Polyurethane rotational molding device
By designing a polyurethane rotomolding device that can quickly adjust and limit the fixed support plate, the problem of existing devices requiring replacement of devices when using molds of different sizes is solved, improving the flexibility and practicality of the device and reducing the cost of use.
Patent Information
- Application Number
- CN202421668177.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In existing polyurethane rotomolding devices, the support plates are usually fixedly arranged, resulting in the need to replace new devices when using different sizes of rotomolding molds, increasing production costs.
A polyurethane rotomolding device is designed, which can achieve rapid adjustment and limit fixation of the support plate through the combination of components such as base, bracket, frame, rotating rod, support disc, bidirectional screw and limit fixation, and adapt to the use of molds of different sizes.
The device improves the flexibility and practicality of the device and reduces the cost of use by quickly adjusting and limiting the fixed support plate.
Smart Images
Figure CN222807457U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of polyurethane rotational molding devices, and more specifically, particularly relates to a polyurethane rotational molding device. Background Art
[0002] Rotomolding, also known as rotational molding, rotational molding, rotational molding, etc., is a thermoplastic plastic hollow molding method. This 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, formed into the required shape, and then cooled and shaped into a finished product.
[0003] The support plates used for supporting in some current polyurethane rotational molding devices are usually fixed. When using rotational molding molds of different sizes for processing, new rotational molding devices need to be replaced, which increases production costs.
[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a polyurethane rotational molding device is provided to achieve a more practical purpose. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a polyurethane rotational molding device, which is achieved by the following specific technical means:
[0006] A polyurethane rotational molding device comprises a base, a pair of brackets are symmetrically installed on both sides of the top of the base, a frame is rotatably installed between the pair of brackets, a pair of rotating rods are rotatably installed inside the frame, and both ends of the rotating rods pass through the two sides of the frame and extend to the outside of the frame, a pair of supporting plates are slidably installed at both ends of the circumference of the rotating rod, a first mounting groove is penetrated inside the rotating rod, a bidirectional screw is rotatably installed in the first mounting groove, a pair of connecting blocks are threadedly connected at both ends of the bidirectional screw, and the connecting block passes through the upper and lower ends of the rotating rod and is slidably connected to the rotating rod, a pair of connecting blocks are respectively connected to a pair of supporting plates, one end of the bidirectional screw is provided with a square limiting groove, the rotating rod is provided with a circular limiting groove at a position close to the square limiting groove, limiting blocks are inserted in the circular limiting groove and the square limiting groove, and a heating mechanism is installed at the bottom end of the frame.
[0007] Furthermore, four bolts are equidistantly installed on the circumferential side of the rotating rod near the circular limiting groove, and the bolts extend into the circular limiting groove and are tightly attached to the limiting block. Anti-slip pads are provided at the positions where the bolts contact the limiting block.
[0008] Furthermore, one of the pair of rotating rods is provided with a driven synchronous wheel at one end away from the circular limiting groove.
[0009] Furthermore, the frame is provided with a first motor on a side close to the driven synchronous wheel, an active synchronous wheel is provided on an output end of the first motor via a coupling, and the active synchronous wheel and the driven synchronous wheel are connected via a synchronous belt.
[0010] Furthermore, a pair of bidirectional screw rods are both provided with a crank handle at one end away from the circular limiting groove.
[0011] Furthermore, a chassis is installed on one side of one of the pair of brackets, a second mounting groove is provided inside the chassis, a worm gear is rotatably installed in the second mounting groove, and the worm gear is connected to the frame, a worm is installed at the bottom end of the second mounting groove, and the worm is meshingly connected to the worm wheel.
[0012] Furthermore, a second motor is installed on one side of the bottom end of the second installation groove, and an output end of the second motor is connected to the worm gear through a coupling.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The polyurethane rotational molding device in the utility model is convenient for quickly adjusting the positions of the two pairs of support plates according to the size of the mold before rotational molding through the coordinated use of a base, a bracket, a frame, a rotating rod, a support plate, a first installation groove, a bidirectional screw, a connecting block, a square limit groove, a circular limit groove, a limit block, a heating mechanism, a bolt, a driven synchronous wheel, a first motor, an active synchronous wheel and a crank handle, and the bidirectional screw is limited and fixed after the adjustment is completed, thereby improving the flexibility and practicality of the polyurethane rotational molding device and reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model.
[0016] Figure 2 It is a side cross-sectional schematic diagram of the internal structure of the rotating rod of the utility model.
