JPH0115318B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape edge sewing device for a bed mattress. Conventionally, a regular sewing machine has been used as a sewing device to sew the tape edge of the pinerest for beds, and in order to prevent strain on the needle base, the outer skin is pulled to the edge against the internal pressure of the pinetress. The sewing machine had to be sewn by hand, requiring great skill in operating the machine, and also had the disadvantage of requiring a large amount of force. Therefore, there are problems such as variations in the finished state of the product, and it has been desired to improve this type of sewing device.

SUMMARY OF THE INVENTION In view of the above-mentioned needs, an object of the present invention is to provide a tape edge sewing device for a bed mattress, which allows even a female craftsman to easily perform the sewing process without requiring any human power when sewing the tape edge of a bed mattress. It is something. In other words, the sewing device of the present invention includes a pine tress pushing device that sequentially supplies the skin material of the pine tress to the needle base without strain, an automatic transfer section that automatically transfers the sewing device along the planar shape of the pine tress, and a pine tress pushing device that sequentially supplies the skin material of the pine tress to the needle base, an automatic transfer section that automatically transfers the sewing device along the planar shape of the pine tress, and a pine tress pushing device that sequentially supplies the skin material of the pine tress to the needle base, an automatic transfer section that automatically transfers the sewing device along the planar shape of the pine tress, and a pine tress pushing device that sequentially supplies the skin material of the pine tress to the needle base without force. The sewing device is equipped with a sewing part positioning device that controls the sewing position in conjunction with the sewing position according to the sewing position, and the sewing device attached to the support base moves while sewing the edge of the pine tress.

Hereinafter, one embodiment of the device of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a support stand for the sewing device, and running rails 4,
5 is laid down, and a rack 6 facing laterally is provided on the lower surface of the upper frame 2. Further, a mattress mounting table 9 is provided on the upper surface of the upper frame 2, which is set horizontally above the floor by means of supporting legs 7, via a table height adjustment mechanism 8. A guide rail 10 is fixedly installed. The table height adjustment mechanism 8 has a nut 11 fixed to the upper frame 2, and a bolt 13 rotatably pivoted to a bearing bracket 12 whose tip is fixed to the lower surface of the mounting table 9, which is screwed in the vertical direction. By rotating the bolt 13, the mounting table 9 can be adjusted up and down. Reference numeral 14 denotes a moving frame for holding the sewing machine, which is provided to be movable relative to the support stand 1;
A circumferential groove 17 of a guide roller 16 rotatably provided on a protruding shaft 15 protruding from the upper inner end of the upper frame 2 is engaged with the running rail 4 of the upper frame 2 so that the guide roller 16 can run freely, and the lower inner end An auxiliary roller 18 rotatably mounted on a shaft is brought into contact with the traveling rail 5 of the lower frame 3, and is supported on the side circumference of the support base 1 so as to be freely movable.
Further, a pinion 19 that engages with the rack 6 of the support base 1 is rotatably provided at the inner end of the moving frame 14, and the pinion 19 is rotated as appropriate via a rotation drive mechanism 20, so that the pinion 19 is rotated as appropriate to the support base 1. The vehicle then travels on the moving frame 14. 21 is a sewing device fixedly installed at the upper end of the moving frame 14, and is connected from the base 22 to the mounting table 9.
This constitutes a needle base 26 in which the head portion 23 and needle receiver portion 24 extend in the direction, and the sewing needle 25 reciprocates from the head portion 23 toward the end of the needle receiver portion 24. , which stitches the sewing thread passed through the needle hole of the sewing needle 25, and is driven by a motor 27. A mattress pushing device 28 is provided at the end of the head portion 23 of the sewing device 21. The mattress pushing device 28 extends the tip of a lever member 30 pivotably pivoted to a bracket 29 protruding from the base 22 to a position in front of the head 23, and an angle adjustment mechanism 31 configured at the tip. A push roller 33 having a roughly hemispherical head is rotatably mounted on a support bracket 32 via a support shaft 34, and the rear end of the lever member 30 is pivotally connected to the rear end of a cylinder 36 on the base 22. The pushing roller 33 is pivotally connected to the end of a rod 37 extending from the pushing device 35, and the pushing roller 33 is configured to swing in the vertical direction (arrow A) as the rod 37 expands and contracts. This pressing device 35 has a stop ring 38 attached to the midsection of a rod 37 inserted into a cylinder 36, a coil spring 39 and a sliding member 40 inserted externally to the rear part of the rod 37, and a stop ring 41 attached to the rear end. The sliding member 40 is prevented from being pulled out.
A handle 42 extending from the cylinder 36 protrudes from an elongated hole 43 formed in the side wall of the cylinder 36, and a locking hole 4 that connects the base of the handle 42 to the front and rear ends of the elongated hole 43.
4, 45. When the base of the handle 42 is engaged with the locking hole 44 at the front end, the sliding member 40 presses the upper stop ring 38 via the coil spring 39, and the lever member 3 via the rod 37.
A push roller 33 provided at the tip of the lever member 30 elastically pushes up the rear end of the lever member 30.
Press down elastically. Furthermore, when the base of the handle 42 is locked in the locking hole 45 at the rear end, the sliding member 40 comes into contact with the stop ring 41 that is ring-attached to the rear end of the rod 37, and the rod 37 is pushed in through the lever member 30 in order to move the rod 37 backward. The roller 33 can now be pulled up. Reference numeral 46 denotes a sewing region positioning device constructed at the inner end of the movable frame 14. The sewing part positioning device 46 moves in parallel in the vertical direction via an X-shaped link mechanism 47 at the upper end of the movable frame 14, and is constantly elastically biased upward by a coil spring 48 interposed in the link mechanism 47. The push roller 3 is pressed against the bracket 49.
A pressing roller 50 facing the roller 8 is installed on a shaft. The pressing roller 50 is rotatably mounted on a bearing bracket 51 fixed to the upper end of the positioning bracket 49 and pivoted on the inside of a shaft 52 that extends diagonally outward. The engagement roller 53 is loosely fitted to the guide rail 10 fixed to the mounting table 9 on the support table 1 so as to be freely movable, and is attached to the positioning bracket 4 of the link mechanism 47.
9 by controlling the upward push-up action. That is, when the height of the mounting table 9 from the support table 1 is changed via the height adjustment mechanism 8, the pressing roller 50 including the shaft 52 moves in the direction of arrow B via the engagement roller 53 engaged with the guide rail 10. will move to . Further, a clutch mechanism 55 is provided at the rear end of the shaft 52.
A bevel gear 56 that meshes with a bevel gear 54 is pivotally attached to the output shaft of the clutch mechanism 55, and the input shaft of the clutch mechanism 55 and the traveling drive motor 57 are drivingly connected via a rotational drive transmission device 58.

