Variable-pitch injection core plate structure of injection-stretch-blow equipment
By designing the variable-distance injection board structure in the injection and pull-and-distance blowing equipment, and adjusting the position of the bottom plate at different process stages using the guide rail and the variable-distance assembly, the problem of inefficiency in the existing equipment when dealing with two sets of parisons at the same time is solved, and efficient parison molding and expansion is achieved.
Patent Information
- Application Number
- CN202421753226.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-23
AI Technical Summary
When the existing injection-pull blow molding equipment blow molding two groups of parisons at the same time, the volume of the parison becomes larger, making it difficult to release the mold, and the efficiency is low.
A variable-distance injection-injection plate structure of an injection-pull-blowing device is designed. Through the guide rail and the variable-distance assembly, the first bottom plate and the second bottom plate are brought close to the injection-molding process, which facilitates the molding of the parison; it is away from the blow-molding process, providing sufficient cutting space to facilitate expansion of the parison.
The injection and blowing equipment can process two sets of products at the same time, which improves work efficiency and avoids the problem of difficult demolding of the parison after blow molding.
Smart Images
Figure CN222946107U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection stretch blow molding equipment, in particular to a variable distance core injection plate structure of injection stretch blow molding equipment. Background Art
[0002] Injection stretch blow molding equipment is a kind of equipment widely used in the production of plastic hollow products. Its process mainly includes injection molding, heating, stretching and blow molding. This equipment first uses an injection machine to inject molten plastic into the injection mold, and then rapidly cools it to form a transparent bottomed parison. The key to this stage is to ensure uniform cooling and molding of the parison to ensure its transparency and physical properties.
[0003] In the next workstation, the parison needs to be heated so that its internal and external temperatures rise evenly to a suitable stretching temperature; after heating to the predetermined temperature, the equipment will stretch the parison and fill it with compressed air to expand the parison into the desired hollow product.
[0004] The current injection stretch blow molding equipment generally performs injection stretch blow molding on a group of parisons, which has the problem of low efficiency. Since the volume of the parison will increase during the blow molding process, if two groups of parisons are blow molded at the same time, it will make the blow-molded products difficult to demold. Utility Model Content
[0005] The utility model aims to provide a variable distance core injection plate structure of an injection stretch blow molding device in view of the above-mentioned deficiencies in the prior art.
[0006] The purpose of the utility model is achieved through the following technical solutions: a variable distance core injection plate structure of an injection stretch blow molding device, comprising a guide rail, a first bottom plate and a second bottom plate; the first bottom plate and the second bottom plate are respectively slidably arranged at the two ends of the guide rail; the first bottom plate and the second bottom plate are respectively provided with a first core injection mold and a second core injection mold;
[0007] The variable distance core injection plate structure of the injection stretch blow molding equipment also includes a variable distance component for driving the first base plate and the second base plate to move closer and further away.
[0008] The utility model is further configured as follows: the first bottom plate is provided with a first sliding block; the second bottom plate is provided with a second sliding block; the first sliding block and the second sliding block are respectively slidably arranged at two ends of the guide track.
[0009] The utility model is further configured such that the first sliding block is detachably connected to the first bottom plate; and the second sliding block is detachably connected to the second bottom plate.
[0010] The utility model is further configured as follows: the variable pitch assembly includes a first connecting rod, a second connecting rod and a connecting plate; one end of the first connecting rod is hinged to the first slider; the other end of the first connecting rod is hinged to one end of the connecting plate; one end of the second connecting rod is hinged to the second slider; the other end of the second connecting rod is hinged to the other end of the connecting plate.
[0011] The utility model is further configured that the variable distance core injection plate structure of the injection stretch blow molding equipment also includes a limit seat; the limit seat is provided with a limit hole; the connecting plate is provided with a limit rod; the limit rod is movable in lifting and lowering in the limit hole.
[0012] The utility model is further configured such that the first injection core mold is detachably connected to the first bottom plate; and the second injection core mold is detachably connected to the second bottom plate.
[0013] The utility model is further configured such that the first bottom plate and the second bottom plate are both provided with positioning grooves; the first injection core mold and the second injection core mold are both provided with positioning blocks matched with the positioning grooves.
[0014] The utility model is further configured as follows: the first bottom plate is provided with a first strip groove; the second bottom plate is provided with a second strip groove; the first injection core mold is exposed in the first strip groove; the second injection core mold is exposed in the second strip groove.
[0015] The utility model is further configured as follows: the first core injection mold is provided with a first material cutting slope; the first material cutting slope is exposed in the first strip groove; the second core injection mold is provided with a second material cutting slope; the second material cutting slope is exposed in the second strip groove.
[0016] The utility model is further configured such that both ends of the first base plate and both ends of the second base plate are provided with guide rails and variable distance components.
