper rod (3231) and the lower rod (3233) are fixedly connected; the lower rod (3233) is connected to the material supporting driving assembly (313); and the upper rod (3231) and the lower rod (3233) are both provided with the lifting portion at one end facing the material supporting plate (321).

4. The trouser waist hemming device according to claim 2, characterized in that: The left and right sides of the threading plate (32) are formed with push-up parts (324), and the push-up parts (324) are used to push the two sides of the opening of the waistband inward when the threading plate (32) moves toward the inside of the waistband.

5. The trouser waist hemming device according to claim 4, characterized in that: The feeding plate (32) comprises a main body (322) and a feeding portion (3225); the feeding portion (3225) is mounted on the front end of the main body (322) and is used for inserting into the waistband of trousers; the supporting plate (321) is mounted on the feeding portion (3225); the two sides of the rear section of the feeding portion (3225) shrink inwards to form a concave portion, and the left and right sides of the front end of the main body (322) are connected to the concave portion to form the top feeding portion (324).

6. The trouser waist hemming device according to claim 5, characterized in that: The top material portion (324) has a stepped structure, forming a primary top material portion and a secondary top material portion.

7. The trouser waist hemming device according to claim 1, characterized in that: The material folding mechanism (4) comprises: a forward and backward moving platform (41); Two longitudinal movable platforms (42) are mounted on the front and rear movable platforms (41); Two folding plates (43) are respectively located on the upper and lower sides of the feed plate (32), and one of the folding plates (43) is installed on one of the longitudinal moving platforms (42), and the other folding plate (43) is installed on the other longitudinal moving platform (42); The longitudinal moving platform (42) is used to drive the folding plate (43) to move longitudinally, and the front-to-back moving platform (41) is used to drive the folding plate (43) to move front-to-back.

8. The trouser waist hemming device according to claim 4, characterized in that: The invention also comprises an auxiliary clamping assembly (22), which is connected to the material feeding drive assembly (31) so as to be able to move synchronously with the material feeding plate (32). The auxiliary clamping assembly (22) is used for clamping the trouser body sewn together with the trouser waist.

9. A trouser waist hemming method, implemented based on the trouser waist hemming device according to claim 8, characterized in that: The hemming method includes: Controlling the material-piercing driving assembly (31) to drive the material-piercing plate (32) and the auxiliary clamping assembly (22) to synchronously move forward to a first position; Put one end of the unsealed waistband onto the wear plate (32) so that the front portion of the wear plate (32) is inserted into the waistband; at this time, the support portion also enters the inside of the waistband; Controlling the main clamping components (21) located on the left and right sides of the threading plate (32) to clamp the two sides of the trouser waist; Controlling the material-piercing driving assembly (31) to drive the material-piercing plate (32) and the auxiliary clamping assembly (22) to synchronously move backward to a second position; Controlling the auxiliary clamping assembly (22) to clamp the trouser body sewn together with the trouser waist; Controlling the support drive assembly (313) to drive the support assembly to move, so as to drive the rear ends of the support parts located on the upper and lower sides of the threading plate (32) to tilt up, and after the support parts tilt up, the corresponding parts of the trouser waist are supported; The folding mechanism (4) is controlled to drive the two folding parts (432) to be inserted from the supported portion of the waistband into the interior of the waistband to achieve folding of the waistband; Controlling the auxiliary clamping assembly (22) to release the trousers body; Controlling the material feeding drive assembly (31) to drive the material feeding plate (32) to move forward to a third position, so that the material pushing portions (324) on both sides of the material feeding plate (32) push both sides of the opening of the trouser waist inward; Controlling the supporting material driving component (313) to drive the supporting material component to reset; Controlling the material-piercing driving assembly (31) to drive the material-piercing plate (32) to return to the first position; Controlling the auxiliary clamping assembly (22) to clamp the trouser body again; The folding mechanism (4) is controlled to drive the two folding parts (432) to be drawn out from the waistband, and then to move to the top of the waistband opening, and then to be pressed down at least once; controlling the folding mechanism (4) to drive the two folding parts (432) to reset; Controlling the two main clamping components (21) to release the waistband; The material-penetrating drive assembly (31) is controlled to drive the material-penetrating plate (32) and the auxiliary clamping assembly (22) to move forward to the first position synchronously.

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