Quick mold changing mechanism for plastic bottle blowing mold

Abstract

The utility model relates to the technical field of blowing molds, in particular to a plastic bottle blowing mold quick mold changing mechanism which comprises a mold seat and a hydraulic rod, one side of the hydraulic rod is fixedly connected with an installation assembly, a mold assembly is installed on the inner side of the installation assembly, the installation assembly comprises an installation seat, and a dovetail groove and a guide rail groove are formed in the inner side of the installation seat. The mold assembly comprises an external connection frame, a dovetail block is fixedly connected to one side of the external connection frame, an insertion hole is formed in the inner side of the external connection frame, a mold body is fixedly connected to one side of the external connection frame, and a sliding barrel is fixedly connected to the inner side of the mold body. According to the utility model, through the design of quickly replacing the mold, the mold replacement time is obviously reduced, and the mold interface is ensured to be accurately aligned without complicated debugging, so that the mounting efficiency is improved, and the quality of a blow-molded finished product is ensured at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to blow mould technology field, concretely is a kind of plastic bottle blow mould quick die changing mechanism. BACKGROUND

[0002] Plastic bottle blow mould is used to blow molding process in the manufacture of plastic bottle special mould, usually by two half moulds are formed, by closing a cavity, for accommodating heated softening plastic parison, in the blowing process, parison expands in the mould, and the inner wall of mould is shaped as the required plastic bottle shape, the design and manufacturing precision of blow mould directly affect the dimensional accuracy of plastic bottle, wall thickness uniformity and appearance quality, widely used in food and beverage packaging, daily chemical container and other fields;

[0003] Plastic bottle blow mould will be gradually worn out due to high temperature, high pressure and mechanical friction in long-term use, for example, the forming surface of mould can appear scratch, depression or deformation, leading to the surface quality of formed plastic bottle to decline, such as appearing burr, material defect or size inconsistency etc., therefore, plastic mould needs to be replaced;

[0004] In prior art, the manufacturing precision of mould is extremely high when plastic bottle is blow molded, especially for the plastic bottle product with complex shape, the manufacturing cost of mould will greatly increase, when replacing mould, it is necessary to ensure the accurate positioning between moulds, and this debugging process is often time-consuming, thereby leading to the increase of equipment downtime, and further affecting overall production efficiency, therefore, aiming at the above problems, a plastic bottle blow mould quick die changing mechanism is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of plastic bottle blow mould quick die changing mechanism, to solve the problem that when replacing mould, it is necessary to ensure the accurate positioning between moulds, this debugging process is often time-consuming, thereby leading to the increase of equipment downtime, and further affecting overall production efficiency.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of plastic bottle blow mould quick die changing mechanism, including mould seat and hydraulic rod, one side of the hydraulic rod is fixedly connected with installation component, the inside of installation component is equipped with mould component, and the installation component includes mounting seat, dovetail groove and guide rail slot are arranged in the inside of mounting seat, one side of mounting seat is fixedly connected with spring, the end of spring away from mounting seat is fixedly connected with pull plate, the inside of pull plate is fixedly connected with plug rod, and the mould component includes outer connection frame, one side of outer connection frame is fixedly connected with dovetail block, plug hole is arranged in the inside of outer connection frame, one side of outer connection frame is fixedly connected with mould body, the inside of mould body is fixedly connected with sliding cylinder, double slide column is slidably connected in the inside of sliding cylinder, the inside of dovetail groove is slidably connected with dovetail block, and the inside of plug hole is plugged with plug rod.

[0008] As the further optimization of the utility model, a plurality of sliding holes are formed in the inside of the mould seat, and a guide rod is slidably connected to the inside of the mould seat.

[0009] As the further optimization of the utility model, one side of the guide rod is fixedly connected to one side of the mounting seat, the piston rod of the hydraulic rod is fixedly connected to one side of the mounting seat, and the hydraulic rod is located at the lower end of the pull plate.

