Pre-tightening mechanism of double-end labeling machine

Abstract

The utility model belongs to the technical field of double-end labeling machines, and particularly relates to a pre-tightening mechanism of a double-end labeling machine, which comprises a bottom plate, a conveying belt and a bottle label, the conveying belt is arranged on the upper surface of the bottom plate, a bottle body is placed on the upper surface of the conveying belt, and the bottle label wraps the outer wall of the bottle body. An adjusting mechanism capable of adjusting the gap is arranged on the upper surface of the bottom plate, the adjusting mechanism comprises a sliding block, and a preheating mechanism capable of preheating the outer surface of the bottle body is installed above the sliding block; by arranging the preheating mechanisms, bottle bodies can be moved to the positions among the four heating rollers under the cooperative use of the two preheating mechanisms and the conveying belt, then the outer walls of the labeled bottles are rotationally preheated and pressed through rotation driven by the first motor, and then the lower ends of the labeled bottles are fixed to a certain degree; furthermore, bottle label sleeving displacement is not easy to cause in the subsequent moving process, so that the subsequent thermal shrinkage processing quality of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double - head label applicators, in particular to a pre - tightening mechanism of a double - head label applicator. Background Technique

[0002] At present, a label applicator is a device used to put labels on containers, which is widely used in the packaging production lines of industries such as food, beverage, medicine, and cosmetics. A double - head label applicator has two label heads, which can improve production efficiency on the packaging production line. It has the characteristics of high precision, wide application range, and simple operation. Its working principle is similar to that of an ordinary label applicator, that is, it unfolds the label roll, cuts the label, and then puts it on the container and shrinks it thermally to fit.

[0003] Chinese Patent (the authorization announcement number is: CN217196924U, and the authorization announcement date is: August 16, 2022) proposed a product pre - tightening mechanism of a double - head label applicator. This patent uses the limiting roller in the limiting mechanism to press against the outer surface of the product, and uses a spring to push the limiting roller to move in the direction of the down - conveyor line. In this way, the outer - surface labeling of the product can be pre - tightened by the limiting roller, improving the thermal - shrinkage efficiency and quality of the subsequent product, saving energy consumption, reducing costs, and at the same time not affecting the normal transportation of the product.

[0004] However, the existing pre - warning mechanism of the double - head label applicator has the following problems:

[0005] 1. Before processing the label by heat - shrinking, since the label is only put on the outer wall of the container and not fixed to the container surface, it is easy to have the problem of label offset during the process of moving and transporting, which will affect the appearance of the product after the label shrinks.

[0006] 2. The applicability of the pre - tightening mechanism of the double - head label applicator in the above - mentioned existing patent is relatively weak, and its processing gap cannot be applied to products with different outer diameters. Summary of the Utility Model

[0007] Aiming at the deficiencies of the existing technology, the utility model provides a pre - tightening mechanism of a double - head label applicator, which solves the problems in the background.

[0008] To achieve the above - mentioned purpose, the utility model is realized through the following technical solutions:

[0009] A pre - tightening mechanism of a double - head label applicator includes a bottom plate, a conveyor belt, and a bottle label. The conveyor belt is arranged on the upper surface of the bottom plate, the bottle body is placed on the upper surface of the conveyor belt, and the bottle label wraps around the outer wall of the bottle body. An adjusting mechanism for adjusting the gap is arranged on the upper surface of the bottom plate. The adjusting mechanism includes a slider, and a pre - heating mechanism for pre - heating the outer surface of the bottle body is installed above the slider.

[0010] Preferably, the preheating mechanism includes a fixed disk, a coupling, a fixed arm, a bearing block, a heating roller, a first belt, a first motor, a pulley, a second belt, a second motor, and a fixed frame. The second motor is fixedly connected to the inner wall of the slider, and the fixed frame is fixedly connected to the upper surface of the slider. The output end of the second motor is rotatably connected to the inner wall of the fixed frame, and the output end of the second motor is connected to the fixed disk through a coupling. A plurality of mounting holes are formed in the outer wall of the fixed disk, the fixed arm is fixedly connected to the inner wall of the mounting hole, the bearing block is fixedly connected to the outer wall of the fixed arm, and the heating roller is rotatably connected between the bearing blocks through bearings.

[0011] Preferably, belt mounting wheels are provided at the upper and lower ends of the heating roller, the first belt is mounted between the belt mounting wheels, the first motor is fixedly connected to the upper inner wall of the fixed disk, and the pulley is fixedly connected to the output end of the first motor.

[0012] Preferably, another belt mounting wheel is provided at the upper end of one of the heating rollers, and the second belt is mounted between the another belt mounting wheel and the pulley.

[0013] Preferably, the adjusting mechanism further includes a base, a bidirectional screw, a guide rod, and a handwheel. The base is fixedly connected to the upper surface of the bottom plate, the bidirectional screw is rotatably connected to the inner wall of the base through a bearing, and the guide rod is fixedly connected to the inner wall of the base.

