Rotary stop mechanism

Abstract

This utility model discloses a rotary shut-off mechanism, comprising: a mixing tube and a dispensing head disposed below the mixing tube. The mixing tube and the dispensing head are connected by a guide tube with a built-in guide channel. One end of a rotating rod extending perpendicular to the guide channel is embedded in the guide tube and has a connecting channel corresponding to the guide channel. The other end of the rotating rod, which is rotatably disposed, is connected to a driving component. When the rotating rod rotates to the 0° position with the driving component, the connecting channel in the rotating rod is connected to the guide channel of the guide tube. When the rotating rod rotates to the 60° position, the guide channel between the mixing tube and the dispensing head is closed. This utility model can both block the glue pressure in the pipe above the dispensing head to prevent glue overflow in the closed state and improve the response speed and dispensing accuracy of repeated opening and closing of the glue.

Description

Technical Field

[0001] This utility model relates to the field of dispensing technology, and in particular to a rotary stop mechanism. Background Technology

[0002] Common two-component dispensing machines typically have two dispensing valves and one dispensing head. The adhesive extruded from the two valves flows into the dispensing head through two adhesive-flowing pipes. The two valves control the dispensing volume of the two different adhesive components. The pipes connecting the dispensing head and the two valves are usually located on an adapter block. These two pipes are angled together, each inclined, and converge at the dispensing head's inlet. In existing technology, when dispensing two-component adhesives, the adhesive is mixed through a mixing tube before dispensing. When dispensing stops, the pressure in the mixing tube is not released in time, easily causing adhesive to overflow and drip onto the product, resulting in product defects. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a rotary shut-off mechanism, which can not only block the glue pressure in the pipe above the dispensing head to prevent glue from overflowing when the glue is closed, but also improve the response speed and dispensing accuracy of repeated opening and closing of the glue.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a rotary shut-off mechanism, comprising: a mixing tube and a dispensing head disposed below the mixing tube, wherein the mixing tube and the dispensing head are connected by a guide tube having a built-in guide channel, one end of a rotating rod extending in a direction perpendicular to the guide channel is embedded in the guide tube and has a connecting channel corresponding to the guide channel, the other end of the rotating rod being rotatably connected to a driving component, wherein when the rotating rod rotates with the driving component to the 0° position, the connecting channel in the rotating rod is connected to the guide channel of the guide tube, and when the rotating rod rotates to the 90° position, the guide channel between the mixing tube and the dispensing head is closed.

[0005] The following are further improvements to the above technical solution: 1. In the above solution, a mounting base is provided on the outer side of the guide tube, and the drive assembly is mounted on the surface of the mounting base opposite to the guide tube.

[0006] 2. In the above scheme, the driving component is a rotary cylinder or a motor.

[0007] 3. In the above scheme, a driving block is mounted on the rotating shaft of the driving component, and the driving block, which is rotatably disposed in the mounting base, is connected to the end of the rotating rod opposite to the communicating flow channel by a keyway.

[0008] 4. In the above scheme, a protective sleeve block that is fixedly connected to the mounting base is provided on the outside of the guide tube opposite to the mounting base.

[0009] 5. In the above scheme, the dispensing head is installed at the lower end of the sheath block.

[0010] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model relates to a rotary shut-off mechanism. The mixing tube and the dispensing head are connected via a guide tube containing a built-in adhesive flow channel. One end of a rotating rod extending perpendicular to the guide tube is embedded in the guide tube and has a corresponding connecting channel. The other end of the rotatable rotating rod is connected to a drive assembly. When the rotating rod rotates to the 0° position with the drive assembly, the connecting channel within the rotating rod connects with the adhesive flow channel of the guide tube. When the rotating rod rotates to the 90° position, the adhesive flow channel between the mixing tube and the dispensing head is closed. This mechanism allows for shut-off of the adhesive flow channel near the dispensing head, preventing adhesive pressure from overflowing in the closed state within the pipe above the dispensing head and improving the response speed and dispensing accuracy during repeated opening and closing of the adhesive. Attached Figure Description

[0011] Appendix Figure 1 This is a schematic diagram of the rotary stop mechanism of this utility model; Appendix Figure 2 This is an exploded view of the rotary stop mechanism of this utility model. Appendix Figure 3 This is a partial structural cross-sectional view of the rotary stop mechanism of this utility model.

[0012] In the above attached diagram: 1. Dispensing head; 2. Mixing tube; 3. Guide tube; 31. Guide channel; 4. Rotating rod; 41. Connecting channel; 5. Drive assembly; 51. Drive block; 61. Mounting base; 62. Sheath block. Detailed Implementation

[0013] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0014] Example 1: A rotary shut-off mechanism includes: a mixing tube 2 and a dispensing head 1 disposed below the mixing tube 2. The mixing tube 2 and the dispensing head 1 are connected by a guide tube 3 with a built-in guide channel 31. One end of a rotating rod 4 extending in a direction perpendicular to the guide channel 31 is embedded in the guide tube 3 and has a connecting channel 41 corresponding to the guide channel 31. The other end of the rotating rod 4 is rotatably connected to a driving assembly 5. When the rotating rod 4 rotates with the driving assembly 5 to the 0° position, the connecting channel 41 in the rotating rod 4 is connected to the guide channel 31 of the guide tube 3. When the rotating rod 4 rotates to the 90° position, the guide channel 31 between the mixing tube 2 and the dispensing head 1 is closed.

