CN112210913A - Small-angle sewing device for automobile interior trim molding skin - Google Patents
Small-angle sewing device for automobile interior trim molding skin Download PDFInfo
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- CN112210913A CN112210913A CN202010879325.7A CN202010879325A CN112210913A CN 112210913 A CN112210913 A CN 112210913A CN 202010879325 A CN202010879325 A CN 202010879325A CN 112210913 A CN112210913 A CN 112210913A
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B75/00—Frames, stands, tables, or other furniture adapted to carry sewing machines
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B35/00—Work-feeding or -handling elements not otherwise provided for
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Abstract
The invention relates to a small-angle sewing device for an automotive interior molding skin, which comprises: the small-head sewing machine comprises a sewing machine frame, a small sewing machine head and a circular arc-shaped narrow sewing table structure which are arranged on the sewing machine frame in an up-down corresponding mode, and a guide pin structure which is arranged on the small sewing machine head and corresponds to the narrow sewing table structure; the auxiliary feeding tool is correspondingly matched with the small-head sewing machine; the auxiliary feeding tool comprises a tool base arranged beside the sewing machine frame, a rotary driving structure arranged on the tool base, a telescopic driving structure connected with the rotary driving structure, and a surface skin supporting wheel structure arranged at the end part of the telescopic driving structure, wherein the surface skin supporting wheel structure is correspondingly matched with the narrow sewing table structure. The invention can solve the problem that the appearance defects such as folds, damages, marks and the like are easy to generate when the small radius corner structure or the small round corner near end structure of the formed surface skin is sewn in the related technology.
Description
Technical Field
The invention relates to the technical field of automotive interior trim, in particular to a small-angle sewing device for an automotive interior trim molding skin.
Background
The suture design is more and more commonly applied to the automotive interior, and the soft interior product with exquisite process texture and rich and attractive suture modeling can be manufactured by performing the suture design on the formed surface.
The sewing machine is characterized in that the sewing machine is provided with a sewing table, a sewing table is arranged on the sewing table, and the sewing machine is provided with a sewing machine sewing table which is a planar structure. The formed surface skin often has some three-face angle structures, small radius corner structures or small round angle near-end structures, the areas are limited by structures, the surface skin unfolding degree is limited, even if the surface skin is unfolded forcibly, appearance defects such as folds, damages, marks and the like can be generated by the feeding extrusion of a presser foot, a feeding mechanism and a sewing table of a sewing machine during sewing, so the sewing can be generally carried out only on the same plane and the sewing on structures with large corner widths. This greatly limits the use of stitching on the interior trim, making many desirable styling designs impractical for the interior trim.
Disclosure of Invention
The invention provides a small-angle sewing device for an automotive interior molding skin, which aims to solve the problem that appearance defects such as folds, damages, marks and the like are easy to generate when a small-radius corner structure or a small-radius near-end structure of the molding skin is sewn in the related technology.
In a first aspect, the present invention provides a small angle sewing device for an automotive interior molded skin, comprising:
the small-head sewing machine comprises a sewing machine frame, a small sewing machine head and a circular arc-shaped narrow sewing table structure which are arranged on the sewing machine frame in an up-down corresponding mode, and a guide pin structure which is arranged on the small sewing machine head and corresponds to the narrow sewing table structure; and the number of the first and second groups,
the auxiliary feeding tool is correspondingly matched with the small-head sewing machine; the auxiliary feeding tool comprises a tool base arranged beside the sewing machine frame, a rotary driving structure arranged on the tool base, a telescopic driving structure connected with the rotary driving structure, and a surface skin supporting wheel structure arranged at the end part of the telescopic driving structure, wherein the surface skin supporting wheel structure is correspondingly matched with the narrow sewing table structure.
In some embodiments, the narrow sewing table structure comprises a cylindrical narrow sewing table body protruding from the sewing machine frame and located at the bottom of the small sewing machine head, and a sewing table plate attached to the top surface of the narrow sewing table body, wherein an arc-shaped sewing groove is formed in the sewing table plate;
the bottom of the small sewing machine head is provided with a sewing needle and a sewing presser foot, the sewing needle vertically corresponds to the arc-shaped sewing groove, and the sewing presser foot vertically corresponds to the sewing needle plate.
