Coating machine rotating pull rod device and coating machine

Abstract

This invention discloses a rotating pull rod device for a coating machine, including a fixed slide rail, a sliding seat, and a rotating pull rod for mounting a spray gun. The sliding seat is slidably mounted on the fixed slide rail, and the rotating pull rod is rotatably mounted on the sliding seat. A limiting elastic element is provided between the sliding seat and the rotating pull rod to limit the rotational position of the rotating pull rod. A coating machine is also disclosed, including a frame, a roller, a spray gun, and the aforementioned rotating pull rod device. The roller is mounted on the frame, the fixed slide rail is fixed to the frame, and the spray gun is mounted on the rotating pull rod and extends into the roller. This rotating pull rod device and the coating machine have advantages such as simple structure, convenient operation, and the ability to avoid damage to the spray gun when moving it.

Description

Technical Field

[0001] This invention relates to the field of food and pharmaceutical packaging machinery and equipment, and in particular to a coating machine rotating pull rod device and a coating machine. Background Technology

[0002] Currently, pharmaceutical companies produce a variety of tablets, and different tablet varieties are approved according to demand and requirements. Coating is carried out on tablets in different batches. In order to reduce the number of high-efficiency coating machines and enhance the versatility of the equipment, the equipment needs to meet the requirements of large-scale batch coating. Existing coating machines adopt a multi-roller design, and only the roller corresponding to the production capacity needs to be replaced when changing batches. Since the spray gun, cleaning ball, etc. are placed inside the roller, the rotating pull rod device that supports the spray gun, cleaning ball, etc. needs to be removed when changing the roller to facilitate roller replacement.

[0003] Existing Chinese patents, with an application date of December 28, 2017 and application number "201711458723.6", disclose a granule coating machine. Chinese patents with an application date of August 14, 2017 and application number "CN201721013038.8" disclose a spray gun mounting bracket mechanism for a replaceable roller coating machine. Korean patent "KR101706726B1" discloses a coating machine. Existing patents use two rotating shafts to rotate the spray gun outside the equipment for easy roller replacement. However, when the two shafts rotate, the spray gun collides with the front door (large round door), affecting the spray gun and its support. That is, the existing coating machine's rotating pull rod device is a dual-shaft structure; when the spray gun, cleaning ball, and other devices are pulled out, both shafts move simultaneously. During this movement, it is difficult to avoid the spray gun colliding with the front door of the high-efficiency coating machine, causing deformation of the spray gun and resulting in abnormal atomization. Moreover, the two-axis limitless mechanism of the existing coating machine's rotating pull rod device is prone to swaying, causing unnecessary damage. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a coating machine rotating pull rod device and coating machine that are simple in structure, easy to operate, and can avoid damage to the spray gun when moving the spray gun.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A coating machine rotary pull rod device includes a fixed slide rail, a sliding seat, and a rotary pull rod for mounting a spray gun. The sliding seat is slidably mounted on the fixed slide rail, and the rotary pull rod is rotatably mounted on the sliding seat. A limiting elastic element for limiting the rotation position of the rotary pull rod is provided between the sliding seat and the rotary pull rod.

[0007] As a further improvement to the above technical solution:

[0008] The rotating tie rod is mounted on the sliding seat via bearings.

[0009] The limiting elastic element is a limiting spring.

[0010] The rotating rod is an L-shaped rod, with one end of the L-shaped rod rotatably mounted on the sliding seat and the other end used to mount the spray gun.

[0011] The rotating rod is provided with a positioning plate, and the positioning plate is provided with a positioning post for limiting the rotating rod to the first rotation angle α or the second rotation angle β. One end of the limiting elastic element is connected to the sliding seat and the other end is connected to the positioning post.

[0012] A coating machine includes a frame, a roller, a spray gun, and the aforementioned coating machine rotating pull rod device. The roller is mounted on the frame, the fixed slide rail is fixed on the frame, and the spray gun is mounted on the rotating pull rod and extends into the roller.

