An ink supply mechanism and printer

Abstract

The application discloses a kind of ink supply mechanism and printer, ink supply mechanism includes body, piston and driving piece.Body is equipped with sliding cavity and with sliding cavity communication ink supply passage.Piston is suitable for repeatedly sliding in sliding cavity, to supply ink by ink supply passage;Driving piece includes main body and output shaft, output shaft is suitable for telescopic along first direction relative to main body, one end of output shaft is connected with main body, the other end of output shaft is fixed with piston, so that piston repeatedly moves.Main body is suitable for when piston is against the cavity bottom of sliding cavity, and output shaft is further elongated relative to main body, main body slides in the direction away from the cavity bottom of sliding cavity, by the action, it is guaranteed that piston can be against the cavity bottom of sliding cavity, to empty the air and ink in sliding cavity, cannot be because main body and body are mutually fixed dead, leading to the damage of output shaft or main body.When piston is away from the cavity bottom of sliding cavity, main body is reset to abut with body by gravity or biasing force, so that main body returns to initial position, guarantee normal ink replenishment.

Description

Technical Field

[0001] The present invention relates to the field of printing equipment, and in particular to an ink supply mechanism and a printer. Background Art

[0002] In the prior art, with the gradual popularization of inkjet printing equipment, the methods of ink suction and ink pressing have become diversified. One of the methods is to rely on a motor to drive the piston movement to achieve the ink suction action, and then to achieve ink replenishment for each print. However, there may be errors in the long-term movement of the piston, which may lead to insufficient ink replenishment. In the prior art, the position of the piston movement cannot be detected, and the motor is usually controlled by software to ensure that the piston reaches the bottom with a movement amount greater than the rated stroke, that is, the zero point position of the piston is determined by the "stall" of the motor, and then it starts to retreat to the starting point from the "stall" point, and finally ensures that the piston movement process is always in the working area. However, long-term stalling causes the motor screw and the mating end faces of the mating parts to over-fit, affecting the life of the motor and damaging the motor screw. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems in the background technology and to provide an ink supply mechanism and a printer.

[0004] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Solution 1: an ink supply mechanism, comprising

[0006] a body, which is provided with a sliding cavity extending along a first direction and an ink supply channel communicating with the sliding cavity;

[0007] a piston adapted to slide repeatedly in the sliding chamber to supply ink through the ink supply channel;

[0008] The driving member includes a main body and an output shaft, the output shaft is suitable for extending and retracting relative to the main body along a first direction, one end of the output shaft is connected to the main body, and the other end of the output shaft is fixedly connected to the piston; the main body is suitable for sliding relative to the main body along the first direction; the main body is suitable for sliding in a direction away from the bottom of the sliding cavity when the piston abuts against the bottom of the sliding cavity and the output shaft is further extended relative to the main body, and when the piston is away from the bottom of the sliding cavity, the main body is reset to abut against the main body due to gravity or bias force.

[0009] Option 2, based on Option 1, further includes a biasing member, and the main body is reset to abut the main body under the action of the biasing force, and the two ends of the biasing member act on the main body and the main body respectively to apply a force parallel to the first direction to the main body and cause the main body to slide toward the bottom of the sliding cavity.

[0010] Option three, based on option two, the biasing members are provided in several groups, and the biasing members in each group are symmetrically arranged on both sides of the central axis of the main body.

[0011] Option 4, based on Option 3, the main body is provided with a first limiting surface and a first abutting surface perpendicular to the first direction, the main body is provided with a second abutting surface parallel to the first abutting surface, and a second limiting surface parallel to the first limiting surface, the two ends of the biasing member act on the first limiting surface and the second limiting surface respectively, and when the main body is reset, the second abutting surface abuts against the first abutting surface.

