Feeding device and blow molding machine

Abstract

The utility model discloses a feeding device and a blow molding machine, the feeding device comprises a hopper, a slag scraping unit and an impurity removing unit, and the slag scraping unit comprises a slag scraping ring; the impurity removal unit comprises an impurity removal part and a driving assembly, the impurity removal part has magnetism and is used for adsorbing iron impurities, the shape and size of the section of the impurity removal part are matched with those of the slag scraping ring, and the driving assembly is in transmission connection with the impurity removal part to drive the impurity removal part to move between the hopper and the slag scraping ring; and the impurity removal piece can penetrate through the slag scraping ring to scrape iron impurities on the surface of the impurity removal piece. The blow molding machine comprises a feeding device. Compared with the prior art, the feeding device of the blow molding machine is provided with the slag scraping ring, the driving assembly can drive the impurity removing part to penetrate through the slag scraping ring, iron impurities on the surface of the impurity removing part and attached molten plastic are scraped together, the scraping efficiency is high, only one action is needed, and the scalding danger caused by manual scraping is avoided.

Description

Technical Field

[0001] This utility model relates to the field of blow molding machine technology, specifically to a feeding device and a blow molding machine. Background Technology

[0002] Blow molding, also known as hollow blow molding, is a rapidly developing plastic processing method. A tubular plastic preform, obtained by extrusion or injection molding of thermoplastic resin, is placed in a split mold while hot (or heated to a softened state). After the mold is closed, compressed air is immediately introduced into the preform, causing it to inflate and adhere tightly to the inner wall of the mold. After cooling and demolding, various hollow products are obtained.

[0003] In blow molding production, if iron impurities are mixed into the plastic, the produced product will be scrap. Therefore, magnetic rods are usually installed in the heated hopper of the blow molding machine to remove iron impurities from the plastic. After a period of use, a layer of iron filings adheres to the surface of the magnetic rod, reducing its ability to attract subsequent iron cores. At this point, it is necessary to remove the iron filings from the surface of the magnetic rod.

[0004] Currently, specialized removal tools are lacking, and manual removal is generally used. Because the surface of the magnetic rod is still coated with molten plastic, the high temperature not only poses a danger to workers performing the removal operation but also reduces the efficiency of manual removal. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a feeding device and blow molding machine to solve the technical problem of the lack of a special tool for removing iron filings from the surface of magnetic rods in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, this utility model provides a feeding device, including: a hopper, a slag scraping unit, and a slag removal unit. The slag scraping unit includes a slag scraping ring; the slag removal unit includes a slag removal component and a driving assembly. The slag removal component is magnetic and is used to adsorb ferrous impurities. The cross-sectional shape and size of the slag removal component are matched with the slag scraping ring. The driving assembly is connected to the slag removal component to drive the slag removal component to move between the hopper and the slag scraping ring, and enables the slag removal component to pass through the slag scraping ring to scrape off ferrous impurities from the surface of the slag removal component.

[0008] In some embodiments, the slag scraping unit further includes a housing, the housing having an internal cavity with an inlet on the surface of the housing, and the slag scraping ring being disposed at the inlet.

[0009] In some embodiments, the inlet is located on the upper surface of the housing, the receiving cavity includes a slag scraping cavity and a collecting cavity, the upper end of the slag scraping cavity forms the inlet, the lower end of the slag scraping cavity communicates with the collecting cavity, and the slag scraping cavity can accommodate the impurity removal component.

[0010] In some embodiments, the scraping ring includes two opposing semi-rings, and the scraping unit further includes a telescopic mechanism, wherein at least one of the semi-rings is driven to drive the two semi-rings to move toward each other to form the scraping ring or to drive the two semi-rings to move away from each other to separate.

[0011] In some embodiments, the slag scraping unit further includes a heater arranged around the slag scraping chamber to heat the slag scraping chamber.

[0012] In some embodiments, the housing has a cleaning hatch through which the collection chamber can be opened.

[0013] In some embodiments, the upper surface of the hopper is open, the inlet is located on the upper surface of the housing, the drive assembly includes a traversing mechanism and a lifting mechanism, the traversing mechanism is capable of reciprocating between the hopper and the slag scraping unit, the traversing mechanism is connected to the lifting mechanism, and the lifting mechanism is connected to the impurity removal component.

[0014] In some embodiments, the slag scraping unit is arranged at one end of the hopper along its length, and the travel of the traverse mechanism extends from the end of the hopper away from the slag scraping unit to the slag scraping unit.

[0015] In some embodiments, the blow molding machine feeding device has a chute extending from one side of the hopper to one side of the housing, and the transverse mechanism is connected to the chute and can reciprocate along the chute.

[0016] Secondly, this utility model provides a blow molding machine, including a feeding device.

[0017] Compared with the prior art, the feeding device provided by this utility model has a slag scraping ring. The driving component can drive the impurity removal part to pass through the slag scraping ring and scrape off the iron impurities on the surface of the impurity removal part together with the attached molten plastic. Not only is the scraping efficiency high, requiring only one action, but it also avoids the risk of burns caused by manual scraping. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the feeding device provided in an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Cross-sectional view of the slag scraping unit. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] To address the current lack of specialized tools for removing iron filings from the surface of magnetic rods, this invention provides a blow molding machine feeding device that can automatically remove iron impurities from the surface of parts, replacing manual labor.

