In-mold cutting die for processing crisper lid

Abstract

The utility model relates to the technical field of fresh -keeping box cover processing uses technology field, disclose fresh -keeping box cover processing uses mould cutting mould, including mould, the inside of mould is provided with mould cutting mould, the inside of mould cutting mould is provided with spring dismounting assembly, the bottom of mould cutting mould is provided with oil cylinder, the inside of mould cutting mould is provided with thimble, the top of mould cutting mould is provided with cutter, the outer wall of cutter is provided with lubricating component, lubricating component includes guide bush, the inside of guide bush has set up the slot hole, the inside sliding connection of slot hole has snap ring. In the utility model, through setting up guide bush, slot hole, snap ring, snap ring slides along the slot hole of guide bush, drives filter cloth to always stick to cutter, supplies lubricating oil, reduces the friction resistance in cutting process, promotes processing efficiency, filter cloth filters the impurity in lubricating oil, reduces the wear and tear of cutter, prolongs the life remarkably, reduces the maintenance cost of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of food storage box lid processing, and in particular to an in-mold cutting die for food storage box lid processing. Background Technology

[0002] In the traditional production of food storage container lids, the "injection molding-trimming separation" process, which relies on manual or equipment trimming in the later stages, has many drawbacks. On the one hand, secondary processing is prone to defects such as burrs and missing corners due to positioning deviations, resulting in a high product defect rate that directly affects sealing and appearance. On the other hand, the multi-process flow not only increases logistics and warehousing costs but also introduces hygiene risks, making it difficult to meet the cleanliness requirements of food contact utensils.

[0003] To overcome these bottlenecks, in-mold cutting technology combines ultra-high pressure drive with soft cutting and intelligent timing control to directly separate the gate before the plastic cools down after pressure holding, achieving integrated molding and precision cutting. This technology not only ensures smooth and defect-free edges but also significantly reduces subsequent steps, improving production efficiency and product consistency while effectively controlling overall costs. It provides a higher-quality production solution that better meets hygiene and safety requirements for the precision injection molding field.

[0004] Although the above-mentioned technology achieves hot separation of the gate after plastic pressure holding, it usually does not have a lubrication device, which affects the service life of the cutter and the processing efficiency, and is not very convenient to use. Therefore, an in-mold cutting die for processing food storage box lids is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an in-mold cutting die for processing food storage box lids, which aims to improve the problem that the existing technology usually does not have a lubrication device, thus affecting the service life of the cutter and processing efficiency, and making it less convenient to use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an in-mold cutting mold for processing food storage box lids, comprising a mold, an in-mold cutting mold disposed inside the mold, a spring disassembly assembly disposed inside the in-mold cutting mold, an oil cylinder disposed at the bottom of the in-mold cutting mold, an ejector pin disposed inside the in-mold cutting mold, a cutter disposed at the top of the in-mold cutting mold, and a lubrication assembly disposed on the outer wall of the cutter; The lubrication assembly includes a guide sleeve with a groove inside. A retaining ring is slidably connected inside the groove. A column is fixedly connected to the top of the retaining ring. A fixing column is fixedly connected to the top of the column. A filter cloth is fixedly connected to the outer wall of the guide sleeve. An elastic retaining ring is fixedly connected to the outer wall of the column.

[0007] As a further description of the above technical solution: The filter cloth is provided in multiple sets, and the multiple sets of filter cloth are distributed in a ring along the central axis of the guide sleeve.

[0008] As a further description of the above technical solution: The outer wall of the column is slidably connected to the inside of the slot.

[0009] As a further description of the above technical solution: The outer wall of the elastic retaining ring is engaged with the top of the guide sleeve.

[0010] As a further description of the above technical solution: The column is provided in multiple sets, and the multiple sets of columns are distributed in a ring along the central axis of the guide sleeve.

[0011] As a further description of the above technical solution: The spring disassembly assembly includes an elastic sheet, a threaded sleeve is fixedly connected to the bottom outer wall of the elastic sheet, a ring is fixedly connected to the top of the elastic sheet, and a guide roller is fixedly connected to the outer wall of the ring.

[0012] As a further description of the above technical solution: The outer wall of the elastic sheet is threadedly connected to the top of the horizontal plate of the in-mold cutting die.

[0013] As a further description of the above technical solution: The outer wall of the guide roller is slidably connected to the inside of the mold parts.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by setting a guide sleeve, a groove, and a retaining ring, the retaining ring slides along the groove of the guide sleeve, causing the filter cloth to always be in contact with the cutter, supplying lubricating oil, reducing frictional resistance during the cutting process, improving processing efficiency, filtering impurities in the lubricating oil with the filter cloth, reducing wear on the cutter, significantly extending service life, and reducing equipment maintenance costs.

