Patch pocket machine edge folding mechanism for fillet shirt pocket

Abstract

The utility model discloses a pocket patching machine edge folding mechanism for a fillet shirt pocket. The pocket patching machine edge folding mechanism comprises a positioning block, a material pressing assembly, an edge folding assembly and an overturning and lifting assembly, the material pressing assembly comprises a bag pressing plate connected with the positioning block. The edge folding assembly comprises a U-shaped plate, two bag edge folding pieces, a bag bottom folding piece, two lower bag corner folding assemblies and a plurality of movable air cylinders, wherein the U-shaped plate is arranged on the outer side of the bag pressing plate, and the two ends of the U-shaped plate are connected with the positioning blocks respectively. The two bag edge folding pieces, the bag bottom folding piece, the two lower bag corner folding assemblies and the movable air cylinders are distributed on the U-shaped plate in a U shape. Each lower bag corner bag folding assembly comprises an upper arc-shaped bag folding piece and a lower arc-shaped bag folding piece, and the inner end parts of the upper arc-shaped bag folding piece and the lower arc-shaped bag folding piece are respectively in a concave arc shape; the overturning and lifting assembly can be used for driving the material pressing assembly and the edge folding assembly to be overturned and lifted up and down. According to the utility model, the corresponding positions of the pocket edges on the two sides, the pocket bottom and the two lower pocket corners of the pocket cloth can be conveniently folded, and the two lower pocket corners are arc-shaped after being folded, so that the manufacturing requirement of the fillet shirt pocket is met.

Description

Technical Field

[0001] The utility model relates to the technical field of pocket patching machines, in particular to a folding mechanism of a pocket patching machine for rounded shirt pockets. Background Art

[0002] The pocket patching machine can be used for sewing pockets on jeans, work clothes, shirts and other clothing. Flat stitch sewing and bartacking can be completed at one time. It is suitable for sewing various back pockets of jeans, work clothes pockets and shirt pockets.

[0003] In a pocket sticking machine, a folding mechanism is generally used to fold the pocket fabric to be sewn to facilitate subsequent processes. Application publication number CN110699864A discloses a high-precision automatic iron-free pocket sticking machine, which specifically discloses a work surface, a bag sheet auxiliary mechanism, a flip mechanism, a feeding unit, a sewing machine head, a display screen, and a frame. The work surface is welded to the top surface of the frame, and the bag sheet auxiliary mechanism and the flip mechanism are installed on one side of the frame through the work surface. The upper surface of the work surface is installed with a feeding unit through a welding part, and the feeding unit includes an X-axis moving component, a Y-axis moving component and a pressing component. One side of the pressing component is located on the upper surface of the work surface and a sewing machine head is provided. The flipping mechanism includes a flipping frame, a driving arm, a seat bearing, a flipping cylinder, a falling cylinder, a square bearing seat, a flipping shaft, and a bag folding assembly; the bag folding assembly includes a pressing frame, a bag folding cylinder, a bag folding plate, an electromagnet, and a bag pressing plate. A bag pressing plate is provided in the middle position inside the pressing frame, and an electromagnet is provided in the middle position inside the bag pressing plate. Multiple bag folding cylinders are provided on the pressing frame, and bag folding plates are installed on the driving rods of the multiple bag folding cylinders, and the bag folding plates are located between the pressing frame and the bag pressing plate.