[0022] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a blow molding machine feeding device in one embodiment of the present invention. The blow molding machine feeding device includes: a hopper 1, a slag scraping unit 2, and a slag removal unit 3.

[0023] The hopper 1 is used to heat the plastic. The slag scraping unit 2 includes a slag scraping ring 21.

[0024] The impurity removal unit 3 includes an impurity removal component 31 and a drive assembly 32. The impurity removal component 31 is magnetic and is used to adsorb ferrous impurities in the plastic. The cross-sectional shape and size of the impurity removal component 32 match the scraper ring 21, allowing it to abut against the inner wall of the scraper ring 21 and pass through it. The drive assembly 32 is connected to the impurity removal component 31 to drive the impurity removal component 31 to move between the hopper 1 and the scraper ring 21, and allows the impurity removal component 31 to pass through the scraper ring 21 to scrape away ferrous impurities from its surface.

[0025] The impurity remover 31 adsorbs iron impurities from the plastic in the hopper 1. When there are enough iron impurities on the surface of the impurity remover 31, the drive assembly 32 drives the impurity remover 31 through the scraper ring 21 to scrape off the iron filings on the surface. Then the impurity remover 31 is moved back to the hopper to continue adsorbing iron impurities. Those skilled in the art can determine when to scrape off the iron filings based on experience or by periodically cleaning the material.

[0026] In some embodiments, the upper surface of the hopper 1 is open and has a heating function for heating the plastic. Preferably, a movable cover plate can also be provided at the open end to prevent sand, dust, or other impurities from falling into the hopper 1. The cover plate should be designed to avoid interfering with the movement trajectory of the impurity removal component 31.

[0027] In this embodiment, the hopper 1 has a rectangular structure, and the slag scraping unit 2 is located at one end of the rectangle along its length.

[0028] In some embodiments, the slag scraper ring 21 has a circular structure, the debris removal component 31 has a cylindrical structure, and the inner diameter of the slag scraper ring 21 is equal to the outer diameter of the debris removal component 31.

[0029] Please see Figure 2 , Figure 2 yes Figure 1 A cross-sectional view of the slag scraping unit 2. In some embodiments, the slag scraping unit 2 further includes a housing 22, inside which a receiving cavity 23 is formed. An inlet is formed on the surface of the receiving cavity 23, and a slag scraping ring 21 is arranged at the inlet. The receiving cavity 23 is used to receive iron filings and molten plastic scraped from the surface of the cleaning component 31, and its shape is preferably a corresponding cylindrical structure.

[0030] In a preferred embodiment, the inlet is located on the upper surface of the housing 22, and the receiving cavity 23 includes a slag scraping cavity 231 and a collecting cavity 232. The upper end of the slag scraping cavity 231 forms an inlet, and the lower end of the slag scraping cavity 231 is connected to the collecting cavity 232. The slag scraping cavity 231 can accommodate the impurity removal component 31.

[0031] In some embodiments, the housing 22 has a cleaning door 221, through which the collection chamber 232 can be opened to clean the plastic and iron filings inside.

[0032] In some embodiments, the scraping ring 21 includes two oppositely arranged semi-rings 211, and the scraping unit 2 further includes a telescopic mechanism 24, which is driven to at least one semi-ring 211 to drive the two semi-rings 211 to move toward each other to form the scraping ring 21 or to drive the two semi-rings 211 to move away from each other to separate.

[0033] When scraping off iron filings, the two semi-rings 211 first separate. The drive assembly 32 moves the cleaning component 31 into the scraping chamber 231. Then, the telescopic mechanism 24 drives the two semi-rings 211 to close, and the scraping ring 21 formed by the two semi-rings 211 clamps the upper end of the cleaning component 31. Then, the drive assembly 32 pulls the cleaning component 31 out of the scraping chamber 231. The iron filings and molten plastic on the surface of the cleaning component 31 are scraped off by the scraping ring 21 and drip down or flow along the inner wall of the scraping chamber 231 into the collection chamber 232.

[0034] In this embodiment, two telescopic mechanisms 24 are respectively connected to two semi-rings 211, driving the two semi-rings 211 to move synchronously. In other embodiments, one semi-ring 211 may be fixedly connected to the housing 22, and the telescopic mechanism 24 may drive the other semi-ring 211 to move. The telescopic mechanism 24 may be a cylinder, an electric push rod, or any other device capable of telescopic movement.

[0035] In some embodiments, the scraping unit 2 further includes a heater 25, which is arranged around the scraping chamber 231 to heat the scraping chamber 231. The heater 25 can prevent the plastic from solidifying in the scraping chamber 231 and clogging it. In some embodiments, if the plastic is easy to clean after solidification, the heater 25 is not provided at the collection chamber 232, allowing the plastic to cool and solidify naturally. In other embodiments, if the plastic is inconvenient to clean after solidification, the heater 25 is also provided around the collection chamber 232 to keep the plastic in a molten state, or the collection chamber 232 is heated before heating to melt the plastic therein.

