A blanking mechanism of a packaging machine

Abstract

The utility model discloses a kind of discharging mechanism of packing machine, including discharging hopper, the bottom of the discharging hopper is provided with discharging port, the bottom of the discharging hopper is provided with the first bottom plate for shielding the position of the discharging port and the second bottom plate for opening and closing the discharging port, the second bottom plate is movably connected with the first bottom plate, rotatable pusher assembly is arranged in the bottom of the discharging hopper, the pusher assembly includes first pusher plate and the rotating portion fixed with the first pusher plate, the rotating portion is arranged on the central position of the first bottom plate corresponding the bottom of the discharging hopper, the bottom of the discharging hopper is provided with driving motor for driving the rotating portion rotation in the position corresponding the rotating portion.The utility model discloses a kind of discharging mechanism of packing machine, can adjust the size of discharging port and the size of discharging according to the size of material, improve the working efficiency of packing machine.

Description

Technical Field

[0001] This utility model relates to the field of feeding mechanism technology, specifically to a feeding mechanism for a packaging machine. Background Technology

[0002] In order to facilitate tea brewing and storage and to make the packaging more aesthetically pleasing, most domestic tea packaging adopts small bag packaging. As a type of packaging machine, most of the popular tea packaging machines on the market can realize automated tea packaging.

[0003] A typical tea packaging machine includes a feeding mechanism, a vibrating feeding mechanism, a weighing mechanism, and a packaging mechanism. The tea leaves are fed into the vibrating feeding mechanism below, and then vibrated and fed into the weighing mechanism for weighing before being packaged. Most existing feeding mechanisms use vibrating feeding or conveyor belt feeding. However, because tea varieties vary in size and weight, while the size of the feeding opening is fixed, the amount of tea leaves fed is difficult to control. Furthermore, the vibrating feeding mechanism and the weighing mechanism require a certain amount of time to coordinate and complete the weighing. This can easily lead to situations where the feeding speed is too slow, causing material to accumulate in the feeding hopper, or too fast, causing material to accumulate in the vibrating plate of the vibrating feeding mechanism, thus affecting the normal operation of the packaging machine. Utility Model Content

[0004] The purpose of this invention is to provide a feeding mechanism for a packaging machine that can adjust the size of the feeding opening and the feeding amount according to the size of the material, thereby improving the working efficiency of the packaging machine.

[0005] To achieve the above objectives, the solution of this utility model is: A feeding mechanism for a packaging machine includes a feeding hopper with a feeding port at its bottom. A first bottom plate for blocking the feeding port and a second bottom plate for opening and closing the feeding port are disposed at the bottom of the feeding hopper corresponding to the feeding port. The first bottom plate is fixed to the bottom of the feeding hopper, and the second bottom plate is movably connected to the first bottom plate. A rotatable pushing assembly is disposed inside the bottom of the feeding hopper. The pushing assembly includes a first pushing plate and a rotating part fixed to the first pushing plate. The rotating part is disposed at the center of the first bottom plate corresponding to the bottom of the feeding hopper. A drive motor for driving the rotating part to rotate is disposed at the bottom of the feeding hopper corresponding to the rotating part. The output shaft of the drive motor is connected to the rotating part. One end of the first pushing plate is fixedly connected to the rotating part, and the other end of the first pushing plate extends towards the inner wall of the feeding hopper. A first pushing element is disposed on the first pushing plate. The first pusher is provided with an extension at the end away from the rotating part to push the material on the side wall of the hopper toward the discharge port, and the bottom of the first base plate is provided with a fixing member for fixing the drive motor.

[0006] The first pusher plate is connected to the first L-shaped plate, and the first pusher component is sandwiched between the first pusher plate and the first L-shaped plate. The first pusher component is a soft silicone sheet or a soft brush.

