Heating device of parison mold

Abstract

The utility model discloses a heating device of a parison mold and belongs to the technical field of glass machinery. Comprising a spray head, a translation mechanism, a funnel, a funnel rotating shaft and a fuel pipeline connected with the spray head, the spray head is arranged at the output end of the translation mechanism, a nozzle of the spray head is arranged downwards, the translation mechanism is arranged on the funnel rotating shaft and drives the spray head to move to the position above the funnel, and the fuel pipeline comprises an oxygen pipeline, a natural gas pipeline and a mixing pipeline; proportional valves are arranged on the oxygen pipeline and the natural gas pipeline. The translation mechanism and the spray head rotate along with the rotating shaft of the funnel, a dropping material drips to the prototype mold through the funnel to be formed and then moves to a forming gap of the forming mold, the translation mechanism drives the spray head to move to the position above the funnel, mixed gas is ignited to serve as an igniter, then on-off of oxygen and natural gas is controlled, flames can be generated, and the prototype mold is heated by the flames; the structure is simple, and after the spray head is moved away, the blank mold is immediately dropped, so that the temperature of an inner cavity of the blank mold is easier to maintain.

Description

Technical Field

[0001] A heating device for a preliminary mold belongs to the field of glass machinery technology. Background Technology

[0002] In existing processes, the production of glass bottles using row-and-column bottle-making machines is becoming increasingly mature. However, due to limitations imposed by factors such as space layout and cooling effect, the types of bottles produced by these machines are relatively limited. With the improvement of living standards, thick-bottomed and irregularly shaped glass bottles have broad application prospects in various fields such as cosmetics and skincare, food, wine, creative gifts, health products, and specialty pharmaceuticals. Their unique design and diverse shapes make them an important tool for enhancing product appeal and market competitiveness.

[0003] If thick-bottomed bottles and irregularly shaped bottles are produced on a row-type bottle-making machine, the preform must have sufficient time to cool in the forming mold. However, this leads to a problem: the initial mold will cool down due to the lack of heat radiation from the glass material. This cooling of the initial mold will result in cold mold defects in the produced glass bottles (cold mold defects such as cold spots and cold lines occur when the mold temperature is too low during glass bottle forming, causing the glass material to cool rapidly in localized areas after contacting the mold, resulting in a sharp increase in viscosity, poor forming, rough surface, uneven thickness, or even cracking). This will lead to the production of substandard glass bottles.

[0004] In existing technologies, as described in patent CN114105448A, to eliminate temperature changes in the mold caused by excessively long dripping intervals and avoid producing bottles and cans with cold mold defects, a heating device is provided on the side of the preform mold. This heating device is set on one side of the preform mold via a heating shaft. When heating is required, the heating shaft drives the nozzle to heat the preform mold. Since heating can only be carried out during the time between the preform bottle preform moving into the molding mold and the preform mold dripping again, the nozzle needs to be heated before the dripping falls. At this time, the preform mold is in a separated state. This device is not only structurally complex, but when the nozzle is removed, the temperature inside the separated preform mold cavity drops rapidly. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a heating device for a preliminary mold, which can be directly set on the funnel shaft, rotate and rise together with the funnel, and drive the nozzle structure to translate through the translation mechanism so that the nozzle is aimed at the top of the funnel to heat the preliminary mold.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The heating device of the initial mold includes a nozzle, a translation mechanism, a funnel, a funnel shaft, and a fuel pipeline connected to the nozzle. The nozzle is set at the output end of the translation mechanism, and the nozzle nozzle is set downward. The translation mechanism is set on the funnel shaft. The translation mechanism drives the nozzle to move to the top of the funnel. The fuel pipeline includes an oxygen pipeline, a natural gas pipeline, and a mixing pipeline. Proportional valves are provided on the oxygen pipeline and the natural gas pipeline.

[0007] Preferably, the nozzle is connected to the translation mechanism via a base, and the base has two open rings at both ends, with the nozzle positioned inside the open rings.

