Blow molding machine with diagonal demolding device and blow molding machine

Abstract

The utility model belongs to the technical field of injection blow machine, concretely relates to a kind of oblique demoulding device and injection blow machine for injection blow machine, comprising: driving sliding pair, its sliding direction is parallel with mandrel, and the sliding end of driving sliding pair is provided with first support;Passive sliding pair, its sliding direction is perpendicular to mandrel, and passive sliding pair is set on first support, to follow first support and approach or away from mandrel;Demoulding plate, it is set on the sliding end of passive sliding pair, and demoulding plate is opened with demoulding gap, and demoulding gap is suitable for the product on mandrel and is set;Guide, its demoulding direction is parallel with product;And, the bottom of demoulding plate is opened with guide gap, and guide is set in guide gap, to make demoulding plate follow driving sliding pair and away from mandrel, obliquely move under the guidance of guide;Through the driving of first support away from mandrel by driving sliding pair, passive sliding pair follows away from mandrel, and simultaneously, demoulding plate is obliquely slid on passive sliding pair under the guidance of guide, and demoulding is completed.

Description

Technical Field

[0001] This utility model belongs to the field of injection blow molding machine technology, specifically relating to an inclined demolding device for injection blow molding machine and an injection blow molding machine. Background Technology

[0002] Injection molding machines are the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. Blow molding machines are plastic processing machines; after liquid plastic is sprayed out, the machine uses air force to blow the plastic body into a mold cavity of a certain shape, thereby making a product. Injection blow molding machines are a molding method that combines the characteristics of injection molding and blow molding. They usually include an injection molding unit, a blow molding unit, and a demolding unit. The mold frame passes through the injection molding unit, blow molding unit, and demolding unit in sequence through rotating and lifting joints to complete the pre-forming, blow molding, and demolding of the product. It is often used to produce straight-necked bottles.

[0003] Existing demolding devices typically consist of an active sliding pair with a demolding template. The product is held in place by a demolding notch in the template, and the active sliding pair pulls the template to remove the product, thus achieving demolding. However, some bottles have an angled design (the bottle mouth and body have a certain angle), requiring angled demolding after blow molding. The current solution is to adjust the angle of the active sliding pair to be parallel to the demolding direction of the product. However, when changing products, the angle of the active sliding pair needs to be readjusted, which increases the debugging time and ultimately reduces the production efficiency of the product.

[0004] Therefore, how to avoid the need to readjust the angle of the active sliding pair when replacing products is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one oblique stripping device for an injection blow molding machine and an injection blow molding machine.

[0007] In a first aspect, embodiments of this disclosure provide an oblique demolding device for an injection blow molding machine, comprising: an active sliding pair, the sliding direction of which is parallel to the mandrel, the sliding end of which is provided with a first support; a passive sliding pair, the sliding direction of which is perpendicular to the mandrel, the passive sliding pair being disposed on the first support to follow the first support toward or away from the mandrel; a demolding template, disposed at the sliding end of the passive sliding pair, the demolding template having a demolding notch adapted to hold the product on the mandrel; a guide member, parallel to the demolding direction of the product; and a guide notch being provided at the bottom of the demolding template, the guide member being engaged within the guide notch so that when the demolding template follows the active sliding pair away from the mandrel, it moves obliquely under the guidance of the guide member.

[0008] In one optional embodiment, the passive sliding pair includes a second bracket, a passive slide rail, and a passive slider; the second bracket is disposed on the top of the first bracket, the passive slide rail is disposed on the top of the second bracket, the passive slider is slidably disposed on the passive slide rail, and the release template is disposed on the side wall of the passive slider.

[0009] In one alternative embodiment, the passive slide rail extends out of the second brackets at both ends, and the extended ends of the passive slide rail are provided with limit blocks, which are adapted to abut against the passive slider to prevent the passive slider from slipping off.

[0010] In one alternative implementation, the number of passive sliders is not less than two, and the spacing between the passive sliders is equal.

[0011] In one optional embodiment, the demolding template is rectangular, and the demolding notches are evenly distributed on the top of the demolding template; and, an air blowing hole is provided in the demolding notch, and an air inlet is provided on the side wall of the demolding template, the air blowing hole is connected to the air inlet through a flow channel, and the air inlet is adapted to be connected to an air source so that the air blowing hole blows air to blow off the product.

[0012] In one alternative embodiment, the bottom of the template extends downward with an extension block, and the guide notch is formed on the extension block and extends through the bottom of the extension block.

[0013] In one optional embodiment, a pair of pins are provided within the guide notch, and guide wheels are rotatably provided at the ends of the pins, with the guide wheels respectively abutting against the sidewalls of the guide member.

