CN108085881B - End portion rewinding and sewing device for safety belt webbing - Google Patents

Abstract

The invention provides an end part rewinding and sewing device for a safety belt braid, and belongs to the field of safety belt automatic assembly. Including meshbelt location mechanism of bending, send take shifter, meshbelt sewing machine and take needle feed mechanism, wherein, send take shifter, take needle feed mechanism to set up in meshbelt location mechanism of bending's top, meshbelt sewing machine sets up on meshbelt location mechanism of bending's left, take needle feed mechanism presses the area needle to put on former meshbelt, meshbelt location mechanism of bending is bending the tip of former meshbelt and is rewound in order to wrap up the area needle and form new meshbelt, send take shifter to take new meshbelt to meshbelt sewing machine department, sew up the meshbelt coincidence end of new meshbelt tip by meshbelt sewing machine. According to the invention, the safety belt webbing and the belt needle are mechanically assembled by matching the mechanisms, so that the end part of the webbing can be automatically bent and rewound without manual discharging and feeding, the production efficiency is improved, the production cost is reduced, and the product quality is more ensured.

Description

End portion rewinding and sewing device for safety belt webbing

Technical Field

The invention belongs to the field of automatic assembly of safety belts, and relates to an end part rewinding and sewing device of a safety belt braid.

Background

As automobiles become more and more convenient, the demands of the automobiles will also increase dramatically, and the automobile spare and accessory parts industry will also continue to keep a stable development situation. Safety belts are also in ever increasing demand as critical components in automotive safety devices. The safety belt is a passive safety system composed of parts such as a safety belt webbing, a retractor, a buckle, a plugboard and the like, the end part of the safety belt webbing is fixedly locked in the retractor through a belt needle, so that the safety belt webbing and the retractor are fixedly connected.

The belt needle is typically wrapped around the end of the belt webbing and restrained to the belt webbing by a sewing process for subsequent assembly with a retractor. However, in the existing assembly process of the safety belt webbing and the belt needle, manual feeding and manual assembly are mostly adopted, so that the problems of low production efficiency, poor consistency of product processing quality and the like exist, and the problems are to be solved so as to meet the requirements of industrial production.

Disclosure of Invention

Aiming at the problems existing in the prior art, the invention provides the end part rewinding and sewing device of the safety belt webbing, which has high automation degree, high production efficiency and stable product quality.

The utility model provides a tip rollback of safety belt, sewing device, including meshbelt location mechanism of bending, send area shift mechanism, meshbelt sewing machine constructs and take the needle feed mechanism, wherein, send area shift mechanism, take the needle feed mechanism to set up in meshbelt location mechanism of bending's top, meshbelt sewing machine constructs the left side that sets up at meshbelt location mechanism of bending, take the needle feed mechanism to press the take the needle to put on former meshbelt, meshbelt location mechanism of bending is bent the tip rollback of former meshbelt in order to wrap up the take the needle and form new meshbelt, send area shift mechanism to take new meshbelt to meshbelt sewing machine department, sew up the meshbelt coincidence end of new meshbelt tip by meshbelt sewing machine.

According to the invention, the belt webbing and the belt needle are mechanically assembled by the webbing positioning and bending mechanism, the belt feeding and shifting mechanism, the webbing sewing mechanism and the belt needle discharging mechanism, so that the end part of the webbing can be automatically bent and rewound without manual discharging and feeding, thereby improving the production efficiency and reducing the production cost.

The original braid is an unassembled flat braid, the new braid is a braid wrapped with a braid, and the end of the new braid is provided with a flat braid overlapping end formed by a cylindrical braid coil needle end and a recoiling remainder.

