Three-station arrangement structure of three-station injection blow molding machine
By using upright injection blowing rods and corresponding cavity in the three-position injection blowing machine, the problem of insufficient number of cavity in traditional injection blowing machines is solved, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202421677538.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In traditional three-station injection and blowing machines, the horizontal arrangement of the injection and blowing core rods leads to a larger projection area of the bottle preform on the parting surface, resulting in a smaller number of cavity in the same horizontal area and a lower production efficiency.
The vertical injection blowing rod and the corresponding vertical injection molding cavity and the blow molding semi-cavity are adopted, combined with a movable locking template, increasing the number of cavity that can be arranged in the same horizontal area.
More cavity can be arranged in the same level area, improving productivity and reducing costs and burning risks by simplifying the release mechanism.
Smart Images
Figure CN222819514U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a three-station injection-blowing machine, in particular to a three-station arrangement structure of the three-station injection-blowing machine. Background Art
[0002] As is known to all, the structure of a three-station injection blow molding machine generally includes: a rotating shaft, an injection station, a blow molding station and a demolding station which are arranged in three equal parts around the rotating shaft, and three injection blow core rod groups rotating among the injection station, the blow molding station and the demolding station. An injection mold is arranged at the injection station, and an injection mold is arranged with an injection cavity which corresponds to the injection blow core rods in the injection blow core rod group one by one. A blow molding mold is arranged at the blow molding station, and the blow molding mold includes a pair of blow molding half molds which can be opened and closed horizontally, and each blow molding half mold is provided with a blow molding half cavity which corresponds to the injection blow core rods in the injection blow core rod group one by one. At present, the injection-blowing core rods in the traditional three-station injection-blowing machines are usually arranged horizontally, that is, the axis of the injection-blowing core rod is perpendicular to the rotating axis. Correspondingly, the injection cavity in the injection mold at the injection station and the blow molding half-cavity in a pair of blow molding molds at the blow molding station are all arranged horizontally, so that the projection area of the bottle blank on the parting surface is larger, so the number of cavities that can be arranged in the same horizontal area is smaller, and the production efficiency is lower. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a three-station arrangement structure of a three-station injection-blow molding machine capable of arranging more cavities in the same horizontal area.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a three-station arrangement structure of a three-station injection-blowing machine, comprising: a rotary shaft, and an injection station, a blow molding station and a demolding station arranged in three equal parts around the rotary shaft, a horizontally arranged rotary table is arranged on the rotary shaft, and three injection-blowing core rod groups are arranged in three equal parts along the circumferential direction on the rotary table, each injection-blowing core rod group includes: a plurality of upright injection-blowing core rods; an injection mold is arranged on the injection station, and a mold is arranged on the injection mold in contact with the injection-blowing core rod group The vertical injection cavity corresponds to the vertical injection core rods in the injection core rod group one by one, the injection station is also provided with an injection locking template which can be moved up and down above the corresponding injection blowing core rod group, the blow molding station is provided with a blow molding mold, the blow molding mold includes a pair of blow molding half molds which can be opened and closed horizontally, each blow molding half mold is provided with a vertical blow molding half cavity which corresponds to the vertical injection blowing core rods in the injection blowing core rod group one by one, and the blow molding station is also provided with a blow molding locking template which can be moved up and down above the corresponding injection blowing core rod group.
[0005] As a preferred solution, in the three-station arrangement structure of the three-station injection blow molding machine, a stripping plate corresponding to each injection blow core rod group is arranged below the rotary worktable, and each stripping plate is provided with a conical stripping sleeve corresponding to the upright injection blow core rod in the injection blow core rod group, and the conical stripping sleeves are movably arranged on the corresponding upright injection blow core rods in the injection blow core rod group one by one, and cooperate with the upper port of the corresponding upright blow molding cavity.
[0006] As a preferred embodiment, in the three-station arrangement structure of the three-station injection blow molding machine, the blow molding mold also includes: a bottom molding mold centrally arranged between a pair of blow molding half-molds, and the bottom molding mold is provided with a bottom molding surface that corresponds one to one with the upright blow molding half-cavities corresponding to each other on the pair of blow molding half-molds.
[0007] As a preferred embodiment, in the three-station arrangement structure of the three-station injection blow molding machine, the specific arrangement of the blow molding half-mold is as follows: a linear power device is respectively arranged on both sides of the pair of blow molding half-molds at the blow molding station, and the driving rod of the linear power device is connected to the blow molding half-mold on the corresponding side.
