JP2021066121A - Recording device - Google Patents

Abstract

To inhibit printing accuracy from being deteriorated by an impact caused by falling.SOLUTION: A recording device 11 includes: a carriage 51 which is equipped with a recording head 52 for making records on a medium M and may reciprocate in a first direction; a carriage shaft 17 which guides the carriage 51 in the first direction; side frames 7 extending in a second direction intersecting with the first direction and supporting end parts of the carriage shaft 17; a center frame 6 extending in the first direction and connected to the side frames 7; and an impact absorption member 60 which absorbs an impact received from the carriage shaft 17. The impact absorption member 60 has: a holding portion 61 which is held by at least one of the center frame 6 and the side frames 7; and a load receiving portion 62 which receives an impact load from the carriage shaft 17. The load receiving portion 62 is provided with an impact absorption part for absorbing the impact.SELECTED DRAWING: Figure 7

Description

The present invention relates to a recording device.

Conventionally, a recording device for recording an image, characters, or the like by ejecting ink while moving a recording head with respect to a recording medium has been known. Such a recording device includes a frame that supports each component constituting the recording device. For example, Patent Document 1 discloses a recording device including a support frame that supports a shaft, side frames that are arranged so as to face each other in the axial direction, and a main frame on which the support frame is placed. In the recording device, each frame is fastened by a plurality of highly rigid screws in order to suppress deformation of the frame.

JP-A-2017-121979

However, when a drop impact is received during transportation of the device, even in the recording device of Patent Document 1, the impact received from the non-fixing member causes the screw fastening portion to be displaced and the frame to be deformed, resulting in a decrease in printing accuracy. There was a risk of When trying to further improve the rigidity of the frame so that it can withstand a drop impact, it is common to increase the number of screws to be fastened and to thicken the frame and each part. There is a problem that the size and weight of the recording device increase.

The recording device intersects the first direction with a carriage that has a recording head that records on the recording medium and can reciprocate in the first direction, and a carriage shaft that guides the carriage along the first direction. A side frame extending along the second direction and supporting the end of the carriage shaft, a center frame extending along the first direction and connected to the side frame, and receiving from the carriage shaft. The shock absorbing member includes a shock absorbing member that absorbs a shock, and the shock absorbing member has a holding portion held by at least one of the center frame and the side frame, and a load receiving portion that receives an impact load from the carriage shaft. The load receiving portion is provided with a shock absorbing portion for absorbing a shock.

In the recording device, the shock absorbing member is integrally formed, the holding portion extends in a third direction intersecting the first direction and the second direction, and the load receiving portion is the holding portion. It is preferable to extend from one end of the above in the second direction.

In the above recording device, it is preferable that the shock absorbing portion is realized by a notch portion formed in the load receiving portion.

In the above recording device, the load receiving portion is preferably provided above the carriage shaft.

In the above recording device, the shock absorbing member is preferably provided along the inner wall of the side frame.

In the recording device, the length of the holding portion along the first direction and the length of the holding portion along the third direction intersecting with the second direction is preferably longer than the length of the load receiving portion along the second direction.

The perspective view which shows the structure of the recording apparatus which concerns on embodiment. The plan view which shows the recording apparatus in the state which the reading unit is opened. The perspective view which shows the internal structure of a recording apparatus. A side sectional view showing an internal configuration of a recording device. The figure explaining the structure of the frame and the carriage shaft. Enlarged view of the main part of FIG. The cross-sectional view which shows the shape of the shock absorbing member. The figure which shows the simulation result of the strain generated in a shock absorbing part. The figure which shows the simulation result of the strain generated in a frame.

