JP3409880B2 - Elevating table mechanism for multi-head sewing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table lifting mechanism for a multi-head sewing machine, and more particularly to a lifting table mechanism for a multi-head sewing machine that can reliably hold a table in a raised position.

[0002]

2. Description of the Related Art Conventionally, a multi-head sewing machine including a plurality of sewing machine arm portions has been put into practical use. This multi-head sewing machine
A plurality of single-head sewing machines are lined up at predetermined intervals on the upper surface of the base frame, and a similar embroidery pattern can be simultaneously formed on a planar work cloth of the number corresponding to the number of these single-head sewing machines.
A movable frame for mounting a plurality of flat frames for holding these work cloths is mounted on the operation table. The movable frame is configured to be driven in the X-axis direction via the X-axis drive mechanism and to be driven in the Y-axis direction via the Y-axis drive mechanism.

By the way, in this kind of multi-head sewing machine, a cap frame for embroidering a curved cap can be mounted on the cylinder bed instead of the flat frame used for forming an embroidery pattern on a flat work cloth. Is configured. In this case, in order to mount the hat frame on the cylinder bed, a predetermined distance is set from the position when the operation table is mounted on the flat frame (hereinafter, referred to as a raised position) through a pair of left and right lifting guide mechanisms provided on the base frame. An elevating table mechanism is provided so as to hold it at a position (hereinafter, referred to as a descending position) in which the table is lowered.

In a general lifting type table mechanism, the work table in the lowered position can be securely held because it can be placed on the upper surface of the base frame, but the work table in the raised position can be lifted up and down at the rear end. Since it cannot support the part, only the front end is supported by the base frame through the engaging means only at two left and right positions, regardless of the length, so that it cannot be reliably held. .

Therefore, when the work table is in the raised position and the work cloth moves on the work table during the embroidery work, the work table vibrates, causing a sewing failure or a flat frame. There was a problem that it was difficult to stretch the work cloth. Therefore, the present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a multi-headed structure capable of reliably holding the work table regardless of whether the work table is in a raised position or a lowered position. An object of the present invention is to provide a lifting type table mechanism of a sewing machine.

[0005]

Means for Solving the Problems] liftable table mechanism of the multi-head sewing machine 請 Motomeko 1, in multi-head sewing machine example Bei common elevating table for the plurality of the sewing machine, the upper surface of the bed portion of the plurality of the sewing machine the rear end of the table when the upper surface of the table is in the raised position the same level for
The rear end portion of a end support part table after you support put
A rear end support portion that extends along the guide, and a guide support mechanism that guides and supports the table so that the table can move up and down with respect to the base frame
A table support plate provided on the upper end of the guide support mechanism for supporting the table, a use position in which the table is mounted on the table support plate and a rear end portion of the guide support mechanism is mounted on a rear end support portion, and a rear end portion of the table support plate is rear end support. And a guide mechanism that guides slidably in the front-rear direction over the liftable position removed on the front side of the section.

According to another aspect of the present invention, there is provided a vertically movable table mechanism for a multi-head sewing machine, wherein a plurality of horizontal pin members are fitted on the rear end surface of the table and in a plurality of pin holes formed in a wall portion on the rear end side of the rear end support portion. Is projected.

[0007]

[Action] In liftable table mechanism of the multi-head sewing machine 請 Motomeko 1, since the guide support mechanism for vertically movably guided table relative to the base frame is provided, via the guiding and supporting mechanism, the table and the bed portion of the sewing machine
It has become switchable and raised position in which is positioned horizontally at the same height, to a horizontal lowered position by a predetermined distance downward from the raised position. In addition, there are a use position in which the rear end of the table is placed on the rear end support part with respect to the table support plate provided on the upper end of the guide support mechanism, and a liftable position in which the rear end part is removed to the front side of the rear end support part. Since a guide mechanism for slidably guiding the space between the tables is provided, the table is slidably movable between the ascending / descending position and the use position.
Furthermore, in the use position, the rear end of the table tape
The table is supported reliably because it is supported by the rear end support portion extending along the rear end of the bull .

As described above, the table can be supported by the table support plate and can be switched between the ascending position and the descending position through the guide supporting mechanism. When the table is in the ascending position, the table is lifted up and down through the guide supporting mechanism. The table in the raised position can be reliably supported because the table can be slid to the up / down movable position and the use position in which the rear end portion of the table is supported by the rear end support portion through the guide mechanism.

