Packing machine material door control mechanism and packing machine

Abstract

The utility model provides a material door control mechanism of a packaging machine and the packaging machine. The material door control mechanism of the packaging machine comprises a blanking pipe, the first material door is movably arranged on the outer side of the outlet end of the discharging pipe, and the inner diameter of the first material door is not smaller than the outer diameter of the outlet end of the discharging pipe; the upper end of the second material door is fixedly installed on the discharging pipe, the lower end of the second material door is located below the first material door, and the diameter of the lower bottom face of the second material door is not smaller than the inner diameter of the first material door; the first material door and the second material door are opened and closed through up-down movement. The first material door is a dynamic component which is vertically arranged, and the second material door is a static component which is fixed on the blanking pipe, so that compared with a traditional dynamic single material door design, materials cannot be accumulated on the first material door, stress displacement cannot occur, and meanwhile, the second material door is fixed and cannot move; therefore, the sealing performance between the first material door and the second material door cannot be influenced by the residual materials on the second material door, and the two material doors cannot fall off.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing machine technical field, specifically to a kind of packing machine material door control mechanism and packing machine. BACKGROUND

[0002] Automatic ton bag packing machine, 10~50kg capacity automatic open mouth bag packing machine usually adopt vertical blanking pipe and material door control mechanism to carry out accurate powder material filling quantity control, to ensure the metering stability of packing machine.

[0003] At present, conventional material door control mechanism is mostly adopted spherical material door (for example, the Chinese patent with publication number CN207434208U), conical material door or inclined plate material door structure, and the opening and closing size of material door is adjusted by controlling the lifting or opening and closing of material door itself, to realize accurate control of filling quantity.

[0004] For example, the Chinese patent with publication number CN218617276U discloses a kind of blanking pipe assembly for packing scale, bottom valve is provided in the bottom of blanking pipe body, and bottom valve is driven up and down to form sealing closure or opening with blanking pipe.This kind of closing or opening of blanking pipe and blanking pipe is controlled by lifting or opening and closing of material door itself, and there are generally slight displacement when material is accumulated on material door, which leads to leakage problem of not being tightly closed between material door and blanking pipe, and the risk problem of material accumulation on material door increasing the falling risk of movable material door.

[0005] Therefore, optimizing the structure of material door control mechanism is one of the technical problems to be solved in the field. CONTENT OF UTILITY MODEL

[0006] The utility model aims at overcoming the defects of prior art, and provides a kind of packing machine material door control mechanism and packing machine, can solve the problem of material door and blanking pipe in prior art that is not tightly closed and material door is easily fallen off.

[0007] In order to realize the above purpose and other purposes, the utility model is realized by including the following technical schemes: as a first aspect, the utility model proposes a kind of packing machine material door control mechanism, including blanking pipe;First material door, movably arranged outside the outlet end of the blanking pipe, its inner diameter is not less than the outer diameter of the outlet end of the blanking pipe;Second material door, upper end is fixedly installed on the blanking pipe, lower end is located below the first material door, and lower bottom diameter is not less than the inner diameter of the first material door;The first material door realizes opening and closing between the second material door by up and down movement.

[0008] In an embodiment, the blanking pipe includes blanking screw and pipe body, the blanking screw is arranged in the middle of the pipe body by screw seat;The outer diameter of the screw seat is less than or equal to the inner diameter of the first material door.

[0009] In one embodiment, the second feed gate is fixedly mounted on the feed screw.

[0010] In one embodiment, a fixing part is provided on the outer side of the upper end of the tube body for fixing the drive device of the first material gate.

[0011] In one embodiment, the driving device includes a double-stroke cylinder, a swing connecting rod, and a lifting connecting rod; the fixed end of the double-stroke cylinder is fixed to the fixed part, and the movable end is connected to two lifting connecting rods symmetrically arranged on the first material gate through the swing connecting rod.

[0012] In one embodiment, the swing connecting rod includes a first connecting part and a second connecting part. One end of the first connecting part is rotatably connected to the movable end of the double-stroke cylinder via a spherical bearing, the middle part is rotatably connected to the fixed part, and the other end is fixedly connected to the second connecting part and located on the axis of symmetry of the second connecting part. The two ends of the second connecting part are respectively connected to the upper ends of the two lifting connecting rods via spherical bearings. The lower ends of the two lifting connecting rods are respectively connected to the first material gate via spherical bearings.

