Blowing head facilitating bottle opening forming
By setting cooling air inlet and outlet holes in the blower head of the glass bottle, a cooling space is formed, which solves the problem of thermal expansion and deformation caused by the lack of cooling function of the existing blower head, and improves the molding accuracy of the glass bottle mouth.
Patent Information
- Application Number
- CN202420060698.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The existing glass bottle blowing head lacks cooling function, which leads to local deformation of the glass bottle mouth under thermal expansion, affecting the product dimensional accuracy.
A blowing head is designed to facilitate the formation of the bottle mouth. By setting cooling air inlet and outlet holes in the blowing head body, a cooling space is formed, and the cooling gas is used to cool the bottle mouth to reduce thermal expansion and deformation. The air blow head includes a blowing rod, a receiving chamber, a mounting hole, an exhaust passage and a cooling space. The lower end of the air blowing rod extends into the bottle inlet, the cooling air enters the outer space of the bottle inlet through the air inlet hole, and the air outlet discharges the cooling gas, Ensure that the glass bottle mouth continues to cool down during the molding process.
It effectively reduces the local deformation caused by thermal expansion of the glass bottle mouth, improves the dimensional accuracy of the bottle mouth after forming, and ensures the shape stability of the glass product.
Smart Images
Figure CN222226170U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glass bottle production and processing, in particular to an air blowing head which is convenient for bottle mouth molding. Background Art
[0002] In the pressure-blowing process for producing glass bottles, molten glass raw materials are added to the primary mold by self-priming or dripping. The raw materials are then processed into a blank with a bottle mouth using an extrusion mold. The blank is then transferred to the final mold and blown with air using a blow head. Once inflated, the blank fills the inner cavity of the final mold, ultimately forming the bottle. Since the final quality of the glass bottle is closely related to the final mold and the blow head, it is not difficult to see that the blow head is the most core component in the glass bottle production process.
[0003] For example, patent document No. 2016112620131 discloses a blowing head for forming glass products. The blowing head can effectively balance the pressure at the bottle mouth by setting a balancing air channel and a flow-equalizing ring to prevent problems such as bottle mouth cracks. However, it does not have a cooling function. When the molten glass product is blown into the bottle mouth, the gas will expand due to heat. The bottle mouth is prone to local deformation due to the thermal expansion, which affects the dimensional accuracy of the product. Therefore, the structure of the blowing head needs to be improved. Utility Model Content
[0004] The purpose of the utility model is to solve the above problems and to design a blowing head that is convenient for bottle mouth molding, thereby solving the problem that the existing blowing head has no cooling function and easily causes local thermal expansion and deformation of the glass bottle mouth.
[0005] The top of the bottle mouth is connected with the top wall of the bottle mouth, and the top of the bottle mouth is connected with the top wall of the bottle mouth. The middle of the blow head body is provided with a mounting hole that penetrates the accommodating cavity up and down, and a blow rod is threadedly connected to the mounting hole. The middle of the blow rod is provided with a blowing hole that penetrates up and down, and the lower end of the blow rod extends into the bottle mouth, and an exhaust channel for discharging gas in the bottle mouth to the outside is formed between the blow head body and the internal space of the bottle mouth, and a cooling space is formed between the inner wall of the accommodating cavity and the periphery of the bottle mouth, a plurality of cooling air inlet holes that penetrate up and down and connect the cooling space are provided on the blow head body, and a plurality of cooling air outlet holes that are connected with the cooling space are provided on the outer edge surface of the blow head body.
[0006] Preferably, the blowing head body includes a small bottle mouth blowing head body, the upper end of the blowing rod is threadedly connected to the mounting hole in the middle of the small bottle mouth blowing head body, and a small bottle mouth air outlet channel connected to the internal space of the bottle mouth is formed between at least a portion of the outer edge surface of the lower end of the blowing rod and the inner wall of the mounting hole, and the blowing head body is provided with at least one exhaust hole connected to the small bottle mouth air outlet channel.
[0007] Preferably, the exhaust hole is internally threadedly connected to an exhaust screw with a through hole, and outside the exhaust hole, a positioning piece is fixed to the vial mouth blowing head body by a screw, and the contact surface between the positioning piece and the exhaust hole in the exhaust direction is an arc surface.