[0012] Option 5, based on Option 4, the main body includes a shell and several fasteners, the number of the fasteners is the same as the number of biasing members and corresponds one to one, the shell is provided with the sliding cavity, the ink supply channel and the first abutting surface, the shell is also provided with several threaded holes opening on the first abutting surface, the depth of each threaded hole is the same, the fastener is provided with a screw and the first limiting surface, the screw is threadedly connected to the threaded hole and abuts against the bottom of the threaded hole.

[0013] Option six, based on option five, the main body includes a shell and a seat, the shell is provided with the sliding cavity, the ink supply channel and the first abutting surface, and the seat is fixedly connected to the shell and provided with the first limiting surface.

[0014] Option seven, based on option one, the main body is provided with a first sliding part, the main body is provided with a second sliding part, one of the first sliding part and the second sliding part is a sliding hole, and the other is a guide column that slides with the sliding hole and extends along the first direction.

[0015] Option 8, based on Option 7, the sliding hole is a runway-shaped hole.

[0016] Option 9, based on Option 1, the ink supply channel is provided with a one-way valve upstream and downstream of the position where it is connected to the sliding chamber.

[0017] Solution 10: A printer comprising an ink supply mechanism as described in any one of Solutions 1 to 9.

[0018] From the above description of the present invention and its preferred embodiments, it can be seen that compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0019] 1. In solution 1 and its preferred embodiment, an ink supply mechanism includes a body, a piston and a driving member.

[0020] The main body is used for installing other components. The main body is provided with a sliding cavity and an ink supply channel connected to the sliding cavity. The printing ink upstream of the ink supply channel is suitable for entering the sliding cavity and then flowing to the print head from the downstream of the ink supply channel.

[0021] The piston is adapted to slide repeatedly in the sliding cavity to supply ink through the ink supply channel;

[0022] The driving member includes a main body and an output shaft. The output shaft is suitable for stretching and contracting relative to the main body along a first direction. One end of the output shaft is connected to the main body, and the other end of the output shaft is fixed to the piston to enable the piston to move repeatedly.

[0023] The main body is suitable for sliding in a first direction relative to the main body. The main body is suitable for when the piston abuts the bottom of the sliding cavity and the output shaft is further extended relative to the main body. Since the main body and the output shaft are connected, when the end of the output shaft fixed to the piston cannot slide further toward the bottom of the sliding cavity, the end of the output shaft connected to the main body will be extended, thereby driving the main body to slide relative to the main body, which is manifested as the main body sliding in a direction away from the bottom of the sliding cavity. This action ensures that the piston can abut the bottom of the sliding cavity to empty the air and ink in the sliding cavity. Since the main body is movable, the output shaft or the main body will not be damaged due to the mutual locking of the main body and the main body.

[0024] When the piston is away from the bottom of the sliding cavity, the main body is reset to abut against the body under the action of gravity or biasing force, so that the main body returns to the initial position, ensuring normal ink replenishment.

[0025] The main body is reset by gravity, which can make the structure simpler. The main body is reset by biasing force, which is not restricted in the reset direction compared to gravity, is more stable, and can provide a certain shock absorption effect.

[0026] 2. In the second scheme and its preferred embodiment, the main body is reset to the body abutment under the action of the biasing force, and the two ends of the biasing member act on the main body and the main body respectively to apply a force parallel to the first direction to the main body and make the main body slide toward the bottom of the sliding cavity, thereby realizing the reset of the main body with good stability, and the force is parallel to the first direction, preventing the main body from deflecting, causing the main body to get stuck, and affecting the possibility of resetting the main body and extending and retracting the output shaft.

[0027] 3. In Option 3 and its preferred embodiment, the biasing members are provided in multiple groups to increase the biasing force and ensure stable resetting. Furthermore, the biasing members are symmetrically positioned on either side of the central axis of the main body, balancing the biasing forces of the biasing members and preventing deflection of the main body due to imbalanced biasing forces.

