Blowing mold

Abstract

The utility model relates to blow molding equipment, in particular to a blow molding mold which comprises two blow molding half molds, a convex bottom mold assembly, a jacking mechanism and a guide assembly, the parting surfaces of the two blow molding half molds abut against each other to form a plurality of cavities, and a containing space is further formed between the two blow molding half molds and located below the parting surfaces; the convex bottom die assembly comprises a plurality of convex bottom dies and a first fixing plate; the first fixing plate is arranged in the containing space in a liftable mode, and the convex bottom dies are arranged on the top face of the first fixing plate. The jacking mechanism is connected with the first fixing plate and located below the first fixing plate. The guide assembly comprises a guide piece with a guide groove and a guide block, and the guide block is arranged in the guide groove and can slide up and down relative to the guide groove. According to the utility model, the guide groove of the guide piece is accurately matched with the guide block, so that the possible deviation and blockage in the mold opening and closing process are effectively reduced, and the operation smoothness is ensured.

Description

Technical Field

[0001] The utility model relates to blow molding equipment, in particular to a blow molding mold. Background Art

[0002] The rotary conveying type blow molding machine includes an injection molding process, a temperature adjustment process, a blow molding process and a removal process. In the rotary conveying type blow molding machine, in each area that divides the 360° conveying area into four parts, there are injection molding stations, temperature adjustment stations, blow molding stations and removal stations. In each station, there are four transfer plates that are intermittently rotated and transported. The transfer plates are intermittently transported to the injection molding station, the temperature adjustment station, the blow molding station and the removal station in sequence. The blow molding station arranged downstream of the temperature adjustment station in the conveying direction has two rows of blow molds. In the blow molding station, a plurality of preforms pre-blow molded are blow molded into a plurality of containers in the two rows of blow molds of the mold, and the blow mold has a pair of blow cavity combination molds and a convex bottom mold. The convex bottom mold in the related art is prone to uneven force and jamming when opening and closing the mold. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a blow mold, which not only provides a stable guide for the lifting and lowering of the first fixed plate, but also ensures the accurate alignment of the convex bottom mold and the cavity through the precise matching of the guide groove and the guide block of the guide member. This design effectively reduces the deviation and jamming that may occur during the opening and closing of the mold, thereby ensuring smooth operation.

[0004] The first aspect of the utility model is to provide a blow molding mold, comprising two blow molding half molds, a convex bottom mold assembly, a lifting mechanism and a guide assembly;

[0005] The parting surfaces of the two blow molding half molds are abutted against each other to form a plurality of cavities, and an accommodation space is also formed between the two blow molding half molds, and the accommodation space is located below the parting surface;

[0006] The convex bottom mold assembly includes a plurality of convex bottom molds and a first fixed plate. The number of the convex bottom molds is consistent with the number of the cavities and is located below the cavities. The first fixed plate is movably arranged in the accommodating space, and the plurality of convex bottom molds are arranged on the top surface of the first fixed plate.

[0007] The lifting mechanism is connected to the first fixing plate and is located below the first fixing plate, and the lifting mechanism is used to drive the first fixing plate to rise or fall, so that the plurality of convex bottom molds and the plurality of cavities can be molded or opened;

[0008] The guide assembly includes a guide member having a guide groove and a guide block, wherein the guide block is arranged in the guide groove and can slide up and down relative to the guide groove, one of the guide groove and the guide member is arranged on the first fixed plate, and the other is arranged on the blow molding half mold, and the guide groove extends in the up and down direction of the guide member.

[0009] In the first aspect of the utility model, as a preferred embodiment, the transverse cross-sectional shape of the guide groove of the guide member is dovetail-shaped, and correspondingly, the transverse cross-sectional shape of the guide block is dovetail-shaped.

[0010] In the first aspect of the utility model, as a preferred embodiment, the guide block is fixedly installed at the center position of the length direction of the first fixed plate by screws, and correspondingly, the guide piece is fixedly installed at the position corresponding to the guide block on the blow molding half mold by screws.

