CN112895446B

CN112895446B - Double-shaft hole eccentric compensation device

Info

Publication number: CN112895446B
Application number: CN201911226192.7A
Authority: CN
Inventors: 陈鼎钧; 曾奕杰
Original assignee: Teco Image Systems Co Ltd
Current assignee: Teco Image Systems Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2023-09-05
Anticipated expiration: 2039-12-04
Also published as: CN112895446A

Abstract

The invention provides a double-shaft hole eccentric compensation device which is arranged on a guide shaft and comprises a supporting seat body, a first accommodating seat, a second accommodating seat, a first bearing and a second bearing. The support seat body is provided with a first port, a guide channel penetrates through the first side edge, a second port penetrates through the second side edge, the first containing seat is connected with the first port, the inner diameter is gradually increased along the direction of the first port towards the guide channel, the second containing seat is connected with the second port, and the inner diameter is gradually increased along the direction of the second port towards the guide channel. The first bearing is accommodated in the first accommodating seat, the second bearing is accommodated in the second accommodating seat, and when the guide shaft penetrates through the first bearing and the second bearing, the first bearing and the first accommodating seat form a first adjusting angle, and the second bearing and the second accommodating seat form a second adjusting angle so as to facilitate the guide shaft to guide the supporting seat to slide relative to the guide shaft.

Description

Double-shaft hole eccentric compensation device

Technical Field

The present disclosure relates to eccentric compensation devices, and particularly to a dual-shaft hole eccentric compensation device for a printer.

Background

In recent years, the technology of laminate manufacturing (Additive Manufacturing) has been greatly advanced, and the speed has been greatly increased, so that batch mass production has been enabled for laminate manufacturing. And the laminated manufacturing has fewer restrictions compared with the traditional manufacturing, so the performance of the product can be improved by the laminated manufacturing in the design of the product. However, the requirement of lamination manufacturing on product precision is higher than that of the traditional beating mode, so that the moving stability of the nozzle is more important.

In the traditional structure of the ink-jet printer or the lamination manufacturing, a spray head for printing is arranged on a bearing seat, the bearing seat is embedded into a double-shaft hole by a bearing, so that the bearing seat is precisely matched with a guide shaft, a power source is added, and the bearing seat can drive the spray head to move, thereby realizing the printing behavior. However, the bearing seat often generates eccentric or bending of the dual-shaft hole due to production tolerance, so that the guide shaft and the bearing in the dual-shaft hole cannot be matched. Or after the guide shaft is matched with the bearing of the double-shaft hole, the bearing is stressed too much on the guide shaft, and the printing precision is affected.

Therefore, how to develop a dual-shaft eccentric compensation device for a printer to solve the problems of the prior art is an urgent problem in the art.

Disclosure of Invention

The invention aims to provide a double-shaft hole eccentric compensation device applied to a printer. Through forming an internal guide angle in the accommodation seat of bearing, when the bearing accommodation is in the accommodation seat, the bearing can be guided and the angle is changed to make bearing and guiding axle cooperate each other, and the accommodation seat top keeps original precision, ensures that the printing precision is not influenced.

Another object of the present invention is to provide a dual-axis hole eccentricity compensation device applied to a printer. Because the inner guide angles are arranged in the accommodating seats of the double bearings, when the accommodating seats of the double bearings are arranged on the bearing seats and eccentric or bending phenomena are generated between the accommodating positions of the double bearing holes due to production process tolerances, the bearings accommodated in the accommodating seats can be guided by the guide shafts to change angles, so that the guide shafts can be connected with the double bearings in series. On the other hand, the angle design of the inner lead angle of the accommodating seat of the double bearing can be adjusted and designed according to the allowable process tolerance, so that the reject ratio of production is effectively reduced, the assembly flow is simplified, the cost is saved, and the operation efficiency is improved.

It is still another object of the present invention to provide a dual-axis hole eccentricity compensation device for use in a printer. The double-shaft hole eccentric compensation device has a special structure of an inner guide angle, and the bearing is guided to slightly change the angle directly through the inner guide angle. The bearing may be, for example, a plastic bearing or a Pelin, and is not limited to any form, and is not required to be specifically tapered. In addition, the invention does not need to use a gasket, when the bearing which is required to be arranged on the supporting seat body of the printer nozzle is deformed relatively to the bearing accommodating hole due to production tolerance, the compensation angle can be automatically carried out through the design of the inner lead angle, so that the guide shaft can pass through the two bearings and can be accurately matched due to the automatic compensation angle of the bearings, and the assembly cannot be realized.