Further, the meshbelt location mechanism of bending is including bending support frame, meshbelt backup pad, meshbelt locating component and meshbelt subassembly of bending, and wherein the meshbelt backup pad is fixed on bending support frame, and meshbelt locating component and meshbelt subassembly of bending set up in the below of meshbelt backup pad, and meshbelt locating component is located meshbelt subassembly of bending's left side. According to the invention, the braid positioning assembly and the braid bending assembly are matched with limit receiving ends of original braids, the braids are consistent in material-to-material, and then bending is performed at fixed points, so that the consistent processing of new braids of the same model is ensured, and the production quality is improved.

Further, a bending opening is formed in the braid supporting plate; the braid positioning assembly comprises a belt end limiting block, a limiting block up-down driving piece for driving the belt end limiting block to move up and down, and a limiting block left-right driving piece for driving the belt end limiting block to move left and right; the webbing bending assembly comprises a webbing bending block, a bending block up-and-down driving piece for driving the webbing bending block to move up and down, and a bending block left-and-right driving piece for driving the webbing bending block to move left and right; wherein the belt end limiting block and the braid bending block can pass through the bending opening to move up and down and left and right. The belt end limiting block and the braid bending block can be driven to move by the driving piece in the up-down, left-right directions, the position is flexible, the actions of ascending blocking, bending and descending for material moving can be more automatically and effectively completed, meanwhile, the positions of the belt end limiting block and the braid bending block in the left-right directions are adjustable, the bending degree of the corresponding braid end is also adjustable, and the belt end bending device is correspondingly applicable to safety belts with more types and lengths, and is wide in application range and high in practicability. The braid bending block pushes the upper top, moves right and presses down, and a series of actions lead the end part of the original braid to be bent, so that the design of the mechanized action is ingenious and manual operation is not required.

Further, the belt end limiting block is further provided with a belt sensor, the left end of the braid bending block is provided with an induction accommodating groove, and the belt end of the belt sensor can be accommodated in the induction accommodating groove. The automatic degree of the equipment is further improved due to the arrangement of the belt sensor, the belt arrival material is sensed, a foundation is provided for subsequent ribbon rewinding and bending, and the reliability of the whole equipment is further improved.

Further, the vertical section of the braid bending block is an L-shaped, the right lower corner of the braid bending block is provided with a bending groove, the bending groove is provided with a bending groove side surface and a bending groove top surface, and the bending groove top surface is an inclined surface which is inclined downwards. The bending groove can effectively bend and rewind the end part of the original braid to form the shape effect of the braid wrapping tape needle, and the braid wrapping needle end of the new braid is accommodated in the bending groove, so that the tape needle is not easy to separate. In addition, the top surface of the bending groove is an inclined surface which is inclined downwards, so that the end part of the original braid to be sewn can be pressed downwards without tilting, and the end part of the original braid is attached to the original braid in parallel, the position of the belt needle is further limited, and a reliable basis is provided for subsequent belt feeding displacement.

Further, the upper part of the braid positioning and bending mechanism is also provided with a braid auxiliary pressing assembly which comprises an auxiliary pressing rack, a pressing rod and an auxiliary pressing driving piece which is arranged on the auxiliary pressing rack and drives the pressing rod to move up and down. The webbing auxiliary pressing assembly can ensure that the original webbing cannot shift when the end part of the original webbing is bent, and ensure the stability and reliability of bending and rewinding actions.

Further, the belt conveying shifting mechanism comprises a belt conveying fixing plate and an entraining component, and the entraining component is driven to move left and right by a belt conveying driving piece arranged on the belt conveying fixing plate. The clamping belt component can move back and forth to clamp and send a new woven belt to the sewing station.

Further, the entraining assembly comprises a shifting bottom plate, an entraining supporting plate, a webbing briquetting, a briquetting up-and-down driving piece for driving the webbing briquetting to move up and down, and a briquetting left-and-right driving piece for driving the webbing briquetting to move left and right, wherein the rear side of the entraining supporting plate is fixed on the shifting bottom plate; the clamping strap supporting plate is arranged above the braid supporting plate and can slide left and right along the braid supporting plate; the webbing pressing block is positioned above the entrainment supporting plate, and the new webbing is positioned between the webbing pressing block and the entrainment supporting plate and is clamped by the belt conveying driving piece to drive the webbing pressing block to shift. The braid pressing block and the clamping support plate are integrally matched to clamp a new braid, so that the new braid moves above the braid pressing block relative to the braid support plate, and the braid can be clamped better to complete transfer.

