JPH0552787B2 - - Google Patents

Description

Detailed Description of the Invention "Industrial Application Field" The present invention relates to printing of the date of manufacture on the bottom of a paper cup of a portable instant coffee set that is sealed-packaged together with coffee powder, sugar, cream, and a spoon. Regarding equipment.

``Prior Art'' Conventionally, there has been a technique in which a printed object is manually arranged with an appropriate distance of approximately 2 to 5 mm from an ink ribbon, and type is pressed onto the printed object via the ink ribbon.

``Problems to be Solved by the Invention'' The above-mentioned conventional technology makes it possible to obtain an appropriate distance between the top surface of the object to be printed and the ink ribbon when the surface to be printed is lower than the top surface of the object to be printed, such as the top bottom surface of a paper tip. but,
Since the distance between the printing surface and the ink ribbon increases by the amount of the upper base, it is necessary to increase the amount of drop of the type. However, when the ink ribbon is pushed down and crimped from the top surface of the printing object to the printing surface by the type, the ribbon slides in conjunction with the descent of the printing type, and the sliding ribbon is crimped to the printing surface. Therefore, there was a problem that clear printing could not be performed and problems such as the ribbon breaking occurred.

"Means for Solving the Problems" However, the present invention applies printing by pressing printing type from above via an ink ribbon onto a printing object that is sequentially transported to a printing position by a transport element. In this device, the printing machine is equipped with a first elevating cylinder in which printing type is provided at the tip of the piston rod, and a ribbon reel for supplying and tensioning the ink ribbon between the printing object and the type, and the printing machine is raised and lowered to a predetermined position. A second lifting cylinder is provided to make the
The first lifting cylinder also carries the type, and the second
The ink ribbon and type are raised and lowered by an elevating cylinder to perform printing.

"Function" According to the present invention, for example, in a method in which an ink ribbon is interposed on the bottom surface of a paper tip to press type, the upper bottom of the paper tip is recessed from the circumferential bottom surface of the paper tip. Regardless of the shape, when the paper tip is conveyed to the printing position by the conveying element, the ink ribbon of the printing machine is moved to a certain distance that is an appropriate distance from the lower printing surface of the paper tip using the second lifting cylinder. After they are brought close to each other, the printing surface of the printing machine is applied to the ink ribbon by the first lifting cylinder to press it against the printing surface of the paper tip, thereby easily printing. without interfering with the ink ribbon during conveyance.
In addition, when printing by lowering the type, there is no problem such as the ink ribbon being broken by the type, and printing work can always be performed under appropriate conditions. Therefore, such standards Not only is it possible to easily automate the printing of various characters on a printing surface that is one step lower than a flat surface using extremely simple means, but it also improves the durability of ink ribbons, etc. This is something that can be used to develop skills. Particularly in this case, when the ink ribbon moves downward toward the printing surface using the second lift cylinder, the distance between the ink ribbon and the type is maintained constant, and the type is lowered by the first lift cylinder only during printing. Since printing is performed, the relative position between the ribbon and type is maintained well at all times, and even if the dimensions of the reference flat surface and the printing surface are changed, this adjustment can be easily made by simply changing the stroke of the second lifting cylinder. In addition, during printing, the type is always applied to the ribbon under certain conditions, ensuring reliable and clear printing without damaging the ribbon. The printing machine can be made small and compact by having a capacity as small as the recess.

``Example'' An example of the present invention will be described in detail below based on the drawings. Figure 1 is a cross-sectional view of the main parts, and Figure 2 is a front view of the whole. In the figure, 1 is a portable instant coffee cup that is sealed and packaged together with coffee powder, sugar, cream, and a spoon. The bottom of the tip 1 is formed as an upper base 1a. Also, 2 in the diagram
This is a printing machine that prints the manufacturing date on the outer surface of the upper base 1a, which is the printing surface of the paper tip 1, which is the printing object.