In order to achieve the above-mentioned objective, the present invention provides a dual-shaft eccentric compensation device, which comprises a supporting seat body, a first accommodating seat, a second accommodating seat, a first bearing, a second bearing and a guiding shaft. The support base is provided with a first side edge, a second side edge and a guide channel. The first side and the second side are opposite to each other, the guide channel penetrates through the first side and forms a first port, and the guide channel penetrates through the second side and forms a second port. The first accommodating seat is embedded in the supporting seat body and connected with the first port, and the guide channel penetrates through the first accommodating seat. The first accommodation seat gradually increases the inner diameter of the first accommodation seat along the direction of the first port towards the guide channel. The second accommodating seat is embedded in the supporting seat body relative to the first accommodating seat in space and is connected with the second port, and the guide channel penetrates through the second accommodating seat. The second accommodation seat gradually increases the inner diameter of the second accommodation seat along the second port towards the direction of the guide channel. The first bearing is accommodated in the first accommodating seat and provided with a first end and a second end which are opposite to each other. Wherein the first end is connected to the first port. The second bearing is accommodated in the second accommodating seat and provided with a first end and a second end which are opposite to each other, wherein the first end is connected with the second port. The guide shaft penetrates through the first bearing, the guide channel and the second bearing. When the guide shaft penetrates through the first bearing, the second end of the first bearing and the first accommodating seat form a first adjusting angle, and when the guide shaft penetrates through the second bearing, the second end of the second bearing and the second accommodating seat form a second adjusting angle so as to facilitate the guide shaft to guide the supporting seat to slide relative to the guide shaft.

In an embodiment, the dual-shaft eccentric compensation device further includes at least one first limiting member and at least one second limiting member. At least one first limiting piece is adjacently arranged on the outer periphery of the first port and at least partially covers the first end of the first bearing, so that the first bearing is prevented from being separated from the first port. The second limiting piece is adjacently arranged on the outer periphery of the second port and at least partially covers the first end of the second bearing, so that the second bearing is prevented from being separated from the second port.

In one embodiment, the first bearing includes an extension; the first accommodating seat comprises a pair of alignment grooves which are adjacently arranged at the first port and correspond to the extending part of the first bearing in space. When the first bearing is accommodated in the first accommodating seat, the extension part of the first bearing is tightly matched with the alignment groove of the first accommodating seat. And the first limiting piece at least partially covers the extension part of the first bearing. Wherein the second bearing comprises an extension; the second accommodation seat comprises a pair of alignment grooves which are adjacently arranged at the second port and correspond to the extending part of the second bearing in space. When the second bearing is accommodated in the second accommodating seat, the extending part of the second bearing is tightly matched with the alignment groove of the second accommodating seat. And the second limiting member at least partially covers the extension portion of the second bearing.

In an embodiment, the first accommodating seat further includes a connection inclined plane connected between a portion of the first accommodating seat along the guiding channel and the alignment groove of the first accommodating seat. The second accommodation seat also comprises a connection inclined plane which is connected between the part of the second accommodation seat along the guide channel and the alignment groove of the second accommodation seat.

In an embodiment, the first receiving seat has a first internal guiding angle relative to the first port in the direction of the guiding channel, and the second receiving seat has a second internal guiding angle relative to the second port in the direction of the guiding channel.

In one embodiment, the first inner lead angle and the second inner lead angle range from 0.5 degrees to 15 degrees.

In an embodiment, the first adjustment angle is smaller than or equal to the first inner lead angle, and the second adjustment angle is smaller than or equal to the second inner lead angle.

In an embodiment, the first accommodating seat has a truncated cone-shaped accommodating space, and the center of the first port is aligned with the center of the upper bottom surface of the truncated cone-shaped accommodating space. The second accommodating seat is provided with a circular truncated cone-shaped accommodating space, and the center of the second port is aligned with the center of the upper bottom surface of the circular truncated cone.

