Hot melt coating marking machine head with double helix flow guide structure

Abstract

The utility model discloses a hot melt coating marking-off machine head with double helical flow guide structure relates to marking-off machine head structure field, including fixed block, the adapter block is located fixed block one side, the feeding column is located adapter block top, the discharge column is located fixed block other side bottom, the discharge runner is located between fixed block, adapter block, feeding column and discharge column, and control assembly is located in fixed block, can control the discharge of machine head, and the top detachable connection of column is on marking-off machine, and the bottom of column is equipped with adapter block, and the feeding chamber is located in the column, and first helical flow guide piece is located on the inner wall of feeding chamber, can effectively solve the problem of the discharge uniformity and coating thickness unevenness of hot melt coating in the marking-off process, thereby ensure the quality of road marking.

Description

Technical Field

[0001] This utility model relates to the field of marking machine head structure, specifically a hot melt coating marking machine head with a double spiral flow guiding structure. Background Technology

[0002] Hot melt paint is a popular material for road marking due to its good wear resistance and strong reflective properties. However, hot melt paint needs to be heated to around 220℃ during application. At this high temperature, hot melt paint has a high viscosity, and the flow channel and discharge structure of ordinary marking machine heads cannot provide sufficient pressure and power to help the high-viscosity hot melt paint pass through smoothly and be discharged evenly. This results in inconsistent line thickness and width during road marking, affecting the quality of the road markings. Utility Model Content

[0003] The purpose of this invention is to provide a hot melt paint marking head with a double spiral flow guiding structure, which can effectively solve the problems of uneven output and uneven coating thickness of hot melt paint during the marking process, thereby ensuring the quality of road marking.

[0004] The above-mentioned optimized structure of this utility model is achieved through the following technical solution: a hot melt paint marking head with a double helix flow guiding structure, including a fixing block;

[0005] A connecting block, wherein the connecting block is disposed on one side of the fixed block;

[0006] A feed column is located at the top of the adapter block;

[0007] A discharge column is located at the bottom of the other side of the fixed block;

[0008] The discharge channel is disposed between the fixed block, the connecting block, the feeding column, and the discharge column;

[0009] A control component, located within the fixed block, is used to control the material output from the machine head.

[0010] The feed column includes a column body, the top of which is detachably connected to the marking machine, and the bottom of which is provided with the adapter block;

[0011] The feeding chamber is located within the column.

[0012] The first spiral guide vane is disposed on the inner wall of the feed chamber.

[0013] In some embodiments, the discharge channel includes a first channel that extends through the transition block and is connected to the feed chamber;

[0014] A storage chamber, wherein the storage chamber is located within the fixed block;

[0015] The second flow channel is connected at both ends to the first flow channel and the storage chamber, respectively.

[0016] The third flow channel is coaxially located at the bottom of the storage chamber and extends through the bottom of the fixed block and the discharge column.

[0017] In some embodiments, the diameter of the first flow channel gradually decreases along the feed chamber toward the second flow channel, and the diameter of the second flow channel gradually decreases along the first flow channel toward the storage chamber.

[0018] In some embodiments, the fixing block includes a control groove, which is coaxially disposed above the feeding chamber, and the control component is disposed within the control groove;

[0019] A lifting trough is located between the control trough and the feeding chamber.

[0020] In some embodiments, the control component includes a control rod that is slidably disposed within the lifting groove, and the bottom of the control rod can block the bottom opening of the third flow channel;

[0021] A vibrating element is provided on the top of the control rod, which can drive the control rod to slide in the lifting groove;

[0022] A reset spring is sleeved on the control rod and located between the bottom wall of the control groove and the vibrating element.

[0023] In some embodiments, the control component further includes a second spiral guide vane, which is disposed on the control rod and within the third flow channel.

[0024] In some embodiments, the vibrating element is a piezoelectric ceramic vibrating element.

[0025] In some embodiments, the control assembly further includes a bellows sleeved on the control rod and disposed between the bottom wall of the control groove and the vibrating element.

[0026] In some embodiments, the bottom opening section of the third flow channel and the bottom section of the control rod are both isosceles trapezoids.