[0008] Preferably, an annular connecting groove is provided on the top of the vial mouth blowing head body, a plurality of cooling air inlet holes are evenly distributed in the connecting groove, and the cooling air outlet holes are evenly distributed on the vial mouth blowing head body.
[0009] Preferably, the upper end of the cooling air inlet hole is provided with an internal thread.
[0010] Preferably, the blowing head body is a large bottle mouth blowing head body, and a flow equalizing plate is provided in the accommodating cavity at the bottom of the large bottle mouth blowing head body, and a through hole is opened in the middle of the flow equalizing plate. The upper end of the blowing rod passes through the through hole on the flow equalizing plate and is threadedly connected to the large bottle mouth blowing head body, wherein the top end of the bottle mouth can abut against the bottom of the flow equalizing plate.
[0011] Preferably, the lower end of the blowing rod is provided with a plurality of blowing flow holes distributed along the circumferential direction.
[0012] Preferably, the upper portion of the flow equalizing plate is provided with a first flow channel and a second flow channel along the circumference, wherein the second flow channel is located in the inner circle of the first flow channel, and a plurality of cooling air inlet holes are evenly distributed along the circumference of the large bottle mouth blowing head body, and the lower ends of the cooling air inlet holes are connected to the first flow channel.
[0013] Preferably, a plurality of cooling air equalizing holes are opened at the bottom of the first flow channel along the circumference, and the cooling air equalizing holes can connect the internal space of the bottle mouth with the external space of the bottle mouth and the first flow channel, and the cooling air outlet holes are connected with the space on the lower side of the equalizing plate.
[0014] Preferably, a plurality of exhaust outlets for connecting the second flow channel with the internal space of the bottle mouth are evenly distributed in the second flow channel, and a plurality of exhaust holes for connecting the space outside the large bottle mouth blowing head body with the second flow channel are opened on the large bottle mouth blowing head body.
[0015] Compared with the prior art, the beneficial effects are:
[0016] The utility model has the advantages of simple structure and good cooling effect. When the blowing head blows air into the bottle mouth, cooling gas is introduced into the peripheral space of the bottle mouth through the cooling air inlet hole on the blowing head, so as to cool the bottle mouth of the glass product and reduce the local deformation of the bottle mouth due to thermal expansion, so that the dimensional accuracy of the bottle mouth of the formed glass product is higher. The cooling air outside the bottle mouth will be discharged outwardly through the cooling air outlet hole on the blowing head, so that the bottle mouth can be cooled continuously during the blowing process. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:
[0018] Figure 1 This is a schematic diagram of the overall structure of the air blowing head in Example 1 of the present utility model;
[0019] Figure 2 Schematic diagram of the cross-sectional structure of the air blowing head in Example 1;
[0020] Figure 3 Schematic diagram of the exploded structure of the air blowing head in Example 1 in a cross-sectional state;
[0021] Figure 4 This is a schematic structural diagram of the small bottle mouth air blowing head body in Example 1;
[0022] Figure 5 Schematic diagram of the structure of the blowing rod in Example 1;
[0023] Figure 6 This is a schematic diagram of the overall structure of the air blowing head in Example 2 of the present utility model;
[0024] Figure 7 Schematic diagram of the explosion structure of the air blowing head in Example 2;
[0025] Figure 8 2 is a schematic cross-sectional view of the air blowing head in Example 2;
[0026] Figure 9 Schematic diagram of the exploded structure of the air blowing head in Example 2 in a cross-sectional state;
[0027] Figure 10 This is a schematic structural diagram of the large bottle mouth air blowing head body in Example 2;
[0028] Figure 11 Schematic diagram of the structure of the blowing rod in Example 2;
[0029] Figure 12It is a structural schematic diagram of the flow equalizing plate in Example 2.