[0028] 4. In the fourth solution and its preferred embodiment, the first limiting surface and the second limiting surface are parallel to each other and perpendicular to the first direction, so that when the two ends of the biasing member act on the first limiting surface and the second limiting surface respectively, a force parallel to the first direction is applied to the main body to prevent the main body from deflecting;

[0029] Since the first abutting surface and the second abutting surface are parallel and tilted relative to each other, the biasing member's force will not be parallel to the first direction, but the first abutting surface and the second abutting surface will still cause the main body to deflect when they are in contact, causing the main body to get stuck.

[0030] 5. In scheme five and its preferred embodiment, the main body includes a shell and a plurality of fasteners. The shell is further provided with a plurality of threaded holes opening at the first abutting surface. The depth of each threaded hole is the same. The fastener is provided with a screw and a first limiting surface. The screw is screwed to the threaded hole and abuts against the bottom of the threaded hole, thereby ensuring that after the screw and the threaded hole of each fastener are matched, the first limiting surfaces are located in the same plane, so that the force applied by each biasing member to the main body is consistent, the main body is evenly stressed and does not deflect.

[0031] 6. In Solution 6 and its preferred embodiment, Solution 5 requires ensuring that the first limiting surface of each fastener and the screw are aligned and that the depth of each threaded hole is the same, which imposes many constraints to ensure that the force exerted by each biasing member on the main body is consistent. In this solution, however, the first limiting surface is provided only on the base, which is easier to manufacture and ensures accuracy.

[0032] 7. In scheme seven and its preferred embodiment, the main body is provided with a first sliding part, and the main body is provided with a second sliding part. One of the first sliding part and the second sliding part is a sliding hole, and the other is a guide column that slides with the sliding hole and extends along the first direction, so that the sliding of the main body has guidance and the sliding is more stable.

[0033] 8. In the eighth scheme and its preferred embodiments, since the position of the main body is not fixed, the center axis of the piston may deviate from the center axis of the sliding cavity, and the piston may be suffocated. The sliding hole is a runway-shaped hole, and its size in one direction is larger than the guide column. This prevents the sliding hole and the guide column from having difficulty in matching due to processing problems when the size of the sliding hole and the guide column are the same. At the same time, it can also achieve self-adaptation during sliding, solving the problem of the center axis of the piston deviating from the center axis of the sliding cavity due to the non-fixed position of the main body, which leads to easy suffocation of sliding.

[0034] 9. In the ninth solution and its preferred embodiment, the ink supply channel is provided with a one-way valve upstream and downstream of the position where it is connected to the sliding cavity to prevent ink from flowing back.

[0035] 10. In solution 10 and its preferred embodiment, a printer includes the above-mentioned ink supply mechanism, which has the beneficial effects brought by the above-mentioned ink supply mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 is a three-dimensional diagram of the ink supply mechanism in Example 1;

[0038] Figure 2 is a three-dimensional diagram of the housing in Example 1;

[0039] Figure 3 A three-dimensional diagram of the housing in embodiment 1 from another perspective;

[0040] Figure 4 This is a diagram showing the coordination of the driving member and the piston in Example 1;

[0041] Figure 5 A bottom view of the driving member and the piston in the first embodiment;

[0042] Figure 6 This is a schematic diagram of the structure in which the main body and the body are offset against each other in the first embodiment;

[0043] Figure 7 This is a schematic diagram of the structure in which the main body and the body are separated in Example 1;

[0044] Figure 8 is a three-dimensional diagram of the ink supply mechanism in Example 2;

[0045] Figure 9 This is a schematic diagram of the structure in which the main body and the body are offset against each other in the second embodiment;

[0046] Description of main reference numerals:

[0047] Body 1; housing 11; sliding chamber 111; ink supply channel 112; first abutting surface 113; threaded hole 114; first sliding portion 115; fastener 12; screw 121; first limiting surface 122; seat 13; piston 2; driving member 3; main body 31; square hole 311; rotating rod 312; second limiting surface 313; second abutting surface 314; second sliding portion 315; output shaft 32; biasing member 4; first direction 5; DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] In the claims, description and drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is for the purpose of distinguishing different objects rather than for describing a specific order.

