Scraper structure for hot melt adhesive coating

Abstract

The utility model discloses a scraper structure for hot melt adhesive coating, which comprises a rack, an object placing table arranged on the rack, and a scraper coating machine main body formed by a blade group driven by a driving component arranged in the rack to move back and forth on the object placing table, the fixed seats are arranged on the two sides of the object placing table in a sliding mode and connected with a driving component in the machine frame, the knife rest is arranged on the fixed seats in a sliding mode, a connecting shaft is rotationally arranged on the knife rest, and locking pieces are rotationally arranged at the connecting positions of the knife rest and the two ends of the connecting shaft. Compared with a scraper structure arranged on a conventional scraper coating machine and a corresponding installation mode thereof, the scraper structure for hot melt adhesive coating has the advantages that the scraper can be correspondingly adjusted at different angles, and the scraper structure is simple in structure, convenient to use and high in practicability. Meanwhile, through the structural arrangement of the two end faces of the bottom blade of the scraper, the uniformity of the coating layer can be further improved.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive coating technology, and specifically to a scraper structure for hot melt adhesive coating. Background Technology

[0002] Currently, in the field of hot melt adhesive coating technology, doctor blade coating machines are commonly used to apply heated and melted hot melt adhesive to the object through the reciprocating motion of a doctor blade. However, the doctor blades commonly used in doctor blade coating machines on the market are made of metal and are usually installed at a fixed angle perpendicular to the worktable. Although this can meet the basic coating requirements, it also has certain shortcomings. Specifically, it is usually inconvenient to adjust the angle of the doctor blade during the adhesive application process. Insufficient or excessive contact force between the doctor blade and the object on the worktable during the movement can easily affect the coating effect and cause damage to the object. Moreover, the uniformity of hot melt adhesive dispersion and the coating effect are not ideal during the coating process, affecting the uniformity of the coating layer. Utility Model Content

[0003] The purpose of this invention is to provide a scraper structure for hot melt adhesive coating. This scraper structure can be easily adjusted to different angles according to different usage requirements, while further improving the uniformity of the coating layer.

[0004] The technical solution adopted by this utility model to solve the above problems is:

[0005] A scraper structure for hot melt adhesive coating includes a frame, a platform mounted on the frame, and a scraper assembly on the platform that is driven to move back and forth by a drive component inside the frame, forming the main body of the scraper coating machine. The scraper assembly includes a fixed base slidably mounted on both sides of the platform and connected to the drive component inside the frame, and a scraper holder slidably mounted on the fixed base. A connecting shaft is rotatably mounted on the scraper holder, and locking components are rotatably mounted at the two ends of the connecting shaft. A scraper is mounted on the connecting shaft, and the two ends of the scraper's bottom blade are respectively set as an inclined surface and an arc surface.

[0006] Preferably, the connecting shaft is detachably mounted on the tool holder via bushings fitted at the corresponding connection positions of the tool holders at both ends.

[0007] Preferably, the scraper can be detachably mounted on the connecting shaft via a mounting seat provided at a corresponding position on the connecting shaft.

[0008] Preferably, the tool holder is also equipped with a dial, and the pointer in the dial is fitted onto the corresponding position of the connecting shaft through a collar structure.

[0009] Preferably, a sliding rod is provided at the sliding connection between the two ends of the fixed base and the tool holder, and the sliding rod is marked with scale lines.

[0010] Preferably, a second connecting shaft can be detachably installed on the tool holder, and the second connecting shaft is marked with a second scale line and has two sets of second collars slidably arranged.

[0011] Compared with the prior art, this utility model has the following advantages and effects:

[0012] This utility model relates to a scraper structure for hot melt adhesive coating. Compared to conventional scraper structures and their installation methods on scraper coating machines, this scraper structure allows for adjustments to the scraper angle. Furthermore, the design of the scraper's bottom blade end faces, with one beveled side ensuring a smooth and even coating effect, and the other curved side further guarantees the coating area and the distribution of the hot melt adhesive during the coating process. The coating is uniform, and the angle of the scraper on the connecting shaft can be adjusted according to the usage requirements to use the arc surface for the initial leveling and laying of hot melt adhesive on the object to be coated. This is followed by the use of the inclined surface for uniform scraping, which improves the convenience of use and work efficiency. In addition, the blade with this end face setting at the bottom of the scraper can effectively reduce the contact stress between the scraper and the object to be coated on the table during the scraping process while ensuring normal scraping. It is less likely to cause the object to lock in the coating, thus improving the scraping effect and the stability and efficiency of the scraping process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the doctor blade coating machine according to an embodiment of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall structure of the blade assembly in an embodiment of this utility model.

[0015] Figure 3 This is an enlarged view of the detachable connection structure of the tool holder, the connecting shaft, and the scraper on the connecting shaft according to an embodiment of this utility model.

[0016] Figure 4 This is a partial enlarged view of the blade assembly in an embodiment of this utility model.

