CN209907014U

CN209907014U - Template sewing machine

Info

Publication number: CN209907014U
Application number: CN201920662573.9U
Authority: CN
Inventors: 张春木; 洪鹏; 游鲁浙; 潘忠; 徐程鹏
Original assignee: Zhejiang Resistant Electromechanical Science And Technology Co Ltd
Current assignee: Zhejiang Resistant Electromechanical Science And Technology Co Ltd
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-01-07
Anticipated expiration: 2029-05-09

Abstract

The utility model belongs to the technical field of sewing equipment, in particular to a template sewing machine; the machine head assembly is fixedly connected with the upper rotating shaft, the rotating shuttle assembly is fixedly connected with the lower rotating shaft, a first synchronous belt wheel is arranged on the upper rotating shaft, a second synchronous belt wheel is arranged on the lower rotating shaft, a third synchronous belt wheel and a fourth synchronous belt wheel are arranged at the upper end and the lower end of the vertical shaft, the upper rotating shaft and the lower rotating shaft are connected with the vertical shaft through an upper synchronous belt and a lower synchronous belt, more than two synchronous belt positioning pieces are circumferentially distributed on the periphery of the first synchronous belt wheel, tensioning mechanisms are respectively arranged on one side or two sides of the upper synchronous belt, the upper box body is slidably connected on a fixing plate, a lifting cylinder is arranged on the fixing plate and is connected with the upper box body, the lifting cylinder drives the machine head assembly to move upwards, the tensioning mechanisms relieve the tensioning of the upper synchronous belt, the first synchronous; the utility model discloses a straining device controls the lift of the elasticity degree cooperation aircraft nose assembly of going up the hold-in range, and easy operation is convenient.

Description

Template sewing machine

The technical field is as follows:

the utility model belongs to the technical field of make up equipment, refer in particular to a template sewing machine.

Background art:

the template sewing machine is sewing equipment which is practically applied by combining a clothing template technology. Stencil sewing machines generally include a head assembly and a rotating shuttle assembly. The machine head assembly is arranged on the machine shell, and the rotating shuttle assembly is arranged on the base. The head assembly and the rotating shuttle assembly often need to rotate during the sewing process. Most of the current machine head assembly and the rotating shuttle assembly are driven to rotate by independent driving mechanisms.

The invention content is as follows:

the utility model aims at providing a can realize driving aircraft nose assembly and rotating shuttle subassembly synchronous rotation by synchronous belt drive mechanism, can solve the template sewing machine of aircraft nose assembly lift problem again.

The utility model discloses a realize like this:

the template sewing machine comprises a machine shell, a base, a machine head assembly and a rotating shuttle assembly, wherein the machine shell comprises a vertical column part and a cantilever part, the machine head assembly is fixedly connected with an upper rotating shaft, the upper rotating shaft is rotatably connected in an upper box body, the rotating shuttle assembly is fixedly connected with a lower rotating shaft, a first synchronous belt wheel is arranged on the upper rotating shaft in the upper box body, a second synchronous belt wheel is arranged on the lower rotating shaft, a third synchronous belt wheel and a fourth synchronous belt wheel are respectively arranged at the upper end and the lower end of the vertical shaft, the first synchronous belt wheel, the third synchronous belt wheel, the second synchronous belt wheel and the fourth synchronous belt wheel are respectively connected with the vertical shaft through an upper synchronous belt and a lower synchronous belt, the vertical shaft is directly or indirectly driven by a motor to rotate to drive the rotating shuttle assembly and the machine head assembly to synchronously rotate, more than two synchronous belt positioning pieces are circumferentially distributed on the periphery of the first synchronous belt wheel, the synchronous belt positioning pieces are fixed, the upper box body is connected to the fixing plate in a sliding mode, the fixing plate is fixedly arranged at the left end portion of the cantilever portion, a lifting air cylinder is arranged on the fixing plate, a piston rod of the lifting air cylinder is connected with the upper box body, when the lifting air cylinder drives the handpiece assembly to move upwards, the tensioning mechanism releases tensioning of an upper synchronous belt, the first synchronous belt wheel moves upwards along with the handpiece assembly, the upper synchronous belt is limited in a synchronous belt positioning piece and does not generate vertical displacement, after the lifting air cylinder drives the handpiece assembly to move downwards and reset, the first synchronous belt wheel moves downwards along with the handpiece assembly, and the tensioning mechanism tensions the upper synchronous belt.

