Movable mold device and bottle blank mold

Abstract

The utility model relates to the technical field of mold parts, provides a movable mold device and a bottle blank mold, and aims to solve the problem that when the set moving distance of an existing separation plate is too large, a sliding strip of the separation plate is easily damaged, and even the separation plate is damaged. Comprising a core plate; the separating plate is arranged on the core plate, and a first step is arranged on the side, away from the core plate, of the separating plate; one end of each safety pin penetrates through the separating plate and is arranged on the core plate, and the other end of each safety pin is provided with a second step; when the separating plate moves along the side deviating from the core plate, the second step is used for abutting against the first step on the separating plate so as to limit the moving distance of the separating plate to be within a safe range.

Description

Technical Field

[0001] The present application relates to the technical field of mold parts, and more specifically, to a movable mold device and a preform mold. Background Art

[0002] A preform mold typically consists of a core plate, a separator plate, and a cavity plate. The core and separator plates serve as the movable platen, while the cavity plate serves as the fixed platen. The movable platen is assembled with the fixed platen. The core rod assembly, mounted on the core plate, forms the preform's internal shape. The mouth die, mounted on the separator plate, forms the preform's mouth. After the preform's melt is injected into the mold cavity and cooled to set, the movable and fixed molds separate, leaving the preform on the movable side.

[0003] When the preform needs to be ejected from the mold, the separator plate, propelled by the ejector pin, moves forward, releasing the preform from the core pin. Simultaneously, the die retaining plate, driven by the slide rails, opens horizontally, allowing the mold to open. Normally, once the ejection distance is set, the separator plate will move forward the corresponding distance. However, if the ejection distance is incorrectly set (for example, too large), the separator plate may continue to move forward after reaching the correct position. This can cause the rollers on the separator plate's sliding bar to hit the slide rails, damaging the bar and, in severe cases, even the separator plate.

[0004] Therefore, the prior art needs to be improved. Utility Model Content

[0005] The purpose of the present application is to provide a movable mold device and a preform mold to solve the problem that when the moving distance of the existing separation plate is set too large, the sliding bar of the separation plate is easily damaged or even the separation plate is damaged.

[0006] To achieve the above objectives, the technical solution adopted in the first embodiment of the present application is:

[0007] A movable mold device, comprising:

[0008] core board;

[0009] a separation plate, which is arranged on the core plate, and a first step is provided on a side of the separation plate facing away from the core plate;

[0010] A plurality of safety pins, one end of which passes through the separation plate and is arranged on the core plate, and the other end of which is provided with a second step;

[0011] When the separator plate moves along the side away from the core plate, the second step is used to abut against the first step on the separator plate to limit the moving distance of the separator plate to a safe range.

[0012] According to the above movable mold device, the outer ring area of ​​the second step is larger than the inner ring area of ​​the first step.

[0013] According to the movable mold device described above, at least two safety pins are provided, and the two safety pins are respectively provided at the diagonal positions of the separation plate at its corners.

[0014] According to the movable mold device described above, the separation plate is provided with a notch accommodating groove at the first step, and the end of the safety pin facing away from the core plate is arranged in the notch accommodating groove.

[0015] According to the above-mentioned movable mold device, the movable mold device further includes a plurality of rows of mold cavity modules, each row of mold cavity modules has a plurality of mold cavities arranged in sequence, and the mold cavities are used to place bottle blanks;

[0016] Among them, each column of the mold cavity modules is provided with an electric eye emitter on one side and an electric eye receiver matching the electric eye emitter on the other side, so as to detect whether the molded bottle blank remains in the mold cavity.

[0017] According to the above-mentioned movable mold device, the height of the emitting end of the electric eye emitter is flush with the height of the receiving end of the electric eye receiver, and the two are just aligned with the bottle blank in the mold cavity.

[0018] According to the movable mold device described above, the movable mold device includes:

[0019] A plurality of first support seats, which are arranged on the core plate and used to support the corresponding electric eye emitters;

[0020] A plurality of second support seats are arranged on the core board and used for supporting the corresponding electric eye receivers.

[0021] According to the movable mold device described above, the movable mold device further includes:

[0022] A plurality of guide pillars, each of which passes through the separation plate and is disposed on the core plate;

[0023] A plurality of connecting members pass through the end surface of the core plate facing away from the separation plate and are arranged on the corresponding guide pillars.

