Double-rail blank insertion lifting mechanism of bottle blowing machine

Abstract

The utility model discloses a double-track blank insertion lifting mechanism of a bottle blowing machine, and relates to the technical field of bottle blowing machines. The double-track blank insertion lifting mechanism comprises a cam lifting track and a blank insertion device, an inner track and an outer track are arranged on the cam lifting track; the blank inserting device comprises a bearing support concentric with the sliding rail, a rotary support is installed on the bearing support, the upper side of the rotary support is connected with a main star wheel cylinder, and a lifting guide fork assembly A and a lifting guide fork assembly B which are matched with the inner rail and the outer rail respectively are arranged on the main star wheel cylinder. The inner track and the outer track are arranged, the two sets of lifting guide fork assemblies matched with the inner track and the outer track respectively are arranged at the ends of the main star wheel cylinder in a matched mode, on one hand, the number of the lifting guide assemblies can be reduced, the size of the star wheel cylinder is reduced, and cost is reduced, and on the other hand, bearing idler wheels matched with the track faces are enlarged. And meanwhile, the structural change is small, and the modifiability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of bottle blowing machines, in particular to a double-track embryo insertion lifting mechanism of a bottle blowing machine. Background Art

[0002] Before the blow molding machine blows the plastic preform into a large shape, a heating device is needed to heat the plastic preform. When the preform is transferred from the feeder (star wheel) to the heating machine, a preform insertion mechanism is needed to insert the preform insertion head into the preform to fix the position of the preform, drive the preform to move in the heating machine, and protect the mouth of the preform to prevent deformation due to heating.

[0003] For example, CN201913799U discloses a slide rail buffer mechanism for a heater of a bottle blowing machine, comprising a slide rail, a preform insertion device and a slide rail, the slide rail being connected to a small turntable, the preform slides into the small turntable through the slide rail, a large turntable is installed on one side of the small turntable, the small turntable and the large turntable are circumscribed, the slide rail comprises a high end surface and a low end surface, the preform insertion device comprises a rotating star wheel, a guide rod is installed on the rotating star wheel, a compression spring is installed on the outer ring of the guide rod, a rolling bearing is installed under the guide rod, the guide rod cooperates with the slide rail through the rolling bearing, a lifting fork is installed on the guide rod, a lifting rod is installed on the other end of the lifting fork, a preform insertion head is installed under the lifting rod, a spring is installed between the preform insertion head and the lifting rod, the preform insertion head cooperates with the preform through the spring and the lifting rod, and the characteristic is that the high end surface and the low end surface of the slide rail are connected through an inclined surface, and the rolling bearing is tightly attached to the high end surface, the low end surface and the inclined surface.

[0004] The embryo insertion head (bottle embryo) has a fixed pitch, usually 50mm or 40mm. Reducing the pitch of the embryo insertion head can reduce the scale of the heating machine on the one hand, and save energy on the other hand by increasing the proportion of effective heating area. Reducing the pitch of the embryo insertion head is subject to many constraints, and the key constraint comes from the embryo insertion lifting mechanism. The embryo insertion head often needs to complete multiple actions on the embryo insertion lifting mechanism, and the actions are usually achieved by the movement of the lifting guide assembly on the guide rail. The lifting guide assembly is installed in the star wheel cylinder. The lifting guide assembly divides the star wheel cylinder into sectors. The width of the outermost sector is slightly smaller than the pitch. A set of lifting guide assemblies should be arranged in each sector to drive the embryo insertion head to rise and fall. Obviously, the larger the sector area, the more convenient it is to arrange the lifting guide assembly, but at this time the circumference of the star wheel disc also becomes larger, which also leads to the need for more sets of lifting guide assemblies. Therefore, what is needed is to arrange as few embryo insertion lifting assemblies as possible under the smallest possible star wheel cylinder. Utility Model Content

[0005] The utility model aims to provide a double-track preform insertion lifting mechanism for a bottle blowing machine, which solves the problems raised by the background technology by setting an inner track and an outer track and providing two sets of lifting guide fork assemblies respectively matched with the inner track and the outer track at the end of the main star wheel cylinder.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a double-track embryo insertion lifting mechanism of a bottle blowing machine, comprising a cam lifting track and an embryo insertion device; the cam lifting track is provided with an inner track and an outer track; the embryo insertion device comprises a bearing support arranged concentrically with the slide rail, a slewing support is installed on the bearing support, the upper side of the slewing support is connected to the main star wheel cylinder, and the main star wheel cylinder is driven to rotate by a motor; the main star wheel cylinder is provided with a first group of openings and a second group of openings located in the inner ring and the outer ring respectively, and the first group of openings and the second group of openings both include N openings, and the inner wall of any of the openings is embedded with an oil-containing bearing, and the opening positions of the first group of openings and the second group of openings are matched one by one; the lifting guide fork assembly A and the lifting guide fork assembly B are staggeredly installed in the two groups of oil-containing bearings;