[0027] In summary, this utility model has the following beneficial effects:

[0028] This invention features a first spiral guide vane on the inner wall of the feeding chamber, which provides initial spiral guidance for the incoming hot melt coating, enabling preliminary stirring and homogenization during its rotational flow. A second spiral guide vane on the control rod moves up and down within the third flow channel, further stirring and homogenizing the hot melt coating. This forms a double spiral guide structure inside the die head, resulting in multiple stirring and homogenization processes from feeding to discharging. This improves the flow state of the hot melt coating, reduces velocity differences within the flow channel, and enhances the uniformity of the discharge and coating thickness, thereby ensuring the quality of road marking.

[0029] This invention gradually reduces the diameter of the first flow channel 51 and the second flow channel 53 to form a tapered structure. When the hot melt coating passes through these two tapered flow channels, the flow rate continuously increases, the shear force inside the hot melt coating increases, promotes the mixing of various components in the hot melt coating, and further improves the uniformity of the output. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of the present invention;

[0031] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle.

[0032] In the diagram: 1. Fixed block; 11. Control groove; 2. Adapter block; 3. Feed column; 31. Column body; 32. Feed chamber; 33. First spiral guide vane; 4. Discharge column; 5. Discharge channel; 51. First channel; 52. Storage chamber; 53. Second channel; 6. Control assembly; 61. Control rod; 62. Vibrating component; 63. Return spring; 64. Bellows. Detailed Implementation

[0033] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] refer to Figure 1-2The hot melt paint marking head with a double helix flow guiding structure includes a fixed block 1, a connecting block 2, a feed column 3, a discharge column 4, a discharge channel 5, and a control component 6. The fixed block 1 can be connected to the hot melt paint marking machine. The shape of the fixed block 1 and the connection structure with the hot melt paint marking machine are existing technologies and will not be described in detail here. The adapter block 2 is located on one side of the fixed block 1 and can be connected to the feed column 3 and the fixed block 1 via a threaded connection. It guides the hot melt paint from the feed column 3 to the discharge channel 5 inside the fixed block 1. The fixed block 1 and the adapter block 2 can be made of high-strength aluminum alloy to ensure structural strength and lightweight. The feed column 3 is located on the top of the adapter block 2 and can be connected to the hot melt chamber of the hot melt paint marking machine to facilitate the entry of the hot melt paint into the machine head. The discharge column 4 is located at the bottom of the other side of the fixed block 1 and can output the hot melt paint to the marking work surface. The feed column 3 and the discharge column 4 can be made of high-temperature resistant stainless steel, which is corrosion resistant and can withstand the impact of high-temperature hot melt paint. The discharge channel 5 is located between the fixed block 1, the adapter block 2, the feed column 3, and the discharge column 4, which can provide a channel for the flow of hot melt paint and ultimately coat it onto the road surface. The control component 6 is located inside the fixed block 1 and can control the discharge of the machine head to achieve uniform discharge of hot melt paint.

[0035] The feed column 3 includes a column body 31, a feed chamber 32, and a first spiral guide vane 33. The top of the column body 31 is detachably connected to the marking machine, either by threaded connection or by bolt assembly, facilitating installation and replacement. This is existing technology and will not be elaborated here. A transition block 2 is provided at the bottom of one side of the column body 31. The feed chamber 32 is located inside the column body 31 and can hold the hot melt coating material conveyed from the marking machine. The first spiral guide vane 33 is spirally arranged on the inner wall of the feed chamber 32, which can initially guide and stir the hot melt coating material entering the feed chamber 32, so that the hot melt coating material forms a spiral flow trajectory during the flow process, thereby improving the flow state of the hot melt coating material and reducing the problem of uneven mixing caused by uneven flow rate. The first spiral guide vane 33 can be made of polytetrafluoroethylene (PTFE) material, with a smooth surface, which reduces the adhesion of the hot melt coating material.

[0036] In some embodiments, the feed chamber 32 is provided with two sets of first spiral guide vanes 33, which are arranged alternately on the inner wall of the feed chamber 32. This can further enhance the stirring and guiding effect on the hot melt coating, so that the hot melt coating can be more fully mixed and homogenized before entering the discharge channel 5.

