Discharging mechanism for packaging viscous powder particles and packaging machine

Abstract

The utility model discloses a blanking mechanism for packaging viscous powder particles, which comprises a base, a screw cavity is arranged in the base, the screw cavity is divided into a material supplementing area and a metering area, a horizontal screw penetrating through the material supplementing area and the metering area is rotatably arranged in the screw cavity, and the horizontal screw penetrates through the material supplementing area and the metering area. The volume of the material supplementing area is larger than the space volume occupied when the screw located in the material supplementing area rotates, a horizontal containing groove is formed in the bottom wall of the material supplementing area, and the screw located in the material supplementing area is arranged in the containing groove and is tangent to the arc-shaped groove wall of the containing groove. The portion, located in the metering area, of the screw is tangent to the side wall of the cylindrical screw cavity in the metering area, the top of the material supplementing area is open to form a feeding port of the screw cavity, and a discharging port corresponding to the tail end of the screw is formed in the lower portion of the base. According to the utility model, material adhesion can be effectively avoided, and continuous blanking with accurate metering can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a feeding mechanism and a packaging machine for sticky powder particle packaging. Background Art

[0002] In the food, medicine, and health food industries, small doses (0.5g-30g) of powdered and granular materials are often packaged for consumers to take at one time. However, some of these materials are sticky materials, such as donkey-hide gelatin powder, which is easy to absorb moisture, easy to agglomerate under heat, and easy to produce static adsorption. The existing small-dose packaging equipment is difficult to apply to the stable and continuous production of such sticky materials. During the metering and feeding process, the materials often stick together, causing difficulties in feeding, resulting in production stagnation. The feeding mechanism must be thoroughly cleaned and dried before it can be used again. The Chinese utility model patent with announcement number CN217994834U discloses a feeding mechanism of a powder packaging machine, which improves the structure of the feed box, installs an anti-blocking cone inside the feed box, and cooperates with the vibration motor outside the feed box to prevent the raw materials inside the feed box from being blocked, and a cleaning mechanism is provided on the inner wall of the feed box, which drives the scraping frame to move downward through the hydraulic telescopic rod, and easily scrapes off the raw materials on the inner wall, which is convenient for cleaning the inside of the feed box, and a screw rod is installed inside the conveying box, which is driven by the driving motor to rotate, so that the raw material transportation is faster, but it cannot solve the problem of material being squeezed and bonded during the rotation of the screw rod, and the docking interface between the conveying box and the feed box is small, so it is difficult for the material to fill the spiral groove of the screw rod, thereby affecting the packaging measurement accuracy and production continuity. Utility Model Content

[0003] The utility model provides a feeding mechanism for sticky powder particle packaging. By designing a screw rod as a partially wrapped section and a completely wrapped section that can be used for metering, not only the length of the completely wrapped screw rod is shortened, but also the spiral groove of the screw rod is easier to be filled with materials, so as to achieve the purpose of preventing material adhesion and ensuring metering accuracy.

[0004] The utility model provides a feeding mechanism for sticky powder particle packaging, comprising:

[0005] A base is provided with a screw cavity inside, and the screw cavity is divided into a feeding zone and a metering zone. A horizontal screw is rotatably arranged in the screw cavity and passes through the feeding zone and the metering zone. The volume of the feeding zone is larger than the space occupied by the screw located in the feeding zone when it rotates. A horizontal accommodating groove is provided on the bottom wall of the feeding zone. The screw located in the feeding zone is arranged in the accommodating groove and is tangent to the arc-shaped groove wall of the accommodating groove. The screw located in the metering zone is tangent to the cylindrical screw cavity side wall of the zone. The top of the feeding zone is open to form a feeding port of the screw cavity. A discharge port corresponding to the tail end of the screw is provided under the base.

[0006] Preferably, in the feeding mechanism for packaging sticky powder particles, the central angle corresponding to the groove wall of the accommodating groove is not less than 100°.

[0007] Preferably, in the feeding mechanism for sticky powder particle packaging, the groove wall of the accommodating groove is semicircular.