In one embodiment, the support base is configured to carry a showerhead module.

In one embodiment, the diameter of the first end of the first bearing is equal to the diameter of the first port. The diameter of the first end of the second bearing is equal to the diameter of the second port.

In order to achieve the above objective, the present invention further provides a dual-shaft eccentric compensation device assembled and installed on a guiding shaft. The double-shaft hole eccentric compensation device comprises a supporting seat body, a first accommodating seat, a second accommodating seat, a first bearing and a second bearing. The support base is provided with a first side edge, a second side edge and a guide channel. The first side and the second side are opposite to each other, the guide channel penetrates through the first side and forms a first port, and the guide channel penetrates through the second side and forms a second port. The first accommodating seat is embedded in the supporting seat body and is connected with the first port. The guide channel penetrates through the first accommodating seat, wherein the inner diameter of the first accommodating seat is gradually increased along the first port towards the direction of the guide channel. The second containing seat is embedded in the supporting seat body in space relative to the first containing seat, is connected with the second port, and the guide channel penetrates through the second containing seat, wherein the second containing seat gradually increases the inner diameter of the second containing seat along the second port towards the direction of the guide channel. The first bearing is accommodated in the first accommodating seat and provided with a first end and a second end which are opposite to each other, wherein the first end is connected with the first port. The second bearing is accommodated in the second accommodating seat and provided with a first end and a second end which are opposite to each other, wherein the first end is connected with the second port, and the guide shaft penetrates through the first bearing, the guide channel and the second bearing. When the guide shaft penetrates through the first bearing, a first adjusting angle is formed between the second end of the first bearing and the first accommodating seat. When the guide shaft penetrates through the second bearing, a second adjusting angle is formed between the second end of the second bearing and the second accommodating seat, so that the guide shaft is beneficial to guiding the supporting seat to slide relative to the guide shaft.

The double-shaft hole eccentric compensation device has the beneficial effects that the double-shaft hole eccentric compensation device is applied to a printer. Through forming an internal guide angle in the accommodation seat of bearing, when the bearing accommodation is in the accommodation seat, the bearing can be guided and the angle is changed to make bearing and guiding axle cooperate each other, and the accommodation seat top of duplex bearing keeps original precision, ensures that the printing precision is not influenced.

Drawings

Fig. 1A discloses a perspective structural view of a dual-axis hole eccentricity compensation device according to a first embodiment of the present invention.

FIG. 1B discloses a cross-sectional structural view of the dual-axis hole eccentricity compensation device of FIG. 1A.

Fig. 1C discloses an enlarged view of the P1 region in fig. 1B.

Fig. 1D discloses an enlarged view of the P2 region in fig. 1B.

Fig. 2A discloses an exploded view of the structure of the dual axial hole eccentricity compensation device of the first embodiment of the present invention.

Fig. 2B discloses a cross-sectional structural view of the dual-axis hole eccentricity compensation device of fig. 2A.

Fig. 2C discloses an exploded view of the dual-axis hole eccentricity compensation device of the first embodiment of the present invention at another view angle.

Fig. 3 discloses a first exemplary illustration of the automatic angle adjustment of the dual-axis hole eccentricity compensation arrangement of the present invention.

Fig. 4 discloses a second exemplary illustration of the automatic angle adjustment of the dual-axis hole eccentricity compensation arrangement of the present invention.

The reference numerals are as follows:

1: double-shaft hole eccentric compensation device

10: support base

11: first side edge

12: second side edge

13: guide channel

14: first port

15: second port

20: first accommodation seat

21: alignment groove

22: connection inclined plane

30: second accommodation seat

31: alignment groove

32: connection inclined plane

40: first bearing

41: first end

42: second end

43: extension part

50: second bearing

51: first end

52: second end

53: extension part

60: guide shaft

70: first limiting piece

80: second limiting piece

90: auxiliary guide shaft

91: side gasket

92: screw

93: upper gasket

C1, C2: axle center

D1, D2: long diameter

E: bearing length

θ1: first internal lead angle

θ2: second internal lead angle

θ3: first angle of adjustment

θ4: second angle of adjustment

θ5: maximum angle difference

Δ1: eccentric tolerance

Δ2: tolerance of

L: distance of

Detailed Description

Some exemplary embodiments embodying features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of modification in various other forms without departing from the scope of the invention, and that the description and drawings are intended to be illustrative in nature and not as a limitation.