[0037] In some embodiments, the discharge channel 5 includes a first channel 51, a storage chamber 52, a second channel 53, and a third channel. The first channel 51 passes through the transfer block 2 and is connected to the feed chamber 32, allowing the hot melt coating in the feed chamber 32 to be introduced into the subsequent channel. The storage chamber 52 is located inside the fixed block 1 and serves as a temporary storage space for the hot melt coating, buffering the flow of the hot melt coating, reducing the impact of feed fluctuations on the discharge, and ensuring the stability of the hot melt coating supply. The two ends of the second channel 53 are connected to the first channel 51 and the storage chamber 52, respectively. The third channel is coaxially located at the bottom of the storage chamber 52 and passes through the bottom of the fixed block 1 and the discharge column 4, allowing the hot melt coating in the storage chamber 52 to be output to the area to be coated, thus realizing the marking function of the hot melt coating marking machine.

[0038] In some embodiments, the diameter of the first flow channel 51 gradually decreases along the feed chamber 32 toward the second flow channel 53, forming a tapered structure, which gradually increases the flow rate of the hot melt coating during the flow process, further promoting the mixing and homogenization of the hot melt coating; the diameter of the second flow channel 53 gradually decreases along the first flow channel 51 toward the storage chamber 52, which can further accelerate and homogenize the hot melt coating.

[0039] In some embodiments, the fixing block 1 includes a control groove 11 and a lifting groove. The control groove 11 is coaxially disposed above the feeding chamber 32. The control groove 11 is provided with a control component 6. The lifting groove is disposed between the control groove 11 and the feeding chamber 32, which can provide space for the movement of the control component 6.

[0040] In some embodiments, the control component 6 includes a control rod 61, a vibrating element 62, and a return spring 63. The control rod 61 is slidably disposed within the lifting groove, and the bottom of the control rod 61 can block the bottom opening of the third flow channel. This is prior art, and the specific blocking principle will not be elaborated here. The material discharge is controlled by the up-and-down movement of the control rod 61. The length, diameter, and shape of the control rod 61 are designed according to the structure of the lifting groove and the third flow channel to ensure that the control rod 61 can accurately achieve the material discharge control function. The vibrating element 62 is disposed at the top of the control rod 61 and can drive the control rod 61 to slide in the lifting groove. The vibrating element 62 can be made of piezoelectric ceramic. When an alternating electric field is applied to the piezoelectric ceramic vibrator, the piezoelectric ceramic will undergo periodic expansion and contraction deformation, thereby driving the control rod 61 to slide up and down in the lifting groove, thus achieving precise control of the material discharge. The sliding of the control rod 61 can also create vibration at the discharge port, thereby disrupting the surface tension and viscous resistance of the hot melt coating at the discharge port and promoting uniform discharge of the hot melt coating. The return spring 63 is sleeved on the control rod 61 and is located between the bottom wall of the control groove 11 and the vibrator 62. When the vibrator 62 stops working, the return spring 63 returns the control rod 61 to the position of blocking the bottom opening of the third flow channel.

[0041] In some embodiments, the control component 6 further includes a second spiral guide vane, which is disposed on the control rod 61 and in the third flow channel. When the control rod 61 moves up and down in the third flow channel, the second spiral guide vane re-stirs and homogenizes the hot melt coating, further improving the uniformity of the output.

[0042] In some embodiments, the control component 6 further includes a bellows 64, which is sleeved on the control rod 61 and located between the bottom wall of the control groove 11 and the vibrating member 62. This can achieve sealing and protection of the control rod 61, preventing hot melt coating from entering the control groove 11 and affecting the normal operation of the control component 6.

[0043] In some embodiments, the bottom opening cross section of the third flow channel and the bottom cross section of the control rod 61 are both isosceles trapezoids, which can improve the sealing effect of the control rod 61 on the bottom opening of the third flow channel, reduce the leakage of hot melt coating, and facilitate the smooth flow of hot melt coating when the control rod 61 moves up and down.