[0013] As a further improvement to the above technical solution:

[0014] The fixed slide rail is located above the roller.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] The rotary pull rod device for a coating machine of the present invention includes a fixed slide rail, a sliding seat, and a rotary pull rod for mounting a spray gun. The sliding seat is slidably mounted on the fixed slide rail, and the rotary pull rod is rotatably mounted on the sliding seat. A limiting elastic element is provided between the sliding seat and the rotary pull rod to limit the rotational position of the rotary pull rod. When changing the roller, the sliding seat slides along the fixed slide rail with the rotary pull rod, removing the spray gun from the roller. Then, the rotary pull rod is rotated to move the spray gun to one side. This structure allows for segmented removal and rotation of the pull rod, effectively preventing improper operation that could cause the spray gun, cleaning balls, or other devices inside the roller to collide with the front door of the coating machine. This rotary pull rod device for a coating machine has a simple structure, is easy to operate, and can prevent damage to the spray gun when moving it. Because this rotary pull rod device has a limiting elastic element, the rotational position of the rotary pull rod is limited, preventing the rotary pull rod from swinging.

[0017] The coating machine of the present invention includes a frame, a roller, a spray gun, and the aforementioned rotating pull rod device for coating machines. The roller is mounted on the frame, a fixed slide rail is fixed on the frame, and the spray gun is mounted on the rotating pull rod and extends into the roller. This coating machine possesses all the advantages of the rotating pull rod device for coating machines. Attached Figure Description

[0018] Figure 1 This is a front view structural schematic diagram (working position) of the rotating pull rod device of the coating machine of the present invention.

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 This is a side view of the rotating pull rod device of the coating machine of the present invention (working position).

[0021] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0022] Figure 5 This is a schematic diagram of the main structure of the rotating pull rod device of the coating machine of the present invention (with position changed).

[0023] Figure 6 This is a schematic diagram of the coating machine of the present invention (working position).

[0024] The labels in the diagram represent:

[0025] 1. Fixed slide rail; 2. Sliding seat; 21. Positioning plate; 22. Positioning column; 3. Spray gun; 4. Rotating tie rod; 5. Limiting elastic element; 6. Bearing; 7. Frame; 8. Roller. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Figures 1 to 5 An embodiment of the rotary pull rod device for a coating machine of the present invention is shown. This rotary pull rod device includes a fixed slide rail 1, a sliding seat 2, and a rotary pull rod 4 for mounting a spray gun 3. The sliding seat 2 is slidably mounted on the fixed slide rail 1, and the rotary pull rod 4 is rotatably mounted on the sliding seat 2. A limiting elastic element 5 is provided between the sliding seat 2 and the rotary pull rod 4 to limit the rotational position of the rotary pull rod 4. When changing the roller 8, the sliding seat 2 slides along the fixed slide rail 1 with the rotary pull rod 4, removing the spray gun 3 from the roller 8. Then, the rotary pull rod 4 is rotated to move the spray gun 3 to one side. This structure allows for segmented removal and rotation of the rotary pull rod 4, effectively preventing improper operation that could cause the spray gun 3, cleaning balls, or other devices inside the roller 8 to collide with the front door of the coating machine. This rotary pull rod device for a coating machine has a simple structure, is easy to operate, and can prevent damage to the spray gun 3 when moving it. The rotating pull rod device of this coating machine has a limiting elastic element 5, which is used to limit the rotation position of the rotating pull rod 4 and prevent the rotating pull rod 4 from swinging.

[0028] In this embodiment, as Figure 2 As shown, the rotating rod 4 is mounted on the sliding seat 2 via a bearing 6 (preferably a deep groove ball bearing). The rotating rod 4 can rotate around the center of the bearing 6 to adjust its rotational position. The limiting elastic element 5 is a limiting spring.

[0029] In this embodiment, as Figure 1 and Figure 5 As shown, the rotating rod 4 is an L-shaped rod, which facilitates the arrangement of its position. One end of the L-shaped rod is rotatably mounted on the sliding seat 2 via the bearing 6, and the other end is used to install the spray gun 3.

[0030] In this embodiment, as Figure 4 As shown, the rotating pull rod 4 is provided with a positioning plate 21, and the positioning plate 21 is provided with a positioning post 22 for limiting the rotating pull rod 4 at the first rotation angle α or the second rotation angle β. One end of the limiting elastic member 5 is connected to the sliding seat 2, and the other end is connected to the positioning post 22. When no external force is applied, the limiting elastic element 5 can maintain balance between the rotating rod 4 at the first angle α (e.g., the working position where the spray gun 3 is inside the drum 8) and the second angle β (e.g., the replacement position where the spray gun 3 is outside the drum 8). When an external force is applied, it can rotate between the working position and the replacement position. That is, in the working state, the rotating rod 4 rotates to the first angle α, i.e., the working position. Under the limiting action of the limiting spring and without the action of external force, the rotating rod 4 remains at the first angle α. At this time, the spray gun 3 on the rotating rod 4 is inside the drum 8 and works normally. When replacing the drum 8, first slide the sliding seat 2 along the fixed slide rail 1 to move the spray gun 3 on the rotating rod 4 to an appropriate position outside the drum 8, and then rotate the rotating rod 4 to the second angle β, i.e., the replacement position. Under the limiting action of the limiting spring and without the action of external force, the rotating rod 4 remains at the second angle β. At this time, the spray gun 3 is in the replacement position that does not interfere with the replacement of the drum 8. Since the sliding seat 2, the rotating rod 4, the bearing 6 and the limiting spring are integrated into one unit, the rotating rod 4 can rotate at any position where the sliding seat 2 moves.