[0008] Preferably, it also includes a manifold assembly, which includes a compressed air manifold, a natural gas manifold, and an oxygen manifold. The natural gas manifold is connected to a natural gas pipeline and a mixing pipeline, respectively. The oxygen manifold is connected to an oxygen pipeline and a mixing pipeline, respectively. The compressed air manifold is connected to a translation mechanism.

[0009] Preferably, a gas mixer is provided between the natural gas manifold, the oxygen manifold, and the mixing line.

[0010] Preferably, both the oxygen pipeline and the natural gas pipeline are equipped with speed control valves.

[0011] Preferably, the nozzle has three annular through holes, the diameter of which gradually decreases from top to bottom, and the three annular through holes are arranged vertically parallel and equidistantly inside the nozzle. Each of the three annular through holes has a horizontal inlet connected to a fuel line. One of the annular through holes has a vertical outlet located at the center of the nozzle, and the other two annular through holes have multiple vertical outlets.

[0012] Preferably, a mounting bracket is provided between the two nozzles, and three T-shaped through holes are provided vertically inside the mounting bracket. The fuel pipeline is connected to one of the three T-shaped through holes respectively, and the other two through holes of each T-shaped through hole are connected to the inlet of the annular through hole at the same height of the two nozzles respectively.

[0013] Preferably, it also includes a cylinder mounting block, which consists of a fixed part and a movable part. The fixed part and the movable part form a through hole for the funnel shaft to pass through, and the translation mechanism is connected to the fixed part.

[0014] Preferably, the fuel line is provided with a first clamping seat and a second clamping seat at one end near the mounting bracket. The first clamping seat and the second clamping seat are provided with through holes for the fuel line to pass through. The first clamping seat and the second clamping seat clamp the fuel line in the middle and are fixed by bolts.

[0015] Compared with existing technologies, the beneficial effects of this technical solution are:

[0016] This invention features a translation mechanism and a nozzle mounted on the funnel's rotating shaft. The translation mechanism and nozzle rotate with the funnel shaft, allowing the material to drip through the funnel onto the initial mold, where it is shaped and then moved to the gap in the final mold. The translation mechanism moves the nozzle above the funnel, with its nozzle facing downwards. By controlling the spraying of mixed gas, the mixed gas is ignited, acting as an "igniter." By controlling the flow of oxygen and natural gas, a flame is generated, which heats the initial mold. This design is not only simple in structure but also allows for immediate dripping of material onto the initial mold after the nozzle is removed, making it easier to maintain the temperature inside the initial mold cavity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a heating device for a preliminary mold, which is installed on the preliminary mold station according to the present invention.

[0018] Figure 2 This is a schematic diagram of the heating device of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the nozzle of this utility model installed on the rotating shaft of the funnel.

[0020] Figure 4 This is a schematic diagram of the nozzle of this utility model installed on the funnel shaft from another angle.

[0021] Figure 5 This is a schematic diagram of the structure of the nozzle of this utility model mounted on the base.

[0022] Figure 6 This is a cross-sectional view of the mounting bracket of this utility model.

[0023] Figure 7 This is a structural schematic diagram of the base of this utility model.

[0024] Figure 8 This is a schematic diagram of the structure of the nozzle of this utility model.

[0025] Figure 9 This is a cross-sectional view of the nozzle of this utility model.

[0026] The components include: 1. Nozzle 101, First Inlet 102, Second Inlet 103, Third Inlet 104, Mixed Gas Outlet 105, Natural Gas Annular Through Hole 106, Natural Gas Outlet 2. Cylinder 3. Natural Gas Manifold 4. Oxygen Manifold 5. Compressed Air Manifold 6. Natural Gas Pipeline 7. Oxygen Pipeline 8. Mixing Pipeline 9. Cylinder Pipeline 10. Two-position five-way solenoid valve 11. Proportional Valve 12. Speed ​​Control Valve 13. Gas Mixer 14. Cylinder Mounting Block 1401, Fixed Part 1402, Movable Part 15. Mounting Plate 16. Funnel 17. Funnel Rotating Shaft 18. Funnel Mounting Arm 19. Prototype Mold 20. Frame 21. Mounting Frame 2101, First Outlet 2102, Second Outlet 2103, Third Outlet 22. Base 2201, Opening Ring 2202, Extension Part 23. First Clamping Seat 24. Second Clamping Seat. Detailed Implementation

[0027] Figures 1-9 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-9 The present invention will be further described below.

