Multi-cavity temperature control device for fine post-processing of plastic bottle blanks
By designing a multi-cavity temperature control device with rotation, lifting, and temperature adjustment mechanisms, the problem of uneven preheating of plastic preforms was solved, achieving uniform heating and cooling of the inner and outer surfaces of the preforms, thus improving the preheating effect and the plasticity of blow molding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU KERUI PLASTIC CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-21
AI Technical Summary
When using existing multi-cavity temperature control devices, the outer surface of the plastic preform is not preheated evenly, resulting in poor overall preheating effect and affecting subsequent blow molding processes.
A multi-cavity temperature control device was designed, which includes a rotation mechanism, a lifting mechanism, and a temperature regulation mechanism. The rotation mechanism causes the preform to rotate, the lifting mechanism is easy to operate, and the temperature regulation mechanism enables uniform heating and cooling of the inner and outer surfaces, ensuring consistent preheating effect.
It improves the temperature control uniformity and preheating effect of plastic preforms, enhances the plasticity of subsequent blow molding processes, facilitates operation, and improves production efficiency.
Smart Images
Figure CN224527983U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic preform processing technology, specifically to a multi-cavity temperature control device for the fine post-processing of plastic preforms. Background Technology
[0002] Plastic preforms are intermediate semi-finished products formed by injection molding under specific temperature and pressure conditions, where raw materials are filled into the cavity of a mold. They are a crucial intermediate step in the manufacturing of packaging containers such as plastic bottles, and after blow molding, they can become various end products.
[0003] After injection molding, plastic preforms usually need to undergo subsequent blow molding to form plastic bottles. Before blow molding, the plastic preforms usually need to be preheated. The core purpose of preheating is to provide suitable conditions for subsequent blow molding deformation, improve the plasticity of the plastic preforms, and facilitate blow molding stretching.
[0004] Considering that existing multi-cavity temperature control devices typically use preheating equipment to heat the preforms, and that existing equipment generally preheats the outer surface of the plastic preforms, when multiple preforms are arranged side by side, the surfaces between the gaps cannot be fully heated, resulting in uneven overall preheating of the plastic preforms and reduced effectiveness of the temperature control device. Utility Model Content
[0005] The purpose of this invention is to provide a multi-cavity temperature control device for the fine post-processing of plastic preforms.
[0006] To achieve this objective, the present invention adopts the following technical solution: A multi-chamber temperature control device for fine post-processing of plastic preforms includes a base, a temperature control box, a temperature adjustment mechanism, a box cover, a rotating mechanism, and a lifting mechanism. The temperature control box is fixedly installed on the base via a support frame, and the box cover is fixedly installed on the temperature control box. The temperature adjustment mechanism is used to control the temperature inside the temperature control box, the rotating mechanism is used to drive the preforms inside the temperature control box to rotate, and the lifting mechanism is used to drive the rotating mechanism to lift. The rotating mechanism includes a ring and a support plate, with the support plate rotatably mounted on the ring via a cylindrical rod. The ring and support plate enable the preform to rotate, ensuring that the outer surface of the preform maintains a uniform heating or cooling effect, thus improving the temperature control uniformity of the preform.
[0007] Furthermore, the rotating mechanism also includes a bidirectional threaded rod and a clamping plate. A groove is provided on the support plate, and the clamping plate is slidably installed in the groove. The bidirectional threaded rod is rotatably installed on the support plate, and the bidirectional threaded rod is threadedly connected to the clamping plate.
[0008] Furthermore, the rotating mechanism also includes a second motor, which is fixedly mounted on the support plate, and the output shaft of the second motor is fixedly connected to a bidirectional threaded rod.
[0009] Furthermore, the rotating mechanism also includes a motor, a gear, and a gear. The motor is fixedly installed at the bottom of the temperature control box, the gear is rotatably installed inside the temperature control box, and the gear is fixedly connected to the output shaft of the motor. The gear is fixedly installed on the cylindrical rod and meshes with the gear.