[0050] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention.

[0051] In the claims, description and above-mentioned drawings of the present invention, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0052] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0053] refer to Figure 1-Figure 7 A printer includes an ink supply mechanism, which includes a body 1, a piston 2, a driving member 3 and a biasing member 4.

[0054] The body 1 includes a shell 11 and several fasteners 12.

[0055] refer to Figure 2 、 Figure 3 The housing 11 is provided with a sliding cavity 111, an ink supply channel 112, a first abutting surface 113, and a threaded hole 114;

[0056] In this embodiment, the first abutment surface 113 is perpendicular to the first direction 5 and faces upward, wherein the first direction 5 is the sliding direction of the piston 2 in this embodiment. The sliding chamber 111 extends along the first direction 5 and has an opening above it. The opening is formed on the first abutment surface 113. The bottom of the sliding chamber 111 is connected to the ink supply channel 112. The ink supply channel 112 is used to supply ink. The ink supply channel 112 is provided with a one-way valve upstream and downstream of the position where it is connected to the sliding chamber 111. A threaded hole 114 opens on the first abutment surface 113. There is at least one threaded hole 114, and each threaded hole 114 has the same depth. In this embodiment, there are four threaded holes 114, and each threaded hole 114 is symmetrically arranged on both sides of the central axis of the mounting chamber.

[0057] refer to Figure 6 、 Figure 7 The number of fasteners 12 is the same as the number of threaded holes 114, and they correspond one to one. The fasteners 12 are provided with screws 121 and first limiting surfaces 122. The fasteners 12 are in the form of screws. In this embodiment, the first limiting surfaces 122 are parallel to the first abutting surfaces 113. In this embodiment, the first abutting surfaces 113 are arranged downward. The screws 121 are adapted to be threadedly engaged with the threaded holes 114 and abut against the bottoms of the threaded holes 114. Since the threaded holes 114 have the same depth and the fasteners 12 have the same specifications, the first limiting surfaces 122 of the fasteners 12 can be located on the same plane.

[0058] refer to Figure 6 、 Figure 7 The piston 2 is adapted to slide repeatedly along the first direction 5 in the sliding cavity 111 to supply ink through the ink supply channel 112 , and the piston 2 is sealed with the cavity wall of the sliding cavity 111 by a sealing ring.

[0059] refer to Figure 6 、 Figure 7 The driving member 3 includes a main body 31 and an output shaft 32. The output shaft 32 is adapted to extend and retract relative to the main body 31 in a first direction 5. One end of the output shaft 32 is connected to the main body 31, and the other end of the output shaft 32 is fixedly connected to the piston 2, thereby driving the piston 2 to repeatedly slide in the first direction 5. Specifically, the outer shell of the main body 31 is engaged with the output shaft 32 for rotation prevention. In this embodiment, the cross-section of the output shaft 32 is square, and the outer shell of the main body 31 has a square hole 311 that engages with the output shaft 32 for rotation prevention. The main body 31 also includes a rotating rod 312 that is threadedly connected to the output shaft 32. When the rotating rod 312 rotates, the output shaft 32 cannot rotate, thereby converting the rotation of the rotating rod 312 into a telescopic motion of the output shaft 32.

[0060] refer to Figure 4 、 Figure 5The main body 31 is suitable for sliding relative to the main body 1 along the first direction 5; the main body 31 is provided with a second limiting surface 313 and a second abutting surface 314 parallel to the first abutting surface 113. In this embodiment, the second limiting surface 313 is set upward and the second abutting surface 314 is set downward.