Furthermore, a material pressing baffle plate is also erected on the clamping belt supporting plate, and the right end of the material pressing baffle plate is tilted upwards to form a belt feeding guide angle. So, former meshbelt is located presses the material baffle and smugglies between the backup pad with smuggleing secretly, and is better spacing to it, and the former meshbelt of bending of former meshbelt tip of being convenient for is rewound, advances in the space that the guide angle that takes can be better the former meshbelt entering presses the material baffle and smugglies between the backup pad with smuggleing secretly, avoids the card material.

Further, the braid sewing mechanism comprises a sewing machine and a presser foot bottom plate, wherein the sewing machine is provided with a left presser foot and a right presser foot which can be respectively pressed on a braid needle rolling end and a braid overlapping end of a new braid; wherein the bottom of the left presser foot is provided with an arc-shaped pressing groove which can be covered and pressed on the needle end of the braid roll. The arc-shaped pressing groove corresponds to the outer contour shape of the needle end of the braid coil, and can press the needle end of the braid coil more firmly, so that the reliability of the sewing process of the sewing machine is improved.

In the invention, after the end part of the original braid enters the braid positioning and bending mechanism and the position is sensed by the belt sensor, the belt needle is pressed on the original braid by the belt needle discharging mechanism, the end part of the original braid is bent and rewound by the braid positioning and bending mechanism to wrap the belt needle to form a new braid, the new braid is brought to the braid sewing mechanism by the belt feeding and shifting mechanism, and the braid overlapping end of the end part of the new braid is sewn by the braid sewing mechanism. The whole process design is ingenious, the process is reasonable, the product consistency is good, the method is also applicable to safety belts of different models and styles, and the application range is wider. Compared with the prior art, the belt webbing and the belt needle are mechanically assembled by matching the webbing positioning and bending mechanism, the belt feeding and shifting mechanism, the webbing sewing mechanism and the belt needle discharging mechanism, and the end part of the webbing can be automatically bent and rewound without manual discharging and feeding, so that the production efficiency is improved, the production cost is reduced, and the product quality is more ensured.

Drawings

Fig. 1 is a schematic view of an end portion rewinding and sewing device of a webbing in an embodiment of the invention.

Fig. 2 is a schematic structural view of an end portion of a webbing retractor in an embodiment of the invention.

Fig. 3 is a schematic structural view of a webbing positioning bending mechanism in an embodiment of the present invention.

Fig. 4 is a schematic structural view of a belt end stopper and a webbing bending block in the embodiment of the invention.

Fig. 5 is a front view of a webbing bending block in an embodiment of the present invention.

Fig. 6 is an exploded view of the webbing bending block according to the embodiment of the present invention, which is an operation of bending and rewinding the original webbing.

Fig. 7 is a schematic structural view of a tape feeding displacement mechanism according to an embodiment of the present invention.

Fig. 8 is an enlarged view of a portion a in fig. 7.

Fig. 9 is a schematic structural view of a webbing sewing mechanism in an embodiment of the present invention.

Fig. 10 is a schematic view of the structure of the left presser foot in the webbing sewing mechanism in the embodiment of the invention.

Fig. 11 is an effect diagram of the left and right presser feet pressing a new webbing in the embodiment of the invention.

Detailed Description

In order to make the technical means, creation characteristics, achievement of the purposes and effects achieved by the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 11 for an end portion rewinding and sewing device for a seat belt webbing according to the present invention.