[0030] In the figure, 1. the main body of the blowing head for the small bottle mouth; 2. the blowing rod; 201. the blowing equalizing hole; 3. the positioning piece; 4. the exhaust screw; 5. the screw; 6. the main body of the blowing head for the large bottle mouth; 7. the equalizing plate; 71. the first flow channel; 711. the cooling air equalizing hole; 72. the second flow channel; 721. the exhaust outlet; 101. the cooling air inlet hole; 102. the cooling air outlet hole; 103. the exhaust hole; 104. the cooling space. DETAILED DESCRIPTION
[0031] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0032] Example 1
[0033] like Figure 1-Figure 5 As shown, a preferred embodiment of the present invention proposes a blowing head that is convenient for bottle mouth molding. In this embodiment, the blowing head mainly includes a small bottle mouth blowing head body 1, a blowing rod 2, a positioning member 3 and other components, which are mainly used for molding the mouth of a glass bottle with a small bottle mouth, wherein a circular mounting hole is opened in the middle of the small bottle mouth blowing head body 1, and an internal thread is provided on the upper side of the inner side of the mounting hole. The blowing rod 2 in this embodiment has a large upper head and a small lower head. The upper end of the blowing rod 2 is threadedly connected to the mounting hole, and a through hole that passes through the upper and lower parts is opened in the middle of the blowing rod 2. At the same time, an inner hexagon is provided at the top of the through hole so that the blowing rod 2 can be rotated to adjust the depth of the lower end of the blowing rod 2 extending into the bottle mouth.
[0034] like Figure 2 、 Figure 3 and Figure 5 As shown, the diameter of the lower end (i.e., the small end) of the blow rod 2 is smaller than the diameter of the mounting hole. Therefore, an air outlet channel is formed between at least a portion of the outer edge surface of the lower end of the blow rod 2 and the inner wall of the mounting hole. Two exhaust holes 103 are provided on the inner wall of the air outlet channel, which are connected to the outside of the small bottle mouth blow head body 1. The diameter of the mounting hole is smaller than the inner diameter of the bottle mouth. Therefore, when air is blown into the bottle mouth through the blow rod 2 to form the glass bottle, the gas in the bottle will flow into the air outlet channel along the bottle mouth and finally be discharged outward through the exhaust holes 103.
[0035] refer to Figure 3, an exhaust screw 4 with a head through hole is threadedly connected in each exhaust hole 103, which is used to adjust the exhaust volume of the exhaust hole 103 so as to regulate the pressure in the bottle. In specific implementation, the exhaust volume can be adjusted by replacing the exhaust screws 4 with different apertures. The positioning member 3 is arranged at the position of the exhaust hole 103 outside the small bottle mouth blowing head body 1. The lower end of the positioning member 3 is fixedly connected to the small bottle mouth blowing head body 1 by a screw 5, and the side of the positioning member 3 facing the blowing direction of the exhaust hole 103 is an arc surface. In this way, the gas discharged from the through hole in the middle of the exhaust screw 4 can be discharged smoothly without affecting the fixing effect, and the exhaust noise is also eliminated.
[0036] like Figure 2-Figure 4 As shown, a circle of annular connecting grooves is provided on the top of the small bottle mouth blowing head body 1 along the circumference of the circular hole, and a plurality of cooling air inlet holes 101 are evenly distributed in the connecting groove and pass through the top and the bottom. The cooling air inlet holes 101 are connected obliquely downward to the circular accommodating cavity formed at the bottom of the small bottle mouth blowing head body 1. The upper end of the small bottle mouth blowing head body 1 is connected to the external cooling air source through the connecting groove, wherein the upper end of each cooling air inlet hole 101 is provided with an internal thread so that it can be tightly connected to the air pipe;
[0037] During blowing, the top of the bottle mouth will abut against the top wall of the accommodating cavity, so the inner and outer spaces of the bottle mouth are isolated. At this time, due to the thermal expansion of the gas during blowing, it is easy to cause local deformation of the bottle mouth. Therefore, a circle of cooling space 104 is formed between the outer periphery of the bottle mouth and the inner wall of the accommodating cavity. The cooling space 104 is connected to the cooling air inlet hole 101. At the same time, a plurality of cooling air outlet holes 102 are evenly distributed along the circumference on the lower side of the outer wall of the small bottle mouth blowing head. When the glass bottle is formed, cooling gas can be blown into the cooling space 104 outside the bottle mouth through the cooling air inlet hole 101, so that the glass bottle mouth can be quickly cooled and formed, reducing the deformation of the bottle mouth and improving the dimensional accuracy. The cooling air in the cooling space 104 will be discharged outward from the cooling air outlet hole 102.