[0004] Since many shirt pockets have two lower pocket corners on both sides of the pocket bottom set to be arc-shaped, the pockets can look more beautiful. However, the folding assembly of the flip mechanism in the above-mentioned high-precision automatic ironing pocket sticking machine cannot fold the two lower pocket corners on both sides of the pocket bottom of the pocket fabric into arcs during the folding process, and thus cannot meet the production requirements of such rounded-corner shirt pockets. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a folding mechanism of a pocket patching machine for rounded-corner shirt pockets, which is improved so that it can conveniently fold the corresponding positions of the pocket edges, the pocket bottom and the two lower pocket corners on both sides of the pocket fabric, and the two lower pocket corners are both arc-shaped after folding, so as to meet the production requirements of rounded-corner shirt pockets.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A folding mechanism of a pocket-sticking machine for rounded-corner shirt pockets, comprising a positioning block and a material pressing assembly, a folding assembly and a flipping and lifting assembly respectively connected to the positioning block; the material pressing assembly comprises a bag pressing plate connected to the positioning block; the folding assembly comprises a U-shaped plate matchedly arranged on the outer side of the bag pressing plate and connected to the positioning block at both ends, and two bag edge folding pieces, a bag bottom folding piece, two lower bag corner folding pieces and a plurality of moving cylinders uniformly distributed on the U-shaped plate in a U shape; each of the lower bag corner folding pieces comprises an upper arc-shaped bag folding piece and a lower arc-shaped bag folding piece, the inner ends of which are respectively in the shape of an inward concave arc; the upper arc-shaped bag folding piece is located above the bag edge folding piece and the bag bottom folding piece, and the lower ... bottom folding piece and the bag bottom folding piece, and the upper arc-shaped bag folding piece is located above the bag edge folding piece and the bag bottom folding piece, and the upper arc-shaped bag folding piece is located above the bag edge folding piece and the bag bottom folding piece, and the upper arc-shaped bag folding piece is located above the The bag sheet is located below the bag edge folding sheet and the bag bottom folding sheet; after folding, the inner end of the lower arc folding sheet is closer to the bag pressing plate than the inner end of the upper arc folding sheet; each of the bag edge folding sheet, the bag bottom folding sheet, the upper arc folding sheet and the lower arc folding sheet is respectively connected to a movable cylinder to achieve the effect of inside and outside movement, so that it is convenient to fold the corresponding positions of the bag edges, the bag bottom and the two lower bag corners on both sides of the pocket cloth, and the upper arc folding sheet and the lower arc folding sheet can be used to fold the two lower bag corners into an arc shape through cooperation; the flipping and lifting assembly can be used to drive the positioning block to flip up and down and lift up and down, and simultaneously drive the pressing assembly and the folding assembly to flip up and down and lift up and down.

[0008] The following technical solutions are also included:

[0009] Furthermore, the material pressing assembly further comprises a mounting plate detachably mounted on the positioning block; the bag pressing plate is mounted on the mounting plate in an adjustable manner up and down. The above arrangement can facilitate the mounting plate to be disassembled and assembled, so that the bag pressing plate can be used for pocket fabrics of different sizes.

[0010] Furthermore, the material pressing assembly further includes three adjusting bolts; the three adjusting bolts are threadedly connected to the mounting plate in a triangular distribution, and the lower end of the rod of each adjusting bolt passes through the mounting plate and is threadedly connected to the bag pressing plate. The above arrangement can facilitate the adjustment of the position of the mounting plate.

[0011] Furthermore, an electromagnet is arranged at the middle position of the bag pressing plate.

[0012] Furthermore, the folding assembly also includes two upper corner folding pieces distributed at both ends of the U-shaped plate, and each of the upper corner folding pieces is respectively connected to one of the movable cylinders to realize the flipping of the edges of the upper corner folding pieces. The folding ends of the two upper corner folding pieces can be used to reversely fold the upper corners of the bag edge after the pocket fabric completes the first folding.

[0013] Furthermore, each of the upper bag corner folding pieces is connected to the corresponding moving cylinder through a linkage assembly; the linkage assembly includes a V-shaped rod and a linkage rod; the middle part of the V-shaped rod is movably mounted on a positioning column, and one end of the V-shaped rod is connected to the connecting end of the upper bag corner folding piece; the two ends of the linkage rod are respectively hinged to the other end of the V-shaped rod and the output end of the moving cylinder. The above arrangement can facilitate the moving cylinder to drive the upper bag corner folding piece to rotate using the V-shaped rod and the linkage rod.

