Rice packaging device

Abstract

This invention belongs to the field of packaging technology and relates to a rice packaging device. A transmission device drives a discharging device to discharge rice into a packaging bag mounted on the discharging device. A placement device controls the transmission between the transmission device and the discharging device based on the amount of rice in the packaging bag. The rice to be packaged is fed into the screening box through the inlet and falls onto the screening device. During the fall of the rice, the air inlet blows out light impurities from the impurity outlet. The rice falling onto the screening device is screened, leaving large impurities. The transmission device drives the screening device to discharge the impurities from the screening device through the impurity outlet. The rice that has passed through the screening device is discharged into the packaging bag by the discharging device driven by the transmission device. When the rice in the packaging bag reaches a predetermined weight, the rice bag will be placed to stop the transmission device from discharging rice into the packaging bag. Then, a new packaging bag is replaced and the rice bag on the placement device is removed.

Description

Technical Field

[0001] This invention belongs to the field of packaging technology, and in particular relates to a rice packaging device. Background Technology

[0002] Rice is a finished product made from paddy through cleaning, hulling, milling, and finishing processes. The cleaning process uses suitable equipment, appropriate technological procedures, and proper operating methods to remove various impurities mixed in with the paddy, thereby improving the quality of the finished rice. Magnets are also used to remove iron nails, iron filings, etc., from the paddy to ensure production safety. The hulling process uses a rubber roller huller or a diamond huller to remove the husk from the paddy, separating the husk from the brown rice. The milling process uses a rice milling machine to grind and rub the brown rice, separating the bran and endosperm. Further processing includes brushing, removing bran, removing broken grains, and drying the rice to obtain the desired grade of rice. After hulling, the rice needs to be packaged for better distribution and storage.

[0003] Current packaging methods require manual weighing and filling, which is time-consuming and labor-intensive, and manual weighing has a large margin of error. Summary of the Invention

[0004] The purpose of this invention is to provide a rice packaging device to reduce weighing errors during filling and reduce the physical exertion of workers.

[0005] To achieve the above objectives, the specific technical solution of a rice packaging device of the present invention is as follows:

[0006] A rice packaging device includes a screening box, a feed inlet, an impurity discharge outlet, an air inlet, and a screening device. The screening box has a feed inlet, an impurity discharge outlet, and an air inlet, with the feed inlet and air inlet on one side. The air inlet is equipped with a blower. The feed inlet is connected to a feeding device. The screening box is equipped with a screening device inside for screening rice replenished from the feed inlet. The device is characterized in that the screening box is equipped with a transmission device, a discharge device, and a placement device. The transmission device drives the discharge device to discharge rice into the packaging bag mounted on the discharge device. The placement device controls the transmission between the transmission device and the discharge device according to the amount of rice in the packaging bag.

[0007] Furthermore, the transmission device includes an output shaft and a control output device. The placement device controls the connection between the output shaft and the discharge device through the control output device. The output shaft is equipped with a matching motor, and the output shaft drives the screening device to discharge the screened waste material from the impurity discharge port.

[0008] Furthermore, the control output device includes a moving cylinder, an annular groove, a first sliding groove, a first sliding bar, a connecting rod, a second sliding bar, and a second sliding groove. The moving cylinder has an annular groove and a first sliding groove inside, which are connected. The first sliding bar is mounted on the output shaft and slides inside the annular groove. The moving cylinder slides on the output shaft. The connecting rod is mounted on the moving cylinder and has a second sliding bar on it. The second sliding bar slides inside the second sliding groove. The connecting rod drives the discharge device through the second sliding bar. The moving cylinder is mounted on the placement device through a mounting frame and rotates on the mounting frame.

[0009] Furthermore, the screening device includes a screening plate, a reset device, and a pushing device. The screening plate is set inside the screening box through the reset device, and the output shaft pushes the screening plate upward through the pushing device.

[0010] Furthermore, the reset device includes a mounting plate, a connecting bolt, and a first spring. The mounting plate is disposed inside the screening box, the connecting bolt slides on the mounting plate, the screening plate is disposed on the connecting bolt, and the first spring is provided between the mounting plate and the connecting bolt.

