A preform mold for an infusion bottle with integrated hanging ring

Abstract

The present invention discloses a preform mold for an infusion bottle with a hanging ring, comprising a machine body, an injection core, a mouth mold, a preform body mold, a preform body bottom mold and a hanging ring bottom mold; the preform body bottom mold is arranged on the machine body and located above the hanging ring bottom mold; the preform body bottom mold comprises two bottom mold plates, and the two bottom mold plates can move along the width direction of the machine body to approach or move away from each other; the bottom mold plates are provided with guide holes; the guide holes are gradually inclined outward from bottom to top; the preform body mold is arranged on the machine body and located above the preform body bottom mold; a preform body injection cavity is arranged in the preform body bottom mold; an elastic component is clamped between the lower end surface of the preform body mold and the machine body; the elastic component is used to provide elastic stress for the preform body mold to move upward; oblique guide columns are arranged on both sides of the lower end of the preform body mold, and the oblique guide columns are used to be inserted into the guide holes when closing the mold to guide the two bottom mold plates to approach each other. The preform mold for the infusion bottle with a hanging ring of the present invention effectively shortens the length of the mold closing line on the preform body, and the outer wall of the preform body is relatively smooth; the cooling effect is relatively uniform.

Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing moulds, in particular to a preform mould for an infusion bottle with an integrated hanging ring. Background Art

[0002] At present, existing plastic bottles are all made by bottle blowing machines. During the preparation process, the preform needs to be formed first, and then the preform is blown to form it. The forming of the preform mainly depends on the preform mold. The preform mold generally includes two half-bottom molds for forming the bottle body, two half-mouth molds for forming the bottle mouth, and a core injection.

[0003] During the preform injection molding process, when the mold is closed, the injection core moves downward under the drive mechanism of the mold body; at the same time, the two half-opening molds can be driven by the drive mechanism on the mold body to approach each other and move downward, and be mounted on the upper end of the injection core; the inner walls of the two half-opening molds cooperate with the upper outer wall of the injection core to form a first injection channel when the mold is closed; and the two half-bottom molds can be driven by the drive mechanism of the mold body to approach each other and be mounted on the middle and lower ends of the injection core, and the upper end faces of the half-bottom molds and the lower end faces of the half-opening molds are used for sealing when the mold is closed; the inner walls of the two half-bottom molds cooperate with the middle and lower outer walls of the injection core to form a second injection channel when the mold is closed, and the second injection channel is connected to the first injection channel to form a preform cavity, and a glue injection port connected to the preform cavity is provided on the mold, and glue is injected through the glue injection port, and plastic flows into the preform cavity, and is formed after cooling, and then the mold can be opened.

[0004] In the existing preform mold, since the bottle body is formed by two half-bottom molds connected together and then injected, there must be a certain gap between the two connected half-bottom molds. When the bottle body is formed, a small amount of plastic will enter the gap between the two connected half-bottom molds and be formed in the height direction of the preform body after the mold is opened. In this way, the mold opening line of the mold is along the height direction of the entire bottle body, making the bottle body uneven. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a preform mold for an infusion bottle with an integrated hanging ring, which can concentrate the parting line of the preform at the bottom of the preform after molding, thereby shortening the parting line.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A preform mold for an infusion bottle with a hanging ring, comprising a body, an injection core movable along the height direction of the body, a mouth mold, a preform body mold, a preform body bottom mold and a hanging ring bottom mold fixed to the body; the mouth mold is used to cooperate with the upper end outer wall of the injection core to form a preform mouth molding gap when the mold is closed;

[0008] The embryo body bottom mold is arranged on the machine body and is located above the hanging ring bottom mold; the embryo body bottom mold includes two bottom mold plates, and the two bottom mold plates can move along the width direction of the machine body to approach or move away from each other; the bottom mold plates are provided with guide holes; the guide holes are gradually inclined outward from bottom to top; the lower end surface of the embryo body bottom mold is used to cooperate with the upper end surface of the hanging ring bottom mold to form a hanging ring molding gap when the mold is closed; the upper end surface of the embryo body bottom mold is used to cooperate with the lower end of the injection core to form a bottle embryo bottom molding gap when the mold is closed; the bottle embryo bottom molding gap is connected with the hanging ring molding gap;