[0014] Furthermore, each of the movable cylinders corresponding to the bag edge folding piece, bag bottom folding piece, upper arc folding piece and lower arc folding piece can be adjusted inward and outward on the U-shaped plate, and the adjustment direction of each movable cylinder is the same as the movement direction of the corresponding bag edge folding piece, bag bottom folding piece, upper arc folding piece and lower arc folding piece; each of the movable cylinders corresponding to the upper bag corner folding piece can be adjusted left and right on the U-shaped plate. The above arrangement can facilitate the adjustment of the inward and outward movement of each folding piece, and through the inward and outward adjustment of the folding piece, each folding piece can be suitable for folding the edges of pocket fabrics of different sizes, which is highly practical.

[0015] Furthermore, a plurality of strip-shaped adjustment holes are provided on the U-shaped plate, and a tension bolt is passed through each of the strip-shaped adjustment holes; an adjustment plate is installed on each of the movable cylinders, and each of the adjustment plates is threadedly connected to two corresponding tension bolts; the extension direction of each of the strip-shaped adjustment holes is the same as the adjustment direction of the corresponding movable cylinder. The above arrangement can facilitate the position adjustment of each folding bag sheet.

[0016] Furthermore, the flipping and lifting assembly includes a flipping cylinder, a lifting cylinder and a flip seat; the lower end of the rear side of the flip seat is hinged on a positioning hinge shaft; the cylinder body of the flipping cylinder is hinged on a hinge seat and the output shaft of the flipping cylinder is hinged to the upper end of the rear side of the flip seat; the lifting cylinder is installed on the front side of the flip seat and the output shaft of the lifting cylinder is downwardly connected to the positioning block. The above arrangement can be used to conveniently drive the positioning block, the pressing assembly and the folding assembly to flip up and down and lift up and down.

[0017] Furthermore, the two ends of the U-shaped plate are correspondingly connected to the positioning block via two positioning bolts, so that the positioning block can be easily disassembled and assembled.

[0018] The beneficial effects of the utility model are:

[0019] (i) The utility model can conveniently use the mobile cylinder to correspondingly drive the bag edge folding piece, the bag bottom folding piece, the upper arc folding piece and the lower arc folding piece, so as to realize the folding of the bag edge, the bag bottom and the two lower pocket corners on both sides of the bag bottom of the pocket fabric of the shirt pocket, and the two lower pocket corners will form arc-shaped lower pocket corners after being folded in sequence by the upper arc folding piece and the lower arc folding piece, which has high aesthetics. Since the pocket fabric of the shirt is relatively thin, the formation of the arc-shaped pocket corner can be ensured by the arrangement of the upper arc folding piece and the lower arc folding piece, so as to meet the production requirements of the rounded shirt pocket; the flipping and lifting component can be used to conveniently drive the pressing component and the folding component to flip up and down and lift up and down.

[0020] (ii) The utility model can adjust the height of the bag pressing plate and correct the balance by means of three upper and lower adjusting bolts, so as to ensure that the bag pressing plate can match and fit the pocket fabric.

[0021] (iii) Each folding bag of the utility model can be adjusted to move inwards and outwards, and by adjusting the folding bag pieces inwards and outwards, each folding bag piece can be suitable for folding pocket fabrics of different sizes, which is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the structure of the utility model after removing the flip lifting component Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the structure of the utility model after removing the flip lifting component Figure 2 ;

[0026] Figure 5 It is a partial structure diagram of the utility model. Figure 1 ;

[0027] Figure 6 It is a partial structure diagram of the utility model. Figure 2 ;

[0028] Figure 7 It is a partial structure diagram of the utility model. Figure 3 ;

[0029] Figure 8 This is a diagram after the pocket fabric is folded.

[0030] Reference numerals:

[0031] 1. Positioning block;

[0032] 2. Material pressing assembly; 21. Bag pressing plate; 22. Mounting plate; 23. Adjusting bolt; 24. Electromagnet;

[0033] 3. Folding assembly; 31. U-shaped plate; 32. Bag side folding piece; 33. Bag bottom folding piece; 34. Upper arc folding piece; 35. Lower arc folding piece; 36. Moving cylinder; 37. Upper bag corner folding piece; 38. V-shaped rod; 39. Linking rod; 40. Positioning column;

[0034] 4. Turning and lifting assembly; 41. Turning cylinder; 42. Lifting cylinder; 43. Turning seat; 44. Articulated shaft; 45. Articulated seat;

[0035] 5. Adjustment plate; 6. Strip adjustment hole; 7. Tension bolt; 8. Positioning bolt; 9. Clearance groove. DETAILED DESCRIPTION

[0036] The specific implementation methods according to the present disclosure are described in detail below in conjunction with the accompanying drawings.