[0011] In the first aspect of the utility model, as a preferred embodiment, the jacking mechanism includes a second fixing plate, a plurality of hydraulic cylinders, two connecting members, two first locking members and two second locking members;

[0012] The second fixing plate is fixedly connected to the bottom surface of the first fixing plate through the two connecting members;

[0013] The telescopic rods of the plurality of hydraulic cylinders are respectively fixedly connected to the second fixing plate;

[0014] One end of each of the connecting members is fixedly connected to the first fixing plate via a first locking member, and the other end of each of the connecting members is fixedly connected to the second fixing plate via a second locking member.

[0015] In the first aspect of the utility model, as a preferred embodiment, the first locking member is an equal height screw, and a gap of a preset height is formed between the connecting member and the first fixing plate by adjusting the equal height screw.

[0016] In the first aspect of the utility model, as a preferred embodiment, the second locking member includes a connecting sleeve and two locking screws, one end of the connecting sleeve is fixedly connected to a side surface of the connecting member through one of the locking screws, and the other end of the connecting sleeve is fixedly connected to a side surface of the second fixing plate through one of the locking screws.

[0017] In the first aspect of the utility model, as a preferred embodiment, two opposite sides of the accommodating space are formed with a first opening to enable the first locking member and / or the second locking member to be adjusted from the side; and a second opening is formed on the bottom surface of the accommodating space to enable the telescopic rods of multiple hydraulic cylinders to pass through the second opening and be fixedly connected to the second fixing plate.

[0018] In the first aspect of the utility model, as a preferred embodiment, a plurality of limit blocks are symmetrically arranged on two opposite inner walls of the accommodating space, and the limit blocks are aligned with the first fixing plate and leave a preset distance when the mold is closed.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. Before the mold is closed, the two blow molding half molds of the utility model are abutted by the parting surface to form multiple cavities and accommodating spaces. The convex bottom mold assembly is located below the cavity, and the first fixed plate is driven up by the lifting mechanism to close the convex bottom mold with the cavity. After the plastic particles are heated and softened, they are injected into the mold. In the mold, high-pressure air is blown in to make the softened plastic evenly adhere to the inner wall of the mold cavity and fill the entire mold cavity. The plastic is quickly cooled and solidified in the mold to form the desired shape and size. As the plastic cools and solidifies, the first fixed plate is driven down by the lifting mechanism to drive the two blow molding half molds to separate, and the plastic product is separated from the mold cavity. In the process of opening and closing the mold, the precise matching of the guide groove and the guide block of the guide member not only provides a stable guide for the lifting and lowering of the first fixed plate, but also ensures the accurate alignment of the convex bottom mold with the cavity. This design effectively reduces the deviation and jamming that may occur during the process of opening and closing the mold, thereby ensuring the smoothness of the operation.

[0021] 2. The transverse cross-sectional shape of the guide groove of the guide member of the utility model is dovetail-shaped, and correspondingly, the transverse cross-sectional shape of the guide block is dovetail-shaped. This design is to ensure that the guide block can slide stably and accurately in the guide groove to provide a good guiding effect. The dovetail-shaped design can enhance the stability of the structure and prevent separation or shaking during use, thereby ensuring the accuracy and stability of mold closing and opening.

[0022] 3. In the utility model, the limit block is accurately placed at the appropriate position in the direction of the parting surface of the blow mold half. When the convex bottom mold assembly is molded with the blow mold half, the limit block will guide and limit the movement of the convex bottom mold assembly in the direction of the parting surface, thereby achieving centering. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view structural schematic diagram of the blow molding mold of the utility model;

[0024] Figure 2 It is a side view structural schematic diagram of the blow molding half mold of the utility model;

[0025] Figure 3 It is a schematic diagram of the top view of the blow molding half mold of the utility model;

[0026] Figure 4It is a cross-sectional structural diagram of the convex bottom mold assembly and the jacking mechanism of the utility model;

[0027] Figure 5 It is a side structural schematic diagram of the convex bottom mold assembly and the jacking mechanism of the utility model.