When sewing the tape edge b of the pine tress a with the pine tress tape edge sewing device configured as described above, the pine tress a is placed on the mounting table 9 so that the peripheral edge protrudes by approximately 50 widths of the pressure roller, and the sewing operation is performed. After the device is placed, the base of the handle 42 of the pressing device 35 is first engaged with the locking hole 44 at the front end. Due to this engagement, the rod 37 is pushed up by bringing the sliding member 40, coil spring 39, and stop ring 38 together, and the pushing roller 33 is applied to the upper end of the pine mattress a via the lever member 30 and the angle adjustment mechanism 31. It is pushed down diagonally outward by the elastic pressure of the spring 39. When the pushing roller 33 is pushed down diagonally outward and presses both upper ends of the pine mattress a, the contact surface of the pushing roller 33 becomes a truncated hemispherical shape, so that the skin material c of the corresponding part of the pine mattress a moves in the direction of arrow C. , and the tape edge b protrudes toward the edge. At this time, the pressure roller 50 crushes the lower end of the pine tress a, so the skin material c at that part of the pine tress a also protrudes in the direction of the tape edge b.
A sewable tape edge b edge is formed. Next, in the above state, the height adjusting mechanism 8 is adjusted so that the tape edge b which can be sewn is positioned at the needle base 26 of the sewing device 21, and the mounting table 9 is adjusted up and down. When the bolt 13 screwed into the nut 11 is rotated, the bolt 13 advances and retreats due to the screwing action, and the mounting table 9 moves up and down, so that the tape edge b of the mattress a placed on the mounting table 9 is accurately set at the needle base 26. be done. At this time, since the sewing part positioning device 46 is pivotally installed via a link mechanism 47, the pressing roller 50 operates in conjunction with the raising and lowering of the mounting table 9, and crushes the lower end of the pine cloth a with constant pressure. Become. The above operation completes the setting of the mattress a for sewing, and then the motor 27 is driven, and the tape edge b is sewn by the action of the sewing needle 25, which advances and retreats from the head section 23 toward the needle receiver section 24. , a pinion 19 pivotally installed on the moving frame 14 corresponds to the amount of movement of the cloth feeding device of the needle receiver 24 as the motor 27 is driven.
0, and by the rotation of the pinion 19 which meshes with the rack 6 of the support base 1, the movable frame 14 applies a guide roller 16 and an auxiliary roller 18 to the upper and lower rails 4 and 5 provided on the support base 1, respectively. It will engage and start running. At the same time, the pressing roller 50 is also rotated by the travel drive motor 57 to engage the clutch mechanism 55.
The pine tress a is rotated through the pine tress a, and is fed while crushing the lower surface circumference of the pine tress a, and due to the rotation of the push roller 33 accompanying this movement, the skin material c on the upper surface edge of the pine tress a in the moving part is successively protruded toward the edge. Then, the tape edges b are sequentially fed into the needle head 26. Further, during the sewing movement, the rotational angle (angle D) of the push roller 33 can be adjusted via the angle adjustment mechanism 31, and the amount of protrusion of the skin material c can be adjusted. When the sewing area reaches a corner of the mattress a, the clutch mechanism 55 that connects and connects the pressing roller 50 of the sewing area positioning device 46 and the traveling drive motor 57 is cut off.
While gradually rotating the mounting table 9 along the rails 4 and 5, the tape edge b of the region is sewn. After completing the sewing of the tape edge b around the entire circumference by the above operation, stop the motor of each driving part, and then remove the base of the handle 42 of the pressing device 35 from the locking hole 44 and move it backward, and the sliding member 40, stop ring 41, The lever member 30 is swung through the rod 37, and the push roller 33 is floated and released from the upper surface of the mattress a, thereby completing the entire sewing operation of the tape edge (b).

