A powder packaging bag puncture assembly
By using a combination of a flared guide section and a slanted blade in the powder packaging bag, the problems of discontinuous tearing and curling of the powder packaging bag are solved, achieving an efficient and dust-free powder unloading process.
Patent Information
- Application Number
- CN202521797400.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-28
- Estimated Expiration
- 2035-08-22
AI Technical Summary
The multi-layer structure design of existing powder packaging bags results in discontinuous tear lines, low unloading efficiency, and powder residue due to bag curling in the later stages of unloading, which increases labor intensity and easily causes dust pollution.
It adopts a flared guide section with hollowed-out side walls and inclined rods with blades fixed on the rods. The tip and blades are inserted directly into the bag to form a continuous tear. The flared guide section and unidirectional flaring part ensure that the powder is completely discharged, reducing edge curling and dust.
It enables continuous unloading of powder materials, reduces labor intensity, avoids secondary processing, improves unloading efficiency and completeness, and reduces dust pollution.
Smart Images
Figure CN224563001U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material feeding technology, specifically a puncture component for powder packaging bags. Background Technology
[0002] Packaging bags are widely used for packaging powders due to their low cost and the fact that empty bags can be folded and stored. For some powdery materials, such as powders, magnesium powder and other metal powders, as well as certain water-decomposing biopharmaceutical intermediates, which are prone to oxidation when exposed to moisture, packaging bags are made of multi-layered composite barrier materials to prevent moisture and oxidation. These bags typically include a wear-resistant and tensile-resistant outer layer, a middle layer that blocks oxygen and water, and an inner layer for further barrier and sealing.
[0003] Taking iron powder as an example, the powder is one of the main raw materials for heat patch processing, and it is mostly stored in the heat patch processing workshop in the form of packaging bags. In the feeding process before the raw materials of the heat patch are mixed, the powder bag is hoisted to the feeding mechanism by a hoisting device, and the powder bag is punctured by a puncturing component to achieve powder feeding. As described in the text of Chinese Patent Publication No. CN219635697U entitled "A Hoisting Mechanism for Powder Feeding", after the powder packaging bag is hoisted to the feeding port, the conical part outside the spherical part at the feeding port is used to puncture the powder packaging bag. Then, the conical part is used to scratch the outside of the packaging bag to achieve the purpose of tearing the packaging bag for feeding.
[0004] However, in practice, due to the multi-layered structure of powder packaging bags, tearing the bag by slicing the outside often results in incomplete tearing of the middle and inner layers. This leads to tears that remain only on the surface or appear as jagged breaks, failing to create a continuous, unblocked opening. Consequently, material unloading efficiency is low, and complete unloading is difficult. Furthermore, even if the bag opening is continuous and extends into the inside, the multi-layered design causes the edges of each tear layer to curl to varying degrees as the powder material inside decreases. This results in some powder remaining inside the bag, forcing operators to resort to secondary processing methods such as squeezing and patting, increasing labor intensity and increasing the risk of bag breakage and dust pollution. Therefore, this issue urgently needs to be addressed. Utility Model Content
[0005] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a puncture component for powder packaging bags, which can not only form a continuous and penetrating tear on the bag body, but also prevent the bag body from curling at the later stage of unloading. It eliminates the need for secondary processing by operators, thereby improving the efficiency, convenience and completeness of unloading.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A powder packaging bag puncture assembly includes a flared guide section with a hollowed-out sidewall and a through-hole design, and inclined rods that are distributed at an angle from a horizontal perspective. The inclined rods are configured as at least three rods evenly spaced around the vertical line where their inclined high ends are located. A blade is vertically fixed to the outer surface of the inclined rod with its blade facing outward and its length direction along the length direction of the inclined rod. The inclined high ends of the blades converge to form a vertically upward pointed tip. The inclined low end of the inclined rod is fixed to the upper opening edge of the flared guide section, so that after the packaging bag is punctured by the tip, it is guided by the inclined rod and the blade to tear the packaging bag and finally smoothly fits onto the outer periphery of the flared guide section.