Fig. 1A discloses a perspective structural view of a dual-axis hole eccentricity compensation device according to a first embodiment of the present invention. FIG. 1B discloses a cross-sectional structural view of the dual-axis hole eccentricity compensation device of FIG. 1A. Fig. 1C discloses an enlarged view of the P1 region in fig. 1B. Fig. 1D discloses an enlarged view of the P2 region in fig. 1B. Fig. 2A discloses an exploded view of the structure of the dual axial hole eccentricity compensation device of the first embodiment of the present invention. Fig. 2B discloses a cross-sectional structural view of the dual-axis hole eccentricity compensation device of fig. 2A. Fig. 2C discloses an exploded view of the dual-axis hole eccentricity compensation device of the first embodiment of the present invention at another view angle. In the present embodiment, the dual-axis eccentricity compensation device 1 is applied to a printer, for example, and is configured in a moving mechanism of a printhead. The dual-shaft hole eccentricity compensation device 1 comprises a supporting seat body 10, a first accommodating seat 20, a second accommodating seat 30, a first bearing 40, a second bearing 50 and a guide shaft 60. The support base 10 is assembled with a spray head module (not shown), and the position of the spray head module can be controlled by the movement of the support base 10. In this embodiment, the supporting base 10 has a first side 11, a second side 12 and a guiding channel 13. Wherein the first side 11 and the second side 12 are opposite to each other, the guide channel 13 penetrates the first side 11 and forms a first port 14, and the guide channel 13 penetrates the second side 12 and forms a second port 15. In this embodiment, the first accommodating seat 20 is embedded in the supporting seat body 10, and is connected to the first port 14, and the guiding channel 13 penetrates through the first accommodating seat 20. The second accommodating seat 30 is spatially opposite to the first accommodating seat 20, is embedded in the supporting seat body 10, is connected to the second port 14, and the guiding channel 13 penetrates through the second accommodating seat 30. It should be noted that the first receiving seat 20 gradually increases the inner diameter of the first receiving seat 20 along the first port 14 toward the guiding channel 13. The second receiving seat 30 gradually increases the inner diameter of the second receiving seat 30 along the second port 15 toward the guide channel 13. The first accommodating seat 20 has a circular-table-shaped accommodating space, for example, and the center of the first port 14 is aligned with the center of the upper bottom surface of the circular-table-shaped accommodating space. In this embodiment, the second accommodating seat 30 has a circular-table-shaped accommodating space, and the center of the second port 15 is aligned with the center of the upper bottom surface of the circular table. In other words, the first receiving seat 20 has a first inner guiding angle θ1 towards the guiding channel 13 relative to the first port 14, and the second receiving seat 30 has a second inner guiding angle θ2 towards the guiding channel 13 relative to the second port 15. In the present embodiment, the first accommodating seat 20 and the second accommodating seat 30 are, for example, symmetrical to each other, and the first inner lead angle θ1 is equal to the second inner lead angle θ2, but the invention is not limited thereto. In the present embodiment, the angle θ2 between the first inner lead angle θ1 and the second inner lead angle ranges from 0.5 degrees to 15 degrees. It should be noted that, the range of the first inner lead angle θ1 and the second inner lead angle θ2 can be modulated according to the actual application requirement. In other embodiments, the first inner lead angle θ1 and the second inner lead angle θ2 are more, for example, related to the process tolerance of the dual-axis hole eccentricity compensation device 1, which will be further described later.