[0007] The pushing assembly further includes a second pushing plate fixed to the rotating part. One end of the second pushing plate is fixedly connected to the rotating part, and the other end of the second pushing plate extends toward the inner wall of the hopper. The length of the second pushing plate is less than the length of the first pushing plate, and the end of the second pushing plate away from the rotating part is less than the distance between the rotating part and the inner wall of the hopper. Taking the rotation direction of the first pushing plate and the second pushing plate as the front, the angle between the second pushing plate and the tangent direction of the rotating part is an obtuse angle, so that the second pushing plate pushes the material in the bottom of the hopper toward the end of the discharge port away from the rotating part.

[0008] The second pusher plate is connected to the second L-shaped plate, and a second pusher component is sandwiched between the second pusher plate and the second L-shaped plate. The second pusher component is a soft silicone sheet or a soft brush.

[0009] The first pusher plate and the second pusher plate are respectively inclined forward from bottom to top inside the feeding hopper.

[0010] The fixing component includes a fixing plate, which has a first extension arm and a second extension arm arranged vertically. The fixing plate is fixed below the first base plate. A fixing collar is provided at the end of the first extension arm that is away from the fixing plate. The drive motor is fixed at the bottom of the second extension arm.

[0011] The discharge port is a circular discharge port, the first base plate is a base plate with a fan-shaped notch, the second base plate is a fan-shaped base plate, and the size of the second base plate is adapted to the size of the fan-shaped notch of the first base plate.

[0012] The second base plate is provided with a retaining ring at one end corresponding to the central angle, and a protruding ring is provided at the lower end of the retaining ring. The protruding ring is sleeved in the fixed collar and is interference-fitted with the fixed collar. The bottom of the hopper extends horizontally and is provided with an arc-shaped flange. The arc-shaped end of the second base plate is provided with a groove that engages with the arc-shaped flange. The bottom of the rotating part is provided with a connecting protrusion, and the first base plate is provided with a through hole for the connecting protrusion to pass through. The rotating part is clamped on the first base plate by the connecting protrusion, and the connecting protrusion passes through the first base plate and is fixedly connected to the output shaft of the drive motor.

[0013] A baffle plate is provided above the connection between the first bottom plate and the second bottom plate inside the hopper to block the material. The baffle plate has two opposing inclined baffle surfaces.

[0014] The top surface of the rotating part is an inverted conical slope, or the upper end of the rotating part is fitted with a rotating soft cover, the top surface of which is an inverted conical slope.

[0015] With the above structure, the feeding mechanism of the packaging machine of this utility model has the following beneficial effects: 1. The bottom of the hopper is provided with a first bottom plate for blocking the discharge port and a second bottom plate for opening and closing the discharge port. The second bottom plate is movably connected to the first bottom plate. By moving the second bottom plate, the size of the discharge port can be controlled, thereby controlling the discharge amount. 2. A rotatable pushing component is installed at the bottom of the hopper. The pushing component includes a first pushing plate and a rotating part fixed to the first pushing plate. When the first pushing plate rotates, the first pushing component can push the material in the hopper into the discharge port and fall from the discharge port. The end of the first pushing component away from the rotating part is provided with an extension part that pushes the material on the side wall of the hopper into the discharge port. At the same time, it can push the material on the side wall of the hopper into the bottom of the hopper, preventing the material from accumulating in the hopper. When the weighing time is not completed and the material accumulates in the vibrating plate of the vibrating feeding mechanism, the first pushing plate is controlled to stop rotating. At this time, the material will accumulate at the narrow discharge port because it loses the pushing effect, and the discharge speed will be significantly reduced, avoiding excessive accumulation of material in the vibrating plate, thereby improving the working efficiency of the packaging machine.