[0017] Figure 100: Frame 100, Table 101, Control Panel 102, Tool Assembly 1, Fixing Base 11, Threaded Rod 111, Slide Rod 112, Scale Line 1121, Tool Holder 12, Connecting Shaft 121, Scraper 13, Blade 131, Bevel 132, Arc 133, Locking Part 14, Bushing 15, Dial 16, Pointer 161, Collar Structure 1611, Second Connecting Shaft 122, Second Scale Line 1221, Second Collar 1222. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0019] See Figure 1-2 This embodiment relates to a hot melt adhesive coating blade 13 structure, including a frame 100, a platform 101 mounted on it, and a blade assembly 1 on the platform 101 that is driven to move back and forth by a drive component inside the frame 100, forming the blade 13 coating machine body. The blade assembly 1 includes a fixed base 11 slidably mounted on both sides of the platform 101 and connected to the drive component inside the frame 100, and a blade holder 12 slidably mounted on the fixed base 11. A connecting shaft 121 is rotatably mounted on the blade holder 12, and a locking member 14 is rotatably mounted at the connection points of the connecting shaft 121. A blade 13 is mounted on the connecting shaft 121, and the two ends of the blade 131 at the bottom of the blade 13 are respectively provided as a bevel 132 and an arc 133.

[0020] Specifically in this embodiment, such as Figure 1 The overall structure of this blade coating machine 13, as shown, includes a drive unit inside the frame 100 that drives the blade assembly 1 to move back and forth along the table 101 during the coating process. The drive unit can employ a ball screw and synchronous belt slide structure commonly used in blade coating machines 13 to achieve the sliding process of the blade assembly 1 along the table 101. The operation panel 102 on the frame 102 controls the blade assembly 1 and the corresponding coating process. For the specific structure of the blade assembly 1, please refer to [reference needed]. Figure 2As shown, during the movement of the fixed base 11 and its blade holder 12, the scraper 13 installed on the connecting shaft 121 can scrape the object to be coated and the hot melt adhesive on the platform 101. Specifically, in the early stages of use, the locking parts 14 provided at the connection points between the connecting shaft 121 and the blade holder 12 can be rotated to achieve the rotation and locking process of the connecting shaft 121. The locking parts 14 can be set with a threaded connection structure and cooperate with the threaded structure provided at the corresponding positions at both ends of the connecting shaft 121 for rotational connection and locking. The platform 101 can be appropriately adjusted by rotating the connecting shaft 121 on the blade holder 12 according to different usage requirements. The angle of the scraper 13 can be adjusted by rotating it according to the coating effect corresponding to the two ends of the bottom blade 131 of the scraper 13, which are respectively inclined surface 132 and arc surface 133. The inclined surface 132 is designed to ensure the coating effect of the bottom blade 131 of the scraper 13. The arc surface 133 can press the hot melt adhesive and make it locally dispersed along the object to be coated on the platform 101. At the same time, after the angle of the scraper 13 on the connecting shaft 121 is adjusted, the height of the blade holder 12 on the fixed base 11 can be adjusted by adjusting the sliding connection between the fixed base 11 and the blade holder 12. Specifically, the connection structure between the fixed base 11 and the blade holder 12 is as follows: Figure 1 or Figure 2As can be seen, the connection and fixation between the blade holder 12 and the fixed base 11 can be achieved through the threaded rod 111 on the fixed base 11 and the multiple sets of bolts rotatably mounted thereon, as well as the adjustment and locking process of the relative height of the blade holder 12. This allows the height of the blade holder 12 on the fixed base 11 to be adjusted according to the specific thickness of the object to be coated on the platform 101 and the corresponding position after the angle of the scraper 13 on the connecting shaft 121 is adjusted, so that the bottom blade 131 of the scraper 13 on the connecting shaft 121 contacts the object to be coated on the platform 101, ensuring the normal progress of the subsequent scraping process. This design of the scraper 13 structure for hot melt adhesive coating, compared to the conventional scraper 13 structure and its corresponding installation method on a scraper 13 coating machine, allows for corresponding adjustments to the scraper 13 at different angles. Furthermore, the structural design of the two ends of the bottom blade 131 of the scraper 13, compared to the conventional scraper 13 structure... The blade 131's end face structure, with its beveled side 132, ensures the smoothness and evenness of the coating layer applied by the scraper 13. Furthermore, the curved side 133 further guarantees the coating range and uniformity of the hot melt adhesive distribution during the scraping process. Additionally, the curved side 133 allows for initial leveling and laying of the hot melt adhesive on the object to be coated, adjusted by the angle of the scraper 13 on the connecting shaft 121, while the beveled side 132 facilitates uniform scraping, improving ease of use and work efficiency. Moreover, the blade 131 with this end face design at the bottom of the scraper 13 effectively reduces contact stress between the scraper and the object on the platform 101 during the scraping process, preventing the object from locking and improving the scraping effect, stability, and efficiency.