[0011] Furthermore, the pushing device includes a mounting base, an arc-shaped groove, a pushing block, a pushing rod, and a pushing ball. The mounting base is disposed on the screening plate, the arc-shaped groove is disposed on the mounting base, the pushing block is disposed on the mounting base, the pushing rod is disposed on the output shaft, and the pushing rod is provided with a pushing ball.

[0012] Furthermore, the discharge device includes a connecting pipe, a discharge nozzle, a rotating rod, and a spiral plate. The discharge nozzle is connected to the screening box through the connecting pipe. The rotating rod is rotatably mounted inside the discharge nozzle through a mounting frame. The spiral plate is mounted on the rotating rod. A second sliding groove is provided inside the rotating rod. A placement device is provided on the connecting pipe.

[0013] Furthermore, the placement device includes a fixed column, a movable rod, a weighing device, and a placement tray. The fixed column is mounted on a connecting pipe, the weighing device is mounted on the movable rod, and the movable rod slides inside the fixed column via the weighing device. The weighing device is equipped with a placement tray for supporting the packaging bag, and the movable cylinder is mounted on the movable rod via a mounting bracket.

[0014] Furthermore, the weighing device includes a sliding mounting groove, a sliding block, a sliding cavity, a movable support plate, a second spring, a limiting ball, an adjusting screw, an adjusting cone, a limiting ball groove, and a return spring. The sliding mounting groove is disposed inside the fixed column, and the sliding block slides inside the sliding mounting groove. The sliding block is disposed on the movable rod, and the sliding block has a sliding cavity inside for the sliding of the movable support plate and the limiting ball. A second spring is disposed between the movable support plate and the limiting ball. The adjusting screw is disposed inside the movable rod, and the adjusting screw drives the adjusting cone to move and compress the movable support plate to adjust the tension of the second spring. A return spring is disposed between the sliding block and the sliding mounting groove. The limiting ball groove is disposed inside the fixed column and communicates with the sliding mounting groove.

[0015] The advantages of this invention are:

[0016] This invention allows rice to be packaged to fall into a screening box through an inlet and onto a screening device. As the rice falls, an air inlet blows out light impurities from the impurity outlet. The rice on the screening device is then sieved, leaving larger impurities. A transmission device drives the screening device to discharge the impurities from the outlet. The rice that has passed through the screening device is then discharged into a packaging bag by a discharge device driven by the transmission device. When the rice in the packaging bag reaches a predetermined weight, the rice bag is placed to stop the transmission device from discharging rice into the packaging bag. After a new packaging bag is installed, the rice bag is removed from the placement device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0019] Figure 3 This is a partial structural diagram of the present invention;

[0020] Figure 4 This is a partial structural cross-sectional view of the present invention;

[0021] Figure 5 for Figure 4 Schematic diagram A (partial enlargement);

[0022] Figure 6 for Figure 4 Detailed enlarged diagram B;

[0023] Figure 7 for Figure 4 Schematic diagram C (partially enlarged);

[0024] Figure 8 for Figure 4 Enlarged view of part D;

[0025] Figure 9 This is a schematic diagram of the pushing device structure of the present invention;

[0026] Explanation of markings in the diagram:

[0027] Screening box 1; Feed inlet 2; Impurity outlet 3; Air inlet 4; Transmission device 5; Output shaft 5-1; Control output device 5-2; Moving cylinder 5-2-1; Annular groove 5-2-2; First sliding groove 5-2-3; First sliding bar 5-2-4; Connecting rod 5-2-5; Second sliding bar 5-2-6; Second sliding groove 5-2-7; Screening device 6; Screening plate 6-1; Reset device 6-2; Mounting plate 6-2-1; Connecting bolt 6-2-2; First spring 6-2-3; Pushing device 6-3; Mounting base 6-3-1; Arc groove 6-3-2; Pushing Block 6-3-3; Push rod 6-3-4; Push ball 6-3-5; Discharge device 7; Connecting pipe 7-1; Discharge nozzle 7-2; Rotating rod 7-3; Spiral plate 7-4; Placement device 8; Fixed column 8-1; Moving rod 8-2; Weighing device 8-3; Sliding mounting groove 8-3-1; Sliding block 8-3-2; Sliding cavity 8-3-3; Moving support plate 8-3-4; Second spring 8-3-5; Restricting ball 8-3-6; Adjusting screw 8-3-7; Adjusting cone 8-3-8; Restricting ball groove 8-3-9; Reset spring 8-3-10; Placement plate 8-4. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] like Figure 1-8As shown, a rice packaging device includes a screening box 1, a feed inlet 2, an impurity discharge outlet 3, an air inlet 4, and a screening device 6. The screening box 1 is provided with the feed inlet 2, the impurity discharge outlet 3, and the air inlet 4, which are located on one side. The air inlet 4 is equipped with a blower. The feed inlet 2 is connected to a feeding device. The screening box 1 is equipped with a screening device 6 inside for screening the rice replenished by the feed inlet 2. The device is characterized in that the screening box 1 is provided with a transmission device 5, a discharge device 7, and a placement device 8. The transmission device 5 drives the discharge device 7 to discharge rice into the packaging bag mounted on the discharge device 7. The placement device 8 controls the transmission between the transmission device 5 and the discharge device 7 according to the amount of rice in the packaging bag.