[0024] According to the movable mold device described above, a pressure block is provided on the separation plate, and the movable mold device further comprises:

[0025] A mold counter is provided on one side of the core plate and is arranged corresponding to the pressing block;

[0026] When the mold is closed, the pressing block of the separation plate abuts against the mold counter to detect the number of times the mold is opened and closed.

[0027] The technical solution adopted in the second embodiment of the present application is:

[0028] A bottle preform mold comprises the movable mold device described above.

[0029] The beneficial effects of the movable mold device and preform mold provided by this application are at least:

[0030] The moving distance of the separation plate of the present application is the distance from the first step to the second step, which is the safety distance set by the present application. The present application sets a safety pin. If the moving distance of the separation plate exceeds the distance from the first step to the second step, the first step will abut against the second step, preventing the separation plate from continuing to move forward, thereby limiting the moving distance of the separation plate to a safe range, so as to prevent the sliding bar on the separation plate from being damaged or even the separation plate from being damaged when the separation plate is set to a distance that is too large. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 A schematic structural diagram of a movable mold device provided in an embodiment of the present application.

[0033] Figure 2 for Figure 1 Enlarged view of point B.

[0034] Figure 3 for Figure 1 Enlarged view of point C.

[0035] Figure 4 A schematic structural diagram of a movable mold device provided in an embodiment of the present application without a separation plate.

[0036] Figure 5 This is a partial exploded view of a movable mold device provided in an embodiment of the present application, with the separation plate removed.

[0037] Figure 6 This is a schematic diagram of the back structure of a core plate in a movable mold device provided in an embodiment of the present application.

[0038] Figure 7 for Figure 6 AA cross-section diagram.

[0039] Among them, the reference numerals in the figures are:

[0040] 1. Core plate; 2. Separation plate; 21. First step; 22. Notch receiving groove; 23. Press block; 3. Safety pin; 31. Second step; 4. Mold cavity module; 41. Mold cavity; 5. Bottle blank; 61. Electric eye emitter; 62. Electric eye receiver; 71. First support seat; 72. Second support seat; 81. Guide column; 82. Connector; 9. Mold counter. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0042] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be located directly or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on this technical solution. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0043] A preform mold typically consists of a core plate, a separator plate, and a cavity plate. The core and separator plates serve as the movable platen, while the cavity plate serves as the fixed platen. The movable platen is assembled with the fixed platen. The core rod assembly, mounted on the core plate, forms the preform's internal shape. The mouth die, mounted on the separator plate, forms the preform's mouth. After the preform's melt is injected into the mold cavity and cooled to set, the movable and fixed molds separate, leaving the preform on the movable side.

[0044] When the preform needs to be ejected from the mold, the separator plate, propelled by the ejector pin, moves forward, releasing the preform from the core pin. Simultaneously, the die retaining plate, driven by the slide rails, opens horizontally, allowing the mold to open. Normally, once the ejection distance is set, the separator plate will move forward the corresponding distance. However, if the ejection distance is incorrectly set (for example, too large), the separator plate may continue to move forward after reaching the correct position. This can cause the rollers on the separator plate's sliding bar to hit the slide rails, damaging the bar and, in severe cases, even the separator plate.

[0045] For this purpose, see Figure 1 and Figure 3 , a first aspect of an embodiment of the present application provides a movable mold device, which includes a core plate 1, a separation plate 2 and a plurality of safety pins 3, the separation plate 2 is arranged on the core plate 1, and a first step 21 is provided on the side of the separation plate 2 away from the core plate 1, one end of the plurality of safety pins 3 passes through the separation plate 2 and is arranged on the core plate 1, and the other end is provided with a second step 31, when the separation plate 2 moves along the side away from the core plate 1, the second step 31 is used to offset the first step 21 on the separation plate 2 to limit the moving distance of the separation plate 2 within a safe range.

[0046] It can be foreseen that the moving distance of the separation plate 2 is the distance from the first step 21 to the second step 31, which is the safety distance set in this embodiment. In this embodiment, a safety pin 3 is set. If the moving distance of the separation plate 2 exceeds the distance from the first step 21 to the second step 31, the first step 21 will abut against the second step 31, preventing the separation plate 2 from continuing to move forward, thereby limiting the moving distance of the separation plate 2 to a safe range, so as to prevent the sliding bar on the separation plate 2 from being damaged or even the separation plate 2 from being damaged when the set distance of the separation plate 2 is too large.