[0028] Reference Figure 1 Taking a two-drop bottle-making machine as an example, the initial mold 19 is mounted on the frame 20, and this invention is set on the funnel mechanism of the initial mold 19. This invention includes two nozzles 1, a translation mechanism and a fuel pipeline connected to the nozzles 1. The nozzles 1 are set at the output end of the translation mechanism, with the nozzles facing downwards. The translation mechanism is set on the funnel shaft 17. The translation mechanism rotates and rises and falls with the funnel shaft 17, which drives the nozzles 1 to rotate and rise and fall. When it is necessary to heat the initial mold 19, the translation mechanism drives the nozzles 1 to move to the top of the funnel 16, and the nozzles of the nozzles 1 are directly facing the inlet of the funnel 16. The fuel pipeline includes an oxygen pipeline 7, a natural gas pipeline 6, and a mixing pipeline 8. The oxygen pipeline 7 and the natural gas pipeline 6 are equipped with a proportional valve 11 and a speed regulating valve 12. By adjusting the proportional valve 11 and the speed regulating valve 12, and by inputting parameters into the control system, the flow rate and on / off state of the oxygen and natural gas can be controlled, thereby controlling the size, shape, and combustion time of the flame. The ignition device ignites the mixed gas sprayed from the nozzle 1, and the ignited flame heats the initial mold.

[0029] Reference Figure 2 The fuel line is connected to the fuel source through the manifold assembly, which is fixed on the distribution box at the top of the bottle making machine. The manifold assembly provides compressed air, natural gas and oxygen to the fuel line. The manifold assembly is equipped with a compressed air manifold 5, a natural gas manifold 3 and an oxygen manifold 4.

[0030] The natural gas manifold 3 and the oxygen manifold 4 are each equipped with two nozzles. One nozzle on the natural gas manifold 3 is connected to the natural gas pipeline 6, and the other nozzle is connected to the gas mixer 13. One nozzle on the oxygen manifold 4 is connected to the oxygen pipeline 7, and the other nozzle is connected to the gas mixer 13. After the oxygen and natural gas are mixed through the gas mixer 13, they enter the mixing pipeline 8. The ends of the mixing pipeline 8, the oxygen pipeline 7, and the natural gas pipeline 6 are connected to the nozzle 1 through hoses.

[0031] The compressed air manifold 5 is connected to the translation mechanism via a pipeline. The translation mechanism of this utility model is a cylinder 2. The cylinder 2 is connected to two cylinder pipelines 9, which are an air inlet pipeline and an air outlet pipeline. The two cylinder pipelines 9 are connected to the compressed air manifold 5 via a two-position five-way solenoid valve 10 to provide air to the cylinder 2, thereby driving the nozzle 1 to achieve telescopic movement.

[0032] Reference Figures 3-7 Cylinder 2 is mounted on funnel shaft 17 via cylinder mounting block 14. Funnel 16 is suspended on funnel shaft 17 via funnel mounting arm 18. Cylinder 2 is positioned above funnel 16. Funnel shaft 17 simultaneously drives funnel 16 and cylinder 2 to rotate and rise. The rectangular cylinder mounting block 14 consists of a fixed part 1401 and a movable part 1402. The fixed part 1401 and the movable part 1402 together form a through hole for funnel shaft 17 to pass through. Cylinder mounting block 14 is sleeved on funnel shaft 17, and movable part 1402 is fixed to fixed part 1401 by bolts.

[0033] The cylinder 2 is inclined and connected to the fixing part 1401. Its output end is connected to the mounting plate 15 and extends and retracts towards the funnel 16. The lower end of the mounting plate 15 extends inclined and is connected to one end of the base 22. The base 22 is a horizontal connecting plate, so the base 22 is suspended above the funnel 16. The two ends of the base 22 are respectively provided with two open rings 2201, and the two nozzles 1 are set in the open rings 2201. The opening of the nozzle 1 faces downward. The end of the open ring 2201 extends to form the extension part 2202 of the mounting bolt. The extension part 2202 is provided on the base 22 with bolt holes. The nozzle 1 is placed in the open ring 2201 and fixed to the base 22 by bolts in the bolt holes. Cylinder 2 drives nozzle 1 to extend and retract. When the output end extends, nozzle 1 is positioned above funnel 16, with the nozzle opening facing the inlet of funnel 16. When the output end retracts, nozzle 1 moves away from funnel 16, without affecting the material from entering the initial mold 19 from funnel 16.