1. 1. Embodiment 1-1. Configuration of Recording Device FIG. 1 is a perspective view showing a configuration of a recording device according to an embodiment. FIG. 2 is a plan view showing a recording device in a state where the reading unit is open. FIG. 3 is a perspective view showing the internal configuration of the recording device. FIG. 4 is a cross-sectional view showing the internal configuration of the recording device. FIG. 5 is a diagram illustrating a configuration of a frame and a carriage shaft. In FIG. 3, for convenience of explanation, the housing 12 and the reading unit 30 are not shown. In the coordinates added to the drawings, assuming that the recording device 11 is placed on a horizontal plane, the three virtual axes orthogonal to each other are defined as the X-axis, the Y-axis, and the Z-axis. The X-axis is an axis parallel to the scanning direction of the recording head 52, which will be described later. One direction parallel to the X-axis is the first scanning direction X1, and the direction opposite to the first scanning direction X1 is the second scanning direction X2. The Y-axis is an axis parallel to the transport direction of the medium M during printing, and one direction parallel to the Y-axis is the transport direction Y1 of the medium during printing. The Z axis is an axis parallel to the vertical direction Z1. The X-axis corresponds to the first direction, the Y-axis corresponds to the second direction, and the Z-axis corresponds to the third direction. Further, the arrow direction of the transport direction Y1 is "front", the arrow direction of the first scanning direction X1 is "left", and the arrow direction of the vertical direction Z1 is "down".

The recording device 11 is a serial printing type inkjet printer. As shown in FIGS. 1 to 4, the recording device 11 includes a substantially rectangular parallelepiped housing 12 and a cover 13 that covers the opening 12A at the top of the housing 12. The cover 13 is provided so as to be openable and closable in a closed state covering the opening 12A of the housing 12 and an open state in which the opening 12A of the housing 12 is opened. The recording device 11 is a multifunction device having a printing unit 20 that occupies most of the housing 12 and a reading unit 30 that is composed of an upper end portion of the housing 12 and a cover 13.

A cassette 21 for accommodating a medium M as a recording medium such as paper is detachably inserted into a recess 14 provided in a lower portion of the front surface of the housing 12. A plurality of media M are housed in the cassette 21. An operated portion 21A that can be attached and detached by a user by hooking a finger is provided at the center portion of the front surface of each cassette 21. In the example shown in FIG. 1, the cassettes 21 are provided in two stages side by side in the vertical direction Z1. The number of cassettes 21 may be one or three or more.

A discharge port 15 from which the printed medium M is discharged opens at a position above the cassette 21 in the housing 12. A telescopic multi-stage discharge tray 22 is provided between the discharge port 15 and the cassette 21. The discharge tray 22 is used in a state of being extended downstream in the transport direction Y1, and the medium M discharged from the discharge port 15 is loaded on the discharge tray 22. Further, the housing 12 is provided with an operation panel 24 at a position above the discharge port 15. The operation panel 24 includes an operation unit 25 including a plurality of switches operated when a user gives an instruction to the recording device 11, and a display unit 26 for displaying a menu, various messages, and the like. The operation unit 25 includes a power switch 25A, a selection switch, and the like. The display unit 26 may be configured by a touch panel, in which case the operation function of the display unit 26 may also serve as a part of the operation unit 25.

The cover 13 is composed of a reading unit 30. The scanning unit 30 includes a platen cover 31. An automatic document feeder 32 provided with a document tray 33 on which a plurality of documents D can be placed is provided on the upper part of the document table cover 31. The scanning unit 30 has a sheet feeder type scanner function that feeds and reads the document D positioned in the width direction by the edge guide 33A one by one from the document tray 33, and the document table that is exposed when the document table cover 31 is opened. It is provided with a flatbed type scanner function for reading the document D placed on the surface. The document D read by the scanning unit 30 one by one by the sheet feeder type scanner function is loaded on the discharge tray 31A on the platen cover 31.

In addition to the printing function of printing on the medium M by the inkjet method, the recording device 11 which is such a multifunction device has a scanner function in which the reading unit 30 reads the document D and an image of the document D read by the reading unit 30 as a medium. It has a copy printing function for printing on M.

A liquid supply unit 27 is provided on the left side of the front surface of the housing 12. A plurality of liquid storage containers 28 for storing liquids such as ink are housed in the liquid supply unit 27. The plurality of liquid storage containers 28 store inks of different colors such as black, cyan, magenta, and yellow. The liquid contained in the liquid storage container 28 is used by the recording device 11 for jetting onto the medium M for printing. The liquid supply unit 27 has a plurality of windows 27A on the front surface capable of visually recognizing the amount of liquid for each liquid storage container 28. The liquid storage container 28 is, for example, an ink tank.