[0014] In one optional embodiment, the active sliding pair includes a pair of hydraulic cylinders and at least one guide rod; the hydraulic cylinders are mounted on the base, the side wall of the first bracket is connected to the piston rod of the hydraulic cylinder, one end of the guide rod is fixedly connected to the side wall of the first bracket, and the other end is slidably mounted on the base.

[0015] In one alternative embodiment, the guide is strip-shaped, with its end extending to the top of the base and connected to the base by bolts.

[0016] Secondly, embodiments of this disclosure also provide an injection blow molding machine, comprising: a base having an injection position, a blow molding position, and a demolding position arranged in a ring array on its top; a rotating joint disposed within the base; a lifting joint mounted on the top of the base; a mold frame being lifted and lowered on the rotating shaft of the rotating joint, and the top of the mold frame being connected to the lifting end of the lifting joint, so that the mold frame reciprocates between the injection position, the blow molding position, and the demolding position; and three sets of mandrels arranged in an array on the sidewalls of the mold frame; and the aforementioned inclined demolding device for the injection blow molding machine, wherein the active sliding joint is disposed at the demolding position.

[0017] The beneficial effects of this utility model are that the inclined demolding device and the injection blow molding machine use an active sliding pair to drive the first support away from the mandrel, and the passive sliding pair follows away from the mandrel. At the same time, the demolding plate slides obliquely on the passive sliding pair under the guidance of the guide. The product stuck by the demolding notch is demolded obliquely. When changing different products, only different guides need to be replaced, avoiding the need to adjust the active sliding pair and improving the production efficiency of the product.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A perspective view of an injection blow molding machine provided in an embodiment of this disclosure; Figure 2 A perspective view of an inclined demolding device for an injection blow molding machine provided in an embodiment of this disclosure; Figure 3 A perspective view of an inclined demolding device for an injection blow molding machine provided in an embodiment of this disclosure; Figure 4 This is a perspective view of an inclined stripping device for an injection blow molding machine provided in an embodiment of this disclosure.

[0022] In the picture: 1. Active sliding pair; 11. First support; 12. Hydraulic cylinder; 13. Polished rod; 2. Passive sliding pair; 21. Second bracket; 22. Passive slide rail; 23. Passive slider; 24. Limit block; 3. Demolding template; 31. Extension block; 31a. Guide notch; 31b. Insert pin; 31c. Guide wheel; 32. Demolding notch; 33. Air vent; 34. Air inlet; 4. Guide components; 5. Machine base; 51. Injection position; 52. Blow molding position; 53. Demolding position; 54. Rotating joint; 55. Lifting joint; 6. Mold frame; 61. Mandrel. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0026] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0027] Research has revealed that in existing technologies, when different demolding angles are required, the angle of the active sliding pair needs to be adjusted. However, the active sliding pair usually includes components such as hydraulic cylinders and guide rods, which makes adjustment inconvenient. This is the problem and objective that the utility model aims to solve.

[0028] Based on the above research, this disclosure provides an inclined demolding device and an injection blow molding machine for an injection blow molding machine. The device drives the demolding template away from the mandrel through an active sliding pair, and with the help of a guide, the demolding template moves obliquely when it moves away, thereby completing the inclined demolding of the product.

[0029] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] See Figures 1 to 4A slanted demolding device for an injection blow molding machine is shown, comprising: an active sliding pair 1, whose sliding direction is parallel to a mandrel 61, and a first support 11 provided at the sliding end of the active sliding pair 1; a passive sliding pair 2, whose sliding direction is perpendicular to the mandrel 61, and the passive sliding pair 2 is disposed on the first support 11 to follow the first support 11 toward or away from the mandrel 61 (corresponding to reset and demolding respectively); a demolding template 3, disposed at the sliding end of the passive sliding pair 2, and having a demolding notch 32 on the demolding template 3, the demolding notch 32 being adapted to hold the product on the mandrel 61; a guide 4, which is parallel to the demolding direction of the product; and The bottom of the demolding template 3 is provided with a guide notch 31a, and the guide 4 is engaged in the guide notch 31a so that when the demolding template 3 moves away from the mandrel 61 along with the active sliding pair 1, it moves obliquely under the guidance of the guide 4. In short, by driving the first support 11 away from the mandrel 61 through the active sliding pair 1, the passive sliding pair 2 moves away from the mandrel 61 as well. At the same time, the demolding template 3 slides obliquely on the passive sliding pair 2 under the guidance of the guide 4. The product that is stuck by the demolding notch 32 is dislodged obliquely. When changing different products, only different guides 4 need to be replaced, avoiding the need to adjust the active sliding pair 1 and improving the production efficiency of the product.

