CN201214311Y - Ink supply tube rolling apparatus - Google Patents

Abstract

The utility model discloses a retracting device of an ink supply tube, which is mainly applied to a continuous ink supply system of an inkjet printer. The device comprises an ink supply tube, a shell, a drum and a wind spring, wherein, the shell is provided with a first continuous manger, a second continuous manger and a holding cavity. The rotating drum is arranged in the holding cavity. One end of the wind spring is connected with the drum and the other end of the wind spring is connected with the shell. The ink supply tube convolutes on the drum to form a first roll and a second roll which have the opposite convolution direction. The ink supply tube is connected with the front part of a printing head and the back part of an external ink storage container. The ink supply tube extends out of the shell from the first continuous manger and the second continuous manger. The utility model can solve the problem that the overlength, the sagging, the stack or the curl of the ink supply tube cause the abrasion of the ink supply tube, influence the movement of the printing head and even block the printing head. Consequently, the running stability and the printing quality of the printing head are improved. The retracting device of the ink supply tube is especially applicable to wide-format printers.

Description

Ink supply tube retractor

technical field

The utility model relates to a continuous ink supply system for an inkjet printer, in particular to an improvement of the support mode of an ink supply pipe in the continuous ink supply system.

Background technique

In the continuous ink supply system currently used for inkjet printers, the common support method for the ink supply tube is generally directly fixed on the printer casing through a gasket, or supported above the printer casing by a bracket. For example, the utility model patent specification whose publication number is CN2573231Y discloses a continuous ink supply device for an inkjet printer, which includes a print head that can slide back and forth along a slide rail in the printer, an ink supply tube, and a support for supporting the ink supply tube. The ink supply tube support frame and the ink storage bottle located outside the printer, etc., the base of the ink supply tube support frame is fixed on the printer shell, and the ink supply tube support frame has a support beam extending horizontally to the middle of the printing head sliding space, for supplying A section in the middle of the ink tube is fixed on the support beam through several tube clamps; one end of the ink supply tube is connected to the print head and sealed, and the other end is inserted into the bottom of the ink storage bottle. The above ink supply tube support method is feasible on narrow-format printers, but when used on wide-format printers, there will be problems such as poor carriage movement, easy jamming, and high-speed wear of ink supply tubes. , This is mainly due to the large movement distance of the carriage of the wide-format printer, and the excessively long ink supply tube set up to match its movement will sag and curl.

Utility model content

The purpose of the utility model is to provide an ink supply tube retracting device for an inkjet printer to solve technical problems such as poor movement of the carriage, easy jamming, and easy wear of the ink supply tube.

In order to solve the above technical problems, the utility model provides an ink supply tube retracting device, which includes an ink supply tube, a casing, a reel and a coil spring; the ink supply tube has a front part connected to a print head and a The rear part of an external ink storage container; the shell has a first through groove, a second through groove and an accommodating cavity; the reel is rotatably arranged in the accommodating cavity; one end of the coil spring is connected to the The reel, the other end of which is connected to the housing; the ink supply tube is wound on the reel to form a first roll and a second roll, and the winding direction of the first roll and the second roll is opposite; The front part and the rear part of the ink supply tube respectively protrude from the shell through the first through slot and the second through slot.

When the print head moves to the left, the ink supply tube retracting device is affected by the pulling force of the print head, so that the reel rotates and releases the ink supply tube forward, so as to supplement the length of the front part of the ink supply tube and avoid ink supply caused by this part. The length of the tube is not enough to restrain the movement of the print head, and at the same time, the coil spring stores elastic potential energy; when the print head moves to the right, the ink supply tube retracting device uses the elastic potential energy released by the coil spring to make the reel rotate and retract the ink supply tube , to shorten the length of the front part of the ink supply tube, while maintaining the tension of this part of the ink supply tube, to avoid the part of the ink supply tube due to excessive sagging, stacking or curling, which will cause the ink supply tube to wear, affect the movement of the print head, and even The stuck problem of the print head improves the stability of the print head and solves the problem of insufficient print quality caused by the unstable operation of the print head caused by the ink supply tube. This ink supply tube retracting device is especially suitable for application on wide-format printers.

As an improvement of the utility model, the housing is preferably fixedly arranged on a printer casing; the housing may have a support shaft for supporting the reel, and the reel is connected to the reel through a sleeve arranged along its axis. The support shaft forms a rotatable fit.