The liquid supply unit 27 has a lid portion 27B that can be opened and closed at the top. For example, when the amount of liquid decreases when the window portion 27A is viewed, the user opens the lid portion 27B and replenishes the liquid by injecting a liquid such as ink from an ink bottle, for example, into the supply port of the liquid storage container 28. The liquid storage container 28 is not limited to the injection type capable of injecting a liquid, and may be a replaceable ink cartridge or an ink pack.

As shown in FIG. 4, the recording device 11 includes a transport mechanism 40 that transports the medium M. The transport mechanism 40 is provided at the rear of the recording device 11, and includes a feed unit 41 that feeds the media M one by one from the cassette 21, a transport unit 42 that transports the medium M in the transport direction Y1, and a recorded medium. It has a discharge unit 43 that discharges M. The transport unit 42 transports the medium M fed by the feed unit 41 at a position upstream of the recording head 52 in the transport direction Y1. The discharge unit 43 discharges the printed medium M at a position downstream of the recording head 52 that injects the liquid onto the medium M in the transport direction Y1.

The feeding unit 41 includes a pickup roller 41A that sends out the highest one of the media M housed in each cassette 21, and an intermediate roller 44 that reverses the delivered medium M by transporting it along the outer circumference. Have. The feeding section 41 reverses the medium M fed backward from the cassette 21 by the rotation of the pickup roller 41A along the outer circumference of the intermediate roller 44, and then transports the medium M to the transport section 42.

A support base 16 that supports the target medium M is arranged at a position where the carriage unit 50 prints on the medium M. The transport unit 42 has a transport roller pair 45. The transport unit 42 transports the medium M sent out from the feed unit 41 to the discharge unit 43 via the support base 16. The discharge unit 43 has a first discharge roller pair 46 in the transport direction Y1 and a second discharge roller pair 47 arranged at a position downstream of the first discharge roller pair 46 in the transport direction Y1. The discharge unit 43 conveys the medium M recorded at the position of the support base 16 to the discharge port 15.

Inside the housing 12, a carriage unit 50 that can reciprocate along the X axis is provided. Specifically, the carriage unit 50 includes a carriage 51 that can reciprocate along the X-axis and a recording head 52 that is mounted on the carriage 51 and records on the medium M. Further, as shown in FIGS. 3 and 5, a frame 5 is configured in the housing 12. The frame 5 has a plane formed by the Y-axis and the Z-axis, a side frame 7 extending along the Y-axis intersecting the X-axis, and a plane formed by the X-axis and the Z-axis. It is composed of a center frame 6 extending along the X axis. One end of the side frame 7 is connected to one end of the center frame 6. The side frame 7 supports an end of a carriage shaft 17 that guides the carriage 51 in parallel with the X axis.

Two side frames 7 of the present embodiment are provided along the left and right inner walls of the housing 12. The two side frames 7 are connected to both ends of the center frame 6 by fastening members such as screws. The side frame 7 is provided with a long elliptical opening 8 in the vertical direction Z1. Both ends of the carriage shaft 17 are movably supported up and down along the opening 8. The carriage 51 is supported by the carriage shaft 17 and the upper end 6a of the center frame 6 and is configured to be movable along the X axis. The frame 5 may have a configuration in which the center frame 6 and the side frame 7 are integrally formed.

A pair of pulleys are provided on the front surface of the center frame 6 along the X axis. An endless belt 54 is hung on the pair of pulleys. On the back surface of the center frame 6, a carriage motor 53 for rotating the endless belt 54 via one pulley is provided. A part of the endless belt 54 engages with the carriage 51. The carriage 51 moves in the first scanning direction X1 or the second scanning direction X2 by rotating the endless belt 54 as the carriage motor 53 is driven. The carriage unit 50 is a so-called off-carriage type in which a liquid is supplied by a tube 71 from a liquid storage container 28 housed in the liquid supply unit 27. The recording head 52 records on the medium M by scanning in the first scanning direction X1 or the second scanning direction X2 together with the carriage 51.