[0034] A mounting bracket 21 is provided between the two nozzles 1. The rectangular mounting bracket 21 has three tee holes along its vertical direction. The fuel pipeline is connected to the two nozzles 1 through the three tee holes. Taking the tee hole connected to the natural gas pipeline 6 as an example, the three outlets of the tee hole are respectively located on three adjacent sides. The outlets on the opposite sides are the first outlet 2101 and the second outlet 2102. The first outlet 2101 and the second outlet 2102 are connected to the two nozzles 1 through pipelines. The middle outlet is the third outlet 2103, which is connected to the natural gas pipeline 6. Natural gas can enter the two nozzles 1 simultaneously through the natural gas pipeline 6.

[0035] The middle section of the natural gas pipeline 6, oxygen pipeline 7, and mixing pipeline 8 is a flexible hose, while the two ends connected to the manifold assembly and mounting bracket 21 are plastic pipelines. On the plastic pipeline near the mounting bracket 21, there is a first clamping seat 23 and a second clamping seat 24. The first clamping seat 23 and the second clamping seat 24 are rectangular seats with three semi-circular grooves equidistantly arranged vertically inside. When the first clamping seat 23 and the second clamping seat 24 clamp the natural gas pipeline 6, oxygen pipeline 7, and mixing pipeline 8 in the middle, the three pipelines pass through the three through holes respectively. The upper and lower ends of the first clamping seat 23 and the second clamping seat 24 are provided with bolt holes. The two clamping seats are fixed by bolts to prevent the fuel pipeline from shaking.

[0036] Reference Figures 8-9 The nozzle 1 has three annular through holes. The fuel line is connected to the three annular through holes through a hose. The three annular through holes are arranged vertically inside the nozzle 1. The distance between them and the axis of the nozzle 1 gradually increases from top to bottom. Each of the three annular through holes has one inlet, which is the first inlet 101, the second inlet 102 and the third inlet 103 from top to bottom. The annular through hole connected to the mixing line 8 has only one outlet. The mixed gas outlet 104 is arranged vertically at the center of the nozzle 1. The other two annular through holes have multiple outlets along the vertical direction. They are all evenly arranged on the lower side of the annular through holes with the mixed gas outlet 104 as the axis.

[0037] Taking the natural gas annular through-hole 105 as an example, the natural gas pipeline 6 passes through the mounting bracket 21 via a hose and is connected to two second inlets 102 respectively. After the natural gas enters the natural gas annular through-hole 105, it is sprayed out along multiple natural gas outlets 106, forming a circular natural gas outlet 106 with the mixed gas outlet 104 as the center.

[0038] The ignition device of this invention is a lighter. After the mixed gas coming out of the mixed gas outlet 104 is ignited by the lighter, the mixed gas continues to burn and then ignites the natural gas and oxygen coming out of other outlets. In other embodiments, the ignition device can also be an igniter and an ignition needle. The nozzle 1 has a knob for rotating the igniter, and the mixed gas is ignited by the igniter.

[0039] Work process:

[0040] The funnel 16 covers the initial mold 19 via the funnel shaft 17. At this time, the output end of the cylinder 2 is in a contracted state. The vertically falling droplets fall into the initial mold 19 through the funnel 16 and form the initial mold through the blow-blow method. After the initial mold is clamped to the molding station by the bottle clamping mechanism, the funnel 16 covers the initial mold 19 again via the funnel shaft 17. At this time, the cylinder 2 receives an instruction and drives the nozzle 1 to move above the funnel 16, and the nozzle of the nozzle 1 is directly facing the inlet of the funnel 16.