[0017] Figure 3 It is a front cross-sectional schematic diagram of the utility model.
[0018] Figure 4 It is a side cross-sectional schematic diagram of the utility model at a position where a circular limiting groove is provided on the rotating rod.
[0019] Figure 5 The utility model Figure 2 Enlarged schematic diagram of part A.
[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:
[0021] 1. Base; 2. Bracket; 3. Frame; 4. Rotating rod; 5. Support plate; 6. First mounting slot; 7. Bidirectional screw; 8. Connecting block; 9. Square limit slot; 10. Circular limit slot; 11. Limit block; 12. Heating mechanism; 13. Bolt; 14. Driven synchronous wheel; 15. First motor; 16. Active synchronous wheel; 17. Crank handle; 18. Chassis; 19. Second mounting slot; 20. Worm wheel; 21. Worm; 22. Second motor. DETAILED DESCRIPTION
[0022] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.
[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] Example:
[0026] As attached Figure 1 To Attachment Figure 5 As shown:
[0027] The utility model provides a polyurethane rotational molding device, comprising a base 1, a pair of brackets 2 are symmetrically installed on both sides of the top of the base 1, a frame 3 is rotatably installed between the pair of brackets 2, a pair of rotating rods 4 are rotatably installed inside the frame 3, and both ends of the rotating rods 4 pass through both sides of the frame 3 and extend to the outside of the frame 3, a pair of supporting plates 5 are slidably installed at both ends of the circumference of the rotating rod 4, a first installation groove 6 is penetrated inside the rotating rod 4, a bidirectional screw 7 is rotatably installed in the first installation groove 6, a pair of connecting blocks 8 are threadedly connected at both ends of the bidirectional screw 7, and the connecting block 8 passes through the upper and lower ends of the rotating rod 4 and is slidably connected to the rotating rod 4, a pair of connecting blocks 8 are respectively connected to the pair of supporting plates 5, a square limiting groove 9 is provided at one end of the bidirectional screw 7, a circular limiting groove 10 is provided at a position close to the square limiting groove 9, a limiting block 11 is inserted in the circular limiting groove 10 and the square limiting groove 9, and a heating mechanism 12 is installed at the bottom end of the frame 3.
[0028] Among them, four bolts 13 are equidistantly installed on the circumferential side of the rotating rod 4 at positions close to the circular limit groove 10, and the bolts 13 extend into the circular limit groove 10 and are tightly attached to the limit block 11. The bolts 13 are provided with anti-slip pads at the positions in contact with the limit blocks 11. The size of the limit blocks 11 matches the size of the square limit grooves 9 and the circular limit grooves 10. After the staff has adjusted the positions of a pair of support plates 5, they can align the position of the limit blocks 11 with the position of the square limit grooves 9, and then insert the limit blocks 11 into the square limit grooves 9, and rotate the four bolts 13 respectively, so that the four bolts 13 are tightly attached to the circumferential side of the limit blocks 11, fix the limit blocks 11, and thereby reduce the self-rotation of the bidirectional screw 7 inside the rotating rod 4 when the rotating rod 4 rotates.
[0029] Among them, a driven synchronous wheel 14 is installed at one end of the pair of rotating rods 4 away from the circular limiting groove 10 .
[0030] Among them, the frame 3 is equipped with a first motor 15 on one side close to the driven synchronous wheel 14, and the output end of the first motor 15 is equipped with a driving synchronous wheel 16 through a coupling, and the driving synchronous wheel 16 and the driven synchronous wheel 14 are connected by a synchronous belt. The first motor 15 drives the driving synchronous wheel 16 to rotate. Since the driving synchronous wheel 16 and the driven synchronous wheel 14 are connected by a synchronous belt, the driven synchronous wheel 14 rotates together, thereby driving the rotating rod 4 to rotate.
[0031] Among them, a pair of bidirectional screws 7 are both equipped with a crank handle 17 at one end away from the circular limiting groove 10, which is convenient for rotating the bidirectional screws 7. Through the rotation of the bidirectional screws 7, under the limiting action of the rotating rod 4, a pair of support plates 5 move towards or away from each other at the same time.
[0032] Among them, a chassis 18 is installed on one side of one of the pair of brackets 2, and a second mounting groove 19 is provided inside the chassis 18. A worm gear 20 is rotatably installed in the second mounting groove 19, and the worm gear 20 is connected to the frame 3. A worm 21 is installed at the bottom end of the second mounting groove 19, and the worm 21 is meshingly connected with the worm gear 20.