[0015] 2. In this utility model, by setting up an elastic sheet, a threaded sleeve, and a ring, quick disassembly can be completed by rotating the elastic sheet without the need for complicated tools, which facilitates the inspection and replacement of moving parts such as guide rollers and ensures the long-term stable operation of the mold. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the in-mold cutting die for processing food storage box lids proposed in this utility model. Figure 2 This is a schematic diagram of the internal structure of the in-mold cutting die for processing food storage box lids proposed in this utility model. Figure 3 This is a schematic diagram of the spring disassembly assembly of the in-mold cutting die for processing food storage box lids proposed in this utility model. Figure 4 The in-mold cutting die for processing food storage box lids proposed in this utility model Figure 3 Enlarged structural diagram of point A in the middle; Figure 5 This is a schematic diagram of the lubrication assembly of the in-mold cutting die for processing food storage box lids proposed in this utility model.

[0017] Legend: 1. Mold; 2. In-mold cutting mold; 3. Spring disassembly assembly; 31. Elastic sheet; 32. Threaded sleeve; 33. Ring; 34. Guide roller; 4. Lubrication assembly; 41. Guide sleeve; 42. Groove; 43. Snap ring; 44. Column; 45. Elastic snap ring; 46. Fixed column; 47. Filter cloth; 5. Cutter; 6. Hydraulic cylinder; 7. Ejector pin. Detailed Implementation

[0018] 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.

[0019] Reference Figures 1-3 This utility model provides an embodiment of an in-mold cutting mold for processing food storage box lids, including a mold 1. The mold 1 has an in-mold cutting mold 2 inside. The in-mold cutting mold 2 is the core cutting execution component of the whole set of equipment, integrating multiple functions such as cutting and positioning. It is a key unit for achieving precise processing of food storage box lids. The in-mold cutting mold 2 has a spring disassembly assembly 3 inside. The bottom of the in-mold cutting mold 2 has a hydraulic cylinder 6. The hydraulic cylinder 6 is the core power source for the up and down movement of the in-mold cutting mold 2. It outputs a stable thrust through the pressure change of hydraulic oil, which can accurately control the movement speed and stroke of the in-mold cutting mold 2. The in-mold cutting mold 2 has an ejector pin 7 inside. The ejector pin 7 is made of high-strength alloy material. After cutting, it can extend smoothly along a preset trajectory. The top of the in-mold cutting mold 2 has a cutter 5. The cutter 5 is made of hard alloy material and is precision ground. It has a sharp and wear-resistant cutting edge. It can directly contact raw materials such as plastic and complete the in-mold cutting and trimming of food storage box lids. The outer wall of the cutter 5 has a lubrication assembly 4. Reference Figure 3 , Figure 5The lubrication assembly 4 includes a guide sleeve 41, which is made of wear-resistant engineering plastic with a polished inner wall. A groove 42 is formed inside the guide sleeve 41, and a retaining ring 43 is slidably connected inside the groove 42. The retaining ring 43 is a ring-shaped metal structure; its inner diameter fits tightly with the column 44, and its outer diameter has a clearance fit with the inner wall of the groove 42. It can slide flexibly within the groove 42 and drive the column 44 to move up and down synchronously. The top of the retaining ring 43 is fixedly connected to the column 44, and the top of the column 44 is fixedly connected to... A fixed column 46 is provided, and a filter cloth 47 is fixedly connected to the outer wall of the guide sleeve 41. The filter cloth 47 is made of ultra-fine fiber material that combines oil absorption and filtration, which can fully absorb and store lubricating oil, and evenly transfer the oil to the surface of the cutter 5 when moving with the cutter 5. An elastic retaining ring 45 is fixedly connected to the outer wall of the column 44. Multiple sets of filter cloth 47 are provided, and the multiple sets of filter cloth 47 are distributed in a ring along the central axis of the guide sleeve 41. When the mold is closed, the hydraulic cylinder 6 drives the in-mold cutting mold 2 to move downward, and the guide roller 34 assists in guiding and preventing deviation. As the in-mold cutting mold 2 moves downward, its top cutter 5 contacts the material and completes the in-mold cutting of the food storage box lid. During the cutting, the lubrication component 4 works synchronously: the retaining ring 43 slides along the groove 42 of the guide sleeve 41, so that the column 44 drives the filter cloth 47 to always be in contact with the cutter 5. The filter cloth 47 transfers the absorbed lubricating oil to the cutter 5, reducing friction, improving efficiency and extending the blade life, while filtering impurities; the elastic retaining ring 45 prevents the component from loosening.