If a plurality of pin members projecting from the rear end surface of the table are fitted into the pin holes formed in the rear end support portion, the rear end of the table can be supported. It becomes even more certain.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is applied to a multi-head embroidery machine equipped with three embroidery sewing machines. This multi-head embroidery machine will be described. As shown in FIGS. 1 and 2, the multi-head embroidery machine M includes a flat surface having a predetermined length in the left-right direction on the rear side of the upper surface of the base frame 1 extending in the left-right direction. A sewing machine support plate 2 having a rectangular shape is disposed, and three embroidery sewing machines MH are arranged in a row in the left-right direction at predetermined intervals on the sewing machine support plate 2. Twelve needle bars (not shown) are provided on the head of the arm portion 3 of the embroidery sewing machine MH.
The needle bar case 4 in which is mounted is mounted, and the needle bar for forming the embroidery pattern with the embroidery thread of a desired color is selectively selectable.

On the other hand, the bed 6 at the lower end of the pillar 5 connected to the arm 3 is mounted on the sewing machine support plate 2, and the cylinder bed 7 extends forward from the front end of the bed 6 A thread wheel stimulator (not shown) is provided at the tip of the bed 7, and a stitch is formed on the work cloth with an embroidery thread of a desired color in cooperation with a sewing needle attached to a selected needle bar. It Here, an upper shaft (not shown) for moving the needle bar or the balance 8 up and down and a lower shaft (not shown) for rotating the thread promoting device.
Is driven by a drive shaft that is rotationally driven by a V-belt 9 that is connected to a sewing machine motor (not shown).

A work table 10 is disposed on the front side of the sewing machine support plate 2 so as to be substantially level with the upper surface of the cylinder bed 7, and includes the work table 10.
A movable frame 13, which is rectangular in plan view and extends in the left-right direction, is placed over the auxiliary tables 11 and 12 provided on both left and right sides of the work table 10. Then, the drive frame portion 13a at the right end of the movable frame 13 is moved and driven in the X axis direction (horizontal direction) by an X axis drive mechanism (not shown), and the drive frame portion 13b at the left end thereof is driven in the Y axis. A mechanism (not shown) is configured to move and drive in the Y-axis direction (front-back direction ). Therefore, the movable frame 13 can move on the XY plane. Also, the work table 1
The table support plate 14 is arranged in the center of the lower surface of 0,
This table support plate 14 is used for a lifting guide support mechanism 2 described later.
It is configured to be supported by 0 and move up and down .

Next, a pair of left and right elevating guide support mechanisms 20 that can switch the work table 10 between the raised position and the lowered position will be described with reference to FIGS. A table support plate 14 is disposed in the center of the lower surface of the work table 10. At the left and right ends of the table support plate 1, there are C-shaped channels 21 extending in the vertical direction, the upper ends of which are open inward. It is fixed in place.

The guide support mechanisms 20 on the right side will be described because the guide support mechanisms 20 have the same structure. A slider 23 of a slide guide 22 is screwed to the right end surface of the lower end of the C-shaped channel 21, and a slide rail 24 is slidably fitted onto the slider 23 via a ball 24a. Is
It is attached to a mounting member 25 fixed to the base frame 1 and having a substantially L-shape in plan view.

On the other hand, a pair of left and right gas cylinders 26 for urging the work table 10 upward and a pair of left and right coil springs 27 for urging the work table 10 downward are provided.
The upper end of each is pivotally attached to the left and right sides of the table support plate 14, and the lower end thereof is pivotally attached to the lower end of the base frame 1. The urging forces of the gas cylinder 26 and the coil spring 27 are adjusted so as to be balanced between the raised position and the lowered position, and the work table 10 is held between the raised position and the lowered position. Therefore, the hands of the operator and the work cloth are not caught between the work table 10 and the base frame 1, and the work table 10 is moved up and down from the stop position with a slight force.

Next, the work table 10 in the raised position is moved to the work table 10 by the lifting guide support mechanism 20.
A position supported by a table rear end support mechanism 40, which will be described later, from a position for raising and lowering (corresponding to an ascending / descending position of the present invention. This position is referred to as an ascending / descending position hereinafter) shown in FIG. The slide guide mechanism 30 for sliding the table support plate 14 in the front-rear direction until the table is used will be described.

The slide guide moving mechanism 30 is shown in FIGS.
As shown in FIGS. 9 and 10, guide plates 34 that support the left and right sides of the table support plate 14 are provided on the lower surface of the work table 10, and are formed at positions corresponding to the sewing machine arm portion 3 of the table support plate 14. The work table 10 is configured to slide in the front-rear direction by being guided by a pair of guide edges 32a extending linearly in the front-rear direction of the cut portion 32. Further, on the lower surface side of the work table 10,
A pin member 33 is provided so as to project, and an elongated hole 31 into which the pin member 33 is fitted is formed.