In some embodiments, the guide structure comprises a guide pressing structure disposed at a side of the small sewing machine head, and an edge-abutting guide plate connected to the guide pressing structure, the edge-abutting guide plate being disposed corresponding to the sewing table plate and located at a side of the sewing needle.
In some embodiments, the guide pin pressing structure includes a guide pin mounting bracket provided at a side of the small sewing machine head, and a guide pin pressing cylinder provided on the guide pin mounting bracket;
the side guide foot plate comprises a guide foot connecting plate connected with the guide foot pressing cylinder and a guide foot side plate arranged on one side of the guide foot connecting plate in a protruding mode, and the guide foot side plate corresponds to the sewing needle plate and is used for corresponding to a thread guide characteristic groove in the forming surface.
In some embodiments, the guide pin mounting bracket is rotatably coupled to the small sewing machine head by an angle adjusting bolt;
the guide pin connecting plate is provided with a guide pin position adjusting sliding groove, and the end part of the guide pin pressing cylinder is connected into the guide pin position adjusting sliding groove through a connecting bolt.
In some embodiments, the rotation driving structure includes a swing driving motor disposed on the tool base, and a swing bracket connected to the swing driving motor;
the telescopic driving structure comprises a telescopic driving cylinder structure connected with the swing support and a telescopic swing arm transversely connected with the telescopic driving cylinder, and the skin supporting wheel structure is arranged at the end part of the telescopic swing arm.
In some embodiments, the telescopic driving cylinder structure comprises a cylinder mounting bracket connected with the swing bracket, and a telescopic driving cylinder body with a displacement sensor arranged on the cylinder mounting bracket;
the telescopic swing arm comprises a cylindrical swing main rod connected with the telescopic driving cylinder body and a swing sub-rod telescopically connected with the swing main rod, and the swing main rod and the swing sub-rod are connected and fastened through a telescopic adjusting fastening bolt.
In some embodiments, the skin supporting wheel structure includes a supporting wheel mounting bracket disposed at an end of the telescopic swing arm, and a skin supporting tug rotatably disposed on the supporting wheel mounting bracket, the skin supporting tug being configured to drag the skin supporting tug during a molded skin sewing process.
In some embodiments, the skin support wheel structure includes skin feed sensors disposed on one side of the support wheel mounts, the skin feed sensors being disposed side-by-side on one side of the skin support tug.
In some embodiments, the skin support wheel structure includes a skin motion sensing sensor disposed on the other side of the support wheel mount, and a sensor sensitivity adjustment mechanism disposed on the skin motion sensing sensor.
The technical scheme provided by the invention has the beneficial effects that: the sewing machine can perform adaptive sewing on a small-radius corner structure or a small-radius near-end structure of a formed surface, is not easy to generate appearance defects such as folds, damages, marks and the like, enlarges the application range of a sewing line on an interior, and can realize a plurality of expected appearance models on the interior.
The embodiment of the invention provides a small-angle sewing device for a molded surface skin of an automobile interior, which can adapt to a small-radius corner structure or a small-radius near-end structure on the molded surface skin by arranging a small sewing machine head and a corresponding circular-arc narrow sewing table structure, so that the molded surface skin is sewn on the narrow sewing table structure and is extruded little or not extruded in the feeding process by matching with the small sewing machine head, and the problems of surface skin crumpling, uneven stitches and surface skin tearing which are easily caused in conventional sewing of the molded surface skin can be effectively solved. And through setting up corresponding guide foot structure, can guide the shaping epidermis in sewing process, and through the location guide effect of guide foot structure, can make the sewing thread follow appointed route from fixed starting point and advance, realize perfect outward appearance ornamental thread sewing effect. And, through setting up supplementary pay-off frock, can utilize epidermis supporting wheel structure to support at the in-process that sews the shaping epidermis, can also utilize flexible drive structure to pull the shaping epidermis simultaneously, can also rotate the shaping epidermis through rotating the drive structure in addition to adjustment sewing direction. Therefore, under the action of the auxiliary feeding tool, the influence of external resistance or pulling force on sewing quality can be effectively avoided, and stable sewing of large interior trim products is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic perspective view of a small-angle sewing device for an automotive interior molded skin (sewing a small-angle sewing portion of the molded skin) according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a small-angle sewing device for sewing a molded skin of an automotive interior according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a small-head sewing machine of the small-angle sewing device for the molded skin of the automotive interior according to the embodiment of the invention;
FIG. 4 is a schematic side view of a small-head sewing machine of the small-angle sewing device for the molded skin of the automotive interior according to the embodiment of the invention;
fig. 5 is a schematic perspective view of an auxiliary feeding tool of the automotive interior molding skin small-angle sewing device according to the embodiment of the invention.