In the above template sewing machine, the tensioning mechanism comprises a tensioning cylinder arranged outside the upper synchronous belt, the tensioning cylinder is arranged on a cylinder mounting plate, the cylinder mounting plate is fixedly connected with the inner wall of the corresponding part of the shell, the outer end of a piston rod of the tensioning cylinder is provided with a sliding guide block, the side surface of the sliding guide block adjacent to the upper synchronous belt is provided with an inclined surface, one end of the cylinder mounting plate corresponding to the outer end of the piston rod is provided with an adjusting mounting plate, the adjusting mounting plate is provided with a rotating shaft, the upper end and the lower end of the rotating shaft are respectively provided with an upper roller mounting plate and a lower roller mounting plate, a tensioning roller and a guide roller are arranged between the upper roller mounting plate and the lower roller mounting plate, the axes of the tensioning roller and the guide roller are vertical to the upper roller mounting plate and the lower, the piston rod of tensioning cylinder stretches out outwards, and guide roller rolls along the inclined plane and drives upper roller mounting panel, lower roller mounting panel roll towards one side of last hold-in range and take up the hold-in range tensioning, and the piston rod of tensioning cylinder contracts inwards, under reset spring's effect, drives the tensioning gyro wheel and leaves the hold-in range and remove the tensioning.

In the template sewing machine, the upper plane of the upper roller mounting plate is provided with the upper blocking sleeve, and the upper blocking sleeve and the tensioning roller are coaxially arranged.

In the template sewing machine, the inner wall of the cylinder mounting plate is provided with the first guide rail along the telescopic direction of the piston rod of the tensioning cylinder, and the sliding guide block is arranged on the first guide rail and moves back and forth along the first guide rail.

In the above template sewing machine, the sliding connection of the upper box body on the fixing plate is as follows: the side surface of the upper box body opposite to the fixed plate is fixedly provided with a sliding block, a second guide rail is arranged on the fixed plate along the up-down direction, and the upper box body is arranged on the second guide rail in a sliding manner through the sliding block and is connected with the fixed plate in a sliding manner.

In the template sewing machine, the vertical shaft is arranged in the column part, the upper end and the lower end of the vertical shaft respectively extend into the lower part of the cantilever part and the lower part of the base, the upper end of the vertical shaft is provided with the vertical shaft mounting seat, the vertical shaft mounting seat is fixedly arranged in the cantilever part through the vertical shaft mounting plate, and the third synchronous belt pulley is arranged in the vertical shaft mounting seat.

In the above template sewing machine, the vertical shaft is indirectly driven by a motor: a vertical shaft is provided with a synchronous belt wheel V, a rotating shaft of the motor is provided with a synchronous belt wheel V, and the synchronous belt wheel V is in transmission connection with the synchronous belt wheel V through a synchronous belt.

In foretell template sewing machine, the motor passes through the motor mount pad to be fixed on the last plane of base, and the main part of motor is located the column portion, and outside the basal plane of base was stretched out in the pivot of motor, the motor mount pad is including having mesoporous cylinder, the upper end of cylinder be provided with base fixed connection's flange portion, be provided with the opening on the lateral wall of cylinder, the pivot of motor passes through the bearing and rotates to be connected in the cylinder, six settings of synchronous pulley are downthehole in the well of cylinder, lower synchronous belt passes the opening setting.

In the template sewing machine, the lower end of the upper rotating shaft is sleeved with the connecting sleeve, the lower end of the connecting sleeve is provided with the flange, the connecting sleeve is fixedly connected with the machine head through the flange, the connecting sleeve is axially provided with a plurality of open strip-shaped grooves which are distributed along the circumferential direction, the connecting sleeve is sleeved with the fastening sleeve, and the fastening sleeve radially locks the connecting sleeve so as to fixedly connect the connecting sleeve with the upper rotating shaft.

In foretell template sewing machine, hold-in range setting element includes upper locating plate and the lower locating plate that sets up from top to bottom, and the last hold-in range sets up between upper locating plate and lower locating plate, just upper locating plate, lower locating plate keep away from the one end of synchronous pulley and pass through the connecting plate and connect, and the connecting plate is connected on the inner wall that last box corresponds.

