Feeding barrel structure for film blowing machine and film blowing machine

Abstract

The utility model relates to the technical field of film blowing machines, and discloses a charging bucket structure for a film blowing machine and the film blowing machine, the charging bucket structure can output fed granules to an extrusion device, and comprises a charging bucket main body, a charging bucket cover, a charging bucket cover and a charging bucket cover, the adsorption device is arranged in the charging basket main body and is close to the feeding end, the adsorption device comprises a plurality of magnetic bars, the plurality of magnetic bars are arranged in multiple layers and are arranged in the charging basket main body, and a gap through which granules can pass is formed between every two adjacent magnetic bars; when granules are fed into the charging basket main body from the feeding end, the granules can penetrate through the gap to flow to the discharging end, and the magnetic bar can adsorb iron impurities in the granules. The feeding barrel structure has the advantages that iron impurities such as scrap iron or iron sheets in granules can be removed, the product quality is ensured, and a screw of an extrusion device is protected from being abraded by the iron impurities.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machines, in particular to a feeding barrel structure for a film blowing machine and the film blowing machine. Background Art

[0002] The most common film packaging bags used by pharmaceutical companies are low-density polyethylene plastic bags, which are generally manufactured by blown film.

[0003] During the blown film production process, impurities such as iron chips and shavings can easily enter the pellets. These impurities primarily originate from: the pellets themselves, scrap iron falling from the barrel, and loose screws and bolts that attach to the barrel. The presence of these impurities not only results in substandard blown film products but can also damage the screw during extrusion, even clogging the die and ultimately preventing production. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a feeding barrel structure for a film blowing machine, which can remove impurities such as iron filings or iron flakes in granular materials, and a film blowing machine.

[0005] The technical solution adopted by the utility model to solve the technical problem is to propose a feeding barrel structure for a film blowing machine, which can output the fed pellets to the extrusion device, including:

[0006] The barrel body has a feed end and a discharge end;

[0007] An adsorption device is disposed in the barrel body and near the feed end, the adsorption device comprising a plurality of magnetic rods, the plurality of magnetic rods being arranged in multiple layers in the barrel body, with a gap between two adjacent magnetic rods for the granular material to pass through;

[0008] When pellets are fed into the barrel body from the feed end, the pellets can flow through the gap toward the discharge end, and the magnetic rod can adsorb iron impurities in the pellets.

[0009] Furthermore, each layer of the magnetic bars starting from the second layer includes a plurality of the magnetic bars, and the gaps formed by the plurality of the magnetic bars in the upper layer and the gaps formed by the plurality of the magnetic bars in the lower layer are staggered.

[0010] Furthermore, the number of the magnetic rods in each layer increases from top to bottom.

[0011] Furthermore, the adsorption device also includes a mounting bracket, the mounting bracket is fixedly connected to the plurality of magnetic rods, and the mounting bracket or the magnetic rods are in contact with the inner wall of the barrel body.

[0012] Furthermore, the barrel body has a tapered barrel body between the feed end and the discharge end, and the cross-sectional area of ​​the barrel body gradually decreases from top to bottom.

[0013] Furthermore, a feed pipe is provided at the feed end of the barrel body, and the feed pipe is communicated with the feed end, and the pellets can be input into the feed end through the feed pipe.

[0014] Furthermore, the feed end has an opening, and a cover plate is provided on the opening, and the cover plate is detachably covered on the opening.

[0015] Furthermore, the adsorption device is detachably arranged in the barrel body, and the adsorption device is installed into the barrel body from the opening, or is removed from the opening.

[0016] The technical solution adopted by the present invention to solve the technical problem is to provide a film blowing machine, comprising:

[0017] A connected extrusion device and support frame;

[0018] The above-mentioned feeding barrel structure for the film blowing machine, wherein the barrel body is arranged on the extrusion device, and the discharge end of the barrel body is connected to the extrusion device;

[0019] The blow molding mold is arranged on the supporting frame and is communicated with the extrusion device.

[0020] Furthermore, an output roller is provided on the support frame, and the output roller is arranged close to the blow mold.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] In the present invention, an adsorption device is provided in the barrel body. The adsorption device includes a plurality of magnetic rods arranged in multiple layers, with gaps between adjacent magnetic rods for pellets to pass through. After pellets are input into the barrel body, they can be smoothly transported to the output end through the gaps between the magnetic rods. Iron impurities in the pellets are adsorbed by the magnetic rods, ensuring that iron impurities are not mixed into the pellets and transported to the extruder. This ensures the qualified rate of blown film and prevents the screw from being worn by iron impurities. The gaps between adjacent layers of magnetic rods are staggered, ensuring sufficient contact area between the pellets and the magnetic rods, thereby ensuring that iron impurities in the pellets are completely removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the feeding barrel structure in Example 1 of the present utility model;

[0024] Figure 2 is a planar schematic diagram of the adsorption device;

[0025] Figure 3 This is a structural diagram of the film blowing machine in Example 2 of the present utility model.