In addition, in the present embodiment, the first bearing 40 is accommodated in the first accommodating seat 20, and has a first end 41 and a second end 42 opposite to each other. Wherein the first end 41 is connected to the first port 14. The second bearing 50 is accommodated in the second accommodating seat 30 and has a first end 51 and a second end 52 opposite to each other, wherein the first end 51 is connected to the second port 15. The guide shaft 60 penetrates the first bearing 40, the guide passage 13, and the second bearing 50. In the present embodiment, the diameter of the first end 41 of the first bearing 40 is equal to the diameter of the first port 14, and the diameter of the first end 51 of the second bearing 50 is equal to the diameter of the second port 15. When the guide shaft 60 penetrates the first bearing 40, the second end 42 of the first bearing 40 and the first accommodating seat 20 form a first adjustment angle θ3 (see fig. 3). In addition, when the guide shaft 60 penetrates the second bearing 50, the second end 52 of the second bearing 50 and the second accommodating seat 30 form a second adjustment angle θ4 (see fig. 3), so as to facilitate the guide shaft 60 to guide the support seat 10 to slide relative to the guide shaft 60.

In this embodiment, the dual-axis eccentric compensating device 1 further includes at least one first limiting member 70 and at least one second limiting member 80, such as, but not limited to, a screw. The at least one first limiting member 70 is disposed adjacent to the outer periphery of the first port 14, and at least partially covers the first end 41 of the first bearing 40 to prevent the first bearing 40 from being separated from the first port 14. At least one second limiting member 80 is disposed adjacent to the outer periphery of the second port 15 and at least partially covers the first end 51 of the second bearing 50 to prevent the second bearing 50 from being separated from the second port 15.

On the other hand, in the present embodiment, the first bearing 40 includes an extension portion 43, the first accommodating seat 20 includes a pair of positioning slots 21, and is adjacent to the first port 14, corresponding to the extension portion 43 of the first bearing 40 in space, when the first bearing 40 is accommodated in the first accommodating seat 20, the extension portion 43 of the first bearing 40 and the positioning slots 21 of the first accommodating seat 20 are tightly matched with each other, and the first limiting member 70 at least partially covers the extension portion 43 of the first bearing 40. In this embodiment, the second receiving seat 50 includes an extension portion 53, the second receiving seat 30 includes a pair of positioning grooves 31, the second receiving seat 30 is adjacent to the second port 15, the second receiving seat 30 corresponds to the extension portion 53 of the second receiving seat 50 in space, when the second receiving seat 50 is received in the second receiving seat 30, the extension portion 53 of the second receiving seat 50 and the positioning groove 31 of the second receiving seat 30 are tightly matched with each other, and the second limiting member 80 at least partially covers the extension portion 53 of the second receiving seat 50. In this embodiment, the first accommodating seat 20 further includes a connecting inclined plane 22 connected between a portion of the first accommodating seat 20 along the guiding channel 13 and the alignment groove 21 of the first accommodating seat 20. In addition, the second accommodating seat 30 further includes a connecting inclined plane 32 connected between a portion of the second accommodating seat 30 along the guiding channel 13 and the alignment groove 31 of the second accommodating seat 30. In other embodiments, the extending portion 43 of the first bearing 40, the alignment groove 21 and the connecting inclined plane 22 of the first accommodating seat 20, the extending portion 53 of the second bearing 50, and the alignment groove 31 and the connecting inclined plane 32 of the second accommodating seat 30 can be omitted, and the invention is not limited thereto and will not be repeated.

In this embodiment, the dual-axis eccentric compensating device 1 further includes an auxiliary guiding shaft 90 spatially opposite to the guiding shaft 60, for example, parallel to the guiding shaft 60. The auxiliary guide shaft 90 may be slidably connected to the front end of the support base 10, for example, by a side washer 91 and a screw 92, so that the auxiliary support base 10 slides smoothly with respect to the guide shaft 60 when the support base 10 slides with respect to the guide shaft 60. In addition, in the present embodiment, the dual-axis eccentric compensating device 1 further includes an upper spacer 93 disposed between the supporting base 10 and the auxiliary guiding shaft 90, so as to facilitate the supporting base 10 to be slidably connected to the auxiliary guiding shaft 90. However, the essential features of the present invention are not limited and will not be described herein.

