Linear motor device and pellet counting machine

Abstract

The present invention discloses a linear motor device comprising a coil, a mover, and a housing with a through hole. The coil is disposed within the housing, and the mover slides within the coil with one end extending out of the housing through the through hole. The other end of the mover is provided with a mover stroke gauge located above the coil. A guide rail and a reading mechanism for reading the mover stroke gauge are provided within the housing above the coil. The mover stroke gauge slides on the guide rail. A sensor for determining the mover displacement zero point is provided below the coil. A pellet counting machine is also disclosed, comprising a pellet counting head having a plurality of parallel pellet counting channels, each of which is provided with a valve. A row of the aforementioned linear motor devices is provided outside the pellet counting head, each valve being connected to a correspondingly extending end of the mover of each linear motor device. This linear motor device has a reasonable layout and occupies a small space. This pellet counting machine is stable, not susceptible to dust interference, has a fast response, and is not prone to pill jamming.

Description

Technical Field

[0001] The present invention relates to the technical field of food and medicine packaging machinery and equipment, in particular to a linear motor device and a tablet counting machine. Background Art

[0002] Existing pellet counters mostly use pneumatic cylinders for opening and closing the material doors. These mechanisms are unstable, susceptible to dust interference, shortening their lifespan, slow response, prone to pill jamming, and lacking anti-collision features, impacting both pellet counting accuracy and production efficiency. Some use linear motors, but these are often poorly arranged, making it difficult to arrange multiple linear motors side by side and requiring significant space. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a linear motor device with a reasonable layout and small space occupation; it also discloses a pill counting machine with good stability, not easily disturbed by dust, fast response and not prone to pill jamming.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A linear motor device includes a coil, a mover, and a shell with a through hole. The coil is arranged in the shell, the mover is slidably arranged in the coil and one end extends out of the shell through the through hole. The other end of the mover is provided with a mover stroke measuring tool located above the coil. A guide rail and a reading mechanism for reading the mover stroke measuring tool data are provided in the shell above the coil. The mover stroke measuring tool is slidably arranged on the guide rail. The shell is provided with a sensor for determining the mover displacement zero point below the coil.

[0006] As a further improvement of the above technical solution:

[0007] The mover stroke measuring tool includes a magnetic scale and a clamping block. One end of the magnetic scale is slidably arranged on the guide rail, and the other end is fixedly connected to the inner end of the mover through the clamping block. The reading mechanism is located on the upper side of the magnetic scale.

[0008] The reading mechanism includes a mounting frame and a reading head. The mounting frame is mounted on the housing. The reading head is mounted on the mounting frame and is located on the upper side of the magnetic scale.

[0009] An installation chamber is provided on the top surface of the shell, and an installation opening for the installation rack to enter and exit is provided on one side of the installation chamber. The installation rack is placed in the installation chamber, and a detachable side panel is provided on one side of the shell. The side panel cover is provided at the installation opening and pressed against the installation rack.

[0010] An anti-collision block is provided on the holding block.

[0011] The mover is parallel to the guide rail.

[0012] The coil is arranged close to the through hole.

[0013] An anti-collision piece is provided at the inner end of the mover.

[0014] The outer shell of the mover is provided with an epoxy tube.

[0015] A grain counting machine includes a grain counting head, wherein the grain counting head is provided with a plurality of parallel grain counting channels, each of the grain counting channels is provided with a valve, and a row of the above-mentioned linear motor devices is provided on the outside of the grain counting head, and each of the valves is connected to the protruding end of the mover of each linear motor device in a one-to-one correspondence.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The linear motor device of the present invention has the following working process: after the coil is energized, a magnetic field is generated. Under the action of the magnetic field, the mover slides linearly along the guide rail. The mover stroke measuring tool slides linearly along the guide rail with the mover. The reading mechanism reads the sliding position of the mover stroke measuring tool, thereby reflecting the sliding position of the mover. The sensor is used to determine the zero point of the mover displacement. If there is no sensor, the motor is reset by repeatedly hitting the rear end wall of the housing and detecting the current change in the coil to determine the motor origin. If a sensor is provided, there is no need to repeatedly hit the end wall, and it is sufficient to directly retreat once, which is equivalent to assisting in determining the position of the mover. The sensor is a Hall sensor. The linear motor device has a reasonable layout and occupies a small space.

[0018] In the present invention's tablet counting machine, the linear motors can be arranged side by side, corresponding one-to-one with the parallel counting channels, meeting the tablet counting machine's layout requirements. Furthermore, the valves are opened and closed by the linear motor actuators, resulting in excellent stability, resistance to dust interference, fast response, and resistance to tablet jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the linear motor device of the present invention.