[0047] Optional, see Figure 1 and Figure 3 In one embodiment, the outer ring area of ​​the second step 31 is larger than the inner ring area of ​​the first step 21. Through this arrangement, this embodiment can ensure that when the separation plate 2 drives the first step 21 to move, the first step 21 can negotiate with the second step 31, so that the second step 31 can offset the first step 21 of the separation plate 2, thereby limiting the movement distance of the separation plate 2 to a safe range.

[0048] Optional, see Figure 4 and Figure 5 In one embodiment, at least two safety pins 3 are provided, and the two safety pins 3 are respectively provided at the diagonal positions of the corners of the separation plate 2. In this embodiment, by providing at least two safety pins 3 and providing the safety pins 3 at the diagonal positions of the corners of the separation plate 2, the moving direction of the separation plate 2 can be limited, so that the separation plate 2 can move stably in a fixed direction.

[0049] Among them, see Figure 4 and Figure 5 The number of the safety pins 3 is four, and the four safety pins are respectively arranged at the corners of the separation plate 2 .

[0050] Optional, see Figure 3In one embodiment, the separation plate 2 is provided with a notch accommodating groove 22 at the first step 21 , and the end of the safety pin 3 facing away from the core plate 1 is arranged in the notch accommodating groove 22 .

[0051] Since the preform production is highly automated, the machine can produce continuously and stably after it is started. In order to detect whether the preform 5 is demoulded normally, it is necessary to prevent the preform 5 from remaining in the mold cavity 41 during demoulding and causing problems with the mold closing.

[0052] Optional, see Figure 4 and Figure 5 In one embodiment, the movable mold assembly further includes multiple rows of mold cavity modules 4. Each row of mold cavity modules 4 includes multiple sequentially arranged mold cavities 41 for accommodating preforms 5. Each row of mold cavity modules 4 is provided with an electric eye emitter 61 on one side and an electric eye receiver 62 matching the electric eye emitter 61 on the other side. The electric eye emitter 61 and the electric eye receiver 62 are conventional and are not limited in this embodiment.

[0053] It can be foreseen that, in this embodiment, by arranging corresponding electric eye emitters 61 and electric eye receivers 62 on both sides of each column of mold cavity modules 4, when the bottle blank 5 is not demolded normally, the electric eye detection component will detect whether the molded bottle blank 5 remains in the mold cavity 41. When the molded bottle blank 5 remains in the mold cavity 41, an alarm will be triggered to prevent the machine from closing the mold, thereby preventing the bottle blank 5 from being pressed in the mold cavity 41 and causing damage to the mold.

[0054] For further information, see Figure 5 In one embodiment, the movable mold device includes several first support seats 71 and second support seats 72. The first support seats 71 correspond one-to-one to the electric eye emitter 61 and are arranged on the core plate 1. The electric eye emitter 61 is arranged on the corresponding first support seat 71. The second support seat 72 corresponds one-to-one to the electric eye receiver 62 and is arranged on the core plate 1. The electric eye receiver 62 is arranged on the corresponding second support seat 72. This embodiment supports the corresponding electric eye emitter 61 and electric eye receiver 62 by setting the first support seat 71 and the second support seat 72.

[0055] Optional, see Figure 4 and Figure 5 In one embodiment, the height of the emitting end of the electric eye emitter 61 is flush with the height of the receiving end of the electric eye receiver 62, and the two are just aligned with the bottle blank 5 in the mold cavity 41. Through this setting, this embodiment can ensure the detection accuracy of the bottle blank 5 by the electric eye emitter 61 and the electric eye receiver 62.

[0056] Since the guide pin 81 is fixed on the core plate 1, and the mold is repeatedly opened and closed, in order to ensure the stability of the position of the guide pin 81 and prevent it from shifting with the sudden opening and closing of the mold, it is optional to refer to Figure 3 In one embodiment, the movable mold device further includes a plurality of guide pillars 81 and connecting members 82, one end of each of the guide pillars 81 passes through the separation plate 2 and is arranged on the core plate 1, and a plurality of the connecting members 82 passes through the end surface of the core plate 1 facing away from the separation plate 2 and is arranged on the guide pillars 81 corresponding thereto.

[0057] It can be foreseen that, compared with the connection piece 82 directly fixing the core plate 1 and the guide column 81 from the side end of the core plate 1 at the guide column 81, the method of this embodiment passing through the end face of the core plate 1 away from the separation plate 2 and being fixed on the guide column 81 obviously makes the connection between the guide column 81 and the core plate 1 more stable.