[0017] The beneficial effects of the utility model are as follows: when injection molding is required, the utility model brings the first bottom plate and the second bottom plate closer together through the variable distance component, thereby facilitating cooperation with the injection mold to form two groups of parisons in the first injection core mold and the second injection core mold; during blow molding, since the volume of the parison increases, it is necessary to use the variable distance component to move the first bottom plate away from the second bottom plate, thereby providing sufficient space for unloading the two groups of parisons, so that the injection stretch blow molding equipment can process two groups of products at the same time, effectively improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.
[0019] Figure 1It is a structural schematic diagram of the utility model;
[0020] Figure 2 It is a structural schematic diagram of the utility model from another perspective;
[0021] Among them: 1. guide rail; 11. first slider; 12. second slider; 2. first bottom plate; 21. positioning groove; 22. first strip groove; 3. second bottom plate; 31. second strip groove; 4. first injection core mold; 41. positioning block; 42. first blanking slope; 5. second injection core mold; 51. second blanking slope; 6. connecting plate; 61. first connecting rod; 62. second connecting rod; 63. limiting rod; 7. limiting seat; 71. limiting hole. DETAILED DESCRIPTION
[0022] The utility model is further described in conjunction with the following embodiments.
[0023] Depend on Figure 1 to Figure 2 It can be seen that the variable distance core injection plate structure of the injection stretch blow molding equipment described in this embodiment includes a guide rail 1, a first bottom plate 2 and a second bottom plate 3; the first bottom plate 2 and the second bottom plate 3 are respectively slidably arranged at both ends of the guide rail 1; the first bottom plate 2 and the second bottom plate 3 are respectively provided with a first core injection mold 4 and a second core injection mold 5;
[0024] The variable pitch core injection plate structure of the injection stretch blow molding equipment further includes a variable pitch component for driving the first base plate 2 and the second base plate 3 to move closer and further away.
[0025] Specifically, the variable distance core plate structure of the injection stretch blow molding equipment described in this embodiment, when injection molding is required, the first base plate 2 and the second base plate 3 are brought close to each other through the variable distance component, so as to facilitate the cooperation with the injection mold to form two groups of parisons in the first core mold 4 and the second core mold 5; during blow molding, since the volume of the parison increases, it is necessary to use the variable distance component to move the first base plate 2 and the second base plate 3 away from each other, so as to provide sufficient space for unloading the two groups of parisons, so that the injection stretch blow molding equipment can process two groups of products at the same time, effectively improving work efficiency.
[0026] In the variable pitch core injection plate structure of the injection stretch blow molding equipment described in this embodiment, the first bottom plate 2 is provided with a first slider 11; the second bottom plate 3 is provided with a second slider 12; the first slider 11 and the second slider 12 are respectively slidably arranged at the two ends of the guide rail 1. Specifically, through the above arrangement, the first bottom plate 2 and the second bottom plate 3 can slide stably.
[0027] In the variable pitch core injection plate structure of the injection stretch blow molding equipment described in this embodiment, the first slider 11 is detachably connected to the first base plate 2; the second slider 12 is detachably connected to the second base plate 3. The above arrangement facilitates the disassembly and assembly of the first base plate 2 and the second base plate 3.
[0028] The present embodiment describes a variable pitch core plate structure of an injection stretch blow molding equipment, wherein the variable pitch assembly includes a first connecting rod 61, a second connecting rod 62 and a connecting plate 6; one end of the first connecting rod 61 is hinged to the first slider 11; the other end of the first connecting rod 61 is hinged to one end of the connecting plate 6; one end of the second connecting rod 62 is hinged to the second slider 12; the other end of the second connecting rod 62 is hinged to the other end of the connecting plate 6.
[0029] Specifically, when the first bottom plate 2 and the second bottom plate 3 need to move closer or farther away, it is only necessary to control the connection plate 6 to rise and fall, so that under the action of the first connecting rod 61 and the second connecting rod 62, the first bottom plate 2 and the second bottom plate 3 can move toward each other or relative to each other synchronously.
[0030] The variable distance core injection plate structure of the injection stretch blow molding equipment described in this embodiment further includes a limit seat 7; the limit seat 7 is provided with a limit hole 71; the connecting plate 6 is provided with a limit rod 63; the limit rod 63 is arranged in the limit hole 71 for lifting and lowering. Specifically, the above arrangement enables the connecting plate 6 to stably perform lifting and lowering activities.
[0031] In the variable distance core injection plate structure of the injection stretch blow molding equipment described in this embodiment, the first core injection mold 4 is detachably connected to the first base plate 2; the second core injection mold 5 is detachably connected to the second base plate 3. Specifically, through the above arrangement, the first core injection mold 4 and the second core injection mold 5 can be replaced to adapt to different products.
