CN111070913A

CN111070913A - Nail printing device

Info

Publication number: CN111070913A
Application number: CN201811221391.4A
Authority: CN
Inventors: 胡亮军; 林镇清; 朱红卫; 林玮; 黄婷
Original assignee: Shenzhen Nearbyexpress Technology Development Co Ltd
Current assignee: Shenzhen Nearbyexpress Technology Development Co Ltd
Priority date: 2018-10-19
Filing date: 2018-10-19
Publication date: 2020-04-28

Abstract

The invention belongs to the field of transmission, and discloses two nail printing devices, wherein one nail printing device comprises a sliding block, an ink box, a sliding rail, an annular belt and a connecting piece, wherein the ink box is fixed on the sliding block, the sliding block is arranged on the sliding rail in a sliding manner, and the inner side surface of the annular belt is provided with a first tooth structure; the connecting piece is fixed on the sliding block and comprises a hook part, and the annular belt is clamped on the hook part; a second tooth structure is arranged on one side surface, facing the first tooth structure, of the hook part, and the first tooth structure is meshed with the second tooth structure; when the annular belt rotates, the annular belt drives the sliding block to move along the sliding rail through the connecting piece. According to the invention, through the meshing and matching design of the first tooth structure and the second tooth structure, the annular belt and the connecting piece are ensured to move at the same direction and speed at the contact position, and the transmission effectiveness is improved.

Description

Nail printing device

Technical Field

The invention belongs to the field of transmission, and particularly relates to a nail printing device.

Background

In order to print a pattern selected by a user on a nail, the nail art machine needs to move the printing head in both the transverse direction and the longitudinal direction, and therefore, the stability and the accuracy of the movement of the printing head have a great influence on the pattern printing effect. At present, some adoption belt drive mode of nail machine on the market, belt drive mode simple structure, the adjustment is convenient, but belt pulley drive produces elastic sliding or skids easily, leads to transmission efficiency not high, influences the printing effect.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a nail printing device, which aims to solve the problem that accurate transmission ratio is difficult to guarantee in belt transmission.

The invention provides a nail printing device, which comprises a sliding block, an ink box and a sliding rail, wherein the ink box is fixed on the sliding block, the sliding block is arranged on the sliding rail in a sliding way, and the ink box moves along the sliding rail along with the sliding block, and is characterized by comprising:

the inner side surface of the annular belt is provided with a first tooth structure;

the connecting piece is fixed on the sliding block and comprises a hook part, and the annular belt is clamped on the hook part;

a second tooth structure is arranged on one side surface, facing the first tooth structure, of the hook part, and the first tooth structure is meshed with the second tooth structure;

when the annular belt rotates, the annular belt drives the sliding block to move along the sliding rail through the connecting piece.

Further, the hook portion includes first riser, connecting plate and second riser, the first riser the connecting plate with the second riser is connected in order and is formed the U-shaped accommodation groove that holds annular belt, the first riser is kept away from the one end of connecting plate connect in the lower surface of slider, the second riser with be equipped with the confession between the lower surface of slider annular belt gets into the space of storage tank, second tooth structure sets up the medial surface of second riser.

Furthermore, the connecting piece still includes the portion of bending, the portion of bending has two, the portion of bending symmetrical arrangement is in the left and right sides of pothook portion and to second riser place one side is extended, the tip distance of the portion of bending the distance of first riser is greater than the second riser distance the distance of first riser, cyclic annular belt card is located in the storage tank, when cyclic annular belt is under the taut state, cyclic annular belt respectively with two the tip looks butt of the portion of bending.

Furthermore, the connecting piece also comprises two bending parts, the two bending parts are symmetrically arranged at the left side and the right side of the clamping hook part and extend to one side of the second vertical plate, the two bending parts are respectively provided with an opening, and the annular belt is clamped in the accommodating groove and the two openings;

when the annular belt is in a tensioned state, the annular belt is pressed against the second vertical plate and against the side walls of the two openings.

Furthermore, the connecting piece still includes the shielding piece, the shielding piece with the second riser can be dismantled and be connected, the shielding piece shelters from the upper end notch of U-shaped holding groove, the shielding piece will cyclic annular belt limit in the holding tank.