[0058] Among them, see Figure 6 and Figure 7 In one embodiment, the connecting member 82 may be a bolt.

[0059] Optional, see Figure 1 and Figure 2 In one embodiment, a pressure block 23 is provided on the separation plate 2, and the movable mold device further includes a mold counter 9. The mold counter 9 is provided on one side of the core plate 1 and corresponds to the pressure block 23. When the mold is closed, the pressure block 23 abuts against the mold counter 9 to detect the number of times the mold is opened and closed. This embodiment, through the cooperation between the pressure block 23 and the mold counter 9, can obtain the number of times the mold is opened and closed, providing a reference for the production department.

[0060] A second aspect of an embodiment of the present application provides a preform mold, comprising the movable mold device described above.

[0061] To sum up, the present application provides a movable mold device and a bottle blank 5 mold, which include a core plate 1, a separation plate 2 and several safety pins 3. The separation plate 2 is arranged on the core plate 1, and a first step 21 is provided on the side of the separation plate 2 away from the core plate 1. One end of several of the safety pins 3 passes through the separation plate 2 and is arranged on the core plate 1, and the other end is provided with a second step 31. When the separation plate 2 moves along the side away from the core plate 1, the second step 31 is used to offset the first step 21 on the separation plate 2 to limit the moving distance of the separation plate 2 within a safe range. It can be foreseen that the moving distance of the separation plate 2 is the distance from the first step 21 to the second step 31, which is the safety distance set by this application. This application sets a safety pin 3. If the moving distance of the separation plate 2 exceeds the distance from the first step 21 to the second step 31, the first step 21 will abut against the second step 31, preventing the separation plate 2 from continuing to move forward, thereby limiting the moving distance of the separation plate 2 to a safe range to prevent the sliding bar on the separation plate 2 from being damaged or even the separation plate 2 from being damaged when the set distance of the separation plate 2 is too large.

[0062] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A movable mold device, characterized in that: include: core board; a separation plate, which is arranged on the core plate, and a first step is provided on a side of the separation plate facing away from the core plate; A plurality of safety pins, one end of which passes through the separation plate and is arranged on the core plate, and the other end of which is provided with a second step; When the separator plate moves along the side away from the core plate, the second step is used to abut against the first step on the separator plate to limit the moving distance of the separator plate to a safe range.

2. The movable mold device according to claim 1, characterized in that: The outer ring area of ​​the second step is larger than the inner ring area of ​​the first step.

3. The movable mold device according to claim 1, characterized in that: At least two safety pins are provided, and the two safety pins are respectively provided at the diagonal positions of the separation plate at its corners.

4. The movable mold device according to claim 1, characterized in that The separation plate is provided with a notch accommodating groove at the first step, and one end of the safety pin facing away from the core plate is arranged in the notch accommodating groove.

5. The movable mold device according to claim 1, characterized in that: The movable mold device further comprises a plurality of rows of mold cavity modules, each row of mold cavity modules having a plurality of mold cavities arranged in sequence, and the mold cavities are used to place bottle blanks; Among them, each column of the mold cavity modules is provided with an electric eye emitter on one side and an electric eye receiver matching the electric eye emitter on the other side, so as to detect whether the molded bottle blank remains in the mold cavity.

6. The movable mold device according to claim 5, characterized in that: The height of the emitting end of the electric eye emitter is flush with the height of the receiving end of the electric eye receiver, and the two are just aligned with the bottle blank in the mold cavity.

7. The movable mold device according to claim 5, characterized in that: The movable mold device comprises: A plurality of first support seats, which are arranged on the core plate and used to support the corresponding electric eye emitters; A plurality of second support seats are arranged on the core board and used for supporting the corresponding electric eye receivers.

8. The movable mold device according to claim 1, characterized in that: The movable mold device also includes: A plurality of guide pillars, each of which passes through the separation plate and is disposed on the core plate; A plurality of connecting members pass through the end surface of the core plate facing away from the separation plate and are arranged on the corresponding guide pillars.

9. The movable mold device according to claim 5, characterized in that: The separation plate is provided with a pressure block, and the movable mold device further comprises: A mold counter is provided on one side of the core plate and is arranged corresponding to the pressing block; When the mold is closed, the pressing block of the separation plate abuts against the mold counter to detect the number of times the mold is opened and closed.

10. A preform mold, characterized in that: It comprises a movable mold device as described in any one of claims 1 to 9.

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