[0031] Figure 6 An embodiment of the coating machine of the present invention is shown. The coating machine includes a frame 7, a roller 8, a spray gun 3, and the aforementioned rotating pull rod device. The roller 8 is mounted on the frame 7, and a fixed slide rail 1 is fixed on the frame 7. The spray gun 3 is mounted on the rotating pull rod 4 and extends into the roller 8. Specifically, the fixed slide rail 1 is fixed on the frame 7 of the coating machine and located above the roller 8. The sliding seat 2 and the rotating pull rod 4 are connected as a whole, and the whole can move back and forth on the fixed slide rail 1. Since the sliding seat 2 and the rotating pull rod 4 are connected by a bearing 6, they can rotate.

[0032] This coating machine is suitable for switching between various rollers 8. In each working state, only one suitable roller 8 needs to be installed inside the coating machine. When changing roller 8, the original roller 8 needs to be removed from the coating machine, and then the suitable roller 8 needs to be moved into the coating machine for installation. Since the operating door device is located at the front end of the roller 8 when changing roller 8, the spray gun 3 and the operating door device need to be pulled out of the equipment and then rotated to the right side of the equipment to ensure that the roller 8 can be smoothly moved in and out (the operating door device and the spray gun 3 are both installed on the rotating pull rod 4).

[0033] The rotating lever 4 of the coating machine can perform linear motion and fixed-direction rotation. There are two automatic balancing positions. The rotating lever 4 will rotate when subjected to external force, and can perform linear and rotational motion in segments. This prevents the spray gun 3, operating door device, cleaning ball, etc. from colliding with the front door when the roller 8 is pulled out, effectively avoiding operator misoperation.

[0034] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A coating machine, characterized in that: The machine includes a frame (7), a roller (8), a spray gun (3), and a coating machine rotating pull rod device. The coating machine rotating pull rod device includes a fixed slide rail (1), a sliding seat (2), and a rotating pull rod (4) for mounting the spray gun (3). The sliding seat (2) is slidably mounted on the fixed slide rail (1), and the rotating pull rod (4) is rotatably mounted on the sliding seat (2). A limiting elastic element (5) for limiting the rotation position of the rotating pull rod (4) is provided between the sliding seat (2) and the rotating pull rod (4). The elastic element (5) can maintain balance when the rotating rod (4) is at the first rotation angle α and the second rotation angle β. The first rotation angle α is the working position of the spray gun (3) inside the drum (8), and the second rotation angle β is the replacement position of the spray gun (3) outside the drum (8) when replacing the drum (8). The drum (8) is mounted on the frame (7), the fixed slide rail (1) is fixed on the frame (7), and the spray gun (3) is mounted on the rotating rod (4) and can extend into the drum (8).

2. The coating machine according to claim 1, characterized in that: The rotating rod (4) is mounted on the sliding seat (2) via a bearing (6).

3. The coating machine according to claim 1, characterized in that: The limiting elastic element (5) is a limiting spring.

4. The coating machine according to any one of claims 1 to 3, characterized in that: The rotating rod (4) is an L-shaped rod, with one end of the L-shaped rod rotatably mounted on the sliding seat (2) and the other end used to install the spray gun (3).

5. The coating machine according to any one of claims 1 to 3, characterized in that: The rotating pull rod (4) is provided with a positioning plate (21), and the positioning plate (21) is provided with a positioning post (22) for limiting the rotating pull rod (4) at the first rotation angle α or the second rotation angle β. One end of the limiting elastic member (5) is connected to the sliding seat (2), and the other end is connected to the positioning post (22).

6. The coating machine according to any one of claims 1 to 3, characterized in that: The fixed slide rail (1) is located above the roller (8).

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