[0008] As a further embodiment of this utility model: the flared guide part is an equilateral prism that is hollow inside and arranged vertically, and the number of side edges of the equilateral prism is the same as that of the inclined rod, and the inclined low end of the inclined rod is fixed to the top of the side edge of the equilateral prism one by one.
[0009] As a further improvement of this utility model: a one-way flaring part is installed in the hollowed-out part of the side wall of the flaring guide part. The one-way flaring part includes a flaring component. The flaring component has a retracted state in which it is retracted to the inside of the flaring guide part to avoid the packaging bag from sliding downward, and an unfolded state in which it is unfolded to the outside of the flaring guide part to rigidly prevent the packaging bag from sliding upward and further expand the tear of the packaging bag.
[0010] As a further embodiment of this utility model: the flared part is installed in the hollowed-out area by swinging a swing rod. The swing axis of the swing rod is horizontal and parallel to the side wall. The unidirectional flared part also includes a driving part that drives the swing rod to swing and causes the flared part to form an unfolded state.
[0011] As a further embodiment of this utility model: the driving part is a torsion spring, compression spring or tension spring that drives the swing arm to rotate outward and unfold. A first stop and a second stop are fixed on the flared guide part. The cantilever end of the swing arm faces downward and the swing path of the swing arm is located between the first stop and the second stop. When the swing arm abuts against the second stop, the flared part is in the closed state, and when the swing arm abuts against the first stop, the flared part is in the unfolded state.
[0012] As a further embodiment of this utility model: the driving unit is a cylinder, hydraulic cylinder, or lead screw slider mechanism connected to the rocker arm via a floating joint.
[0013] As a further improvement of this utility model: the flared part is a roller that is rotatably fitted at the cantilever end of the swing arm, and the axis of the roller is parallel to the swing axis of the swing arm.
[0014] As a further improvement of this utility model: the flared parts are configured as at least two that are spaced apart along the vertical direction, and the degree of unfolding of the flared parts increases sequentially along the vertically upward direction.
[0015] As a further improvement of this utility model, the flaring component is driven by a cylinder, a hydraulic cylinder, or a screw-slider mechanism to cause the flaring component to perform contraction and expansion movements.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. Unlike the traditional method of using a blade to cut open the packaging bag from the outside, this application uses a method of inserting the blade directly into the packaging bag to break it open. The blades on the tip and the angled bar achieve rapid piercing and tearing of the packaging bag, allowing it to smoothly fit around the flared guide section, forming an expanded opening. This prevents the tear from remaining on the surface or appearing as a serrated break, ensuring that the powder material smoothly enters the mixing device through the side wall perforations and the vertical passages of the flared guide section.
[0018] In addition, since the tear opening of the packaging bag is fitted around the outer periphery of the flared material guide section, the edge of the tear opening of the packaging bag is less curled. When the material is discharged and pulled upward, the friction between the outer wall of the flared material guide section and the rolled edge of the packaging bag straightens the rolled edge, so that the powder inside the bag is completely discharged without the need for secondary manual processing, reducing labor intensity and dust pollution.
[0019] 2. The flared guide section adopts an equilateral prism structure, which matches the number of diagonal bars, so that the packaging bag is subjected to uniform force during the guiding process and smoothly transitions to the outside of the flared guide section, improving operational stability.
[0020] 3. The flaring part of the one-way flaring section can prevent the packaging bag from sliding down when it is closed, and prevent the packaging bag from sliding up when it is unfolded and further expand the tear, producing an effect similar to manually shaking the bag, ensuring that the powder is completely discharged and significantly improving the discharge efficiency.
[0021] 4. The drive unit can use elastic components (such as torsion springs) or electronic control mechanisms (such as cylinders) to balance space occupation and power stability requirements, and adapt to different working conditions. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model.
[0023] Figure 2 This is a schematic diagram of the connection structure between the inclined rod and the blade in this utility model.
[0024] Figure 3 This is a structural schematic diagram of the unidirectional flared section in the unfolded state of this utility model.