In the figure: 10. forming a skin; 11. sewing the part at a small angle; 12. a suture guide feature slot; 100. a small head sewing machine; 110. a sewing machine frame; 120. a small sewing machine head; 122. sewing the presser foot; 124. a sewing needle; 130. a narrow sewing table structure; 132. a sewing needle plate; 140. a lead structure; 142. a guide pin mounting frame; 143. an angle adjusting bolt; 144. the guide pin compresses the cylinder; 146. a side-leaning foot guide plate; 200. an auxiliary feeding tool; 210. a tooling base; 220. a telescopic driving cylinder structure; 230. a rotation driving structure; 240. a telescopic swing arm; 250. a skin-supporting wheel structure; 252. a skin-supporting tug; 254. a skin incoming material sensor; 256. an epidermal motion induction sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The sewing machine is characterized in that the sewing machine is provided with a sewing table, a sewing table is arranged on the sewing table, and the sewing machine is provided with a sewing machine sewing table which is a planar structure. The formed surface skin often has some three-face angle structures, small radius corner structures or small round angle near-end structures, the areas are limited by structures, the surface skin unfolding degree is limited, even if the surface skin is unfolded forcibly, appearance defects such as folds, damages, marks and the like can be generated by the feeding extrusion of a presser foot, a feeding mechanism and a sewing table of a sewing machine during sewing, so the sewing can be generally carried out only on the same plane and the sewing on structures with large corner widths. This greatly limits the use of stitching on the interior trim, making many desirable styling designs impractical for the interior trim. In order to solve the technical problem, the invention provides a small-angle sewing device for an automotive interior molding skin.
As shown in fig. 1 to 2, the small-angle sewing device for the skin of the automotive interior trim includes a small-head sewing machine 100 and an auxiliary feeding tool 200 correspondingly matched with the small-head sewing machine 100. The small-angle sewing part 11 of the molded skin 10 can be sewn through the small-end sewing machine 100 and the auxiliary feeding tool 200 which are matched with each other. Also, in the present embodiment, the molded skin 10 may be a slush molded skin, a vacuum in-mold molded skin, an injection molded skin, or the like; the epidermis material has the PVC class, the TPO class, PVC + PPFoam class, TPO + PPFoam class, TPV class etc. has the design of seam molding on the shaping epidermis, and has the sewing at small-angle sewing position, and the shaping epidermis is final for the A face molding of interior trim product, so should keep strict appearance quality. The sewing of low-angle sewing position is dihedral angle or three-sided angle, and minimum dihedral angle R equals 3mm, and minimum three-sided angle R equals 5mm, and R is the fillet of turning department, and 3mm, 5mm are R angle radius. The suture modeling part is provided with a suture guide characteristic groove 12. The physical properties of the molded skin are as follows: the thickness of the surface skin is not less than 0.5mm and not more than 3mm, the thickness of the surface skin is uniform in transition, and the shore hardness and the scratch resistance of the surface skin can meet the national standard of corresponding materials or the standard of a host factory.
Specifically, as shown in fig. 3 to 4, the small head sewing machine 100 may include a sewing machine frame 110, a small sewing head 120 and a circular arc-shaped narrow sewing table structure 130 which are respectively provided on the sewing machine frame 110 in an up-and-down manner, and a guide structure 140 which is provided on the small sewing head 120 and corresponds to the narrow sewing table structure 130. As shown in fig. 5, the auxiliary feeding tool 200 may include a tool base 210 disposed beside the sewing machine frame 110, a rotation driving structure 230 disposed on the tool base 210, a telescopic driving structure connected to the rotation driving structure, and a skin supporting wheel structure 250 disposed at an end of the telescopic driving structure, wherein the skin supporting wheel structure 250 is correspondingly matched with the narrow sewing table structure 130.