Furthermore, the shielding piece is a screw, a screw hole is formed in the end, located at the groove opening, of the accommodating groove, of the second vertical plate, the screw is installed behind the screw hole, and the screw cap of the screw seals the groove opening of the accommodating groove.

Further, the slide rail comprises a first shaft and a second shaft, the first shaft and the second shaft are arranged in parallel on the same horizontal plane, and a certain distance is reserved between the first shaft and the second shaft; the sliding block is arranged on the first shaft and the second shaft in a sliding mode, a supporting part extends outwards from the sliding block in a direction perpendicular to the first shaft and the second shaft, and the ink box is mounted on the supporting part;

when the annular belt rotates, the annular belt drives the sliding block to move along the first shaft and the second shaft through the connecting piece.

Further, the connecting piece is located between the first shaft and the second shaft and close to one side of the ink box.

Furthermore, the slider is provided with a front buckle and a rear buckle on the lower surface of the slider, the front buckle is slidably sleeved on the first shaft, and the rear buckle is slidably sleeved on the second shaft.

Furthermore, first beautiful first printing device still includes the bottom plate, the bottom plate both ends are upwards buckled respectively and are formed first lateral wall and second lateral wall, the primary shaft with the both ends of secondary shaft are fixed in respectively first lateral wall with on the second lateral wall.

Furthermore, first mount and second mount still include first mount and second mount, first mount and second mount are fixed in respectively first lateral wall and second lateral wall, first mount and second mount correspond the position of first axle and second axle has seted up the confession respectively first axle and the male holding hole of second axle.

Further, nail printing device still includes direct current motor, direct current motor is used for driving the endless belt rotates.

Further, first beautiful first printing device still includes the gear train, the gear train include first gear and with the second gear that first gear interval certain distance set up, first gear with the line of second gear is on a parallel with the slide rail, the annular belt cover is located first gear with on the second gear, the first tooth structure of annular belt with first gear with the teeth of a cogwheel of second gear meshes mutually, direct current motor drive first gear revolve, first gear drives when the annular belt rotates, the connecting piece is in first gear with reciprocating motion between the second gear.

The invention also provides a nail printing device, which comprises a sliding block, an ink box and a sliding rail, wherein the sliding block is arranged on the sliding rail in a sliding manner, the sliding rail comprises a first shaft and a second shaft, the first shaft and the second shaft are arranged on the same horizontal plane in parallel, and a certain distance is reserved between the first shaft and the second shaft; the sliding block is arranged on the first shaft and the second shaft in a sliding mode, a supporting part extends outwards from the sliding block in a direction perpendicular to the first shaft and the second shaft, and the ink box is mounted on the supporting part;

the ink cartridge follows the slider to move along the first axis and the second axis.

According to the nail printing device provided by the invention, the connecting piece is arranged, so that the sliding block is connected with the annular belt, and the ink box is driven by the annular belt to move back and forth along the sliding rail. Through the meshing and matching design of the first tooth structure and the second tooth structure, the annular belt and the connecting piece are ensured to move in the same direction and at the same speed at the contact position, and the transmission effectiveness is improved.

According to the other nail printing device provided by the invention, the sliding rails are arranged in parallel in the horizontal direction, so that the stability of the ink box is better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a nail print apparatus of the embodiment;

FIG. 2 is a structural matching view of the connecting member, the endless belt and the slider of the embodiment, the view angle is approximately from bottom to top;

FIG. 3 is a view showing the structural cooperation of the connecting member of the embodiment with the endless belt and the slider, with a view from top to bottom;

FIG. 4 is an enlarged view of a portion of FIG. 2;

FIG. 5 is an enlarged view of FIG. 2 in partial cutaway;

FIG. 6 is a perspective view of the nail print apparatus of the embodiment from another angle;

FIG. 7 is a schematic illustration of the connection of the pretensioning assembly;

FIG. 8 is a disassembled schematic view of the pretensioning assembly.