[0010] As the further optimization of the utility model, the dovetail groove penetrates one end of the mounting seat, the number of the dovetail groove is the same as the number of the dovetail block, and one side of the mounting seat is in close contact with the side of the outer connection frame close to the dovetail block.

[0011] As the further optimization of the utility model, the guide rail slot penetrates the inside of the mounting seat left and right, the rail strip is fixedly connected to the front end and the rear end of the plug rod, the end of the plug rod close to the plug hole is provided with a slope, and the slope part of the plug rod is located in the inside of the guide rail slot.

[0012] As the further optimization of the utility model, the two ends of the plug rod extend out of the outside of the mounting seat, a spacing is provided between the pull plate and the mounting seat, and the diameter of the pull plate is greater than the diameter of the guide rail slot.

[0013] As the further optimization of the utility model, the number of the outer connection frame is two, the inside of the left end of the outer connection frame is fixedly connected to the outside of the double slide column, the shape of the double slide column is two end cylinders, and a groove with the shape of two end cylinders is formed in the inside of the sliding cylinder.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model discloses a mounting assembly and mould assembly are set up through, the device has reduced mould replacement time remarkably, has reduced the equipment downtime caused by mould replacement effectively, thereby has improved overall production efficiency greatly, simultaneously, the device has realized the accurate alignment of mould interface in the design skillfully, does not need complicated debugging process, improves the installation efficiency further, ensures the quality stability of blow moulded finished product, in addition, the simplification of mould replacement process has reduced the complexity and error probability of manual operation, reduced the labour intensity, improved the security and reliability of production process. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is whole structure schematic diagram of the utility model;

[0017] Figure 2 It is mould seat structure schematic diagram of the utility model;

[0018] Figure 3 It is the cut open structure schematic diagram of the utility model external rack;

[0019] Figure 4 It is the cut open structure schematic diagram of the utility model mounting seat;

[0020] Figure 5 It is dovetail block structure schematic diagram of the utility model;

[0021] Figure 6 It is the cut open structure schematic diagram of the utility model sliding cylinder;

[0022] Figure 7 It is double slide column structure schematic diagram of the utility model.

[0023] In the drawing: 1, mould seat;2, hydraulic rod;3, guide rod;

[0024] 4, mounting assembly;41, mounting seat;42, dovetail groove;43, guide rail slot;44, spring;45, pull plate;46, plug rod;

[0025] 5, mould assembly;51, external rack;52, dovetail block;53, jack;54, mould body;55, sliding cylinder;56, double slide column. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model.

[0027] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0028] Referring to Figures 1-7 The utility model provides a technical scheme:

[0029] A plastic bottle blow mould quick die changing mechanism, including mould base 1 and hydraulic rod 2, one side of hydraulic rod 2 is fixedly connected with installation assembly 4, and installation assembly 4 inside is installed with mould assembly 5, and installation assembly 4 includes mounting seat 41, and the inside of mounting seat 41 is provided with dovetail groove 42 and guide rail slot 43, and one side of mounting seat 41 is fixedly connected with spring 44, and the end away from mounting seat 41 of spring 44 is fixedly connected with pull plate 45, and pull plate 45 inside is fixedly connected with plug rod 46, and mould assembly 5 includes external connection frame 51, and one side of external connection frame 51 is fixedly connected with dovetail block 52, and the inside of external connection frame 51 is provided with plug hole 53, and one side of external connection frame 51 is fixedly connected with mould body 54, and the inside of mould body 54 is fixedly connected with sliding cylinder 55, and the inside of sliding cylinder 55 is slidably connected with double slide column 56, and dovetail block 52 slides in the inside of dovetail groove 42, and plug rod 46 is inserted in the inside of plug hole 53.

