Flattening structure of heat transfer printing machine

Abstract

The utility model discloses a flattening structure of a heat transfer printing machine, and relates to the technical field of textile equipment. According to the technical scheme, the printing machine is characterized by comprising a printing machine body, a support is arranged above the printing machine body, a supporting rod is slidably connected to the support, an unfolding device is arranged at the bottom end of the supporting rod and comprises a plurality of expansion rods, the top ends of the expansion rods are rotationally connected to the supporting rod, and the other ends of the expansion rods are rotationally connected with a plurality of rolling wheels; when the supporting rod moves downwards, the unfolding area of the rollers is increased, the supporting rod is driven by the electric cylinder to move, and the downward sliding speed of the piston of the electric cylinder is one third of the upward sliding speed. The fabric flattening device can conduct flattening operation before fabric printing, it is guaranteed that the fabric entering the printing link is flat, and the printing efficiency and the printing quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile equipment technical field more specifically, it relates to a kind of flat structure of heat transfer printing machine. BACKGROUND

[0002] Transfer printing machine is a kind of mechanical equipment for carrying out pattern printing on textile, leather, plastic and other materials, which transfers the pre-designed pattern from paper, film and other carriers to target materials by heat transfer or pressure transfer, to realize personalized decorative effect.

[0003] When transfer printing machine works, part of the fabric completed printing needs to be cut, so some transfer printing machines have cutting devices. Generally speaking, the fabric on the printing machine body should be flat, but this is affected by many factors. In the printing process, the tension control of the fabric is crucial. Proper tension can ensure that the fabric remains flat during transmission and cutting, avoiding wrinkles or deformation caused by uneven or excessive or insufficient tension. However, after the printing machine is used for a long time, the tension control device will also age and become less sensitive. If not maintained and replaced in time, the fabric may not be flat and have wrinkles, leading to uneven printing.

[0004] Therefore, a new solution is needed to solve this problem. INVENTION CONTENTS

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a flat structure of heat transfer printing machine, which solves the problem of wrinkles and accumulation on the fabric on the printing machine body when the tension control system ages and becomes less sensitive.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a printing machine body is provided, a support is arranged above the printing machine body, a support rod is slidably connected to the support, an unfolding device is arranged at the bottom end of the support rod, the unfolding device includes a plurality of expansion rods, the top end of each expansion rod is rotatably connected to the support rod, and a plurality of rollers are rotatably connected to the other end of each expansion rod. When the support rod moves downward, the expansion area of the rollers increases, the support rod is driven to move by an electric cylinder, and the downward sliding speed of the piston of the electric cylinder is one-third of the upward sliding speed.

[0007] The utility model is further provided as follows: a circular ring one and a circular ring two are fixedly connected to the outer peripheral wall of the support rod from top to bottom, one end of each expansion rod is rotatably connected to the circular ring one, and the other end of each expansion rod is connected to the circular ring two through a rotating rod.

[0008] The utility model is further provided as follows: the length of the rotating rod is equal to the length from the circular ring two to the bottom surface of the roller.

[0009] The utility model further sets up: the bottom fixedly connected with the expansion ring of expansion rod, the gyro wheel rotation is connected on the expansion ring, the cross section shape of expansion ring is isosceles trapezoidal.

[0010] The utility model further sets up: fixedly connected with the sliding ring on the support, the support rod slidingly connects in the sliding ring.

[0011] The utility model further sets up: the maximum unfolding width of the unfolding device is greater than the half of the width of the printing machine body.

[0012] In summary, the utility model has following beneficial effects: set up the electric cylinder and drive the support rod to slide down, the support rod slides down and drives the unfolding of the unfolding device, when the unfolding device contacts the fabric, unfolds and has not completed, has the action of the surface of the fabric from the center of circle to the circumference expansion, controls the electric cylinder through the control system, when the unfolding device unfolds, the electric cylinder drives the support rod to displace upward, leaves the surface of the fabric, so reciprocating, realizes the automatic wrinkle removal of the fabric. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model;

[0014] Figure 2 It is the structural schematic diagram of the unfolding device in the utility model.