The reference numbers illustrate:

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be further noted that, in the embodiment of the present invention, the XYZ rectangular coordinate system established in fig. 1 is defined as follows: one side in the positive direction of the X axis is defined as the front, and one side in the negative direction of the X axis is defined as the back; one side in the positive Y-axis direction is defined as the right side, and one side in the negative Y-axis direction is defined as the left side; the side in the positive direction of the Z axis is defined as the upper side, and the side in the negative direction of the Z axis is defined as the lower side.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

The nail printing device is also called nail color drawing machine, digital nail machine, etc. and is one kind of color drawing apparatus capable of drawing pattern on natural nail and artificial nail. The working principle of the nail art machine is that the nail art machine is positioned by an image camera, the coordinates of fingers are calculated by software, and pictures are sprayed on nails by a built-in printer.

Among the factors that influence the printing effect of nail print apparatuses, the movement control of the print head is a critical part thereof. In the structure of the nail printing device, the printing head is usually fixed on the bottom side wall of the ink box, the ink box and the printing head move synchronously, and for convenience of description, the invention replaces the description of the movement precision control of the printing head with the movement control of the ink box.

Example one

Referring to fig. 1 to 8, the present embodiment provides a nail print apparatus, which includes a slider 200, an ink cartridge 100, a slide rail 300, an endless belt 400, a connector 500, a gear set 700, a motor 600, and a bottom plate 900.

The ink box 100 is fixed on the sliding block 200, the sliding block 200 is arranged on the sliding rail 300 in a sliding way, and the ink box 100 moves along the sliding rail 300 along with the sliding block 200; the connecting piece 500 is arranged at the bottom of the sliding block 200, the connecting piece 500 is clamped with the annular belt 400, the annular belt 400 is sleeved on the gear set 700, the annular belt 400 rotates along the gear set 700 under the driving of the motor 600, so that the connecting piece 500 is driven to move, and the sliding block 200 moves along the sliding rail 300 under the pushing of the connecting piece 500; the slide rail 300, the gear set 700, and the motor 600 are fixed to the base plate 900.

Wherein, the inner side surface of the annular belt 400 is provided with a first tooth structure;

the connecting piece 500 is fixed on the sliding block 200, the connecting piece 500 comprises a hook part 510, and the annular belt 400 is clamped on the hook part 510; the side surface of the hook part 510 facing the first tooth structure is provided with a second tooth structure, and the first tooth structure is meshed with the second tooth structure; when the endless belt 400 rotates, the endless belt 400 drives the slider 200 to move along the slide rail 300 through the connecting member 500.

In the embodiment, the connecting member 500 is provided to connect the slider 200 to the endless belt 400, so that the slider 200 is driven by the endless belt 400 to reciprocate along the slide rail 300, and the ink cartridge 100 follows the slider 200 to synchronously reciprocate along the slide rail 300. Through the meshing and matching design of the first tooth structure and the second tooth structure, the annular belt 400 and the connecting piece 500 are ensured to move in the same direction and at the same speed at the contact position, and the transmission effectiveness is improved.

Referring to fig. 2, 4 and 5, the hook portion 510 includes a first riser 513, a web 514 and a second riser 515. The first vertical plate 513, the connecting plate 514 and the second vertical plate 515 are sequentially connected to form a U-shaped accommodating groove 511 for accommodating the endless belt 400, and one end of the first vertical plate 513, which is far away from the connecting plate 514, is connected to the lower surface of the slider 200. A gap for the annular belt 400 to enter the U-shaped accommodating groove 511 is arranged between the second vertical plate 515 and the lower surface of the sliding block 200, and the second tooth structure is arranged on the inner side surface of the second vertical plate 515.

The U-shaped receiving groove 511 defines the forward and backward movement (X-axis direction in the drawing) and the downward movement (negative Z-axis direction in the drawing) of the endless belt 400, and provides a receiving space for the endless belt 400. The provision of the gap facilitates the installation operation of the endless belt 400.