Fig. 3 discloses a first exemplary illustration of the automatic angle adjustment of the dual-axis hole eccentricity compensation arrangement of the present invention. Reference is made to fig. 1A to 1D, fig. 2A to 2C, and fig. 3. In the present embodiment, the first inner lead angle θ1 and the second inner lead angle θ2 can be designed according to the maximum allowable eccentric tolerance Δ1 in the manufacturing process, for example. For example, if the distance between the first side 11 and the second side 12 of the supporting seat 10 is L, the first inner guiding angle θ1 of the first accommodating seat 20 and the second inner guiding angle θ2 of the second accommodating seat 30 are

If the first accommodation seat 20 and the second accommodation seatAfter the production process of the seat 30, the axis C1 of the first accommodating seat 20 and the axis C2 of the second accommodating seat 30 have no angle difference, and only have a maximum eccentric tolerance Δ1. When the first bearing 40 and the second bearing 50 guide the shaft 60 to penetrate the first bearing 40, the second end 42 of the first bearing 40 and the first accommodating seat 20 form a first adjustment angle θ3. In addition, when the guide shaft 60 penetrates the second bearing 50, the second end 52 of the second bearing 50 and the second accommodating seat 30 form a second adjustment angle θ4. In the present embodiment, taking the second bearing 50 as an example, the original diameter D1 of the second bearing 50 is adjusted to the diameter d2=d1/cos θ4 of the second port 15 of the second receiving seat 30 after the second bearing 50 is shifted by the second adjustment angle θ4. In this embodiment, L > D1 > Δ1, cos θ4-1. Therefore, the dual-axis eccentric compensating device 1 of the present invention needs to compensate the gap difference between the second ports 15 of the second receiving seat 30, that is, the difference D2-d1=d2 (1-cos θ4)/cos θ4 between the required adjustment diameter length D2 of the second ports 15 of the second receiving seat 30 and the original diameter length D1 of the second bearing 50,much smaller than the eccentric tolerance Δ1 required to ream the first and second receptacles 20 and 30. Therefore, in the dual-shaft eccentric compensating device 1 of the present invention, when the first bearing 40 and the second bearing 50 are respectively accommodated in the first accommodating seat 20 and the second accommodating seat 30 by utilizing the inner guide angle (inter-chamfer) formed by the first accommodating seat 20 and the second accommodating seat 30, the first bearing 40 and the second bearing 50 can be guided by the guiding shaft 60 to change the angle, so that the first bearing 40, the second bearing 50 and the guiding shaft 60 are matched with each other, and the second port 15 opposite to the first port 14 and the second port 40 opposite to the first accommodating seat 20 maintains the original precision, so as to ensure that the printing precision is not affected.

Fig. 4 discloses a second exemplary illustration of the automatic angle adjustment of the dual-axis hole eccentricity compensation arrangement of the present invention. Referring to fig. 1A to 1D, 2A to 2C, and 4. In the present embodiment, the first inner lead angle θ1 and the second inner lead angle θ2 can be designed according to the maximum allowable eccentric tolerance Δ1 in the manufacturing process, for example. For example, if the distance between the first side 11 and the second side 12 of the supporting seat 10 is L, the first inner guiding angle θ1 of the first accommodating seat 20 and the second inner guiding angle θ2 of the second accommodating seat 30 are

If the first accommodation seat 20 and the second accommodation seat 30 have no eccentric tolerance after the production process, the axis C1 of the first accommodation seat 20 and the axis C2 of the second accommodation seat 30 have only a maximum angle difference, so that the axis C1 of the first accommodation seat 20 and the axis C2 of the second accommodation seat 30 are bent relatively. When the first bearing 40 and the second bearing 50 guide the shaft 60 to penetrate the first bearing 40, the second end 42 of the first bearing 40 and the first accommodating seat 20 form a first adjustment angle θ3. In addition, when the guide shaft 60 penetrates the second bearing 50, the second end 52 of the second bearing 50 and the second accommodating seat 30 form a second adjustment angle θ4. In the present embodiment, taking the second bearing 50 as an example, the original diameter D1 of the second bearing 50 is adjusted to the diameter d2=d1/cos θ4 of the second port 15 of the second receiving seat 30 after the second bearing 50 is shifted by the second adjustment angle θ4. In this embodiment, L > D1 > Δ1, cos θ4-1. In general practice, the bearing length E is greater than D1, theta 4 is less than 2 degrees, cos theta 4-1, 1-cos theta 4 is less than sin theta 4. The dual-axis eccentric compensation device 1 of the present invention needs to compensate the gap difference between the second ports 15 of the second receiving seat 30, that is, the difference D1-d1=d2 (1-cos θ4)/cos θ4 between the required adjustment diameter D2 of the second ports 15 of the second receiving seat 30 and the original diameter D1 of the second bearing 50. Compared to the tolerance Δ2=etanθ4 of the first and second receptacles 20, 30 for reaming, the difference between the required adjustment diameter D2 of the second port 15 of the second receptacle 30 and the original diameter D1 of the second bearing 50 is D2 (1-cos θ4)/cos θ4) < E (sin θ4/cos θ4), which is smaller than the tolerance Δ2 of the first and second receptacles 20, 30 for reaming. Therefore, in the dual-shaft eccentric compensating device 1 of the present invention, when the first bearing 40 and the second bearing 50 are respectively accommodated in the first accommodating seat 20 and the second accommodating seat 30 by utilizing the inner guide angle (inter-chamfer) formed by the first accommodating seat 20 and the second accommodating seat 30, the first bearing 40 and the second bearing 50 can be guided by the guiding shaft 60 to change the angle, so that the first bearing 40, the second bearing 50 and the guiding shaft 60 are matched with each other, and the second port 15 opposite to the first port 14 and the second port 40 opposite to the first accommodating seat 20 maintains the original precision, so as to ensure that the printing precision is not affected.