As an aspect of the present invention, the housing is substantially cylindrical, and the first through slot and the second through slot are formed on the circumferential side of the housing. Preferably, the housing is composed of a first case cover and a second case cover, and the first through groove and the second through groove are respectively formed on the circumferential sides of the first case cover and the second case cover.

As another aspect of the present invention, the coil spring can be located on one axial side of the reel, and preferably located in a coil spring accommodation groove on one side of the accommodation cavity, and the coil spring accommodation groove forms on the inner surface of the first case cover or the second case cover.

As another aspect of the present utility model, a pipe winding groove is formed on the circumferential side of the reel, and the pipe winding groove is formed by two circumferential flanges formed on both end faces of the reel and an annular pipe winding surface. Enclosed; the winding portion composed of the first roll and the second roll is located in the winding groove.

Description of drawings

Fig. 1 is a schematic diagram of the working principle of a preferred embodiment of the ink supply tube retracting device of the present invention;

Fig. 2 is a structural schematic diagram of the ink supply tube retracting device shown in Fig. 1 when the front part of the ink supply tube is extended;

Fig. 3 is an exploded view of parts of the ink supply tube retracting device in the state shown in Fig. 2;

Fig. 4 is an exploded view of parts from another angle of the ink supply tube retracting device in the state shown in Fig. 2;

Fig. 5 is a structural schematic diagram of the ink supply tube retracting device shown in Fig. 1 when the front part of the ink supply tube is shortened;

Fig. 6 is an exploded view of parts of the ink supply tube retracting device in the state shown in Fig. 5;

FIG. 7 is an exploded view of parts from another angle of the ink supply tube retracting device in the state shown in FIG. 5 .

The utility model will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Detailed ways

Referring to FIG. 1 to FIG. 7 , a preferred embodiment of the ink supply tube retracting device of the present invention, the ink supply tube retracting device mainly includes an ink supply tube 1 , a casing 2 , a reel 3 , a coil spring 4 and so on. The ink supply pipe 1 is connected between an external ink storage container (not shown) and the print head 5, and the print head 5 generally includes a built-in ink box and a carriage, etc., and the built-in ink box is fixed on the carriage by using a fixing clip. The carriage can reciprocally slide left and right within a certain range along the slide rails in the printer; the ink supply tube 1 is a row tube composed of multiple parallel single tubes, and its front end passes through the bundle tube plate on the top of the built-in ink cartridge. It is inserted into the ink filling port of the built-in ink cartridge and sealed, and the rear end of the entire ink supply tube 1 is inserted into the bottom of the external ink storage container.

Referring to FIG. 1 , the housing 2 is fixedly arranged on the bracket 71 on the side of the printer housing 7 . Referring to FIG. 2 to FIG. 4 , the housing 2 is roughly cylindrical, and it is composed of a first housing cover 21 and a second housing cover 22 connected by means of screws or buckles. A first through groove 211 is formed on the circumferential side of the first case cover 21, and a first support shaft 212 is arranged on the inner side along the axis; a second through groove 221 is formed on the circumferential side of the second case cover 22, and a second through groove 221 is formed on the inner side thereof A second support shaft 222 is provided along the axis. The first support shaft 212 and the second support shaft 222 are located on the same axis. An accommodating cavity 23 is formed between the first cover 21 and the second cover 22 .

Referring to FIG. 3 and FIG. 4 , the reel 3 is disposed in the accommodating cavity 23 , and the reel 3 has a sleeve 34 extending along its axis and a connecting rib 35 extending radially. Two ends of the sleeve 34 are respectively supported on the first support shaft 212 and the second support shaft 222 , and can rotate around the axes where the first support shaft 212 and the second support shaft 222 are located. The two end faces of the reel 3 are respectively formed with a first circumferential flange 32 and a second circumferential flange 33, which form a pipe winding groove with the annular pipe winding surface 31 formed on the circumferential side of the reel 3, which can The axial movement of the ink supply pipe 1 wound thereon is prevented.

Continuing to refer to FIG. 3 and FIG. 4 , the coil spring 4 is disposed on one axial side of the reel 3 , that is, between the reel 3 and the second cover 22 . The coil spring 4 is located in the coil spring accommodation groove 24 on one side of the accommodation chamber 23. The coil spring accommodation groove 24 is circular and formed on the inner surface of the second case cover 22. The inner end of the coil spring 4 is connected to One end of the sleeve 34 is close to the second case cover 22 , and the outer end is connected to the second case cover 22 . Of course, the coil spring 4 can also be located between the reel 3 and the first case cover 21, the coil spring accommodating groove 24 is formed on the inner surface of the first case cover 21, and the inner end of the coil spring 4 is connected to the sleeve 34 is close to one end of the first case cover 21 , and the outer end is connected to the first case cover 21 .