The printing machine 2 uses an ink ribbon 3 to press printed characters 4 such as various numbers of the date of manufacture onto the approximate center of the outer surface of the upper bottom 1a of the paper tip 1 using a first air cylinder 5, which is a pressing element. The first air cylinder 5 is vertically fixed approximately at the center of the front surface of the lift plate 6 via brackets 7, 7, and the type 4 is attached to the tip of the piston rod 8 which projects from the bottom of the cylinder 5 via a holder 9. It is detachably attached, and the supply reel 10 and take-up reel 11 of the ink ribbon 3 are pivotally supported on the lift plate 6 via a support shaft 12 and a rotation shaft 13,
The pulleys 14, 15, 16 around which the ink ribbon 3 is wound around the outside of the first air cylinder 5, the roller 17, and the tension adjustment roller 18 are connected to the support shafts 19, 20, 2.
1. A pair of left and right support pins are installed approximately in the center of an L-shaped guide plate 25 which is pivotally supported by the lift plate 6 via an adjustment shaft 24 having a roller shaft 22 and a handle 23, and which is further fixed to the lower side of the lift plate 6. 26, 26 and L-shaped guide pins 27, 27
are fixed at intervals such that the type 4 can be inserted therethrough,
A printing part 28 is formed in which the ink ribbon 3 is horizontally stretched under the facing lower part of the type 4, and the guide pins 27, 27 are formed to be shorter than the diameter of the upper base 1a of the paper tip 1, so that printing can be performed inside the upper base 2. The portion 28 is configured to be fittable.

It also includes a machine base 29 for installing and fixing the printing machine 2 on a workbench or the like, and a second air cylinder 30 that is an elevating element for raising and lowering the printing machine 2. The second air cylinder 30 is vertically fixed, and a guide rail 33 is vertically fixed to the back of a cover 32 surrounding the cylinder 30 and fixed to the lift plate 6, and fixed to the front of the machine base 29. A piston rod 3 that allows the guide rail 33 to slide vertically through the plurality of bearing bodies 34 and protrudes from the upper side of the second air cylinder 30.
5 is connected to an arm 36 extending from the machine stand 29, and the printing machine 2 is reciprocated between the conveyance position shown by the solid line in FIG. It is configured to be moved.

It also includes a rotating body 37 which is a conveying element that sequentially conveys the paper tips 1 below the printing section 28 of the printing machine 2 and automatically discharges them, and rotates the short cylindrical legs 38 into which the paper tips 1 are fitted. The paper tips 1 are fixed to the outer surface of the body 37 at approximately equal intervals, and the upper bottom 1 of the paper tips 1 are attached to the upper surface of the legs 38.
The rotating body 37 is configured to be intermittently rotatable so that the inner surface a is abutted and supported, and the outer surface of the upper base 1a is opposed to the printing part 28.

Furthermore, a photoelectric sensor 39 is provided to detect the paper tip 1 conveyed to the printing section 28, and based on the output value of the sensor 39, the rotating body 37 and each air cylinder 5, 30 are actuated, as shown in FIG. , the air cylinders 30 and 5 are activated in this order while the rotating body 37 is stopped, and the second air cylinder 30 is extended after a certain period of time after the rotating body 37 stops rotating. After a certain time delay from the time of expansion, the first air cylinder 5
while expanding the second air cylinder 30 with a certain time delay from the time of contraction of the cylinder 5, and rotating the rotary body 37 with a delay of a certain time from the time of contraction of the cylinder 30. 37 as well as the respective air cylinders 5 and 30.

This embodiment is constructed as described above, and after attaching the manufacturing date type 4 to the tip of the piston rod 8 of the first air cylinder 5 via the holder 9, and setting the ink ribbon 3 as shown in FIG. , the rotating body 37 is intermittently rotated counterclockwise to convey the paper tips 1 below the printing section 28 of the printing machine 2 one after another. is detected by the photoelectric sensor 39 and the rotating body 37 is stopped, and the second air cylinder 30 is extended after a certain period of time from the time of stopping, and the first air cylinder 5 is further extended after a certain period of time from the time of the cylinder 30 being extended. Stretch. As a result, the guide pin 27 of the printing section 28 moves into the upper base 1a of the paper tip 1, as shown by the imaginary line in FIG. 1, and the distance between the ink ribbon 3 and the outer surface of the upper base 1a becomes approximately 2 to 3 mm. As the entire printing machine 2 descends to the printing position, just before the printing machine 2 reaches the bottom dead center, the printing type 4 in the middle of its descent pushes down the ink ribbon 3 and presses it against the outer surface of the upper base 1a. The date is printed.