[0025] Figure 4 This is a schematic diagram of the structure of the unidirectional flared part in the present invention in the closed state.
[0026] In the diagram: 10, flared guide section; 20, diagonal bar; 21, blade; 22, tip; 30, unidirectional flaring section; 31, swing arm; 32, flaring component; 33, first stop block; 34, second stop block. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings:
[0029] The specific structure of this utility model is as follows: Figure 1-4 As shown, its main structure includes a flared guide section 10 with hollowed-out sidewalls and vertically continuous, and inclined rods 20 that are distributed at an angle in a horizontal view. The inclined lower end of the inclined rod 20 is fixed at the upper opening edge of the flared guide section 10. The inclined rods 20 are configured as at least three rods evenly distributed around the vertical line where the inclined upper end is located. A blade 21 with the cutting edge facing outward and the blade body length direction is arranged along the length direction of the inclined rod 20 is vertically fixed on the outer surface of the inclined rod 20. The inclined upper end of the blade 21 is gathered to form a vertically upward pointed part 22.
[0030] Unlike the traditional method of using a blade 21 to cut open the packaging bag from the outside, this application uses a method of inserting the blade directly into the packaging bag to break it open. During operation, the powder packaging bag is hoisted to the inlet of the mixing device by a hoisting mechanism and then lowered, so that the packaging bag is pierced by the tip 22 under its own weight. Subsequently, the packaging bag continues to move downward under its own weight, and the blade 21 on the inclined bar 20 further cuts open the packaging bag, so that after the packaging bag is pierced by the tip 22, it is guided and torn by the inclined bar 20 and the blade 21, and finally smoothly fits onto the outer periphery of the flared guide section 10. At this time, the packaging bag forms an opening expanded by the flared guide section 10, and there will be no tear in the packaging bag that only stays on the surface or presents a serrated break. After the flared guide section 10 is inserted into the packaging bag, the powder material inside the packaging bag enters the flared guide section 10 through the gap between the inclined rods 20 and is then introduced into the inlet of the mixing device. In addition, some of the powder material located between the packaging bag and the flared guide section 10 enters the flared guide section 10 through the side wall cutout and then flows into the inlet of the mixing device.
[0031] Meanwhile, since the tear opening of the packaging bag is fitted around the outer periphery of the flared guide section 10, the curling degree of the tear opening edge of the packaging bag is small. Furthermore, during the process of the packaging bag being discharged and pulled upwards, the friction between the non-perforated outer wall of the flared guide section 10 and the rolled edge of the packaging bag will straighten the rolled edge of the packaging bag, thereby allowing the powder material retained in the bag to be discharged without the need for secondary processing methods such as squeezing and patting by operators. This reduces labor intensity and easily prevents dust pollution caused by the packaging bag breaking.
[0032] It should be noted that this application is fixed at the inlet of the mixing device. During installation, the bottom of the flared guide part 10 is fixed to the inlet wall of the mixing device, and there needs to be a gap between the outer periphery of the flared guide part 10 and the inner wall of the inlet of the mixing device to ensure that there is space between the outer periphery of the flared guide part 10 and the inner wall of the inlet of the mixing device for the packaging bag to be placed outside the flared guide part 10.
[0033] Based on the above, such as Figure 1 As shown, the flared guide section 10 is an equilateral prism with a hollow interior and arranged vertically. The number of side edges of the equilateral prism is the same as that of the inclined rod 20, and the inclined lower ends of the inclined rod 20 are fixed to the tops of the side edges of the equilateral prism. The equilateral prism structure of the flared guide section 10 makes the force on the outer periphery of the packaging bag more uniform from a top-down perspective during the process of being guided by the inclined rod 20 and the blade 21. This allows the packaging bag to be smoothly transitioned from the inclined rod 20 to the outside of the flared guide section 10.