[0036] In some embodiments, the impurity removal component 31 has an electromagnet built into it. On the one hand, when energized, it generates magnetism, attracting iron impurities in the plastic. On the other hand, when the impurity removal component 31 is located in the slag scraping chamber 231, the electromagnet is de-energized, making it easier to scrape off the iron filings.

[0037] Obviously, the number of the cleaning components 31 can be one or more, and the number and relative position of the slag scraping rings 21 and slag scraping chambers 231 correspond one-to-one with the cleaning components 31.

[0038] In some embodiments, the drive assembly 32 includes a traversing mechanism 321 and a lifting mechanism 322. The traversing mechanism 321 is capable of reciprocating between the hopper 1 and the scraping unit 2. The traversing mechanism 321 is connected to the lifting mechanism 322, and the lifting mechanism 322 is connected to the cleaning component 31. The traversing mechanism 321 can be a trolley, a cylinder, a screw and nut mechanism, an electric push rod, etc., as long as it can achieve reciprocating motion. The lifting mechanism 322 can also be a cylinder, a hydraulic cylinder, etc., as long as it can achieve lifting motion.

[0039] In some embodiments, the slag scraping unit 2 is arranged at one end of the length direction of the hopper 1, and the travel stroke of the transverse mechanism 321 extends from the end of the hopper 1 away from the slag scraping unit 2 to the slag scraping unit 2. Obviously, the transverse mechanism 321 can also drive the impurity removal component 31 to reciprocate within the hopper 1 to achieve the stirring function.

[0040] In some embodiments, the blow molding machine feeding device has a chute 4 that extends from one side of the hopper 1 to one side of the housing 22. The transverse mechanism 321 is connected to the chute 4 and can reciprocate along the chute 4.

[0041] When scraping is required, the lifting mechanism 322 moves the impurity removal component 31 above the hopper 1. Then, the lateral movement mechanism 321 moves the impurity removal component 31 above the corresponding scraping chamber 231. The lifting mechanism 322 then lowers the impurity removal component 31 into the scraping chamber 231. The telescopic mechanism 24 drives the two semi-rings 211 to close and clamp the upper end of the impurity removal component 31. The lifting mechanism 322 then pulls the impurity removal component 31 out of the scraping ring 21, scraping away the iron filings on the surface. Finally, the lateral movement mechanism 321 and the lifting mechanism 322 move the impurity removal component 31 back to the hopper 1 to continue removing iron impurities from the plastic.

[0042] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A feeding device, characterized in that, include: hopper; A slag scraping unit, which includes a slag scraping ring; The impurity removal unit includes an impurity removal component and a drive assembly. The impurity removal component is magnetic and is used to adsorb ferrous impurities. The cross-sectional shape and size of the impurity removal component are matched with the slag scraper ring. The drive assembly is connected to the impurity removal component to drive the impurity removal component to move between the hopper and the slag scraper ring, and enables the impurity removal component to pass through the slag scraper ring to scrape off the ferrous impurities on the surface of the impurity removal component.

2. The feeding device according to claim 1, characterized in that, The slag scraping unit also includes a housing, inside which a receiving cavity is formed, and an inlet is formed on the surface of the housing, with the slag scraping ring arranged at the inlet.

3. The feeding device according to claim 2, characterized in that, The inlet is located on the upper surface of the housing. The receiving cavity includes a slag scraping cavity and a collection cavity. The inlet is formed at the upper end of the slag scraping cavity, and the collection cavity is connected at the lower end of the slag scraping cavity. The slag scraping cavity can accommodate the impurity removal component.

4. The feeding device according to claim 1, characterized in that, The scraping ring includes two opposing semi-rings, and the scraping unit further includes a telescopic mechanism. The telescopic mechanism is driven to at least one of the semi-rings to drive the two semi-rings to move toward each other to form the scraping ring or to drive the two semi-rings to move away from each other to separate.

5. The feeding device according to claim 3, characterized in that, The slag scraping unit also includes a heater arranged around the slag scraping chamber to heat the slag scraping chamber.

6. The feeding device according to claim 3, characterized in that, The housing has a cleaning hatch through which the collection chamber can be opened.

7. The feeding device according to claim 2, characterized in that, The upper surface of the hopper is open, the inlet is located on the upper surface of the housing, the drive assembly includes a lateral movement mechanism and a lifting mechanism, the lateral movement mechanism is capable of reciprocating between the hopper and the slag scraping unit, the lateral movement mechanism is connected to the lifting mechanism, and the lifting mechanism is connected to the impurity removal component.

8. The feeding device according to claim 7, characterized in that, The slag scraping unit is arranged at one end of the length direction of the hopper, and the travel of the transverse mechanism extends from the end of the hopper away from the slag scraping unit to the slag scraping unit.

9. The feeding device according to claim 8, characterized in that, The feeding device has a chute that extends from one side of the hopper to one side of the housing. The transverse mechanism is connected to the chute and can reciprocate along the chute.

10. A blow molding machine, characterized in that, It includes the feeding device as described in any one of claims 1-9.

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