[0016] Furthermore, the pushing assembly also includes a second pushing plate fixed to the rotating part. One end of the second pushing plate is fixedly connected to the rotating part. The length of the second pushing plate is less than the length of the first pushing plate. The end of the second pushing plate away from the rotating part is less than the distance between the rotating part and the inner sidewall of the hopper. Taking the rotation direction of the first pushing plate and the second pushing plate as the front, the angle between the second pushing plate and the tangent direction of the corresponding sidewall of the rotating part is an obtuse angle. With this configuration, when the second pushing plate rotates, it can push the material in the bottom of the hopper toward the end away from the rotating part of the discharge port, which is convenient for discharging and prevents the material from accumulating in the hopper. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the feeding mechanism of a packaging machine according to the present invention; Figure 2 This is a schematic diagram of the rotating assembly in this utility model; Figure 3 This is a schematic diagram of the structure of the second base plate in this utility model; Figure 4 This is another structural schematic diagram of the feeding mechanism of a packaging machine according to the present invention; Figure 5 for Figure 4 Enlarged diagram of A in the middle; Figure 6 This is a top view schematic diagram of the feeding mechanism of a packaging machine according to the present invention.

[0018] In the picture: 1. Feed hopper; 2. First bottom plate; Fixed plate 21; First extension arm 22; Fixed collar 221; Second extension arm 23; Second base plate 3; retaining ring 31; 32; 33; First pusher plate 41; Second pusher plate 42; Rotating part 43; Connecting protrusion 431; First L-shaped plate 44; First pusher component 45; Extension 451; Second L-shaped plate 46; Second pusher component 47; Rotating flexible cover 48; 5. Drive motor; 6. Baffle plate. Detailed Implementation

[0019] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0020] A feeding mechanism for a packaging machine, such as Figures 1-6 As shown, it includes a feeding hopper 1, with a circular feeding port at the bottom of the feeding hopper 1, and the lower part of each side wall of the feeding hopper 1 is conical.

[0021] The bottom of the hopper 1 is provided with a first bottom plate 2 for blocking the discharge port and a second bottom plate 3 for opening and closing the discharge port. Specifically, the first bottom plate 2 is a bottom plate with a fan-shaped notch and the second bottom plate 3 is a fan-shaped bottom plate.

[0022] The outer edge of the first base plate 2 is welded and fixed to the bottom of the hopper 1. The second base plate 3 is rotatably connected to the first base plate 2. The size of the discharge opening can be adjusted by adjusting the gap between the second base plate 3 and the first base plate 2. The size of the second base plate 3 is adapted to the size of the fan-shaped notch of the first base plate 2. When the second base plate 3 is rotated to the fan-shaped notch of the first base plate 2, the second base plate 3 can partially or completely cover the fan-shaped notch.

[0023] A rotatable pushing assembly is provided inside the bottom of the hopper 1. The pushing assembly includes a first pushing plate 41, a second pushing plate 42 located above the first base plate 2, and a rotating part 43 fixed to the first pushing plate 41 and the second pushing plate 42. The length of the second pushing plate 42 is less than the length of the first pushing plate 41. The rotating part 43 is located at the center of the bottom of the first base plate 2 corresponding to the bottom of the hopper 1. A drive motor 5 for driving the rotating part 43 to rotate is provided at the bottom of the hopper 1 corresponding to the position of the rotating part 43.

[0024] Specifically, the bottom of the first base plate 2 is provided with a fixing component for fixing the drive motor 5. The fixing component includes a fixing plate 21, which has a first extension arm 22 and a second extension arm 23 arranged vertically. The fixing plate 21 is fixed to the bottom of the first base plate 2 by several screws. The first extension arm 22 and the second extension arm 23 extend horizontally to the center of the bottom of the lower hopper 1, respectively. A fixing collar 221 is provided at the end of the first extension arm 22 that is away from the fixing plate 21. The drive motor 5 is fixed to the bottom of the second extension arm 23, and the output shaft of the drive motor 5 extends upward. The fixing collar 221, the output shaft of the drive motor 5, and the center of the rotating part 43 are located on the same axis.