Compared with the prior art, the utility model outstanding advantage is:

1. the utility model discloses a take-up mechanism controls the lift that the elasticity degree of going up the hold-in range cooperatees the aircraft nose assembly, need not the position of readjusting the hold-in range after the lift, only need take-up mechanism will go up the hold-in range again the tensioning can, easy operation is convenient.

2. The utility model discloses straining device realizes the tensioning or removes the tensioning action by automatically controlled control is automatic, and degree of automation is high, need not dismouting part during the switching, and is convenient fast.

Description of the drawings:

fig. 1 is a perspective view of the present invention;

fig. 2 is a first schematic view of the disassembled bedplate of the present invention;

FIG. 3 is a schematic view of the present invention with the bottom surface up after the bedplate has been disassembled;

FIG. 4 is a schematic view of the bedplate and the casing of the present invention after being disassembled;

FIG. 5 is an enlarged schematic view of section A of FIG. 4;

FIG. 6 is a schematic view of the base, the table plate, and the casing of the present invention after being disassembled;

fig. 7 is a schematic view of a synchronous belt positioning member of the present invention;

fig. 8 is a schematic view of the tensioning mechanism of the present invention;

fig. 9 is a schematic view of the connection sleeve of the present invention;

FIG. 10 is a schematic view of a fastening sleeve of the present invention;

fig. 11 is a schematic view of the motor mount of the present invention.

In the figure: 1. a base; 2. a machine head assembly; 3. a rotating shuttle assembly; 4. a post section; 5. a cantilever portion; 6. an upper rotating shaft; 7. an upper box body; 8. a lower rotating shaft; 9. a lower box body; 10. a synchronous belt wheel I; 11. a second synchronous belt wheel; 12. a vertical axis; 13. a third synchronous belt wheel; 14. a synchronous belt wheel IV; 15. an upper synchronous belt; 16. a lower synchronous belt; 17. a motor; 18. a vertical shaft mounting base; 19. a vertical shaft mounting plate; 20. a synchronous belt positioning piece; 21. a fixing plate; 22. a lifting cylinder; 23. a fifth synchronous belt wheel; 24. a synchronous belt wheel six; 25. a synchronous belt; 26. a motor mounting seat; 27. a cylinder; 28. a flange portion; 29. an opening part; 30. a tensioning cylinder; 31. a cylinder mounting plate; 32. a sliding guide block; 33. a bevel; 34. adjusting the mounting plate; 35. a rotating shaft; 36. an upper roller mounting plate; 37. a lower roller mounting plate; 38. tensioning the roller; 39. a guide roller; 40. a return spring; 41. an upper blocking sleeve; 42. a first guide rail; 43. a slider; 44. a second guide rail; 45. connecting sleeves; 46. a flange; 47. opening a strip-shaped groove; 48. fastening sleeves; 49. an upper positioning plate; 50. a lower positioning plate; 51. a connecting plate.

The specific implementation mode is as follows:

the invention will now be further described with reference to specific embodiments, with reference to figures 1 to 11:

the template sewing machine comprises a machine shell, a base 1, a machine head assembly 2 and a rotating shuttle component 3, wherein the rotating shuttle component 3 is positioned below the machine head assembly 2. The casing includes stand portion 4 and cantilever part 5, stand portion 4 and base 1 fixed connection, aircraft nose assembly 2 and last pivot 6 fixed connection, go up pivot 6 and rotate through the bearing and be connected in last box 7, and go up the lower extreme of pivot 6 and stretch out to go up box 7 outside and be connected with aircraft nose assembly 2. The rotating shuttle component 3 is fixedly connected with a lower rotating shaft 8, and the lower rotating shaft 8 is rotatably connected in a lower box body 9 through a bearing. A first synchronous belt wheel 10 is arranged on an upper rotating shaft 6 in an upper box body 7, a second synchronous belt wheel 11 is arranged on a lower rotating shaft 8, a third synchronous belt wheel 13 and a fourth synchronous belt wheel 14 are respectively arranged at the upper end and the lower end of a vertical shaft 12, the first synchronous belt wheel 10 and the third synchronous belt wheel 13, the second synchronous belt wheel 11 and the fourth synchronous belt wheel 14 are respectively connected with the vertical shaft 12 through an upper synchronous belt 15 and a lower synchronous belt 16, and the vertical shaft 12 is directly or indirectly driven by a motor 17 to rotate so as to drive a rotating shuttle component 3 and a handpiece assembly 2 to synchronously rotate. The vertical shaft 12 is arranged in the upright column part 4, the upper end and the lower end of the vertical shaft 12 respectively extend into the lower parts of the cantilever part 5 and the base 1, the upper end of the vertical shaft 12 is provided with a vertical shaft mounting seat 18, and the vertical shaft mounting seat 18 is fixedly connected with the cantilever part 5 through a vertical shaft mounting plate 19. More than two synchronous belt positioning pieces 20 are circumferentially distributed on the periphery of the first synchronous belt wheel 10, the synchronous belt positioning pieces 20 are fixed on the inner wall of the upper box body 7, tensioning mechanisms for tensioning the upper synchronous belt 15 are respectively arranged on one side or two sides of the upper synchronous belt 15, the upper box body 7 is slidably connected on a fixing plate 21, the fixing plate 21 is fixedly arranged at the left end part of the cantilever part 5, a lifting cylinder 22 is arranged on the fixing plate 21, a piston rod of the lifting cylinder 22 is connected with the upper box body 7, when the lifting cylinder 22 drives the handpiece assembly 2 to move upwards, the machine does not work, the tensioning mechanisms relieve the tensioning on the upper synchronous belt 15, the first synchronous belt wheel 10 moves upwards along with the handpiece assembly 2, the upper synchronous belt 15 is limited in the synchronous belt positioning pieces 20 and does not generate vertical displacement, after the lifting cylinder 22 drives the handpiece assembly 2 to move downwards and reset, the first synchronous, the tensioning mechanism tensions the upper timing belt 15, and the machine can work normally.

The upper rotating shaft 6 and the lower rotating shaft 8 described in this embodiment may be solid shafts or revolving virtual shafts.

The axial size of the primary synchronous pulley 10 is larger than the width of the upper synchronous belt 15, and the size difference between the two is to ensure that the primary synchronous pulley 15 has enough stroke in the lifting process.

When the vertical shaft 12 is directly driven to rotate by the motor 17, the motor 17 is a double-headed motor. The vertical shaft 12 is two broken shafts, and two ends of a rotating shaft of the motor 17 are connected with the broken shafts through couplers.

And the vertical shaft 12 is indirectly driven by the motor 17: a synchronous pulley five 23 is arranged on the vertical shaft 12, a synchronous pulley six 24 is arranged on a rotating shaft of the motor 17, and the synchronous pulley six 24 is in transmission connection with the synchronous pulley five 23 through a synchronous belt 25. In the embodiment, the rotating speed of the vertical shaft 12 needs to be reduced, and the diameter of the fifth synchronous pulley 23 is larger than that of the sixth synchronous pulley 24. The specific ratio of the diameter of the fifth synchronous pulley 23 to the diameter of the sixth synchronous pulley 24 is set according to actual conditions.

The motor 17 is fixed on the upper plane of the base 1 through the motor mounting seat 26, the main body of the motor 17 is positioned in the column part 4, and the rotating shaft of the motor 17 extends out of the base 1. The motor mounting seat 26 comprises a column 27 with a central hole, a flange part 28 for mounting is arranged at the upper end of the column 27, an opening part 29 is arranged on the side wall of the column 27, the rotating shaft of the motor 17 is rotatably connected in the column 27 through a bearing, the synchronous pulley six 24 is arranged in the central hole of the column 27, and the lower synchronous belt 16 passes through the opening part 29. A retainer ring for axially limiting the bearing and the synchronous pulley six 24 is also arranged on the rotating shaft of the motor 17.

Because the phenomenon that the hold-in range can appear lax after the transmission period, consequently, the utility model discloses be provided with respectively in one side or both sides of last hold-in range 15 and carry out the straining device that the tensioning was carried out to last hold-in range 15, the preferred both sides of this embodiment and symmetry set up straining device. In a similar way, the lower synchronous belt 16 of the present invention is also equipped with a tensioning mechanism. The tensioning mechanism is connected with the electric control, and the action of the tensioning mechanism is controlled by the electric control.