[0028] In the figure: 10, blow molding half mold; 11, cavity; 12, accommodating space; 20, convex bottom mold assembly; 21, convex bottom mold; 22, first fixed plate; 30, lifting mechanism; 31, second fixed plate; 32, hydraulic cylinder; 33, connecting piece; 34, first locking piece; 35, second locking piece; 351, connecting sleeve; 352, locking screw; 40, guide assembly; 41, guide piece; 411, guide groove; 42, guide block; 50, limit block. DETAILED DESCRIPTION

[0029] Below, in conjunction with the accompanying drawings and specific embodiments, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Please refer to Figure 1-5 As shown, this embodiment provides a blow molding mold, including two blow molding half molds 10, a convex bottom mold assembly 20, a lifting mechanism 30 and a guide assembly 40;

[0034] Specifically, the parting surfaces of the two blow molding half molds 10 abut against each other to form a plurality of cavities 11, and an accommodation space 12 is also formed between the two blow molding half molds 10, and the accommodation space 12 is located below the parting surface;

[0035] Specifically, the convex bottom mold assembly 20 includes a plurality of convex bottom molds 21 and a first fixed plate 22. The number of the convex bottom molds 21 is the same as the number of the cavities 11 and is located below the cavities 11. The first fixed plate 22 is movably disposed in the accommodating space 12, and the plurality of convex bottom molds 21 are all disposed on the top surface of the first fixed plate 22.

[0036] Specifically, the lifting mechanism 30 is connected to the first fixed plate 22 and is located below the first fixed plate 22. The lifting mechanism 30 is used to drive the first fixed plate 22 to rise or fall, so that the multiple convex bottom molds 21 and the multiple cavities 11 can be molded or opened;

[0037] Specifically, the guide assembly 40 includes a guide member 41 having a guide groove 411 and a guide block 42. The guide block 42 is arranged in the guide groove 411 and can slide up and down relative to the guide groove 411. One of the guide groove 411 and the guide member 41 is arranged on the first fixed plate 22, and the other is arranged on the blow molding half mold 10. The guide groove 411 extends in the up and down directions of the guide member 41.

[0038] On the basis of the above structure, before the mold is closed, the two blow mold halves 10 are abutted by the parting surface to form a plurality of cavities 11 and accommodating spaces 12. The convex bottom mold assembly 20 is located below the cavity 11, and the first fixed plate 22 is driven up by the lifting mechanism 30 to close the convex bottom mold 21 and the cavity 11. After being heated and softened, the plastic particles are injected into the mold. In the mold, high-pressure air is blown in to make the softened plastic evenly adhere to the inner wall of the mold cavity 11 and fill the entire mold cavity 11. The plastic is rapidly cooled and solidified in the mold to form the desired shape and size. As the plastic cools and solidifies, the first fixed plate 22 is driven down by the lifting mechanism 30 to drive the two blow mold halves 10 to separate, and the plastic product is separated from the mold cavity 11. In the process of opening and closing the mold, the precise matching of the guide groove 411 and the guide block 42 of the guide member 41 not only provides a stable guide for the lifting and lowering of the first fixed plate 22, but also ensures the accurate alignment of the convex bottom mold 21 and the cavity 11. This design effectively reduces the deviation and jamming that may occur during the mold opening and closing process, thereby ensuring smooth operation.

[0039] In a preferred embodiment of the utility model, the transverse cross-sectional shape of the guide groove 411 of the guide member 41 is dovetail-shaped, and correspondingly, the transverse cross-sectional shape of the guide block 42 is dovetail-shaped. This design ensures that the guide block 42 can slide stably and accurately in the guide groove 411 to provide a good guiding effect. The dovetail-shaped design can enhance the stability of the structure and prevent separation or shaking during use, thereby ensuring the accuracy and stability of mold closing and opening.

[0040] In a preferred embodiment of the present invention, the guide block 42 is fixedly mounted at the center position of the length direction of the first fixed plate 22 by screws, and correspondingly, the guide member 41 is fixedly mounted at the position corresponding to the guide block 42 on the blow mold half 10 by screws.

