Polyurethane rotational molding device

Abstract

The utility model relates to the field of rotational molding devices, and particularly discloses a polyurethane rotational molding device which comprises a rotational molding mechanism, a rotational molding cylinder is arranged in the rotational molding mechanism, a sealing cover plate is mounted at one end of the rotational molding cylinder, a sealing mechanism is arranged on the outer side of the sealing cover plate and the rotational molding cylinder, and the sealing mechanism comprises a first positioning seat, a second positioning seat and a reinforcing clamping plate. A limiting clamping pin is installed on the lower surface of the second positioning seat, a clamping groove is formed in the lower surface of the first positioning seat, a side sealing plate is installed at one side end of the reinforcing clamping plate, fastening pressing pieces are installed on the inner side wall of the reinforcing clamping plate in an array mode, an inserting ring is installed on the upper surface of the reinforcing clamping plate, and a plug pin is installed on the upper surface of the second positioning seat. The whole reinforcing clamping plate is pushed towards the outer sides of the second positioning seat and the first positioning seat, so that a fastening pressing sheet on the inner side wall of the reinforcing clamping plate can deform after the first positioning seat is in contact with the second positioning seat to ensure tight pressing, and the sealing effect on the sealing cover plate and the rotational molding cylinder is ensured.

Description

Technical Field

[0001] The utility model relates to the field of rotational molding devices, in particular to a polyurethane rotational molding device. Background Art

[0002] Roto-molding, also known as rotational molding, rotational molding, rotational molding, etc., is a thermoplastic hollow molding method. The method is to first add the plastic raw material into the mold, and then the mold is continuously rotated along two vertical axes and heated. Under the action of gravity and heat energy, the plastic raw material in the mold is gradually and evenly coated, melted and adhered to the entire surface of the mold cavity, forming into the required shape, and then cooled and shaped into a product.

[0003] However, the covers of rotational molding molds currently on the market are mostly closed with bolts, which can easily cause rust on the threaded connections after heating and cooling with cold water, affecting subsequent installation and disassembly. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a polyurethane rotational molding device to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: a polyurethane roto-molding device, comprising a roto-molding mechanism, a roto-molding cylinder is arranged inside the roto-molding mechanism, a sealing cover plate is installed at one end of the roto-molding cylinder, a sealing mechanism is arranged on the outer side of the sealing cover plate and the roto-molding cylinder, the sealing mechanism comprises: a first positioning seat, a second positioning seat, and a reinforcement card plate, a limiting card pin is installed on the lower surface of the second positioning seat, a card slot is opened on the lower surface of the first positioning seat, a side sealing plate is installed on one side end of the reinforcement card plate, a fastening pressing sheet is installed on the inner side wall array of the reinforcement card plate, an insert ring is installed on the upper surface of the reinforcement card plate, and a pin is installed on the upper surface of the second positioning seat.

[0006] As a further solution of the utility model: rotating rings are installed at both ends of the rotational molding mechanism, a supporting base is arranged below the rotational molding mechanism, and an auxiliary rotating wheel is installed inside the supporting base at a position corresponding to the rotating ring.

[0007] As a further solution of the utility model: a heating chamber is installed on the inner side wall of the support base.

[0008] As a further solution of the present invention: the second positioning seat is engaged with the engaging groove via the limiting engaging pin, and the engaging pin is engaged with the inserting ring.

[0009] As a further solution of the present invention: the second positioning seat is fixedly connected to the sealing cover plate, and the first positioning seat is fixedly connected to the rotational molding cylinder.

[0010] As a further solution of the utility model: a movable groove is provided on the inner side wall of the rotating ring corresponding to the position of the auxiliary rotating wheel.

[0011] As a further solution of the utility model: the outer diameter length of the sealing cover plate is the same as the outer diameter length of the roto-molding cylinder.

[0012] As a further solution of the utility model: flame-spraying tubes are installed in an array on the upper surface of the heating chamber.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the reinforcing card is pushed as a whole toward the outside of the second positioning seat and the first positioning seat, the fastening pressing piece on the inner wall of the reinforcing card will deform after the first positioning seat and the second positioning seat come into contact to ensure a tight press fit, thereby ensuring the sealing effect on the sealing cover plate and the rotational molding cylinder.

[0015] After the first positioning seat and the second positioning seat are installed, they are limited by the reinforcing card plate, which makes it convenient to disassemble them. Then, after heating and cooling, they will not rust and cannot be disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a polyurethane rotational molding device;

[0017] Figure 2 It is a structural schematic diagram of a sealing mechanism in a polyurethane rotational molding device;

[0018] Figure 3 It is a partially enlarged schematic diagram of the position of a sealing cover plate in a polyurethane rotational molding device;

[0019] Figure 4 It is a structural schematic diagram of a reinforcement card plate in a polyurethane rotational molding device;

[0020] Figure 5 The present invention is a side view of a rotational molding mechanism in a polyurethane rotational molding device.