[0061] refer to Figure 6 、 Figure 7 The two ends of the biasing member 4 act on the body 1 and the main body 31, respectively, to apply a force to the main body 31 that causes it to slide toward the bottom of the sliding cavity 111. The number of biasing members 4 is the same as the number of fasteners 12, and each biasing member 4 is symmetrically arranged on either side of the central axis of the main body 31 (in this embodiment, the central axis of the main body 31 coincides with the central axis of the sliding cavity 111) to more evenly apply force to the main body 31 and prevent it from deflecting. In other embodiments, only one set of biasing members 4 may be provided, and the force applied by the biasing members 4 coincides with the central axis of the main body 31.

[0062] The biasing member 4 can be an elastic member (such as a spring or rubber), a magnetic member that repels or attracts each other, or the like. In this embodiment, the biasing member 4 is an elastic member. The screw 121 penetrates the elastic member and the main body 31 and is screwed to the threaded hole 114, so that the two ends of the biasing member 4 act on the first limiting surface 122 and the second limiting surface 313, respectively. To prevent the elastic member from moving, limiting posts or limiting grooves can be provided on the main body 31 and the main body 1 at the corresponding locations of the elastic member to retain the elastic member. The biasing force F1 applied by the biasing member 4 on the main body 31 is greater than the resistance F2 encountered by the piston 2 during normal movement, but less than the force F3 applied by the piston 2 on the main body 31 when the piston 2 contacts the bottom of the sliding cavity 111 and the output shaft 32 further extends relative to the main body 31. Therefore, when the piston 2 moves in the normal operating range, the main body 31 will not slide relative to the main body 1, thereby improving the stability of the piston 2's movement.

[0063] The main body 1 is provided with a first sliding portion 115, and the main body 31 is provided with a second sliding portion 315. One of the first sliding portion 115 and the second sliding portion 315 is a sliding hole, preferably a runway-shaped hole, and the other is a guide post that slidably engages with the sliding hole and extends along the first direction 5. In this embodiment, the main body 1 has both a sliding hole and a guide post. The sliding hole opens on the first abutting surface 113, and the guide post is formed by the screw 121 of the fastener 12. Correspondingly, the main body 31 also has a sliding hole corresponding to the guide post on the main body 1, and a guide post corresponding to the sliding hole.

[0064] When using, refer to Figure 6 、 Figure 7When the piston 2 moves away from the bottom of the sliding chamber 111 (with a gap between them), the main body 31 is reset by the biasing force, the first limiting surface 122 and the second limiting surface 313 move away from each other, and the second abutting surface 314 abuts the first abutting surface 113. At this time, ink enters the sliding chamber 111 from the upstream side of the ink supply channel 112. When the piston 2 moves toward the bottom of the sliding chamber 111, ink flows from the sliding chamber 111 into the downstream side of the ink supply channel 112, completing the ink supply. To ensure the exhaust of ink and air, the output shaft 32 is extended slightly greater than the length of the sliding chamber 111. Therefore, when the piston 2 abuts the bottom of the sliding chamber 111, the output shaft 32 may further extend relative to the main body 31. At this time, the main body 31 is adapted to slide away from the bottom of the sliding chamber 111, causing the second abutting surface 314 to disengage from the first abutting surface 113. The first limiting surface 122 and the second limiting surface 313 move toward each other, and the biasing member 4 stores energy. The output shaft 32 is then shortened until the second abutment surface 314 engages the first abutment surface 113, and the piston 2 slides away from the bottom of the sliding chamber 111. This is the piston 2's zero return action. During normal ink replenishment, it is sufficient to ensure that the piston 2 slides within its normal operating range. That is, during normal ink replenishment, when the piston 2 abuts the bottom of the sliding chamber 111, the output shaft 32 shortens relative to the main body 31. After a period of normal ink replenishment, the piston 2's zero return action is performed. This ensures the piston 2's positional accuracy while preventing the idle travel caused by the zero return action from affecting ink replenishment efficiency.

[0065] Compared with the prior art, this embodiment has the following beneficial effects:

[0066] In an exemplary embodiment, an ink supply mechanism includes a body 1 , a piston 2 and a driving member 3 .