In one embodiment, the connector 500 further includes two bending portions 520, the two bending portions 520 are symmetrically disposed on the left and right sides of the hook portion 510 and extend to one side of the second vertical plate 515, a distance from an end of the bending portion 520 to the first vertical plate 513 is greater than a distance from the second vertical plate 515 to the first vertical plate 513, that is, the bending portion 520 extends rearward, and the end extending rearward is located behind the second vertical plate 515. The annular belt 400 is clamped in the accommodating groove, and when the annular belt 400 is under a tensioned state, the annular belt 400 is respectively abutted against the end portions of the two bending portions 520. That is, the annular belt 400 forms an angle between the left bent portion 520, the U-shaped accommodating groove 511, and the right bent portion 520, and the annular belt 400 is closely attached to the second vertical plate 515 of the U-shaped accommodating groove 511 and the end portions of the two bent portions 520 in an annularly tightened state. This design has further increased the fastening degree of endless belt 400 and connecting piece 500, and under the pretightning force effect of two portions of bending 520, the first tooth structure on endless belt 400 is more firm with the second tooth structure meshing of connecting piece 500, increases endless belt 400 and connecting piece 500 relative movement's frictional force to further improve driven validity and stability.

In another embodiment, referring to fig. 2, 4 and 5, the connecting member 500 further includes two bending portions 520, the two bending portions 520 are symmetrically disposed on the left and right sides of the hook portion 510 and extend toward one side of the second vertical plate 515, the two bending portions 520 are respectively provided with openings 521, the two openings 521 penetrate along the left and right direction to accommodate the passing of the endless belt 400, and extend downward to the upper surface of the bending portion 520 to accommodate the sleeving of the endless belt 400 from below, and the two openings 521 are disposed opposite to each other. The annular belt 400 is clamped in the U-shaped accommodating groove 511 and the two openings 521; when endless belt 400 is under tension, endless belt 400 lies horizontally and simultaneously bears against second riser 515 and the sidewalls of both openings 521.

The fitting installation steps of the endless belt 400 and the link 500 are referred to as follows: the endless belt 400 is first inserted into the two openings 521 from the bottom to the top (positive Z-axis), and then the endless belt 400 between the two openings 521 is moved backward (negative X-axis) to reach the region above the U-shaped accommodating groove 511 and is then inserted into the U-shaped accommodating groove 511 downward (negative Z-axis). After assembly, the endless belt 400 is limited in the downward direction by the bottom of the U-shaped receiving groove 511 and in the upward direction by the upper side walls of the two openings 521, so as to control the range of the vertical deviation of the endless belt 400 and prevent the endless belt 400 and the connecting member 500 from moving up and down relatively to each other and affecting the stability of the movement of the slider 200. The movement of the ring-shaped belt 400 in the front-back direction is limited by the distance between the first vertical plate 513 and the second vertical plate 515 and the distance between the two openings 521, in the transmission process, the ring-shaped belt 400 is pressed against the surface of the second vertical plate 515 facing the U-shaped accommodating groove 511 and the front side walls (the side walls close to the U-shaped accommodating groove 511) of the two openings 521, the region of the ring-shaped belt 400 between the two openings 521 is bent to a certain angle when passing through the U-shaped accommodating groove 511, the fastening degree of the ring-shaped belt 400 and the connecting piece 500 is increased, the friction force of the relative movement of the ring-shaped belt 400 and the connecting piece 500 is increased, and the transmission effectiveness and stability are improved.

Referring to fig. 2 or fig. 4, the left and right bending portions 520 are symmetrically disposed at two sides of the U-shaped receiving slot 511. The symmetrical arrangement is favorable for reducing the production cost of the die, and on the other hand, the entrance angle and the exit angle of the annular belt 400 are consistent when the annular belt 400 enters and exits the U-shaped accommodating groove 511, and the consistency of stress during reciprocating motion can be ensured by considering the repeated motion of the annular belt 400 and the consistency of the entrance angle and the exit angle, so that the transmission stability is improved.

In one embodiment, the connector 500 further comprises a shield (not shown) removably attached to the second riser 515, the shield covering the upper end notch 5111 of the U-shaped receiving slot 511, the shield confining the endless belt 400 within the U-shaped receiving slot 511. The setting of the blocking piece prevents the annular belt 400 from jumping the U-shaped accommodating groove 511 in the moving process, thereby affecting the moving stability of the sliding block 200 and further affecting the printing effect of the nail printing device.