[0041] On the basis of the above structure, the convex bottom mold 21 is mounted on the first fixed plate 22, and the first fixed plate 22 is centered in the arrangement direction of the blow mold half 10 through the cooperation of the guide block 42 and the guide member 41. When the lifting mechanism 30 drives the first fixed plate 22 to rise or fall, the guide block 42 slides in the guide groove 411, ensuring the stability and centering of the convex bottom mold assembly 20 during the movement.

[0042] In a preferred embodiment of the present utility model, the lifting mechanism 30 includes a second fixing plate 31, a plurality of hydraulic cylinders 32, two connecting members 33, two first locking members 34 and two second locking members 35;

[0043] The second fixing plate 31 is fixedly connected to the bottom surface of the first fixing plate 22 through two connecting members 33;

[0044] The telescopic rods of the plurality of hydraulic cylinders 32 are respectively fixedly connected to the second fixing plate 31;

[0045] One end of each connecting member 33 is fixedly connected to the first fixing plate 22 via a first locking member 34 , and the other end of each connecting member 33 is fixedly connected to the second fixing plate 31 via a second locking member 35 .

[0046] On the basis of the above structure, when the hydraulic cylinder 32 is working, its telescopic rod will drive the second fixed plate 31 to move up and down. Since the second fixed plate 31 is tightly connected to the first fixed plate 22 through the connecting piece 33, the first fixed plate 22 and the convex bottom mold 21 thereon will also move up and down accordingly. In this way, the lifting mechanism 30 can accurately control the height position of the convex bottom mold 21, thereby realizing accurate mold closing and mold opening operations with the blow mold half 10.

[0047] In a preferred embodiment of the present invention, the first locking member 34 is a height-adjusting screw, and a gap of a preset height is formed between the connecting member 33 and the first fixing plate 22 by adjusting the height-adjusting screw.

[0048] On the basis of the above structure, by adjusting the equal height screws, the distance between the connecting member 33 and the first fixing plate 22 can be accurately adjusted to form a gap of a preset height. The preset height of this gap is crucial to ensure the accuracy and stability of the mold. By adjusting the gap, errors in the manufacturing and assembly process can be eliminated, ensuring that the lifting mechanism 30 can move smoothly and accurately during the lifting process. An appropriate gap can also avoid direct friction between the connecting member 33 and the first fixing plate 22, thereby reducing wear and extending the service life of the mold.

[0049] In a preferred embodiment of the present invention, the second locking member 35 includes a connecting sleeve 351 and two locking screws 352, one end of the connecting sleeve 351 is fixedly connected to a side surface of the connecting member 33 through a locking screw 352, and the other end thereof is fixedly connected to a side surface of the second fixing plate 31 through a locking screw 352.

[0050] On the basis of the above structure, through this design, the second locking member 35 can effectively connect the connecting member 33, the second fixing plate 31 and the entire lifting mechanism 30 into a whole, thereby improving the rigidity and stability of the entire mechanism. During the lifting and lowering movement of the mold, this stable connection ensures the accuracy and reliability of the movement, reduces the error caused by looseness or misalignment, and thus helps to improve the quality of the product and production efficiency.

[0051] In a preferred embodiment of the utility model, a first opening is formed on two opposite sides of the accommodating space 12 to enable the first locking member 34 and / or the second locking member 35 to be adjusted from the side; a second opening is formed on the bottom surface of the accommodating space 12 to enable the telescopic rods of the multiple hydraulic cylinders 32 to pass through the second opening and be fixedly connected to the second fixing plate 31.

[0052] Based on the above structure, through the first opening, the operator can easily access and adjust the locking member to ensure the accuracy and stability of the mold, and also facilitate daily maintenance and overhaul work. Through the second opening, it is ensured that the hydraulic cylinder 32 can smoothly and accurately drive the lifting mechanism 30 and the raised bottom mold assembly 20 to perform lifting and lowering movements, and also provides convenience for the installation and maintenance of the hydraulic cylinder 32.