[0013] In one embodiment, the second connecting part is a U-shaped plate, a C-shaped plate, or a U-shaped plate.

[0014] In one embodiment, a first sealing ring is provided between the first material gate and the outlet end of the feeding pipe. The first sealing ring is installed on the outer end face of the outlet end of the feeding pipe and forms contact with the inner wall of the first material gate.

[0015] In one embodiment, a second sealing ring is provided between the first material gate and the second material gate. The second sealing ring is installed on the outer wall of the second material gate and forms contact with the inner wall of the first material gate.

[0016] As a second aspect, this utility model proposes a packaging machine, including the packaging machine material gate control mechanism as described in the first aspect.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this utility model, the first material gate is a vertically arranged dynamic component, and the second material gate is a static component fixed on the feeding pipe. Compared with the dynamic single material gate in the traditional design, the first material gate will not accumulate material, so there is no situation of displacement due to force failure. At the same time, the second material gate will not move, so the residual material on the second material gate will not affect the airtightness between the first and second material gates, and the second material gate will not fall off due to the accumulation of residual material.

[0019] 2. This utility model has a simple structure and is easy to install. The design of the double-stroke cylinder, swing connecting rod and lifting connecting rod can more accurately control the lifting amplitude of the first material gate. The joint bearings at both ends of the lifting connecting rod enable the first material gate to achieve automatic alignment, ensuring that it can always be tightly attached to the second material gate when it is closed, which greatly improves the drive reliability of the material gate control mechanism.

[0020] 3. The first sealing ring design of this utility model can effectively prevent material from leaking from above the first material gate, further improving the accuracy of material filling.

[0021] 4. The second sealing ring design of this utility model can effectively prevent material from leaking between the first and second material gates after the first and second material gates are closed, further improving the metering accuracy. Attached Figure Description

[0022] Figure 1 The image shown is a first-angle three-dimensional structural diagram of a material gate control mechanism for a packaging machine according to this utility model.

[0023] Figure 2 The diagram shown is a two-dimensional structural schematic of a material gate control mechanism for a packaging machine according to the present invention.

[0024] Figure 3 The diagram shown is a cross-sectional view of the first material gate of a packaging machine material gate control mechanism of this utility model, located at its maximum opening.

[0025] Figure 4 The image shown is an enlarged view of the contact area between the screw seat and the first material gate of the material gate control mechanism of a packaging machine according to this utility model.

[0026] Figure 5 The diagram shows a cross-sectional view of the first and second material gates of a packaging machine material gate control mechanism of this utility model when they are closed.

[0027] In the figure: 10, feeding pipe; 11, feeding screw; 12, pipe body; 13, fixing part; 14, screw seat; 141, groove; 20, first material gate; 30, second material gate; 40, drive device; 41, double stroke cylinder; 42, swing connecting rod; 421, first connecting part; 422, second connecting part; 43, lifting connecting rod; 44, spherical bearing; 51, first sealing ring. Detailed Implementation

[0028] Please see Figures 1-5 The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0029] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0030] In this invention, the serial numbers assigned to components, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The term "connection" in this invention, unless otherwise specified, includes both direct and indirect connections. The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, encompassing not only the listed elements but also other elements not expressly listed.

[0031] like Figures 1-5 As shown, this utility model provides a material gate control mechanism for a packaging machine, which is installed on the packaging machine and includes a feeding pipe 10, a first material gate 20, and a second material gate 30. The feeding pipe 10 is a vertical spiral feeding pipe. The first feeding gate 20 is a cylindrical feeding gate with an inner diameter equal to or slightly larger than the outer diameter of the outlet end of the feeding pipe 10. The first feeding gate 20 is movably installed outside the outlet end of the feeding pipe 10. The second feeding gate 30 can be a solid or hollow frustum or cone. Its upper end is fixedly installed on the feeding pipe 10, and its lower end is located below the first feeding gate 20. The diameter of the bottom surface is equal to or larger than the inner diameter of the first feeding gate 20. When the first feeding gate 20 is raised to the highest point, the first feeding gate 20 and the second feeding gate 30 form the maximum opening. At this time, the material can flow out quickly from between the feeding pipe 10 and the second feeding gate 30. When the first feeding gate 20 is lowered to the lowest point, the first feeding gate 20 and the second feeding gate 30 are sealed and closed. At this time, the material stops flowing out from between the feeding pipe 10 and the second feeding gate 30, and the packaging ends.

