Thermoforming processing device for plastic hemispherical film of globe
By introducing the first and second positioning mechanisms into the thermoforming processing device of the globe hemispherical film, the problem of poor positioning effect of plastic planar sheets is solved, and higher molding accuracy and product quality are achieved.
Patent Information
- Application Number
- CN202421996257.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-18
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-18
Smart Images
Figure CN223030344U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a processing device for toys and teaching instruments, and in particular to a thermoforming processing device for a plastic hemisphere film of a globe. Background Art
[0002] A globe is a commonly used tool for imparting geographical knowledge to people and is an essential teaching aid for teaching geography and earth knowledge in primary and secondary schools. In the traditional plastic globe technology, a southern hemisphere is formed by sleeving a hemispherical plastic outer shell with a southern hemisphere map printing layer (hemisphere film), and then a northern hemisphere is formed by sleeving the hemispherical plastic outer shell with a northern hemisphere map printing layer. The southern hemisphere and the northern hemisphere are spliced into a whole globe. Some existing globe hemisphere films are processed by a thermoforming device: a southern hemisphere or a northern hemisphere map is printed on a plastic flat sheet, and then the plastic flat sheet is pushed up by a hot hemispherical member to thermoform a hemisphere film sheet.
[0003] In some existing thermoforming devices for globe hemisphere films, when the hot hemispherical member pushes up for processing, the positioning effect of the plastic flat sheet is poor and it is easy to displace, resulting in the roundness, accuracy, uniformity, etc. of the thermoformed hemisphere film being affected, and the quality of the formed product is not good. Summary of the Utility Model
[0004] To solve at least one of the above problems, the utility model provides a thermoforming processing device for a plastic hemisphere film of a globe, including: a frame, on which an electric heating element and a first driving part are arranged. The upper part of the electric heating element is hemispherical and can be lifted and lowered in the vertical direction. The first driving part is used to drive the electric heating element to lift and lower. A placing table for placing a hemisphere film flat sheet to be processed is arranged on the frame. A hemispherical cover for pressing the edge of the hemisphere film flat sheet and a second driving part for driving the hemispherical cover to lift and lower are arranged on the frame. The hemisphere film flat sheet is placed above the electric heating element. A first positioning mechanism is arranged between the hemisphere film flat sheet and the electric heating element. The first positioning mechanism includes a corresponding first positioning groove and a first positioning post detachably arranged on the hemisphere film flat sheet. The first positioning post protrudes downward from the lower side of the hemisphere film flat sheet, and the first positioning groove is arranged on the electric heating element. When the hemisphere film flat sheet is placed at the processing position on the placing table, the first positioning post falls into the first positioning groove for positioning. The thermoforming processing device for a plastic hemisphere film of the utility model is provided with a first positioning mechanism and a second positioning mechanism, which are convenient for positioning the hemisphere film flat sheet during processing, so that the hemisphere film flat sheet is not easy to shift during the forming process, and the roundness, accuracy and uniformity of the formed hemisphere are good, and the quality of the formed product is good.
[0005] Optionally, the first positioning post is cylindrical, and the axis of the first positioning post is parallel to the horizontal plane.
[0006] Optionally, the first positioning post is disposed at the center position of the hemispherical membrane flat sheet, and the first positioning groove is disposed at the center position above the electrothermal element.
[0007] Optionally, a circular truncated cone is provided on the frame, the placement table is formed on the upper side of the circular truncated cone, an avoidance hole corresponding to the electrothermal element is formed inside the circular truncated cone, the hemispherical membrane flat sheet is in the shape of a square sheet, and the side length of the hemispherical membrane flat sheet is greater than the aperture of the avoidance hole.
[0008] Optionally, a pressing ring corresponding to the circular truncated cone is provided at the edge of the lower part of the hemispherical cover.
[0009] Optionally, a second positioning mechanism is provided between the hemispherical membrane flat sheet and the hemispherical cover. The second positioning mechanism includes a corresponding second positioning groove and a second positioning post detachably disposed on the hemispherical membrane flat sheet. The second positioning post protrudes above the upper side of the hemispherical membrane flat sheet, and the second positioning groove is disposed on the hemispherical cover.