As explained above, the device of the present invention
is placed on the mounting table 9 of the device of the present invention, the push roller 33 and the pressure roller 50 are moved toward the sewing edge of the mattress a as the sewing device runs.
Since the skin material (c) is pulled out while crushing the upper and lower surfaces of the edge, it is possible to stably and automatically feed the sewing part to the needle head 26 one after another for sewing processing. . Therefore, the tape edge sewing device for pine tresses of the present invention eliminates the need for the worker to operate the sewing machine while crushing the edges against the strong elasticity of the pine tresses during sewing work, and does not require any force from the worker. It can be easily sewn even by female craftsmen. In addition, in the sewing device of the present invention, the work of crushing the pine tress is performed as the sewing device runs, and is automatically adjusted according to the thickness of the pine tress, so that the sewing work does not require skill. The present invention has the following characteristics and can improve the efficiency of the tape edge sewing work of pine tresses, and the effects of the present invention are extremely large.

[Brief explanation of drawings]

The drawings show an embodiment of the tape edge sewing device for a mattress according to the present invention. FIG. 1 is a partially cutaway schematic front view of the entire device of the present invention, FIG. 2 is a perspective view of the sewing part, and FIG. The same plan view, FIG. 4 is a front sectional view of the pressing mechanism of the same part, and FIG. 5 is an explanatory view showing the principle of the present invention. 1... Support stand, 4, 5... Rail, 6... Rack, 8... Height adjustment mechanism, 9... Placement table, 10...
... Guide rail, 14 ... Moving frame, 16 ... Guide roller, 18 ... Auxiliary roller, 19 ... Pinion, 20 ... Rotation drive mechanism, 21 ... Sewing device,
23...Head part, 24...Needle receiver part, 25...Sewing needle, 26...Needle base, 27, 57...Motor, 2
8... Pine tress pushing device, 30... Lever member, 3
1... Angle adjustment mechanism, 33... Push roller,
35...Press device, 36...Cylinder, 37...
Rod, 38, 41...Stop spring, 39,
48...Coil spring, 40...Sliding member,
42...Handle, 43...Long hole, 46...Sewing part positioning device, 47...Link mechanism, 49...Positioning bracket, 50...Press roller, 52...
...Shaft, 53...Engagement roller, 54, 56...
...Bevel gear, 55...Clutch mechanism, a...
Pine tress, b... Tape edge, c... Skin material.

Claims (1)

[Scope of Claims] 1. A pine-tress mounting table which is installed flat on the upper surface of the support table and whose mounting surface can be raised and lowered via a height adjustment device, and which can run in a substantially rectangular shape along the periphery of the support table. a moving frame pivotally supported by the moving frame, a sewing device fixed to the upper end of the moving frame, and a substantially semicircular truncated semicircular frame that is integral with the sewing device, is located on the mounting table, and is rotatably pivoted. The push roller is rotatably connected to the inner end of the push roller and the movable frame via a motor and a clutch mechanism, and the push roller is shaft-mounted at a position facing the push roller,
When sewing the tape edge of a pine tress placed horizontally on the above-mentioned mounting table, the lower edge of the pine tress is crushed by the pressing roller, and at the same time, the outer skin material of the crushed portion is crushed by the opposing pressing roller. A mattress tape edge sewing device characterized in that the tape edge is sewn by pulling out the tape edge in the direction of the tape edge and sequentially feeding the portions into the needle head of the sewing device. 2. One end of the shaft extending from the pressing roller is movably engaged with a guide rail provided along the periphery of the mounting table, and the shaft is pivoted to a parallel elevating frame body such as a link mechanism with respect to the moving frame. Claim 1, further comprising a device for positioning the sewing area of the mattress to be sewn, which is configured such that the pressing roller automatically moves up and down as the mounting table moves up and down. Matsutress tape edge sewing device. 3. The pushing roller is pivoted via a pushing angle adjustment mechanism in which the pivot shaft of the pushing roller can freely move up and down toward the edge of the mounting table, and the rotating direction of the pushing roller can be tilted and adjusted with respect to the traveling direction of the moving frame. 2. The tape edge sewing device for a mattress according to claim 1, wherein the amount of withdrawal of the tape edge portion is adjustable.