Globe hemispherical film thermal forming processing device with positioning mechanism

Abstract

The utility model relates to processing equipment of toys and teaching instruments, and discloses a globe hemisphere film thermal forming processing device with a positioning mechanism, which comprises a rack, a first driving part, a second driving part, a third driving part and a fourth driving part, a pressing cover corresponding to the upper portion of the electric heating element and a second driving part used for driving the pressing cover to ascend and descend are arranged on the rack, a pressing part is arranged at the bottom of the pressing cover, and after the pressing cover is pressed downwards, the hemispherical film planar sheet is pressed between the pressing part and the placing platform; and a positioning mechanism is arranged between the electric heating element and the hemispherical film planar sheet. According to the semi-spherical film forming device, the positioning mechanism is arranged, so that a semi-spherical film plane sheet is not prone to displacement during machining and forming, the roundness, uniformity and accuracy of a formed semi-spherical film are improved, and the yield is improved; and two hemispherical films can be machined on one hemispherical film planar sheet at the same time, and the machining efficiency is high.

Description

Technical Field

[0001] The utility model relates to a processing device for toys and teaching instruments, and more specifically, to a thermoforming processing device for a globe hemisphere film with a positioning mechanism. 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 shell with a southern hemisphere map printing layer (hemisphere film), and then a northern hemisphere is formed by sleeving a hemispherical plastic shell with a northern hemisphere map printing layer. The southern and northern hemispheres are spliced into a whole globe. Some existing globe hemisphere films are processed by a thermoforming device: a southern or northern hemisphere map is printed on a plastic flat sheet, and then the plastic flat sheet is pushed up by a hot hemisphere member to thermoform a hemisphere film sheet.

[0003] In some existing thermoforming devices for globe hemisphere films, when the hot hemisphere 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; in addition, in some existing thermoforming devices for globe hemisphere films, a single hemisphere film needs to be processed and formed separately, and the processing efficiency is low. 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 globe hemisphere film with a positioning mechanism, including: a frame, an electric heating element and a first driving part for driving the electric heating element to lift are arranged on the frame, a placement platform for placing a flat sheet of the hemisphere film to be processed is arranged on the frame, the upper part of the electric heating element is hemispherical and is placed below the flat sheet of the hemisphere film, a pressing cover corresponding to the upper part of the electric heating element and a second driving part for driving the pressing cover to lift are arranged on the frame, the pressing cover is placed above the placement platform, a pressing part is arranged at the bottom of the pressing cover, after the pressing cover is pressed down, the flat sheet of the hemisphere film is pressed between the pressing part and the placement platform, a positioning mechanism is arranged between the electric heating element and the flat sheet of the hemisphere film, the positioning mechanism includes a positioning column and a jack which is movably inserted with the positioning column, the positioning column is arranged at the upper end of the electric heating element, and the jack is opened on the flat sheet of the hemisphere film; the utility model is provided with a positioning mechanism, when processing and forming, the flat sheet of the hemisphere film is not easy to displace, the roundness, uniformity and accuracy of the formed hemisphere film are improved, and the yield is improved; two hemisphere films can be simultaneously processed from a flat sheet of a hemisphere film, and the processing efficiency is high.

[0005] Optionally, the positioning column is cylindrical and the jack is circular.

[0006] Optionally, a guiding inclined surface facilitating the insertion into the jack is annularly provided on the upper part of the positioning post.

[0007] Optionally, the positioning post is made of heat-insulating and high-temperature-resistant resin, plastic or ceramic material.

[0008] Optionally, a slot corresponding to the positioning post is provided on the pressing cover.

[0009] Optionally, an annular placing ring is provided on the frame, the placing platform is formed on the upper side of the placing ring, an avoidance groove corresponding to the electric heating element is formed inside the placing ring, a pressing ring corresponding to the placing ring is provided on the lower side of the pressing cover, and the pressing part is formed on the lower side of the pressing ring.