[0015] In the drawing: 1, printing machine body;2, support;3, support rod;4, expansion rod;5, gyro wheel;6, ring one;7, ring two;8, expansion ring;9, sliding ring;10, rotation rod. DETAILED DESCRIPTION

[0016] The utility model is described in detail below in combination with the drawings and examples.

[0017] A kind of unfolding structure of heat transfer printing machine, such as Figure 1 And Figure 2As shown, including the printing machine body 1, the upper of printing machine body 1 is provided with support 2, support 2 is connected with support rod 3 slidingly, through the support of support 2, support rod 3 and the unfolding device on support rod 3 are fixed on printing machine body 1, the bottom end of support rod 3 is provided with unfolding device, unfolding device includes several expansion rods 4, the top end of expansion rod 4 is rotatably connected on support rod 3, the other end of expansion rod 4 is rotatably connected with several rollers 5, when support rod 3 moves down, the expansion area of several rollers 5 increases, support rod 3 is driven to displace by electric cylinder, electric cylinder is controlled by program, the piston of electric cylinder pushes support rod 3 to displace downward, the bottom end of unfolding device on support rod 3 contacts the fabric, because the fabric will be taut in the printing process, the pressure that the fabric can bear is also relatively large at this time, although it is in taut state, but there will be wrinkles and the wrinkles generated in taut state need to be smoothed by external force, unfolding device still continuously displaces and deforms under the pushing of electric cylinder after contacting the fabric, the resultant force of the pressure after expansion expands the top end of rod 4 to rotate around support rod 3, then the bottom end of expansion rod 4 drives roller 5 to expand and slide outward along the fabric, so as to smooth the wrinkles on the fabric, achieve the purpose of flattening, ensure the quality of subsequent printing.

[0018] As shown in Figure 2 , the downward sliding speed of the piston of electric cylinder is one third of the upward sliding speed, the sliding speed of the piston of electric cylinder is set in advance when setting the control program, the downward sliding speed is slower, so that roller 5 can slowly slide and adhere to the surface of the fabric, smooth the wrinkles generated on the fabric, and the upward sliding speed is fast, reducing the contact area of roller 5 with the fabric after the fabric is smoothed, roller 5 quickly separates from the contact with the fabric, avoiding that the slow folding of roller 5 causes the fabric to appear wrinkles again.

[0019] As shown in Figure 1 and Figure 2 , the outer peripheral wall of support rod 3 is fixedly connected with circular ring one 6 and circular ring two 7 from top to bottom, one end of several expansion rods 4 is rotatably connected on circular ring one 6, the other end of several expansion rods 4 is connected on circular ring two 7 through rotating rod 10, the length of rotating rod 10 is equal to the length from circular ring two 7 to the bottom surface of roller 5, the bottom end of expansion rod 4 is fixedly connected with unfolding ring 8, roller 5 is rotatably connected on unfolding ring 8, the cross-sectional shape of unfolding ring 8 is isosceles trapezoidal, sliding ring 9 is fixedly connected on support 2, support rod 3 is slidingly connected in sliding ring 9, the maximum unfolding width of unfolding device is greater than one half of the width of printing machine body 1.

[0020] As shown in Figure 1 and Figure 2As shown, one end of the expansion rod 4 is sleeved on the ring 6, and the other end of the expansion rod 4 is rotatably connected with the unfolding ring 8. The cross section of the unfolding ring 8 is trapezoidal, the expansion rod 4 is sleeved on the short side of the trapezoidal horizontal direction, and when the trapezoidal unfolding ring 8 is in a vertical state, the short side of the trapezoidal horizontal direction is above the long side of the horizontal direction. Therefore, the trapezoidal unfolding ring 8 can rotate around its short side, and the trapezoidal unfolding ring 8 as a whole changes from a vertical state to a horizontal state. At this time, the long side of the trapezoidal unfolding ring 8 is outward, and the contact range with the fabric can be expanded during the movement, so the range of wrinkle removal is wider. The position close to the short side of the trapezoidal unfolding ring 8 is fixedly connected with the rotating rod 10, and the other end of the rotating rod 10 is sleeved on the ring 7. When the support rod 3 is driven downward by the electric cylinder, the support rod 3 drives the ring 7 to move downward, and the angle between the rotating rod 10 and the ring 7 becomes larger, thereby driving the unfolding ring 8 to unfold outward. The unfolding ring 8 contacts the surface of the fabric, applies pressure to the fabric, and removes wrinkles. The arrangement of the expansion rod 4 can effectively disperse the relative force of the fabric on the unfolding ring 8, so that the overall structure is more stable and has higher pressure resistance.