[0031] After rice to be packaged is put into the screening box 1 through the feed inlet 2, it falls onto the screening device 6. During the fall of the rice, the air inlet 4 blows out light impurities from the impurity outlet 3. The rice falling onto the screening device 6 is screened, leaving large impurities. The transmission device 5 drives the screening device 6 to discharge the impurities from the screening device 6 through the impurity outlet 3. The rice that has passed through the screening device 6 is discharged into the packaging bag by the discharge device 7 driven by the transmission device 5. When the rice inside the packaging bag reaches the predetermined weight, the rice bag will be driven by the placement device 8 to stop the transmission device 5 from discharging rice into the packaging bag. Then, after replacing the packaging bag, the rice bag on the placement device 8 is removed.

[0032] Among them, such as Figure 1-8 As shown, the transmission device 5 includes an output shaft 5-1 and a control output device 5-2. The placement device 8 is connected to the output shaft 5-1 and the discharge device 7 through the control output device 5-2. The output shaft 5-1 is equipped with a matching motor. The output shaft 5-1 drives the screening device 6 to discharge the screened waste material from the impurity discharge port 3.

[0033] Among them, such as Figure 1-8As shown, the control output device 5-2 includes a movable cylinder 5-2-1, an annular groove 5-2-2, a first sliding groove 5-2-3, a first sliding bar 5-2-4, a connecting rod 5-2-5, a second sliding bar 5-2-6, and a second sliding groove 5-2-7. The movable cylinder 5-2-1 has an annular groove 5-2-2 and a first sliding groove 5-2-3 inside, and the annular groove 5-2-2 and the first sliding groove 5-2-3 are connected. The first sliding bar 5-2-4 is mounted on the output shaft 5-1. 2-4 slides inside the annular groove 5-2-2, the movable cylinder 5-2-1 slides on the output shaft 5-1, the connecting rod 5-2-5 is set on the movable cylinder 5-2-1, the connecting rod 5-2-5 is provided with a second sliding strip 5-2-6, the second sliding strip 5-2-6 slides inside the second sliding groove 5-2-7, the connecting rod 5-2-5 drives the discharge device 7 through the second sliding strip 5-2-6, the movable cylinder 5-2-1 is set on the placement device 8 through the mounting frame, and the movable cylinder 5-2-1 rotates on the mounting frame.

[0034] The motor drives the first sliding bar 5-2-4 to rotate via the output shaft 5-1. The first sliding bar 5-2-4 and the first sliding groove 5-2-3 work together to drive the moving cylinder 5-2-1 to rotate. When the first sliding bar 5-2-4 moves to the position of the annular groove 5-2-2, the output shaft 5-1 no longer drives the moving cylinder 5-2-1 to rotate. The rotating moving cylinder 5-2-1 drives the connecting rod 5-2-5 to rotate. The connecting rod 5-2-5 drives the discharge device 7 to discharge rice via the second sliding bar 5-2-6.

[0035] Among them, such as Figure 1-8 As shown, the screening device 6 includes a screening plate 6-1, a reset device 6-2, and a pushing device 6-3. The screening plate 6-1 is set inside the screening box 1 through the reset device 6-2, and the output shaft 5-1 pushes the screening plate 6-1 upward through the pushing device 6-3.