[0009] The embryo body mold is arranged on the machine body and is located above the embryo body bottom mold; the embryo body mold can move along the height direction of the machine body; the embryo body bottom mold is provided with an embryo body injection cavity; the embryo body injection cavity is used for allowing an injection core to extend into and cooperate with the middle end outer wall of the injection core to form an embryo body molding gap when the mold is closed; the embryo body molding gap is connected with the bottle embryo bottom molding gap; an elastic component is clamped between the lower end surface of the embryo body mold and the machine body; the elastic component is used to provide elastic stress for the embryo body mold to move upward; inclined guide pillars are arranged on both sides of the lower end of the embryo body mold, and the inclined guide pillars are used to be inserted into the guide holes when the mold is closed to guide the two bottom mold plates to approach each other.

[0010] Furthermore, the mouth mold is arranged on the machine body and is located above the embryo body mold, and the mouth mold includes two mouth mold plates; the two mouth mold plates can move along the height direction of the machine body and can approach or move away from each other along the width direction of the machine body; the inner walls of the two mouth mold plates are sleeved on the upper end of the injection core when the mold is closed and cooperate with the outer wall of the upper end of the injection core to form a bottle embryo mouth molding gap.

[0011] Furthermore, a die driving mechanism is provided on the machine body, and the die driving mechanism is used to drive the two die plates to move along the height direction of the machine body; and to drive the two die plates to move closer to or farther away from each other along the width direction of the machine body.

[0012] Furthermore, two elastic components are provided, and the two elastic components are respectively arranged on two sides of the body.

[0013] Furthermore, the elastic component is a spring, and a mounting groove extending along the height direction of the body is provided on the body; one end of the spring is fixed in the mounting groove; the other end of the spring extends out of the mounting groove and is fixed to the lower end surface of the embryo body mold.

[0014] Furthermore, a core injection driving mechanism is also provided on the machine body, and the core injection driving mechanism is used to drive the core injection to move along the height direction of the machine body.

[0015] Furthermore, the lower end surfaces of the two bottom mold plates are each provided with a first hanging ring forming groove; the two first hanging ring forming grooves are connected when the mold is closed; the upper end surface of the hanging ring bottom mold is provided with a second hanging ring forming groove; the two first hanging ring forming grooves and the second hanging ring forming groove are used to cooperate to form the said hanging ring forming gap when the mold is closed.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The preform body mold is provided with a preform body injection cavity for the injection core to directly extend into, so as to directly form the preform body of the bottle preform. The preform bottom of the bottle preform can be formed by two bottom mold plates approaching each other and cooperating with the lower end of the injection core. In this way, the parting line of the bottle preform after forming only exists at the bottom of the bottle preform, which effectively shortens the length of the parting line on the preform body of the bottle preform, so that the outer wall of the preform body after forming is smoother.

[0018] (2) When the mold is opened, when the injection core moves upward, the pressure exerted by the injection core on the embryo body mold is reduced. When the embryo body mold can move upward under the action of the elastic component, the embryo body mold can move upward for a distance along with the formed bottle preform. During this process, the inclined guide column at the lower end of the embryo body mold will first guide the two bottom mold plates of the embryo body bottom mold to move away from each other, completing the mold opening of the bottom of the bottle preform. The embryo body and the mouth of the bottle preform have not yet separated from the corresponding embryo body mold and mouth mold. Therefore, the embryo body and the mouth of the bottle preform can go through the same cooling time, so that the cooling effect of the whole bottle preform is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] In the figure: 10, machine body; 11, preform mouth molding gap; 12, preform body molding gap; 13, preform bottom molding gap; 14, ring molding gap; 20, core injection; 30, mouth mold; 40, preform body mold; 41, inclined guide column; 50, bottom mold plate; 60, ring bottom mold; 70, elastic component. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0022] like Figure 1 The preform mold of a hanging ring integrated infusion bottle shown in the figure comprises a body 10, an injection core 20, a mouth mold 30, a preform body mold 40, a preform body bottom mold and a hanging ring bottom mold 60; the injection core 20, the mouth mold 30, the preform body mold 40, the preform body bottom mold and the hanging ring bottom mold 60 are all installed on the body 10. The injection core 20 can move along the height direction of the body 10, and the mouth mold 30 is used to cooperate with the upper end outer wall of the injection core 20 to form a preform mouth molding gap 11 when the mold is closed; the hanging ring bottom mold 60 is fixedly connected to the body 10.