[0037] like Figure 1-Figure 7As shown, a folding mechanism of a pocket-sticking machine for rounded-corner shirt pockets comprises a positioning block 1 and a material pressing assembly 2, a folding assembly 3 and a flipping and lifting assembly 4 respectively connected to the positioning block 1; the material pressing assembly 2 comprises a bag pressing plate 21 connected to the positioning block 1 and matching the shape of the pocket; the folding assembly 3 comprises a U-shaped plate 31 matchedly arranged on the outside of the bag pressing plate 21 and connected to the positioning block 1 at both ends, and two bag edge folding pieces 32, a bag bottom folding piece 33, two lower bag corner folding pieces and a plurality of moving cylinders 36 uniformly distributed on the U-shaped plate 31 in a U shape; each lower bag corner folding piece comprises an upper arc folding piece 34 and a lower arc folding piece 35, the inner ends of which are respectively in an inwardly concave arc shape; the upper arc folding piece 31 34 is located above the bag edge folding piece 32 and the bag bottom folding piece 33, and the lower arc folding piece 35 is located below the bag edge folding piece 32 and the bag bottom folding piece 33; after folding, the inner end of the lower arc folding piece 35 is closer to the bag pressing plate 21 than the inner end of the upper arc folding piece 34; each bag edge folding piece 32, bag bottom folding piece 33, upper arc folding piece 34 and lower arc folding piece 35 are respectively connected to a moving cylinder 36 to achieve the effect of inside and outside movement, so that the corresponding positions of the bag edges, bag bottom and two lower bag corners on both sides of the pocket cloth can be conveniently folded; the turning and lifting component 4 can be used to drive the positioning block 1 to turn up and down and lift up and down, and synchronously drive the pressing component 2 and the folding component 3 to turn up and down and lift up and down. Through the above arrangement, the movable cylinder 36 can be conveniently used to correspondingly drive the bag edge folding piece 32, the bag bottom folding piece 33, the upper arc folding piece 34 and the lower arc folding piece 35, so as to realize the folding of the bag edge, the bag bottom and the two lower bag corners on both sides of the bag bottom of the pocket cloth, and the two lower bag corners will form arc-shaped lower bag corners after being folded in sequence by the upper arc folding piece 34 and the lower arc folding piece 35, which has high aesthetics. Since the pocket cloth of the shirt is relatively thin, the formation of the arc-shaped bag corner can be ensured by the arrangement of the upper arc folding piece 34 and the lower arc folding piece 35 to meet the production requirements of rounded shirt pockets; the flipping and lifting component 4 can be used to conveniently drive the pressing component 2 and the folding component 3 to flip up and down and lift up and down.

[0038] like Figure 6 As shown, specifically, in order to prevent the upper arc-shaped bag folding piece 34 from not being able to move normally and to ensure the folding effect, a clearance groove 9 is provided on the top surface of one end of each bag side folding piece 32 and the top surfaces of both ends of the bag bottom folding piece 33, and the two sides of each upper arc-shaped bag folding piece 34 are correspondingly inserted into the corresponding two clearance grooves 9, so that the movement of the upper arc-shaped bag folding piece 34 is smoother, and the upper arc-shaped bag folding piece 34 can stably perform preliminary folding on the lower bag corner, and then use the lower arc-shaped bag folding piece 35 for secondary folding.