[0020] Reference Figure 2 , Figure 4 , Figure 5The outer wall of the column 44 is slidably connected to the inside of the slot 42. The outer wall of the elastic retaining ring 45 is engaged with the top of the guide sleeve 41. The elastic deformation of the elastic retaining ring 45 generates radial pressure, achieving a tight engagement with the top of the guide sleeve 41. Multiple sets of columns 44 are provided, and the multiple sets of columns 44 are distributed in a ring along the central axis of the guide sleeve 41. The spring disassembly assembly 3 includes an elastic plate 31. A threaded sleeve 32 is fixedly connected to the bottom outer wall of the elastic plate 31. The threaded sleeve 32 has an internal thread structure and is welded and fixed to the bottom of the elastic plate 31. It can precisely match the external thread on the horizontal plate of the die-cutting mold 2. A ring 33 is fixedly connected to the top of the elastic plate 31. The outer wall of the ring 33 is fixedly connected to... Guide roller 34 is embedded in the pre-set guide rail of mold 1. The sliding cooperation between the roller and the rail restricts the movement direction of the in-mold cutting mold 2, ensuring accurate positioning of the in-mold cutting mold 2 during up and down movement and avoiding offset that would cause processing errors. The outer wall of the elastic plate 31 is threadedly connected to the top of the horizontal plate of the in-mold cutting mold 2. The outer wall of the guide roller 34 is slidably connected to the inside of the part of mold 1. The spring removal assembly 3 of the in-mold cutting mold 2 is positioned: the elastic plate 31 is fixed to the horizontal plate of the in-mold cutting mold 2 by threads, and the guide roller 34 is embedded in the part of mold 1 to ensure stable movement. After cutting, the hydraulic cylinder 6 drives the in-mold cutting mold 2 to move upward and reset, and the ejector pin 7 pushes out the workpiece for material removal. During maintenance, the spring removal assembly 3 can be quickly removed by rotating the elastic plate 31, and the filter cloth 47 can be replaced by releasing the elastic retaining ring 45 of the lubrication assembly 4. The operation is convenient.

[0021] Working Principle: During use, when the mold is closed, the hydraulic cylinder 6 drives the in-mold cutting mold 2 downwards, and the guide roller 34 assists in guiding and preventing deviation. As the in-mold cutting mold 2 descends, its top cutter 5 contacts the material and completes the in-mold cutting of the food storage box lid. During cutting, the lubrication component 4 works synchronously: the retaining ring 43 slides along the groove 42 of the guide sleeve 41, so that the column 44 drives the filter cloth 47 to always be in contact with the cutter 5. The filter cloth 47 transfers the absorbed lubricating oil to the cutter 5, reducing friction, improving efficiency, and extending the blade life, while filtering impurities; the elastic retaining ring 45 prevents the component from loosening. The spring disassembly component 3 of the in-mold cutting mold 2 is positioned: the elastic plate 31 is fixed to the horizontal plate of the in-mold cutting mold 2 by threads, and the guide roller 34 is embedded in the mold 1 parts to ensure stable movement. After cutting is completed, the hydraulic cylinder 6 drives the in-mold cutting mold 2 to move upwards to reset, and the ejector pin 7 pushes the workpiece out for material removal. During maintenance, the spring removal assembly 3 can be quickly disassembled by rotating the elastic plate 31, and the filter cloth 47 can be replaced by releasing the elastic retaining ring 45 of the lubrication assembly 4, making the operation convenient.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An in-mold cutting die for processing food storage container lids, comprising a die (1), characterized in that: The mold (1) is provided with an in-mold cutting mold (2) inside, the in-mold cutting mold (2) is provided with a spring disassembly assembly (3) inside, the bottom of the in-mold cutting mold (2) is provided with an oil cylinder (6), the inside of the in-mold cutting mold (2) is provided with an ejector pin (7), the top of the in-mold cutting mold (2) is provided with a cutter (5), and the outer wall of the cutter (5) is provided with a lubrication assembly (4). The lubrication assembly (4) includes a guide sleeve (41), the inside of which is provided with a groove (42), a retaining ring (43) is slidably connected inside the groove (42), a column (44) is fixedly connected to the top of the retaining ring (43), a fixing column (46) is fixedly connected to the top of the column (44), a filter cloth (47) is fixedly connected to the outer wall of the guide sleeve (41), and an elastic retaining ring (45) is fixedly connected to the outer wall of the column (44).

2. The in-mold cutting die for processing food storage box lids according to claim 1, characterized in that: The filter cloth (47) is provided in multiple sets, and the multiple sets of filter cloth (47) are distributed in a ring along the central axis of the guide sleeve (41).

3. The in-mold cutting die for processing food storage box lids according to claim 1, characterized in that: The outer wall of the column (44) is slidably connected to the inside of the slot (42).

4. The in-mold cutting die for processing food storage box lids according to claim 1, characterized in that: The outer wall of the elastic retaining ring (45) is engaged with the top of the guide sleeve (41).

5. The in-mold cutting die for processing food storage box lids according to claim 1, characterized in that: The column (44) is provided in multiple sets, and the multiple sets of columns (44) are distributed in a ring along the central axis of the guide sleeve (41).

6. The in-mold cutting die for processing food storage box lids according to claim 1, characterized in that: The spring disassembly assembly (3) includes an elastic sheet (31), a threaded sleeve (32) is fixedly connected to the bottom outer wall of the elastic sheet (31), a ring (33) is fixedly connected to the top of the elastic sheet (31), and a guide roller (34) is fixedly connected to the outer wall of the ring (33).

7. The in-mold cutting die for processing food storage box lids according to claim 6, characterized in that: The outer wall of the elastic sheet (31) is threadedly connected to the top of the horizontal plate of the in-mold cutting die (2).

8. The in-mold cutting die for processing food storage box lids according to claim 6, characterized in that: The outer wall of the guide roller (34) is slidably connected to the inside of the mold (1) parts.

Images