[0008] As a preferred solution, in the three-station arrangement structure of the three-station injection blow molding machine, the linear power device is a cylinder.
[0009] The beneficial effects of the utility model are:
[0010] 1. The utility model adopts a vertical injection-blow core rod, and a corresponding vertical injection cavity and a vertical blow molding half cavity, so that more cavities can be arranged in the same horizontal area, greatly improving production efficiency.
[0011] 2. The utility model adopts a vertical injection blowing core rod, so that the demoulding mechanism is relatively simple. The blow-molded plastic product can be easily removed from the vertical injection blowing core rod by means of a demoulding plate and a conical demoulding sleeve, thereby greatly reducing the cost. Moreover, the vertical injection blowing core rod will not be touched during the demoulding process, that is, the plastic product will not sag due to the influence of its own gravity during the demoulding process, as in the case of demoulding from a horizontally arranged injection blowing core rod, causing the plastic product to rub against the injection blowing core rod and be burned.
[0012] 3. The utility model arranges a bottom molding mold in the middle between a pair of blow molding half-molds, and the bottom molding mold is provided with bottom molding surfaces corresponding to the upright blow molding half-cavities on the pair of blow molding half-molds, thereby greatly simplifying the structure of the blow molding half-cavities on the blow molding half-molds and greatly reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model when the injection and blow molding are in mold closing.
[0014] Figure 2 It is a structural schematic diagram of the utility model when the mold is opened for injection and blow molding.
[0015] Figure 3 It is a schematic diagram of the structure of the demoulding station during demoulding.
[0016] Figures 1 to 3 The reference numerals in the drawings are respectively: 1, rotary shaft, 2, rotary worktable, 3, injection mold, 301, vertical injection cavity, 31, hot runner, 32, barrel, 33, injection locking plate, 40, bottom molding mold, 400, bottom molding surface, 41, blow molding half mold, 411 vertical blow molding half cavity, 42, blow molding half mold, 421 vertical blow molding half cavity, 43, blow molding locking plate, 6, tapered demolding sleeve, 60, stripping plate, 7, vertical injection blow core rod, 9, threadless mouth plastic bottle, 90, bottle blank. DETAILED DESCRIPTION
[0017] In conjunction with the accompanying drawings, a specific implementation scheme of the three-station arrangement structure of a three-station injection-blow molding machine described in the utility model will be described in detail by taking the injection-blow molding of a plastic bottle without a threaded mouth as an example.
[0018] like Figure 1 and Figure 2 As shown, the three-station arrangement structure of the three-station injection blow molding machine described in the utility model includes: a rotary shaft 1, and an injection station, a blow molding station and a demolding station arranged in three equal parts around the rotary shaft 1 (which belong to the conventional technology in this field and will not be described in detail here), a horizontally arranged rotary table 2 is arranged on the rotary shaft 1, and three injection blow core rod groups are arranged in three equal parts on the rotary table 2 along the circumferential direction, each injection blow core rod group includes: eight upright injection blow core rods 7 (see Figure 3As shown in the figure, the number of upright injection-blowing core rods 7 can be adjusted according to actual conditions); an injection mold 3 is arranged on the injection station, and an upright injection cavity 301 corresponding to the upright injection-blowing core rods 7 in the injection-blowing core rod group is arranged on the injection station, and an injection locking template 33 which can be moved up and down is also arranged above the corresponding injection-blowing core rod group (it belongs to the conventional technology in this field and will not be described in detail here); a blow molding mold is arranged on the blow molding station, and the blow molding mold includes a pair of blow molding half molds 41 and 42 which can be opened and closed horizontally and a bottom molding mold 40 which is centrally arranged between the blow molding half molds 41 and 42, and the blow molding The mold half-mold 41 is provided with an upright blow molding half-cavity 411 corresponding one-to-one to the upright injection blowing core rod 7 in the injection blowing core rod group, and the blow molding half-mold 42 is provided with an upright blow molding half-cavity 421 corresponding one-to-one to the upright injection blowing core rod 7 in the injection blowing core rod group. The bottom molding mold 40 is provided with a bottom molding surface 400 corresponding one-to-one to the upright blow molding half-cavities 411 and 421 on the blow molding half-molds 41 and 42. The blow molding station is also provided with a blow molding locking template 43 that can be moved up and down above the corresponding injection blowing core rod group (which belongs to the conventional technology in this field and will not be described in detail here). In this embodiment, three stripping plates 60 corresponding to the three injection blowing core rod groups are arranged below the rotary workbench 2, and each stripping plate 60 is provided with a conical stripping sleeve 6 corresponding to the eight upright injection blowing core rods 7 in the injection blowing core rod group. The conical stripping sleeve 6 is movably arranged on the corresponding upright injection blowing core rods 7 in the injection blowing core rod group, and cooperates with the upper port of the corresponding upright blow molding cavity (the upright blow molding half cavity 411 on the blow molding half mold 41 and the corresponding upright blow molding half cavity 421 on the blow molding half mold 42 form an upright blow molding cavity when the mold is closed).