As shown in fig. 1, an end portion rewinding and sewing device for a safety belt webbing comprises a frame 00, and a webbing positioning and bending mechanism 1, a webbing shifting mechanism 2, a webbing sewing mechanism 3 and a webbing discharging mechanism 4 which are arranged on the frame 00, wherein the webbing shifting mechanism 2 and the webbing discharging mechanism 4 mainly act on the upper portion of the webbing positioning and bending mechanism 1, and the webbing sewing mechanism 3 is arranged on the left side of the webbing positioning and bending mechanism 1. The right side of the braid positioning and bending mechanism 1 is also provided with a braid buffer rack 7 for buffering and receiving the cut original braid. The front of the braid positioning and bending mechanism 1 is also provided with a braid placing plate 6, so that a relatively stable supporting zone is provided for the new braid which is driven to move when the new braid is sewn, and the new braid is prevented from falling off, and the sewing quality is prevented from being influenced.

After the end part of the original webbing 01 enters the webbing positioning bending mechanism 1, the webbing needle discharging mechanism 4 presses the webbing needle 02 on the original webbing 01, the webbing positioning bending mechanism 1 bends and rolls back the end part of the original webbing 01 to wrap the webbing needle 02 to form a new webbing 03, the webbing feeding shifting mechanism 2 brings the new webbing 03 to the webbing sewing mechanism 3, and the webbing sewing mechanism 3 sews the webbing overlapping end of the end part of the new webbing 03.

As shown in fig. 6, an unassembled flat webbing is defined as an original webbing 01, a webbing wrapped with a webbing 02 is defined as a new webbing 03, and an end portion of the new webbing 03 has a substantially cylindrical webbing needle end 031 and a flat webbing overlapping end 032 formed by a rewind surplus.

In this embodiment, as shown in fig. 2, the needled discharging mechanism 4 includes a needled discharging frame 41, a needled discharging front-rear driving member 42, a needled discharging up-down driving member 43, and needled gripping fingers 44. After the belt needle 02 is clamped by opening and closing the belt needle clamping finger 44, the belt needle clamping finger 44 is driven by the belt needle discharging front-rear driving piece 42 to be sent to the upper part of the braid positioning bending mechanism 1, after the original braid 01 is in place, the belt needle discharging upper-lower driving piece 43 drives the belt needle clamping finger 44 to descend, the belt needle 02 is pressed on the braid, after the end part of the original braid 01 is rewound to wrap the belt needle 02, the belt needle clamping finger 44 is opened, ascended and moved back to the original position, and the material taking and discharging actions are repeated.

As shown in fig. 3, 4 and 5, the webbing positioning and bending mechanism 1 comprises a bending support frame 11, a webbing support frame 12, a webbing positioning assembly 13 and a webbing bending assembly 14, wherein the webbing support frame 12 is fixed on the bending support frame 11, the webbing positioning assembly 13 and the webbing bending assembly 14 are arranged below the webbing support frame 12, and the webbing positioning assembly 13 is positioned on the left side of the webbing bending assembly 14.

The webbing support plate 12 is provided with a bending opening 121; the webbing positioning assembly 13 comprises a belt end limiting block 131, a limiting block up-down driving piece 132 for driving the belt end limiting block 131 to move up and down, and a limiting block left-right driving piece 133 for driving the belt end limiting block 131 to move left and right; the webbing bending assembly 14 comprises a webbing bending block 141, a bending block up-and-down driving piece 142 for driving the webbing bending block 141 to move up and down, and a bending block left-and-right driving piece 143 for driving the webbing bending block 141 to move left and right; the belt end stopper 131 and the webbing bending block 141 can move up and down and left and right through the bending opening 121.

The belt end limiting block 131 is further provided with a belt sensor 15, the left end of the braid bending block 141 is provided with a sensing accommodating groove 1411, the belt end 151 of the belt sensor 15 can be accommodated in the sensing accommodating groove 1411, and the belt sensing end 151 is positioned below the upper end face of the belt end limiting block 131.