FIG. 6 is an enlarged view of a main part of FIG. As shown in FIG. 6, the carriage shaft 17 is a non-fixed member that moves in the vertical direction along the opening 8. When the carriage shaft 17 is moved up and down by an elevating mechanism (not shown), the recording head 52 mounted on the carriage 51 is moved up and down, and the distance between the recording head 52 and the medium M is adjusted. Further, the position of the carriage shaft 17 in the transport direction Y1 is positioned with high accuracy by the inner diameter of the opening 8. Since the carriage 51 on which the recording head 52 is mounted moves guided by the carriage shaft 17, the side frame 7 provided with the opening 8 and the center frame 6 connecting the side frames 7 are important components that affect the printing accuracy. ..

The recording device 11 may receive a drop impact due to a careless drop such as during transportation. The carriage shaft 17 has a relatively large mass in order to maintain printing accuracy. The mass of the carriage shaft 17 of the present embodiment is approximately 1 kg. When the recording device 11 is dropped, the carriage shaft 17 rises relative to the recording device 11 due to its inertial force and collides with the upper end of the opening 8, so that the side frame 7 and the center frame 6 may be deformed. is there. Further, when the side frame 7 and the center frame 6 are thickened or the number of screws for fastening these frames 6 and 7 is increased so as to withstand the drop impact, the size of the recording device 11 may be increased. The weight will increase. Therefore, the recording device 11 includes a shock absorbing member 60 that absorbs the shock received from the carriage shaft 17.

1-2. Configuration of Shock Absorbing Part FIG. 7 is a cross-sectional view showing the shape of the shock absorbing member. As shown in FIG. 7, the shock absorbing member 60 has a holding portion 61 held by at least one of the center frame 6 and the side frame 7, and a load receiving portion 62 receiving an impact load from the carriage shaft 17. The holding portion 61 is a plate-shaped member that extends in the vertical direction Z1 along the center frame 6 and is long in the vertical direction Z1. The load receiving portion 62 is a plate-shaped member that extends in the transport direction Y1 from one lower end of the holding portion 61 and is long in the transport direction Y1, and is cantilevered by the holding portion 61. In other words, the holding portion 61 and the load receiving portion 62 are viewed from the side from the X axis by bending the lower end of a rectangular flat plate long in the vertical direction Z1 having a plane formed by the X axis and the Z axis in the transport direction Y1. It is a plate member having an L-shaped cross section.

The shock absorbing member 60 includes a side wall 66 having a plane formed by a Y-axis and a Z-axis along the inner wall of the side frame 7. The side wall 66 is a plate member having an L-shaped flat surface when viewed from the X-axis. That is, the side wall 66 extends from one end of the holding portion 61 and the load receiving portion 62 having an L-shaped cross section to the inner angle side of the L-shape along the side frame 7. The side wall 66 can also function as a holding portion for holding the shock absorbing member 60.

The length of the holding portion 61 along the Z axis is longer than the length of the load receiving portion 62 along the Y axis. The holding portion 61 has a first holding portion 61a fastened to the center frame 6 and a second holding portion 61b located below the first holding portion 61a. When the shock absorbing member 60 is attached to the center frame 6, the first holding portion 61a is located on the front surface side of the center frame 6. The second holding portion 61b is configured so that it can be positioned on the back surface side of the center frame 6 through an opening provided in the center frame 6. When the load receiving portion 62 receives an impact load from below, a force is generated in the first holding portion 61a in the direction Y2 opposite to the transport direction Y1 and in the second holding portion 61b in the transport direction Y1. Force is generated. By arranging the first holding portion 61a on the front side of the center frame 6 and the second holding portion 61b on the back side of the center frame 6, these forces can be dispersed and received on a wide surface, so that the center frame 6 can be received. Deformation is suppressed.

In the shock absorbing member 60, the holding portion 61 is fastened to the center frame 6 by screws 65 so that the load receiving portion 62 is provided above the carriage shaft 17. The shock absorbing member 60 is provided along the inner wall of the side frame 7. In the present embodiment, the mode in which the holding portion 61 of the shock absorbing member 60 is held by the center frame 6 is illustrated, but the present invention is not limited to this. The side wall 66 of the shock absorbing member 60 may be held by the side frame 7, or the holding portion 61 may be held by the center frame 6 and the side wall 66 may be held by the side frame 7.