[0067] The main body 1 is used for installing other components. The main body 1 is provided with a sliding cavity 111 and an ink supply channel 112 connected to the sliding cavity 111. The printing ink upstream of the ink supply channel 112 is suitable for entering the sliding cavity 111 and then flowing to the print head from the downstream of the ink supply channel 112.

[0068] The piston 2 is adapted to slide repeatedly in the sliding chamber 111 to supply ink through the ink supply channel 112;

[0069] The driving member 3 includes a main body 31 and an output shaft 32. The output shaft 32 is suitable for extending and retracting relative to the main body 31 along the first direction 5. One end of the output shaft 32 is connected to the main body 31, and the other end of the output shaft 32 is fixed to the piston 2 to enable the piston 2 to move repeatedly.

[0070] The main body 31 is suitable for sliding along the first direction 5 relative to the main body 1. The main body 31 is suitable for when the piston 2 abuts against the bottom of the sliding cavity 111 and the output shaft 32 is further extended relative to the main body 31. Since the main body 31 is connected to the output shaft 32, when the end of the output shaft 32 fixed to the piston 2 cannot slide further toward the bottom of the sliding cavity 111, the end of the output shaft 32 connected to the main body 31 will be extended, thereby driving the main body 31 to slide relative to the main body 1, which is manifested as the main body 31 sliding in the direction away from the bottom of the sliding cavity 111. This action ensures that the piston 2 can abut against the bottom of the sliding cavity 111 to empty the air and ink in the sliding cavity 111. Since the main body 31 is movable, the main body 31 and the main body 1 will not be locked together, resulting in damage to the output shaft 32 or the main body 31.

[0071] When the piston 2 moves away from the bottom of the sliding chamber 111, the main body 31 is reset by the biasing force until it abuts against the body 1, returning the main body 31 to its initial position and ensuring normal ink refilling. The main body 31 is reset by the biasing force, which is not restricted by gravity, and is more stable and can provide a certain degree of shock absorption.

[0072] In an exemplary embodiment, the main body 31 is reset to abut the main body 1 under the action of the biasing force, and the two ends of the biasing member 4 act on the main body 1 and the main body 31 respectively to apply a force parallel to the first direction 5 to the main body 31, and cause the main body 31 to slide toward the bottom of the cavity close to the sliding cavity 111, thereby realizing the reset of the main body 31 with good stability, and the force is parallel to the first direction 5, preventing the main body 31 from deflecting, causing the main body 31 to get stuck, and affecting the possibility of resetting the main body 31 and extending and retracting the output shaft 32.

[0073] In one exemplary embodiment, the biasing members 4 are provided in multiple groups to increase the biasing force and ensure stable resetting. Furthermore, the biasing members 4 are symmetrically positioned on either side of the central axis of the main body 31, balancing the biasing forces of the biasing members 4 and preventing deflection of the main body 31 due to uneven biasing forces.

[0074] In an exemplary embodiment, the first limiting surface 122 and the second limiting surface 313 are parallel to each other and perpendicular to the first direction 5, so that when the two ends of the biasing member 4 act on the first limiting surface 122 and the second limiting surface 313 respectively, a force parallel to the first direction 5 is applied to the main body 31 to prevent the main body 31 from deflecting.

[0075] Since the first abutting surface 113 and the second abutting surface 314 are parallel and not tilted relative to each other, although the force of the biasing member 4 is parallel to the first direction 5, the first abutting surface 113 and the second abutting surface 314 still cause the main body 31 to deflect when they are in contact, causing the main body 31 to get stuck.