[0044] The specific working principle is as follows:

[0045] Hot melt coating material enters the marking head of the marking machine through the feed column 3. In the feed chamber 32, the first spiral guide vane 33 guides the hot melt coating material downwards along the spiral path, performing preliminary stirring and homogenization. The hot melt coating material enters the second flow channel 53 through the first flow channel 51. Due to the tapered design of the first and second flow channels 51 and 53, the flow rate of the hot melt coating material gradually increases, further promoting mixing. The hot melt coating material enters the storage chamber 52 for temporary storage, buffering fluctuations in the feed. When discharge is required, an alternating electric field is applied to the piezoelectric ceramic vibrator, which drives the control rod 61 to vibrate up and down in the lifting groove. The second spiral guide vane on the control rod 61 further stirs and homogenizes the hot melt coating material in the third flow channel. Simultaneously, the up and down vibration of the control rod 61 opens and closes the bottom opening of the third flow channel, achieving precise control of the discharge. The hot melt coating material is output from the third flow channel through the discharge column 4 to the marking work surface, completing the marking operation.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hot melt paint marking head with a double helix flow guiding structure, including a fixing block (1); Adapter block (2), the adapter block (2) is disposed on one side of the fixed block (1); Feed column (3), the feed column (3) is located on the top of the adapter block (2); The discharge column (4) is located at the bottom of the other side of the fixed block (1); The discharge channel (5) is located between the fixed block (1), the connecting block (2), the feeding column (3), and the discharge column (4); Control component (6), which is located inside the fixed block (1), can control the discharge of the machine head; Its features are: The feed column (3) includes a column body (31), the top of which is detachably connected to the marking machine, and the bottom of which is provided with the adapter block (2). Feed chamber (32), the feed chamber (32) is located inside the column (31); The first spiral guide vane (33) is disposed on the inner wall of the feed chamber (32).

2. The hot melt paint marking head with a double-helix flow guiding structure according to claim 1, characterized in that: The discharge channel (5) includes a first channel (51), which passes through the transition block (2) and is connected to the feed chamber (32); Storage chamber (52), the storage chamber (52) is located inside the fixed block (1); The second flow channel (53) is connected at both ends to the first flow channel (51) and the storage chamber (52), respectively. The third flow channel is coaxially located at the bottom of the storage chamber (52) and extends through the bottom of the fixed block (1) and the discharge column (4).

3. The hot melt paint marking head with a double helix flow guiding structure according to claim 2, characterized in that: The diameter of the first flow channel (51) gradually decreases along the feed chamber (32) toward the second flow channel (53), and the diameter of the second flow channel (53) gradually decreases along the first flow channel (51) toward the storage chamber (52).

4. The hot melt paint marking head with a double helix flow guiding structure according to claim 2, characterized in that: The fixing block (1) includes a control groove (11), which is coaxially disposed above the feeding chamber (32), and the control component (6) is disposed in the control groove (11). The lifting trough is located between the control trough (11) and the feeding chamber (32).

5. The hot melt paint marking head with a double-helix flow guiding structure according to claim 4, characterized in that: The control component (6) includes a control rod (61), which is slidably disposed in the lifting groove, and the bottom of the control rod (61) can block the bottom opening of the third flow channel; Vibrating element (62), the vibrating element (62) is provided on the top of the control rod (61), and can drive the control rod (61) to slide in the lifting groove; A reset spring (63) is sleeved on the control rod (61) and located between the bottom wall of the control groove (11) and the vibrating element (62).

6. The hot melt paint marking head with a double helix flow guiding structure according to claim 5, characterized in that: The control component (6) further includes a second spiral guide vane, which is disposed on the control rod (61) and within the third flow channel.

7. The hot melt paint marking head with a double helix flow guiding structure according to claim 5, characterized in that: The vibrating element (62) is a piezoelectric ceramic vibrating element.

8. The hot melt paint marking head with a double helix flow guiding structure according to claim 5, characterized in that: The control component (6) also includes a bellows (64), which is sleeved on the control rod (61) and located between the bottom wall of the control groove (11) and the vibrating element (62).

9. The hot melt paint marking head with a double helix flow guiding structure according to claim 5, characterized in that: The bottom opening section of the third flow channel and the bottom section of the control rod (61) are both isosceles trapezoids.

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