The load receiving portion 62 is provided with a shock absorbing portion that absorbs the shock received from the carriage shaft 17 due to the dropping of the recording device 11. In other words, the shock absorbing member 60 is configured so that the rigidity of the load receiving portion 62 is lower than the rigidity of the holding portion 61 by providing the load receiving portion 62 with the shock absorbing portion. The shock absorbing portion of the present embodiment is realized by a notch portion 63 formed in the load receiving portion 62. The cutout portion 63 is provided at an end portion of the load receiving portion 62 near the holding portion 61.

The shock absorbing member 60 configured in this way is integrally molded by sheet metal processing of a metal material such as iron, aluminum, brass, or stainless steel. In the present embodiment, the shock absorbing portion is a notch portion 63, and the structure is shown in which the notch portion 63 reduces the rigidity of the load receiving portion 62. For example, drilling or a plate of the load receiving portion 62 is shown. It may be a shock absorbing portion that lowers the rigidity of the load receiving portion 62 than that of the holding portion 61 by making the thickness thinner than the plate thickness of the holding portion 61.

FIG. 8 is a diagram showing a simulation result of strain generated in the shock absorbing portion. FIG. 9 is a diagram showing a simulation result of strain generated in the frame. In FIGS. 8 and 9, the magnitude of the strain is indicated by the density of the gray scale, and the darker the color, the larger the strain. In other words, it can be said that the darker the color, the lower the rigidity. Further, FIG. 9 shows a state in which the shock absorbing member 60 is removed.

8 and 9 show the amount of strain generated when the maximum impact load of 500 N assumed by the drop impact is applied to the load receiving portion 62. As shown in FIG. 8, when an impact load is applied to the load receiving portion 62, the load receiving portion 62 having low rigidity and the side wall 66 are largely distorted, and the strain of the holding portion 61 is small. This means that by deforming the load receiving portion 62 having low rigidity, the impact is absorbed and the stress spreading to the holding portion 61 is suppressed. As shown in FIG. 9, the strain generated in the side frame 7 and the center frame 6 is significantly smaller than the strain of the shock absorbing member 60 shown in FIG. This means that by attaching the shock absorbing member 60 to the frame 5, deformation of the side frame 7 and the center frame 6 related to printing accuracy is suppressed.

As described above, according to the recording device 11 according to the present embodiment, the following effects can be obtained.

The recording device 11 includes a shock absorbing member 60 having a holding portion 61 held by the center frame 6 and a load receiving portion 62 that receives an impact load from the carriage shaft 17. The load receiving portion 62 has a shock absorbing portion that absorbs a shock. The rigidity of the load receiving portion 62 is lower than the rigidity of the holding portion 61 due to the shock absorbing portion. When the shock absorbing member 60 receives an impact load from the carriage shaft 17 due to the drop impact of the recording device 11, the energy of the impact is absorbed by the deformation of the load receiving portion 62. As a result, deformation of the holding portion 61 and the center frame 6 in which the holding portion 61 is held is suppressed. By providing such a shock absorbing member 60, it is possible to suppress an increase in the size and weight of the recording device 11 and to suppress a decrease in printing accuracy due to a drop impact.

The holding portion 61 extends in the vertical direction Z1 along the center frame 6, and the load receiving portion 62 extends in the transport direction Y1 from one lower end of the holding portion 61. With this configuration, the impact load from the carriage shaft 17 can be suitably received by the load receiving portion 62.

The load receiving portion 62 is provided with a notch portion 63 as a shock absorbing portion. As a result, the rigidity of the load receiving portion 62 can be easily lowered from the rigidity of the holding portion 61.

The load receiving portion 62 is provided above the carriage shaft 17. When the recording device 11 is dropped, the carriage shaft 17 rises relative to the device due to the inertial force, so that the impact load received from the carriage shaft 17 can be suitably received by the load receiving portion 62.

The shock absorbing member 60 is provided along the inner wall of the side frame 7. This makes it possible to suppress an increase in the size of the recording device 11.

The length of the holding portion 61 along the Z axis is longer than the length of the load receiving portion 62 along the Y axis. As a result, the impact extending to the center frame 6 can be dispersed through the holding portion 61.

The contents derived from the embodiment are described below.

