The blister equipment uses a bubble blowing auxiliary forming tool and a vacuum blister forming equipment

Abstract

The utility model discloses a blister equipment uses bubble -blowing auxiliary forming frock, vacuum suction molding equipment, wherein blister equipment uses bubble -blowing auxiliary forming frock, including support and install the baffle of support top, and support includes a pair of parallelly arranged crossbeam, and baffle both ends are connected on two crossbeams and have certain extension area along the length direction of crossbeam. Vacuum suction molding equipment includes above -mentioned blister equipment uses bubble -blowing auxiliary forming frock, still includes frame, and the middle part of frame is provided with groove, and the die is equipped in the groove, and set up the frock on the frame, and the crossbeam straddles the groove, and the baffle is located above the die. Through set up blister equipment uses bubble -blowing auxiliary forming frock, and the bubble body top will be limited to stop rising when sheet material bubble -blowing, and the bubble body top is more easily attached with the die when suction, can avoid the defect that the top rises and folds in turn because of bubble -blowing too big, can guarantee product thickness even -handed simultaneously, improve the yield, and frock structure is simple, and assembly simple and can use efficiently.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum forming equipment and auxiliary tooling. Specifically, it relates to a blow molding auxiliary tooling for vacuum forming equipment and a vacuum forming equipment. Background Technology

[0002] Vacuum forming is a thermoforming process that uses thermoplastic sheets to manufacture open-shell products. A plastic sheet cut to a specific size is heated and softened. Using the pressure difference between the two sides of the sheet, it is stretched and deformed, then adhered to the contour surface of a specific mold. After cooling and setting, it is demolded, and the edges are trimmed to obtain a finished product. During the sheet heating process, there is a sealed bubble-blowing stage. Bubble blowing involves using negative pressure to evacuate the heated sheet, forming it into a hemispherical shape for better fit with the mold. This stage is commonly referred to as bubble blowing. Bubble blowing is to make the sheet more closely conform to the mold shape for easier forming. If the bubbles are too small, the sheet is not stretched enough, resulting in a product with insufficient wall thickness to meet usage requirements; if the bubbles are too high, the sheet is stretched too much, and the sheet is prone to overlapping and folding during forming, leading to poor product formation.

[0003] In view of this, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a blow-forming auxiliary tooling for a vacuum forming equipment, which can be used to limit the height of the middle part of the sheet during blow-forming, thereby improving the yield of finished products. The tooling has a simple structure, is easy to assemble, and can be used efficiently.

[0005] The second objective of this invention is to provide a vacuum forming equipment.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A vacuum forming equipment uses a bubble-assisted forming fixture, including a support and a baffle mounted on the top of the support, the baffle being arranged horizontally.

[0008] Furthermore, the support includes a pair of parallel crossbeams, with the baffles connected to the two crossbeams at both ends.

[0009] Furthermore, the baffle has a certain extended area along the length of the beam.

[0010] By setting a baffle with a certain extension area at the top of the support, the height of the baffle is limited by the support, and the height of the bubble center is limited by the baffle when the sheet is blown. This avoids excessive stretching of the sheet caused by the bubble center continuously rising without restriction. In addition, the baffle has a certain extension area, which limits the area of ​​the sheet when it is blown.

[0011] Furthermore, the support also includes columns, and crossbeams are connected to the columns and can be adjusted in relative height to the columns.

[0012] Due to differences in molds and sheet sizes, the required bubble-blowing height varies. Therefore, to ensure the baffle is positioned at the desired height conveniently, a beam supporting the baffle is mounted on a column. This beam can move up and down along the column, allowing adjustment of the beam's height and the baffle's height. When a higher bubble height is required, the beam's height on the column is adjusted upwards, raising the baffle. Conversely, when a lower bubble height is required, the beam's height on the column is adjusted downwards, lowering the baffle.

[0013] Furthermore, a ring is provided at the end of the crossbeam, and the crossbeam is fitted onto the column through the ring. Screws are inserted into the radial screw holes of the ring and abut against the column to connect the crossbeam and the column.

[0014] In the specific connection, the crossbeam uses a structure with a ring at one end to sleeve onto the column. After the two are sleeved, the radial movement of the crossbeam along the column is restricted. Radial threaded holes are provided on the rings, and screws are threaded into these holes. One end of the screw extends out of the radial threaded hole and abuts against the outer circumference of the column, thus restricting the axial movement of the crossbeam along the column. This maintains the relative position of the crossbeam on the column, and consequently, keeps the baffle on the crossbeam at a certain height. When it is necessary to adjust the baffle height, loosen the screws, lower or raise the crossbeam to the appropriate height for the baffle, and then tighten the screws.

