A directional heating device for an isopipe

Abstract

The utility model discloses a kind of directional heating devices of special-shaped bottle embryo, directional heating device is installed on bottle embryo conveying line and is located the upstream of bottle blowing mechanism, including the support of spanning bottle embryo conveying line both sides, heating passage is provided on support and is convenient for bottle embryo to pass, the both sides of conveying line are provided with directional heating box on support, the structure of each directional heating box is same, the side plate of directional heating box close to heating passage is set as hole plate, several U-shaped directional radiation groove frames are fixed on hole plate, directional radiation groove frame extends up and down, heating lamp tube is fixedly installed in directional radiation groove frame, fan that blows towards heating passage is also installed on directional heating box, the top of directional heating box of conveying line both sides is also fixed with suction hood, the suction hood is located the top of heating passage, this directional heating device can better directional heating to the both sides of bottle embryo, to provide the condition for bottle blowing.

Description

Technical Field

[0001] This utility model relates to the field of blow molding technology, and in particular to a directional heating device for irregularly shaped bottle preforms. Background Technology

[0002] Plastic bottles are one of the most commonly used containers. In the process of making plastic bottles, the preform is first formed by injection molding using an injection molding machine, and then the preform is transferred to the blow molding line for blow stretch molding.

[0003] However, not all plastic bottles are circular in cross-section. Compared to traditional round bottles, there are various other shapes of plastic bottles used as containers. Circular cross-section bottles are relatively simple and convenient to heat-blow mold; the bottle body is simply heated evenly and then blow-blown into shape.

[0004] Heating and stretching irregularly shaped bottles with non-circular cross-sections is quite complicated. The current conventional method involves uniformly heating the preform during transport, and then continuously directional heating the opposite sides of the preform before placing it in a specific mold for blow forming. This results in higher local temperatures on the sides, allowing for the blow forming of a higher-quality irregularly shaped bottle. Current directional heating methods use heating lamps on both sides of the conveyor line to radiate heat to the preform, raising its temperature on both sides. However, this method is not ideal. First, although the heating lamps are located on both sides of the preform, they heat the entire surface, resulting in dispersed heat radiation and hindering effective directional heating. Second, the heating lamps preferentially radiate heat to the surface of the preform, while the bottle body has a certain thickness, leading to uneven temperatures between the inside and outside, thus affecting the blow forming process. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a directional heating device for irregularly shaped bottle preforms, which can better directionally heat both sides of the bottle preform, thereby providing conditions for bottle blowing.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a directional heating device for irregularly shaped bottle preforms, wherein the directional heating device is installed on the bottle preform conveyor line and located upstream of the blow molding mechanism, including a support spanning both sides of the bottle preform conveyor line, the support being provided with a heating channel to facilitate the passage of the bottle preforms, and directional heating boxes being provided on both sides of the support on the conveyor line, each directional heating box having the same structure, the side plate of the directional heating box near the heating channel being a perforated plate, and several U-shaped directional radiation groove frames being fixed on the perforated plate, the directional radiation groove frames extending vertically, heating lamps being fixedly installed inside the directional radiation groove frames, and a fan being installed on the directional heating box to blow air towards the heating channel, and a suction hood being fixed on the top of the directional heating boxes on both sides of the conveyor line, the suction hood being located above the heating channel.

[0007] As a preferred embodiment, the interior of the directional heating box is fixed with an upper crossbeam and a lower crossbeam, and the directional radiation trough frame is fixed on the upper crossbeam and the lower crossbeam.

[0008] As a preferred embodiment, the heating lamp tube includes a lamp tube body, with an upper lamp holder and a lower lamp holder fixedly installed at both ends of the lamp tube body, the upper lamp holder and the lower lamp holder being fixed on the upper crossbeam and the lower crossbeam respectively, and the lamp tube body being located within the directional radiation groove frame.