The belt end limiting block 131 and the braid bending block 141 can be driven to move by the driving piece in the up-down, left-right directions, the position is flexible, the actions of lifting up the material, bending and descending the blank for material moving can be more automatically and effectively completed, meanwhile, the left-right direction positions of the belt end limiting block 131 and the braid bending block 141 are adjustable, the clamping and discharging positions of the belt needle 02 are fixed, the end positions of the original braid 01 are changeable, and therefore new braids with different rewinding degrees can be manufactured according to different model requirements, the application range is wide, and the practicability is strong. The braid bending block 141 moves upwards, rightwards and downwards, and a series of actions lead the end part of the original braid to be bent, so that the mechanical action design is ingenious and manual operation is not needed.

The webbing bending block 141 has an "n" -shaped vertical cross section, and a lower right corner thereof forms a bending groove 1412, the bending groove 1412 having a bending groove side surface 1413 and a bending groove top surface 1414, wherein the bending groove top surface 1414 is an inclined downward surface. The junction of the bend channel vertical surface 1413 and the bend channel top surface 1414 is provided as an arcuate bend channel interface 1415. The bending groove 1412 can effectively bend the end of the original webbing 01 back to form the shape effect of the webbing winding needle, and the webbing winding needle end 031 of the new webbing 03 is accommodated in the bending groove 1412, so that the webbing 02 is not easy to separate. In addition, the top 1414 of the bending groove is an inclined surface which is inclined downwards, so that the end to be sewn of the original braid 01 can be ensured to be pressed downwards without tilting, and the end to be sewn is enabled to be attached to the original braid in parallel, the position of the belt needle 02 is further limited, and a reliable basis is provided for subsequent belt feeding displacement.

When the belt end stopper 131 and the webbing bending block 141 are in the original state, the upper end face of the webbing bending block 141 is approximately flush with the upper face of the webbing supporting plate 12, the belt end stopper 131 is close to the webbing bending block 141, the belt sensing end 151 of the belt sensor 15 is accommodated in the sensing accommodating groove 1411, and the upper end face of the belt sensing end 151 is approximately flush with the upper end face of the webbing bending block 141.

As shown in fig. 2, 7 and 8, the belt shifting mechanism 2 comprises a belt fixing plate 21 and an entraining component 23 which are arranged behind the webbing positioning and bending mechanism 1, and the entraining component 23 is driven to move left and right by a belt driving piece 22 arranged on the belt fixing plate 21. The entraining assembly 23 comprises a shifting bottom plate 24, an entraining supporting plate 25, a webbing briquetting 26, a briquetting up-and-down driving piece 27 for driving the webbing briquetting 26 to move up and down, and a briquetting left-and-right driving piece 28 for driving the webbing briquetting 26 to move left and right, wherein the rear side of the entraining supporting plate 25 is fixed on the shifting bottom plate 24, the briquetting left-and-right driving piece 28 is arranged at the upper end of the shifting bottom plate 24, the movable end of the briquetting left-and-right driving piece 28 faces left and is fixed with the briquetting up-and-down driving piece 27, and the movable end of the briquetting up-and-down driving piece 27 faces down and is fixedly connected with the right end of the webbing briquetting 26 through a briquetting connecting plate 261; the clamping and supporting plate 24 is pi-shaped, is positioned on the braid supporting plate 12 and can slide left and right along the braid supporting plate 12; the webbing press block 26 is positioned above the entrainment support plate 25, and the new webbing 03 is positioned between the webbing press block 26 and the entrainment support plate 25 and is clamped and driven to move by the belt conveying driving piece 22.

The clamping and supporting plate 25 is also provided with a pressing baffle 29 which is parallel to the clamping and supporting plate 25, and the right end of the pressing baffle is tilted upwards to form a belt feeding guide angle 291. A swage baffle 29 is located below the press ram connection plate 261 near the location of the web press 26.