[0036] The rotating output shaft 5-1 pushes the screening plate 6-1 upward through the pushing device 6-3, so that the screening plate 6-1 and the impurity discharge port 3 are opposite each other and the impurities are discharged. Then the reset device 6-2 pulls the screening plate 6-1 downward and separates it from the impurity discharge port 3.

[0037] Among them, such as Figure 1-8 As shown, the reset device 6-2 includes a mounting plate 6-2-1, a connecting bolt 6-2-2, and a first spring 6-2-3. The mounting plate 6-2-1 is disposed inside the screening box 1, the connecting bolt 6-2-2 slides on the mounting plate 6-2-1, the screening plate 6-1 is disposed on the connecting bolt 6-2-2, and the first spring 6-2-3 is provided between the mounting plate 6-2-1 and the connecting bolt 6-2-2.

[0038] When the screening plate 6-1 moves upward, the screening plate 6-1 drives the connecting bolt 6-2-2 to compress the first spring 6-2-3.

[0039] Among them, such as Figure 1-8 As shown, the pushing device 6-3 includes a mounting base 6-3-1, an arc-shaped groove 6-3-2, a pushing block 6-3-3, a pushing rod 6-3-4, and a pushing ball 6-3-5. The mounting base 6-3-1 is mounted on the screening plate 6-1, the arc-shaped groove 6-3-2 is mounted on the mounting base 6-3-1, the pushing block 6-3-3 is mounted on the mounting base 6-3-1, the pushing rod 6-3-4 is mounted on the output shaft 5-1, and the pushing rod 6-3-4 is provided with the pushing ball 6-3-5.

[0040] The output shaft 5-1 drives the push rod 6-3-4 to rotate. When the push rod 6-3-4 drives the push ball 6-3-5 to rotate to the position of the push block 6-3-3, it will push the push block 6-3-3 upward. The push block 6-3-3 drives the screening plate 6-1 to move upward through the mounting base 6-3-1.

[0041] Among them, such as Figure 1-8 As shown, the discharge device 7 includes a connecting pipe 7-1, a discharge nozzle 7-2, a rotating rod 7-3, and a spiral plate 7-4. The discharge nozzle 7-2 is connected to the screening box 1 through the connecting pipe 7-1. The rotating rod 7-3 is rotatably mounted inside the discharge nozzle 7-2 through a mounting bracket. The spiral plate 7-4 is mounted on the rotating rod 7-3. The rotating rod 7-3 has a second sliding groove 5-2-7 inside. The connecting pipe 7-1 is equipped with a placement device 8.

[0042] The rotating connecting rod 5-2-5 drives the rotating rod 7-3 to rotate via the second sliding bar 5-2-6, and the rotating rod 7-3 drives the spiral plate 7-4 to rotate to discharge rice.

[0043] Among them, such as Figure 1-8 As shown, the placement device 8 includes a fixed column 8-1, a movable rod 8-2, a weighing device 8-3, and a placement tray 8-4. The fixed column 8-1 is mounted on the connecting pipe 7-1, and the weighing device 8-3 is mounted on the movable rod 8-2. The movable rod 8-2 slides inside the fixed column 8-1 via the weighing device 8-3. The weighing device 8-3 is provided with a placement tray 8-4 for supporting the packaging bag. The movable cylinder 5-2-1 is mounted on the movable rod 8-2 via a mounting bracket.

[0044] Once the weight of the rice in the rice bag on the placement plate 8-4 reaches the predetermined amount, the weighing device 8-3 will drive the moving rod 8-2, the placement plate 8-4, and the rice bag to move downwards. The moving rod 8-2 will drive the moving cylinder 5-2-1 to move, causing the annular groove 5-2-2 inside the moving cylinder 5-2-1 to move to the position of the first sliding bar 5-2-4, thus disconnecting the transmission between the output shaft 5-1 and the moving cylinder 5-2-1.