[0009] As a preferred embodiment, the upper and lower crossbeams are made of profiles, and straight grooves are provided on all four side walls of the profiles. The upper and lower lamp holders are provided with lamp holder adjustment strip holes perpendicular to the length of the profiles. The upper and lower lamp holders are fixed to the straight grooves by bolt and nut structures constrained in the lamp holder adjustment strip holes.

[0010] As a preferred embodiment, the directional radiation groove frame includes a bottom wall and two side walls. The bottom wall has vertically extending vertical slots. The directional radiation groove frame is fixed on the linear slide by a bolt and nut mechanism constrained within the vertical slots. Correspondingly, the perforated plate is also provided with clearance holes to facilitate the adjustment of the position of the directional radiation groove frame.

[0011] As a preferred embodiment, the bottom wall of the tank is also provided with airflow passage holes to facilitate airflow.

[0012] As a preferred embodiment, the bracket is a height-adjustable lifting bracket.

[0013] After adopting the above technical solution, the effect of this utility model is as follows: Since the directional heating device is installed on the preform conveyor line and located upstream of the blow molding mechanism, it includes a support spanning both sides of the preform conveyor line. The support is provided with a heating channel to facilitate the passage of the preform. Directional heating boxes are installed on both sides of the support on the conveyor line. Each directional heating box has the same structure. The side plate of the directional heating box near the heating channel is a perforated plate. Several U-shaped directional radiation groove frames are fixed on the perforated plate. The directional radiation groove frames extend vertically. Heating lamps are fixedly installed inside the directional radiation groove frames. A fan that blows air towards the heating channel is also installed on the directional heating box. The top of the directional heating chambers on both sides is also fixed with a suction hood, which is located above the heating channel. Therefore, during use, the heating lamps heat the preforms from the sides. At the same time, the heating lamps are located inside the U-shaped directional radiation groove frame. The side walls of the directional radiation groove frame will block the heat from the heating lamps, so that the heating lamps radiate heat to the preforms from the opening of the directional radiation groove frame, thus achieving directional heating. At the same time, a fan is also installed on the directional heating chamber. The fan blows air into the heating channel, thus cooling the surface of the preforms and reducing the surface temperature of the preforms. This makes the temperature inside and outside the preforms as uniform as possible, thereby ensuring the quality of subsequent bottle blowing.

[0014] Furthermore, since the directional heating box has an upper and lower crossbeam fixed inside, the directional radiation groove frame is fixed on the upper and lower crossbeams, the heating lamp tube includes a lamp tube body, and an upper lamp holder and a lower lamp holder are fixedly installed at both ends of the lamp tube body, respectively. The upper and lower lamp holders are fixed on the upper and lower crossbeams, respectively, and the lamp tube body is located inside the directional radiation groove frame. Therefore, by setting the upper and lower crossbeams, the directional radiation groove frame, the upper lamp holder, and the lower lamp holder can be easily fixed.

[0015] Furthermore, since the upper and lower crossbeams are made of profiles, and straight grooves are provided on all four side walls of the profiles, and lamp holders and lower lamp holders are provided with lamp holder adjustment slots perpendicular to the length of the profiles, the upper and lower lamp holders are fixed on the straight grooves by bolt and nut structures constrained in the lamp holder adjustment slots. Therefore, the upper and lower lamp holders can slide along the length of the straight grooves to adjust their positions, and can also be finely adjusted within the range of the lamp holder adjustment slots, thereby adjusting the distance between the lamp tube body and the preform.

[0016] Furthermore, since the directional radiation groove frame includes a bottom wall and two side walls, and the bottom wall is provided with vertically extending vertical slots, the directional radiation groove frame is fixed on the straight slide groove by a bolt and nut mechanism constrained within the vertical slots. Correspondingly, the perforated plate is also provided with clearance holes to facilitate the adjustment of the position of the directional radiation groove frame. Therefore, the vertical height of the directional radiation groove can be finely adjusted through the vertical slots.