[0038] Example 2
[0039] like Figure 6-Figure 12 As shown, the blowing head in this embodiment mainly includes a large bottle mouth blowing head body 6, a flow equalizing plate 7, a blowing rod 2 and other components. The blowing head is mainly used for blow molding of large bottle mouth glass bottles, wherein a circular accommodating cavity is formed at the bottom of the large bottle mouth blowing head body 6, and the flow equalizing plate 7 is located in the accommodating cavity, and a mounting hole is provided in the middle of the large bottle mouth blowing head body 6, and the upper end of the blowing rod 2 is small and the lower end is large. The upper end of the blowing rod 2 passes through the through hole in the middle of the flow equalizing plate 7 and is threadedly connected to the mounting hole. Since the lower end of the blowing rod 2 is larger, the flow equalizing plate 7 can be fixed on the top wall of the accommodating cavity;
[0040] refer to Figure 11 The lower end of the blowing rod 2 is in an outer hexagonal shape so that the blowing rod 2 can be twisted. The upper end of the blowing rod 2 has an air inlet hole. A number of blowing flow holes 201 connected to the air inlet hole are evenly distributed on the bottom of the blowing rod 2, so that the gas blown out by the blowing rod 2 can flow evenly to various places inside the glass bottle with a large bottle mouth.
[0041] refer to Figure 8 、 Figure 9 and Figure 12 , the flow equalizing plate 7 can mainly make the gas flow rate more uniform, and two annular flow channels are opened on the upper part of the flow equalizing plate 7, namely the first flow channel 71 and the second flow channel 72, wherein the second flow channel 72 is located in the inner circle of the first flow channel 71, wherein the above-mentioned multiple cooling air inlet holes 101 are evenly distributed along the mounting hole in the middle of the large bottle mouth blowing head body 6, and the lower end of the cooling air inlet hole 101 is obliquely downward and connected with the first flow channel 71, and the upper end of the flow equalizing plate 7 is in close contact with the top wall of the accommodating cavity, so that a closed space is formed between the first flow channel 71, the second flow channel 72 and the large bottle mouth blowing head body 6, the top end of the bottle mouth abuts against the bottom of the flow equalizing plate 7, and a cooling space 104 is formed between the outer edge surface of the bottle mouth and the inner wall of the accommodating cavity;
[0042] A plurality of cooling air equalizing holes 711 are evenly distributed in the circumferential direction of the bottom of the first flow channel 71. One end of the cooling air equalizing hole 711 extends to the inner wall of the first flow channel 71 near the outer side, and the other end extends into the position of the bottom of the equalizing plate 7 near the inner side of the bottle mouth. That is to say, at least a part of the cooling air equalizing hole 711 is connected with the space inside the bottle mouth. In this way, the cooling air equalizing hole 711 can be connected with the internal space of the bottle mouth and the cooling space 104 outside the bottle mouth at the same time. Since the thickness of the bottle mouth is relatively thick, the cooling effect on the bottle mouth is enhanced in this way. The plurality of cooling air equalizing holes 711 evenly distributed along the circumferential direction can evenly blow cold air to the bottle mouth, reducing the deformation of the bottle mouth. Firstly, the flow rate of the gas is more uniform, and secondly, the cooling temperature is more uniform.
[0043] There are multiple exhaust outlets 721 evenly distributed in the second flow channel 72, which are connected from top to bottom. The exhaust outlets 721 can connect the internal space of the bottle mouth with the second flow channel 72. At the same time, a plurality of exhaust holes 103 are provided on the large bottle mouth blowing head body 6 to connect the space in the second flow channel 72 with the outside of the large bottle mouth blowing head body 6. The exhaust holes 103 first extend upward and then extend toward the outer edge surface of the large bottle mouth blowing head body 6. The gas blown into the bottle mouth through the blowing rod 2 can enter the second flow channel 72 through the exhaust outlet 721 and finally be discharged from the exhaust hole 103. An exhaust screw 4 is also threadedly connected to the air outlet of each exhaust hole 103. The exhaust volume can be adjusted by replacing the exhaust screws 4 with different apertures.
[0044] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.