[0033] In some embodiments, the passive sliding pair 2 includes a second support 21, a passive slide rail 22, and a passive slider 23; the second support 21 is disposed on the top of the first support 11, the passive slide rail 22 is disposed on the top of the second support 21, the passive slider 23 is slidably disposed on the passive slide rail 22, and the ejector plate 3 is disposed on the side wall of the passive slider 23; in short, the second support 21 serves as a base to support the passive slide rail 22 and the passive slider 23, and is connected to the first support 11 and moves with the first support 11, while the ejector plate 3 moves synchronously under the drive of the second support 21 and moves obliquely under the guidance of the guide 4.

[0034] In some embodiments, the passive slide rail 22 extends out of the second bracket 21 at both ends, and the extended ends of the passive slide rail 22 are provided with limit blocks 24. The limit blocks 24 are adapted to abut against the passive slider 23 to prevent the passive slider 23 from slipping. In short, the passive slide rail 22 extends out of the second bracket 21 at both ends to extend the sliding stroke of the ejector plate 3, and the limit blocks 24 at both ends can prevent the passive slider 23 from falling.

[0035] In some embodiments, the number of passive sliders 23 is not less than two, and the spacing between the passive sliders 23 is equal; in short, the passive sliders 23 are equidistantly arranged on the demolding template 3 so that the demolding template 3 can slide stably to complete the demolding of the product.

[0036] In some embodiments, the demolding template 3 is rectangular, and the demolding notches 32 are evenly distributed on the top of the demolding template 3; and, the demolding notches 32 are provided with air blowing holes 33, and the sidewalls of the demolding template 3 are provided with air inlets 34. The air blowing holes 33 are connected to the air inlets 34 through flow channels, and the air inlets 34 are adapted to be connected to an air source so that the air blowing holes 33 blow air to blow off the product; in short, the even distribution of the demolding notches 32 can ensure that the demolding force of the demolding template 3 on the product is uniform, and the air blowing holes 33 are provided in the demolding notches 32 to blow air after the product is removed from the mandrel 61, so as to ensure that the product will not get stuck in the demolding notches 32, causing interference with subsequent products after resetting.

[0037] In some embodiments, the bottom of the stripping template 3 extends downward with an extension block 31, and the guide notch 31a is formed on the extension block 31 and extends through the bottom of the extension block 31; in short, the bottom lower edge of the stripping template 3 is provided with an extension block 31, and the guide notch 31a is formed on the extension block 31 to avoid interference between the guide 4 and the second bracket 21.

[0038] In some embodiments, a pair of pins 31b are provided in the guide notch 31a, and guide wheels 31c are rotatably provided at the ends of the pins 31b. The guide wheels 31c respectively abut against the sidewalls of the guide member 4. In short, the contact surface between the stripping template 3 and the guide member 4 is the sidewall of the guide wheel 31c, so that the sliding friction between the stripping template 3 and the guide member 4 is changed to rolling friction, ensuring the smooth oblique sliding of the stripping template 3.

[0039] In some embodiments, the active sliding pair 1 includes a pair of hydraulic cylinders 12 and at least one guide rod 13; the hydraulic cylinders 12 are mounted on the machine base 5, the side wall of the first bracket 11 is connected to the piston rod of the hydraulic cylinder 12, one end of the guide rod 13 is fixedly connected to the side wall of the first bracket 11, and the other end is slidably mounted on the machine base 5; in short, the first bracket 11 is slidably mounted on the demolding position 53 of the machine base 5 through the guide rod 13 and is driven by the hydraulic cylinders 12, which is simple and reliable in structure.

[0040] In some embodiments, the guide 4 is strip-shaped, with its end extending to the top of the base 5 and connected to the base 5 by bolts; in short, the guide 4 is strip-shaped, with its front end angled to guide the stripping template 3 to slide obliquely, and its rear end connected to the base 5 by bolts, and the connecting hole at the rear end of the guide 4 is slightly larger than the bolt so that the guide 4 can be finely adjusted in angle.

[0041] Secondly, this disclosure also provides an injection blow molding machine, comprising: a base 5, the top of which is arranged in a circular array with an injection position 51, a blow molding position 52, and a demolding position 53; a rotating joint 54 disposed within the base 5; a lifting joint 55 mounted on the top of the base 5; and a mold frame 6, which is lifted and lowered on the rotating shaft of the rotating joint 54, and the top of the mold frame 6 is connected to the lifting end of the lifting joint 55, so that the mold frame 6 is positioned at the injection position 51, the blow molding position 52, and the demolding position 53. The process reciprocates between positions 3; and the sidewall array of the mold frame 6 is provided with three sets of mandrels 61; the above-mentioned inclined demolding device for injection blow molding machine, wherein the active sliding pair 1 is provided at the demolding position 53; in short, the mold frame 6 rotates after the base 5 rises, and then descends, repeating this process, so that the three sets of mandrels 61 reciprocate in the injection position 51, the blow molding position 52 and the demolding position 53. After the demolding of the product is completed, the second support 21 at the demolding position 53 waits for the mold frame 6 to rise and then resets to complete the next demolding.