[0015] A mounting base 61 is provided on the outer side of the aforementioned guide tube 3, and the aforementioned drive assembly 5 is mounted on the surface of the mounting base 61 opposite to the side of the guide tube 3; the aforementioned drive assembly 5 is a rotary cylinder.

[0016] Example 2: A rotary shut-off mechanism includes: a mixing tube 2 and a dispensing head 1 disposed below the mixing tube 2. The mixing tube 2 and the dispensing head 1 are connected by a guide tube 3 with a built-in guide channel 31. One end of a rotating rod 4 extending in a direction perpendicular to the guide channel 31 is embedded in the guide tube 3 and has a connecting channel 41 corresponding to the guide channel 31. The other end of the rotating rod 4 is rotatably connected to a driving assembly 5. When the rotating rod 4 rotates with the driving assembly 5 to the 0° position, the connecting channel 41 in the rotating rod 4 is connected to the guide channel 31 of the guide tube 3. When the rotating rod 4 rotates to the 90° position, the guide channel 31 between the mixing tube 2 and the dispensing head 1 is closed.

[0017] A mounting base 61 is provided on the outer side of the aforementioned adhesive guide tube 3, and the aforementioned drive assembly 5 is mounted on the surface of the mounting base 61 opposite to the side of the adhesive guide tube 3; the aforementioned drive assembly 5 is a motor.

[0018] A drive block 51 is mounted on the rotating shaft of the drive assembly 5. The drive block 51, which is rotatably disposed in the mounting base 61, is connected to the end of the rotating rod 4 opposite to the end of the connecting channel 41 by a keyway.

[0019] The aforementioned adhesive guide tube 3 is provided with a protective sleeve block 62 fixedly connected to the mounting base 61 on the outside opposite to the mounting base 61; the aforementioned adhesive dispensing head 1 is installed at the lower end of the protective sleeve block 62.

[0020] The working principle is as follows: Glue A and Glue B are mixed through the mixing tube and then enter the dispensing head through the glue guide channel of the glue guide tube for dispensing. The drive component drives the rotating rod to rotate. When the connecting channel on the rotating rod is connected to the glue guide channel of the glue guide tube, the entire dispensing channel is open. When the connecting channel on the rotating rod and the glue guide channel are perpendicular to each other, the glue guide channel of the glue guide tube, which is separated by the rotating rod on both sides, is closed, and the entire dispensing channel is closed. This realizes the opening and closing of glue during the dispensing process. At the dispensing head, the glue channel is shut off, blocking the glue pressure in the pipe above the dispensing head without releasing the pressure. This can prevent glue from overflowing when the glue is closed, avoiding damage to the product and adverse interference with dispensing accuracy. It can also improve the response speed and dispensing accuracy of repeated opening and closing of glue.

[0021] When the above-mentioned rotary shut-off mechanism is used, it can shut off the glue flow channel near the dispensing head. This can block the glue pressure in the pipe above the dispensing head to prevent glue from overflowing when the glue is off, and can also improve the response speed and dispensing accuracy of repeated opening and closing of the glue.

[0022] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A rotary stop mechanism, comprising: The mixing tube (2) and the dispensing head (1) located below the mixing tube (2) are characterized in that: the mixing tube (2) and the dispensing head (1) are connected by a guide tube (3) with a built-in guide channel (31), one end of a rotating rod (4) extending in a direction perpendicular to the guide channel (31) is embedded in the guide tube (3) and has a connecting channel (41) corresponding to the guide channel (31), the other end of the rotating rod (4) is rotatably connected to a driving assembly (5), when the rotating rod (4) rotates to the 0° position with the driving assembly (5), the connecting channel (41) in the rotating rod (4) is connected to the guide channel (31) of the guide tube (3), and when the rotating rod (4) rotates to the 90° position, the guide channel (31) between the mixing tube (2) and the dispensing head (1) is closed.

2. The rotary stop mechanism according to claim 1, characterized in that: A mounting base (61) is provided on the outside of the guide tube (3), and the drive assembly (5) is mounted on the surface of the mounting base (61) opposite to the guide tube (3).

3. The rotary stop mechanism according to claim 1 or 2, characterized in that: The drive component (5) is a rotary cylinder or a motor.

4. The rotary stop mechanism according to claim 2, characterized in that: A drive block (51) is mounted on the rotating shaft of the drive assembly (5). The drive block (51), which is rotatably disposed in the mounting base (61), is connected to the end of the rotating rod (4) opposite to the end of the connecting channel (41) by a keyway.

5. The rotary stop mechanism according to claim 2, characterized in that: The guide tube (3) is provided with a sheath block (62) fixedly connected to the mounting base (61) on the outside opposite to the mounting base (61).

6. The rotary stop mechanism according to claim 5, characterized in that: The dispensing head (1) is installed at the lower end of the sheath block (62).

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