The ink supply tube 1 can be divided into a front part 11 connected to the print head 5, a rear part 12 connected to the external ink storage container, and a winding part wound in the winding pipe groove of the reel 3. The winding part consists of a The first roll 13 and a second roll 14 are formed, and the winding directions of the first roll 13 and the second roll 14 are opposite to each other. It should be noted that, the definition of the front part 11, the winding part and the rear part 12 is only for the convenience of a clearer description. In fact, between the front part 11 and the winding part, and between the winding part and the rear part 12 There is no clear boundary between them. The front part 11 of the ink supply tube 1 protrudes from the shell 2 through the first slot 211 and is connected to the print head 5 , and the rear part 12 protrudes from the shell 2 through the second slot 221 and is connected to the external ink storage container.

When the print head 5 moves from the right side to the left side, the ink supply tube 1 wound on the reel 3 is pulled by the print head 5 to drive the reel 3 to rotate, so that the length of the front part 11 of the ink supply tube 1 increases , the length of the rear part 12 is shortened, and the length of the winding part is basically unchanged. At the same time, the coil spring 4 stores elastic potential energy, thereby avoiding the movement of the print head 5 due to the insufficient length of the front part 11 of the ink supply tube; when the print head is formed by When the left side moves to the right side, the pulling force of the print head 5 acting on the ink supply tube 1 decreases, the coil spring 4 releases its elastic potential energy and drives the reel 3 to rotate, so as to shorten the front part of the ink supply tube connected to the print head 5 11, increase the length of the rear part 12 of the ink supply tube connected to the external ink storage container, while the length of the winding part remains basically unchanged, while maintaining the tension of the front part 11 of the ink supply tube to avoid the ink supply tube at this part due to Excessive sagging, stacking or curling will cause the ink supply tube to wear, affect the movement of the print head, or even block the print head, thereby improving the running stability of the print head and solving the problem of poor operation of the print head caused by the ink supply tube. The problem of lack of print quality caused by stability. This ink supply tube retracting device is especially suitable for application on wide-format printers.

What is described above is only the preferred embodiment of the present utility model, and it should be pointed out that, for those of ordinary skill in the art, on the premise of not departing from the inventive concept of the present utility model, the equivalent replacements or deformations made are all Fall within the protection scope of the present utility model.

Claims (9)

1, a kind of ink supply pipe retracting device comprises:

The ink supply pipe has front portion that is connected to a printhead and the rear portion that is connected to an external storage ink container;

It is characterized in that, also comprise:

Shell has first groove, second groove and container cavity;

Reel is arranged at described container cavity rotationally;

Wind spring, the one end is connected in described reel, and the other end is connected in described shell;

Described ink supply pipe is reeled on described reel and is formed the first volume and second volume, and the described first volume is opposite with the coiling direction of second volume; The front and rear of this ink supply pipe stretches out described shell by described first groove and second groove respectively.

2, ink supply pipe retracting device according to claim 1 is characterized in that:

Described shell is fixedly set in one and prints engine housing.

3, ink supply pipe retracting device according to claim 1 is characterized in that:

Have the back shaft that is used to support described reel in the described shell, this reel forms rotating the cooperation by the sleeve pipe along its axis setting with described back shaft.

4, ink supply pipe retracting device according to claim 1 is characterized in that:

Described shell is roughly cylindrical;

Described first groove and second groove are formed at the circumference side of this shell.

5, ink supply pipe retracting device according to claim 4 is characterized in that:

Described shell is connected to form by first cap and second cap;

Described first groove and second groove are formed at the circumference side of described first cap and second cap respectively.

6, ink supply pipe retracting device according to claim 1 is characterized in that:

Described wind spring is positioned at an axial side of described reel.

7, ink supply pipe retracting device according to claim 6 is characterized in that:

Described wind spring is positioned at the wind spring storage tank of described container cavity one side, and this wind spring storage tank is formed at the inner surface of described first cap or second cap.

8, ink supply pipe retracting device according to claim 1 is characterized in that:

The circumference side of described reel is formed with one around tube seat, and the coiling portion that is made of the described first volume and second volume is positioned at this around tube seat.

9, ink supply pipe retracting device according to claim 8 is characterized in that:

Described around tube seat being surrounded by two circumferential flanges that are formed on two end faces of described reel and a ring-type around the pipe face.

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