[0076] In an exemplary embodiment, the main body 1 includes a shell 11 and a plurality of fasteners 12. The shell 11 is also provided with a plurality of threaded holes 114 opening at the first abutting surface 113. The depth of each threaded hole 114 is the same. The fastener 12 is provided with a screw 121 and a first limiting surface 122. The screw 121 is screwed into the threaded hole 114 and abuts against the bottom of the threaded hole 114, thereby ensuring that after the screw 121 of each fastener 12 is mated with the threaded hole 114, the first limiting surfaces 122 are located in the same plane, so that the force applied by each biasing member 4 to the main body 31 is consistent, and the main body 31 is evenly stressed and does not deflect.

[0077] In an exemplary embodiment, the main body 1 is provided with a first sliding part 115, and the main body 31 is provided with a second sliding part 315. One of the first sliding part 115 and the second sliding part 315 is a sliding hole, and the other is a guide column that slides with the sliding hole and extends along the first direction 5, so that the sliding of the main body 31 has guidance and the sliding is more stable.

[0078] In an exemplary embodiment, since the position of the main body 31 is not fixed, the center axis of the piston 2 may deviate from the center axis of the sliding cavity 111, and the piston 2 may be suffocated. The sliding hole is a runway-shaped hole, and its size in one direction is larger than the guide column. This prevents the sliding hole and the guide column from having difficulty in matching due to processing problems when the two are the same size. At the same time, it can also achieve self-adaptation during sliding, solving the problem of easy suffocation due to the deviation of the center axis of the piston 2 from the center axis of the sliding cavity 111 caused by the non-fixed position of the main body 31.

[0079] In an exemplary embodiment, the ink supply channel 112 is provided with a one-way valve upstream and downstream of the position where it communicates with the sliding chamber 111 to prevent ink from flowing back.

[0080] Example 2:

[0081] In the above embodiment, the biasing member 4 is installed by a plurality of fasteners 12, and the first limiting surfaces 122 of the fasteners 12 are located on the same plane, so that the forces exerted by the biasing members 4 on the main body 31 are consistent. Figure 8 、 Figure 9 The difference between this embodiment and the first embodiment is that each biasing member 4 is uniformly matched with a seat body 13.

[0082] Specifically, the main body 1 includes a housing 11 and a base 13. The housing 11 is provided with a sliding cavity 111, an ink supply channel 112, and a first abutting surface 113. The base 13 is fixedly connected to the housing 11 and is provided with a first limiting surface 122. The base 13 and the housing 11 may be fixedly connected by threaded engagement, screw locking, bonding, or clamping. The operating principle of this embodiment is consistent with that of the first embodiment. Both embodiments achieve corresponding actions through the energy storage and release of the biasing member 4, and will not be further elaborated.

[0083] Compared to the first embodiment, which requires ensuring that the first limiting surfaces 122 of each fastener 12 and the screw 121 are aligned and that the depths of each threaded hole 114 are the same, there are many restrictions to ensure that the forces exerted by each biasing member 4 on the main body 31 are consistent. In this embodiment, the first limiting surfaces 122 are provided only on the base 13, making it easier to machine and ensure precision, thereby ensuring that the forces exerted by each biasing member 4 on the main body 31 are consistent.

[0084] Example 3:

[0085] In the above embodiments, the main body 31 is reset by the force of the biasing member 4. In this embodiment, the main body 31 is reset by its own gravity to abut against the main body 1. In this embodiment, the main body 31 needs to be farther away from the ground than the main body 1, that is, the first abutting surface 113 needs to face upward and the second abutting surface 314 needs to face downward. However, the main body 31 is reset by gravity, which can make the structure simpler.

[0086] Specifically, when the piston 2 is away from the bottom of the sliding cavity 111 , the main body 31 is reset to abut against the body 1 due to gravity.

[0087] The above description and embodiments are intended to explain the scope of protection of the present invention, but do not constitute a limitation thereto. Modifications, equivalent substitutions, or other improvements to the embodiments of the present invention or portions thereof that can be obtained by a person of ordinary skill in the art through logical analysis, reasoning, or limited experimentation based on the teachings of the present invention or the above embodiments, combined with common knowledge, ordinary technical knowledge in the field, and / or prior art, should all be included within the scope of protection of the present invention.