It should be noted that, in other embodiments, when the first and second accommodation seats 20 and 30 are produced, the axis C1 of the first accommodation seat 20 and the axis C2 of the second accommodation seat 30 may generate the angle difference and the eccentric tolerance at the same time. In the dual-shaft eccentric compensating device 1 of the present invention, when the first bearing 40 and the second bearing 50 are respectively accommodated in the first accommodating seat 20 and the second accommodating seat 30 by utilizing the inner guide angle (inter-chamfer) formed by the first accommodating seat 20 and the second accommodating seat 30, the first bearing 40 and the second bearing 50 are guided by the guide shaft 60 to change angles, so that the first bearing 40, the second bearing 50 and the guide shaft 60 are matched with each other, and the first port 14 opposite to the first accommodating seat 20 and the second port 15 opposite to the second accommodating seat 40 maintain the original precision, so as to ensure that the printing precision is not affected.

In summary, the present invention provides a dual-axis hole eccentricity compensation device for a printer. An inner guide angle (Internal chamfer) is formed in the accommodating seat of the bearing, when the bearing is accommodated in the accommodating seat, the bearing can be guided to change the angle, so that the bearing and the guide shaft are matched with each other, the top ends of the accommodating seats of the double bearings maintain the original precision, and the printing precision is not influenced. Because the accommodating seats of the double bearings are provided with inner guide angles, when the accommodating seats are arranged on the bearing seats and eccentric or bending phenomena are generated between the accommodating seats due to production process tolerances, the bearings accommodated in the accommodating seats can be guided by the guide shafts to change angles, so that the guide shafts can be connected with the bearings in the accommodating seats in series. On the other hand, the angle design of the inner guide angle of the accommodating seat can be adjusted and designed according to the allowable process tolerance, so that the production reject ratio is effectively reduced, the assembly flow is simplified, the cost is saved, and the operation efficiency is improved. The double-shaft hole eccentric compensation device has a special structure of an inner guide angle, and the bearing is guided to slightly change the angle directly through the inner guide angle. The bearing may be, for example, a plastic bearing or a Pelin, and is not limited to any form, and is not required to be specifically tapered. In addition, the invention does not need to use a gasket, when the bearing which is required to be arranged on the supporting seat body of the printer nozzle is relatively deformed due to production tolerance, the compensation angle can be automatically carried out through the design of the inner lead angle, so that the guide shaft can pass through the two bearings and can be accurately matched due to the automatic compensation angle of the bearings, and the assembly cannot be realized.

The present invention is modified as desired by those skilled in the art, but is not to be construed as limited by the appended claims.