The webbing auxiliary pressing assembly 5 is further arranged above the webbing positioning and bending mechanism 1 and comprises an auxiliary pressing frame 51, a pressing rod 53 and an auxiliary pressing driving piece 52 which is arranged on the auxiliary pressing frame 51 and drives the pressing rod 53 to move up and down. The lower end of the compression bar 53 is also connected with a bar end pressing point 54 which is soft rubber and protects the webbing from hard contact.

As shown in fig. 3, the webbing guide assembly 16 is also mounted on the webbing support plate 12, and includes a guide bottom plate 161 and a webbing side shield plate 162, the guide bottom plate 161 being fixed to the right end face of the webbing support plate 12, the webbing side shield plate 162 being fixed to both sides of the guide bottom plate 161. When the webbing enters the positioning bending station, the webbing guide assembly 16 guides and conveys the entrainment supporting plate 25, and the webbing enters between the material pressing baffle 29 and the entrainment supporting plate 25, so that manual feeding is not needed.

Referring to fig. 2 and 3, a schematic layout is shown of the entrainment member 23 of the tape transfer mechanism 2 in its original, i.e., rightmost, state. The rightmost end of the strap supporting plate 25 is propped against the leftmost end of the guide bottom pad 161, and the plane height of the strap supporting plate 25 is approximately equal to the plane height of the guide bottom pad 161, so that the webbing can smoothly and smoothly transition from the webbing buffer frame 7 to the strap supporting plate 25 through the webbing guide assembly 16. The webbing pressing block 26 is positioned right above the left end of the entrainment supporting plate 25, the needle-carrying clamping finger 44 is positioned between the entrainment supporting plate 25 and the webbing bending block 141, and the webbing end limiting block 131 is positioned on the left side of the webbing bending block 141. And the presser bar 53 of the webbing assist presser assembly 5 is located above the gap (not shown) of the presser plate 29 for pressing webbing.

Fig. 7 is a state in which the new webbing 03 is brought to the leftmost side for the entrainment member 23 of the webbing shifting mechanism 2.

As shown in fig. 9-11, the webbing sewing mechanism 3 comprises a sewing machine 31 and a presser foot base plate 32, wherein the sewing machine 31 is provided with left and right presser feet 33, 34 which can be respectively pressed on a webbing needle end 031 and a webbing overlapping end 032 of a new webbing 03; wherein the bottom of the left presser foot 33 is provided with an arc-shaped pressing groove 331, and the arc-shaped pressing groove 331 can be covered and pressed on the webbing winding needle end 031.

The sewing machine 31 itself is a common device having left and right presser feet 33, 34 which are driven up and down by the inside of the sewing machine 31.

When the sewing machine 31 is used for sewing, the end part of a new webbing 03 is clamped between the left and right presser feet 33, 34 and the presser foot bottom plate 32, the whole structure is driven to move back and forth and left and right by the internal driving of the sewing machine 31, and the webbing overlapping part between the left and right presser feet 33, 34 is sewn.

The bottom surface of the right presser foot 34 is opposite to the plane, and can be provided with wavy lines so as to increase the friction force of the presser belt, so that the new webbing 03 is not easy to separate when being driven to move back and forth and left and right, and the consistency and stability of the sewing result are ensured.

A material feeding sensor 35 is provided on the right side of the sewing machine 31, and a detection device 36 for a sewing thread is provided under the presser foot base plate 32. For detecting the color of the residue and the wire.

The end portion rewinding and sewing device of the webbing in this embodiment is a specific action process as follows.

1. The belt end stopper 131, the webbing bending block 141, and the entrainment assembly 23 are all in the original states described above.

2. The original webbing 01 is guided by the webbing guide assembly 16 from the webbing buffer frame 7 to be conveyed to the upper clamping strap supporting plate 25, and enters between the material pressing baffle 29 and the clamping strap supporting plate 25, and always reaches the upper end face of the webbing bending block 141 along the clamping strap supporting plate 25 and is propped against the strap end limiting block 131 until the strap sensor 15 senses the material, and the strap end limiting block 131 moves left and descends to a position not exceeding the upper plane of the webbing supporting plate 12, so that the action space of the webbing bending block 141 and the subsequent strap moving space are reserved.