[0021] As shown in Figure 1 and Figure 2 , the long side of the unfolding ring 8 is sleeved with a roller 5, and the cross section of the roller 5 is rectangular. Compared with the ordinary rod-shaped object, the roller 5 can make the frictional force of the unfolding ring 8 facing the fabric smaller, thereby facilitating the unfolding, preventing the unfolding ring 8 from being damaged due to excessive pressure, and enabling the range of wrinkle removal to be wider. At the same time, the above device and the electric cylinder are arranged at the transverse center position of the printing machine body 1. When the electric cylinder moves, the wrinkles are pushed to the edge of the fabric while the range of wrinkle removal is diffused outward. The arrangement of the center position can make the wrinkle removal more uniform and prevent the wrinkles from being transferred to other places of the fabric.

[0022] Working principle: after starting, the fabric enters the printing machine body 1 and is conveyed on the printing machine body 1. At this time, the electric cylinder on the support 2 is controlled by the control system, so that when the electric cylinder drives the support rod 3 to descend to contact the fabric, the unfolding ring 8 has not been unfolded. The angle of the unfolding ring 8 contacting the fabric can be set. The support rod 3 descends, the unfolding ring 8 contacts the fabric, at this time the unfolding ring 8 rotates with the expansion rod 4, the angle between the rotating rod 10 and the support rod 3 becomes larger, the ring 7 moves downward, the roller 5 rotates, and the unfolding ring 8 expands outward in a circular motion. The electric cylinder drives the support rod 3 to rise, and the overall structure also rises. The unfolding ring 8 leaves the surface of the fabric.

[0023] The above merely is preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above examples, and belongs to the technical scheme under the idea of the present application all belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A spreading structure of a heat transfer printing machine, comprising a printing machine body (1), characterized in that: The upper part of the printing machine body (1) is provided with a support (2), the support (2) is slidably connected with a support rod (3), the bottom end of the support rod (3) is provided with an unfolding device, the unfolding device comprises a plurality of expansion rods (4), the top end of the expansion rod (4) is rotatably connected with the support rod (3), the other end of the expansion rod (4) is rotatably connected with a plurality of rollers (5), when the support rod (3) moves downward, the expansion area of the plurality of rollers (5) increases, the support rod (3) is driven to displace by an electric cylinder, the downward sliding speed of the piston of the electric cylinder is one third of the upward sliding speed.

2. A flattening structure of a heat transfer printing machine according to claim 1, characterized in that: The outer peripheral wall of the support rod (3) is fixedly connected with a ring one (6) and a ring two (7) from top to bottom, one end of the plurality of expansion rods (4) is rotatably connected with the ring one (6), the other end of the plurality of expansion rods (4) is connected with the ring two (7) through a rotating rod (10).

3. A flattening structure of a heat transfer printing machine according to claim 2, characterized in that: The length of the rotating rod (10) is equal to the length from the ring two (7) to the bottom surface of the roller (5).

4. The flattening structure of a heat transfer printing machine according to claim 1, characterized in that: The bottom end of the expansion rod (4) is fixedly connected with an unfolding ring (8), the roller (5) is rotatably connected with the unfolding ring (8), the cross-sectional shape of the unfolding ring (8) is isosceles trapezoidal.

5. The flattening structure of a heat transfer printing machine according to claim 1, characterized in that: The support (2) is fixedly connected with a sliding ring (9), the support rod (3) is slidably connected in the sliding ring (9).

6. The flattening structure of a heat transfer printing machine according to claim 1, characterized in that: The maximum unfolding width of the unfolding device is greater than one half of the width of the printing machine body (1).

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