By arranging the small sewing machine head 120 and the corresponding arc-shaped narrow sewing table structure 130, the small-radius corner structure or the small-corner near-end structure (namely the small-angle sewing part 11) on the formed skin 10 can be adapted, so that the formed skin 10 is sewn on the narrow sewing table structure 130, and the small sewing machine head 120 is matched, so that the formed skin 10 is extruded little or no extrusion in the feeding process, and the problems of skin crumpling, uneven stitches and skin tearing easily occurring in the conventional sewing of the formed skin 10 can be effectively solved. Furthermore, the corresponding guide foot structures 140 are arranged to guide the formed skin 10 during sewing, and the positioning and guiding function of the guide foot structures 140 enables the sewing thread to travel along a specified path from a fixed starting point, thereby realizing perfect appearance decorative thread sewing effect. Moreover, by arranging the auxiliary feeding tool 200, the formed skin 10 can be supported by the skin supporting wheel structure 250 in the sewing process, and meanwhile, the formed skin 10 can be pulled by the telescopic driving structure, and in addition, the formed skin can be rotated by the rotating driving structure 230 so as to adjust the sewing direction. Therefore, under the action of the auxiliary feeding tool 200, the influence of external resistance or pulling force on sewing quality can be effectively avoided, and stable sewing of large interior trim products is realized.
Further, the narrow sewing table structure 130 may include a cylindrical narrow sewing table body protruded on the sewing machine frame 110 and positioned at the bottom of the small sewing head 120, and a sewing table plate 132 attached to the top surface of the narrow sewing table body, and the sewing table plate 132 is provided with an arc-shaped sewing groove. By providing the narrow cylindrical sewing table body on the sewing machine frame 110 and providing the arc-shaped sewing table plate 132 and the arc-shaped sewing groove on the narrow sewing table body, it is possible to adapt to a small fillet and a small corner on the molded skin, to support the molded skin 10 well, and to prevent excessive pressing thereof. The small sewing head 120 has a sewing needle 124 and a sewing presser foot 122 at the bottom thereof, the sewing needle 124 vertically corresponds to the arc-shaped sewing groove, and the sewing presser foot 122 vertically corresponds to the sewing table plate 132. During sewing, the sewing presser foot 122 cooperates with the sewing table plate 132 to press the molded skin 10, and sewing is performed at the arc-shaped sewing groove by the sewing needle 124. In addition, in this embodiment, the small-head sewing machine 100 is a special inclined arm column type sewing machine, the narrow sewing table body is in a circular arc structure following the corner, and the size of the pressing head of the narrow sewing table body is less than or equal to 20mm and 20 mm.
The stitch guide 140 includes a stitch guide pressing structure provided at a side of the small sewing head 110, and a side guide plate 146 connected to the stitch guide pressing structure, the side guide plate 146 being provided corresponding to the sewing needle plate 132 and being positioned at a side of the sewing needle 124. This guide pin compact structure can correspond with suture direction characteristic groove 12 on shaping epidermis 10 for in the suture direction characteristic groove 12 on shaping epidermis 10 is located to guide pin compact structure pressure, makes shaping epidermis 10 can be along appointed route accuracy walking, lets the suture fall in required accurate position, with fix a position and lead to the shaping epidermis. Also, the side flipper foot 146 can be positioned at an adjustable position to the left or right of the sewing needle.
Further, the guide pin pressing structure may include a guide pin mounting bracket 142 provided at a side of the small sewing head 120, and a guide pin pressing cylinder 144 provided at the guide pin mounting bracket 142. The side guide plate 146 includes a guide connecting plate connected to the guide pressing cylinder 144, and a guide side plate protruding from one side of the guide connecting plate, and the guide side plate is provided corresponding to the sewing table plate 132 and is adapted to correspond to the thread guide groove 12 of the molded cover 10. The guide foot pressing structure can be fixedly installed through the guide foot installation frame 142, and the guide foot pressing cylinder 144 can lift the side-by-side guide foot plate 146 so as to drive the guide foot side plate to press the suture line guide characteristic groove 12 of the formed skin.
Moreover, the guide leg mounting bracket 144 can be rotatably connected to the small sewing machine head 120 by the angle adjusting bolt 143, so that the mounting angle of the guide leg mounting bracket 142 and the entire guide leg pressing structure can be adjusted by the angle adjusting bolt 143 to adapt to the suture guiding feature grooves 12 with different angles. And, a guide pin position adjusting sliding groove is formed on the guide pin connecting plate, and an end of the guide pin pressing cylinder 144 is connected to the guide pin position adjusting sliding groove by a connecting bolt. Thus, the connecting position of the guide pin pressing cylinder 144 at the guide pin position adjusting slide groove can be adjusted according to the position of the suture guide feature groove 12 on the molded skin 10, so as to adjust the position of the guide pin side plate and the suture guide feature groove 12.