[0023] Specifically, the embryo body bottom mold is arranged above the hanging ring bottom mold 60. The embryo body bottom mold includes two bottom mold plates 50, and the two bottom mold plates 50 can move toward or away from each other along the width direction of the machine body 10. A guide hole is arranged on the bottom mold plate 50, and the guide hole gradually tilts outward from bottom to top. The lower end surface of the embryo body bottom mold is used to cooperate with the upper end surface of the hanging ring bottom mold 60 to form a hanging ring molding gap 14 when the mold is closed; and the upper end surface of the embryo body bottom mold is used to cooperate with the lower end of the injection core 20 to form a bottle embryo bottom molding gap 13 when the mold is closed; the bottle embryo bottom molding gap 13 is connected with the hanging ring molding gap 14.

[0024] In addition, the embryo body mold 40 is arranged above the embryo body bottom mold, and the embryo body mold 40 can move along the height direction of the body 10; the embryo body bottom mold is provided with an embryo body injection cavity. The embryo body injection cavity is used for the injection core 20 to extend into and cooperate with the middle end outer wall of the injection core 20 to form an embryo body molding gap 12 when the mold is closed, and the embryo body molding gap 12 is connected with the bottle embryo bottom molding gap 13. An elastic component 70 is sandwiched between the lower end surface of the embryo body mold 40 and the body 10, and the elastic component 70 is used to provide elastic stress to make the embryo body mold 40 move upward. Both sides of the lower end of the embryo body mold 40 are provided with inclined guide pillars 41, which are used to be inserted into the guide hole when the mold is closed to guide the two bottom mold plates 50 to approach each other.

[0025] On the basis of the above structure, when the preform mold of the hanging ring integrated infusion bottle of the present invention is used, the injection core 20, the mouth mold 30, the preform body mold 40, the preform body bottom mold and the hanging ring bottom mold 60 can be arranged from top to bottom. When the mold is closed, the injection core 20 can be moved downward along the height direction of the machine body 10, and the mouth mold 30 can be moved downward to press on the upper end surface of the preform body mold 40, and drive the preform body mold 40 to move downward. During the downward movement of the preform body mold 40, the inclined guide column 41 at the lower end of the preform body mold 40 can be correspondingly inserted into the guide holes of the two bottom mold plates 50. In the continuous downward process, the two bottom mold plates 50 are driven along the machine body. 10 are close to each other in the width direction, and the injection core 20 can pass through the mouth mold 30, the embryo body injection cavity of the embryo body mold 40 and the embryo body bottom mold in sequence, so that the inner wall of the mouth mold 30 can cooperate with the upper end outer wall of the injection core 20 to form a bottle preform mouth molding gap 11, the inner wall of the embryo body injection cavity and the middle end outer wall of the injection core 20 cooperate to form a embryo body molding gap 12, the inner walls of the two bottom mold plates 50 are correspondingly sleeved on the lower end of the injection core 20 and cooperate with the lower end outer wall of the injection core 20 to form a bottle preform bottom molding gap 13; the lower end surfaces of the two bottom mold plates 50 cooperate with the upper end surface of the hanging ring bottom mold 60 to form a hanging ring molding gap 14.

[0026] After that, plastic is injected into the ring forming gap 14, the preform bottom forming gap 13, the preform body forming gap 12 and the preform mouth forming gap 11 through the injection nozzle on the machine body 10, and the mold is locked and the mold is pressurized and cooled to quickly form the preform inside. Of course, the injection nozzle can be connected to the injection molding mechanism on the machine body 10.