[0015] Furthermore, the base of the column is provided with waist holes for fixing the column, and the length direction of the waist holes is along the line connecting the two crossbeams.

[0016] Due to processing errors, the relative positions need to be adjusted during assembly. Alternatively, to reduce the overall processing difficulty of the equipment, the relative positions during assembly can be adjusted to meet the requirements. Therefore, waist holes are provided on the base of the column to fix the column. The length direction of the waist holes is along the line connecting the two crossbeams, which is perpendicular to the length direction of the crossbeams. This allows the column to be adjusted and fixed in this direction, thereby allowing the crossbeams and baffles to be adjusted in this direction as well.

[0017] Furthermore, the baffle is fixedly installed on the crossbeam or the two ends of the baffle are connected to the crossbeam by a sliding device.

[0018] Since the purpose of the baffle is to limit the height of the highest point in the middle of the sheet during bubble blowing, the position of the baffle may need to be adjusted when the entire fixture is installed in the vacuum forming equipment in order to effectively and properly limit the height of the highest point of the sheet bubble blowing. In order to make the adjustment more convenient to adapt to the needs of different equipment, the two ends of the baffle are connected to the crossbeam through a sliding device. In this way, the position of the baffle can be adjusted in the length direction of the crossbeam to meet the needs. Combined with the aforementioned adjustment in the direction perpendicular to the length direction of the crossbeam, the position adjustment of the baffle is more flexible and practical.

[0019] Furthermore, the baffle includes a rigid body and a flexible insulation layer attached to the underside of the baffle body.

[0020] Since sheet blowing involves heating and softening the material before blowing bubbles, and the baffle limits the height of the highest point of the bubble, the baffle must contact the bubble being blown. To prevent the baffle from cooling the bubble and causing the sheet to lose plasticity due to temperature drop during molding, resulting in defective products, and to ensure the baffle effectively blocks the highest point of the bubble, the baffle includes a rigid body and a flexible insulation layer attached to the bottom of the baffle body. The flexible insulation layer contacts the bubble to prevent rapid temperature loss, and its soft and high-temperature resistant properties ensure a smooth, undamaged, and cold-mark-free sheet product with long durability. The rigid body, on the other hand, blocks the bubble without deformation, effectively limiting its height.

[0021] This utility model also proposes a vacuum forming equipment, including the aforementioned vacuum forming equipment using bubble-assisted forming fixture, and a frame. A groove is provided in the middle of the frame, and a liftable mold is provided in the groove. The vacuum forming equipment using bubble-assisted forming fixture is provided on the frame. The crossbeam in the support of the vacuum forming equipment using bubble-assisted forming fixture spans the groove, so that the baffle of the fixture is located above the mold. The baffle is at least located in the middle above the mold and can limit the height of the highest point of the sheet after bubble forming.

[0022] Since the sheet is ultimately adhered to the mold for forming, the sheet and the mold are positioned accordingly. Therefore, in order for the baffle to limit the height of the highest point of the sheet after blowing bubbles, the baffle should be set at least in the middle of the upper part of the mold.

[0023] Furthermore, a vacuum forming equipment also includes a detection device to detect the height of the lowest point at the edge of the sheet foam.

[0024] During sheet blowing, a baffle in the tooling is used to limit the height of the highest point area of ​​the sheet bubble. The highest point area refers to the highest point of the bubble and the surrounding area around the highest point.

[0025] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0026] This utility model discloses a blow-forming auxiliary fixture for a vacuum forming equipment. The blow-forming auxiliary fixture includes a support frame and a baffle mounted on top of the support frame, with the baffle arranged horizontally. The support frame includes a pair of parallel crossbeams, and the baffle's two ends are connected to the two crossbeams. The baffle has a certain extension area along the length of the crossbeams. The vacuum forming equipment, including the aforementioned blow-forming auxiliary fixture, also includes a frame. A groove is provided in the middle of the frame, and a liftable mold is placed in the groove. The blow-forming auxiliary fixture is mounted on the frame, and the crossbeams in the support frame of the fixture span the groove, thereby positioning the baffle above the mold. By setting up a vacuum forming equipment and using a bubble-assisted forming fixture, when the sheet material encounters the fixture during bubble blowing, the top of the bubble will stop rising. During adsorption, the top of the bubble is more likely to fit into the mold, which can avoid the defect of excessive bubble blowing leading to top folding. At the same time, it can ensure uniform product thickness, improve yield, and the fixture has a simple structure, is easy to assemble, and can be used efficiently.