[0032] Please combine Figures 2-4 The feeding pipe 10 includes a feeding screw 11, a pipe body 12, a fixing part 13, and a screw seat 14. The lower end of the feeding screw 11 is fixedly connected to the second material gate 30. The second material gate 30 is fixed to the middle of the pipe body 12 by the screw seat 14 located at the bottom of the pipe body 12, and the feeding screw 11 is fixed to the middle of the pipe body 12. The fixing part 13 is located on the outer side of the upper end of the pipe body 12 and is used to fix the drive device 40.

[0033] The drive unit 40 is used to drive the first material gate 20 to move up and down at the outlet end of the feed pipe 10. The drive unit 40 includes a double-stroke cylinder 41, a swing connecting rod 42, and a lifting connecting rod 43. The fixed end of the double-stroke cylinder 41 is fixed on the fixed part 13, and the movable end (i.e., the cylinder guide rod) is connected to two lifting connecting rods 43 symmetrically arranged on the first material gate 20 through the swing connecting rod 42. The swing connecting rod 42 includes a first connecting part 421 and a second connecting part 422. The first connecting part 421 is a straight plate; the second connecting part 422 is a U-shaped plate, or it can be a C-shaped plate or a U-shaped plate. One end of the first connecting part 421 is rotatably connected to the cylinder guide rod of the double-stroke cylinder 41 via a spherical bearing 44, the middle part is rotatably connected to the fixed part, and the other end is fixedly connected to the second connecting part 422 and is located on the symmetrical axis of the second connecting part. The two ends of the second connecting part 422 are respectively connected to the upper pins of the two lifting connecting rods 43 via spherical bearings 44. The lower ends of the two lifting connecting rods 43 are respectively connected to the pins of the first material gate 20 via spherical bearings 44. The spherical bearings 44 at both ends of the lifting connecting rods 43 work together to enable the first material gate 20 to achieve automatic alignment, ensuring that it is always in close contact with the second material gate 30 when closed.

[0034] like Figure 4 As shown, the inner diameter of the first material gate 20 is equal to or slightly larger than the outer diameter of the screw seat 14. To ensure that material (especially dusty material) leaks from above the first material gate 20, a first sealing ring 51 can be provided between the first material gate 20 and the screw seat 14. The first sealing ring 51 can be an O-ring, installed in the groove 141 on the outer end face of the screw seat 14. The first sealing ring 51 forms contact with the inner wall of the first material gate 20 to achieve a seal between the screw seat 14 and the first material gate 20.

[0035] Further, please refer to Figure 5 To ensure that materials (especially dusty materials) do not leak between the first material gate 20 and the second material gate 30 after the first material gate 20 and the second material gate 30 are closed, thus affecting the metering accuracy, a second sealing ring can be set between the first material gate 20 and the second material gate 30. The second sealing ring can be an O-ring and can be installed on the outer wall of the second material gate 30 with the same inner diameter as the first material gate 20. The second sealing ring can form contact with the inner wall of the first material gate 20 to achieve a seal between the first material gate 20 and the second material gate 30.