[0039] like Figure 1-Figure 5As shown, the material pressing assembly 2 also includes a mounting plate 22 detachably mounted on the positioning block 1, and the bag pressing plate 21 is mounted on the mounting plate 22 in an adjustable manner. Therefore, the bag pressing plate 21 is connected to the positioning block 1 through the mounting plate 22, and because the mounting plate 22 is detachable, the bag pressing plate 21 can be replaced synchronously so as to be replaced with a bag pressing plate 21 of different sizes, so that the bag pressing plate 21 can be used for pocket fabrics of different sizes. In addition, since the pocket fabric of a shirt is relatively thin, by setting the bag pressing plate 21 to be adjustable up and down, it is convenient to adjust the bag pressing plate 21 up and down, so that the bag pressing plate 21 can be adjusted according to the pocket fabrics of shirts of different thicknesses, so as to prevent the bag pressing plate 21 from not being able to fit tightly against the pocket fabric after being lowered.

[0040] like Figure 1-Figure 5 As shown, the material pressing assembly 2 also includes three adjusting bolts 23; the three adjusting bolts 23 are threadedly connected to the mounting plate 22 in a triangular distribution, and the lower end of the rod of each adjusting bolt 23 passes through the mounting plate 22 and is threadedly connected to the bag pressing plate 21. Preferably, one adjusting bolt 23 is located in the front, and the other two adjusting bolts 23 are distributed left and right in the rear. Through the three adjusting bolts 23 set above, the height of the bag pressing plate 21 can be adjusted and the balance of the bag pressing plate 21 can be corrected by screwing the three adjusting bolts 23 up and down respectively, that is, the adjustment of the bag pressing plate 21 can be completed conveniently. When in use, after screwing an adjusting bolt 23 up and down, the corresponding position of the bag pressing plate 21 can be moved up and down. Therefore, the effect of adjusting the height of the bag pressing plate 21 and correcting the balance can be achieved by only using the three adjusting bolts 23 up and down, so as to ensure that the bag pressing plate 21 can match and fit the pocket fabric.

[0041] like Figure 4 As shown, an electromagnet 24 is also provided in the middle of the bag pressing plate 21, so that the electromagnet 24 can be magnetically attracted to the bag sheet fixing plate (not shown) on the bag sheet auxiliary mechanism (not shown) after being energized, so that the bag pressing plate 21 can be closely attached to the bag sheet fixing plate, and the pocket fabric on the bag sheet fixing plate can be fixed and not easily loosened. Of course, when the electromagnet 24 is powered off, it will lose its magnetic force, so as to loosen the bag sheet fixing plate.

[0042] like Figure 1-Figure 7As shown, the folding assembly 3 also includes two upper bag corner folding pieces 37 distributed at both ends of the U-shaped plate 31, and each upper bag corner folding piece 37 is respectively connected to a movable cylinder 36 to realize the turning of the upper bag corner folding piece 37. The folding ends of the two upper bag corner folding pieces 37 can be used to reversely fold the upper bag corners of the bag edge after the pocket fabric has completed the first folding. Specifically, the folding end of the upper bag corner folding piece 37 is located above the folding end of the bag edge folding piece 32. By providing two upper bag corner folding pieces 37, the two upper bag corners can be folded for the second time (i.e., reverse folding), thereby preventing the upper bag corners from being exposed outside the pocket and affecting the appearance.

[0043] Of course, the bag side folding piece 32 , the bag bottom folding piece 33 , the upper arc-shaped bag folding piece 34 , the lower arc-shaped bag folding piece 35 and the upper bag corner folding piece 37 are all located below the bag pressing plate 21 .

[0044] like Figure 1-Figure 7 As shown, each upper corner folding piece 37 is connected to the corresponding moving cylinder 36 through a linkage assembly; the linkage assembly includes a V-shaped rod 38 and a linkage rod 39; the middle part of the V-shaped rod 38 is movably mounted on a positioning column 40, and one end of the V-shaped rod 38 is connected to the connecting end of the upper corner folding piece 37; the two ends of the linkage rod 39 are respectively hinged to the other end of the V-shaped rod 38 and the output end of the moving cylinder 36. The above arrangement can facilitate the moving cylinder 46 to drive the upper corner folding piece 37 to flip through the transmission of the V-shaped rod 38 and the linkage rod 39, so that the upper corner can be reversely folded. Moreover, compared with the traditional method of using a rotating cylinder to drive the upper corner folding piece to rotate, this method is more stable and has better accuracy, that is, it can achieve better upper corner folding.