In addition, the rotation driving structure 230 may include a swing driving motor disposed on the tool base 210, and a swing bracket connected to the swing driving motor. Further, the telescopic driving structure may include a telescopic driving cylinder structure 220 connected to the swing frame, and a telescopic swing arm 240 transversely connected to the telescopic driving cylinder structure 220, and the skin supporting wheel structure 250 is provided at an end of the telescopic swing arm 240. In the process of sewing the molded skin 10, the skin support wheel structure 250 can support the molded skin 10 to prevent the longer molded skin from sagging. Specifically, the telescopic swing arm 240 and the skin support wheel structure 250 can be extended and retracted by the telescopic driving cylinder structure 220 to pull the molded skin 10, so that the molded skin 10 can be well supported. Moreover, the telescopic driving structure and the skin supporting wheel structure 250 can be swung by swinging the driving motor, and the angle of the formed skin can be adjusted, so that the corner sewing of the formed skin is realized.
Also, the telescopic driving cylinder structure 220 may include a cylinder mounting bracket connected to the swing bracket, and a telescopic driving cylinder block having a displacement sensor provided on the cylinder mounting bracket. The telescopic swing arm 240 can be driven to extend and retract through the telescopic driving cylinder body, and the telescopic displacement can be controlled through a displacement sensor arranged on the telescopic driving cylinder body, so that the telescopic driving cylinder body is accurate and reliable in movement. The telescopic swing arm 240 may include a cylindrical main swing rod connected to the telescopic driving cylinder, and a sub swing rod telescopically connected to the main swing rod, and the main swing rod and the sub swing rod are fastened together by a telescopic fastening bolt. Namely, the length of the whole telescopic swing arm 240 can be adjusted by the telescopic swing sub-rod through the telescopic swing main rod and the telescopic swing sub-rod, so that the position of the skin supporting wheel structure 250 can be adjusted, and the formed skin can be better supported.
Moreover, the skin support wheel structure 250 may include a support wheel mounting bracket disposed at an end of the telescoping swing arm 240, and a skin support tug 252 rotatably disposed on the support wheel mounting bracket, the skin support tug 252 being configured to tug the skin support tug during the sewing of the formed skin. The shaped skin 10 may be more conveniently supported and towed by rotating the skin support tow wheels 252. Furthermore, the skin support wheel structure 250 may include a skin feed sensor 254 disposed on one side of the support wheel mounting bracket, and the skin feed sensors 254 are disposed side by side on one side of the skin support tug 252. The skin material sensor 254 can detect the formed skin 10, and when detecting the formed skin 10, the telescopic driving cylinder structure 220 can be started to drive the skin supporting tug 252 to drive the formed skin 10 to move. Also, the skin support wheel structure 250 includes a skin motion sensor 256 provided at the other side of the support wheel mounting bracket, and a sensor sensitivity adjustment mechanism provided on the skin motion sensor 256. The moving speed of the formed skin 10 driven by the skin support tug 252 can be controlled by the skin motion sensing sensor 256, and can be adapted to the sewing speed by controlling the moving speed of the formed skin 10. Further, the sensitivity of the skin movement-inducing sensor 256 can be adjusted by the sensor sensitivity adjustment mechanism.
Through setting up the supplementary pay-off frock 200 that has structures such as frock base 210, flexible swing arm 240 and epidermis support tow boat 252, the sewing in-process, epidermis support tow boat 252 can support the operation of shaping epidermis 10 to the specific position under the effect that flexible drive cylinder structure 220 to can put down shaping epidermis 10 along certain direction at swing driving motor again when the sewing of commentaries on classics face, because of external resistance or pulling force lead to the quality problems of gauge needle inequality, skew and epidermis damage during avoiding the sewing.