The recording device intersects the first direction with a carriage that has a recording head that records on the recording medium and can reciprocate in the first direction, and a carriage shaft that guides the carriage along the first direction. A side frame extending along the second direction and supporting the end of the carriage shaft, a center frame extending along the first direction and connected to the side frame, and receiving from the carriage shaft. The shock absorbing member includes a shock absorbing member that absorbs a shock, and the shock absorbing member has a holding portion held by at least one of the center frame and the side frame, and a load receiving portion that receives an impact load from the carriage shaft. The load receiving portion is provided with a shock absorbing portion for absorbing a shock.

According to this configuration, the frame of the recording device is provided with a shock absorbing member that absorbs the shock received from the carriage shaft that is non-fixedly supported by the dropping of the device. The rigidity of the load receiving portion is lower than the rigidity of the holding portion due to the shock absorbing portion. When the shock absorbing member receives an impact load from the carriage shaft due to the drop impact of the recording device, the energy of the impact is absorbed by the deformation of the load receiving portion having low rigidity. As a result, it is possible to suppress the impact on the center frame and the side frame in which the holding portion of the impact absorbing member is held. By providing such a shock absorbing member, it is possible to provide a recording device that suppresses an increase in the size and weight of the recording device and suppresses a decrease in printing accuracy due to a drop impact.

In the recording device, the shock absorbing member is integrally formed, the holding portion extends in a third direction intersecting the first direction and the second direction, and the load receiving portion is the holding portion. It is preferable to extend from one end of the above in the second direction.

According to this configuration, the impact load from the carriage shaft can be suitably received by the load receiving portion.

In the above recording device, it is preferable that the shock absorbing portion is realized by a notch portion formed in the load receiving portion.

According to this configuration, the shock absorbing portion can be easily configured by providing the notch portion in the load receiving portion.

In the above recording device, the load receiving portion is preferably provided above the carriage shaft.

According to this configuration, when the recording device is dropped, the impact from the carriage shaft that rises relatively with respect to the device due to the inertial force can be suitably received by the load receiving portion.

In the above recording device, the shock absorbing member is preferably provided along the inner wall of the side frame.

According to this configuration, since the shock absorbing member is provided along the side frame, an increase in the size of the device is suppressed.

In the recording device, the length of the holding portion along the first direction and the length of the holding portion along the third direction intersecting with the second direction is preferably longer than the length of the load receiving portion along the second direction.

According to this configuration, the impact extending to the center frame and the side frame can be dispersed through the holding portion.

6 ... Center frame, 7 ... Side frame, 11 ... Recording device, 17 ... Carriage shaft, 51 ... Carriage, 52 ... Recording head, 60 ... Shock absorbing member, 61 ... Holding part, 62 ... Load receiving part, 63 ... Shock absorption Notch part as a part, M ... A medium as a recording medium.

Claims (6)

A carriage that is equipped with a recording head that records on the recording medium and can move back and forth in the first direction,
A carriage shaft that guides the carriage along the first direction,
A side frame extending along a second direction intersecting the first direction and supporting the end of the carriage shaft.
A center frame extending along the first direction and connected to the side frame,
A shock absorbing member that absorbs the shock received from the carriage shaft is provided.
The shock absorbing member has a holding portion held by at least one of the center frame and the side frame, and a load receiving portion receiving an impact load from the carriage shaft.
The load receiving portion is provided with a shock absorbing portion that absorbs shock.
A recording device characterized by. The shock absorbing member is integrally formed.
The holding portion extends in the first direction and the third direction intersecting the second direction.
The load receiving portion extends from one end of the holding portion in the second direction.
The recording device according to claim 1. The shock absorbing portion is realized by a notch formed in the load receiving portion.
The recording apparatus according to claim 1 or 2. The load receiving portion shall be provided above the carriage shaft.
The recording device according to any one of claims 1 to 3, wherein the recording device is characterized. The shock absorbing member shall be provided along the inner wall of the side frame.
The recording device according to any one of claims 1 to 4. The length of the holding portion along the first direction and the length of the holding portion along the third direction intersecting with the second direction is longer than the length of the load receiving portion along the second direction.
The recording device according to any one of claims 1 to 5.

Images