[0025] A retaining ring 31 is provided at one end of the second base plate 3 corresponding to the central angle. A protruding ring 32 is provided at the lower end of the retaining ring 31. The protruding ring 32 is fitted inside the fixed collar 221 and is press-fitted with the fixed collar 221. The retaining ring 31 is located between the center of the first base plate 2 and the fixed collar 221. An arc-shaped flange is provided on the outer side of the bottom of the hopper 1 extending horizontally. The arc-shaped end of the second base plate 3 is provided with a groove 33 that engages with the arc-shaped flange. This arrangement allows the second base plate 3 to rotate around the first base plate 2 along the arc-shaped flange under the action of external force.

[0026] The bottom of the rotating part 43 is provided with a connecting protrusion 431. The first base plate 2 is provided with a through hole for the connecting protrusion 431 to pass through. The rotating part 43 is clamped on the first base plate 2 by the connecting protrusion 431. The connecting protrusion 431 passes through the first base plate 2, the retaining ring 31 and the protruding ring 32 in sequence and is sleeved on the output shaft of the drive motor 5. Several fastening screws are provided along the periphery of the connecting protrusion 431. These fastening screws pass through the connecting protrusion 431 and abut against the output shaft of the drive motor 5, thereby fixing the rotating part 43 and the output shaft of the drive motor 5 together. The rotation of the rotating part 43 is driven by the drive motor 5, which in turn drives the rotation of the first pusher plate 41 and the second pusher plate 42, pushing the material in the hopper 1 to the discharge port.

[0027] Specifically, one end of the first pusher plate 41 is fixedly welded to the rotating part 43, and the other end of the first pusher plate 41 extends horizontally to the inner wall of the lower hopper 1. Taking the rotation direction of the first pusher plate 41 and the second pusher plate 42 as the front, the angle α between the tangent direction of the first pusher plate 41 and the corresponding side wall of the rotating part 43 is an acute angle or an obtuse angle (not perpendicular). One end of the second pusher plate 42 is fixedly welded to the rotating part 43, and the other end of the second pusher plate 42 extends horizontally to the inner wall of the lower hopper 1. The end of the second pusher plate 42 away from the rotating part 43 is smaller than the distance between the rotating part 43 and the inner wall of the lower hopper 1. That is, when the second pusher plate 42 rotates to the gap between the first bottom plate 2 and the second bottom plate 3 corresponding to the discharge port, the end of the second pusher plate 42 away from the rotating part 43 is located within this gap. The angle β between the tangent direction of the second pusher plate 42 and the corresponding side wall of the rotating part 43 is an obtuse angle. With this setting, when the second pusher plate 42 rotates, the pushing direction of the second pusher plate 42 is to push the material outward along the concentric circle trajectory of the rotating part 43. This can push the material in the bottom of the hopper 1 toward the end away from the rotating part 43 of the discharge port, which is convenient for discharge and the material will not accumulate in the hopper 1.

[0028] A first L-shaped plate 44 is connected to the first pusher plate 41. The first L-shaped plate 44 is located behind the first pusher plate 41. The vertical plate of the first L-shaped plate 44 is connected to the first pusher plate 41 by fastening screws. The horizontal plate of the first L-shaped plate 44 is located above the first pusher plate 41. This arrangement facilitates material pushing. A first pusher component 45 is sandwiched between the first pusher plate 41 and the vertical plate 44 of the first L-shaped plate, which is arranged along the length direction of the first pusher plate 41. The first pusher component 45 is a soft silicone sheet or a soft brush. The bottom of the first pusher component 45 is in contact with the first base plate 2. An extension 451 is provided at the end of the first pusher component 45 away from the rotating part 43 to push the material on the side wall of the hopper 1 into the discharge port. The lower end of the extension 451 forms an inclined surface that matches the conical side wall of the hopper 1, which is beneficial for pushing the material on the side wall of the hopper 1 inward to the discharge port.

