JPH029939B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a marking machine for marking various marking materials, such as hollow tubes, by lowering a head containing a type wheel, and in particular to a marking machine that marks various marking materials, such as hollow tubes, by lowering a head containing a type wheel, and in particular, the present invention relates to a marking machine that marks various marking materials, such as hollow tubes, by lowering a head containing a type wheel, and in particular, the present invention relates to a marking machine that marks various marking materials, such as hollow tubes, by lowering a head containing a type wheel, and in particular, a marking machine that marks various marking materials, such as hollow tubes, by lowering a head containing a type wheel. The present invention relates to a head amplitude adjustment device for a marking machine that can adjust the pressure of the type wheel.

(Prior art) This type of marking machine applies a mark to the marking material by pressing the type wheel of the head against the marking material through a colored tape. If so, it is desirable to adjust the thickness according to the thickness and desired density of the printed characters.
Although prior art marking machines are equipped with means for adjusting the head pressure, they have the disadvantage that the head pressure adjusting means is complicated, expensive in equipment cost, and cumbersome to operate.

(Object of the Invention) An object of the present invention is to provide a head amplitude adjusting device for a marking machine that can adjust head pressure with a simple structure and operation.

(Structure of the Invention) A head amplitude adjusting device for a marking machine according to the present invention includes a head having a heated type ring and a cam engaging member that is attached to the head and engages with a rotating cam, and the head is adjusted by rotation of the cam. The object of the present invention is a marking machine which is equipped with a head driving means that descends while being guided in a vertical direction, and presses a type wheel against the marking material through a colored tape by lowering the head to apply a mark to the marking material. The head includes an adjusting member that is displaceably attached to the head and that adjusts the cam engaging member in a direction toward and away from the cam, and a pressing member that presses the cam engaging member toward the adjusting member. It is a feature.

With such a structure, by adjusting the adjusting member, the cam engaging member can be displaced relative to the cam to easily adjust the amplitude of the head, that is, the pressure of the type ring. Since a simple structure consisting of the press member and the pressing member is sufficient, the equipment cost is low.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 schematically shows a marking machine 10 to which the present invention is applied, and this marking machine 10 has a heated type wheel 12. a head 14 including a head 14, a guide means 16 for vertically guiding the head 14, and a head drive means 18 (a second head) for lowering the head 14.
When the head 14 is lowered, the type wheel 12 is brought into pressure contact with the marking material 22 via the colored tape 20, thereby marking the marking material 22. The marking material 22 is fed to the marking position 26 via the feeding means 24 and is led out via the through hole 28a of the guide plate 28. The feeding means 24 includes a pair of feeding rollers 30,
30', one feeding roller 30 is connected to a roller driving means (not shown) to feed the marking material 22 by a predetermined pitch at every marking operation interval. Also, marking position 2
6, the type 12a of the type wheel 12 is applied to the marking material 22 passing through the material holder 32 via the colored tape 20.
are pressed together to apply markings. As shown in FIG. 2, the head driving means 18 includes a cam engaging member 36 that engages with a cam 34 that is attached to the head 14 and rotates intermittently, and the head 14 is lowered by the intermittent rotation of the cam 34. do.

In the head amplitude adjusting device 10 of the present invention, the cam engaging member 36 is displaceably attached to the head 14. In the illustrated embodiment, this cam engaging member 3
6 consists of an L-shaped arm 40 which is swingably attached to the head 14 with a pin 38. The head amplitude adjusting device 10 also includes an adjusting member 42 that adjusts the cam engaging member 36 in a direction toward and away from the cam 34, and an adjusting member 42 that adjusts the cam engaging member 36 in a direction toward and away from the cam 34;
2 and press the cam engaging member 36 toward the head 1.
4, and a pressing member 44 substantially fixed to 4. In the illustrated embodiment, the adjustment member 42 is attached to the head 1.
4, the tip 46a of the adjusting rod 46 engages with the step 40a of the cam engaging member 36, that is, the L-shaped arm 40. Cam 34 is driven by a motor 48 through a clutch 50, as shown in FIG. In an automatic marking machine, this clutch 50 is engaged upon receiving a marking command. The pressing member 44 consists of a spring 52 arranged between the head 14 and the recess 40b of the L-shaped arm 40.

Next, the operation of the head amplitude adjusting device of the present invention will be described. From the state shown in FIG.
When screwed in, the L-shaped arm 40 is displaced against the spring 48 in the direction of arrow a, that is, clockwise in FIG. Therefore, when the clutch 50 is engaged and the cam 34 rotates, the head 14 is lowered via the L-shaped arm 40, and the type wheel 12 is also lowered to press the type 12a against the marking material 20, but the L-shaped arm 40 Since the horizontal part of is close to the cam 34, the cam 34
During the rotation of the head 14, the rotational angle engaged with the cam 34 increases, so the downward stroke of the head 14 increases. Since the head 14 is urged upward by a spring (not shown), when the cam 34 rotates and the engaging portion with the L-shaped arm 40 becomes the small diameter surface of the cam 34, the head 14 rises. The uppermost position of the head 14 is set by an adjustable stop 54. Conversely, when the adjusting rod 46 is retracted in the direction of arrow b, the spring 52 displaces the L-shaped arm 40 in the direction of arrow b, that is, in the counterclockwise direction in FIG. The downward stroke becomes smaller. In this way, the adjustment rod 46
The downward stroke (amplitude) of the head 14, ie the pressure on the type wheel 12, can be adjusted by adjusting.

(Effects of the Invention) According to the present invention, as described above, since the amplitude of the head can be adjusted with a simple structure of the cam engaging member and the adjusting member, the equipment cost is low and the adjusting member is not required. Since all you have to do is adjust it, it is easy to operate and has the practical benefit of improving work efficiency.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of the marking machine, and FIG. 2 is a side view systematically showing the cam driving means of the head pressure regulating device according to the present invention. 10...Marking machine, 12...Type wheel, 12
a... Print type, 14... Head, 16... Guide means, 18... Head driving means, 20... Colored tape, 22... Marking material, 34... Cam, 3
6...Cam engaging member, 38...pin, 40...L
Letter-shaped arm, 42...adjustment member, 44...pressing member, 46...adjustment rod.

Claims (1)

[Claims] 1. A head having a heated type ring and a cam engaging member attached to the head that engages with a rotating cam, the head being guided vertically and lowered by the rotation of the cam. In the marking machine, the cam engaging member is displaceably attached to the head, and the marking machine presses the type wheel against the marking material via a colored tape when the head is lowered to apply a marking to the marking material. , a marking comprising: an adjusting member that adjusts the cam engaging member in a direction toward and away from the cam; and a pressing member that presses the cam engaging member toward the adjusting member. Machine head amplitude adjustment device. 2. The head amplitude adjusting device for a marking machine according to claim 1, wherein the cam engaging member comprises an L-shaped arm swingably attached to the head. 3. The adjusting member comprises an adjusting rod screwed into the head, and the adjusting rod is in pressure contact with the cam engaging member against the pressing member. Head amplitude adjustment device for the marking machine described.