Automatic bottle blowing device for edible vegetable oil bottle preforms

Abstract

The utility model discloses an automatic bottle blowing device for edible vegetable oil bottle blanks. The automatic bottle blowing device comprises a feed hopper, a spiral extrusion barrel, an extrusion die head, a bottle blank die, a die closing mechanism, a moving mechanism and a bottle blowing mechanism, the spiral conveyor is used for conveying molten plastic into the extrusion die head, and the extrusion die head is used for extruding the molten plastic out of a hollow plastic pipe blank; the mold closing mechanism is arranged below the extrusion mold head, the bottle blank mold is arranged in the mold closing mechanism, an oil bottle cavity is formed in the bottle blank mold and used for containing a plastic pipe blank, the two bottle blowing mechanisms are arranged on the two sides of the extrusion mold head respectively, and the moving mechanism is connected with the mold closing mechanism. According to the utility model, the bottle blowing mechanisms are respectively arranged on the two sides of the extrusion die head, and the positions of the bottle blank dies between the extrusion die head and the bottle blowing mechanisms are switched through the moving mechanism, so that plastic pipe blanks in the two groups of bottle blank dies can be simultaneously blown, and the production efficiency of oil bottles is improved.

Description

Technical Field

[0001] The utility model relates to the field of automatic bottle blowing, in particular to an automatic bottle blowing device for edible vegetable oil bottle embryos. Background Art

[0002] A bottle blowing device is a device that uses a blow molding process to make plastic particles into hollow containers. Currently, most bottle blowing devices are still two-step bottle blowing machines, that is, the plastic raw materials must be made into bottle embryos first, and then blown. Nowadays, environmentally friendly plastics made of PET are commonly used. A blow molding machine is a machine that uses the wind force blown out by the machine after the liquid plastic is sprayed out to blow the plastic body into a mold cavity of a certain shape to make a product. This machine is called a blow molding machine. It is also a type of bottle blowing machine, namely a hydraulic bottle blowing machine.

[0003] The tubular plastic preform obtained by extrusion or injection molding of thermoplastic resin is placed in a split mold while hot (or heated to a softened state). After the mold is closed, compressed air is immediately introduced into the preform to inflate the plastic preform and make it adhere tightly to the inner wall of the mold. After cooling and demolding, a plastic bottle body is obtained.

[0004] In the prior art, during the processing of the bottle body, the feeding speed of the tubular plastic preform is relatively fast, but the waiting time for blowing the bottle is relatively long, and the bottles are usually processed one by one, which easily affects the production efficiency of the bottle body; and the clamping mechanism of the traditional bottle blowing machine has poor stability when closing or opening the mold, and there is a possibility of opening and closing misalignment, which affects the production quality of the bottle body.

[0005] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an automatic bottle blowing device for edible vegetable oil bottle embryos with high production efficiency, reduced waiting period and high production quality.

[0007] To achieve this purpose, the utility model adopts the following technical solutions: an edible vegetable oil bottle preform automatic blowing device, including a feed hopper, a spiral extrusion cylinder, an extrusion die head, a bottle preform mold, a mold clamping mechanism, a moving mechanism and a bottle blowing mechanism;

[0008] The feed hopper is connected to the screw extrusion barrel to convey plastic particles into the screw extrusion barrel. A heating tube and a screw conveyor are arranged inside the screw extrusion barrel. The heating tube is used to heat the plastic particles in the screw extrusion barrel to form molten plastic.

[0009] The extrusion die is arranged at the tail of the spiral extrusion barrel, the screw conveyor is used to convey the molten plastic to the extrusion die, and the extrusion die is used to extrude the molten plastic into a hollow plastic tube embryo;

[0010] The mold clamping mechanism is arranged below the extrusion die head, the preform mold is arranged in the mold clamping mechanism, the preform mold has an oil bottle cavity, the oil bottle cavity is used to accommodate the plastic tube preform, and the mold clamping mechanism is used to drive the preform mold to open or close the mold;

[0011] The two groups of bottle blowing mechanisms are respectively arranged on both sides of the extrusion die head, and the moving mechanism is connected to the mold clamping mechanism. When the plastic tube embryo is accommodated in the oil bottle cavity, the moving mechanism is used to move the bottle embryo mold to the bottom of the bottle blowing mechanism, and the bottle blowing mechanism is used to blow air toward the plastic tube embryo in the oil bottle cavity so that the plastic tube embryo expands to form an oil bottle that matches the shape of the oil bottle cavity.