[0008] Preferably, in the feeding mechanism for sticky powder particle packaging, the length of the metering zone is 2 to 4 times the pitch of the spiral groove on the screw.

[0009] Preferably, in the discharge mechanism for sticky powder particle packaging, a vent hole corresponding to the discharge port is provided on the top of the base.

[0010] Preferably, in the feeding mechanism for packaging sticky powder particles, a cooling channel is provided in the bottom wall of the screw cavity.

[0011] Preferably, the unloading mechanism for sticky powder particle packaging further comprises:

[0012] A lower hopper, which is arranged at the feed inlet;

[0013] A drop pipe is vertically and detachably arranged at the discharge port.

[0014] Preferably, in the discharge mechanism for packaging sticky powder particles, a connecting plate is provided on the top of the discharge pipe, and the connecting plate is connected to the base by screws.

[0015] Preferably, in the unloading mechanism for sticky powder particle packaging, the head end of the screw is rotatably inserted on the base and connected to the output shaft of the driving motor outside the base.

[0016] The utility model also provides a packaging machine, comprising the above-mentioned unloading mechanism for packaging sticky powder particles.

[0017] The utility model at least has the following beneficial effects:

[0018] In the novel method, a screw cavity is arranged in the base, which is divided into a feeding zone and a metering zone. A horizontal screw is arranged to rotate in the screw cavity, which penetrates the feeding zone and the metering zone. The screw in the metering zone is tangent to the cylindrical screw cavity side wall in the zone. The volume of the feeding zone is larger than the space occupied by the screw in the feeding zone when it rotates. The top of the feeding zone is open to form a feeding port of the screw cavity. A discharge port corresponding to the tail end of the screw is arranged under the base. The material enters the feeding zone from the feeding port, enters the metering zone under the pushing action of the screw, and is discharged from the discharge port. The structural design shortens the screw length of the metering zone, that is, shortens the length of the screw completely wrapped by the side wall of the screw cavity, thereby effectively avoiding the adhesion problem caused by the long-term movement friction and extrusion of the material during the pushing and transportation process of the screw in the metering zone, thereby avoiding the problem of production stagnation.

[0019] The top of the new middle feeding area is opened to form a feeding port, so that the material can quickly fill the feeding area, and then quickly fill the spiral groove of the screw, thereby increasing the feeding speed and ensuring the metering accuracy;

[0020] The volume of the feeding zone in the utility model is larger than the space volume occupied by the screw located in the feeding zone when it rotates, a horizontal accommodating groove is arranged on the bottom wall of the feeding zone, the screw located in the feeding zone is arranged in the accommodating groove and is tangent to the arc-shaped groove wall of the accommodating groove, the screw pre-extrudes the material at the accommodating groove to ensure that the material can smoothly enter the metering zone and fill the spiral groove of the metering zone, thereby ensuring the metering accuracy, and the feeding zone allows excess material to be stored after the spiral groove of the screw is filled, which will not cause material extrusion and bonding, and is also convenient for timely replenishing materials to the metering zone to ensure production continuity.

[0021] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of a feeding mechanism for sticky powder particle packaging in one of the technical solutions of the utility model;

[0023] Figure 2 It is a schematic diagram of the side view of the partial structure of a feeding mechanism for sticky powder particle packaging in one of the technical solutions of the utility model;

[0024] Figure 3 This is a schematic diagram of the packaging machine structure in one of the technical solutions of the utility model;

[0025] Among them, 1-driving motor, 2-base, 3-feeding port, 4-screw, 5-feeding area, 6-metering area, 7-exhaust hole, 8-feeding pipe, 9-discharging port, 10-cooling channel, 11-accommodating groove, 12-lower hopper, 13-packaging machine. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0027] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0028] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial sources unless otherwise specified; in the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood in specific circumstances. The orientation or position relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0029] like Figure 1 , Figure 2 As shown, the present application provides a feeding mechanism for sticky powder particle packaging, comprising:

[0030] A base 2 is provided with a screw cavity therein, wherein the screw cavity is divided into a feeding zone 5 and a metering zone 6, wherein a horizontal screw 4 is rotatably provided in the screw cavity and passes through the feeding zone 5 and the metering zone 6, wherein the volume of the feeding zone 5 is larger than the space occupied by the screw 4 located in the feeding zone 5 when rotating, and a horizontal accommodating groove 11 is provided on the bottom wall of the feeding zone 5, wherein the screw located in the feeding zone 5 is arranged in the accommodating groove 11 and is tangent to the arc-shaped groove wall of the accommodating groove 11, and the screw located in the metering zone 6 is tangent to the cylindrical screw cavity side wall of the zone, and the top of the feeding zone 5 is opened to form a feed port 3 of the screw cavity, and a discharge port 9 corresponding to the tail end of the screw 4 is provided below the base 2.

[0031] The present technical solution provides a feeding mechanism for sticky powder particle packaging, comprising a base 2, a screw cavity is arranged inside the base 2, a horizontal screw 4 for pushing materials is rotatably arranged in the screw cavity, the screw cavity is divided into a feeding area 5 for feeding and storing materials and a metering area 6 for metering the amount of feeding, the length of the feeding area 5 is not less than the length of the metering area 6, the screw 4 runs through the feeding area 5 and the metering area 6, the top of the feeding area 5 is open to form a feeding port 3 of the screw cavity, a discharge port 9 corresponding to the tail end of the screw 4 is arranged below the base 2, the tangential speed of the screw 4 during rotation can be used to make the material fall with an initial speed, the volume of the feeding area 5 is larger than the space occupied by the screw 4 when rotating in the feeding area 5, a horizontal accommodating groove 11 is arranged on the bottom wall of the feeding area 5, Part of the screw in the feeding zone 5 is arranged in the accommodating groove 11 and is tangent to the arc-shaped groove wall of the accommodating groove 11. The screw cavity of the metering zone 6 is cylindrical. The screw located in the metering zone 6 is inserted in the screw cavity of this zone and is tangent to the side wall of the screw cavity, that is, the screw in the feeding zone 5 is partially wrapped by the accommodating groove 11, and the screw in the metering zone 6 is completely wrapped by the screw cavity, so that after the spiral groove of the screw 4 is filled with material, there is still excess material stored, and the material will not be squeezed and bonded, which is convenient for timely replenishing the metering zone 6 with material, and the screw in the feeding zone 5 pre-extrudes part of the material in the accommodating groove 11 to ensure that the material can smoothly enter the metering zone 6 and fill the spiral groove of the metering zone 6, so as to facilitate the metering of the filling amount of the material according to the number of spiral grooves in the metering zone 6.

[0032] The method of using the feeding mechanism for sticky powder particle packaging of the present technical solution is as follows: the material continuously enters the feeding zone 5 of the screw cavity from the feed port 3 to fill the spiral groove of the screw 4 in this zone and completely cover the screw 4 in this zone, and at the same time, the screw 4 rotates to continuously push the material in the feeding zone 5 to the metering zone 6 and fill the spiral groove of the screw in the metering zone 6 until the material is discharged from the discharge port 9.