Claims

1. An ink supply mechanism, characterized in that: include A body (1) is provided with a sliding cavity (111) extending along a first direction (5) and an ink supply channel (112) communicating with the sliding cavity (111); a piston (2) adapted to slide repeatedly in the sliding chamber (111) to supply ink through the ink supply channel (112); A driving member (3) comprises a main body (31) and an output shaft (32), wherein the output shaft (32) is adapted to be telescopic relative to the main body (31) along a first direction (5), one end of the output shaft (32) is connected to the main body (31), and the other end of the output shaft (32) is fixedly connected to the piston (2); the main body (31) is adapted to slide relative to the main body (1) along the first direction (5); the main body (31) is adapted to be telescopic relative to the main body (1) when the piston (2) abuts against the bottom of the sliding cavity (111) and the output shaft (32) is fixedly connected to the piston (2); When the shaft (32) is further extended relative to the main body (31), it slides in a direction away from the bottom of the sliding cavity (111). When the piston (2) is away from the bottom of the sliding cavity (111), the main body (31) is reset to abut against the main body (1) by gravity or biasing force. The biasing force is provided by the biasing member (4). The main body (31) is reset to abut against the main body (1) by the biasing force, and the two ends of the biasing member (4) act on the main body (1) and the main body (31) respectively.

2. An ink supply mechanism according to claim 1, characterized in that: It also includes a biasing member (4), which applies a force parallel to the first direction (5) to the main body (31) and causes the main body (31) to slide toward the bottom of the sliding cavity (111).

3. An ink supply mechanism according to claim 2, characterized in that: The biasing members (4) are provided in a plurality of groups, and each group of biasing members (4) is symmetrically arranged on both sides of the central axis of the main body (31).

4. An ink supply mechanism according to claim 3, characterized in that: The main body (1) is provided with a first limiting surface (122) and a first abutting surface (113) perpendicular to the first direction (5); the main body (31) is provided with a second abutting surface (314) parallel to the first abutting surface (113), and a second limiting surface (313) parallel to the first limiting surface (122); the two ends of the biasing member (4) act on the first limiting surface (122) and the second limiting surface (313) respectively; when the main body (31) is reset, the second abutting surface (314) abuts against the first abutting surface (113).

5. An ink supply mechanism according to claim 4, characterized in that: The main body (1) includes a shell (11) and a plurality of fasteners (12), the number of the fasteners (12) is the same as the number of the biasing members (4) and corresponds one to one, the shell (11) is provided with the sliding cavity (111), the ink supply channel (112) and the first abutting surface (113), the shell (11) is further provided with a plurality of threaded holes (114) opening on the first abutting surface (113), the depth of each threaded hole (114) is the same, the fastener (12) is provided with a screw (121) and the first limiting surface (122), the screw (121) is screwed to the threaded hole (114) and abuts against the bottom of the threaded hole (114).

6. An ink supply mechanism according to claim 5, characterized in that: The main body (1) comprises a shell (11) and a seat (13); the shell (11) is provided with the sliding cavity (111), the ink supply channel (112) and the first abutting surface (113); the seat (13) is fixedly connected to the shell (11) and is provided with the first limiting surface (122).

7. The ink supply mechanism according to claim 1, wherein: The main body (1) is provided with a first sliding portion (115), and the main body (31) is provided with a second sliding portion (315). One of the first sliding portion (115) and the second sliding portion (315) is a sliding hole, and the other is a guide column that slides with the sliding hole and extends along the first direction (5).

8. An ink supply mechanism according to claim 7, characterized in that: The sliding hole is a runway-shaped hole.

9. The ink supply mechanism according to claim 1, wherein: The ink supply channel (112) is provided with a one-way valve upstream and downstream of the position where it communicates with the sliding chamber (111).

10. A printer, characterized in that: It comprises an ink supply mechanism as described in any one of claims 1-9.

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