[0020] Figure 2 It is a schematic cross-sectional structural diagram of the linear motor device of the present invention.

[0021] Figure 3 It is a front view of the linear motor device of the present invention.

[0022] Figure 4 It is a top view of the linear motor device of the present invention.

[0023] Figure 5 It is a rear view of the linear motor device of the present invention.

[0024] Figure 6 It is a side view of the linear motor device of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the pellet counting machine of the present invention.

[0026] Figure 8 It is a schematic cross-sectional view of the pellet counting machine of the present invention (with the valve in an open state).

[0027] Figure 9 It is a schematic cross-sectional view of the pellet counting machine of the present invention (the valve is in a closed state).

[0028] The numbers in the figure represent:

[0029] 1. Housing; 11. Through hole; 12. Mounting chamber; 121. Mounting port; 13. Side panel; 2. Coil; 3. Mover; 31. Anti-collision member; 32. Epoxy tube; 4. Hall sensor; 5. Reading mechanism; 51. Mounting bracket; 52. Reading head; 6. Guide rail; 7. Mover stroke gauge; 71. Magnetic scale; 72. Clamping block; 721. Anti-collision block; 8. Counting head; 81. Counting channel; 9. Valve. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1:

[0032] Figures 1 to 6 An embodiment of a linear motor device of the present invention is shown, which includes a coil 2, a mover 3 and a housing 1 with a through hole 11. The coil 2 is arranged in the housing 1, and the mover 3 is slidably arranged in the coil 2 and one end extends out of the housing 1 through the through hole 11. The other end of the mover 3 is provided with a mover stroke measuring tool 7 located above the coil 2. A guide rail 6 and a reading mechanism 5 for reading the data of the mover stroke measuring tool 7 are provided in the housing 1 above the coil 2. The mover stroke measuring tool 7 is slidably arranged on the mover guide rail 6. The housing 1 is provided with a sensor 4 for determining the displacement zero point of the mover 3 below the coil 2.

[0033] Working process: After the coil 2 is energized, a magnetic field is generated. Under the action of the magnetic field, the mover 3 slides linearly along the guide rail 6. The mover stroke measuring tool 7 slides linearly along the guide rail 6 with the mover 3. The reading mechanism 5 reads the sliding position of the mover stroke measuring tool 7, thereby reflecting the sliding position of the mover 3. Sensor 4 is used to determine the zero point of the displacement of the mover 3. If there is no sensor 4, the motor is reset by repeatedly hitting the rear end wall of the housing 1 and detecting the current change in the coil 2 to determine the motor origin. If sensor 4 is set, there is no need to repeatedly hit the end wall, and you can just retreat once, which is equivalent to assisting in determining the position of the mover 3. Sensor 4 is a Hall sensor. The linear motor device has a reasonable layout and occupies a small space.

[0034] In this embodiment, Figure 2As shown, the mover stroke measuring instrument 7 includes a magnetic scale 71 and a clamping block 72. One end of the magnetic scale 71 slides on the guide rail 6, and the other end is fixedly connected to the inner end of the mover 3 via the clamping block 72. The reading mechanism 5 is located above the magnetic scale 71. Specifically, the housing 1 is square in shape, and the reading mechanism 5 is located above the housing 1. This does not affect the horizontal side-by-side arrangement of the linear motor devices, resulting in a simple structure and facilitating the side-by-side layout of the linear motor devices.

[0035] In this embodiment, Figure 1 and Figure 2 As shown, the reading mechanism 5 includes a mounting frame 51 and a reading head 52. The mounting frame 51 is mounted on the housing 1, and the reading head 52 is mounted on the mounting frame 51 and located on the upper side of the magnetic scale 71. Specifically, the mounting frame 51 is mounted on the upper side of the housing 1, and the reading head 52 is mounted on the mounting frame 51.

[0036] In this embodiment, Figures 1 to 3 As shown, the top surface of the housing 1 is provided with a mounting chamber 12. A mounting opening 121 is provided on one side of the housing 12 for the mounting bracket 51 to enter and exit. The mounting bracket 51 is placed within the mounting chamber 12. A removable side panel 13 is provided on one side of the housing 1. The side panel 13 covers the mounting opening 121 and abuts against the mounting bracket 51. To replace the reading head 52, the side panel 13 is removed, the mounting bracket 51 and the reading head 52 are removed from the mounting opening 121, and the new reading head 52 is replaced. The new reading head 52 is then inserted into the mounting chamber 12 through the mounting opening 121 and the side panel 13 is replaced. This simple structure allows for easy assembly and disassembly.