Further, the shielding element is a screw, the second vertical plate 515 is provided with a screw hole 512 at the end of the notch 5111 of the U-shaped accommodating groove 511, and after the screw is installed in the screw hole 512, the nut of the screw seals the notch 5111 of the U-shaped accommodating groove 511. The screw is conventional part, and the adoption of the screw to realize the closure of the notch 5111 saves the product cost compared with the adoption of other structural designs.

Referring to fig. 1 or fig. 6, the sliding rail 300 includes a first shaft 310 and a second shaft 320, the first shaft 310 and the second shaft 320 are disposed in parallel on the same horizontal plane, and a certain distance is formed between the first shaft 310 and the second shaft 320; the sliding block 200 is arranged on the first shaft 310 and the second shaft 320 in a sliding way, the sliding block 200 extends outwards to form a supporting part 230 in a direction perpendicular to the first shaft 310 and the second shaft 320, and the ink box 100 is arranged on the supporting part 230; when the endless belt 400 rotates, the endless belt 400 drives the slider 200 to move along the first shaft 310 and the second shaft 320 through the connecting member 500.

The printing head of the nail printing device is positioned below the ink box 100, the ink box 100 is arranged on the supporting part 230, the supporting part 230 is positioned in front of the sliding rail 300 (positive direction of X axis), so that the center of gravity of the whole sliding block 200 and the ink box 100 is positioned in front of the sliding rail 300, in order to improve the moving stability, a first shaft 310 and a second shaft 320 are arranged, the first shaft 310 and the second shaft 320 are arranged in parallel on the same horizontal plane, and a certain distance is arranged between the first shaft 310 and the second shaft 320. From the force analysis, the slider 200 is subjected to vertical forces including: gravity with the slider 200 and ink cartridge 100 as a whole, the center of gravity being forward of the first axis 310; receiving the supporting force of the first shaft 310, the direction of the force is upward; the pulling force of the second shaft 320 is balanced by the moment, and the direction of the pulling force is downward. Thus, the moment created by gravity at the location of first axis 310 is balanced by the moment created by second axis 320 at the location of first axis 310. It can be seen from the calculation formula of the moment that the pulling force of the second shaft 320 can be reduced by properly extending the distance between the first shaft 310 and the second shaft 320. As can be seen from the calculation formula of the dynamic stability, the distance between the first shaft 310 and the second shaft 320 is properly lengthened, which is beneficial to improving the dynamic stability of the slider 200.

The connection member 500 is located between the first shaft 310 and the second shaft 320, and is adjacent to a side of the ink cartridge 100. The connecting member 500 is pulled leftwards or rightwards by the endless belt 400, and the connecting member 500 is used as a connecting structure of the endless belt 400 and the slider 200, and is close to the design of the ink cartridge 100, so that the position of the pulling force applied to the slider 200 is close to the gravity center of the slider 200 and the ink cartridge 100 as a whole, and the design of the pulling force close to the gravity center is beneficial to improving the moving stability of the slider 200.

Referring to fig. 2, the slider 200 is provided with a front latch 210 and a rear latch 220 on the lower surface thereof, the front latch 210 is slidably sleeved on the first shaft 310, and the rear latch 220 is slidably sleeved on the second shaft 320. The slider 200, the front buckle 210 and the rear buckle 220 are integrally designed, so that the structural space can be saved and the connection stability between the structures can be ensured. The front buckle 210 is in sliding sleeve connection with the first shaft 310, and the rear buckle 220 is in sliding sleeve connection with the second shaft 320, so that the installation is simple, and the structural connectivity is good.

Referring again to fig. 2, there are two front fasteners 210 and one rear fastener 220. Under the condition that the traction force of the connecting piece 500 and the gravity center of the ink cartridge 100 are arranged close to the first shaft 310, two front buckles 210 which are at a certain distance are arranged on the first shaft 310, which is beneficial to improving the stability of the sliding block 200 when moving back and forth.