[0033] The technical scheme includes at least the following beneficial effects: a screw cavity divided into a feeding zone 5 and a metering zone 6 is arranged in the base 2, a horizontal screw 4 penetrating the feeding zone 5 and the metering zone 5 is rotatably arranged in the screw cavity, the screw located in the metering zone 6 is tangent to the cylindrical screw cavity side wall of the zone, the volume of the feeding zone 5 is larger than the space volume occupied by the screw 4 located in the feeding zone 5 when rotating, the top of the feeding zone 5 is open to form a feed port 3 of the screw cavity, a discharge port 9 corresponding to the tail end of the screw 4 is arranged under the base 2, the material enters the feeding zone 5 from the feed port 3, enters the metering zone 6 under the pushing action of the screw 4 and is discharged from the discharge port 9, the structural design shortens the length of the screw 4 in the metering zone 6, that is, shortens the length of the screw 4 completely wrapped by the side wall of the screw cavity, thereby effectively avoiding the adhesion problem caused by long-term movement friction and extrusion of the material during the pushing and transportation process of the screw 4 in the metering zone 6. The feeding zone 5 is provided with a horizontal receiving groove 11, and the screw located in the feeding zone 5 is arranged in the receiving groove 11 and is tangent to the arc-shaped groove wall of the receiving groove 11. The screw 4 pre-extrudes the material at the receiving groove 11 to ensure that the material can smoothly enter the metering zone 6 and fill the spiral groove of the metering zone 6, thereby ensuring the metering accuracy. Moreover, the feeding zone 5 allows the excess material to be stored after the spiral groove of the screw 4 is filled, and the material will not be squeezed and bonded, so it is convenient to replenish the material to the metering zone 6 in time to ensure the continuity of production.

[0034] In another technical solution, Figure 1 , Figure 2 As shown, in the unloading mechanism for sticky powder particle packaging, the center angle corresponding to the groove wall of the receiving groove 11 is not less than 100°. The receiving groove 11 can be formed by extending part of the screw cavity of the metering zone 6. The top notch of the receiving groove 11 is used for feeding. The smaller the center angle corresponding to the groove wall of the receiving groove 11, the more exposed parts of the screw 4 of the feeding zone 5, and the easier it is for the material to enter the receiving groove 11 from the notch to fill it up. However, if the center angle is too small, it will cause insufficient pre-compression of the material, and it cannot be guaranteed that the material will fill the spiral groove of the metering zone 6, which will affect the metering accuracy. Therefore, the center angle cannot be less than 100°.

[0035] In another technical solution, Figure 2 As shown, in the unloading mechanism for sticky powder particle packaging, the groove wall of the receiving groove 11 is semi-circular. That is, the receiving groove 11 is semi-cylindrical, half-wrapping the screw 4, which can ensure that the screw 4 in the feeding area 5 is quickly filled with materials and the screw 4 is accurately measured, and can also prevent excessive materials from accumulating in the feeding area 5 and causing adhesion.

[0036] In another technical solution, Figure 1 As shown, in the unloading mechanism for sticky powder particle packaging, the length of the metering zone 6 is 2 to 4 times the pitch of the spiral groove on the screw 4. The screw length of the feeding zone 5 is not less than the screw length of the metering zone 6. If the length of the metering zone 6 is too long, that is, the length of the screw 4 that is completely wrapped is too long, the material will be excessively rubbed and squeezed during transportation in the metering zone 6, causing adhesion and failure of normal material transportation and unloading. Therefore, after a large number of experimental tests, when the length of the screw 4 that is completely wrapped is 2 to 4 times the pitch of its spiral groove, it will not cause material adhesion and can be smoothly transported and unloaded.

[0037] In another technical solution, Figure 1 As shown, in the unloading mechanism for sticky powder granule packaging, the top of the base 2 is provided with an exhaust hole 7 corresponding to the discharge port 9. The top exhaust method makes the unloading smoother and is also conducive to the discharge of heat when the plastic bag of the bag packaging machine is sealed.

[0038] In another technical solution, Figure 1 , Figure 2 As shown, in the feeding mechanism for sticky powder particle packaging, a cooling channel 10 is provided in the bottom wall of the screw cavity. Cold air, coolant, etc. can pass through the cooling channel 10 to cool the feeding mechanism and indirectly cool the material to prevent the material temperature from being too high and accelerating adhesion.

[0039] In another technical solution, Figure 1 , Figure 3 As shown, the sticky powder particle packaging feeding mechanism further includes:

[0040] A lower hopper 12, which is arranged at the feed inlet 3;

[0041] The drop tube 8 is vertically detachably arranged at the discharge port 9. The lower hopper 12 is used to temporarily store materials and limit the flow direction of the materials; the drop tube 8 can be connected to the base 2 through a snap structure; the drop tube 8 is used to limit the flow direction of the materials and accurately enter the container; the drop tube 8 is perpendicular to the screw 4, and the discharge port 9 is located at the tail end of the screw 4. The material is dropped at the corner, and the tangential speed of the screw 4 is used to make the material fall with the initial speed, which not only makes the drop fast, but also can flush the drop tube 8 at the same time, minimizing the material residue on the tube wall.