[0014] Preferably, the slider is threadedly connected to the outer wall of the bidirectional screw, the slider is slidably connected to the outer wall of the guide rod, and the handwheel is fixedly connected to one end of the bidirectional screw.

[0015] Preferably, a heating wire is provided inside the heating roller, and an anti-slip pad is wrapped around the outer wall of the heating roller. The anti-slip pad is made of synthetic rubber material.

[0016] Beneficial effects

[0017] The present utility model provides a pre-tightening mechanism for a double-head labeler. Compared with the prior art, the following beneficial effects are achieved:

[0018] 1. For the pre-tightening mechanism of the double-head labeler, by setting the preheating mechanism, the bottle body can be moved between the four heating rollers in cooperation with the conveyor belt. Subsequently, the outer wall of the bottle label is rotated and preheated and pressed by the rotation driven by the first motor, thereby fixing the lower end of the bottle label to a certain extent. Therefore, the bottle label is not easily displaced during the subsequent movement, thereby improving the quality of the subsequent heat shrinkage processing of the product. This structure is simple and convenient to install.

[0019] 2. The pre-tightening mechanism of this double-head labeling machine can conveniently manually control the gap between the two pre-heating mechanisms by setting the adjustment mechanism, thereby facilitating the application of this structure to different container products and improving the applicability and adjustability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 is a top view of the present invention;

[0022] Figure 3 is a side view of the present invention;

[0023] Figure 4 is a partial structural schematic diagram on one side of the heating roller in the present invention;

[0024] Figure 5 is a partial structural schematic diagram on one side of the first motor in the present invention;

[0025] Figure 6 is a partial schematic diagram on one side of the adjustment mechanism in the present invention;

[0026] Figure 7 is a cross-sectional structural schematic diagram on one side of the bearing seat in the present invention.

[0027] In the figure: 1, bottom plate; 2, conveyor belt; 3, bottle labeling; 4, bottle body; 5, adjustment mechanism; 6, pre-heating mechanism; 51, base; 52, bidirectional screw; 53, guide rod; 54, handwheel; 55, slider; 61, fixed disk; 62, coupling; 63, fixed arm; 64, bearing seat; 65, heating roller; 66, first belt; 67, first motor; 68, pulley; 69, second belt; 610, second motor; 611, fixed frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-7, the present utility model provides a technical solution: a pre-tightening mechanism of a double-head labeler, including a bottom plate 1, a conveyor belt 2, and a bottle label 3. The conveyor belt 2 is arranged on the upper surface of the bottom plate 1. The bottle body 4 is placed on the upper surface of the conveyor belt 2. The bottle label 3 wraps around the outer wall of the bottle body 4. An adjusting mechanism 5 with adjustable clearance is arranged on the upper surface of the bottom plate 1. The adjusting mechanism 5 includes a slider 55. Above the slider 55, a pre-heating mechanism 6 for pre-heating the outer surface of the bottle body 4 is installed. The pre-heating mechanism 6 includes a fixed disk 61, a coupling 62, a fixed arm 63, a bearing seat 64, a heating roller 65, a first belt 66, a first motor 67, a pulley 68, a second belt 69, a second motor 610, and a fixed frame 611. The second motor 610 is fixedly connected to the inner wall of the slider 55. The fixed frame 611 is fixedly connected to the upper surface of the slider 55. The output end of the second motor 610 is rotatably connected to the inner wall of the fixed frame 611. The output end of the second motor 610 and the fixed disk 61 are connected by a coupling 62. A plurality of mounting holes are provided on the outer wall of the fixed disk 61. The fixed arm 63 is fixedly connected to the inner wall of the mounting hole. The bearing seat 64 is fixedly connected to the outer wall of the fixed arm 63. The heating roller 65 is rotatably connected between the bearing seats 64 through bearings. Belt mounting wheels are arranged at the upper and lower ends of the heating roller 65. The first belt 66 is installed between the belt mounting wheels. The first motor 67 is fixedly connected to the upper inner wall of the fixed disk 61. The pulley 68 is fixedly connected to the output end of the first motor 67. Another belt mounting wheel is arranged at the upper end of one of the heating rollers 65. The second belt 69 is installed between the other belt mounting wheel and the pulley 68. Six heating rollers 65 are in a group. By providing the first belt 66 and the second belt 69, it is convenient to drive a group of heating rollers 65 to rotate synchronously by the first motor 67, and another first motor 67 drives another group of heating rollers 65 to rotate in the opposite direction, improving the processing efficiency.

[0030] The adjusting mechanism 5 further includes a base 51, a bidirectional screw 52, a guide rod 53, and a handwheel 54. The base 51 is fixedly connected to the upper surface of the bottom plate 1. The bidirectional screw 52 is rotatably connected to the inner wall of the base 51 through a bearing. The guide rod 53 is fixedly connected to the inner wall of the base 51. The slider 55 is threadedly connected to the outer wall of the bidirectional screw 52. The slider 55 is slidably connected to the outer wall of the guide rod 53. The handwheel 54 is fixedly connected to one end of the bidirectional screw 52.