[0008] The lifting guide fork assembly A and the lifting guide fork assembly B have the same composition, both including a guide fork, a positioning rod and a lifting rod connected to the guide fork and cooperating with the oil-containing bearing, the ends of the lifting guide fork assembly A and the lifting guide fork assembly B are at the same distance from the axis of the bearing support; a compression spring is arranged on the outer side of the lifting rod, and the bottom end of the lifting rod is fixedly installed with a bearing roller A by a pin; under the action of the compression spring, the bearing roller A at the bottom of the lifting guide fork assembly A and the lifting guide fork assembly B are pressed on the inner track and the outer track respectively.

[0009] As a preferred technical solution of the utility model, the high end surface and the low end surface of the cam lifting track are connected via an inclined surface.

[0010] As a preferred technical solution of the utility model, the cam lifting track is installed on a track bracket.

[0011] As a preferred technical solution of the utility model, a convex ring is provided on the top inner side wall of the main star wheel cylinder, the end of the guide fork is connected to a support rod with a bearing roller B provided at the bottom, and the bearing roller B rolls along the convex ring.

[0012] As a preferred technical solution of the utility model, the positioning rod of the lifting guide fork assembly A is located between the lifting rod and the support rod; the lifting rod of the lifting guide fork assembly B is located between the positioning rod and the support rod.

[0013] The utility model has the following beneficial effects:

[0014] The utility model provides an inner track and an outer track, and two sets of lifting guide fork assemblies respectively matched with the inner track and the outer track are provided at the end of the main star wheel cylinder. On the one hand, the number of lifting guide assemblies can be reduced, the volume of the star wheel cylinder can be reduced, and the cost can be reduced. On the other hand, the bearing roller matched with the track surface is enlarged, the stability is improved, and at the same time, the structure changes less and the modifiability is strong.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the double-track embryo insertion lifting mechanism of the utility model;

[0018] Figure 2 for Figure 1 The main view of

[0019] Figure 3 This is a schematic diagram of the structure of the lifting guide fork assembly B of the utility model;

[0020] Figure 4 This is a structural schematic diagram of the lifting guide fork assembly A of the utility model. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] See also Figure 1-2As shown, the utility model is a double-track embryo insertion lifting mechanism of a bottle blowing machine, the purpose of which is to use fewer lifting guide components and related structures, and a smaller star wheel cylinder to achieve the same embryo insertion lifting function, while increasing stability; based on this purpose, the double-track embryo insertion lifting mechanism of the present application is arranged as a whole on the heating machine platen, including a cam lifting track 7 installed on a track bracket 4, and also includes a bearing support 1 arranged concentrically with the cam lifting track 7, a slewing support 2 is installed on the bearing support 1, and the upper side of the slewing support 2 is connected to the main star wheel cylinder 3, and the main star wheel cylinder 3 is driven to rotate by a motor; the main star wheel cylinder 3 is provided with a staggered lifting guide fork assembly A5 and a lifting guide fork assembly B6;

[0024] The cam lifting track 7 is provided with an inner track 701 and an outer track 702 which cooperate with the lifting guide fork assembly B6 and the lifting guide fork assembly A5 respectively.

[0025] Based on the above, in order to facilitate the staggered arrangement of the lifting guide fork assembly A5 and the lifting guide fork assembly B6, the main star wheel cylinder 3 is provided with a first group of openings and a second group of openings respectively located in the inner ring and the outer ring, and the first group of openings and the second group of openings each include N openings, and the inner wall of any opening is embedded with an oil-containing bearing 9, and the openings included in the first group of openings and the second group of openings match one by one in position and quantity, and the lifting guide fork assembly A5 and the lifting guide fork assembly B6 are mounted on the oil-containing bearing 9 in a coordinated manner.

[0026] Based on the purpose of the above configuration, the lifting guide fork assemblies 5 and 6 provided in the present application have the same composition but different structures, such as Figure 3 and 4 Specifically, a longer lifting rod 12 is installed at the front end of the lifting guide fork assembly 5, and a shorter positioning rod 11 is installed at the rear end, while the lifting guide fork assembly 6 is just the opposite. A reset spring 13 is sleeved inside the lifting rod, and a bearing roller 14 is fixedly installed at the bottom by a pin 15; the lower end of the reset spring 13 is limited by the lifting rod 12, and the upper end is limited by the oil-containing bearing 9 installed at the bottom of the main star wheel cylinder 3. Under the action of the compression spring 13, the bearing roller A14 at the bottom of the lifting guide fork assembly A5 and the lifting guide fork assembly B6 are pressed on the inner track 701 and the outer track 702 respectively.