[0030] As a further embodiment of the present scheme, a plurality of sliding holes are formed in the inside of the mould base 1, and a guide rod 3 is slidably connected to the inside of the mould base 1, and the piston rod of the hydraulic rod 2 slides in the sliding hole of the mould base 1, and one side of the guide rod 3 is fixedly connected to one side of the mounting seat 41, and the piston rod of the hydraulic rod 2 is fixedly connected to one side of the mounting seat 41, and the hydraulic rod 2 is located at the lower end of the pull plate 45, by the above setting, the mounting seat 41 can be moved after the hydraulic rod 2 is started, and the stability of the mounting seat 41 during movement can be improved by the guide rod 3, so that the two mould bodies 54 are combined together;

[0031] As a further embodiment of the present scheme, the dovetail groove 42 penetrates one end of the mounting seat 41, and the number of the dovetail groove 42 is the same as the number of the dovetail block 52, and one side of the mounting seat 41 is in close contact with the side of the external connection frame 51 close to the dovetail block 52, by the above setting, the design of the dovetail block 52 and the dovetail block 52 can improve the installation speed of the mould assembly 5, and can prevent the mounting seat 41 from being separated from the dovetail block 52 left and right;

[0032] As a further implementation of the present scheme, the guide rail groove 43 is arranged on the inner side of the mounting seat 41, and the front end and the rear end of the plug rod 46 are fixedly connected with rail strips. The end of the plug rod 46 close to the plug hole 53 is provided with a slope, and the slope of the plug rod 46 is arranged inside the guide rail groove 43. Through the above arrangement, the plug rod 46 is prevented from being twisted inside the guide rail groove 43, and the slope of the plug rod 46 is ensured to face the same direction. The plug rod 46 is partially embedded inside the guide rail groove 43, and the plug rod 46 is prevented from being forced to move by extrusion after the external rack 51 contacts the plug rod 46.

[0033] As a further implementation of the present scheme, the two ends of the plug rod 46 extend outside the mounting seat 41, and a spacing is arranged between the pull plate 45 and the mounting seat 41. The diameter of the pull plate 45 is greater than the diameter of the guide rail groove 43. Through the above arrangement, the plug rod 46 can be moved by pulling the pull plate 45, and a reasonable disassembly method is provided.

[0034] As a further implementation of the present scheme, the number of external racks 51 is two, and the inner side of the left external rack 51 is fixedly connected with the outer side of the double slide column 56. The shape of the double slide column 56 is a cylindrical body at both ends, and the inner side of the sliding cylinder 55 is provided with a groove in the shape of a cylindrical body at both ends. Through the above arrangement, the precise alignment of the mold interface is realized, and the complex debugging process is not required, which greatly improves the installation efficiency and ensures the quality of the blow molding product.

[0035] Work flow: when the mold is quickly replaced, the plurality of dovetail blocks 52 are respectively aligned with the corresponding dovetail grooves 42, and the mold assembly 5 is pressed downward as a whole. During the process of pressing the mold assembly 5 downward as a whole, when the bottom end of the external rack 51 contacts the slope of the plug rod 46, the plug rod 46 moves under the extrusion of the external rack 51. At this time, the slope of the plug rod 46 is accommodated inside the guide rail groove 43, the plug rod 46 drives the pull plate 45 to move, and the pull plate 45 drives the spring 44 to elastically stretch. When the bottom end of the external rack 51 is tightly attached to the lower end of the mold seat 1, the plug hole 53 is aligned with the plug rod 46 at this time. Under the action of the elasticity of the spring 44, the plug rod 46 slides into the inside of the plug hole 53, and the installation is completed at this time. When disassembling, pull the two pull plates 45 to move the plug rod 46 out of the inside of the plug hole 53, and the mold assembly 5 can be taken out as a whole. The two guide rods 3 are started to drive the mounting seat 41 to move, the mounting seat 41 drives the hydraulic rod 2 to move, and the mounting seat 41 drives the corresponding external rack 51 to move, so that the mold body 54 is close to the external rack 51. The blow molding machine is inserted into the groove at the front end of the mold body 54 to realize the blow molding work. Through the above principle, the device is convenient and fast when the mold is replaced, and the working time wasted by replacing the mold is reduced.