[0012] According to the above technical solution, in the automatic blowing device for edible vegetable oil preforms, the clamping mechanism includes a fixed clamping plate, a movable clamping plate, a first cylinder and a first guide rail;

[0013] The fixed joint plate is arranged at the end of the first guide rail, the movable joint plate is connected to the first guide rail through a linear bearing, and the movable joint plate can slide along the length direction of the first guide rail, the first cylinder is arranged on a side of the movable joint plate away from the fixed joint plate, and the movable end of the first cylinder is connected to the movable joint plate.

[0014] By adopting the above-mentioned technical solutions, in the automatic blowing device for edible vegetable oil preforms, the preform mold includes a first template and a second template;

[0015] The first template is arranged on the side wall of the fixed template, the second template is arranged on the side wall of the movable template, and the wall surfaces of the first template and the second template facing each other are provided with a half cavity for forming the oil bottle cavity.

[0016] By adopting the above-mentioned technical solutions, in the automatic blowing device for edible vegetable oil preforms, a positioning rod is provided on the first template, and a positioning hole is provided on the second template;

[0017] When the movable clamping plate approaches the fixed clamping plate for mold closing under the drive of the first cylinder, the positioning rod is adapted and plugged into the positioning hole.

[0018] By adopting the above-mentioned technical solutions, in the automatic blowing device for edible vegetable oil preforms, the moving mechanism includes a moving carrier plate, a second guide rail, a slider and a second cylinder;

[0019] The mold clamping mechanism is arranged on the movable carrier plate, the bottom of the movable carrier plate is connected to the second guide rail through a slider, the second guide rail is vertically arranged with the first guide rail and is located between the two bottle blowing mechanisms, and the movable end of the second cylinder is connected to the bottom of the movable carrier plate to drive the movable carrier plate to slide along the second guide rail to switch the position of the preform mold.

[0020] By adopting the above-mentioned technical solutions, in the automatic blowing device for edible vegetable oil preforms, the blowing mechanism includes a third cylinder, a lifting plate and a blowing needle;

[0021] The movable end of the third cylinder is arranged downward and connected to the lifting plate. The blowing needle is arranged on the lifting plate and approaches or moves away from the bottle embryo mold as the third cylinder moves. The blowing needle is used to blow gas into the plastic tube embryo in the oil bottle cavity.

[0022] By adopting the above-mentioned technical solutions, in the automatic blowing device for edible vegetable oil preforms, the clamping mechanism also includes a cylinder fixing plate and a connecting rod, the cylinder fixing plate is arranged on a side of the movable clamping plate away from the fixed clamping plate, the cylinder fixing plate and the fixed clamping plate are connected by the connecting rod, and the cylinder fixing plate is used to fix the first cylinder.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The spiral extruder of the utility model can heat plastic particles to become molten plastic, and transport the molten plastic to the extrusion die head through the spiral action. The extrusion die head can extrude the molten plastic to form a hollow plastic tube embryo, and squeeze the plastic tube embryo into the oil bottle cavity of the bottle embryo mold. The bottle blowing mechanism can blow air to the plastic tube embryo in the oil bottle cavity, so that the plastic tube embryo expands to form an oil bottle that matches the shape of the oil bottle cavity; by respectively arranging the bottle blowing mechanism on both sides of the extrusion die head, and switching the position of the bottle embryo mold between the extrusion die head and the bottle blowing mechanism through the moving mechanism, such an arrangement can realize the simultaneous blowing of the plastic tube embryos in the two groups of bottle embryo molds, thereby improving the production efficiency of the oil bottle; by arranging the first guide rail on the mold closing mechanism, and arranging the mutually matching positioning rods and positioning holes on the first template and the second template, the moving stability of the bottle embryo mold during the mold opening and mold closing operations can be improved, and the mold misalignment can be avoided, thereby improving the production quality of the oil bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0027] Figure 1 It is a front structural schematic diagram of the utility model;

[0028] Figure 2 This is a schematic diagram of the installation structure of the spiral extruder barrel of the utility model;

[0029] Figure 3 It is a schematic diagram of the installation structure between the mold clamping mechanism and the preform mold of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the preform mold of the utility model;