[0033] Among them, a second motor 22 is installed on one side of the bottom end of the second mounting groove 19, and the output end of the second motor 22 is connected to the worm 21 through a coupling. The second motor 22 drives the worm 21 to rotate. Since the worm wheel 20 is meshingly connected with the worm 21, the worm wheel 20 rotates together, thereby driving the frame 3 to rotate.
[0034] Working principle of this embodiment: When using the polyurethane rotational molding device, the staff first rotates a pair of crank handles 17 according to the size of the rotational molding mold. The crank handles 17 drive the bidirectional screw 7 to rotate. Under the limiting action of the rotating rod 4, the connecting block 8 drives a pair of support plates 5 to move toward or away from each other at the same time, so that the support plates 5 are moved to a suitable position and can support the mold. At this time, the staff can align the position of the limit block 11 with the position of the square limit groove 9, and then insert the limit block 11 into the square limit groove 9, and rotate the four bolts 13 respectively, so that the four bolts 13 are close to the circumference of the limit block 11 to fix the limit block 11, thereby reducing the self-rotation of the bidirectional screw 7 inside the rotating rod 4 when the rotating rod 4 rotates. After the fixing is completed, the mold can be placed on the two pairs of support plates 5, and the first motor 15, the second motor 22 and the heating mechanism 12 are turned on. The rotational molding operation is performed by rotating the rotating rod 4, rotating the frame 3 and heating the heating mechanism 12.
[0035] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.
Claims
1. A polyurethane rotational molding device, comprising a base (1), characterized in that: A pair of brackets (2) are symmetrically mounted on both sides of the top of the base (1); a frame (3) is rotatably mounted between the pair of brackets (2); a pair of rotating rods (4) are rotatably mounted inside the frame (3); both ends of the rotating rods (4) penetrate both sides of the frame (3) and extend to the outside of the frame (3); a pair of supporting plates (5) are slidably mounted on both ends of the circumference of the rotating rods (4); a first mounting groove (6) is penetrated inside the rotating rod (4); a bidirectional screw (7) is rotatably mounted in the first mounting groove (6); the bidirectional screw (7) ) are threadedly connected to a pair of connecting blocks (8) at both ends, and the connecting blocks (8) penetrate the upper and lower ends of the rotating rod (4) and are slidably connected to the rotating rod (4), the pair of connecting blocks (8) are respectively connected to a pair of supporting plates (5), one end of the bidirectional screw (7) is provided with a square limiting groove (9), the rotating rod (4) is provided with a circular limiting groove (10) at a position close to the square limiting groove (9), and limiting blocks (11) are inserted into the circular limiting groove (10) and the square limiting groove (9), and a heating mechanism (12) is installed at the bottom end of the frame (3).
2. The polyurethane rotational molding device according to claim 1, characterized in that: Four bolts (13) are equidistantly mounted on the circumferential side of the rotating rod (4) at positions close to the circular limiting groove (10), and the bolts (13) extend into the circular limiting groove (10) and are tightly attached to the limiting block (11), and an anti-slip pad is provided at the position where the bolts (13) contact the limiting block (11).
3. The polyurethane rotational molding device according to claim 1, characterized in that: One of the pair of rotating rods (4) is provided with a driven synchronous wheel (14) at one end away from the circular limiting groove (10).
4. The polyurethane rotational molding device as claimed in claim 3, characterized in that: The frame (3) is provided with a first motor (15) on a side close to the driven synchronous wheel (14); an active synchronous wheel (16) is provided at an output end of the first motor (15) via a coupling, and the active synchronous wheel (16) and the driven synchronous wheel (14) are connected via a synchronous belt.
5. The polyurethane rotational molding device according to claim 1, characterized in that: A pair of bidirectional screw rods (7) are both provided with a crank handle (17) at one end away from the circular limiting groove (10).
6. The polyurethane rotational molding device according to claim 1, characterized in that: A case (18) is installed on one side of one of the pair of brackets (2), a second installation groove (19) is provided inside the case (18), a worm gear (20) is rotatably installed in the second installation groove (19), and the worm gear (20) is connected to the frame (3), a worm (21) is installed at the bottom end of the second installation groove (19), and the worm gear (21) is meshingly connected with the worm gear (20).
7. The polyurethane rotational molding device according to claim 6, characterized in that: A second motor (22) is installed on one side of the bottom end of the second installation groove (19), and the output end of the second motor (22) is drivingly connected to the worm (21) via a coupling.