[0037] In this embodiment, Figure 1 As shown, an anti-collision block 721 is provided on the holding block 72. Specifically, the anti-collision block 721 is made of a flexible material, such as a rubber block, to prevent the holding block 72 from rigidly colliding with the housing 1.

[0038] In this embodiment, the mover 3 is parallel to the guide rail 6. Both the mover 3 and the guide rail 6 extend along the length of the housing 1. The coil 2 is positioned adjacent to a through hole 11. Through hole 11 is provided on an end wall of the housing 1. A sliding bearing is provided between the inner wall of through hole 11 and the mover 3.

[0039] In this embodiment, an anti-collision member 31 is provided at the inner end of the mover 3. Specifically, the anti-collision member 31 is made of a flexible material, such as rubber, to prevent the anti-collision member 31 from rigidly colliding with the housing 1. An epoxy tube 32 is provided on the outer shell of the mover 3.

[0040] Example 2:

[0041] Figures 7 to 9An embodiment of the present tablet counting machine is shown. This machine includes a counting head 8, which is provided with multiple parallel counting channels 81. Each channel 81 is equipped with a valve 9. A row of linear motor devices, as described in Example 1, are located outside the counting head 8. Each valve 9 is connected to the extended end of the mover 3 of each linear motor device in a one-to-one correspondence. The linear motor devices can be arranged side by side, corresponding one-to-one with the parallel counting channels 81, meeting the layout requirements of the tablet counting machine. Furthermore, the valves 9 are driven to open and close by the movers 3 of the linear motor devices, resulting in excellent stability, resistance to dust interference, fast response, and resistance to tablet jamming.

[0042] Specifically, magnetic isolation sheets are provided between adjacent housings 1 to prevent magnetic interference between the linear motor devices.

[0043] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A grain counting machine, comprising a grain counting head (8), wherein the grain counting head (8) is provided with a plurality of parallel grain counting channels (81), each of the grain counting channels (81) is provided with a valve (9), characterized in that: A row of linear motor devices is provided on the outside of the counting head (8), and the linear motor device comprises a coil (2), a mover (3) and a housing (1) with a through hole (11). The coil (2) is provided in the housing (1), the mover (3) is slidably provided in the coil (2) and one end of the mover passes through the through hole (11) and extends out of the housing (1). The other end of the mover (3) is provided with a mover stroke measuring tool (7) located above the coil (2). A guide rail (6) and a reading mechanism (5) for reading data of the mover stroke measuring tool (7) are provided in the housing (1) above the coil (2). ), the mover stroke measuring tool (7) is slidably mounted on the guide rail (6), the housing (1) is provided with a sensor (4) for determining the displacement zero point of the mover (3) below the coil (2), the mover stroke measuring tool (7) comprises a magnetic scale (71) and a clamping block (72), one end of the magnetic scale (71) is slidably mounted on the guide rail (6), and the other end is fixedly connected to the inner end of the mover (3) through the clamping block (72), the reading mechanism (5) is located on the upper side of the magnetic scale (71), and each of the valves (9) is connected to the protruding end of the mover (3) of each linear motor device in a one-to-one correspondence.

2. The counting machine according to claim 1, characterized in that: The reading mechanism (5) comprises a mounting frame (51) and a reading head (52), wherein the mounting frame (51) is mounted on the housing (1), and the reading head (52) is mounted on the mounting frame (51) and is located on the upper side of the magnetic scale (71).

3. The counting machine according to claim 2, characterized in that: An installation chamber (12) is provided on the top surface of the housing (1), and an installation opening (121) for the installation frame (51) to enter and exit is provided on one side of the installation chamber (12). The installation frame (51) is placed in the installation chamber (12). A detachable side panel (13) is provided on one side of the housing (1), and the side panel (13) is covered at the installation opening (121) and pressed against the installation frame (51).

4. The counting machine according to claim 2, characterized in that: An anti-collision block (721) is provided on the holding block (72).

5. The counting machine according to claim 1, characterized in that: The mover (3) is parallel to the guide rail (6).

6. The counting machine according to claim 1, characterized in that: The coil (2) is arranged close to the through hole (11).

7. The counting machine according to claim 1, characterized in that: An anti-collision member (31) is provided at the inner end of the mover (3).

8. The counting machine according to any one of claims 1 to 7, characterized in that: The outer shell of the mover (3) is provided with an epoxy tube (32).

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