[0021] See Figure 3 The connecting shaft 121 is detachably mounted on the tool holder 12 via bushings 15 fitted at corresponding connection positions on both ends of the tool holder 12. Specifically, during installation and disassembly, the connecting shaft 121 on the tool holder 12 can achieve the rotation and detachable connection process of the tool holder 12 on the connecting shaft 121 through the bushings 15 fitted at both ends of the connecting shaft 121. Furthermore, the locking parts 14 at both ends of the connecting rod contact the corresponding end faces of the bushings 15 to lock the connecting shaft 121 and the tool holder 12. The connecting shaft 121 with this detachable connection structure on the tool holder 12 has a simple structure, further improving disassembly flexibility and ease of use.

[0022] The scraper 13 can be detachably mounted on the connecting shaft 121 via a mounting base provided at a corresponding position on the connecting shaft 121, such as... Figure 3As shown, the scraper 13 and the mounting base on the connecting shaft 121 can be connected by a plug-in structure with bolts provided thereon for the detachable connection of the scraper 13. Different models and specifications of scrapers 13 can be adapted for installation, disassembly, replacement, cleaning and other operations according to different usage requirements, thereby improving the detachability, flexibility and convenience of this blade assembly 1.

[0023] like Figure 1 or Figure 2 As shown, a scale 16 is also installed on the tool holder 12. A pointer 161 is provided in the scale 16 and is sleeved on the corresponding position of the connecting shaft 121 through a collar structure 1611. Specifically, when the connecting shaft 121 is installed, the angle of the scraper 13 on the corresponding mounting base is vertical to the object to be coated on the table 101. The pointer 161, which is sleeved on the connecting shaft 121 through the collar structure 1611, can rotate around the periphery of the connecting shaft 121 and cooperate with the scale 16 on the tool holder 12 to complete the initial scale adjustment process. Then, by rotating the connecting shaft 12... When the angle of the scraper 13 is adjusted, the pointer 161 can be rotated on the scale 16. The real-time angle during the rotation can be observed, and the locking parts 14 at both ends of the connecting shaft 121 can lock the corresponding angle. The connection structure between the scale 16 and its internal pointer 161 and the connecting shaft 121 is added, which can further improve the convenience and accuracy of the angle adjustment of the scraper 13 on the connecting shaft 121, meet different usage needs, and ensure the scraping effect of the scraper 13 and the coating stability of this blade assembly 1 structure.

[0024] The sliding connection between the two ends of the fixed base 11 and the tool holder 12 is also provided with a slide rod 112, and the slide rod 112 is marked with scale lines 1121, such as Figure 3 As shown, the corresponding slide bar 112 can further improve the stability of the blade holder 12 on the fixed base 11 during the height adjustment process. At the same time, with the matching marking of the corresponding scale line 1121 on the slide bar 112, it can further improve the accuracy of the blade holder 12 during the height adjustment process, as well as the uniformity and balance of the corresponding height, and improve the convenience and efficiency of the blade holder 12 adjustment process and the coating stability of the scraper 13 on it.

[0025] The tool holder 12 can also be detachably mounted with a second connecting shaft 122. The second connecting shaft 122 is marked with a second scale line 1221 and has two sets of second collars 1222 slidably disposed thereon. For details, please refer to [link to relevant documentation]. Figure 4As shown, the adaptation of the second connecting shaft 122 on the blade holder 12 enables preliminary measurement of the corresponding film width of the object to be coated on the platform 101 through the second scale line 1221 marked on it and the second collar 1222 that is slidably set, which facilitates comparison and judgment as well as subsequent cutting operations, thereby improving the functional diversity and usage flexibility of this blade assembly 1.

[0026] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A doctor blade structure for hot melt adhesive coating, comprising a frame, a platform mounted thereon, and a doctor blade assembly on the platform that is driven to reciprocate by a drive component located inside the frame, forming the main body of a doctor blade coating machine, characterized in that: The blade assembly includes a fixed base slidably disposed on both sides of the platform and connected to the internal drive component of the frame, and a blade holder slidably disposed on the fixed base. A connecting shaft is rotatably disposed on the blade holder, and locking components are rotatably disposed at the connection points of the connecting shaft and the two ends of the connecting shaft. A scraper is mounted on the connecting shaft, and the two ends of the bottom blade of the scraper are respectively set as a bevel and an arc surface.

2. The doctor blade structure for hot melt adhesive coating according to claim 1, characterized in that: The connecting shaft can be detachably mounted on the tool holder via bushings fitted at the corresponding connection positions of the tool holders at both ends.

3. The doctor blade structure for hot melt adhesive coating according to claim 1, characterized in that: The scraper can be detachably mounted on the connecting shaft via a mounting seat provided at a corresponding position on the connecting shaft.

4. The doctor blade structure for hot melt adhesive coating according to claim 1, characterized in that: The tool holder is also equipped with a dial, and the pointer inside the dial is fitted onto the corresponding position of the connecting shaft through a collar structure.

5. The doctor blade structure for hot melt adhesive coating according to claim 1, characterized in that: The sliding connection between the two ends of the fixed base and the tool holder is also provided with a sliding rod, and the sliding rod is marked with scale lines.

6. The doctor blade structure for hot melt adhesive coating according to claim 1, characterized in that: The tool holder can also be detachably installed with a second connecting shaft, which is marked with a second scale line and has two sets of second collars slidably disposed thereon.

Images