[0045] like Figure 1-Figure 7 As shown, each movable cylinder 36 corresponding to each bag edge folding piece 32, bag bottom folding piece 33, upper arc folding piece 34 and lower arc folding piece 35 can be adjusted inward and outward on the U-shaped plate 31, and the adjustment direction of each movable cylinder 36 is the same as the movement direction of the corresponding bag edge folding piece 32, bag bottom folding piece 33, upper arc folding piece 34 and lower arc folding piece 35; each movable cylinder 36 corresponding to each upper bag corner folding piece 37 can be adjusted left and right on the U-shaped plate 31. The above-mentioned arrangement can facilitate the adjustment of the inward and outward movement of each bag folding piece, and through the inward and outward adjustment of the bag folding piece, each bag folding piece can be suitable for folding the edges of pocket fabrics of different sizes, which is highly practical.

[0046] like Figure 1-Figure 7As shown, a plurality of strip-shaped adjustment holes 6 are arranged on the U-shaped plate 31, and a tension bolt 7 is inserted in each strip-shaped adjustment hole 6; an adjustment plate 5 is installed on each movable cylinder 36, and each adjustment plate 5 is respectively threadedly connected with two corresponding tension bolts 7; the extension direction of each strip-shaped adjustment hole 6 is the same as the adjustment direction of its corresponding movable cylinder 36. The above arrangement can conveniently complete the position adjustment of each bag folding piece. When the corresponding two tension bolts 7 are loosened, the adjustment plate 5 can be moved along the extension direction of the strip-shaped adjustment hole 6 and the tension bolt 7 can be moved in the corresponding strip-shaped adjustment hole 6, and the corresponding movable cylinder 36 and the corresponding bag folding piece are moved synchronously, so as to complete the position adjustment of the bag folding piece. After the adjustment is completed, the tension bolt 7 and the adjustment plate 5 can be tightened to fix the adjustment plate 5, that is, the corresponding movable cylinder 36 and the bag folding piece are fixed synchronously.

[0047] like Figure 4 As shown, preferably, for the convenience of setting, the two movable cylinders 36 corresponding to the upper arc-shaped bag folding piece 34 and the lower arc-shaped bag folding piece 35 are installed on the same adjustment plate 5, that is, when the adjustment plate 5 is adjusted, the two movable cylinders 36 corresponding to the upper arc-shaped bag folding piece 34 and the lower arc-shaped bag folding piece 35 can be adjusted synchronously, thereby achieving the effect of synchronously adjusting the upper arc-shaped bag folding piece 34 and the lower arc-shaped bag folding piece 35.

[0048] like Figure 1-Figure 1 As shown, the flipping and lifting assembly 4 includes a flipping cylinder 41, a lifting cylinder 42 and a flip seat 43; the lower end of the rear side of the flip seat 43 is hinged on a positioning hinge shaft 44; the cylinder body of the flipping cylinder 41 is hinged on a hinge seat 45 and the output shaft of the flipping cylinder 41 is hinged to the upper end of the rear side of the flip seat 43; the lifting cylinder 42 is installed on the front side of the flip seat 43 and the output shaft of the lifting cylinder 42 is downwardly connected to the positioning block 1. Through the above arrangement, the flipping cylinder 41 can be conveniently used to drive the flip seat 43 to flip up and down, and the flip seat 43 can drive the positioning block 1, the pressing assembly 2 and the folding assembly 3 to flip up and down synchronously through the lifting cylinder 42. In addition, during the extension and retraction process of the output shaft of the lifting cylinder 42, the positioning block 1, the pressing assembly 2 and the folding assembly 3 can be driven to rise and fall synchronously.

[0049] like Figure 1-Figure 2 As shown, in order to improve the stability between the positioning block 1 and the turning seat 43 during movement, a guide rod can be further provided between the two.