Claims
1. A blowing head for facilitating bottle mouth molding, comprising a blowing head body, a accommodating cavity for accommodating the bottle mouth is arranged at the bottom of the blowing head body, the top end of the bottle mouth can abut against the top wall of the accommodating cavity, a mounting hole penetrating the accommodating cavity is arranged in the middle of the blowing head body, a blowing rod (2) is threadedly connected to the mounting hole, a blowing hole penetrating the accommodating cavity is arranged in the middle of the blowing rod (2), the lower end of the blowing rod (2) extends into the bottle mouth, characterized in that: An exhaust passage for discharging gas in the bottle mouth to the outside is formed between the air blowing head body and the internal space of the bottle mouth, a cooling space (104) is formed between the inner wall of the accommodating cavity and the periphery of the bottle mouth, a plurality of cooling air inlet holes (101) penetrating the cooling space (104) from top to bottom are arranged on the air blowing head body, and a plurality of cooling air outlet holes (102) communicating with the cooling space (104) are arranged on the outer edge surface of the air blowing head body.
2. The blowing head for facilitating bottle mouth forming according to claim 1, characterized in that: The blowing head body comprises a small bottle mouth blowing head body (1), the upper end of the blowing rod (2) is threadedly connected to a mounting hole in the middle of the small bottle mouth blowing head body (1), and a small bottle mouth air outlet channel communicating with the internal space of the bottle mouth is formed between at least a part of the outer edge surface of the lower end of the blowing rod (2) and the inner wall of the mounting hole, and the blowing head body is provided with at least one exhaust hole (103) connected to the small bottle mouth air outlet channel.
3. The blowing head for facilitating bottle mouth forming according to claim 2, characterized in that: The exhaust hole (103) is internally threadedly connected with an exhaust screw (4) having a through hole. Outside the exhaust hole (103), a positioning piece (3) is fixed to the vial mouth blowing head body (1) via a screw (5). The contact surface between the positioning piece (3) and the exhaust hole (103) in the exhaust direction is an arc surface.
4. The blowing head for facilitating bottle mouth molding according to claim 3, characterized in that: An annular connecting groove is provided on the top of the small bottle mouth blowing head body (1), a plurality of cooling air inlet holes (101) are evenly distributed in the connecting groove, and the cooling air outlet holes (102) are evenly distributed on the small bottle mouth blowing head body (1).
5. The blowing head for facilitating bottle mouth molding according to claim 4, characterized in that: The upper end of the cooling air inlet hole (101) is provided with an internal thread.
6. The blowing head for facilitating bottle mouth molding according to claim 1, characterized in that: The blowing head body is a large bottle mouth blowing head body (6), and a flow equalizing plate (7) is arranged in the accommodating cavity at the bottom of the large bottle mouth blowing head body (6), and a through hole is opened in the middle of the flow equalizing plate (7). The upper end of the blowing rod (2) passes through the through hole on the flow equalizing plate (7) and is threadedly connected with the large bottle mouth blowing head body (6), wherein the top end of the bottle mouth can abut against the bottom of the flow equalizing plate (7).
7. The blowing head for facilitating bottle mouth molding according to claim 6, characterized in that: The lower end of the blowing rod (2) is provided with a plurality of blowing flow-distributing holes (201) distributed along the circumferential direction.
8. The blowing head for facilitating bottle mouth molding according to claim 6, characterized in that: The upper part of the flow equalizing plate (7) is provided with a first flow channel (71) and a second flow channel (72) along the circumferential direction, wherein the second flow channel (72) is located in the inner circle of the first flow channel (71), and a plurality of cooling air inlet holes (101) are evenly distributed along the circumference of the large bottle mouth blowing head body (6), and the lower ends of the cooling air inlet holes (101) are connected to the first flow channel (71).
9. The blowing head for facilitating bottle mouth molding according to claim 8, characterized in that: A plurality of cooling air equalizing holes (711) are provided at the bottom of the first flow channel (71) along the circumferential direction. The cooling air equalizing holes (711) can connect the internal space of the bottle mouth with the external space of the bottle mouth and the first flow channel (71). The cooling air outlet hole (102) is connected with the space on the lower side of the equalizing plate (7).
10. The blowing head for facilitating bottle mouth molding according to claim 8, characterized in that: A plurality of exhaust outlets (721) for connecting the second flow channel (72) with the internal space of the bottle mouth are evenly distributed in the second flow channel (72), and a plurality of exhaust holes (103) for connecting the space outside the large bottle mouth blowing head body (6) with the second flow channel (72) are provided on the large bottle mouth blowing head body (6).