3. The webbing bending block 141 starts bending and rewinding the original webbing 01, during which the presser bar 53 of the webbing assist presser assembly 5 descends, and the bar end presser point 54 presses against the webbing on the strap support plate 25. The operation and effect of the webbing bending block 141 are schematically shown from top to bottom in fig. 6. Fig. a shows the original webbing 01 reaching the upper end face of the webbing bending block 141. Fig. B shows the tape needle 02 held by the tape needle holding fingers 44 and placed on the original webbing 01. The drawing C shows that the webbing bending block 141 is lifted up to jack up the end of the original webbing 01. The webbing bending block 141 moves to the right in fig. D to bend the end portion of the original webbing 01. The webbing bending block 141 is pressed down in fig. E, the end of the original webbing 01 includes the webbing 02 to form a rewinding effect, a new webbing 03 is formed, and the webbing winding needle end 031 of the new webbing 03 is accommodated in the bending groove 1412. (the actions of FIG. C and FIG. D may be performed simultaneously)

4. The needle-holding finger 44 releases the needle 02 and rises back to the original position, the presser bar 53 rises, and the webbing press block 26 descends to hold the webbing overlapping end 032 of the new webbing 03 in cooperation with the entrainment support plate 25, as shown in fig. 8. The webbing bending block 141 is raised and lowered to the left to a state of being leveled with the upper plane of the webbing support plate 12, leaving the webbing feeding space of the webbing strap assembly 23.

5. The entraining assembly 23 is driven by the belt drive 22 to move leftwards along the webbing support plate 12 until the end of the new webbing 03 reaches below the left and right presser feet 33, 34, at which time the left and right presser feet 33, 34 are in a lifted standby state. Then the webbing pressing block 26 moves right and rises, the left and right presser feet 33, 34 press down, respectively press the webbing needle end 031 and the webbing overlapping end 032, the sewing machine 31 starts to work, and the webbing overlapping portion between the left and right presser feet 33, 34 is sewn.

6. The whole entrainer assembly 23 is retracted to the original position, and the belt end limiting block 131 is lifted and moves right to approach the braid bending block 141 to wait for receiving materials.

Compared with the prior art, the belt webbing positioning and bending mechanism 1, the belt webbing shifting mechanism 2, the belt webbing sewing mechanism 3 and the belt webbing discharging mechanism 4 are matched to realize mechanical assembly of the belt webbing and the belt webbing, and the belt webbing end part can be automatically bent and rewound without manual discharging and feeding, so that the production efficiency is improved, the production cost is reduced, and the product quality is ensured.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the embodiments and scope of the present invention, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included in the scope of the present invention.

Claims (6)

1. The end part rewinding and sewing device of the safety belt webbing is characterized by comprising a webbing positioning and bending mechanism (1), a webbing shifting mechanism (2), a webbing sewing mechanism (3) and a webbing discharging mechanism (4), wherein the webbing shifting mechanism (2) and the webbing discharging mechanism (4) are arranged above the webbing positioning and bending mechanism (1), the webbing sewing mechanism (3) is arranged on the left side of the webbing positioning and bending mechanism (1), the webbing discharging mechanism (4) presses and places a webbing (02) on an original webbing (01), the webbing positioning and bending mechanism (1) bends and rolls the end part of the original webbing (01) to wrap the webbing (02) to form a new webbing (03), the webbing shifting mechanism (2) brings the new webbing (03) to the webbing sewing mechanism (3), and the webbing overlapping end of the end part of the new webbing (03) is sewn by the webbing sewing mechanism (3);

the ribbon positioning and bending mechanism (1) comprises a bending support frame (11), a ribbon support plate (12), a ribbon positioning assembly (13) and a ribbon bending assembly (14), wherein the ribbon support plate (12) is fixed on the bending support frame (11), the ribbon positioning assembly (13) and the ribbon bending assembly (14) are arranged below the ribbon support plate (12), and the ribbon positioning assembly (13) is positioned on the left side of the ribbon bending assembly (14);