[0021] In the figure: 1. rotomolding mechanism; 2. rotomolding cylinder; 3. rotating ring; 4. sealing cover plate; 5. reinforcing card plate; 6. supporting base; 7. auxiliary rotating wheel; 8. heating chamber; 201. first positioning seat; 202. card slot; 401. second positioning seat; 402. limit card pin; 403. latch pin; 501. plug ring; 502. fastening pressure piece; 503. side sealing plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-5 As shown, this embodiment provides a polyurethane rotomolding device, including a rotomolding mechanism 1, a rotomolding cylinder 2 is arranged inside the rotomolding mechanism 1, a rotating ring 3 is installed at one end of the rotomolding cylinder 2, a sealing mechanism is arranged on the outer side of the rotating ring 3 and the rotomolding cylinder 2, the outer diameter length of the sealing cover plate 4 is the same as the outer diameter length of the rotomolding cylinder 2, and the sealing mechanism includes: a first positioning seat 201, a second positioning seat 401, and a reinforcing card plate 5, the first positioning seat 201 is fixedly connected to the rotomolding cylinder 2, and the second positioning seat 401 is fixedly connected to the sealing cover The plate 4 is fixedly connected, a limiting pin 402 is installed on the lower surface of the second positioning seat 401, a slot 202 is opened on the lower surface of the first positioning seat 201, and the second positioning seat 401 is clamped with the slot 202 through the limiting pin 402. A side sealing plate 503 is installed on one side end of the reinforcement card plate 5, and a fastening pressing plate 502 is installed on the inner wall array of the reinforcement card plate 5. An insert ring 501 is installed on the upper surface of the reinforcement card plate 5, and a latch 403 is installed on the upper surface of the second positioning seat 401, and the latch 403 is clamped with the latch ring 501.

[0024] like Figure 2-5 As shown, in this embodiment, rotating rings 3 are installed at both ends of the rotational molding mechanism 1, a supporting base 6 is arranged below the rotational molding mechanism 1, an auxiliary rotating wheel 7 is installed inside the supporting base 6 at a position corresponding to the rotating ring 3, a movable groove is opened on the inner side wall of the rotating ring 3 corresponding to the position of the auxiliary rotating wheel 7, a heating chamber 8 is installed on the inner side wall of the supporting base 6, and a flamethrower tube is installed in an array on the upper surface of the heating chamber 8.

[0025] The working principle of the utility model is as follows: when in use, after the release agent is filled into the interior of the roto-molding cylinder 2 as a whole, the roto-molding raw material is injected, the sealing cover plate 4 is positioned as a whole in the side end position of the roto-molding cylinder 2, the second positioning seat 401 on the outside of the sealing cover plate 4 is staggered as a whole with the position of the first positioning seat 201 on the outside of the roto-molding cylinder 2, the sealing cover plate 4 is rotated as a whole, the limiting latch 402 at the end of the second positioning seat 401 is inserted into the interior of the slot 202 as a whole, and then the reinforcing card plate 5 is positioned as a whole in the outside of the installed second positioning seat 401 and the first positioning seat 201, and the side of the reinforcing card plate 5 away from the side sealing plate 503 is positioned in the limiting After positioning one side of the positioning pin 402, the reinforcement card plate 5 is pushed as a whole toward the outside of the second positioning seat 401 and the first positioning seat 201. The fastening pressing piece 502 on the inner wall of the reinforcement card plate 5 will be deformed after the first positioning seat 201 and the second positioning seat 401 come into contact to ensure a tight press fit. Then, the pin 403 is pushed toward the position of the insert ring 501 to ensure the limitation of the reinforcement card plate 5. Therefore, the sealing cover plate 4 and the roto-molding cylinder 2 can be closed. After the auxiliary driving wheel 7 is driven as a whole to rotate to control the rotating ring 3 on the outside of the roto-molding mechanism 1 to rotate as a whole, the heating tube on the heating bin 8 is used to heat and mold the rolling roto-molding cylinder 2.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyurethane roto-molding device, comprising a roto-molding mechanism (1), characterized in that: A roto-molding cylinder (2) is arranged inside the roto-molding mechanism (1), a sealing cover plate (4) is installed at one end of the roto-molding cylinder (2), a sealing mechanism is arranged on the outer side of the sealing cover plate (4) and the roto-molding cylinder (2), and the sealing mechanism comprises: a first positioning seat (201), a second positioning seat (401), and a reinforcing card plate (5), a limit pin (402) is installed on the lower surface of the second positioning seat (401), a card slot (202) is provided on the lower surface of the first positioning seat (201), a side sealing plate (503) is installed on one side end of the reinforcing card plate (5), a fastening pressing plate (502) is installed in an array on the inner side wall of the reinforcing card plate (5), an insert ring (501) is installed on the upper surface of the reinforcing card plate (5), and a plug pin (403) is installed on the upper surface of the second positioning seat (401).

2. A polyurethane rotational molding device according to claim 1, characterized in that: Rotating rings (3) are installed at both ends of the rotational molding mechanism (1), a supporting base (6) is arranged below the rotational molding mechanism (1), and an auxiliary rotating wheel (7) is installed inside the supporting base (6) at a position corresponding to the rotating ring (3).

3. A polyurethane rotational molding device according to claim 2, characterized in that: A heating chamber (8) is installed on the inner side wall of the support base (6).

4. A polyurethane rotational molding device according to claim 1, characterized in that: The second positioning seat (401) is engaged with the engagement groove (202) via the limiting engagement pin (402), and the latch pin (403) is engaged with the insertion ring (501).

5. A polyurethane rotational molding device according to claim 1, characterized in that: The second positioning seat (401) is fixedly connected to the sealing cover plate (4), and the first positioning seat (201) is fixedly connected to the roto-molding cylinder (2).

6. A polyurethane rotational molding device according to claim 2, characterized in that: An active groove is provided on the inner side wall of the rotating ring (3) at a position corresponding to the auxiliary rotating wheel (7).

7. A polyurethane rotational molding device according to claim 1, characterized in that: The outer diameter dimension length of the sealing cover plate (4) is the same as the outer diameter dimension length of the roto-molding cylinder (2).

8. A polyurethane rotational molding device according to claim 3, characterized in that: The upper surface of the heating chamber (8) is provided with an array of flame-spraying tubes.

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