Referring to fig. 1 or fig. 6, two ends of the bottom plate 900 are respectively bent upward to form a first sidewall 910 and a second sidewall 920, and two ends of the first shaft 310 and the second shaft 320 are respectively fixed on the first sidewall 910 and the second sidewall 920. The arrangement of the first and

second sidewalls

910 and 920 provides support for the first and

second shafts

310 and 320 and provides for the first and

second shafts

310 and 320 to be lifted a distance from the base plate 900. The fixed positions of the first and

second shafts

310, 320 on the first and

second sidewalls

910, 920 may be adjusted as desired by those skilled in the art to meet the assembly layout needs of the overall structure.

Further, the nail printing apparatus further includes a first fixing frame 930 and a second fixing frame 940, the first fixing frame 930 and the second fixing frame 940 are detachably fixed to the first sidewall 910 and the second sidewall 920, respectively, and the first fixing frame 930 and the second fixing frame 940 are respectively provided with accommodating holes (not shown) for inserting the first shaft 310 and the second shaft 320 at positions corresponding to the first shaft 310 and the second shaft 320.

In actual assembly, the first shaft 310 and the second shaft 320 respectively pass through the front catch 210 and the rear catch 220, the slider 200 is slid to the central position of the first shaft 310 and the second shaft 320, and then the first shaft 310 and the second shaft 320 are respectively inserted into the receiving holes of the first fixing frame 930 and the second fixing frame 940 to form an integral frame. Then, the whole frame is placed on the bottom plate 900, and the first side wall 910 and the second side wall 920 fix the first fixing frame 930 and the second fixing frame 940 in a clamping manner (the specific clamping structure is not limited as long as the fixed connection can be achieved), so as to complete the connection and fixation of the whole slide rail 300. The cooperation is inseparable between each structure, and the overall arrangement sets up rationally, promotes overall structure firmly. In this case, the accommodating hole may be a through hole or a blind hole.

The connection mode of the integral frame and the bottom plate 900 may be as follows: the first side wall 910 and the second side wall 920 are respectively provided with a fixing hole 950 for accommodating the first shaft 310 and the second shaft 320, and after the first shaft 310 and the second shaft 320 respectively pass through the accommodating holes of the first fixing frame 930 and the second fixing frame 940 (at this time, the accommodating holes are through holes), the end portions thereof are inserted into the fixing holes 950, so that the integral frame and the bottom plate 900 are fixedly connected.

Further, the first fixing frame 930 and the second fixing frame 940 are elastic structures, and the first fixing frame 930 and the second fixing frame 940 are provided with extending holes communicated with the accommodating holes. The extending hole is convenient to provide a space for the accommodating hole to expand and deform along the radial direction of the first shaft 310 or the second shaft 320 when the first shaft 310 or the second shaft 320 is inserted into the accommodating hole, so that the accommodating hole is prevented from being torn due to excessive tension while the first shaft 310 or the second shaft 320 is inserted.

Referring to fig. 1, the motor 600 is a dc motor for driving the endless belt 400 to rotate. The direct current motor has good starting characteristic and speed regulation characteristic, and is selected to improve the rotation controllability of the annular belt 400, so that the movement stability of the sliding block 200 is improved.

Referring to fig. 1 again, the gear set 700 includes a first gear 710 and a second gear 720 spaced apart from the first gear 710 by a certain distance, a connecting line between the first gear 710 and the second gear 720 is parallel to the slide rail 300, the endless belt 400 is sleeved on the first gear 710 and the second gear 720, a first tooth structure of the endless belt 400 is engaged with teeth of the first gear 710 and the second gear 720, the motor 600 drives the first gear 710 to rotate, and when the first gear 710 drives the endless belt 400 to rotate, the connecting member 500 reciprocates between the first gear 710 and the second gear 720.

The meshing design of the first tooth structure and the gear tooth group ensures that the annular belt 400 and the contacted gear have the same linear speed, so that the accuracy of the transmission ratio is improved, and 1:1 transmission is realized.