[0029] A second L-shaped plate 46 is connected to the second pusher plate 42. The second L-shaped plate 46 is located behind the second pusher plate 42. The vertical plate of the second L-shaped plate 46 is connected to the second pusher plate 42 by fastening screws, and the horizontal plate of the second L-shaped plate 46 is located above the second pusher plate 42. This arrangement facilitates material pushing. A second pusher component 47 is sandwiched between the vertical plates of the second pusher plate 42 and the second L-shaped plate 46, and is arranged along the length of the second pusher plate 42. The second pusher component 47 is a soft silicone sheet or a soft brush, and the bottom of the second pusher component 47 is in contact with the first base plate 2.

[0030] When the first pusher plate 41 and the second pusher plate 42 rotate, the first pusher plate 41 and the first pusher component 45 push the material (such as tea leaves) on the side wall of the hopper 1 inward to the discharge port. Since the discharge port is fan-shaped relative to the gap between the first bottom plate 2 and the second bottom plate 3, the discharge port gradually increases in size from the rotating part 43 (i.e., the inner side) to the side wall of the hopper 1 (i.e., the outer side). The second pusher plate 42 and the second pusher component 47 push the material in the hopper 1 outward to the side with the larger discharge port opening and drop it from the discharge port, preventing the material from accumulating in the hopper 1. At the same time, they also have a stirring effect, accelerating the discharge. When the weighing time is not completed and the material accumulates in the vibrating plate of the vibrating feeding mechanism, the equipment controls the first pusher plate 41 and the second pusher plate 42 to stop rotating. At this time, the material will accumulate at the narrow discharge port because it loses its pushing force, and the discharge speed will be significantly reduced, avoiding excessive accumulation of material in the vibrating plate, thereby improving the working efficiency of the packaging machine.

[0031] Furthermore, the first pusher plate 41 and the second pusher plate 42 are respectively inclined forward from bottom to top in the hopper 1, that is, the inclination direction of the first pusher plate 41 and the second pusher plate 42 are matched with the rotation direction, which is conducive to better pushing of materials. Furthermore, a baffle plate 6 is provided above the connection between the first bottom plate 2 and the second bottom plate 3 inside the hopper 1 to block material. The baffle plate 6 is welded inside the hopper 1 and is located above the first pusher plate 41 and the second pusher plate 42. The baffle plate 6 has two opposing inclined blocking surfaces. When the second bottom plate 3 is rotated around the first bottom plate 2, a gap is formed below the baffle plate 6, and the size of the discharge opening is adjusted to be close to the size of the baffle plate 6. The baffle plate 6 can play a certain blocking role for the material in the hopper 1 (at this time, the rotating part 43 is in a stopped state), preventing the material from falling from the discharge opening. This is suitable for materials with smaller particles. For materials with larger particles, even if the discharge opening is larger, the material is not easy to fall.

[0032] Furthermore, the top surface of the rotating part 43 is an inverted conical slope, or the upper end of the rotating part 43 is covered with a plastic rotating soft cover 48, the top surface of which is an inverted conical slope, to prevent material from accumulating on the top of the rotating part 43.

[0033] The feeding mechanism of this packaging machine is not limited to single-hopper or double-hopper tea packaging machines, but can also be used for feeding other bulk material packaging machines.

[0034] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish different objects, rather than to distinguish a specific order.