[0042] In another technical solution, in the discharge mechanism for sticky powder particle packaging, a connection plate is provided on the top of the discharge pipe 8, and the connection plate is connected to the base 2 by screws, so that the disassembly and assembly are convenient and the connection is tight.

[0043] In another technical solution, Figure 1As shown, in the unloading mechanism for sticky powder particle packaging, the head end of the screw 4 is rotatably inserted on the base 2 and connected to the output shaft of the drive motor 1 outside the base 2. The screw 4 can be rotatably inserted on the base 2 through a bearing structure, and is connected to the output shaft of the drive motor 1 through a coupling, and is driven to rotate by the drive motor 1. The drive motor 1 can be a motor with a controllable rotation angle, such as a servo motor, a stepping motor, etc.

[0044] like Figure 3 As shown, the present application also provides a packaging machine 13, characterized in that it includes a feeding mechanism for sticky powder particle packaging in any of the above technical solutions. The feeding pipe 8 of the feeding mechanism can dock with the packaging bag, packaging bottle, packaging can and other containers on the packaging mechanism of the packaging machine 13 for loading and packaging; the feeding mechanism can effectively prevent the material from sticking during loading, and has high metering accuracy, which can effectively improve the working efficiency of the packaging machine 13.

[0045] The number of devices and processing scales described here are used to simplify the description of the utility model. Applications, modifications and variations of the utility model are obvious to those skilled in the art.

[0046] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A feeding mechanism for sticky powder particle packaging, characterized in that: include: A base is provided with a screw cavity inside, and the screw cavity is divided into a feeding zone and a metering zone. A horizontal screw is rotatably arranged in the screw cavity and passes through the feeding zone and the metering zone. The volume of the feeding zone is larger than the space occupied by the screw located in the feeding zone when it rotates. A horizontal accommodating groove is provided on the bottom wall of the feeding zone. The screw located in the feeding zone is arranged in the accommodating groove and is tangent to the arc-shaped groove wall of the accommodating groove. The screw located in the metering zone is tangent to the cylindrical screw cavity side wall of the zone. The top of the feeding zone is open to form a feeding port of the screw cavity. A discharge port corresponding to the tail end of the screw is provided under the base.

2. The unloading mechanism for sticky powder particle packaging according to claim 1, characterized in that: The central angle corresponding to the groove wall of the accommodating groove is not less than 100°.

3. The unloading mechanism for sticky powder particle packaging according to claim 2, characterized in that: The groove wall of the accommodating groove is in a semicircular arc shape.

4. The unloading mechanism for sticky powder particle packaging according to claim 1, characterized in that: The length of the metering zone is 2 to 4 times the pitch of the spiral groove on the screw.

5. The unloading mechanism for sticky powder particle packaging according to claim 1, characterized in that: The top of the base is provided with an exhaust hole corresponding to the discharge port.

6. The unloading mechanism for sticky powder particle packaging according to claim 1, characterized in that: A cooling channel is arranged in the bottom wall of the screw cavity.

7. The unloading mechanism for sticky powder particle packaging according to claim 1, characterized in that: Also includes: A lower hopper, which is arranged at the feed inlet; A drop pipe is vertically and detachably arranged at the discharge port.

8. The unloading mechanism for sticky powder particle packaging according to claim 7, characterized in that: A connecting plate is provided on the top of the drop tube, and the connecting plate is connected to the base through screws.

9. The unloading mechanism for sticky powder particle packaging according to claim 1, characterized in that: The head end of the screw rod is rotatably inserted on the base and connected to the output shaft of the driving motor outside the base.

10. A packaging machine, characterized in that It comprises a feeding mechanism for packaging sticky powder particles as claimed in any one of claims 1 to 9.

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