Claims

1. A dual-axis hole eccentricity compensation device, comprising:

the support seat body is provided with a first side edge, a second side edge and a guide channel, wherein the first side edge and the second side edge are opposite to each other, the guide channel penetrates through the first side edge and forms a first port, and the guide channel penetrates through the second side edge and forms a second port;

the first accommodating seat is embedded in the supporting seat body, is connected with the first port, and penetrates through the first accommodating seat, wherein the inner diameter of the first accommodating seat is gradually increased along the first port towards the direction of the guide channel;

the second accommodating seat is embedded in the supporting seat body in space relative to the first accommodating seat, is connected with the second port, and the guide channel penetrates through the second accommodating seat, wherein the second accommodating seat gradually increases the inner diameter of the second accommodating seat along the second port towards the direction of the guide channel;

the first bearing is accommodated in the first accommodating seat and provided with a first end and a second end which are opposite to each other, wherein the first end is connected with the first port;

the second bearing is accommodated in the second accommodating seat and provided with a first end and a second end which are opposite to each other, wherein the first end is connected with the second port; and

the guide shaft penetrates through the first bearing, the guide channel and the second bearing, wherein when the guide shaft penetrates through the first bearing, the second end of the first bearing and the first accommodating seat form a first adjusting angle, and when the guide shaft penetrates through the second bearing, the second end of the second bearing and the second accommodating seat form a second adjusting angle so as to facilitate the guide shaft to guide the supporting seat to slide relative to the guide shaft;

the double-shaft hole eccentric compensation device has a special structure of an inner guide angle, and the first bearing and the second bearing are guided to slightly change angles directly through the inner guide angle.

2. The dual-shaft eccentric compensating apparatus of claim 1, further comprising at least one first limiting member and at least one second limiting member, wherein the at least one first limiting member is disposed adjacent to an outer periphery of the first port, at least partially covers the first end of the first bearing, and prevents the first bearing from being separated from the first port, wherein the at least one second limiting member is disposed adjacent to an outer periphery of the second port, at least partially covers the first end of the second bearing, and prevents the second bearing from being separated from the second port.

3. The dual-shaft eccentric compensating apparatus as recited in claim 2, wherein the first bearing comprises an extension portion, the first receiving seat comprises a pair of positioning grooves adjacent to the first port and spatially corresponding to the extension portion of the first bearing, when the first bearing is received in the first receiving seat, the extension portion of the first bearing and the pair of positioning grooves of the first receiving seat are tightly matched with each other, and the first limiting member at least partially covers the extension portion of the first bearing; the second bearing comprises an extension part, the second accommodating seat comprises a pair of positioning grooves which are adjacently arranged at the second port and correspond to the extension part of the second bearing in space, when the second bearing is accommodated in the second accommodating seat, the extension part of the second bearing and the pair of positioning grooves of the second accommodating seat are tightly matched with each other, and the second limiting piece at least partially covers the extension part of the second bearing.

4. The dual-axis eccentricity compensation apparatus according to claim 3, wherein the first housing further comprises a connection slope connected between a portion of the first housing along the guiding channel and the alignment slot of the first housing; the second accommodation seat also comprises a connection inclined plane which is connected between the part of the second accommodation seat along the guide channel and the alignment groove of the second accommodation seat.

5. The dual-axis eccentricity compensation apparatus according to claim 1, wherein the first receiving seat has a first inner guiding angle with respect to the first port toward the guiding channel, and the second receiving seat has a second inner guiding angle with respect to the second port toward the guiding channel.

6. The dual-axis hole eccentricity compensation device according to claim 5, wherein the first inner lead angle and the second inner lead angle are in a range of 0.5 degrees to 15 degrees.

7. The dual-axis hole eccentricity compensation recited in claim 5, wherein the first adjustment angle is less than or equal to the first inner lead angle and the second adjustment angle is less than or equal to the second inner lead angle.

8. The dual-axis eccentricity compensation apparatus according to claim 1 wherein the first housing has a circular-table-shaped housing, the center of the first port being aligned with the center of the upper bottom surface of the circular-table-shaped housing; the second accommodating seat is provided with a circular truncated cone-shaped accommodating space, and the center of the second port is aligned with the center of the upper bottom surface of the circular truncated cone.

9. The dual-axis eccentricity compensation apparatus of claim 1, wherein the support base assembly carries a showerhead module.

10. The dual bore eccentric compensating apparatus of claim 1, wherein the diameter of the first end of the first bearing is equal to the diameter of the first port, wherein the diameter of the first end of the second bearing is equal to the diameter of the second port.