Intermittent thermal transfer printer

Abstract

The utility model discloses an intermittent thermal transfer printer, relates to the technical field of thermal transfer printing, and provides the following scheme aiming at the problems that the volume is increased and the cost is increased due to the fact that a speed reducer needs to be additionally arranged in the conventional gear rack transmission or belt transmission, the intermittent thermal transfer printer comprises a bottom plate, and the upper side and the lower side of the outer end of the bottom plate are connected with feeding mechanisms; one side of the sliding block is connected with a transmission mechanism, the transmission mechanism comprises a first cam and a second cam, the first cam is used for driving the first sliding plate to reciprocate along the Y axis, the outer side of the second cam is connected with a connecting rod through a swing rod, and the second cam is used for driving the adapter plate to reciprocate along the X axis; through a linkage mechanism of the double-cam structure, the follow-up device, the swing rod and the connecting rod, a traditional multi-stage gear reduction box or a complex belt transmission system is replaced, the structure is simple, the design is ingenious, complex actions are achieved through rotation of the motor, the production and machining cost is reduced, and the number of accessories is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat transfer printing technical field especially relates to an intermittent heat transfer printing machine. BACKGROUND

[0002] The transmission system of the existing heat transfer printer generally has problems such as complex structure, numerous parts and difficult assembly and debugging, for example, the traditional gear and rack transmission or belt transmission needs to additionally increase a speed reducer, leading to volume increase and cost increase, and the multi-stage transmission is easy to produce cumulative error, influencing printing precision. UTILITARY MODEL CONTENTS

[0003] The utility model provides an intermittent heat transfer printing machine, solves the existing problem.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: an intermittent heat transfer printing machine, including bottom plate and print head, the inside of bottom plate is opened with guide groove, and the inside of guide groove is installed with linear slide rail arranged in longitudinal direction, and print transmission mechanism is installed on linear slide rail through sliding block, the print transmission mechanism includes double cam and first slide plate, the double cam is installed above guide groove, and the first slide plate is slidably installed in the inside of guide groove through linear slide rail and sliding block, the outside of first slide plate is horizontally slidably connected with adapter plate through another linear slide rail, and the side of adapter plate is contacted with double cam through connecting rod and swing lever, the top of first slide plate is contacted with double cam through servo, and the first slide plate is pressed down through the rotation of double cam, simultaneously drives connecting rod and swing lever to push adapter plate to horizontally slide.

[0005] Preferably, the double cam includes a first cam and a second cam, and the first cam and the second cam are an integrated linkage structure connected with the output shaft of the motor, the first cam is in contact with the servo, and the second cam is in contact with the swing lever.

[0006] Preferably, the middle part of the swing lever is rotatably connected with the bottom plate through a fulcrum rod, the bottom end of the swing lever is connected with a movable connecting rod, and the other end of the movable connecting rod is connected with the adapter plate.

[0007] Preferably, two first tension springs are symmetrically arranged above the first slide plate, and the upper end of the first tension spring is fixedly connected with the bottom plate.

[0008] Preferably, the side of the swing lever close to the second cam is connected with the bottom plate through a second tension spring, forming a rebound structure.

[0009] Preferably, the adapter plate is provided with a flange plate on one side, a bracket is connected below the flange plate, and the print head is installed below the bracket.

[0010] Preferably, two limiting rollers are connected to the both sides of the upper end of the bottom plate respectively, and a baffle is connected to the both ends of the middle part of the bottom plate and the middle part above the bottom plate.

[0011] Preferably, a feeding mechanism for winding the color band is arranged on the outside of the bottom plate, the feeding mechanism comprises two reels, the two reels are connected to the upper end of one side of the bottom plate respectively, color band unwinding guide rollers are connected to the both ends below the one side of the bottom plate, color band winding guide rollers are arranged at intervals on the upper end of the color band unwinding guide rollers, and a Hall element is connected to one end of the color band unwinding guide rollers.

[0012] The beneficial effects of the present application are as follows: through the double-cam structure of the first cam and the second cam, the linkage mechanism of the follower, the swing rod and the connecting rod, the printing head realizes the reciprocating motion of down-left-up-right, and the printing function is realized, and the traditional multi-stage gear reduction box or the complex belt transmission system is replaced, the printing transmission mechanism has simple structure and ingenious design, complex actions are realized through motor rotation, the transmission structure is greatly simplified, the production and processing cost is reduced, and the number of parts is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The figure is a structural schematic view of the present application.