Specifically, the tensioning mechanism comprises a tensioning cylinder 30 arranged outside the upper synchronous belt 15, the tensioning cylinder 30 is arranged on a cylinder mounting plate 31, the cylinder mounting plate 31 is fixedly connected with the inner wall of the corresponding part of the housing, the outer end of a piston rod of the tensioning cylinder 30 is provided with a sliding guide block 32, the side surface of the sliding guide block 32 adjacent to the upper synchronous belt 15 is provided with an inclined surface 33, one end of the cylinder mounting plate 31 corresponding to the outer end of the piston rod is provided with an adjusting mounting plate 34, the adjusting mounting plate 34 is provided with a rotating shaft 35, the upper and lower ends of the rotating shaft 35 are respectively provided with an upper roller mounting plate 36 and a lower roller mounting plate 37, a tensioning roller 38 and a guide roller 39 are arranged between the upper roller mounting plate 36 and the lower roller mounting plate 37, the axes of the tensioning roller mounting plate 36 and the lower roller mounting plate 37 are vertical to the upper roller mounting plate 36 and the lower roller mounting, specifically, the upper roller mounting plate 36 and/or the lower roller mounting plate 37 are/is provided with screws, the cylinder mounting plate 31 is also provided with screws, and two ends of the return spring are respectively connected to the two screws. When the piston rod of the tensioning cylinder 30 extends outwards, the guide roller 39 rolls along the inclined plane 33 to drive the upper roller mounting plate 36 and the lower roller mounting plate 37 to roll towards one side of the upper synchronous belt 15 to tension the upper synchronous belt 15, the piston rod of the tensioning cylinder 30 retracts inwards, and the tensioning roller 38 is driven to leave the upper synchronous belt 15 to release tension under the action of the return spring 40.

In order to limit the up-and-down movement of the upper timing belt 15, an upper spacer 41 is provided on the upper plane of the upper roller mounting plate 36, and the upper spacer 41 is coaxially disposed with the tension roller 38. Preferably, the upper sleeve 41 is provided with the same diameter as the tensioning roller 38.

In order to ensure that the position relationship and movement between the components are not blocked, a first guide rail 42 is arranged on the inner wall of the cylinder mounting plate 31 along the extension and contraction direction of the piston rod of the tensioning cylinder 30, and the sliding guide block 32 is arranged on the first guide rail 42 and moves back and forth along the first guide rail 42.

The tensioning mechanism can also adopt the following structure: and fixing the tensioning motor at the corresponding part of the machine shell through a mounting seat. The rotating shaft of the tensioning motor is arranged upwards. A long strip-shaped plate is arranged on a rotating shaft of a tensioning motor, a tensioning roller 38 is arranged at the outer end of the long strip-shaped plate, the axis of the tensioning roller 38 is perpendicular to the long strip-shaped plate, and the tensioning motor drives the long strip-shaped plate to rotate towards the upper synchronous belt 15, so that the tensioning roller 38 acts on the upper synchronous belt 15 to perform tensioning. When the tension is released, the tension motor rotates reversely to drive the tension roller 38 to leave the upper synchronous belt 15.

Further, the sliding connection of the upper box 7 to the fixing plate 21 is as follows: the side of the upper box body 7 opposite to the fixed plate 21 is fixedly provided with a slide block 43, the fixed plate 21 is provided with a second guide rail 44 along the vertical direction, and the upper box body 2 is arranged on the second guide rail 44 through the slide block 43 in a sliding way and is connected with the fixed plate 21.

As shown in the figure, the lower end of the upper rotating shaft 6 is sleeved with a connecting sleeve 45, the lower end of the connecting sleeve 45 is provided with a flange 46, the connecting sleeve 45 is fixedly connected with the machine head through the flange 46, the connecting sleeve 45 is axially provided with a plurality of open strip-shaped grooves 47, the open strip-shaped grooves 47 are distributed along the circumferential direction, the connecting sleeve 45 is sleeved with a fastening sleeve 48, and the fastening sleeve 48 radially locks the connecting sleeve 45 so as to fixedly connect the connecting sleeve 45 with the upper rotating shaft 6. The fastening sleeve 48 is provided with a notch along the axial direction, a threaded hole is arranged at the position close to the cut-off position of the notch, and a screw is screwed in the threaded hole to tighten the notch so as to lock the fastening sleeve 48 and the connecting sleeve 45 along the radial direction.