[0050] like Figure 1-Figure 2 As shown, the two ends of the U-shaped plate 31 are correspondingly connected to the positioning block 1 through two positioning bolts 8, so that the positioning block 1 can be easily disassembled and assembled.

[0051] Combination Figure 8, the specific use principle of the utility model is introduced below to facilitate understanding of the utility model:

[0052] First, the folding device of the pocket patching machine for shirt pockets is installed at the corresponding position; next, the shirt material sheet is laid on the workbench (not shown in the figure), and the pocket fabric of the shirt pocket is placed on the bag sheet fixing plate (not shown in the figure) extended from the bag sheet auxiliary mechanism (not shown in the figure); next, the flipping cylinder 41 drives the material pressing component 2 and the folding component 3 to flip downward to a horizontal state; next, the lifting cylinder 42 drives the material pressing component 2 and the folding component 3 to descend a certain distance until the bag pressing plate 21 is covered on the bag sheet fixing plate and the bag sheet fixing plate is suctioned by the energized electromagnet 24, thereby fixing the pocket fabric; next, through the drive of the corresponding moving cylinders 36, the bag bottom folding piece 33 and the two bag side folding pieces 32 move in sequence and fold the bag bottom position and the bag sides of the pocket fabric in sequence, and then the two upper arc-shaped bag folding pieces 34 move inwardly respectively. The two lower pocket corners of the pocket fabric are folded in the state of folding until the two upper arc-shaped folding pieces 34 move to the preset position and stop. Then, the two lower arc-shaped folding pieces 35 also fold the two lower pocket corners of the pocket fabric for the second time in the state of moving inwardly inclined, so that the two lower pocket corners are perfectly formed, that is, the lower pocket corners are in an arc shape. When the two lower arc-shaped folding pieces 35 move to the preset position and stop, the inner ends of the two lower arc-shaped folding pieces 35 are closer to the bag pressing plate 21 than the inner ends of the two upper arc-shaped folding pieces 34, ensuring the formation of the two lower pocket corners. In the next step, the two upper pocket corner folding pieces 37 are turned inward by the linkage of the V-shaped rod 38 and the connecting rod 39, so that the positions of the two upper pocket corners after the first folding of the two pocket edges are reversely folded by the two upper pocket corner folding pieces 37, so that the two upper pocket corners will not be exposed outside the pocket. After the folding is completed, the pocket fabric is Figure 8 The state shown; next, the pressing assembly 2, the folding assembly 3 and the bag piece fixing plate descend, and press the folded pocket fabric on the corresponding position of the material piece; next, each moving cylinder 36 is reset, and the lifting cylinder 42 and the flip cylinder 41 are reset in turn; finally, a material moving assembly is used to move the folded pocket fabric and the material piece to the sewing machine head for sewing.

[0053] The scope of the present invention is not defined by the above-described embodiments but by the appended claims and their equivalents.

Claims

1. A folding mechanism for a pocket patching machine for rounded shirt pockets, characterized in that: It includes a positioning block and a material pressing assembly, a folding assembly and a flipping and lifting assembly respectively connected to the positioning block; The material pressing assembly comprises a bag pressing plate connected to the positioning block; The folding assembly includes a U-shaped plate matched with the outer side of the bag pressing plate and connected to the positioning blocks at both ends, and two bag side folding pieces, a bag bottom folding piece, two lower bag corner folding pieces and a plurality of moving cylinders evenly distributed on the U-shaped plate in a U-shape; each of the lower bag corner folding pieces includes an upper arc-shaped bag folding piece and a lower arc-shaped bag folding piece, the inner ends of which are respectively concave arc-shaped; the upper arc-shaped bag folding piece is located above the bag side folding piece and the bag bottom folding piece, and the lower arc-shaped bag folding piece is located above the bag side folding piece and below the bag bottom folding piece; after folding, the inner end of the lower arc folding piece is closer to the bag pressing plate than the inner end of the upper arc folding piece; each of the bag edge folding piece, the bag bottom folding piece, the upper arc folding piece and the lower arc folding piece is respectively connected to one of the moving cylinders to achieve the effect of inside-out movement, so that the corresponding positions of the bag edges, the bag bottom and the two lower bag corners on both sides of the pocket fabric can be conveniently folded, and the upper arc folding piece and the lower arc folding piece can be used to fold the two lower bag corners into arcs through cooperation; The flipping and lifting assembly can be used to drive the positioning block to flip up and down and to lift up and down, and simultaneously drive the pressing assembly and the folding assembly to flip up and down and to lift up and down.