[0010] Optionally, the first positioning post is threadedly connected to the lower side of the second positioning post. A first annular flange is provided on the first positioning post, and a second annular flange is provided on the second positioning post. The hemispherical membrane flat sheet is placed between the first annular flange and the second annular flange for limiting. A threaded post is provided on the first positioning post, and a through hole corresponding to the threaded post is provided on the hemispherical membrane flat sheet, and the threaded post penetrates through the through hole.
[0011] Optionally, the second driving part includes a push rod that moves up and down in the vertical direction. The lower end of the push rod is connected to the upper part of the hemispherical cover. The push rod is a pneumatic push rod or an electric push rod, and the hemispherical membrane flat sheet is made of PVC material.
[0012] Optionally, the first driving part includes a rack-type push rod motor, a lifting plate, and a sliding guide post. The rack-type push rod motor and the sliding guide post are both fixed on the frame. The lifting plate is slidably disposed on the sliding guide post in the vertical direction. The electrothermal element is fixedly disposed on the upper side of the lifting plate. The rack push rod of the rack-type push rod motor is fixedly connected to the lifting plate. A travel switch for restricting the lifting position of the lifting plate is provided on the frame, and a push plate for triggering the travel switch is provided on the lifting plate.
[0013] Optionally, a compression spring is sleeved on the sliding guide post. One end of the compression spring abuts against the lower side of the lifting plate, and the other end of the compression spring abuts against the frame.
[0014] Compared with the prior art, the thermoforming processing device for the plastic hemisphere film of the globe of the present utility model is provided with a first positioning mechanism and a second positioning mechanism, which are convenient for positioning the flat sheet of the hemisphere film during processing, so that the flat sheet of the hemisphere film is not prone to displacement during the forming process, and the formed hemisphere has better roundness, accuracy and uniformity, and the product quality after forming is good; the processing position of the flat sheet of the hemisphere film is accurately placed and convenient to operate, improving the accuracy and forming quality of subsequent processing; a pressing ring corresponding to the circular ring table is arranged at the edge of the lower part of the hemisphere cover, and the flat sheet of the hemisphere film is pressed tightly by the pressing ring and the circular ring table, so that the flat sheet of the hemisphere film is not prone to displacement during processing and forming, and the forming is stable, uniform and of good quality; the flat sheet of the hemisphere film is made of PVC material, and the PVC material is a thermoplastic plastic with good thermoplasticity, which is convenient for thermoforming processing; a compression spring is sleeved on the sliding guide post, and the lifting plate is driven to slide upward by the compression spring to increase the upward forming force of the electric heating element, avoiding the influence on the forming quality due to insufficient upward force, and the use is reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a perspective view of the thermoforming processing device for the plastic hemisphere film of the globe of the present utility model;
[0016] Figure 2 is a sectional view of the thermoforming processing device for the plastic hemisphere film of the globe of the present utility model;
[0017] Figure 3 is Figure 2 an enlarged view of part A in
[0018] Figure 4 is a structural schematic diagram of the placing table part of the thermoforming processing device for the plastic hemisphere film of the globe of the present utility model;
[0019] Figure 5 is a structural schematic diagram of the thermoforming processing device for the plastic hemisphere film of the globe of the present utility model when the first positioning column and the second positioning column are separated;
[0020] The corresponding component names of the reference numerals in the drawings are: 1 is the frame, 101 is the placing table, 102 is the travel switch, 2 is the electric heating element, 21 is the first positioning groove, 3 is the flat sheet of the hemisphere film, 31 is the through hole, 4 is the hemisphere cover, 41 is the pressing ring, 42 is the second positioning groove, 51 is the first positioning column, 511 is the first annular flange, 512 is the threaded column, 52 is the second positioning column, 521 is the second annular flange, 6 is the circular ring table, 61 is the avoidance hole, 71 is the rack-type push rod motor, 711 is the rack push rod, 72 is the lifting plate, 721 is the push plate, 73 is the sliding guide post, 731 is the compression spring, 8 is the push rod, and 9 is the control knob. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0022] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.