[0019] In actual application, the three-station injection-blow molding machine is also provided with a demoulding drive device for moving the demoulding plate 60 up and down (this is a common technology in the art and will not be described in detail here).
[0020] The working principle of the utility model is as follows: Figure 1 As shown, at the preform injection station, the molten plastic is injected into the vertical preform injection cavity 301 on the preform injection mold 3 through the barrel 32 and the hot runner 31, and the preform formed by the previous round of injection molding is blow molded in the blow molding cavity formed by the blow molding half molds 41 and 42, the bottom molding mold 40 and the conical demolding sleeve 6; after the preform injection and blow molding are completed, the rotary shaft 1 rises to open the mold (see Figure 2 As shown), the vertical injection blow core rod 7 with the preform is then rotated 120 degrees to the blow molding station, and the vertical injection blow core rod 7 with the formed non-threaded mouth plastic bottle 9 is transferred to the demoulding station, as shown. Figure 3As shown, at the demolding station, the demolding plate 60 moves downward under the action of the demolding driving device, and pushes the non-threaded mouth plastic bottle 9 downward to obtain the finished product. The entire demolding process is very simple and convenient, and the upright injection-blowing core rod 7 after demolding is transferred to the preform injection station, and this cycle is repeated.
[0021] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications made to the shape, structure, characteristics and spirit described in the scope of the claims of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A three-station arrangement structure of a three-station injection blow molding machine, comprising: The invention relates to a rotary shaft, and an injection station, a blow molding station and a demoulding station which are arranged in three equal parts around the rotary shaft, characterized in that a horizontally arranged rotary table is arranged on the rotary shaft, and three injection and blowing core rod groups are arranged in three equal parts along the circumferential direction on the rotary table, and each injection and blowing core rod group includes: a plurality of upright injection and blowing core rods; an injection mold is arranged on the injection station, and an upright injection mold is arranged on the injection mold corresponding to the upright injection and blowing core rods in the injection and blowing core rod group. The injection station is provided with an injection locking template which can be moved up and down above the corresponding injection and blowing core rod group; the blow molding station is provided with a blow molding mold, which includes a pair of blow molding half molds which can be opened and closed horizontally, each blow molding half mold is provided with an upright blow molding half cavity which corresponds to the upright injection and blowing core rods in the injection and blowing core rod group one by one; the blow molding station is provided with a blow molding locking template which can be moved up and down above the corresponding injection and blowing core rod group.
2. The three-station arrangement structure of a three-station injection blow molding machine according to claim 1, characterized in that: A stripping plate corresponding to each injection blowing core rod group is arranged below the rotary worktable, and each stripping plate is provided with a conical stripping sleeve corresponding to the upright injection blowing core rod in the injection blowing core rod group. The conical stripping sleeves are movably arranged on the corresponding upright injection blowing core rods in the injection blowing core rod group one by one, and matched with the upper port of the corresponding upright blow molding cavity.
3. The three-station arrangement structure of a three-station injection blow molding machine according to claim 1, characterized in that: The blow molding mold further comprises: a bottom molding mold centrally arranged between a pair of blow molding half molds, the bottom molding mold being provided with bottom molding surfaces corresponding one to one with the upright blow molding half cavities corresponding to each other on the pair of blow molding half molds.
4. A three-station arrangement structure of a three-station injection blow molding machine according to any one of claims 1 to 3, characterized in that: The blow molding half mold is specifically arranged as follows: a linear power device is respectively arranged on both sides of the pair of blow molding half molds at the blow molding station, and a driving rod of the linear power device is connected to the blow molding half mold on the corresponding side.
5. The three-station arrangement structure of a three-station injection blow molding machine according to claim 4, characterized in that: The linear power device is a cylinder.