[0031] The interior of the heating roller 65 is provided with heating wires, and the outer wall of the heating roller 65 is wrapped with an anti-slip pad. The anti-slip pad is made of synthetic rubber, and a temperature control device is arranged on the inner wall of the heating roller 65. The synthetic rubber can be styrene-butadiene rubber, and the heating wire is an electromagnetic induction heating device. The electromagnetic induction heating device consists of an induction coil and a high-frequency power supply. The object to be heated is located outside the heating roller 65. By adjusting the output power of the high-frequency power supply, the temperature of the object to be heated can be precisely controlled. The handwheel 54 is provided to facilitate manually rotating the bidirectional screw 52, thereby driving the two sliders 55 to move towards the center of the bidirectional screw 52 or towards both sides of the bidirectional screw 52.

[0032] Working principle: During use, first, the bottle body 4 wrapped with the bottle label 3 is moved to the vicinity of the preheating mechanism 6 through the conveyor belt 2. Subsequently, the second motor 610 rotates to drive the fixed disk 61 to rotate, thereby driving the heating roller 65 to rotate. Then, the bottle body 4 is squeezed into the state as shown in Figure 2 the figure. Subsequently, the first motor 67 rotates to drive the pulley 68 to rotate, and then the heating roller 65 rotates driven by the second belt 69. The bottle label 3 is heated through the heating function of the heating roller 65. Then, the bottle label 3 is fixed to the bottle body 4 to a certain extent. Subsequently, the bottle body 4 is moved by the continuous rotation of the second motor 610 and the movement of the conveyor belt 2. Then, another bottle body 4 is moved between the heating rollers 65, and the next bottle body 4 is preheated and pre-tightened. When adjustment is required, the handwheel 54 is manually rotated to control the relative or opposite movement of the sliders 55, thereby realizing the control of the spacing of the preheating mechanism 6, and thus facilitating the application to different containers.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-tightening mechanism of a double-headed label applicator, comprising a bottom plate (1), a conveyor belt (2), and a bottle label (3). The conveyor belt (2) is arranged on the upper surface of the bottom plate (1), the bottle body (4) is placed on the upper surface of the conveyor belt (2), and the bottle label (3) is wrapped around the outer wall of the bottle body (4), characterized in that: The upper surface of the bottom plate (1) is provided with an adjusting mechanism (5) whose gap can be adjusted. The adjusting mechanism (5) includes a slider (55), and above the slider (55) is installed a preheating mechanism (6) that can preheat the outer surface of the bottle body (4).

2. The pre-tightening mechanism of a double-headed label applicator according to claim 1, characterized in that: The preheating mechanism (6) includes a fixed disk (61), a coupling (62), a fixed arm (63), a bearing seat (64), a heating roller (65), a first belt (66), a first motor (67), a pulley (68), a second belt (69), a second motor (610), and a fixed frame (611). The second motor (610) is fixedly connected to the inner wall of the slider (55), the fixed frame (611) is fixedly connected to the upper surface of the slider (55), the output end of the second motor (610) is rotatably connected to the inner wall of the fixed frame (611), and the output end of the second motor (610) is connected to the fixed disk (61) through the coupling (62). A plurality of mounting holes are formed in the outer wall of the fixed disk (61), the fixed arm (63) is fixedly connected to the inner wall of the mounting hole, the bearing seat (64) is fixedly connected to the outer wall of the fixed arm (63), and the heating roller (65) is rotatably connected between the bearing seats (64) through bearings.

3. The pre-tightening mechanism of a double-head labeler according to claim 2, characterized in that: Belt mounting wheels are arranged at the upper and lower ends of the heating roller (65), the first belt (66) is installed between the belt mounting wheels, the first motor (67) is fixedly connected to the upper inner wall of the fixed disk (61), and the pulley (68) is fixedly connected to the output end of the first motor (67).

4. The pre-tightening mechanism of a double-head label applicator according to claim 2, characterized in that: Another belt mounting wheel is arranged at the upper end of one of the heating rollers (65), and the second belt (69) is installed between the another belt mounting wheel and the pulley (68).

5. The pre-tightening mechanism of a double-headed labeling machine according to claim 1, characterized in that: The adjusting mechanism (5) further includes a base (51), a bidirectional screw (52), a guide rod (53), and a handwheel (54). The base (51) is fixedly connected to the upper surface of the bottom plate (1), the bidirectional screw (52) is rotatably connected to the inner wall of the base (51) through a bearing, and the guide rod (53) is fixedly connected to the inner wall of the base (51).

6. The pre-tightening mechanism of a double-head label applicator according to claim 5, characterized in that: The slider (55) is threadedly connected to the outer wall of the bidirectional screw (52), the slider (55) is slidably connected to the outer wall of the guide rod (53), and the handwheel (54) is fixedly connected to one end of the bidirectional screw (52).

7. The pre-tightening mechanism of a double-head label applicator according to claim 2, characterized in that: A heating wire is arranged inside the heating roller (65), and an anti-slip pad is wrapped around the outer wall of the heating roller (65). The anti-slip pad is made of synthetic rubber material.

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