[0014] Figure 2 The figure is a transmission mechanism schematic view of the present application.

[0015] In the figure, 1 is a bottom plate, 101 is a guide groove, 102 is a limiting roller, 103 is a baffle, 2 is a feeding mechanism, 201 is a reel, 202 is a color band unwinding guide roller, 203 is a color band winding guide roller, 204 is a Hall element, 3 is a linear slide rail, 4 is a sliding block, 5 is a transmission mechanism, 501 is a first cam, 502 is a second cam, 503 is a follower, 504 is a first sliding plate, 505 is a swing rod, 506 is a connecting rod, 507 is an adapter plate, 508 is a motor, 509 is a fulcrum rod, 510 is a folding plate, 511 is a first tension spring, 512 is a second tension spring, 6 is a printing head, and 601 is a bracket. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0017] Reference Figures 1-2The utility model provides a technical scheme: an intermittent thermal transfer printer, including bottom plate 1 and print head 6, the inside of bottom plate 1 is provided with guide slot 101, and the inside installation of guide slot 101 is longitudinally arranged linear slide rail 3, and print drive mechanism 5 is installed on linear slide rail 3 through sliding block 4, and print drive mechanism 5 includes double cam and first slide plate 504, and double cam is installed on the top of guide slot 101, and first slide plate 504 is slidably installed in the inside of guide slot 101 through linear slide rail 3 and sliding block 4, and the outside of first slide plate 504 is horizontally slidably connected with adapter plate 507 through another linear slide rail, and adapter plate 507 side is contacted with double cam through connecting rod 506 and swing bar 505, and the top of first slide plate 504 is contacted with double cam through follower 503, and first slide plate 504 is pressed down through the rotation of double cam, simultaneously drives connecting rod 506 and swing bar 505 to push adapter plate 507 to slide horizontally, and the synchronous rotation of double cam in print drive mechanism 5 drives first slide plate 504 to realize the longitudinal reciprocating movement of Y axis direction, and simultaneously drives adapter plate 507 to realize the horizontal movement of X direction, and drives print head 6 to realize the circular motion.

[0018] Double cam includes first cam 501 and second cam 502, and first cam 501 and second cam 502 are integrated linkage structure, are connected with the output shaft of motor 508, first cam 501 is contacted with follower 503, and second cam 502 is contacted with swing bar 505, and the middle part of swing bar 505 is rotatably connected with bottom plate 1 through fulcrum rod 509, and the bottom end of swing bar 505 is connected with movable connecting rod 506, and the other end of movable connecting rod 506 is connected with adapter plate 507, and the top of first slide plate 504 is provided with two symmetrical first tension springs 511, and the upper end of first tension spring 511 is fixedly connected with bottom plate 1, and the side of swing bar 505 close to second cam 502 is connected with bottom plate 1 through second tension spring 512, and constitutes rebound structure, and the side of adapter plate 507 is provided with flange plate 510, and the below of flange plate 510 is connected with bracket 601, and print head 6 is installed on the below of bracket 601.

[0019] When being implemented, first cam 501 and second cam 502 are rotated around the same axis by starting motor 508, when the motor rotates clockwise, first cam 501 pushes follower 503, simultaneously, follower 503 pushes first slide plate 504 to move downward along Y axis, swing bar 505 is rotated by second cam 502, swing bar 505 is connected with adapter plate 507 through connecting rod 506 on the other side, swing bar 505 makes periodic swing around fulcrum rod 509, connecting rod 506 pushes adapter plate 507 to move along X axis, one end of adapter plate 507 is connected with flange plate 510, print head 6 is fixed by flange plate 510 and bracket 601, so that it completes the reciprocating circular path of "down→left→up→right", thereby completing intermittent printing function.