[0045] Among them, such as Figure 1-8 As shown, the weighing device 8-3 includes a sliding mounting groove 8-3-1, a sliding block 8-3-2, a sliding cavity 8-3-3, a movable support plate 8-3-4, a second spring 8-3-5, a limiting ball 8-3-6, an adjusting screw 8-3-7, an adjusting cone 8-3-8, a limiting ball groove 8-3-9, and a return spring 8-3-10. The sliding mounting groove 8-3-1 is disposed inside the fixed column 8-1. The sliding block 8-3-2 slides inside the sliding mounting groove 8-3-1. The sliding block 8-3-2 is disposed on the moving rod 8-2. The sliding block 8-3-2 has a mechanism for moving the weight. The sliding cavity 8-3-3 of the movable support plate 8-3-4 and the limiting ball 8-3-6 is provided. A second spring 8-3-5 is provided between the movable support plate 8-3-4 and the limiting ball 8-3-6. The adjusting screw 8-3-7 is provided inside the moving rod 8-2. The adjusting screw 8-3-7 drives the adjusting cone 8-3-8 to move and squeeze the movable support plate 8-3-4 to adjust the tension of the second spring 8-3-5. A reset spring 8-3-10 is provided between the sliding block 8-3-2 and the sliding mounting groove 8-3-1. The limiting ball groove 8-3-9 is provided inside the fixed column 8-1 and communicates with the sliding mounting groove 8-3-1.

[0046] When the rice in the rice bag reaches the predetermined amount, the force exerted by the second spring 8-3-5 on the limiting ball groove 8-3-9 through the limiting ball 8-3-6 and the force of the return spring 8-3-10 can no longer support the weight of the rice. The limiting ball 8-3-6 will then compress the second spring 8-3-5 and retract it into the sliding mounting groove 8-3-1. Then, the sliding block 8-3-2 will move downward inside the sliding mounting groove 8-3-1. The moving sliding block 8-3-2 drives the placement plate 8-4 to move through the moving rod 8-2. It can also drive the adjusting cone 8-3-8 to move by rotating the adjusting screw 8-3-7, which compresses the moving tray 8-3-4 and changes the compression of the second spring 8-3-5, thereby changing the load-bearing capacity of the placement plate 8-4 and thus changing the amount of rice filled in the rice bag.

[0047] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A rice packaging device, comprising a screening box (1), a feed inlet (2), an impurity discharge outlet (3), an air inlet (4), and a screening device (6), wherein the screening box (1) is provided with a feed inlet (2), an impurity discharge outlet (3), and an air inlet (4), the feed inlet (2) and the air inlet (4) are on one side, the air inlet (4) is provided with a blower, the feed inlet (2) is connected to a feeding device, and the screening box (1) is provided with a screening device (6) inside for screening the rice replenished by the feed inlet (2), characterized in that, The screening box (1) is equipped with a transmission device (5), a discharge device (7) and a placement device (8). The transmission device (5) drives the discharge device (7) to discharge rice into the packaging bag set on the discharge device (7). The placement device (8) controls the transmission between the transmission device (5) and the discharge device (7) according to the amount of rice in the packaging bag. The transmission device (5) includes an output shaft (5-1) and a control output device (5-2). The placement device (8) controls the connection between the output shaft (5-1) and the discharge device (7) through the control output device (5-2). The output shaft (5-1) is equipped with a matching motor. The output shaft (5-1) drives the screening device (6) to discharge the screened waste material from the impurity discharge port (3). The control output device (5-2) includes a movable cylinder (5-2-1), an annular groove (5-2-2), a first sliding groove (5-2-3), a first sliding bar (5-2-4), a connecting rod (5-2-5), a second sliding bar (5-2-6), and a second sliding groove (5-2-7). The movable cylinder (5-2-1) has an annular groove (5-2-2) and a first sliding groove (5-2-3) inside, and the annular groove (5-2-2) and the first sliding groove (5-2-3) are connected. The first sliding bar (5-2-4) is mounted on the output shaft (5-1). 4) The moving cylinder (5-2-1) slides inside the annular groove (5-2-2), slides on the output shaft (5-1), the connecting rod (5-2-5) is set on the moving cylinder (5-2-1), the connecting rod (5-2-5) is provided with a second sliding bar (5-2-6), the second sliding bar (5-2-6) slides inside the second sliding groove (5-2-7), the connecting rod (5-2-5) drives the discharge device (7) through the second sliding bar (5-2-6), the moving cylinder (5-2-1) is set on the placement device (8) through the mounting frame, and the moving cylinder (5-2-1) rotates on the mounting frame; The screening device (6) includes a pushing device (6-3), and the output shaft (5-1) pushes the screening plate (6-1) upward through the pushing device (6-3); The discharge device (7) includes a connecting pipe (7-1), a discharge nozzle (7-2), a rotating rod (7-3), and a spiral plate (7-4). The rotating rod (7-3) is provided with a second sliding groove (5-2-7). The placement device (8) includes a fixed column (8-1), a movable rod (8-2), a weighing device (8-3), and a placement tray (8-4). The fixed column (8-1) is mounted on the connecting pipe (7-1), the weighing device (8-3) is mounted on the movable rod (8-2), and the movable rod (8-2) slides inside the fixed column (8-1) via the weighing device (8-3). The weighing device (8-3) is provided with a placement tray (8-4) for supporting the packaging bag, and the movable cylinder (5-2-1) is mounted on the movable rod (8-2) via a mounting bracket.