Then, the work table 10 is fitted on the table support plate 14 with the pin member 33 fitted in the long hole 31 formed in the table support plate 14, and the side edge of the guide plate 34 is set to the guide edge 32a of the table support plate. They are placed in contact with each other. Therefore, the operation table 10 includes the table support plate 1
The slide range in the front-rear direction is restricted by the long hole 31 provided in the work table 4, and the runout in the left-right direction is restricted by the long hole 31 and the guide edge 32a.
Is slid in the front-rear direction from the ascendable / descendable position to the use position.

By the way, the work table 10 and the table support plate 14 are integrated by a connecting screw 35 engaged from the lower surface of the table support plate 14 when the slide guide mechanism 30 is not used. Further, a pair of handles 36 is provided on the lower surface of the work table 10. Further, a slider 37 is provided at the rear end of the work table 10 at a predetermined interval to facilitate sliding movement of the work table 10.

Next, the rear end support mechanism 40 of the table will be described. As shown in FIGS. 5 to 10, at the rear portion of the upper surface of the base frame 1, a table rear end support member 41 extending over the entire length in the left-right direction is arranged. The table rear end support member 41 has a standing plate portion 41b standing upright on a rear edge of a horizontal table rear end support portion 41a on which a rear end portion of the work table 10 is placed, and a front plate 41a on the base frame 1. A mounting portion 41c to be mounted is continuously provided. The standing plate portion 41b is formed with a pin hole 44 into which a pin member 43 protruding from the rear end surface of the work table 10 at a predetermined interval is fitted.

Therefore, the work table 10 in the raised position
Is easily slid backward by the slider 37 from the ascending / descending position to the use position via the slide guide mechanism 40, and the rear end thereof becomes the table rear end supporting portion 41a of the table rear end supporting member 41. The pin member 43 placed and provided on the rear end surface of the work table 10 is fitted into the pin hole 44 of the standing plate portion 41b of the table rear end support member 41, and the rear end portion of the work table 10 is reliably supported.

By the way, when the work table 10 is in the use position, the rear end of the work table 10 is supported by the table rear end support mechanism 40, the front part is supported by the table support plate 14, and both side parts are the base. The frame 1 is configured to be supported by the support portions 45a that are continuously provided on the upper edges of the trapezoidal support members 45 that are provided on both sides of the upper surface of the frame 1. Further, the work table 10 is locked by the lock 47.
And the table support plate 14 are locked. (Fig. 10
See) Therefore, the work table 10 in the use position, the rear end portion supporting mechanism 40, a table support plate 14 is securely held me by the support member 45.

Now, a process in which the work table 10 is moved from the use position to the ascendable position through the slide guide mechanism 30 and reaches the lower position through the lift guide support mechanism 20 will be described. First, the rear end of the work table 10 in the use position shown in FIGS. 4 and 5 is removed from the rear end support mechanism 40 of the table, and the work table 10 is moved to the front in FIG. 8 via the slide guide mechanism 30. Move to the position where it can be raised and lowered.

Next, the work table 10 is pressed through the lifting guide support mechanism 20 and lowered to the lowered position shown in FIGS. 6 and 7. At this time, as shown in FIG. 10, the lowering of the work table 10 pulled out forward as shown by the chain line is not hindered by the support portions 45a of the support members 45 that support both side end portions of the work table 10 in the use position. As described above, the notches 46 through which the support portions 45a of the support member 45 are inserted are formed at both end portions of the work table 10. Then, when the work table 10 is lowered to the lowered position,
The work table 10 in the lowered position is locked by a lock mechanism 50 described later.

Next, the lock mechanism 50 of the work table 10 in the lowered position will be described. As shown in FIGS. 4 and 6, a latch tool 51 pivotably attached to both sides of the lower surface of the table support plate 14 is disposed, and a latch claw 51 a is formed at the tip of the latch tool 51. And its head 5
1b is formed in a substantially V shape in a side view. Further, the latch member 51 is coupled to a spring member attached at one end to the base frame 1 side, a latch claw 51a is always engaged direction (direction that swings clockwise latch member about the pivot) elastic Being energized.