[0042] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0044] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0045] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0046] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An inclined demolding device for an injection blow molding machine, characterized in that, include: An active sliding pair (1) has a sliding direction parallel to the mandrel (61), and the sliding end of the active sliding pair (1) is provided with a first bracket (11). A passive sliding pair (2) is provided on the first support (11) and its sliding direction is perpendicular to the mandrel (61). The passive sliding pair (2) is provided on the first support (11) to follow the first support (11) to move closer to or away from the mandrel (61). A demolding template (3) is provided at the sliding end of the passive sliding pair (2). A demolding notch (32) is provided on the demolding template (3). The demolding notch (32) is suitable for holding the product on the mandrel (61). Guide (4), which is parallel to the demolding direction of the product; and, The bottom of the stripping template (3) is provided with a guide notch (31a), and the guide (4) is engaged in the guide notch (31a) so that when the stripping template (3) moves away from the mandrel (61) along with the active sliding pair (1), it moves obliquely under the guidance of the guide (4).

2. The inclined demolding device for an injection blow molding machine as described in claim 1, characterized in that, The passive sliding pair (2) includes a second bracket (21), a passive slide rail (22), and a passive slider (23). The second bracket (21) is located on top of the first bracket (11), the passive slide rail (22) is located on top of the second bracket (21), the passive slider (23) is slidably located on the passive slide rail (22), and the demolding template (3) is located on the side wall of the passive slider (23).

3. The inclined demolding device for an injection blow molding machine as described in claim 2, characterized in that, The passive slide rail (22) has two ends extending out of the second bracket (21). The extended ends of the passive slide rail (22) are provided with limit blocks (24). The limit blocks (24) are adapted to hold the passive slider (23) to prevent the passive slider (23) from slipping.

4. The inclined demolding device for an injection blow molding machine as described in claim 2, characterized in that, The number of passive sliders (23) is not less than two, and the spacing between the passive sliders (23) is equal.

5. The inclined demolding device for an injection blow molding machine as described in claim 1, characterized in that, The demolding template (3) is rectangular, and the demolding notches (32) are evenly distributed on the top of the demolding template (3); and, An air blowing hole (33) is provided in the demolding notch (32), and an air inlet hole (34) is provided on the side wall of the demolding template (3). The air blowing hole (33) is connected to the air inlet hole (34) through a flow channel. The air inlet hole (34) is adapted to be connected to an air source so that the air blowing hole (33) blows air to blow off the product.

6. The inclined demolding device for an injection blow molding machine as described in claim 1, characterized in that, The bottom of the stripper (3) extends downward with an extension block (31), and the guide notch (31a) is opened on the extension block (31) and penetrates the bottom of the extension block (31).

7. The inclined demolding device for an injection blow molding machine as described in claim 6, characterized in that, A pair of pins (31b) are provided in the guide notch (31a), and guide wheels (31c) are rotatably provided at the ends of the pins (31b), and the guide wheels (31c) respectively abut against the side wall of the guide (4).

8. The inclined demolding device for an injection blow molding machine as described in claim 1, characterized in that, The active sliding pair (1) includes a pair of hydraulic cylinders (12) and at least one guide rod (13); The hydraulic cylinder (12) is mounted on the base (5). The side wall of the first bracket (11) is connected to the piston rod of the hydraulic cylinder (12). One end of the light rod (13) is fixedly connected to the side wall of the first bracket (11), and the other end is slidably mounted on the base (5).

9. The inclined demolding device for an injection blow molding machine as described in claim 1, characterized in that, The guide (4) is strip-shaped, with its end extending to the top of the base (5) and connected to the base (5) by bolts.

10. A blow molding machine, characterized in that, include: The machine base (5) has an injection position (51), a blow molding position (52) and a demolding position (53) arranged in a ring array on its top. Rotary joint (54), which is disposed within the base (5); Lifting assembly (55), which is mounted on top of the base (5); A mold frame (6) is provided for lifting on the rotating shaft of the rotating joint (54), and the top of the mold frame (6) is connected to the lifting end of the lifting joint (55) so that the mold frame (6) reciprocates between the injection position (51), the blow molding position (52), and the demolding position (53); and, The sidewall array of the mold frame (6) is provided with three sets of mandrels (61). The inclined demolding device for injection blow molding machine as described in any one of claims 1-9, wherein the active sliding pair (1) is disposed at the demolding position (53).

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