[0032] In the variable distance core injection plate structure of the injection stretch blow molding equipment described in this embodiment, the first bottom plate 2 and the second bottom plate 3 are both provided with positioning grooves 21; the first core injection mold 4 and the second core injection mold 5 are both provided with positioning blocks 41 that cooperate with the positioning grooves 21. The above arrangement ensures that the first bottom plate 2 and the first core injection mold 4 are firmly connected, and the second bottom plate 3 and the second core injection mold 5 are firmly connected.
[0033] In the variable distance core injection plate structure of the injection stretch blow molding equipment described in this embodiment, the first bottom plate 2 is provided with a first strip groove 22; the second bottom plate 3 is provided with a second strip groove 31; the first core injection mold 4 is exposed in the first strip groove 22; the second core injection mold 5 is exposed in the second strip groove 31. Specifically, the above arrangement facilitates the first core injection mold 4 and the second core injection mold 5 to cooperate with the external mechanism respectively.
[0034] In the variable pitch core injection plate structure of the injection stretch blow molding equipment described in this embodiment, the first core injection mold 4 is provided with a first material discharge slope 42; the first material discharge slope 42 is exposed in the first strip groove 22; the second core injection mold 5 is provided with a second material discharge slope 51; the second material discharge slope 51 is exposed in the second strip groove 31. Through the above arrangement, the external ejector rod can pass through the first material discharge slope 42 and the second material discharge slope 51, thereby ejecting the product in the first core injection mold 4 and the product in the second core injection mold 5.
[0035] In the variable pitch core injection plate structure of the injection stretch blow molding equipment described in this embodiment, guide rails 1 and variable pitch components are provided at both ends of the first base plate 2 and the second base plate 3. The above arrangement makes the movement of the first base plate 2 and the movement of the second base plate 3 stable and reliable.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.
Claims
1. A variable pitch core injection plate structure for an injection stretch blow molding device, characterized in that: It includes a guide rail, a first bottom plate and a second bottom plate; the first bottom plate and the second bottom plate are respectively slidably arranged at two ends of the guide rail; the first bottom plate and the second bottom plate are respectively provided with a first injection core mold and a second injection core mold; The variable distance core injection plate structure of the injection stretch blow molding equipment also includes a variable distance component for driving the first base plate and the second base plate to move closer and further away.
2. A variable pitch core injection plate structure for an injection stretch blow molding device according to claim 1, characterized in that: The first bottom plate is provided with a first sliding block; the second bottom plate is provided with a second sliding block; the first sliding block and the second sliding block are respectively slidably arranged at two ends of the guide track.
3. A variable pitch core injection plate structure for an injection stretch blow molding device according to claim 2, characterized in that: The first sliding block is detachably connected to the first bottom plate; the second sliding block is detachably connected to the second bottom plate.
4. A variable pitch core injection plate structure for an injection stretch blow molding device according to claim 2, characterized in that: The variable pitch assembly includes a first connecting rod, a second connecting rod and a connecting plate; one end of the first connecting rod is hinged to the first slider; the other end of the first connecting rod is hinged to one end of the connecting plate; one end of the second connecting rod is hinged to the second slider; the other end of the second connecting rod is hinged to the other end of the connecting plate.
5. A variable pitch core injection plate structure for an injection stretch blow molding device according to claim 4, characterized in that: The variable distance injection core plate structure of the injection stretch blow molding equipment also includes a limit seat; the limit seat is provided with a limit hole; the connecting plate is provided with a limit rod; the limit rod is movable in lifting and lowering in the limit hole.
6. The variable pitch core injection plate structure of the injection stretch blow molding equipment according to claim 1, characterized in that: The first injection core mold is detachably connected to the first bottom plate; the second injection core mold is detachably connected to the second bottom plate.
7. A variable pitch core injection plate structure for an injection stretch blow molding machine according to claim 6, characterized in that: The first bottom plate and the second bottom plate are both provided with positioning grooves; the first injection core mold and the second injection core mold are both provided with positioning blocks matched with the positioning grooves.
8. The variable pitch core injection plate structure of the injection stretch blow molding equipment according to claim 1, characterized in that: The first bottom plate is provided with a first strip groove; the second bottom plate is provided with a second strip groove; the first injection core mold is exposed in the first strip groove; the second injection core mold is exposed in the second strip groove.
9. A variable pitch core injection plate structure for an injection stretch blow molding machine according to claim 8, characterized in that: The first core injection mold is provided with a first material cutting slope; the first material cutting slope is exposed in the first strip groove; the second core injection mold is provided with a second material cutting slope; the second material cutting slope is exposed in the second strip groove.
10. A variable pitch core injection plate structure for an injection stretch blow molding device according to claim 9, characterized in that: Both ends of the first bottom plate and both ends of the second bottom plate are provided with guide rails and variable distance components.