On the other hand, stoppers 53 are provided on both front sides of the base frame 1 to engage with the latch members 51. The stopper 53 has a structure in which a stopper shaft 53b is mounted on a pair of inclined plates 53a that are inclined forward. When the work table 10 is lowered, first, one inclined portion of the substantially V-shaped head portion 51b of the latch tool 51 abuts on the stopper shaft 53b of the stopper 53, and the latch tool 51 moves to one side of the head portion 51b. The slanted portion of the latch member 5 is pressed by the stopper shaft 53b, and the latch tool 5 is temporarily pressed.
1 is swung in the direction opposite to the direction of engagement with anti-in spring member,
Furthermore, by working table 10 is lowered, the latch member 51, by the elasticity of the spring member is swung in the direction of engagement, the latch claw 51a of the latch member 51 a stopper 53
Is engaged with the stopper shaft 53b of the
The work table 10 is locked.

Therefore, by merely lowering the work table 10 via the guide support mechanism 20 by the lock mechanism 50 described above, the latch tool 51 is automatically engaged with the stopper 53, and the work table 10 is at the lowered position. Locked. Also , to release this lock, the latch tool 51
Operate to cancel.

The operation of the lifting table mechanism described above will be supplementarily described. The work table 10 is configured to be switchable between a lifted position having substantially the same height as the cylinder bed 7 and a lowered position lowered by a predetermined distance from the lifted position via the lifting guide support mechanism 20. , The work table 1 through the slide guide support mechanism 30
0 is slid in the front-back direction between the use position and the ascending / descending position. Further, in the use position, the work table 1
The rear end portion of 0 can be reliably supported by the rear end support mechanism 40 of the table.

Therefore, the work table 10 in the use position
The rear end is supported by the table rear end support mechanism 40, the front part is supported by the table support plate 14, and the side part is supported by the support member 45.
Than the conventional structure, reliable working table kana which Tsu <br/> you to hold the holding can be securely in the raised position.

[0029]

As described in the foregoing, according liftable table mechanism of the multi-head sewing machine according to claim 1, and a lowered position by a predetermined distance down the table raised position of the bed and the same height from the raised position A table guide support mechanism that enables position switching is provided in the table, a guide mechanism that slides the table between a use position and a liftable position in a rising position, and a table rear end support that supports a rear end of the table in the use position. Along the rear edge of the table
The table is moved to the use position through the guide support mechanism and the guide mechanism, and the rear end of the table in the use position is supported by the rear end support of the table. Since the table is securely held, the table does not vibrate due to the movement of the work cloth at the time of sewing, it is possible to prevent the occurrence of defective sewing, and it is possible to surely stretch the work cloth on the movable frame.

[0000] According to liftable table mechanism of the multi-head sewing machine 請 Motomeko 2, the pin member protruding from the table the rear end face is fitted to the pin hole in the wall portion of the rear end of the rear support part, the table It is possible to more reliably support the rear end portion.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a multi-head embroidery machine according to an embodiment of the present invention .

FIG. 2 is a plan view of a multi- head embroidery machine.

FIG. 3 is a cross-sectional plan view showing a lifting guide support mechanism of the multi-head embroidery machine .

[4] Operation industry table is a vertical sectional side view showing the position of use.

[5] Operation industry table is a plan view of a main part showing a position of use.

[6] Operation industry table is a vertical sectional side view showing a state in which the lowered position.

[7] Operation industry table is a plan view of a main part showing a state in which the lowered position.

[8] work sector table is a vertical sectional side view showing a state in which the liftable position.

9 is a cross-sectional view taken along the line AA of FIG.

10 is an enlarged plan view of a main part of FIG.

[Explanation of symbols]

6 embroidery sewing machine bed portion, 10 work table 14 table support plate, 20 lift guide support mechanism 22 sliding guide, 30 slide guide support mechanism 31 long hole, 34 guide plate 40 table rear end support mechanism, 41 table rear end support member 43 pin member, 44 pin hole M multi-head embroidery machine

Claims (2)

(57) [Claims] 1. A multi-head sewing machine example Bei common elevating table for the plurality of the sewing machine, when the upper surface of the table with respect to the upper surface of the bed portion of the plurality of the sewing machine is in the raised position as the same level table a end supporting portion table after you support put the rear end portion
A rear end support portion extending along a rear end portion, a guide support mechanism that guides and supports the table so that the table can be moved up and down with respect to a base frame, and a table support plate that is provided at an upper end of the guide support mechanism and supports the table. In the front-back direction, the table is supported with respect to the table support plate, and the rear end portion is placed on the rear end support portion in a use position, and the rear end portion is detached to the front side of the rear end support portion in an ascendable and descendable position. An elevating table mechanism for a multi-head sewing machine, which is provided with a guide mechanism that slidably guides to. 2. A plurality of horizontal pin members that respectively fit in a plurality of pin holes in the wall portion on the rear end side of the rear end support portion are provided on the rear end surface of the table so as to project therefrom. The lifting type table mechanism of the multi-head sewing machine according to 1.