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0029] Figure 1 This is a schematic diagram of the bubble-blowing auxiliary forming fixture used in the vacuum forming equipment of this utility model;

[0030] Figure 2 This is a schematic diagram of the vacuum forming equipment of this utility model viewed from the top side;

[0031] Figure 3 This is a side view schematic diagram of the vacuum forming equipment of this utility model;

[0032] In the diagram: 1. Foam forming equipment using a blow molding tool; 2. Column; 3. Beam; 4. Baffle; 5. Mold; 6. Frame.

[0033] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only to facilitate the description of this utility model and simplify 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. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] like Figure 1 As shown, the present invention discloses a vacuum forming equipment using a bubble-assisted forming fixture 1, which includes a bracket and a baffle 4 installed on the top of the bracket, the baffle 4 being arranged horizontally.

[0038] The support includes a pair of parallel crossbeams 3, and the baffles 4 are connected to the two crossbeams 3 at both ends.

[0039] The baffle 4 has a certain extended area along the length of the crossbeam 3.

[0040] By setting a baffle 4 with a certain extension area at the top of the support, the height of the baffle 4 is limited by the support, and the height of the middle part of the bubble is limited by the baffle 4 when the sheet is blown, so as to avoid excessive stretching of the sheet caused by the unrestricted continuous rise of the middle part of the bubble. In addition, the baffle 4 has a certain extension area, so that there is a certain area restriction when the sheet is blown.

[0041] The support also includes a column 2, and a crossbeam 3 connected to the column 2 and adjustable in relative height to the column 2.

[0042] Due to differences in molds and sheet sizes, the required bubble-blowing height varies. Therefore, to ensure the baffle 4 is positioned at the desired height, the crossbeam 3 supporting the baffle 4 is mounted on the column 2. The crossbeam 3 can move up and down along the column 2, allowing adjustment of both the crossbeam 3 and the baffle 4. When the required bubble height is high, the crossbeam 3 is adjusted upwards on the column 2, raising the baffle 4. When the required bubble height is low, the crossbeam 3 is adjusted downwards on the column 2, lowering the baffle 4.

[0043] A ring is provided at the end of the crossbeam 3. The crossbeam 3 is fitted onto the column 2 through the ring. The screw is inserted into the radial screw hole of the ring and abuts against the column 2 to connect the crossbeam 3 and the column 2.

[0044] In the specific connection, the crossbeam 3 uses a structure with a ring at its end to sleeve onto the column 2. After the two are sleeved, the radial movement of the crossbeam 3 along the column 2 is restricted. A radial screw hole is provided on the ring, and the screw is connected to the radial screw hole by a thread. One end of the screw extends out of the radial screw hole and abuts against the outer periphery of the column 2, thus restricting the axial movement of the crossbeam 3 along the column 2. This maintains the relative position of the crossbeam 3 on the column 2, and consequently, keeps the baffle 4 on the crossbeam 3 at a certain height. When it is necessary to adjust the height of the baffle 4, loosen the screw, lower the crossbeam 3 or raise the crossbeam 3 to make the baffle 4 reach the appropriate height, and then tighten the screw.

[0045] The base of column 2 is provided with waist holes for fixing column 2, and the length direction of the waist holes is along the line connecting the two crossbeams 3.

[0046] Due to processing errors, the relative positions need to be adjusted during assembly. Alternatively, to reduce the overall processing difficulty of the equipment, the relative positions during assembly can be adjusted to meet the requirements. A waist hole for fixing the column 2 is provided on the base of the column 2. The length direction of the waist hole is along the line connecting the two crossbeams 3, that is, perpendicular to the length direction of the crossbeam 3. In this way, the column 2 can be adjusted and fixed in this direction, so that the crossbeam 3 and the baffle 4 can be adjusted in this direction.

[0047] The baffle 4 is fixedly installed on the crossbeam 3, or the two ends of the baffle 4 are connected to the crossbeam 3 through a sliding device.