a bending opening (121) is formed in the braid supporting plate (12); the braid positioning assembly (13) comprises a belt end limiting block (131), a limiting block up-down driving piece (132) for driving the belt end limiting block (131) to move up and down, and a limiting block left-right driving piece (133) for driving the belt end limiting block (131) to move left and right; the webbing bending assembly (14) comprises a webbing bending block (141), a bending block up-and-down driving piece (142) for driving the webbing bending block (141) to move up and down, and a bending block left-and-right driving piece (143) for driving the webbing bending block (141) to move left and right; wherein the belt end limiting block (131) and the braid bending block (141) can pass through the bending opening (121) to move up and down and left and right;

the vertical section of the braid bending block (141) is L-shaped, the right lower corner of the braid bending block is provided with a bending groove (1412), the bending groove (1412) is provided with a bending groove side surface (1413) and a bending groove top surface (1414), and the bending groove top surface (1414) is an inclined surface which is inclined downwards;

the upper part of the braid positioning and bending mechanism (1) is also provided with a braid auxiliary pressing component (5) which comprises an auxiliary pressing machine frame (51), a pressing rod (53) and an auxiliary pressing driving piece (52) which is arranged on the auxiliary pressing machine frame (51) and drives the pressing rod (53) to move up and down.

2. The end rewinding and sewing device of the webbing of claim 1, characterized in that the webbing end limiting block (131) is further provided with a webbing sensor (15), the left end of the webbing bending block (141) is provided with an induction accommodating groove (1411), and the webbing end (151) of the webbing sensor (15) can be accommodated in the induction accommodating groove (1411).

3. An end rewinding and sewing apparatus for webbing as claimed in claim 1, characterized in that the webbing displacement mechanism (2) comprises a webbing fixing plate (21), a entraining member (23), the entraining member (23) being driven to move left and right by a webbing driving member (22) mounted on the webbing fixing plate (21).

4. A seat belt webbing end portion rewinding and sewing apparatus according to claim 3, characterized in that the webbing strap assembly (23) includes a shift base plate (24), a webbing strap pressing block (26), a pressing block up-down driving member (27) for driving the webbing strap pressing block (26) to move up-down, a pressing block left-right driving member (28) for driving the webbing strap pressing block (26) to move left-right, wherein the webbing strap pressing block (25) rear side is fixed on the shift base plate (24), the pressing block left-right driving member (28) is mounted on the upper end of the shift base plate (24), the movable end thereof is directed left and fixed with the pressing block up-down driving member (27), and the movable end of the pressing block up-down driving member (27) is directed down and fixedly connected with the right end of the webbing strap pressing block (26) through a pressing block connecting plate (261); the clamping and supporting plate (25) is arranged on the braid supporting plate (12) and can slide left and right along the braid supporting plate (12); the webbing pressing block (26) is positioned above the entrainment supporting plate (25), and the new webbing (03) is positioned between the webbing pressing block (26) and the entrainment supporting plate (25) and is driven by the belt conveying driving piece (22) to move.

5. The end lap, sewing apparatus of a seat belt webbing of claim 4, wherein the strap support plate (25) is further provided with a hold-down flap (29) having a right end which is tilted up to form the in-take guide angle (291).

6. An end lap, sewing arrangement for seat belt webbing according to claim 1, characterized in that the webbing sewing mechanism (3) comprises a sewing machine (31) and a presser foot sole (32), wherein the sewing machine (31) is provided with a left and a right presser foot (33, 34) which are respectively pressed against the webbing-winding end (031) and the webbing-overlapping end (032) of the new webbing (03); wherein the bottom of the left presser foot (33) is provided with an arc-shaped pressing groove (331), and the arc-shaped pressing groove (331) can be covered and pressed on the braid needle rolling end (031).