The small-angle sewing device for the automobile interior molding skin comprises the following working processes: before sewing, the formed surface skin 10 is placed behind a narrow sewing table body, the position of the side-leaning foot guide plate 146 is adjusted through the angle adjusting bolt 143 and the foot guide position adjusting chute, so that the foot guide side plate of the side-leaning foot guide plate 146 is positioned in the thread guide characteristic groove 12 of the surface skin 10 to be sewn, meanwhile, the pressing force between the side-leaning foot guide plate 146 and the surface skin is adjusted under the control of the foot guide pressing cylinder 144, the surface skin can automatically and accurately walk along the thread guide characteristic groove 12, the purpose that the thread falls on the required accurate position is achieved, meanwhile, the fixed pressing force can effectively avoid the problems that sewing cannot advance due to the fact that the side-leaning foot guide plate 146 is tightly attached to the surface skin due to uneven thickness of the surface skin at the corner, or the sewing stitches deviate due to losing of guiding effect due to too loose attachment. The side guide foot plate 146 may be located at an adjustable position to the left or right of the sewing needle 124, whereby skin stitches may be located at different relative positions of the suture guide feature slot 12, increasing flexibility in suture design and operation.
When sewing, the surface skin is laid on the sewing needle plate 132 and spread, the sewing presser foot 122 is pressed down and is pressed down by the side foot guide plate 146, the sewing needle 124 descends to pass through the sewing groove and then takes out the bottom thread to do up-and-down reciprocating motion, and the sewing needle plate 132 is bigger, the area of the formed skin 10 which needs to be spread is bigger, so the edge outline of the sewing needle plate 132 is the position of the edge guide foot plate 146 of the sewing machine and the position of the outer sewing presser foot 124, which is a minimum size structure, when entering the small-angle sewing part 11, because of the small structure of the sewing needle plate along with the circular arc, the corner part of the surface skin can be smoothly spread on the sewing needle plate 132, the auxiliary feeding tool 200 can also normally and automatically feed, after the sewing presser foot 122 is pressed down, because the compression joint area is small, the defects of fold pressing, pull breaking and the like cannot be generated on the surface skin, and therefore the sewing with small angle is realized.
Because the molded surface skin 10 of the interior trim is usually large in size and the surface skin is made of soft materials, the surface skin can droop along the gravity center direction from the far end part of sewing in the sewing process, particularly the front end part can not be supported by hands, and the external pressure is generated in the surface skin sewing process due to the drooping gravity, so that the automatic feeding is interfered, the sewing stitches are uneven, and the surface skin can be broken. By using the auxiliary feeding tool 200, before sewing, the telescopic length of the telescopic swing arm 240 is adjusted, and the placement position of the auxiliary feeding tool 200 is determined. In the sewing process, the position of the epidermis is sensed through the epidermis incoming material sensor 254 on the tool, after the epidermis is sensed, the telescopic swing arm 240 runs to a fixed position under the control of the telescopic driving cylinder body and the rotating driving structure 230 and drags the epidermis through the epidermis supporting tug 252 on the telescopic swing arm 240, and in the advancing process of epidermis sewing, the movement speed of the telescopic swing arm 240 is controlled through the epidermis movement sensing sensor 254, so that the epidermis stably advances under the dragging of the epidermis supporting tug 252. When the epidermis is sewed to the face of turning fillet, flexible swing arm 240 descends after moving to the assigned position, and flexible swing arm 240 puts down the epidermis, makes the product face of waiting to sew be on a parallel with sewing needle board 132 all the time, avoids receiving the front end epidermis to block and can't normally advance during the face of turning, through the cooperation of above each device and technology, lets whole sewing process ability automatic stabilization accomplish to satisfy the appearance quality requirement. After sewing, the sewing thread is cut off, and then sewing is finished.
The technical scheme provided by the invention has the beneficial effects that: the small-angle transition sewing on different planes of the molded surface of the automotive interior can be carried out, namely, the small-radius corner structure or the small-radius near-end structure of the molded surface can be adaptively sewn, so that the appearance defects such as folds, damages, marks and the like are not easy to generate, the application range of the sewing thread on the interior is expanded, and a plurality of expected appearance models can be realized on the interior.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an automotive interior shaping epidermis low-angle sewing device which characterized in that includes:
the small-head sewing machine comprises a sewing machine frame, a small sewing machine head and a circular arc-shaped narrow sewing table structure which are arranged on the sewing machine frame in an up-down corresponding mode, and a guide pin structure which is arranged on the small sewing machine head and corresponds to the narrow sewing table structure; and the number of the first and second groups,
the auxiliary feeding tool is correspondingly matched with the small-head sewing machine; the auxiliary feeding tool comprises a tool base arranged beside the sewing machine frame, a rotary driving structure arranged on the tool base, a telescopic driving structure connected with the rotary driving structure, and a surface skin supporting wheel structure arranged at the end part of the telescopic driving structure, wherein the surface skin supporting wheel structure is correspondingly matched with the narrow sewing table structure.