[0031] Figure 5 It is a schematic diagram of the structure of the mobile mechanism of the utility model. DETAILED DESCRIPTION

[0032] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0034] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0035] like Figures 1 to 5 As shown, the embodiment of the utility model provides an automatic blowing device for edible vegetable oil preforms, including a feed hopper 1, a spiral extrusion cylinder 2, an extrusion die head 3, a preform mold 4, a clamping mechanism 5, a moving mechanism 6 and a blowing mechanism 7;

[0036] The feed hopper 1 is connected to the spiral extrusion barrel 2 to convey plastic particles into the spiral extrusion barrel 2. A heating tube (not shown) and a screw conveyor (not shown) are provided inside the spiral extrusion barrel 2. The heating tube is used to heat the plastic particles in the spiral extrusion barrel 2 to form molten plastic. The extrusion die is provided at the tail of the spiral extrusion barrel 2. The screw conveyor is used to convey the molten plastic to the extrusion die 3. The extrusion die 3 is used to extrude the molten plastic into a hollow plastic tube embryo. It should be noted that the spiral extrusion barrel 2 and the extrusion die 3 are already disclosed prior art, and this embodiment will not elaborate on the specific structure and working principle of the spiral extrusion barrel 2 and the extrusion die 3.

[0037] like Figure 1 and Figure 4 As shown, the clamping mechanism 5 is arranged below the extrusion die head 3, the preform mold 4 is arranged in the clamping mechanism 5, the preform mold 4 has an oil bottle cavity 400, the oil bottle cavity 400 is used to accommodate the plastic tube preform, and the clamping mechanism 5 is used to drive the preform mold 4 to open or close the mold; the clamping mechanism 5 can drive the preform mold 4 to close or open accurately, and during the molding process, the preform mold 4 needs to maintain a sealed state so that the plastic tube preform can be blow molded smoothly.

[0038] like Figure 1As shown, two groups of the blowing mechanisms 7 are respectively arranged on both sides of the extrusion die 3, and the moving mechanism 6 is connected to the clamping mechanism 5. When the plastic tube preform is accommodated in the oil bottle cavity 400, the moving mechanism 6 is used to move the bottle preform mold 4 to the bottom of the blowing mechanism 7, and the blowing mechanism 7 is used to blow air toward the plastic tube preform in the oil bottle cavity 400, so that the plastic tube preform expands to form an oil bottle that matches the shape of the oil bottle cavity 400. Since the feeding speed of the extrusion die 3 is fast, and the blowing molding rate of the blowing mechanism 7 is slow, by respectively arranging the blowing mechanisms 7 on both sides of the extrusion die 3, and switching the position of the bottle preform mold 4 between the extrusion die 3 and the blowing mechanism 7 through the moving mechanism 6, such an arrangement can realize the plastic tube preforms in the two groups of bottle preform molds 4 to be blown at double stations at the same time, thereby improving the production efficiency of oil bottles.

[0039] like Figure 3 As shown, further, the mold clamping mechanism 5 includes a fixed clamping plate 51, a movable clamping plate 52, a first cylinder 53 and a first guide rail 54, the fixed clamping plate 51 is arranged at the end of the first guide rail 54, the movable clamping plate 52 is connected to the first guide rail 54 through a linear bearing 55, and the movable clamping plate 52 can slide along the length direction of the first guide rail 54, the first cylinder 53 is arranged on the side of the movable clamping plate 52 away from the fixed clamping plate 51, and the movable end of the first cylinder 53 is connected to the movable clamping plate 52, when the mold closing operation is required, the first cylinder 53 drives its movable end to push toward the direction of the fixed clamping plate 51, so that the movable clamping plate 52 gradually approaches the fixed clamping plate 51 and gradually closes, and by arranging the first guide rail 54 on the mold clamping mechanism 5, the moving stability of the mold clamping mechanism 5 during mold opening and closing operations can be improved, mold misalignment can be avoided, and the production quality of the oil bottle can be improved.

[0040] like Figure 3 and Figure 4 As shown, further, the preform mold 4 includes a first template 41 and a second template 42, the first template 41 is arranged on the side wall of the fixed template 51, and the second template 42 is arranged on the side wall of the movable template 52, and the first template 41 and the second template 42 are provided with a half cavity 40 for forming the oil bottle cavity 400 on the wall surfaces facing each other; the half cavity 40 on the first template 41 and the second template 42 are combined together to form a complete oil bottle cavity 400, which is used for blowing and expanding the preform to a desired shape, thereby obtaining an oil bottle product.