As shown in the figure, the synchronous belt positioning part 20 comprises an upper positioning plate 49 and a lower positioning plate 50 which are arranged up and down, the upper synchronous belt 15 is arranged between the upper positioning plate 49 and the lower positioning plate 50, one ends, far away from the first synchronous pulley 10, of the upper positioning plate 49 and the lower positioning plate 50 are connected through a connecting plate 51, and the connecting plate 51 is connected to the inner wall corresponding to the upper box 7. The connecting plate 51 can be fixedly connected with the upper box 7 through screws, or a groove with the size matched with that of the connecting plate 51 is formed in the inner wall of the upper box 7, and the connecting plate 51 is clamped in the groove and is fixedly connected through glue.

Of course, the timing belt positioning member 20 may also be tightly composed of an upper positioning plate 49 and a lower positioning plate 50, and the upper positioning plate 49 and the lower positioning plate 50 are respectively fixed on the corresponding inner walls of the upper box 7.

In the present invention, the terms "upper", "lower", "left", "right", "middle", and "one", "two", "three" are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited to the technical scope of the present invention.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. Template sewing machine, including casing, base (1), aircraft nose assembly (2), rotating shuttle subassembly (3), the casing includes stand post portion (4) and cantilever part (5), its characterized in that: the machine head assembly (2) is fixedly connected with an upper rotating shaft (6), the upper rotating shaft (6) is rotatably connected in an upper box body (7), the rotating shuttle assembly (3) is fixedly connected with a lower rotating shaft (8), a synchronous pulley I (10) is arranged on the upper rotating shaft (6) in the upper box body (7), a synchronous pulley II (11) is arranged on the lower rotating shaft (8), a synchronous pulley III (13) and a synchronous pulley IV (14) are respectively arranged at the upper end and the lower end of a vertical shaft (12), the synchronous pulley I (10) and the synchronous pulley III (13), the synchronous pulley II (11) and the synchronous pulley IV (14) are respectively connected with the vertical shaft (12) through an upper synchronous belt (15) and a lower synchronous belt (16), the vertical shaft (12) is directly or indirectly driven by a motor (17) to rotate to drive the rotating shuttle assembly (3) and the machine head assembly (2) to synchronously rotate, more than two synchronous belt positioning pieces (20) are distributed on the periphery of the synchronous pulley I (10), the synchronous belt positioning piece (20) is fixed on the inner wall of the upper box body (7), a tensioning mechanism for tensioning the upper synchronous belt (15) is respectively arranged on one side or two sides of the upper synchronous belt (15), the upper box body (7) is connected on the fixing plate (21) in a sliding manner, the fixing plate (21) is fixedly arranged at the left end part of the cantilever part (5), a lifting cylinder (22) is arranged on the fixing plate (21), a piston rod of the lifting cylinder (22) is connected with the upper box body (7), when the lifting cylinder (22) drives the handpiece assembly (2) to move upwards, the tensioning mechanism releases the tensioning of the upper synchronous belt (15), the synchronous belt wheel I (10) moves upwards along with the handpiece assembly (2), the upper synchronous belt (15) is limited in the synchronous belt positioning piece (20) and does not move upwards or downwards, after the lifting cylinder (22) drives the handpiece assembly (2) to move downwards and reset, the first synchronous pulley (10) moves downwards along with the handpiece assembly (2), and the tensioning mechanism tensions the upper synchronous belt (15).

2. The template sewing machine according to claim 1, characterized in that: the tensioning mechanism comprises a tensioning cylinder (30) arranged on the outer side of an upper synchronous belt (15), the tensioning cylinder (30) is arranged on a cylinder mounting plate (31), the cylinder mounting plate (31) is fixedly connected with the inner wall of the corresponding part of the shell, a sliding guide block (32) is arranged at the outer end of a piston rod of the tensioning cylinder (30), an inclined plane (33) is arranged on the side surface of the sliding guide block (32) adjacent to the upper synchronous belt (15), an adjusting mounting plate (34) is arranged at one end, corresponding to the outer end of the piston rod, on the cylinder mounting plate (31), a rotating shaft (35) is arranged on the adjusting mounting plate (34), an upper roller mounting plate (36) and a lower roller mounting plate (37) are respectively arranged at the upper end and the lower end of the rotating shaft (35), and an axis perpendicular to the upper roller mounting plate (36) and the lower roller mounting plate, Tensioning roller (38) and guide roller (39) of lower roller mounting panel (37), it is connected through reset spring (40) with cylinder mounting panel (31) to go up roller mounting panel (36) or/and lower roller mounting panel (37), the piston rod of tensioning cylinder (30) is outwards stretched out, guide roller (39) roll along inclined plane (33) and drive last roller mounting panel (36), lower roller mounting panel (37) roll towards one side of last hold-in range (15) and take up last hold-in range (15), the piston rod of tensioning cylinder (30) is inwards retracted, under reset spring (40)'s effect, drive tensioning roller (38) and leave last hold-in range (15) and remove the tensioning.