[0017] Furthermore, the bottom wall of the tank is also provided with airflow holes to facilitate airflow. These airflow holes can also directly blow the heat from the heating lamp tube onto the preform. The bracket is a height-adjustable lifting bracket, which can adjust the height of the entire heating lamp tube for better connection with the preform conveyor line. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the directional heating box according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the directional heating box of this utility model, omitting the perforated plate.

[0022] Figure 4 yes Figure 3 The main view;

[0023] In the attached diagram: 1. Frame; 2. Heating channel; 3. Directional heating box; 4. Perforated plate; 5. Directional radiation trough frame; 51. Bottom wall of the trough; 52. Side wall of the trough; 53. Vertical strip hole; 54. Airflow hole; 6. Heating lamp; 61. Lamp body; 62. Upper lamp holder; 63. Lower lamp holder; 7. Fan; 8. Suction cover; 9. Upper crossbeam; 10. Lower crossbeam; 11. Straight slide; 12. Lamp holder adjustment hole. Detailed Implementation

[0024] The present invention will be further described in detail below through specific embodiments.

[0025] like Figure 1-4As shown, a directional heating device for irregularly shaped bottle preforms is installed on the preform conveyor line and located upstream of the blow molding mechanism. It includes a support 1 spanning both sides of the preform conveyor line, with a heating channel 2 on the support 1 to facilitate the passage of the preforms. Directional heating boxes 3 are installed on both sides of the conveyor line on the support 1, each with the same structure. The side plate of the directional heating box 3 near the heating channel 2 is a perforated plate 4, with several U-shaped directional radiation groove frames 5 fixed on the perforated plate 4. The directional radiation groove frames 5 extend vertically, and heating lamps 6 are fixedly installed inside the directional radiation groove frames 5. A fan 7 is also installed on the directional heating box 3 to blow air towards the heating channel 2. A suction hood 8 is fixed to the top of the directional heating boxes 3 on both sides of the conveyor line, located above the heating channel 2.

[0026] In this embodiment, the support 1 is a height-adjustable lifting support 1. An upper crossbeam 9 and a lower crossbeam 10 are fixed inside the directional heating box 3, and the directional radiation groove frame 5 is fixed on the upper crossbeam 9 and the lower crossbeam 10. The heating lamp 6 includes a lamp body 61, with an upper lamp holder 62 and a lower lamp holder 63 fixedly installed at both ends of the lamp body 61. The upper lamp holder 62 and the lower lamp holder 63 are respectively fixed on the upper crossbeam 9 and the lower crossbeam 10, and the lamp body 61 is located within the directional radiation groove frame 5. The upper crossbeam 9 and the lower crossbeam 10 are made of profiles, and straight grooves 11 are provided on all four side walls of the profiles. Adjustment slots 12 perpendicular to the length of the profiles are provided on the upper lamp holder 62 and the lower lamp holder 63. The upper lamp holder 62 and the lower lamp holder 63 are fixed on the straight grooves 11 by bolts and nuts constrained within the adjustment slots 12. The number of directional heating boxes 3 can be set according to actual needs.

[0027] The directional radiation trough frame 5 includes a bottom wall 51 and two side walls 52. The bottom wall 51 has vertically extending vertical slots 53. The directional radiation trough frame 5 is fixed to the linear slide 11 by bolt and nut mechanisms constrained within the vertical slots 53. Correspondingly, the perforated plate 4 also has clearance holes to facilitate position adjustment of the directional radiation trough frame 5. The bottom wall 51 also has airflow holes 54 to facilitate airflow.

[0028] The directional radiation groove frame 5, upper lamp holder 62, and lower lamp holder 63 are fixed by the upper crossbeam 9 and lower crossbeam 10. The upper lamp holder 62 and lower lamp holder 63 are fixed to the linear slide 11 by bolt and nut structure constrained in the lamp holder adjustment strip hole 12. The upper lamp holder 62 and lower lamp holder 63 can slide along the length of the linear slide 11 to adjust their position. In use, the heating lamp tube 6 heats both sides of the preform from the side. The heating lamp tube 6 is located in the U-shaped directional radiation groove frame 5. The side walls of the directional radiation groove frame 5 will shield the heat of the heating lamp tube 6, so that the heating lamp tube 6 radiates heat to the preform from the opening of the directional radiation groove frame 5, realizing directional heating. At the same time, a fan 7 is also provided on the directional heating box 3. The fan 7 blows air to the heating channel 2, thus cooling the surface of the preform and reducing the surface temperature of the preform, making the temperature inside and outside the preform as uniform as possible.