2. The automotive interior formed skin small-angle sewing device according to claim 1, wherein the narrow sewing table structure comprises a cylindrical narrow sewing table body which is protrudingly arranged on the sewing machine frame and is positioned at the bottom of the small sewing machine head, and a sewing table needle plate which is attached to the top surface of the narrow sewing table body, wherein an arc-shaped sewing groove is formed in the sewing table needle plate;
the bottom of the small sewing machine head is provided with a sewing needle and a sewing presser foot, the sewing needle vertically corresponds to the arc-shaped sewing groove, and the sewing presser foot vertically corresponds to the sewing needle plate.
3. The automotive interior formed skin small-angle sewing device of claim 2, wherein the guide foot structure comprises a guide foot pressing structure arranged on the side of the small sewing machine head, and a side-close guide foot plate connected with the guide foot pressing structure, wherein the side-close guide foot plate is arranged corresponding to the sewing needle plate and is positioned on one side of the sewing needle.
4. The automotive interior formed skin small angle sewing device of claim 3, wherein the guide pin pressing structure comprises a guide pin mounting bracket provided at a side of the small sewing machine head, and a guide pin pressing cylinder provided on the guide pin mounting bracket;
the side guide foot plate comprises a guide foot connecting plate connected with the guide foot pressing cylinder and a guide foot side plate arranged on one side of the guide foot connecting plate in a protruding mode, and the guide foot side plate corresponds to the sewing needle plate and is used for corresponding to a thread guide characteristic groove in the forming surface.
5. The automotive interior profiled skin small angle sewing device of claim 4, wherein the guide foot mount is rotatably connected to the small sewing machine head by an angle adjusting bolt;
the guide pin connecting plate is provided with a guide pin position adjusting sliding groove, and the end part of the guide pin pressing cylinder is connected into the guide pin position adjusting sliding groove through a connecting bolt.
6. The automotive interior molding skin small-angle sewing device according to any one of claims 1 to 5, wherein the rotation driving structure comprises a swing driving motor arranged on the tooling base and a swing bracket connected with the swing driving motor;
the telescopic driving structure comprises a telescopic driving cylinder structure connected with the swing support and a telescopic swing arm transversely connected with the telescopic driving cylinder, and the skin supporting wheel structure is arranged at the end part of the telescopic swing arm.
7. The automotive interior formed skin small-angle sewing device of claim 6, wherein the telescopic driving cylinder structure comprises a cylinder mounting bracket connected with the swing bracket, and a telescopic driving cylinder block with a displacement sensor arranged on the cylinder mounting bracket;
the telescopic swing arm comprises a cylindrical swing main rod connected with the telescopic driving cylinder body and a swing sub-rod telescopically connected with the swing main rod, and the swing main rod and the swing sub-rod are connected and fastened through a telescopic adjusting fastening bolt.
8. The automotive interior formed skin small-angle sewing device of claim 6, wherein the skin support wheel structure comprises a support wheel mounting bracket arranged at an end of the telescopic swing arm, and a skin support tug rotatably arranged on the support wheel mounting bracket, wherein the skin support tug is used for dragging the formed skin during sewing.
9. The automotive interior molded skin small angle sewing device of claim 8, wherein the skin support wheel structure includes a skin feed sensor disposed on one side of the support wheel mount, the skin feed sensor being disposed side-by-side on one side of the skin support tug.
10. The automotive interior molded skin small angle sewing apparatus of claim 9, wherein the skin support wheel structure includes a skin motion sensor disposed on the other side of the support wheel mount, and a sensor sensitivity adjustment mechanism disposed on the skin motion sensor.
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| CN202010879325.7A CN112210913B (en) | 2020-08-27 | 2020-08-27 | Small-angle sewing device for automobile interior trim molding skin |
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| CN202010879325.7A CN112210913B (en) | 2020-08-27 | 2020-08-27 | Small-angle sewing device for automobile interior trim molding skin |
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| CN112210913B CN112210913B (en) | 2022-03-15 |
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| CN112210913B (en) | 2022-03-15 |
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