[0026] In the picture:

[0027] 1. Barrel body; 11. Feed end; 110. Opening; 12. Discharge end; 13. Barrel body; 14. Cover plate;

[0028] 2. Adsorption device; 21. Magnetic rod; 22. Mounting bracket; 220. Gap;

[0029] 3. Feed pipe;

[0030] 4. Extrusion device;

[0031] 5. Support frame;

[0032] 61. Die head; 62. Die opening;

[0033] 7. Output roller. DETAILED DESCRIPTION

[0034] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0039] Example 1:

[0040] like Figure 1-Figure 2 and combined Figure 3 As shown, a feeding barrel structure for a film blowing machine can output the fed pellets to an extrusion device 4, which mainly includes: a barrel body 1, an adsorption device 2 and a feeding pipe 3.

[0041] The barrel body 1 has a feed end 11 and a discharge end 12. The feed end 11 is located at the upper end of the barrel body 1, and the discharge end 12 is located at the lower end of the barrel body 1. The diameter of the feed end 11 is larger than the diameter of the discharge end 12. Specifically, a feed pipe 3 is provided at the feed end 11 of the barrel body 1. The feed pipe 3 is connected to the feed end 11, and pellets can be input into the feed end 11 through the feed pipe 3. That is, external pellets can be sucked into the feed end 11 through the feed pipe 3. In addition, the barrel body 1 has a tapered barrel body 13 between the feed end 11 and the discharge end 12. The cross-sectional area of ​​the barrel body 13 gradually decreases from top to bottom. The tapered barrel body 13 facilitates the collection and discharge of pellets from the discharge end. The large diameter of the feed end 11 facilitates operation.

[0042] The adsorption device 2 is disposed within the barrel body 1, near the feed end 11. It includes a plurality of magnetic rods 21, i.e., permanent magnets with strong magnetic properties. The plurality of magnetic rods 21 are arranged in multiple layers within the barrel body 1, with gaps 220 between adjacent magnetic rods 21 for pellets to pass through. During use, when pellets are fed from the feed end 11 into the barrel body 1, they flow through these gaps 220 toward the discharge end 12. The magnetic rods 21 adsorb iron impurities in the pellets, removing them and preventing them from flowing into the extruder 4.

[0043] Specifically, in this embodiment, the magnetic rods 21 of the adsorption device 2 are arranged in multiple layers, with four layers shown in the figure, but it is not limited to four layers. From top to bottom, each layer of magnetic rods 21 starting from the second layer includes multiple magnetic rods 21, and the gaps 220 formed by the multiple magnetic rods 21 in the upper layer are staggered with the gaps 220 formed by the multiple magnetic rods 21 in the lower layer, that is, the gaps 220 in the upper and lower layers are staggered, ensuring that the granular material will fully contact the magnetic rods 21 during flow, preventing iron impurities from flowing downward into the extrusion device 4. In the adsorption device 2 of this embodiment, the number of magnetic rods 21 in each layer increases from top to bottom.

[0044] During actual use, this embodiment provides an adsorption device 2 in the barrel body 1. The adsorption device 2 includes a plurality of magnetic rods 21, and the plurality of magnetic rods 21 are arranged in multiple layers, with a gap 220 between two adjacent magnetic rods 21 for the granules to pass through. After the granules are input into the barrel body 1, the granules can be smoothly transported to the output end through the gap 220 between the magnetic rods 21, and the iron impurities in the granules will be adsorbed by the magnetic rods 21, ensuring that the iron impurities will not be mixed into the granules and transported to the extrusion device 4, thereby ensuring the qualified rate of the blown film and preventing the screw from being worn by the iron impurities. Among them, the gap 220 between the two adjacent layers of magnetic rods 21 is staggered, which can ensure that the granules have sufficient contact area with the magnetic rods 21, thereby ensuring that the iron impurities in the granules can be completely removed.