[0034] Based on the above, such as Figure 1 As shown, a one-way flared section 30 is installed at the hollowed-out side wall of the flared guide section 10. The one-way flared section 30 includes a flared component 32, such as... Figure 4 As shown, the flared part 32 has a closed state that avoids the packaging bag sliding downwards by closing to the inside of the flared guide part 10, such as... Figure 3 As shown, the packaging bag is in an expanded state, extending to the outside of the flared guide section 10 to rigidly prevent the bag from sliding upwards and further expanding the tear opening. When the bag slides downwards and is fitted onto the outside of the flared guide section 10, the flared member 32 is in a closed state, thus preventing the bag from sliding downwards. Subsequently, the flared member 32 switches to an expanded state. When the bag is unloaded and removed outwards, the flared member 32 rigidly prevents the bag from sliding upwards. Under the upward pulling force of the further lifting structure, the tear opening of the bag is further expanded, causing the tear opening to produce a shaking action similar to manually shaking the bag, ensuring that the powder material inside the bag is completely emptied, further improving the discharge effect of the bag.
[0035] Based on the above, such as Figure 3 and Figure 4As shown, the flared part 32 is oscillatingly mounted in the hollowed-out area via a swing rod 31. The swing axis of the swing rod 31 is horizontal and parallel to the side wall. The unidirectional flaring part 30 also includes a driving part that drives the swing rod 31 to swing and causes the flared part 32 to be in an unfolded state. By adopting the oscillating mounting method of the swing rod 31, the lateral space occupied by the components that drive the flared part 32 to unfold and retract is reduced, ensuring the flow efficiency of the inner cavity of the flared material guide part 10.
[0036] Furthermore, the drive unit is a torsion spring, compression spring, or tension spring that drives the rocker arm 31 to rotate outwards. Additionally, such as... Figure 3 and Figure 4 As shown, a first stop block 33 and a second stop block 34 are fixed on the flared guide section 10. The cantilever end of the swing rod 31 faces downward, and the swing path of the swing rod 31 is located between the first stop block 33 and the second stop block 34. Figure 4 As shown, and when the rocker arm 31 abuts against the second stop 34, the flared part 32 is in the retracted state, as... Figure 3 As shown, when the swing arm 31 abuts against the first stop block 33, the flared part 32 is in the unfolded state, ensuring that the swing range of the swing arm 31 is limited to the required range. Using elastic elements such as torsion springs, compression springs, or tension springs for driving, compared to electric drive, occupies less space and further ensures the flow efficiency within the cavity of the flared guide section 10. However, a drawback is that when the flared part 32 switches to the closed state, the packaging bag needs to slide downwards to apply force to the flared part 32 to move towards the closed state. This can cause some tearing when the packaging bag slides downwards, ultimately reducing the shaking effect caused by further tearing when the packaging bag slides upwards.
[0037] Of course, in actual implementation, the drive unit can also adopt other implementation methods, such as a cylinder, hydraulic cylinder, or screw-slider mechanism connected to the swing arm 31 via a floating joint. The floating joint is a commonly used joint structure in the prior art, such as the two sides of the joint rod being hinged to the power end of the cylinder and the swing arm 31 respectively. This is prior art and will not be elaborated further. Although the electric drive method using cylinders, hydraulic cylinders, etc., occupies more space, its advantage is that the power to swing the swing arm 31 outward to the flared part 32 is stable, which can ensure that the flared part 32 moves stably to the unfolded state. At the same time, this electric drive method can automatically execute the switching of the flared part 32 to the closed state. Compared with the spring switching method, it can avoid certain tearing when the packaging bag slides downward, and ensure a better shaking effect caused by further tearing when the packaging bag slides upward.
[0038] Based on the above, such as Figure 1 As shown, the flared part 32 is a roller that is rotatably fitted to the cantilever end of the swing arm 31, and the axis of the roller is parallel to the swing axis of the swing arm 31, so that the packaging bag can generate rolling friction with the roller when it slides up or down, thereby reducing the resistance during the friction process between the packaging bag and the roller.
[0039] Based on the above, such as Figure 1 As shown, at least two flared parts 32 are arranged at intervals along the vertical direction, and the degree of unfolding of the flared parts 32 increases sequentially along the vertical upward direction. This causes the packaging bag to vibrate multiple times under the obstruction of multiple sets of flared parts 32 during the upward separation process from the flared guide part 10, further improving the material discharge effect of the packaging bag.