2. The rice packaging device according to claim 1, characterized in that, The screening device (6) also includes a reset device (6-2), and the screening plate (6-1) is set inside the screening box (1) through the reset device (6-2).

3. A rice packaging device according to claim 2, characterized in that, The reset device (6-2) includes a mounting plate (6-2-1), a connecting bolt (6-2-2), and a first spring (6-2-3). The mounting plate (6-2-1) is disposed inside the screening box (1), the connecting bolt (6-2-2) slides on the mounting plate (6-2-1), the screening plate (6-1) is disposed on the connecting bolt (6-2-2), and the first spring (6-2-3) is provided between the mounting plate (6-2-1) and the connecting bolt (6-2-2).

4. A rice packaging device according to claim 2, characterized in that, The pushing device (6-3) includes a mounting base (6-3-1), an arc-shaped groove (6-3-2), a pushing block (6-3-3), a pushing rod (6-3-4), and a pushing ball (6-3-5). The mounting base (6-3-1) is mounted on the screening plate (6-1), the arc-shaped groove (6-3-2) is mounted on the mounting base (6-3-1), the pushing block (6-3-3) is mounted on the mounting base (6-3-1), the pushing rod (6-3-4) is mounted on the output shaft (5-1), and the pushing rod (6-3-4) is provided with a pushing ball (6-3-5).

5. A rice packaging device according to claim 1, characterized in that, The discharge nozzle (7-2) is connected to the screening box (1) through the connecting pipe (7-1). The rotating rod (7-3) is rotatably set inside the discharge nozzle (7-2) through the mounting frame. The spiral plate (7-4) is set on the rotating rod (7-3). The connecting pipe (7-1) is provided with a placement device (8).

6. A rice packaging device according to claim 1, characterized in that, The weighing device (8-3) includes a sliding mounting groove (8-3-1), a sliding block (8-3-2), a sliding cavity (8-3-3), a movable support plate (8-3-4), a second spring (8-3-5), a limiting ball (8-3-6), an adjusting screw (8-3-7), an adjusting cone (8-3-8), a limiting ball groove (8-3-9), and a return spring (8-3-10). The sliding mounting groove (8-3-1) is located inside the fixed column (8-1), and the sliding block (8-3-2) slides inside the sliding mounting groove (8-3-1). The sliding block (8-3-2) is mounted on the moving rod (8-2), and the sliding block (8-3-2) has a mechanism for moving the support plate. The sliding cavity (8-3-3) between the plate (8-3-4) and the limiting ball (8-3-6) is provided. A second spring (8-3-5) is provided between the movable support plate (8-3-4) and the limiting ball (8-3-6). An adjusting screw (8-3-7) is provided inside the moving rod (8-2). The adjusting screw (8-3-7) drives the adjusting cone (8-3-8) to move and squeeze the movable support plate (8-3-4) to adjust the tension of the second spring (8-3-5). A reset spring (8-3-10) is provided between the sliding block (8-3-2) and the sliding mounting groove (8-3-1). The limiting ball groove (8-3-9) is provided inside the fixed column (8-1) and communicates with the sliding mounting groove (8-3-1).

Images