[0045] Among them, the adsorption device 2 also includes a mounting bracket 22, and the mounting bracket 22 is fixedly connected to the multiple magnetic rods 21. The mounting bracket 22 is a mounting plate, and can be a plurality of mounting plates arranged side by side. The multiple magnetic rods 21 are fixedly mounted on the mounting plate, and the mounting bracket 22 or the magnetic rods 21 are against the inner wall of the barrel body 1. During use, the adsorption device 2 is directly placed into the barrel body 1, and the inner wall of the barrel body 1 limits the adsorption device 2, making it easy to take and put. There is an opening 110 at the feed end 11 of the barrel body 1, and a cover plate 14 is provided on the opening 110. The cover plate 14 is detachably covered on the opening 110. In addition, the adsorption device 2 of this embodiment is detachably arranged in the barrel body 1, and the adsorption device 2 is loaded into the barrel body 1 from the opening 110, or is removed from the opening 110. After a certain number of molds have been made or after a certain period of time, the cover 14 can be opened, the adsorption device 2 can be taken out from the opening 110, and the iron impurities adsorbed on the magnetic rod 21 can be cleaned. After cleaning, the adsorption device 2 can be placed into the barrel body 1 along the opening 110, and then the cover 14 can be closed.

[0046] Example 2:

[0047] like Figure 3 As shown, a film blowing machine mainly includes:

[0048] The extruder 4 and the support frame 5 are connected. The extruder 4 can melt the pellets input from the barrel body 1 and convey them forward. The extruder 4 is provided with a screw and a heater. The rotation of the screw can extrude the pellets. The support frame 5 serves as the support frame of the entire film blowing machine.

[0049] In the feeding barrel structure for the film blowing machine in the first embodiment, the barrel body 1 is arranged on the extrusion device 4, and the discharge end 12 of the barrel body 1 is connected to the extrusion device 4;

[0050] The blow mold is mounted on a support frame 5 and is connected to the extruder 4. The blow mold has a die head 61 and a die opening 62. Furthermore, an output roller 7 is provided on the support frame 5 and is disposed close to the blow mold. The output roller 7 delivers the blown plastic film to a winding device for winding the blown plastic film.

[0051] In this solution, the feeding barrel can remove iron impurities in the pellets to ensure product quality and protect the screw of the extruder 4 from being worn by the iron impurities.

Claims

1. A feeding barrel structure for a film blowing machine, which can output the fed pellets to an extruder, characterized in that: include: The barrel body has a feed end and a discharge end; An adsorption device is arranged in the barrel body and close to the feed end, the adsorption device comprises a plurality of magnetic bars, the plurality of magnetic bars are arranged in multiple layers in the barrel body, and there is a gap between two adjacent magnetic bars for the granular material to pass through; When pellets are fed from the feed end into the barrel body, the pellets may flow through the gap toward the discharge end, and the magnetic bar may adsorb iron impurities in the pellets.

2. The feeding barrel structure for the film blowing machine according to claim 1 is characterized in that: Each layer of magnetic bars starting from the second layer includes a plurality of magnetic bars, and the gaps formed by the plurality of magnetic bars in the previous layer and the gaps formed by the plurality of magnetic bars in the next layer are arranged in a staggered manner.

3. The feeding barrel structure for the film blowing machine according to claim 2 is characterized in that: The number of the magnetic rods in each layer increases from top to bottom.

4. The feeding barrel structure for a film blowing machine according to claim 1, 2 or 3, characterized in that: The adsorption device further comprises a mounting bracket, the mounting bracket is fixedly connected to the plurality of magnetic bars, and the mounting bracket or the magnetic bars abut against the inner wall of the barrel body.

5. The feeding barrel structure for a film blowing machine according to claim 1, characterized in that: The barrel body has a tapered barrel body between the feed end and the discharge end, and the cross-sectional area of ​​the barrel body gradually decreases from top to bottom.

6. The feeding barrel structure for a film blowing machine according to claim 1, characterized in that: A feed pipe is provided at the feed end of the barrel body, and the feed pipe is communicated with the feed end, and the pellets can be input into the feed end from the feed pipe.

7. The feeding barrel structure for a film blowing machine according to claim 1 or 6, characterized in that: The feed end has an opening, and a cover plate is arranged on the opening. The cover plate is detachably covered on the opening.

8. The feeding barrel structure for a film blowing machine according to claim 7, characterized in that: The adsorption device is detachably arranged in the barrel body, and the adsorption device is installed into the barrel body from the opening, or is removed from the opening.

9. A film blowing machine, characterized in that: include: A connected extrusion device and support frame; The feeding barrel structure for a film blowing machine according to any one of claims 1 to 8, wherein the barrel body is arranged on the extrusion device, and the discharge end of the barrel body is connected to the extrusion device; The blow molding mold is arranged on the supporting frame and is connected with the extrusion device.

10. The film blowing machine according to claim 9, characterized in that: An output roller is also provided on the support frame, and the output roller is arranged close to the blow mold.

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