[0040] Of course, in actual implementation, the flaring member 32 does not need to be connected by the swing arm 31. It can be directly driven by a cylinder, hydraulic cylinder, or screw-slider mechanism to make the flaring member 32 produce the movement of closing and opening. Of course, the advantages of this method are the same as those of the electric drive method of the drive unit, but the disadvantage is that the electric drive method such as cylinder or hydraulic system occupies more lateral space, which reduces the throughput efficiency of the inner cavity of the flaring guide part 10.
[0041] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0043] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.
Claims
1. A puncture device for powder packaging bags, characterized in that, It includes a flared guide section (10) with a hollowed-out side wall and a through-hole design, and inclined rods (20) that are inclined in a horizontal view. The inclined rods (20) are configured as at least three rods with a circumferential gap around the vertical line where the inclined high end is located. The outer surface of the inclined rods (20) is vertically fixed with blades (21) facing outward and arranged along the length of the inclined rods (20). The inclined high end of the blades (21) converges to form a vertically upward pointed tip (22). The inclined low end of the inclined rods (20) is fixed at the upper opening edge of the flared guide section (10), so that after the packaging bag is pierced by the tip (22), it is guided and torn by the inclined rods (20) and the blades (21), and finally smoothly fitted onto the outer periphery of the flared guide section (10).
2. The powder packaging bag puncture component according to claim 1, characterized in that, The flared guide section (10) is an equilateral prism that is hollow inside and arranged vertically. The number of side edges of the equilateral prism is the same as that of the inclined rod (20), and the inclined low end of the inclined rod (20) is fixed to the top of the side edge of the equilateral prism.
3. A puncture component for powder packaging bags according to claim 1 or 2, characterized in that, A one-way flaring part (30) is installed in the hollowed-out side wall of the flaring guide part (10). The one-way flaring part (30) includes a flaring member (32). The flaring member (32) has a retracted state that is closed to the inside of the flaring guide part (10) to avoid the packaging bag from sliding downward, and an unfolded state that is unfolded to the outside of the flaring guide part (10) to rigidly prevent the packaging bag from sliding upward and further expand the tear of the packaging bag.
4. The powder packaging bag puncture component according to claim 3, characterized in that, The flared part (32) is swung and installed in the hollowed-out area by a swing rod (31). The swing axis of the swing rod (31) is horizontal and parallel to the side wall. The unidirectional flared part (30) also includes a driving part that drives the swing rod (31) to swing and causes the flared part (32) to form an unfolded state.
5. The powder packaging bag puncture component according to claim 4, characterized in that, The driving part is a torsion spring, compression spring or tension spring that drives the swing rod (31) to rotate outward and unfold. The flared guide part (10) is fixed with a first stop (33) and a second stop (34). The cantilever end of the swing rod (31) faces downward and the swing path of the swing rod (31) is located between the first stop (33) and the second stop (34). When the swing rod (31) abuts against the second stop (34), the flared part (32) is in the closed state. When the swing rod (31) abuts against the first stop (33), the flared part (32) is in the unfolded state.
6. The powder packaging bag puncture component according to claim 4, characterized in that, The drive unit is a cylinder, hydraulic cylinder, or lead screw and slider mechanism connected to the rocker arm (31) via a floating joint.
7. The powder packaging bag puncture component according to claim 4, characterized in that, The flared part (32) is a roller that is rotatably fitted on the cantilever end of the swing arm (31), and the axis of the roller is parallel to the swing axis of the swing arm (31).
8. The powder packaging bag puncture component according to claim 3, characterized in that, The flared parts (32) are arranged in at least two spaced apart along the vertical direction, and the degree of unfolding of the flared parts (32) increases sequentially along the vertical upward direction.
9. A puncture component for powder packaging bags according to claim 3, characterized in that, The flaring member (32) is driven by a cylinder, hydraulic cylinder or screw-slider mechanism to make the flaring member (32) perform the action of closing and opening.