3. The stencil sewing machine of claim 2, wherein: an upper blocking sleeve (41) is arranged on the upper plane of the upper roller mounting plate (36), and the upper blocking sleeve (41) and the tensioning roller (38) are coaxially arranged.

4. The stencil sewing machine of claim 3, wherein: a first guide rail (42) is arranged on the inner wall of the air cylinder mounting plate (31) along the extension direction of a piston rod of the tensioning air cylinder (30), and the sliding guide block (32) is arranged on the first guide rail (42) and moves back and forth along the first guide rail (42).

5. The template sewing machine according to claim 1, characterized in that: the upper box body (7) is connected on the fixing plate (21) in a sliding way: the side surface of the upper box body (7) opposite to the fixed plate (21) is fixedly provided with a sliding block (43), the fixed plate (21) is provided with a second guide rail (44) along the vertical direction, and the upper box body (7) is arranged on the second guide rail (44) in a sliding way through the sliding block (43) and is connected with the fixed plate (21) in a sliding way.

6. The template sewing machine according to claim 1, characterized in that: the vertical shaft (12) is arranged in the vertical column part (4), the upper end and the lower end of the vertical shaft (12) extend into the lower parts of the cantilever part (5) and the base (1) respectively, a vertical shaft mounting seat (18) is arranged at the upper end of the vertical shaft (12), the vertical shaft mounting seat (18) is fixedly arranged in the cantilever part (5) through a vertical shaft mounting plate (19), and the third synchronous belt wheel (13) is arranged in the vertical shaft mounting seat (18).

7. Template sewing machine according to claim 1 or 6, characterized in that: the vertical shaft (12) is indirectly driven by a motor (17) and comprises the following components: a vertical shaft (12) is provided with a synchronous pulley V (23), a rotating shaft of the motor (17) is provided with a synchronous pulley V (24), and the synchronous pulley V (24) is in transmission connection with the synchronous pulley V (23) through a synchronous belt (25).

8. The stencil sewing machine of claim 7, wherein: the motor (17) is fixed on the upper plane of the base (1) through the motor mounting seat (26), the main body of the motor (17) is positioned in the column part (4), the rotating shaft of the motor (17) extends out of the bottom plane of the base (1), the motor mounting seat (26) comprises a cylinder (27) with a middle hole, a flange part (28) fixedly connected with the base (1) is arranged at the upper end of the cylinder (27), an opening part (29) is arranged on the side wall of the cylinder (27), the rotating shaft of the motor (17) is rotatably connected in the cylinder (27) through a bearing, the synchronous belt wheel six (24) is arranged in the middle hole of the cylinder (27), and the lower synchronous belt (16) penetrates through the opening part (29) to be arranged.

9. The template sewing machine according to claim 1, characterized in that: go up the lower pot head of pivot (6) and be equipped with adapter sleeve (45), be provided with flange (46) at the lower extreme of adapter sleeve (45), adapter sleeve (45) are through flange (46) and aircraft nose fixed connection, be provided with a plurality of opening bar grooves (47) on adapter sleeve (45) axially, a plurality of opening bar grooves (47) distribute along circumference, be equipped with adapter sleeve (48) at adapter sleeve (45) overcoat, adapter sleeve (45) are along radial locking and then make adapter sleeve (45) and last pivot (6) fixed connection with adapter sleeve (45) in adapter sleeve (48).

10. The template sewing machine according to claim 1, characterized in that: hold-in range setting element (20) are including last locating plate (49) and lower locating plate (50) that set up from top to bottom, go up hold-in range (15) and set up between last locating plate (49) and lower locating plate (50), just go up locating plate (49), lower locating plate (50) keep away from the one end of synchronous pulley (10) and pass through connecting plate (51) and connect, and connecting plate (51) are connected on the inner wall that last box (7) correspond.