[0027] Then, the mold opening operation is performed. When opening the mold, the core injection 20 and the mouth mold 30 can be moved upward at the same time. The upper end of the embryo body mold 40 is free from the pressure applied by the core injection 20 and the mouth mold 30. When the embryo body mold 40 moves upward under the action of the elastic component 70, the embryo body mold 40 can move upward for a distance along with the formed bottle preform. During this process, the inclined guide column 41 at the lower end of the embryo body mold 40 will first guide the two bottom mold plates 50 of the embryo body bottom mold to move away from each other, completing the mold opening of the bottom of the bottle preform. The embryo body of the bottle preform and the bottle mouth of the bottle preform have not yet separated from the corresponding embryo body mold 40 and the mouth mold 30. Therefore, the embryo body and the bottle mouth of the bottle preform can be cooled for the same time, so that the cooling effect of the whole bottle preform is more uniform.

[0028] The upward movement of the body mold 40 is affected by the elastic stress of the elastic component 70 , so after the two bottom mold plates 50 are opened, the body of the preform 40 no longer moves upward, and the core injection 20 and the mouth mold 30 can drive the body of the entire preform to be pulled out of the body mold 40 .

[0029] In addition, it should be noted that, in this embodiment, since the embryo body injection cavity for the injection core 20 to directly extend into is provided in the embryo body mold 40, the embryo body of the bottle preform can be directly formed, and the embryo bottom of the bottle preform can be formed by the two bottom mold plates 50 approaching each other and cooperating with the lower end of the injection core 20. In this way, the mold line of the bottle preform after forming only exists at the bottom of the bottle preform, which effectively shortens the length of the mold line on the embryo body of the bottle preform, so that the outer wall of the embryo body after forming is smoother.

[0030] Furthermore, the above-mentioned die 30 can be located above the embryo body mold 40. Specifically, the die 30 includes two die plates 30. Specifically, the two die plates 30 can move along the height direction of the body 10, and can approach or move away from each other along the width direction of the body 10. The inner walls of the two die plates 30 are mounted on the upper end of the injection core 20 when the mold is closed, and cooperate with the upper end outer wall of the injection core 20 to form the above-mentioned bottle embryo mouth molding gap 11. Since the bottle mouth generally has a structure such as a thread or a bayonet, the mouth die 30 can be formed by the cooperation of two mouth die 30 plates. In the preform molding stage, the two mouth die 30 plates can move downward at the same time and approach each other to complete the mold closing operation. However, after the preform is formed, the two mouth die 30 plates can be moved upward first. When the preform is opened, the bottle mouth of the preform will be stuck on the two mouth die 30 plates, so the body of the preform will move upward with the bottle mouth. After the injection core 20 is pulled out of the body of the preform, the preform will continue to move with the mouth die 30 to the next station for bottle blowing. After the bottle blowing is completed, the two mouth die 30 plates will move away from each other to complete the final mold opening operation of the mouth die 30.

[0031] Furthermore, in this embodiment, the body 10 is further provided with a die 30 driving mechanism, which is used to drive the two die 30 plates to move along the height direction of the body 10; and to drive the two die 30 plates to move closer to or farther from each other along the width direction of the body 10. Specifically, the die 30 driving mechanism can be implemented by using a driving oil cylinder or a pneumatic cylinder in the prior art, and the two die 30 plates can be driven to move up and down and left and right respectively by two driving oil cylinders or pneumatic cylinders, and the two die 30 plates can be driven to move up and down and left and right independently, which is convenient for the above-mentioned mold opening and mold closing.

[0032] Furthermore, two elastic components 70 are provided, and the two elastic components 70 are respectively arranged on both sides of the body 10 , so that the elastic stress provided by the elastic component 70 is relatively stable.

[0033] The elastic component 70 in this embodiment is preferably a spring. A mounting groove extending along the height direction of the body 10 is provided on the body 10, and one end of the spring is fixed in the mounting groove; the other end of the spring extends out of the mounting groove and is fixed to the lower end surface of the embryo body mold 40, so that the spring can be prevented from shaking during compression or resetting, and the force is more stable.

[0034] Furthermore, the body 10 is provided with a core injection 20 driving mechanism, which is used to drive the core injection 20 to move along the height direction of the body 10. The core injection 20 driving mechanism can also be implemented by a driving cylinder or a cylinder in the prior art, and the driving structure is relatively stable.