[0048] Since the purpose of baffle 4 is to limit the height of the highest point in the middle when the sheet is blown into bubbles, the position of baffle 4 may need to be adjusted when the entire fixture is installed in the vacuum forming equipment in order to effectively and properly limit the height of the highest point of the sheet blown into bubbles. In order to make it easier to adjust to adapt to the needs of different equipment, both ends of baffle 4 are connected to the crossbeam 3 through sliding devices. In this way, the position of baffle 4 can be adjusted in the length direction of crossbeam 3 to meet the needs. Combined with the aforementioned adjustment in the direction perpendicular to the length direction of crossbeam 3, the position adjustment of baffle 4 is more flexible and practical.

[0049] The baffle 4 includes a rigid body and a flexible insulation layer attached to the bottom of the baffle body.

[0050] Since the sheet material is blown into bubbles after being heated and softened, and the baffle 4 limits the height of the highest point of the blown bubble, the baffle 4 must be in contact with the blown bubble. To prevent the baffle 4 from cooling the bubble and causing the sheet to lose plasticity due to temperature drop during the molding process, resulting in defective products, and to ensure that the baffle 4 effectively blocks the highest point of the blown bubble, the baffle 4 includes a rigid body and a flexible insulation layer attached to the bottom of the baffle body. That is, the flexible insulation layer is set on the side of the baffle 4 that contacts the bubble. The flexible insulation layer blocks the rapid heat loss by contacting the blown bubble, and its soft and high-temperature resistant properties ensure that the sheet product is smooth and undamaged, without cold marks, and has a long service life. The rigid body can block the blown bubble without deformation, effectively limiting its height.

[0051] In this embodiment, the flexible insulation layer is made of wool felt. Wool felt has an insulating effect and, upon contact with the heated and softened ABS or HIPS inner liner, it can prevent rapid heat loss. Wool felt is soft, elastic, and heat-resistant, ensuring the product remains smooth, undamaged, free of cold marks, and durable. The baffle 4 is fixed to the crossbeam 3 with screws, and the edges of the wool felt are turned up and fixed to the upper surface of the baffle 4 to prevent the felt from curling and failing during operation.

[0052] This utility model also proposes a vacuum forming equipment, combined with Figure 1 , 2 As shown in Figure 3, the vacuum forming equipment includes the aforementioned bubble-blowing auxiliary forming fixture 1, a frame 6, and a mold 5. A groove is provided in the middle of the frame, and a liftable mold is placed inside the groove. The vacuum forming equipment bubble-blowing auxiliary forming fixture is mounted on the frame. A crossbeam 3 in the support of the vacuum forming equipment bubble-blowing auxiliary forming fixture spans the groove, thereby positioning the baffle 4 of the fixture above the mold. In this embodiment, as... Figure 2As shown, two molds 5 are installed in the groove in the middle of the frame 6. Correspondingly, two sets of vacuum forming equipment are installed using bubble-blowing auxiliary forming fixtures 1, which are respectively installed on the two sets of molds 5. The equipment also includes a detection device to detect the height of the low point at the edge of the sheet bubble. Since the bubble is a rising hemispherical or near-hemispherical shape when the sheet is blown, the middle position of the bubble is the highest, and the edge position far from the middle is lower, forming the edge low point. However, this edge low point is also higher than the original height of the sheet, and gradually increases in height as the bubble increases. When the low point at the edge of the bubble is detected to have reached the set height, it means that the middle high point of the bubble has definitely reached the height that meets the production requirements, and the sheet blowing has met the production requirements.

[0053] The baffle 4 is located at least in the middle above the mold and can limit the highest point of the sheet after it is blown into bubbles.

[0054] When the sheet is heated and softened at the heating station and then transported to the blowing station for blowing, the mold is lowered to avoid obstructing the transport of the sheet. Since the sheet is eventually adsorbed onto the mold and formed, the sheet and the mold are positioned accordingly. The sheet is located above the mold and below the baffle 4. Therefore, in order to limit the highest point of the sheet after blowing, the baffle 4 is at least located in the middle of the upper part of the mold.

[0055] After the sheet is blown into bubbles, the highest point of the bubble gradually rises and is restricted from rising after touching the baffle 4. Points outside the highest point of the bubble will continue to rise since they are not yet restricted by the baffle 4. The bubbles gradually spread outward from the highest point of the bubble center, thus making the bubble thickness uniform during the blowing process. When the bubble is applied to the mold, the product thickness is uniform, avoiding the defect of the product folding due to excessive stretching area at the top during the application process.