[0041] like Figure 4As shown, further, the first template 41 is provided with a positioning rod 411, and the second template 42 is provided with a positioning hole 421. When the movable clamping template 52 is driven by the first cylinder 53 to approach the fixed clamping template 51 for mold closing, the positioning rod 411 is adapted to be plugged into the positioning hole 421. The arrangement of the positioning rod 411 and the positioning hole 421 can improve the alignment accuracy of the preform mold 4 during the closing process, avoid mold misalignment or offset, and thus ensure the molding accuracy and quality of the oil bottle.

[0042] like Figure 3 and Figure 5 As shown, further, the moving mechanism 6 includes a moving carrier plate 61, a second guide rail 62, a slider 63 and a second cylinder 64, the mold clamping mechanism 5 is arranged on the moving carrier plate 61, the bottom of the moving carrier plate 61 is connected to the second guide rail 62 through the slider 63, the second guide rail 62 is vertically arranged with the first guide rail 54 and is located between the two blowing mechanisms 7, the movable end of the second cylinder 64 is connected to the bottom of the moving carrier plate 61 to drive the moving carrier plate 61 to slide along the second guide rail 62 to switch the position of the preform mold 4, so that the preform mold 4 can be switched between the two stations of receiving the plastic tube embryo squeezed from the extrusion die head 3 and blowing the plastic tube embryo, thereby improving the processing efficiency of the oil bottle.

[0043] like Figure 1 and Figure 2 As shown, further, the bottle blowing mechanism 7 includes a third cylinder 71, a lifting plate 72 and a blowing needle 73. The movable end of the third cylinder 71 is arranged downward and connected to the lifting plate 72. The blowing needle 73 is arranged on the lifting plate 72 and approaches or moves away from the bottle preform mold 4 as the third cylinder 71 moves. The blowing needle 73 is used to blow gas into the plastic tube embryo in the oil bottle cavity 400. The third cylinder 71 can control the up and down movement of the lifting plate 72, thereby adjusting the distance between the blowing needle 73 and the bottle preform mold 4. The blowing needle 73 can blow gas into the plastic tube embryo in the oil bottle cavity 400. The injection of gas will cause the plastic tube embryo to expand to fill the oil bottle cavity 400 of the mold, thereby forming the shape of the oil bottle. It should be noted that the pressure and blowing time of the gas can be adjusted according to the required shape and thickness of the oil bottle to ensure that the quality and shape of the oil bottle meet the requirements.

[0044] like Figure 3 and Figure 5As shown, further, the clamping mechanism 5 also includes a cylinder fixing plate 56 and a connecting rod 57. The cylinder fixing plate 56 is arranged on a side of the movable clamping plate 52 away from the fixed clamping plate 51. The cylinder fixing plate 56 and the fixed clamping plate 51 are connected by the connecting rod 57. The cylinder fixing plate 56 is used to fix and install the first cylinder 53. The cylinder fixing plate 56 is used to fix and install the first cylinder 53 to support the first cylinder 53, and the connecting rod 57 is used to connect the cylinder fixing plate 56 and the fixed clamping plate 51, thereby improving the overall structural stability of the clamping mechanism 5, so that it can be smoothly pushed into position by the moving mechanism 6.

[0045] The spiral extrusion barrel 2 of the utility model can heat plastic particles to become molten plastic, and transport the molten plastic to the extrusion die 3 through the spiral action. The extrusion die 3 can extrude the molten plastic to form a hollow plastic tube embryo, and squeeze the plastic tube embryo into the oil bottle cavity 400 of the bottle embryo mold 4. The bottle blowing mechanism 7 can blow the plastic tube embryo in the oil bottle cavity 400 to expand the plastic tube embryo to form an oil bottle that matches the shape of the oil bottle cavity 400. By respectively arranging the bottle blowing mechanism 7 on both sides of the extrusion die 3 and switching the position of the bottle embryo mold 4 between the extrusion die 3 and the bottle blowing mechanism 7 through the moving mechanism 6, the plastic tube embryos in the two groups of bottle embryo molds 4 can be blown at the same time, thereby improving the production efficiency of the oil bottle. By arranging the first guide rail 54 on the clamping mechanism 5 and arranging the positioning rod 411 and the positioning hole 421 that cooperate with each other on the first template 41 and the second template 42, the moving stability of the bottle embryo mold 4 during the mold opening and closing operations can be improved, and the mold misalignment can be avoided, thereby improving the production quality of the oil bottle.