[0029] The distance between the lamp tube body 61 and the preform can be adjusted within the range of the lamp holder adjustment hole. The vertical strip hole 53 allows for fine-tuning of the vertical height of the directional radiation groove frame 5. Furthermore, the bracket 1 is a height-adjustable lifting bracket 1, thereby adjusting the overall height of the heating lamp tube 6.

[0030] The fifth edition of the "Mechanical Design Handbook," published in Beijing in April 2008 (the 28th printing of the fifth edition), details the specific structure, principles, and designs of cylinders, motors, and other transmission mechanisms. These are existing technologies, and their structures are clear and straightforward. The book "Motor Drive and Speed ​​Regulation," published by Chemical Industry Press on July 1, 2015, also provides a detailed introduction to motor control and limit switches. Therefore, the circuit and air circuit connections are clear.

[0031] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and alterations to the technical solution of the present utility model without departing from its design spirit shall fall within the protection scope defined by the claims of the present utility model.

Claims

1. A directional heating device for irregularly shaped bottle preforms, the directional heating device being installed on the bottle preform conveyor line and located upstream of the blow molding mechanism, characterized in that: The device includes a support spanning both sides of the preform conveyor line. The support has a heating channel to facilitate the passage of the preforms. On both sides of the conveyor line, there are directional heating boxes, each with an identical structure. The side plate of each directional heating box closest to the heating channel is a perforated plate. Several U-shaped directional radiation grooves are fixed to the perforated plate, extending vertically. Heating lamps are fixedly installed within each directional radiation groove. A fan is also installed on each directional heating box to blow air towards the heating channel. A suction hood is fixed to the top of each directional heating box on both sides of the conveyor line, positioned above the heating channel.

2. The directional heating device for irregularly shaped bottle preforms as described in claim 1, characterized in that: The interior of the directional heating box is fixed with an upper crossbeam and a lower crossbeam, and the directional radiation trough frame is fixed on the upper crossbeam and the lower crossbeam.

3. The directional heating device for irregularly shaped bottle preforms as described in claim 2, characterized in that: The heating lamp tube includes a lamp tube body, with an upper lamp holder and a lower lamp holder fixedly installed at both ends of the lamp tube body. The upper lamp holder and the lower lamp holder are respectively fixed on the upper crossbeam and the lower crossbeam, and the lamp tube body is located within the directional radiation groove frame.

4. The directional heating device for irregularly shaped bottle preforms as described in claim 3, characterized in that: The upper and lower crossbeams are made of profiles, and straight grooves are provided on the four side walls of the profiles. The upper and lower lamp holders are provided with lamp holder adjustment strip holes perpendicular to the length of the profiles. The upper and lower lamp holders are fixed on the straight grooves by bolt and nut structures constrained in the lamp holder adjustment strip holes.

5. The directional heating device for irregularly shaped bottle preforms as described in claim 4, characterized in that: The directional radiation groove frame includes a bottom wall and two side walls. The bottom wall has vertically extending vertical slots. The directional radiation groove frame is fixed on the straight slide by a bolt and nut mechanism constrained within the vertical slots. Correspondingly, the perforated plate is also provided with clearance holes to facilitate the adjustment of the position of the directional radiation groove frame.

6. The directional heating device for irregularly shaped bottle preforms as described in claim 5, characterized in that: The bottom wall of the trough is also provided with airflow holes to facilitate airflow.

7. The directional heating device for irregularly shaped bottle preforms as described in claim 1, characterized in that: The bracket is a height-adjustable lifting bracket.

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