Referring to fig. 1, 7 and 8, the nail printing apparatus further includes a pre-tightening assembly 800, the pre-tightening assembly 800 acts on the second gear 720 to adjust the second gear 720 in the left-right direction, so as to adjust the distance between the second gear 720 and the first gear 710 to adjust the tightness of the endless belt 400 and the gear set 700, thereby ensuring proper tightness and improving the stability of transmission.

Referring to fig. 7 and 8, the bottom plate 900 is provided with a first through hole 960 at the second gear 720 for accommodating the second gear 720 to move left and right;

the preloading unit 800 includes a blocking plate 810 fixed to the base plate 900 and located at the left side of the first through hole 960, a supporting frame 820 fixed to the base plate 900 for supporting the second gear 720 and moving along the first through hole 960, and a spring 830 having one end fixed to the blocking plate 810 and the other end fixed to the supporting frame 820, wherein the second gear 720 is offset by a leftward elastic restoring force applied by the spring 830 and a leftward force applied by the endless belt 400.

In operation, the second gear 720 is fixed on the support frame 820, and the support frame 820 can move left and right along the first through hole 960. The spring 830 is compressed between the baffle 810 and the supporting frame 820, and has a rightward elastic restoring force to the supporting frame 820, and meanwhile, the supporting frame 820 is pulled leftward by the second gear 720 via the endless belt 400, and the elastic restoring force and the pulling force move the supporting frame 820 in the first through hole 960 until a force balance state is achieved. Then, the operator fixes the support frame 820 in this state on the base plate 900. Thereby completing the tightness adjustment of the endless belt 400 and the gear unit 700. It should be noted that, the operator may also manually adjust the specific position of the supporting frame 820 in the first through hole 960 to manually adjust the tightness of the endless belt 400 and the gear set 700. The operation is simple, and the practicability is strong.

Further, the pretensioning assembly 800 further comprises a limiting column 840 which is connected to the surface of the support frame 820 close to the baffle 810 at one end and extends towards the baffle 810 at the other end for limiting the radial displacement of the spring 830. Baffle 810 is seted up centrally and is held spacing post 840 male second through-hole. The retaining posts 840 prevent the springs 830 from bending radially and affecting the force applied to the support 820. The retainer posts 840 pass through the second through holes of the shield 810, ensuring that the retainer posts 840 have sufficient length to limit the radial displacement of the spring 830.

Example two

The present embodiment provides a nail print apparatus including a slider 200, an ink cartridge 100, and a slide rail 300.

Referring to fig. 1 and 6, the slider 200 is slidably disposed on the sliding rail 300, the sliding rail 300 includes a first shaft 310 and a second shaft 320, the first shaft 310 and the second shaft 320 are disposed in parallel on the same horizontal plane, and a certain distance is formed between the first shaft 310 and the second shaft 320; the sliding block 200 is arranged on the first shaft 310 and the second shaft 320 in a sliding way, the sliding block 200 extends outwards to form a supporting part 230 in a direction perpendicular to the first shaft 310 and the second shaft 320, and the ink box 100 is arranged on the supporting part 230; the ink cartridge 100 follows the slider 200 along the first axis 310 and the second axis 320.

The support 230 is positioned in front of the slide rail 300, and the ink cartridge 100 is mounted on the support 230. First beautiful printing device's printing area is located ink horn 100 below, and the whole focus of slider 200 and ink horn 100 is located the place ahead (X axle positive direction) of slide rail 300, for the stationarity that improves the removal, has set up primary shaft 310 and secondary shaft 320, and primary shaft 310 and secondary shaft 320 parallel arrangement on same horizontal plane, and the certain distance of interval between primary shaft 310 and the secondary shaft 320 carries out the atress analysis, and the slider 200 power of receiving the vertical direction includes: the gravity of the slider 200 and the ink cartridge 100 as a whole has the center of gravity in front of the first shaft 310, and is supported by the first shaft 310, and the direction of the gravity is upward, and the direction of the gravity is balanced by the moment, and the direction of the tension is downward. Thus, the moment created by gravity at the location of first axis 310 is balanced by the moment created by second axis 320 at the location of first axis 310. It can be seen from the calculation formula of the moment that the pulling force of the second shaft 320 can be reduced by properly extending the distance between the first shaft 310 and the second shaft 320. As can be seen from the calculation formula of the dynamic stability, the distance between the first shaft 310 and the second shaft 320 is properly lengthened, which is beneficial to improving the dynamic stability of the slider 200.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a first beautiful printing device, includes slider, ink horn and slide rail, the ink horn is fixed on the slider, the slider slide set up in on the slide rail, the ink horn is followed the slider is followed the slide rail removes, its characterized in that includes:

2. The nail printing device of claim 1, wherein the hook portion comprises a first vertical plate, a connecting plate and a second vertical plate, the first vertical plate, the connecting plate and the second vertical plate are sequentially connected to form a U-shaped accommodating groove for accommodating the annular belt, one end of the first vertical plate, which is far away from the connecting plate, is connected to the lower surface of the slider, a gap for the annular belt to enter the accommodating groove is formed between the second vertical plate and the lower surface of the slider, and the second tooth structure is arranged on the inner side surface of the second vertical plate.

3. The nail printing apparatus of claim 2, wherein the connecting member further includes two bending portions, the two bending portions are symmetrically disposed on the left and right sides of the hook portion and extend toward the side where the second vertical plate is located, a distance from an end portion of the bending portion to the first vertical plate is greater than a distance from the second vertical plate to the first vertical plate, the annular belt is clamped in the accommodating groove, and when the annular belt is under a tensioned state, the annular belt abuts against end portions of the two bending portions, respectively.

4. The nail printing apparatus according to claim 2, wherein the connecting member further comprises two bending portions, the two bending portions are symmetrically disposed on the left and right sides of the hook portion and extend to the side of the second vertical plate, the two bending portions are respectively provided with openings, and the annular belt is clamped in the accommodating groove and the two openings;

5. The nail printing apparatus of claim 3 or 4, wherein the connector further comprises a shielding member detachably connected to the second vertical plate, the shielding member shielding an upper end notch of the U-shaped receiving groove, the shielding member restricting the endless belt in the receiving groove.

6. The nail printing apparatus of claim 5, wherein the shielding member is a screw, a screw hole is formed in the second vertical plate at the end of the slot of the receiving groove, and after the screw is mounted in the screw hole, a nut of the screw closes the slot of the receiving groove.

7. The nail printing apparatus according to any one of claims 1 to 4, wherein the slide rail includes a first shaft and a second shaft, the first shaft and the second shaft being disposed in parallel on the same horizontal plane with a distance therebetween; the sliding block is arranged on the first shaft and the second shaft in a sliding mode, a supporting part extends outwards from the sliding block in a direction perpendicular to the first shaft and the second shaft, and the ink box is mounted on the supporting part;

8. The nail printing apparatus of claim 7, wherein the connector is located between the first shaft and the second shaft and adjacent to a side of the cartridge.

9. The nail printing apparatus of claim 7, wherein the slider has a front latch and a rear latch on a lower surface thereof, the front latch being slidably received on the first shaft, the rear latch being slidably received on the second shaft.

10. The nail printing apparatus of claim 7, further comprising a bottom plate, wherein two ends of the bottom plate are bent upward to form a first side wall and a second side wall, and two ends of the first shaft and the second shaft are fixed to the first side wall and the second side wall, respectively.

11. The nail printing apparatus of claim 10, further comprising a first fixing frame and a second fixing frame, wherein the first fixing frame and the second fixing frame are respectively fixed on the first sidewall and the second sidewall, and the first fixing frame and the second fixing frame are respectively provided with accommodating holes for the first shaft and the second shaft to be inserted into.

12. The nail printing apparatus of any one of claims 1 to 4, further comprising a DC motor for driving the endless belt in rotation.

13. The nail printing apparatus of claim 12, further comprising a gear set, wherein the gear set includes a first gear and a second gear spaced apart from the first gear, a connecting line between the first gear and the second gear is parallel to the slide rail, the annular belt is sleeved on the first gear and the second gear, a first tooth structure of the annular belt is engaged with teeth of the first gear and the second gear, the dc motor drives the first gear to rotate, and when the first gear drives the annular belt to rotate, the connecting member reciprocates between the first gear and the second gear.