[0035] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A feeding mechanism for a packaging machine, comprising a feeding hopper, wherein the bottom of the feeding hopper has a feeding port, characterized in that: The bottom of the hopper, corresponding to the position of the discharge port, is provided with a first bottom plate for blocking the discharge port and a second bottom plate for opening and closing the discharge port. The first bottom plate is fixed to the bottom of the hopper, and the second bottom plate is movably connected to the first bottom plate. A rotatable pushing assembly is provided inside the bottom of the hopper. The pushing assembly includes a first pushing plate and a rotating part fixed to the first pushing plate. The rotating part is located at the center position of the first bottom plate corresponding to the bottom of the hopper. A drive motor for driving the rotating part is provided at the position of the rotating part on the bottom of the hopper. The output shaft of the drive motor is connected to the rotating part. One end of the first pushing plate is fixedly connected to the rotating part, and the other end of the first pushing plate extends towards the inner side wall of the hopper. A first pushing member is provided on the first pushing plate. The end of the first pushing member away from the rotating part is provided with an extension portion for pushing the material on the side wall of the hopper toward the discharge port. A fixing member for fixing the drive motor is provided at the bottom of the first bottom plate.

2. The feeding mechanism of a packaging machine according to claim 1, characterized in that: The first pusher plate is connected to the first L-shaped plate, and the first pusher component is sandwiched between the first pusher plate and the first L-shaped plate. The first pusher component is a soft silicone sheet or a soft brush.

3. The feeding mechanism of a packaging machine according to claim 1, characterized in that: The pushing assembly further includes a second pushing plate fixed to the rotating part. One end of the second pushing plate is fixedly connected to the rotating part, and the other end of the second pushing plate extends toward the inner wall of the hopper. The length of the second pushing plate is less than the length of the first pushing plate, and the end of the second pushing plate away from the rotating part is less than the distance between the rotating part and the inner wall of the hopper. Taking the rotation direction of the first pushing plate and the second pushing plate as the front, the angle between the second pushing plate and the tangent direction of the rotating part is an obtuse angle, so that the second pushing plate pushes the material in the bottom of the hopper toward the end of the discharge port away from the rotating part.

4. The feeding mechanism of a packaging machine according to claim 3, characterized in that: The second pusher plate is connected to the second L-shaped plate, and a second pusher component is sandwiched between the second pusher plate and the second L-shaped plate. The second pusher component is a soft silicone sheet or a soft brush.

5. The feeding mechanism of a packaging machine according to claim 3, characterized in that: The first pusher plate and the second pusher plate are respectively inclined forward from bottom to top inside the feeding hopper.

6. The feeding mechanism of a packaging machine according to claim 1, characterized in that: The fixing component includes a fixing plate, which has a first extension arm and a second extension arm arranged vertically. The fixing plate is fixed below the first base plate. A fixing collar is provided at the end of the first extension arm that is away from the fixing plate. The drive motor is fixed at the bottom of the second extension arm.

7. The feeding mechanism of a packaging machine according to claim 6, characterized in that... The discharge port is a circular discharge port, the first base plate is a base plate with a fan-shaped notch, the second base plate is a fan-shaped base plate, and the size of the second base plate is adapted to the size of the fan-shaped notch of the first base plate.

8. The feeding mechanism of a packaging machine according to claim 7, characterized in that... The second base plate is provided with a retaining ring at one end corresponding to the central angle, and a protruding ring is provided at the lower end of the retaining ring. The protruding ring is sleeved in the fixed collar and is interference-fitted with the fixed collar. The bottom of the hopper extends horizontally and is provided with an arc-shaped flange. The arc-shaped end of the second base plate is provided with a groove that engages with the arc-shaped flange.

9. The feeding mechanism of a packaging machine according to claim 1, characterized in that... The bottom of the rotating part is provided with a connecting protrusion, and the first base plate is provided with a through hole for the connecting protrusion to pass through. The rotating part is clamped on the first base plate by the connecting protrusion, and the connecting protrusion passes through the first base plate and is fixedly connected to the output shaft of the drive motor.

10. The feeding mechanism of a packaging machine according to claim 1, characterized in that... The material blocking plate is provided above the connection between the first bottom plate and the second bottom plate in the hopper. The material blocking plate has two opposing inclined blocking surfaces. The top surface of the rotating part is an inverted conical inclined surface, or the upper end of the rotating part is covered with a rotating soft cover, the top surface of which is an inverted conical inclined surface.

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