[0023] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0024] See also Figures 1 - 5 The embodiment of the utility model provides a thermoforming processing device for a globe plastic hemispherical film, comprising: a frame 1, an electric heating element 2 and a first driving unit are arranged on the frame 1, the upper part of the electric heating element 2 is hemispherical and rises and falls in the vertical direction, the first driving unit is used to drive the electric heating element 2 to rise and fall, a placing table 101 for placing a hemispherical film plane sheet 3 to be processed is arranged on the frame 1, a hemispherical cover 4 for pressing the edge of the hemispherical film plane sheet 3 and a second driving unit for driving the hemispherical cover 4 to rise and fall are arranged on the frame 1, the hemispherical film plane sheet 3 is placed above the electric heating element 2, a first positioning mechanism is arranged between the hemispherical film plane sheet 3 and the electric heating element 2, the first positioning mechanism includes a corresponding first positioning groove 21 and a detachable first positioning groove 21 arranged on the hemispherical film plane sheet 3. The first positioning column 51 on the membrane plane sheet 3 is convex below the lower side of the hemispherical membrane plane sheet 3, and the first positioning groove 21 is set on the electric heating element 2; when the hemispherical membrane plane sheet 3 is placed on the processing position on the placement table 101, the first positioning column 51 falls into the first positioning groove 21 for positioning, and the processing position of the hemispherical membrane plane sheet 3 is accurately placed and easy to operate, which improves the accuracy and molding quality of subsequent processing; the thermoforming processing device of the plastic hemispherical membrane of the globe of the utility model is provided with a first positioning mechanism and a second positioning mechanism, which is convenient for positioning the hemispherical membrane plane sheet during processing, so that the hemispherical membrane plane sheet is not easy to deviate during the molding process, the molded hemisphere has good roundness, accuracy and uniformity, and the product quality after molding is good.
[0025] See also Figure 2 , Figure 3 and Figure 5 The first positioning column 51 is cylindrical, and the axis of the first positioning column 51 is parallel to the horizontal plane, so that the first positioning column 51 can be placed downward into the first positioning groove 21 for positioning, which is easy to operate; the first positioning column 51 is arranged at the center position of the hemispherical membrane plane sheet 3, and the first positioning groove 21 is arranged at the center position of the upper part of the electric heating element 2. The structural design is reasonable. At the beginning of molding, the center part of the electric heating element 2 presses the center part of the hemispherical membrane plane sheet 3, and the molding is uniform.
[0026] Refer to Figures 2 - 4 , a circular truncated cone 6 is provided on the frame 1, a placing table 101 is formed on the upper side of the circular truncated cone 6, and an avoidance hole 61 corresponding to the electric heating element 2 is formed inside the circular truncated cone 6, so that the electric heating element 2 can pass through the avoidance hole 61 to push up the hemispherical film flat sheet 3 for forming; the hemispherical film flat sheet 3 is in the shape of a square sheet, and the side length of the hemispherical film flat sheet 3 is greater than the aperture of the avoidance hole 61, ensuring that a complete hemispherical structure can be formed, and the structural design is reasonable; a pressing ring 41 corresponding to the circular truncated cone 6 is provided at the lower edge of the hemispherical cover 4, and the hemispherical film flat sheet 3 is pressed tightly by the pressing ring 41 and the circular truncated cone 6, so that the hemispherical film flat sheet 3 is not easily displaced during processing and forming, and the forming is stable, uniform and of good quality.
[0027] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , a second positioning mechanism is provided between the hemispherical film flat sheet 3 and the hemispherical cover 4. The second positioning mechanism includes a corresponding second positioning groove 42 and a second positioning post 52 detachably arranged on the hemispherical film flat sheet 3. The second positioning post 52 protrudes above the upper side of the hemispherical film flat sheet 3, and the second positioning groove 42 is arranged at the center position of the hemispherical cover 4. Before processing, the hemispherical film flat sheet 3 is first placed at the processing position, and then the hemispherical cover 4 is driven by the second driving part to descend and press the hemispherical film flat sheet 3. At this time, the electric heating element 2 is driven by the first driving part to push up the hemispherical film flat sheet 3. The hemispherical film flat sheet 3 is heated and deformed into a hemispherical shape. When the electric heating element 2 is pushed up in place, the second positioning post 52 falls into the second positioning groove 42 for positioning, improving the accuracy of forming; the first positioning post 51 is threadedly connected to the lower side of the second positioning post 52, a first annular flange 511 is arranged on the first positioning post 51, and a second annular flange 521 is arranged on the second positioning post 52. The hemispherical film flat sheet 3 is limited between the first annular flange 511 and the second annular flange 521; a threaded post 512 is arranged on the first positioning post 51, and a threaded hole corresponding to the threaded post 512 is arranged on the second positioning post 52; a through hole 31 corresponding to the threaded post 512 is arranged at the center position of the hemispherical film flat sheet 3, and the threaded post 512 penetrates through the through hole 31; during installation, first pass the threaded post 512 of the first positioning post 51 through the through hole 31, and then screw the second positioning post 52 onto the first positioning post 51.