[0035] Furthermore, in this embodiment, the lower end surfaces of the two bottom mold plates 50 are both provided with first ring-forming grooves; the two first ring-forming grooves are connected when the mold is closed, and the corresponding second ring-forming groove is provided on the upper end surface of the ring bottom mold 60. The two first ring-forming grooves and the second ring-forming groove can cooperate to form the above-mentioned ring-forming gap 14 when the mold is closed, which is convenient for the ring-forming on the bottle embryo. Of course, it is also possible to set a groove on the upper end surface of the ring bottom mold 60 alone, and the lower end surface of the bottom mold plate 50 after the mold is closed can also form the above-mentioned ring-forming gap 14. On the contrary, setting a groove on the bottom mold plate 50 alone, and the upper end surface of the ring bottom mold 60 when the mold is closed can also form the above-mentioned ring gap, which can be selected according to actual conditions.

[0036] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A preform mold for an infusion bottle with an integrated hanging ring, characterized in that: It includes a machine body, an injection core that can move along the height direction of the machine body, a mouth mold, a preform body mold, a preform body bottom mold, and a hanging ring bottom mold fixed to the machine body; the mouth mold is used to cooperate with the upper end outer wall of the injection core to form a bottle preform mouth molding gap when the mold is closed; The embryo body bottom mold is arranged on the machine body and is located above the hanging ring bottom mold; the embryo body bottom mold includes two bottom mold plates, and the two bottom mold plates can move along the width direction of the machine body to approach or move away from each other; the bottom mold plates are provided with guide holes; the guide holes are gradually inclined outward from bottom to top; the lower end surface of the embryo body bottom mold is used to cooperate with the upper end surface of the hanging ring bottom mold to form a hanging ring molding gap when the mold is closed; the upper end surface of the embryo body bottom mold is used to cooperate with the lower end of the injection core to form a bottle embryo bottom molding gap when the mold is closed; the bottle embryo bottom molding gap is connected with the hanging ring molding gap; The embryo body mold is arranged on the machine body and is located above the embryo body bottom mold; the embryo body mold can move along the height direction of the machine body; the embryo body bottom mold is provided with an embryo body injection cavity; the embryo body injection cavity is used for the injection core to extend into and cooperate with the middle end outer wall of the injection core to form an embryo body molding gap when the mold is closed; the embryo body molding gap is connected with the bottle embryo bottom molding gap; an elastic component is sandwiched between the lower end surface of the embryo body mold and the machine body; the elastic component is used to provide elastic stress for the embryo body mold to move upward; inclined guide pillars are arranged on both sides of the lower end of the embryo body mold, and the inclined guide pillars are used to be inserted into the guide holes when the mold is closed to guide the two bottom mold plates to approach each other; The mouth mold is arranged on the machine body and located above the preform body mold, and the mouth mold includes two mouth mold plates; the two mouth mold plates can move along the height direction of the machine body and can approach or move away from each other along the width direction of the machine body; the inner walls of the two mouth mold plates are sleeved on the upper end of the injection core when the mold is closed and cooperate with the outer wall of the upper end of the injection core to form a bottle preform mouth molding gap; The lower end surfaces of the two bottom mold plates are each provided with a first hanging ring forming groove; the two first hanging ring forming grooves are connected when the mold is closed; the upper end surface of the hanging ring bottom mold is provided with a second hanging ring forming groove; the two first hanging ring forming grooves and the second hanging ring forming groove are used to cooperate to form the said hanging ring forming gap when the mold is closed.

2. The preform mold for the infusion bottle with integrated hanging ring according to claim 1, characterized in that: The machine body is also provided with a die driving mechanism, which is used to drive the two die plates to move along the height direction of the machine body; and to drive the two die plates to move closer to or farther away from each other along the width direction of the machine body.

3. The preform mold for the infusion bottle with integrated hanging ring according to claim 1, characterized in that: There are two elastic components, which are respectively arranged on two sides of the machine body.

4. The preform mold for the infusion bottle with integrated hanging ring according to claim 1 or 3, characterized in that: The elastic component is a spring, and a mounting groove extending along the height direction of the body is provided on the body; one end of the spring is fixed in the mounting groove; the other end of the spring extends out of the mounting groove and is fixed to the lower end surface of the embryo body mold.

5. The preform mold of the infusion bottle with integrated hanging ring according to claim 1, characterized in that: The machine body is also provided with a core injection driving mechanism, which is used to drive the core injection to move along the height direction of the machine body.

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