[0027] It can be known that when working, the main star wheel cylinder 3 rotates, driving the rotation of the lifting guide fork assemblies 5 and 6. Under the restriction of the bottom cam guide rail and spring, the lifting guide fork assembly A5 and the lifting guide fork assembly B6 can move up and down following the cam guide surface while rotating, driving the embryo insertion head to move up and down to complete the predetermined action. Since the lifting guide fork assembly A5 and the lifting guide fork assembly B6 are staggered, it is possible to use a larger bearing roller, which increases the stability of the entire structure. At the same time, due to the staggered arrangement, the overall scale can be reduced, the star wheel cylinder can be reduced, and the number of guide rail lifting fork assemblies can be reduced.

[0028] Of course, in another embodiment, the cam lifting track 7 may be formed by the cooperation of the inner track 701 and the outer track 702 , or may be formed by widening a single cam track to cover two sets of lifting guide fork assemblies.

[0029] Of course, in another embodiment, the positioning rod 11 and the lifting rod 12 have the same diameter so as to be guided by the same oil-containing bearing 9 .

[0030] like Figure 2 The high end surface 71 and the low end surface 72 of the cam lifting track 7 are connected by an inclined surface 73; and a convex ring is provided on the top inner side wall of the main star wheel cylinder 3, and the end of the guide fork 10 is connected to a support rod with a bearing roller B provided at the bottom, and the bearing roller B rolls along the convex ring; Figure 3 and 4 The positioning rod 11 of the lifting guide fork assembly A5 is located between the lifting rod 12 and the support rod; the lifting rod 12 of the lifting guide fork assembly B6 is located between the positioning rod 11 and the support rod.

[0031] Meanwhile, in the present application, the cam lifting tracks 7 are arranged in two groups, and are respectively located on both sides of the main star wheel cylinder 3 .

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double-track preform insertion lifting mechanism for a bottle blowing machine, characterized in that: It comprises a cam lifting track (7) and a embryo insertion device; The cam lifting track (7) is provided with an inner track (701) and an outer track (702); The embryo insertion device comprises a bearing support (1) arranged concentrically with the cam lifting track (7), a slewing support (2) is installed on the bearing support (1), and the upper side of the slewing support (2) is connected to the main star wheel cylinder (3); The main star wheel cylinder (3) is provided with a first group of openings and a second group of openings located in the inner ring and the outer ring respectively, and the first group of openings and the second group of openings each include N openings, and an oil-containing bearing (9) is embedded in the inner wall of any opening, and the opening positions of the first group of openings and the second group of openings are matched one by one; The lifting guide fork assembly A (5) and the lifting guide fork assembly B (6) are staggeredly installed in the two sets of oil-containing bearings (9); The lifting guide fork assembly A (5) and the lifting guide fork assembly B (6) have the same composition, both comprising a guide fork (10), a positioning rod (11) and a lifting rod (12) connected to the guide fork (10) and cooperating with the oil-containing bearing (9), and the ends of the lifting guide fork assembly A (5) and the lifting guide fork assembly B (6) are at the same distance from the axis of the bearing support (1); A compression spring (13) is arranged on the outer side of the lifting rod (12), and a bearing roller A (14) is fixedly mounted on the bottom end of the lifting rod (12) via a pin (15); Under the action of the compression spring (13), the bearing rollers A (14) at the bottom of the lifting guide fork assembly A (5) and the lifting guide fork assembly B (6) are pressed onto the inner track (701) and the outer track (702) respectively.

2. The double-track preform insertion lifting mechanism of a bottle blowing machine according to claim 1, characterized in that: The high end surface (71) and the low end surface (72) of the cam lifting track (7) are connected via an inclined surface (73).

3. The double-track preform insertion lifting mechanism of a bottle blowing machine according to claim 1, characterized in that: The cam lifting track (7) is installed on the track bracket (4).

4. The double-track preform insertion lifting mechanism of a bottle blowing machine according to claim 1, characterized in that: The top inner side wall of the main star wheel cylinder (3) is provided with a convex ring, the end of the guide fork (10) is connected to a support rod with a bearing roller B at the bottom, and the bearing roller B rolls along the convex ring.

5. The double-track preform insertion lifting mechanism of a bottle blowing machine according to claim 4, characterized in that: The positioning rod (11) of the lifting guide fork assembly A (5) is located between the lifting rod (12) and the support rod; the lifting rod (12) of the lifting guide fork assembly B (6) is located between the positioning rod (11) and the support rod.

Images