[0010] Furthermore, the lifting mechanism includes a U-shaped rod and a moving block. The U-shaped rod is fixedly installed at the bottom of the ring and passes through the temperature control box. A groove is provided on the base, and the moving block is slidably installed in the groove. The moving block and the U-shaped rod are hinged together by a hinge plate. The movement of the moving block can drive the ring to move vertically, thereby driving the support plate to move vertically, making it easier for staff to pick up and install the bottle preform.
[0011] Furthermore, the lifting mechanism also includes a third motor and a threaded rod. The threaded rod is rotatably mounted on the base and is threadedly connected to the moving block. The third motor is fixedly mounted on the base, and the output shaft of the third motor is fixedly connected to the threaded rod.
[0012] Furthermore, the temperature control mechanism includes a fan, a ventilation duct, and an exhaust pipe. The fan is fixedly installed on the cover, the ventilation duct is fixedly installed at the bottom of the cover and is connected to the fan, the ventilation duct has an air outlet, and the exhaust pipe is fixedly installed on the cover.
[0013] Furthermore, the temperature control mechanism also includes an electric heating wire, which is fixedly installed on the inner wall of the temperature control box. Through the fan and the electric heating wire, the preform can be circulated for heating and cooling, resulting in more uniform heating of the inner and outer surfaces of the preform and preventing the outer surface from being heated too high while the inner surface is not heated completely.
[0014] The beneficial effects of this utility model are as follows: This multi-cavity temperature control device for the fine post-processing of plastic preforms, through its rotating mechanism, can drive the preform to rotate, ensuring that the surface of the preform is always uniformly heated or cooled, thus improving the effectiveness of the temperature control device. In addition, through its lifting mechanism, it can drive the ring and support plate to move vertically, making it easier for workers to pick up preheated or preheated preforms, thereby further improving the effectiveness of the temperature control device. At the same time, through its temperature adjustment mechanism, it can perform cyclic heating and cooling of the preform, making the preheating effect of the inner and outer surfaces of the preform more uniform, further improving the preheating effect of the preform. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the temperature control box of this utility model; Figure 3 This is a schematic diagram of the main view of the annular structure of this utility model; Figure 4 This is a schematic diagram of the main structure of the rotating mechanism of this utility model; Figure 5 This is a cross-sectional view of the temperature control box of this utility model; Figure 6 This is a schematic diagram of the main structure of the lifting mechanism of this utility model; Figure 7 This is a schematic diagram of the main structure of the box cover of this utility model.
[0017] In the diagram: 1. Base; 2. Support frame; 3. Temperature control box; 4. Temperature adjustment mechanism; 41. Fan; 42. Ventilation pipe; 43. Air outlet; 44. Electric heating wire; 45. Exhaust pipe; 5. Box cover; 6. Rotating mechanism; 61. Motor 1; 62. Gear 1; 63. Ring; 64. Gear 2; 65. Cylindrical rod; 66. Support plate; 67. Slide groove; 68. Bidirectional threaded rod; 69. Motor 2; 610. Clamping plate; 7. Lifting mechanism; 71. U-shaped rod; 72. Hinge plate; 73. Moving block; 74. Motor 3; 75. Threaded rod; 76. Groove. Detailed Implementation
[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0019] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0020] Reference Figures 1 to 4The multi-cavity temperature control device for the fine post-processing of plastic preforms shown includes a base 1, a temperature control box 3, a temperature adjustment mechanism 4, a box cover 5, a rotating mechanism 6, and a lifting mechanism 7. The temperature control box 3 is fixedly installed on the base 1 by a support frame 2. The support frame 2 and the base 1 provide support and fixation for the temperature control box 3. The box cover 5 is fixedly installed on the temperature control box 3. By placing the preform inside the temperature control box 3, the preform can be preheated. The temperature adjustment mechanism 4 is used to control the temperature inside the temperature control box 3. The temperature adjustment mechanism 4 can circulate heating and cooling of the preform, improving the preheating effect. The rotating mechanism 6 is used to drive the preform inside the temperature control box 3 to rotate. The rotating mechanism 6 can drive the preform to rotate, thereby improving the preheating uniformity of the preform. The lifting mechanism 7 is used to drive the rotating mechanism 6 to lift, making it convenient for workers to pick up or install the preform. The rotating mechanism 6 includes a ring 63 and a support plate 66. The support plate 66 is rotatably mounted on the ring 63 via a cylindrical rod 65. The support plate 66 is used to support the preform. Through the rotation effect of the support plate 66, the preform can be driven to rotate.