[0053] In a preferred embodiment of the present invention, a plurality of limit blocks 50 are symmetrically arranged on two opposite inner walls of the accommodating space 12 , and the limit blocks are aligned with the first fixing plate 22 and a preset distance is left when the mold is closed.

[0054] Based on the above structure, the stopper 50 is precisely placed at an appropriate position in the direction of the parting surface of the blow mold half 10. When the convex bottom mold assembly 20 is molded with the blow mold half 10, the stopper 50 guides and limits the movement of the convex bottom mold assembly 20 in the direction of the parting surface, thereby achieving centering.

[0055] Although only certain components and embodiments of the present application have been illustrated and described, many modifications and changes may be conceived by those skilled in the art without actually departing from the scope and spirit of the claims, such as changes in the size, dimensions, structure, shape and proportion of the various elements, mounting arrangements, material usage, color, orientation, etc.

[0056] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope 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 blow molding mold, characterized in that: It includes two blow molding half molds, a convex bottom mold assembly, a lifting mechanism and a guide assembly; The parting surfaces of the two blow molding half molds are abutted against each other to form a plurality of cavities, and an accommodation space is also formed between the two blow molding half molds, and the accommodation space is located below the parting surface; The convex bottom mold assembly includes a plurality of convex bottom molds and a first fixed plate. The number of the convex bottom molds is consistent with the number of the cavities and is located below the cavities. The first fixed plate is movably arranged in the accommodating space, and the plurality of convex bottom molds are arranged on the top surface of the first fixed plate. The lifting mechanism is connected to the first fixing plate and is located below the first fixing plate, and the lifting mechanism is used to drive the first fixing plate to rise or fall, so that the plurality of convex bottom molds and the plurality of cavities can be molded or opened; The guide assembly includes a guide member having a guide groove and a guide block, wherein the guide block is arranged in the guide groove and can slide up and down relative to the guide groove, one of the guide groove and the guide member is arranged on the first fixed plate, and the other is arranged on the blow molding half mold, and the guide groove extends in the up and down direction of the guide member.

2. The blow mold according to claim 1, characterized in that The transverse cross-sectional shape of the guide groove of the guide member is dovetail-shaped, and correspondingly, the transverse cross-sectional shape of the guide block is dovetail-shaped.

3. The blow mold according to claim 1, characterized in that The guide block is fixedly mounted at the center position of the length direction of the first fixing plate by screws, and correspondingly, the guide piece is fixedly mounted at the position corresponding to the guide block on the blow mold half by screws.

4. The blow mold according to claim 1, characterized in that The lifting mechanism includes a second fixing plate, a plurality of hydraulic cylinders, two connecting members, two first locking members and two second locking members; The second fixing plate is fixedly connected to the bottom surface of the first fixing plate through the two connecting members; The telescopic rods of the plurality of hydraulic cylinders are respectively fixedly connected to the second fixing plate; One end of each of the connecting members is fixedly connected to the first fixing plate via a first locking member, and the other end of each of the connecting members is fixedly connected to the second fixing plate via a second locking member.

5. The blow molding mold according to claim 4, characterized in that The first locking member is a height-adjusting screw, and a gap of a preset height is formed between the connecting member and the first fixing plate by adjusting the height-adjusting screw.

6. The blow mold according to claim 4, characterized in that The second locking member includes a connecting sleeve and two locking screws, one end of the connecting sleeve is fixedly connected to a side surface of the connecting member through one of the locking screws, and the other end of the connecting sleeve is fixedly connected to a side surface of the second fixing plate through one of the locking screws.

7. The blow molding mold according to claim 6, characterized in that A first opening is formed on two opposite sides of the accommodating space to enable the first locking member and / or the second locking member to be adjusted from the side; a second opening is formed on the bottom surface of the accommodating space to enable the telescopic rods of multiple hydraulic cylinders to pass through the second opening and be fixedly connected to the second fixing plate.

8. The blow molding mold according to claim 1, characterized in that A plurality of limit blocks are symmetrically arranged on two opposite inner walls of the accommodating space, and the limit blocks are aligned with the first fixing plate and a preset distance is left when the mold is closed.

Images