[0028] Refer to Figure 1 and Figure 2 , the second driving part includes a push rod 8 that moves up and down in the vertical direction. The lower end of the push rod 8 is connected to the upper part of the hemispherical cover 4. The push rod 8 is a pneumatic push rod or an electric push rod. The hemispherical film flat sheet 3 is made of PVC material. The PVC material is a thermoplastic plastic and has good thermoplasticity, which is convenient for thermoforming processing.
[0029] Refer to Figure 1 ,Figure 2 and Figure 4 The first driving part includes a rack-type push rod motor 71, a lifting plate 72 and sliding guide posts 73. The rack-type push rod motor 71 and the sliding guide posts 73 are both fixed on the machine frame 1. The lifting plate 72 is slidably arranged on the sliding guide posts 73 in the vertical direction. There are four sliding guide posts 73, so that the lifting plate 72 slides smoothly and the forming is stable during processing. The electric heating element 2 is fixedly arranged on the upper side of the lifting plate 72. The rack push rod 711 of the rack-type push rod motor 71 is fixedly connected with the lifting plate 72. A travel switch 102 for restricting the lifting position of the lifting plate 72 is arranged on the machine frame 1. A push plate 721 for triggering the travel switch 102 is arranged on the lifting plate 72. There are two travel switches 102, corresponding to the upper limit position switch and the lower limit position switch respectively. There are two push plates 721 corresponding to the travel switch 102. When the lifting plate 72 lifts to the limit position, the corresponding push plate 721 triggers the corresponding travel switch 102 to control the rack-type push rod motor 71 to stop rotating. A control knob 9 is arranged on the machine frame 1 to control the operation of each executing component. The control knob 9 can also be set as a button type. A compression spring 731 is sleeved on the sliding guide post 73. One end of the compression spring 731 abuts against the lower side of the lifting plate 72, and the other end of the compression spring 731 abuts against the machine frame 1. The compression spring 731 is used to assist in driving the lifting plate 72 to slide upward, increasing the force for the electric heating element 2 to form by upward pressing, avoiding the influence on the forming quality due to insufficient upward pressing force, and the use is reliable.
[0030] The thermoforming processing device for the plastic hemisphere film of the globe of the present utility model is provided with a first positioning mechanism and a second positioning mechanism, which are convenient for positioning the hemisphere film flat sheet during processing, so that the hemisphere film flat sheet is not easily displaced during the forming process, and the formed hemisphere has better roundness, accuracy and uniformity, and the product quality after forming is good; the processing position of the hemisphere film flat sheet is accurately placed and the operation is convenient, improving the accuracy and forming quality of subsequent processing; a pressing ring corresponding to the circular ring platform is arranged at the edge of the lower part of the hemisphere cover. The hemisphere film flat sheet is pressed tightly by the pressing ring and the circular ring platform, so that the hemisphere film flat sheet is not easily displaced during processing and forming, and the forming is stable, uniform and of good quality; a compression spring is sleeved on the sliding guide post, and the compression spring is used to assist in driving the lifting plate to slide upward, increasing the force for the electric heating element to form by upward pressing, avoiding the influence on the forming quality due to insufficient upward pressing force, and the use is reliable; the hemisphere film flat sheet is made of PVC material, and the PVC material is a thermoplastic plastic with good thermoplasticity, which is convenient for thermoforming processing.
[0031] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present utility model.
Claims
1. A thermoforming processing device for a globe plastic hemispherical film, comprising: A frame (1), characterized in that an electric heating element (2) and a first driving unit are arranged on the frame (1), the upper part of the electric heating element (2) is hemispherical and rises and falls in the vertical direction, the first driving unit is used to drive the electric heating element (2) to rise and fall, the frame (1) is provided with a placement table (101) for placing a hemispherical membrane plane sheet (3) to be processed, the frame (1) is provided with a hemispherical cover (4) for pressing the edge of the hemispherical membrane plane sheet (3) and a second driving unit for driving the hemispherical cover (4) to rise and fall, the hemispherical membrane plane sheet (3) is placed on the electric heating element (2) At the top, a first positioning mechanism is arranged between the hemispherical membrane plane sheet (3) and the electric heating element (2), the first positioning mechanism comprising a corresponding first positioning groove (21) and a first positioning column (51) detachably arranged on the hemispherical membrane plane sheet (3), the first positioning column (51) protruding below the lower side of the hemispherical membrane plane sheet (3), the first positioning groove (21) being arranged on the electric heating element (2); when the hemispherical membrane plane sheet (3) is placed on the processing position on the placement table (101), the first positioning column (51) falls into the first positioning groove (21) for positioning.