[0021] Reference Figures 2 to 4 Specifically, the rotating mechanism 6 also includes a bidirectional threaded rod 68 and a clamping plate 610. A groove 67 is provided on the support plate 66. The groove 67 guides the clamping plate 610 and prevents it from shifting during movement. The clamping plate 610 is slidably installed in the groove 67. Two clamping plates 610 are symmetrically arranged. The movement of the two clamping plates 610 can clamp and fix the preform on the support plate 66, so that the support plate 66 can drive the preform to rotate. The bidirectional threaded rod 68 is rotatably installed on the support plate 66 and is threadedly connected to the clamping plate 610. The rotation of the bidirectional threaded rod 68 can drive the two clamping plates 610 to move simultaneously, thus moving them closer or further apart. The rotating mechanism 6 also includes a second motor 69, which is fixedly mounted on the support plate 66. The output shaft of the second motor 69 is fixedly connected to the bidirectional threaded rod 68. By starting the second motor 69, the bidirectional threaded rod 68 can be driven to rotate, thereby driving the two clamping plates 610 to move.
[0022] Reference Figure 4 and Figure 5More specifically, the rotating mechanism 6 also includes a motor 61, a gear 62, and a gear 64. The motor 61 is fixedly installed at the bottom of the temperature control box 3. By starting the motor 61, the gear 62 can be driven to rotate. The gear 62 is rotatably installed inside the temperature control box 3 and is fixedly connected to the output shaft of the motor 61. The rotation of the gear 62 can drive the gear 64 to rotate. The gear 64 is fixedly installed on the cylindrical rod 65 and meshes with the gear 62. The rotation of the gear 64 can drive the cylindrical rod 65 to rotate, thereby driving the support plate 66 to rotate.
[0023] Reference Figure 3 and Figure 6 Specifically, the lifting mechanism 7 includes a U-shaped rod 71 and a moving block 73. The U-shaped rod 71 is fixedly installed at the bottom of the ring 63 and passes through the temperature control box 3. The movement of the U-shaped rod 71 can drive the ring 63 to move, thereby driving the support plate 66 to move vertically. The base 1 has a groove 76, which guides the moving block 73 and prevents it from shifting during movement. The moving block 73 is slidably installed in the groove 76, and the moving block 73 is hinged to the U-shaped rod 71 through a hinge plate 72. The movement of the moving block 73 can drive the hinge plate 72 to move, thereby driving the U-shaped rod 71 to move vertically. The lifting mechanism 7 also includes a motor 74 and a threaded rod 75. The threaded rod 75 is rotatably mounted on the base 1 and is threadedly connected to the moving block 73. The rotation of the threaded rod 75 can drive the moving block 73 to move. The motor 74 is fixedly mounted on the base 1 and the output shaft of the motor 74 is fixedly connected to the threaded rod 75. By starting the motor 74, the threaded rod 75 can be driven to rotate.
[0024] Reference Figure 2 and Figure 7 Specifically, the temperature control mechanism 4 includes a fan 41, a ventilation pipe 42, and an exhaust pipe 45. The fan 41 is fixedly installed on the cover 5. By starting the fan 41, cooling air is generated. The ventilation pipe 42 is fixedly installed at the bottom of the cover 5 and is connected to the fan 41. An air outlet 43 is provided on the ventilation pipe 42. The cooling air generated by the fan 41 can be discharged into the temperature control box 3 from the ventilation pipe 42 and the air outlet 43, thereby cooling the preform. The exhaust pipe 45 is fixedly installed on the cover 5 and is used to discharge the gas inside the temperature control box 3. The temperature control mechanism 4 also includes an electric heating wire 44, which is fixedly installed on the inner wall of the temperature control box 3. The heating effect of the electric heating wire 44 can heat the preform inside the temperature control box 3.