[0036] Please combine Figure 4 and Figure 5When the packaging machine starts running, the cylinder guide rod of the double-stroke cylinder 41 of the packaging machine's material gate control mechanism extends, driving the swing connecting rod 42 to rotate. This causes the opening of the second connecting part 422 to move from a downward angle to an upward angle, thereby pulling the lifting connecting rod 43 upward and lifting the first material gate 20 upward to separate it from the second material gate 30. When the first material gate 20 is lifted to its maximum opening, the material flows out quickly from the outlet of the feeding pipe 10 and is guided by the guide surface of the second material gate 30 to achieve rapid packaging feeding. When the material quantity reaches the slow feeding threshold set by the equipment, the double-stroke cylinder 41 pushes a section of the cylinder guide rod to retract, driving the swing connecting rod 42 to rotate. The movement causes the opening of the second connecting part 422 to move from an upward to a downward direction, thereby controlling the lifting linkage 43 to move downward and close the first material gate 20 by a certain amount of material feeding space, thus reducing the size of the opening between the first material gate 20 and the second material gate 30, thereby controlling the outflow of material and facilitating the control of metering accuracy. When the set packaging weight is reached, the double-stroke cylinder 41 pushes the other cylinder guide rod to retract, continuing to drive the swing connecting rod 42 to rotate, causing the opening of the second connecting part 422 to continue to move downward, thereby continuing to drive the lifting linkage 43 downward until the first material gate 20 and the second material gate 30 are closed, forming a seal, and completing precise packaging quantity control.

[0037] In summary, the first material gate 20 is a vertically arranged dynamic component, while the second material gate 30 is a static component fixed to the feed pipe 10. Compared with the dynamic single material gate in the traditional design, the first material gate 20 will not accumulate material, so there is no situation where displacement occurs due to force failure. At the same time, the second material gate 30 will not move, so the residual material on the second material gate 30 will not affect the airtightness between the first material gate 20 and the second material gate 30, and the second material gate 30 will not fall off due to the accumulation of residual material.

[0038] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A material gate control mechanism for a packaging machine, characterized in that, Comprising A blanking pipe; A first material gate, which is movably arranged outside the outlet end of the blanking pipe, and its inner diameter is not less than the outer diameter of the outlet end of the blanking pipe; A second material gate, the upper end of which is fixedly installed on the blanking pipe, the lower end is located below the first material gate, and the diameter of the lower bottom surface is not less than the inner diameter of the first material gate; The first material gate realizes the opening and closing with the second material gate through up and down movement.

2. The packaging machine material gate control mechanism according to claim 1, characterized in that, The blanking pipe comprises a blanking screw and a pipe body, and the blanking screw is arranged in the middle of the pipe body through a screw seat; the outer diameter of the screw seat is less than or equal to the inner diameter of the first material gate.

3. The packaging machine material gate control mechanism according to claim 2, characterized in that, The second material gate is fixedly installed on the blanking screw.

4. The packaging machine material gate control mechanism according to claim 2, characterized in that, A fixing part is arranged on the outer side of the upper end part of the pipe body for fixing the driving device of the first material gate.

5. The packaging machine material gate control mechanism according to claim 4, characterized in that, The driving device comprises a double-stroke cylinder, a swing connecting rod and a lifting connecting rod; the fixed end of the double-stroke cylinder is fixed on the fixing part, and the movable end is connected to the two lifting connecting rods symmetrically arranged on the first material gate through the swing connecting rod.

6. The packaging machine material gate control mechanism according to claim 5, characterized in that, The swing connecting rod comprises a first connecting part and a second connecting part. One end of the first connecting part is rotatably connected to the movable end of the double-stroke cylinder through a spherical bearing, the middle part is rotatably connected to the fixing part, the other end is fixedly connected to the second connecting part and is located on the symmetry axis of the second connecting part; both ends of the second connecting part are respectively connected to the upper ends of the two lifting connecting rods through spherical bearings; the lower ends of the two lifting connecting rods are respectively connected to the first material gate through spherical bearings.

7. The packaging machine material gate control mechanism according to claim 6, characterized in that, The second connecting part is a "凵"-shaped plate, a C-shaped plate or a U-shaped plate.

8. The packaging machine material gate control mechanism according to claim 1, characterized in that, A first sealing ring is arranged between the first material gate and the outlet end of the blanking pipe, and the first sealing ring is installed on the outer end surface of the outlet end of the blanking pipe and forms contact with the inner wall of the first material gate.

9. The packaging machine material gate control mechanism according to claim 1, characterized in that, A second sealing ring is arranged between the first material gate and the second material gate, and the second sealing ring is installed on the outer wall of the second material gate and forms contact with the inner wall of the first material gate.

10. A packaging machine, characterized in that, Comprising the packaging machine material gate control mechanism according to any one of claims 1 to 9.

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