[0056] This utility model of vacuum forming equipment uses a simple bubble-assisted forming fixture structure, which is applicable to all inner-liner vacuum forming equipment and has low requirements for installation space. The fixture structure is stable, low in cost, highly durable, and easy to maintain and repair. After using this fixture, the sheet product forming effect is good, which can solve the problem of excessive bubble blowing, sheet overlap and folding, improve product quality, and also improve work efficiency to a certain extent and reduce the difficulty of adjusting the adsorption process.

[0057] In vacuum forming, the aforementioned vacuum forming equipment is used. During sheet blowing, the height of the highest point of the bubble is limited by the baffle of the tooling. Simultaneously, a detection device detects the height of the lowest point at the edge of the bubble. When the lowest point at the edge of the bubble is detected to have reached the set height, blowing stops, and the next step is performed. This method is simple, feasible, efficient, and effective. The highest point area refers to the highest point of the bubble and the surrounding area.

[0058] This utility model discloses a blow-forming auxiliary fixture for vacuum forming equipment. The blow-forming auxiliary fixture includes a support frame and a baffle mounted on top of the support frame, with the baffle arranged horizontally. The support frame includes a pair of parallel crossbeams, and the baffle's two ends are connected to the two crossbeams. The baffle has a certain extension area along the length of the crossbeams. The vacuum forming equipment, including the aforementioned blow-forming auxiliary fixture, also includes a frame. A groove is provided in the middle of the frame, and a liftable mold is placed in the groove. The blow-forming auxiliary fixture is mounted on the frame, and the crossbeams in the support frame of the fixture span the groove, thus positioning the baffle above the mold. By using the blow-forming auxiliary fixture, when the sheet material encounters the fixture during blow-forming, the top of the bubble stops rising. During lamination, the top of the bubble fits the mold more easily, avoiding defects such as excessively large bubbles leading to folding at the top. It also ensures uniform product thickness and improves the yield rate. Furthermore, the tooling has a simple structure, is easy to assemble, and can be used efficiently.

[0059] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A vacuum forming equipment using a bubble-assisted forming fixture, characterized in that: It includes a bracket and a baffle mounted on top of the bracket, with the baffle positioned horizontally.

2. The vacuum forming equipment according to claim 1 using a bubble-assisted forming fixture, characterized in that: The support includes a pair of parallel crossbeams, with baffles connected to the two crossbeams at both ends.

3. The vacuum forming equipment according to claim 2 using a bubble-assisted forming fixture, characterized in that: The baffle has a certain extended area along the length of the crossbeam.

4. The vacuum forming equipment according to claim 3 using a bubble-assisted forming fixture, characterized in that: The support system also includes uprights, and crossbeams are connected to the uprights and can be adjusted in relative height to the uprights.

5. The vacuum forming equipment according to claim 4 using a bubble-assisted forming fixture, characterized in that: A ring is provided at the end of the crossbeam, and the crossbeam is fitted onto the column through the ring. Screws are inserted into the radial screw holes of the ring and abut against the column to connect the crossbeam and the column.

6. The vacuum forming equipment according to claim 5 using a bubble-assisted forming fixture, characterized in that: The base of the column is provided with waist holes for fixing the column, and the length direction of the waist holes is along the line connecting the two crossbeams.

7. The vacuum forming equipment according to claim 6 using a bubble-assisted forming fixture, characterized in that: The baffle is fixedly installed in the middle of the crossbeam or the two ends of the baffle are connected to the middle of the crossbeam by a sliding device.

8. A vacuum forming equipment using a bubble-assisted forming fixture according to any one of claims 1-7, characterized in that: The baffle includes a rigid body and a flexible insulation layer attached to the bottom of the baffle body.

9. A vacuum forming equipment, characterized in that: The tooling as described in any one of claims 1-8 further includes a frame, a groove provided in the middle of the frame, a liftable mold provided in the groove, the tooling being provided on the frame, a crossbeam of the tooling support spanning the groove, and a baffle of the tooling located above the mold, the baffle being at least located in the middle above the mold.

10. A vacuum forming equipment according to claim 9, characterized in that: It also includes a detection device to detect the height of the lowest point at the edge of the sheet foam.

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