2. The folding mechanism of the pocket-sticking machine for rounded shirt pockets according to claim 1, characterized in that: The material pressing assembly also includes a mounting plate detachably mounted on the positioning block; the bag pressing plate is mounted on the mounting plate in an adjustable manner up and down.

3. The folding mechanism of the pocket-sticking machine for rounded shirt pockets according to claim 2, characterized in that: The material pressing assembly also includes three adjusting bolts; the three adjusting bolts are threadedly connected to the mounting plate in a triangular distribution, and the lower end of the rod of each adjusting bolt passes through the mounting plate and is threadedly connected to the bag pressing plate.

4. The folding mechanism of the pocket-sticking machine for rounded shirt pockets according to claim 1, characterized in that: An electromagnet is also arranged at the middle position of the bag pressing plate.

5. The folding mechanism of the pocket-sticking machine for rounded shirt pockets according to claim 1, characterized in that: The folding assembly also includes two upper corner folding pieces distributed at both ends of the U-shaped plate, and each of the upper corner folding pieces is respectively connected to one of the movable cylinders to realize the turning over of the upper corner folding pieces. The folding ends of the two upper corner folding pieces can be used to reversely fold the upper corners of the bag edge after the pocket fabric completes the first folding.

6. The folding mechanism of the pocket-sticking machine for rounded shirt pockets according to claim 5, characterized in that: Each of the upper bag corner folded bag pieces is transmission-connected to the corresponding movable cylinder via a linkage assembly; the linkage assembly comprises a V-shaped rod and a linkage rod; the middle portion of the V-shaped rod is movably mounted on a positioning column, and one end of the V-shaped rod is connected to the connecting end of the upper bag corner folded bag piece; the two ends of the linkage rod are respectively hinged to the other end of the V-shaped rod and the output end of the movable cylinder.

7. The folding mechanism of the pocket-sticking machine for rounded shirt pockets according to claim 5, characterized in that: Each of the movable cylinders connected to each of the bag side folding pieces, bag bottom folding pieces, upper arc folding pieces and lower arc folding pieces can be adjusted inward and outward on the U-shaped plate, and the adjustment direction of each movable cylinder is the same as the moving direction of the corresponding bag side folding piece, bag bottom folding piece, upper arc folding piece and lower arc folding piece; Each of the movable cylinders correspondingly connected to each of the upper bag corner folding bag pieces can be adjusted left and right on the U-shaped plate.

8. The folding mechanism of the pocket-sticking machine for rounded shirt pockets according to claim 7, characterized in that: A plurality of strip-shaped adjustment holes are arranged on the U-shaped plate and a tensioning bolt is passed through each of the strip-shaped adjustment holes; an adjustment plate is installed on each of the mobile cylinders and each of the adjustment plates is threadedly connected to the corresponding two tensioning bolts; the extension direction of each of the strip-shaped adjustment holes is the same as the adjustment direction of the corresponding mobile cylinder.

9. The folding mechanism of the pocket-sticking machine for rounded shirt pockets according to claim 1, characterized in that: The flipping and lifting assembly includes a flipping cylinder, a lifting cylinder and a flip seat; the lower end of the rear side of the flip seat is hinged on a positioning hinge shaft; the cylinder body of the flip cylinder is hinged on a hinge seat and the output shaft of the flip cylinder is hinged to the upper end of the rear side of the flip seat; the lifting cylinder is installed on the front side of the flip seat and the output shaft of the lifting cylinder is downwardly connected to the positioning block.

10. The folding mechanism of the pocket-sticking machine for rounded shirt pockets according to claim 1, characterized in that: The two ends of the U-shaped plate are correspondingly connected to the positioning block via two positioning bolts.

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