[0041] The control system sends a signal to control the mixed gas, oxygen and natural gas to enter the nozzle 1 through the mixing pipeline 8, oxygen pipeline 7 and natural gas pipeline 6 respectively. After the mixed gas is ignited, it acts as a pilot flame to ignite the natural gas and oxygen. By inputting parameters into the control system, the flow rate and on / off state of oxygen and natural gas can be controlled, thereby controlling the size, shape and burning time of the flame. The ignited flame heats the initial mold 19. The heat generated by the flame is used to compensate for the temperature drop of the initial mold 19 caused by the lack of heat radiation from the glass material.

[0042] Upon receiving the instruction to drip material again, the oxygen line 7 and the natural gas line 6 are closed through the proportional valve 11, ceasing to supply fuel to the nozzle 1. The flame on the nozzle 1 disappears. At this time, the cylinder 2 contracts, moving the nozzle 1 away from the funnel 16, so that the material can drip into the initial mold 19. This process is repeated in sequence.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A heating device for a preliminary mold, characterized in that: It includes a nozzle (1), a translation mechanism, a funnel (16), a funnel shaft (17), and a fuel line connected to the nozzle (1). The nozzle (1) is located at the output end of the translation mechanism, and the nozzle (1) is positioned with its nozzle facing downwards. The translation mechanism is located on the funnel shaft (17). The translation mechanism drives the nozzle (1) to move above the funnel (16). The fuel line includes an oxygen line (7), a natural gas line (6), and a mixing line (8). Proportional valves (11) are provided on the oxygen line (7) and the natural gas line (6).

2. The heating device for a preliminary mold according to claim 1, characterized in that: The nozzle (1) is connected to the translation mechanism through the base (22). The base (22) has two open rings (2201) at both ends, and the nozzle (1) is set inside the open rings (2201).

3. The heating device for a preliminary mold according to claim 1, characterized in that: The nozzle (1) has three annular through holes. The diameter of the three annular through holes gradually decreases from top to bottom. The three annular through holes are arranged vertically parallel and equidistantly inside the nozzle (1). Each of the three annular through holes has a horizontal inlet, which is connected to the fuel line. One of the annular through holes has a vertical outlet, which is located at the center of the nozzle (1). The other two annular through holes have multiple vertical outlets.

4. The heating device for a preliminary mold according to claim 3, characterized in that: A mounting bracket (21) is provided between the two nozzles (1). Three three-way through holes are provided vertically inside the mounting bracket (21). The fuel pipeline is connected to one of the three three-way through holes respectively. The other two through holes of each three-way through hole are connected to the inlet of the same annular through hole of the two nozzles (1) through the pipeline respectively.

5. The heating device for a preliminary mold according to claim 4, characterized in that: The fuel line is provided with a first clamping seat (23) and a second clamping seat (24) at one end near the mounting bracket (21). The first clamping seat (23) and the second clamping seat (24) are provided with through holes for the fuel line to pass through. The first clamping seat (23) and the second clamping seat (24) clamp the fuel line in the middle. The first clamping seat (23) and the second clamping seat (24) are fixed by bolts.

6. The heating device for a preliminary mold according to claim 1, characterized in that: It also includes a manifold assembly, which includes a compressed air manifold (5), a natural gas manifold (3) and an oxygen manifold (4). The natural gas manifold (3) is connected to the natural gas pipeline (6) and the mixing pipeline (8) respectively. The oxygen manifold (4) is connected to the oxygen pipeline (7) and the mixing pipeline (8) respectively. The compressed air manifold (5) is connected to the translation mechanism through the pipeline.

7. The heating device for a preliminary mold according to claim 6, characterized in that: A gas mixer (13) is provided between the natural gas manifold (3), the oxygen manifold (4) and the mixing line (8).

8. The heating device for a preliminary mold according to claim 1, characterized in that: Both the oxygen pipeline (7) and the natural gas pipeline (6) are equipped with speed control valves (12).

9. The heating device for a preliminary mold according to claim 1, characterized in that: It also includes a cylinder mounting block (14), which consists of a fixed part (1401) and a movable part (1402). The fixed part (1401) and the movable part (1402) form a through hole for the funnel shaft (17) to pass through. The translation mechanism is connected to the fixed part (1401).

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