2. The thermoforming processing device for the globe plastic hemisphere film according to claim 1, characterized in that: The first positioning column (51) is cylindrical, and the axis of the first positioning column (51) is parallel to a horizontal plane.
3. The thermoforming processing device for the globe plastic hemisphere film according to claim 1, characterized in that: The first positioning column (51) is arranged at the center position of the hemispherical membrane plane sheet (3), and the first positioning groove (21) is arranged at the center position of the upper part of the electric heating element (2).
4. The thermoforming processing device for the globe plastic hemisphere film according to claim 1, characterized in that: The frame (1) is provided with a circular ring platform (6), the placement platform (101) is formed on the upper side of the circular ring platform (6), an avoidance hole (61) corresponding to the electric heating element (2) is formed on the inner side of the circular ring platform (6), the hemispherical membrane plane sheet (3) is in the shape of a square sheet, and the side length of the hemispherical membrane plane sheet (3) is greater than the aperture of the avoidance hole (61).
5. The thermoforming processing device for the globe plastic hemisphere film according to claim 4, characterized in that: A pressure ring (41) corresponding to the circular ring platform (6) is arranged at the edge of the lower part of the hemispherical cover (4).
6. The thermoforming processing device for the globe plastic hemisphere film according to claim 1, characterized in that: A second positioning mechanism is provided between the hemispherical membrane plane sheet (3) and the hemispherical cover (4), the second positioning mechanism comprising a corresponding second positioning groove (42) and a second positioning column (52) detachably provided on the hemispherical membrane plane sheet (3), the second positioning column (52) protruding from the upper side of the hemispherical membrane plane sheet (3), and the second positioning groove (42) provided on the hemispherical cover (4).
7. The thermoforming processing device for the globe plastic hemisphere film according to claim 6, characterized in that: The first positioning column (51) is threadedly connected to the lower side of the second positioning column (52); a first annular flange (511) is provided on the first positioning column (51), and a second annular flange (521) is provided on the second positioning column (52); the hemispherical membrane plane sheet (3) is placed between the first annular flange (511) and the second annular flange (521) for limiting; a threaded column (512) is provided on the first positioning column (51), and a through hole (31) corresponding to the threaded column (512) is provided on the hemispherical membrane plane sheet (3), and the threaded column (512) passes through the through hole (31).
8. The thermoforming processing device for the globe plastic hemisphere film according to claim 1, characterized in that: The second driving part comprises a push rod (8) which rises and falls in a vertical direction, the lower end of the push rod (8) being connected to the upper part of the hemispherical cover (4), the push rod (8) being a pneumatic push rod or an electric push rod, and the hemispherical membrane plane sheet (3) being made of PVC material.
9. The thermoforming processing device for a globe plastic hemispherical film according to any one of claims 1 to 8, characterized in that: The first driving part comprises a rack push rod motor (71), a lifting plate (72) and a sliding guide column (73); the rack push rod motor (71) and the sliding guide column (73) are both fixed on the frame (1); the lifting plate (72) is slidably arranged on the sliding guide column (73) along the vertical direction; the electric heating element (2) is fixedly arranged on the upper side of the lifting plate (72); the rack push rod (711) of the rack push rod motor (71) is fixedly connected to the lifting plate (72); a travel switch (102) for limiting the lifting position of the lifting plate (72) is arranged on the frame (1); and a push plate (721) for triggering the travel switch (102) is arranged on the lifting plate (72).
10. The thermoforming processing device for the globe plastic hemisphere film according to claim 9, characterized in that: A compression spring (731) is mounted on the sliding guide column (73), one end of the compression spring (731) abuts against the lower side of the lifting plate (72), and the other end of the compression spring (731) abuts against the frame (1).