[0046] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An automatic blowing device for edible vegetable oil preforms, characterized in that: It includes a feed hopper, a spiral extruder, an extrusion die head, a preform mold, a clamping mechanism, a moving mechanism and a bottle blowing mechanism; The feed hopper is connected to the screw extrusion barrel to convey plastic particles into the screw extrusion barrel. A heating tube and a screw conveyor are arranged inside the screw extrusion barrel. The heating tube is used to heat the plastic particles in the screw extrusion barrel to form molten plastic. The extrusion die head is arranged at the tail of the spiral extrusion barrel, the screw conveyor is used to convey the molten plastic into the extrusion die head, and the extrusion die head is used to extrude the molten plastic into a hollow plastic tube embryo; The mold clamping mechanism is arranged below the extrusion die head, the preform mold is arranged in the mold clamping mechanism, the preform mold has an oil bottle cavity, the oil bottle cavity is used to accommodate the plastic tube preform, and the mold clamping mechanism is used to drive the preform mold to open or close the mold; The two groups of bottle blowing mechanisms are respectively arranged on both sides of the extrusion die head, and the moving mechanism is connected to the mold clamping mechanism. When the plastic tube embryo is accommodated in the oil bottle cavity, the moving mechanism is used to move the bottle embryo mold to the bottom of the bottle blowing mechanism, and the bottle blowing mechanism is used to blow air toward the plastic tube embryo in the oil bottle cavity so that the plastic tube embryo expands to form an oil bottle that matches the shape of the oil bottle cavity.

2. The automatic blowing device for edible vegetable oil preforms according to claim 1, characterized in that: The clamping mechanism comprises a fixed clamping plate, a movable clamping plate, a first cylinder and a first guide rail; The fixed joint plate is arranged at the end of the first guide rail, the movable joint plate is connected to the first guide rail through a linear bearing, and the movable joint plate can slide along the length direction of the first guide rail, the first cylinder is arranged on a side of the movable joint plate away from the fixed joint plate, and the movable end of the first cylinder is connected to the movable joint plate.

3. The automatic blowing device for edible vegetable oil preforms according to claim 2, characterized in that: The preform mold includes a first template and a second template; The first template is arranged on the side wall of the fixed template, the second template is arranged on the side wall of the movable template, and the wall surfaces of the first template and the second template facing each other are provided with a half cavity for forming the oil bottle cavity.

4. The automatic blowing device for edible vegetable oil preforms according to claim 3 is characterized in that: The first template is provided with a positioning rod, and the second template is provided with a positioning hole; When the movable clamping plate approaches the fixed clamping plate for mold closing under the drive of the first cylinder, the positioning rod is adapted and plugged into the positioning hole.

5. The automatic blowing device for edible vegetable oil preforms according to claim 3 is characterized in that: The moving mechanism includes a moving carrier plate, a second guide rail, a slider and a second cylinder; The mold clamping mechanism is arranged on the movable carrier plate, the bottom of the movable carrier plate is connected to the second guide rail through a slider, the second guide rail is vertically arranged with the first guide rail and is located between the two bottle blowing mechanisms, and the movable end of the second cylinder is connected to the bottom of the movable carrier plate to drive the movable carrier plate to slide along the second guide rail to switch the position of the preform mold.

6. The automatic blowing device for edible vegetable oil preforms according to claim 1, characterized in that: The bottle blowing mechanism comprises a third cylinder, a lifting plate and a blowing needle; The movable end of the third cylinder is arranged downward and connected to the lifting plate. The blowing needle is arranged on the lifting plate and approaches or moves away from the bottle embryo mold as the third cylinder moves. The blowing needle is used to blow gas into the plastic tube embryo in the oil bottle cavity.

7. The automatic blowing device for edible vegetable oil preforms according to claim 5, characterized in that: The mold clamping mechanism also includes a cylinder fixing plate and a connecting rod. The cylinder fixing plate is arranged on a side of the movable clamping plate away from the fixed clamping plate. The cylinder fixing plate and the fixed clamping plate are connected by the connecting rod. The cylinder fixing plate is used to fix and install the first cylinder.

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