On the other hand, when the first air cylinder 5 is contracted after printing is completed, the second air cylinder 30 is contracted after a certain time delay from the time when the cylinder 5 is contracted, and the rotating body 37 is also contracted after a certain time delay from the time when the cylinder 30 is contracted. rotates. As a result, as shown by the solid line in FIG. Just before reaching the point, the next paper tip 1 is printed on the printing section 28.
The paper chips 1 are conveyed downward, and this is detected again by the sensor 39, and the printing operation is performed continuously, while the printed paper chips 1 are sequentially discharged.

In the above-mentioned embodiment, an example of a configuration using the ink ribbon 3 was shown, but a configuration that does not use the ink ribbon 3 may also be used, such as an ink transfer method in which ink is applied directly to the printed characters 4.

"Effects of the Invention" As is clear from the above embodiments, the present invention presses the printing type 4 via the ink ribbon 3 from above against the printing object 1 that is sequentially transported to the printing position by the transport element 37. The device is configured to perform printing using a first elevating cylinder 5 in which a printing type 4 is provided at the tip of a piston rod 8, and ribbon reels 10 and 11 for supplying and tensioning an ink ribbon 3 between a printing object 1 and the type 4. is installed in the printing machine 2, and
A second elevating cylinder 30 is provided for elevating the printing machine 2 to a predetermined position, and the first elevating cylinder 5 raises and lowers the type 4, and the second elevating cylinder 30 raises and lowers the ink ribbon 3 and the type 4 to print. For example, the upper base 1a of the paper tip 1
If printing is performed by interposing the ink ribbon 3 on the bottom surface and pressing the type 4, the ink ribbon 3 of the printing machine 2 may
It is possible to always perform printing work under appropriate conditions without interference with the printing type 4 and without problems such as the ink ribbon 3 being broken by the type 4 when printing by lowering the type 4. What you can do,
Therefore, even in printing work using such an ink ribbon 3 on a printing surface that is one step lower than a reference flat surface, it is possible to easily automate the printing work using an economical means with an extremely simple structure. In addition, this high performance can be achieved by improving the durability of the ink ribbon 3 and the like. Particularly in this case, when the second elevating cylinder 30 moves the ink ribbon 3 downward toward the printing surface, the distance between the ink ribbon 3 and the type 4 is maintained constant, and the first elevating cylinder 5 is used only during printing. Since printing is performed by lowering the type 4, the relative position between the ribbon 3 and the type 4 is always maintained well, and even when the dimensions of the reference flat surface and the printing surface are changed, the second elevating cylinder 30 This adjustment can be easily made by simply changing the stroke of , and when printing, the type 4 is always applied to the ribbon 3 under constant conditions, so that reliable and clear printing can be performed without damaging the ribbon 3. By making the stroke of the first lifting cylinder 5 as small as, for example, the recess of the bottom surface of the paper tip 1, the printing machine 2 can be made small and compact, which brings about remarkable effects.

[Brief explanation of drawings]

FIG. 1 is an explanatory cross-sectional view of the main parts, FIG. 2 is an explanatory front view of the whole, and FIG. 3 is a time chart. 1...Paper tip (material to be printed), 1a...Top bottom (surface to be printed), 2...Printing machine, 3...Ink ribbon, 4...Type, 28...Printing section, 30...Second
Air cylinder (elevating element), 37...Rotating body (transporting element).

Claims (1)

[Claims] 1 The ink ribbon 3 is applied from above to the printing object 1 that is sequentially transported to the printing position by the transport element 37.
In this device, printing is performed by pressing the printing type 4 through a first elevating cylinder 5 in which the printing type 4 is provided at the tip of the piston rod 8, and an ink ribbon 3 is placed between the printing object 1 and the type 4. The printing machine 2 is provided with ribbon reels 10 and 11 for supply and tension, and a second elevating cylinder 30 for elevating the printing machine 2 to a predetermined position. 2 Lifting cylinder 3
A printing device characterized in that it is configured to perform printing by raising and lowering an ink ribbon 3 and type 4 even when the number is 0.