[0025] Reference Figures 1 to 7This multi-cavity temperature control device for the refined post-processing of plastic preforms, through its rotating mechanism, enables the preforms to rotate, ensuring that the surface of the preforms is always uniformly heated or cooled, thus improving the effectiveness of the temperature control device. In addition, the lifting mechanism enables the ring and support plate to move vertically, facilitating the handling of preheated or preheated preforms by staff, further enhancing the effectiveness of the temperature control device. Simultaneously, the temperature adjustment mechanism enables the preforms to undergo cyclic heating and cooling, resulting in more uniform preheating of the inner and outer surfaces of the preforms, further improving the preheating effect.
[0026] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.
Claims
1. A multi-cavity temperature control device for the fine post-processing of plastic bottle preforms, characterized in that, The device includes a base (1), a temperature control box (3), a temperature adjustment mechanism (4), a box cover (5), a rotating mechanism (6), and a lifting mechanism (7). The temperature control box (3) is fixedly installed on the base (1) by a support frame (2). The box cover (5) is fixedly installed on the temperature control box (3). The temperature adjustment mechanism (4) is used to control the temperature inside the temperature control box (3). The rotating mechanism (6) is used to drive the preform inside the temperature control box (3) to rotate. The lifting mechanism (7) is used to drive the rotating mechanism (6) to lift. The rotating mechanism (6) includes a ring (63) and a support plate (66), the support plate (66) being rotatably mounted on the ring (63) via a cylindrical rod (65).
2. The multi-cavity temperature control device for the fine post-processing of plastic preforms according to claim 1, characterized in that, The rotating mechanism (6) further includes a bidirectional threaded rod (68) and a clamping plate (610). A groove (67) is provided on the support plate (66). The clamping plate (610) is slidably installed in the groove (67). The bidirectional threaded rod (68) is rotatably installed on the support plate (66) and is threadedly connected to the clamping plate (610).
3. The multi-cavity temperature control device for the fine post-processing of plastic preforms according to claim 2, characterized in that, The rotating mechanism (6) also includes a second motor (69), which is fixedly installed on the support plate (66), and the output shaft of the second motor (69) is fixedly connected to the bidirectional threaded rod (68).
4. The multi-cavity temperature control device for the fine post-processing of plastic preforms according to claim 2, characterized in that, The rotating mechanism (6) also includes a motor (61), a gear (62) and a gear (64). The motor (61) is fixedly installed at the bottom of the temperature control box (3). The gear (62) is rotatably installed on the inside of the temperature control box (3) and is fixedly connected to the output shaft of the motor (61). The gear (64) is fixedly installed on the cylindrical rod (65) and meshes with the gear (62).
5. The multi-cavity temperature control device for the fine post-processing of plastic preforms according to claim 1, characterized in that, The lifting mechanism (7) includes a U-shaped rod (71) and a moving block (73). The U-shaped rod (71) is fixedly installed at the bottom of the ring (63) and passes through the temperature control box (3). A groove (76) is provided on the base (1). The moving block (73) is slidably installed in the groove (76) and the moving block (73) is hinged to the U-shaped rod (71) by a hinge plate (72).
6. The multi-cavity temperature control device for the fine post-processing of plastic preforms according to claim 5, characterized in that, The lifting mechanism (7) also includes a motor (74) and a threaded rod (75). The threaded rod (75) is rotatably mounted on the base (1) and is threadedly connected to the moving block (73). The motor (74) is fixedly mounted on the base (1) and the output shaft of the motor (74) is fixedly connected to the threaded rod (75).
7. The multi-cavity temperature control device for the fine post-processing of plastic preforms according to claim 1, characterized in that, The temperature regulating mechanism (4) includes a fan (41), a ventilation pipe (42) and an exhaust pipe (45). The fan (41) is fixedly installed on the cover (5). The ventilation pipe (42) is fixedly installed at the bottom of the cover (5) and is connected to the fan (41). An air outlet (43) is provided on the ventilation pipe (42). The exhaust pipe (45) is fixedly installed on the cover (5).
8. The multi-cavity temperature control device for the fine post-processing of plastic preforms according to claim 7, characterized in that, The temperature regulation mechanism (4) also includes an electric heating wire (44), which is fixedly installed on the inner wall of the temperature control box (3).