[0020] Refer to Figure 1The bottom plate 1 is provided with two limiting rollers 102 at the upper ends of both sides, and is provided with a baffle 103 at the upper middle part and both ends of the middle part, and is provided with a feeding mechanism 2 outside the bottom plate 1 for winding the color band, the feeding mechanism 2 comprises two reels 201, and the two reels 201 are connected to the upper ends of one side of the bottom plate 1, and the bottom plate 1 is provided with a color band unwinding guide roller 202 at the lower ends of one side, and the color band unwinding guide roller 202 is provided with a color band winding guide roller 203 at the upper end, and the color band unwinding guide roller 202 is provided with a Hall element 204 at one end.

[0021] In specific implementation, the personnel winds the color band to the two reels 201 respectively or directly installs the color band reel / disk on the color band shaft, the two reels 201 cooperate with each other to release and wind the color band respectively, the middle part of the color band passes through the color band unwinding guide roller 202 and the color band winding guide roller 203, the unused color band reel is wound to one reel 201 and is pulled to pass through the color band unwinding guide roller 202 and the color band winding guide roller 203 in S shape downward, passes through the lower part of the print head 6, passes through the color band unwinding guide roller 202 and the color band winding guide roller 203 in S shape again on the other side, and is wound to the other reel 201, when printing, the two reels 201 start to rotate at the same time, the two reels 201 cooperate with each other to rotate to release the color band, and the length and time of the color band release are monitored in real time by the Hall element 204 on one side.

[0022] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An intermittent thermal transfer printer comprising a platen (1) and a printhead (6), characterised in that, The inside of the bottom plate (1) is provided with a guide groove (101), and a linear slide rail (3) arranged longitudinally is installed inside the guide groove (101), a printing transmission mechanism (5) is installed on the linear slide rail (3) through a sliding block (4), the printing transmission mechanism (5) comprises a double cam and a first sliding plate (504), the double cam is installed above the guide groove (101), the first sliding plate (504) is slidably installed inside the guide groove (101) through the linear slide rail (3) and the sliding block (4), the outer side of the first sliding plate (504) is horizontally slidably connected with an adapter plate (507) through another linear slide rail, one side of the adapter plate (507) is in contact with the double cam through a connecting rod (506) and a swing rod (505), the upper side of the first sliding plate (504) is in contact with the double cam through a follower (503), the double cam is rotated to press down the first sliding plate (504), at the same time, the connecting rod (506) and the swing rod (505) are driven to horizontally slide the adapter plate (507).

2. An intermittent heat transfer printer according to claim 1, wherein The double cam comprises a first cam (501) and a second cam (502), the first cam (501) and the second cam (502) are integrated and connected with the output shaft of a motor (508), the first cam (501) is in contact with the follower (503), and the second cam (502) is in contact with the swing rod (505).

3. An intermittent heat transfer printer according to claim 1, wherein The middle part of the swing rod (505) is rotatably connected with the bottom plate (1) through a fulcrum rod (509), the bottom end of the swing rod (505) is connected with the movable connecting rod (506), and the other end of the movable connecting rod (506) is connected with the adapter plate (507).

4. An intermittent heat transfer printer according to claim 1, wherein Two first tension springs (511) symmetrically arranged above the first sliding plate (504) are fixedly connected with the bottom plate (1) at the upper ends.

5. An intermittent heat transfer printer according to claim 1, wherein The side of the swing rod (505) close to the second cam (502) is connected with the bottom plate (1) through a second tension spring (512), forming a rebound structure.

6. An intermittent heat transfer printer according to claim 1, wherein The adapter plate (507) is provided with a folding plate (510) on one side, a bracket (601) is connected below the folding plate (510), and a printing head (6) is installed below the bracket (601).

7. An intermittent heat transfer printer according to claim 1, wherein Two limiting rollers (102) are connected to the upper sides of the bottom plate (1), and baffle plates (103) are connected to the middle parts of the bottom plate (1) at both ends and above.

8. An intermittent heat transfer printer according to claim 1, wherein A feeding mechanism (2) for winding color bands is arranged on the outer side of the bottom plate (1), the feeding mechanism (2) comprises two reel discs (201), the two reel discs (201) are connected to the upper ends of one side of the bottom plate (1), color band unwinding guide rollers (202) are connected to the lower ends of one side of the bottom plate (1), color band winding guide rollers (203) are arranged at intervals above the color band unwinding guide rollers (202), and a Hall element (204) is connected to one end of the color band unwinding guide rollers (202).

Images