[0036] To ensure the interface alignment between the replacement molds, the mold assembly 5 is divided into an upper mold and a lower mold, the upper mold and the lower mold are two mold bodies 54 respectively, the two mold bodies 54 are connected through sliding between a double slide column 56 and a slide cylinder 55, under the limiting action between the plurality of slide cylinders 55 and the double slide column 56, the mold groove of the mold body 54 can always keep the state of alignment, so when the mold assembly 5 is replaced, the alignment precision between the mold body 54 and the mold body 54 does not need to be debugged, the installation efficiency is greatly improved, and meanwhile the quality of the blow molding finished product can be ensured.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A quick mold changing mechanism for plastic bottle blow molding mold, comprising a mold base (1) and a hydraulic rod (2), characterized in that: The hydraulic rod (2) is fixedly connected with a mounting assembly (4) on one side, and a mold assembly (5) is arranged in the mounting assembly (4); The mounting assembly (4) comprises a mounting seat (41), dovetail grooves (42) and guide rail grooves (43) are formed in the inner side of the mounting seat (41), a spring (44) is fixedly connected to one side of the mounting seat (41), a pull plate (45) is fixedly connected to the end of the spring (44) away from the mounting seat (41), and a plug rod (46) is fixedly connected to the inner side of the pull plate (45). The mold assembly (5) comprises an external connecting frame (51), a dovetail block (52) is fixedly connected to one side of the external connecting frame (51), a plug hole (53) is formed in the inner side of the external connecting frame (51), a mold body (54) is fixedly connected to one side of the external connecting frame (51), a sliding cylinder (55) is fixedly connected to the inner side of the mold body (54), and double sliding columns (56) are slidingly connected to the inner side of the sliding cylinder (55). The dovetail block (52) slides in the inner side of the dovetail groove (42), and the plug rod (46) is inserted into the plug hole (53).

2. The quick mold change mechanism for plastic bottle blow molding mold according to claim 1, characterized in that: A plurality of sliding holes are formed in the inner side of the mold seat (1), a guide rod (3) is slidingly connected to the inner side of the mold seat (1), and the piston rod of the hydraulic rod (2) slides in the sliding hole in the inner side of the mold seat (1).

3. A quick mold change mechanism for a plastic bottle blow mold according to claim 2, characterized in that: One side of the guide rod (3) is fixedly connected to one side of the mounting seat (41), the piston rod of the hydraulic rod (2) is fixedly connected to one side of the mounting seat (41), and the hydraulic rod (2) is located at the lower end of the pull plate (45).

4. The quick mold change mechanism for plastic bottle blow mold according to claim 1, characterized in that: The dovetail groove (42) penetrates one end of the mounting seat (41), the number of the dovetail grooves (42) is the same as that of the dovetail blocks (52), and one side of the mounting seat (41) is in close contact with the side of the external connecting frame (51) close to the dovetail block (52).

5. The quick change mechanism for plastic bottle blow mold according to claim 1, wherein: The guide rail grooves (43) penetrate the inner side of the mounting seat (41) left and right, the rail strips are fixedly connected to the front end and the rear end of the plug rod (46), the end of the plug rod (46) close to the plug hole (53) is provided with a slope, and the slope of the plug rod (46) is arranged in the inner side of the guide rail groove (43).

6. A quick change mechanism for a plastic bottle blow mold according to claim 1, wherein: Both ends of the plug rod (46) extend out of the outer side of the mounting seat (41), a spacing is arranged between the pull plate (45) and the mounting seat (41), and the diameter of the pull plate (45) is greater than that of the guide rail groove (43).

7. A quick change mechanism for a plastic bottle blow mold according to claim 1, wherein: The number of the external connecting frames (51) is two, the inner side of the left external connecting frame (51) is fixedly connected to the outer side of the double sliding columns (56), the double sliding columns (56) are in the shape of two cylindrical bodies, and a groove in the shape of two cylindrical bodies is formed in the inner side of the sliding cylinder (55).

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