[0010] Optionally, the first driving part includes a lifting plate, a guide post and a push rod motor, the electric push rod of the push rod motor is connected to the lower side of the lifting plate, the guide post extends in the vertical direction, and the lifting plate is slidably arranged on the guide post.

[0011] Optionally, a compression spring is sleeved on the guide post, one end of the compression spring abuts against the frame, the other end of the compression spring abuts against the lower side of the lifting plate, a travel switch for limiting 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.

[0012] Optionally, the electric heating element includes a first electric heating element and a second electric heating element, both the first electric heating element and the second electric heating element are arranged on the lifting plate, the pressing cover includes a first pressing cover and a second pressing cover, the first pressing cover corresponds to the first electric heating element, the second pressing cover corresponds to the second electric heating element, the hemispherical membrane flat sheet includes an integrated first hemispherical membrane flat sheet and a second hemispherical membrane flat sheet, the first hemispherical membrane flat sheet is placed between the first pressing cover and the first electric heating element, and the second hemispherical membrane flat sheet is placed between the second pressing cover and the second electric heating element.

[0013] Optionally, the second driving part includes a push rod that lifts in the vertical direction, the lower end of the push rod is connected with a mounting plate, the pressing cover is connected to the lower side of the mounting plate, the push rod is a pneumatic push rod or an electric push rod, and the hemispherical membrane flat sheet is made of PVC material.

[0014] Compared with the prior art, the globe hemisphere film thermoforming processing device with a positioning mechanism of the present utility model has the advantages that during the processing and forming, the flat sheet of the hemisphere film is not prone to displacement, the roundness, uniformity and accuracy of the formed hemisphere film are improved, and the yield rate is increased; two hemisphere films can be simultaneously processed from one flat sheet of the hemisphere film, and the processing efficiency is high; the jack can not only play a positioning role during processing, but also be used as the mounting hole for the rotating shaft of the globe, and the positioning mechanism has a simple structure and a reasonable design; the upper part of the positioning column is annularly provided with a guide inclined surface for facilitating the insertion into the jack, which is convenient for the operator to place the flat sheet of the hemisphere film at the processing position and reduces the operation difficulty; when the pressing cover is pressed down, the electric heating element drives the positioning column to move upward and insert into the slot when it moves upward, avoiding interference between the positioning column and the pressing cover; the guide post extends in the vertical direction, and the lifting plate is slidably arranged on the guide post, so that the lifting of the lifting plate is stable, and further the upward movement of the electric heating element is stable, and the forming is stable during processing; a compression spring is sleeved on the guide post, and the compression spring is used to assist the lifting plate to slide upward, increasing the upward forming force of the electric heating element and 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 globe hemisphere film thermoforming processing device with a positioning mechanism of the present utility model;

[0016] Figure 2 is a schematic structural view of the placement platform of the globe hemisphere film thermoforming processing device with a positioning mechanism of the present utility model;

[0017] Figure 3 is a cross-sectional view of the globe hemisphere film thermoforming processing device with a positioning mechanism of the present utility model;

[0018] Figure 4 is Figure 3 an enlarged view of part A in

[0019] Figure 5 is a schematic structural view of the flat sheet of the hemisphere film of the globe hemisphere film thermoforming processing device with a positioning mechanism of the present utility model;

[0020] The corresponding component names for each reference numeral in the figures are as follows: 1 is the frame, 11 is the support plate, 12 is the driving member, 13 is the sliding guide rod, 14 is the slide bar, 101 is the placement platform, 102 is the travel switch, 2 is the heating element, 21 is the first heating element, 22 is the second heating element, 201 is the positioning post, 202 is the guide inclined plane, 3 is the hemispherical membrane flat sheet, 31 is the first hemispherical membrane flat sheet, 32 is the second hemispherical membrane flat sheet, 301 is the jack, 4 is the pressing cover, 41 is the first pressing cover, 42 is the second pressing cover, 401 is the pressing portion, 402 is the slot, 403 is the pressure ring, 5 is the placement ring, 51 is the avoidance groove, 61 is the lifting plate, 611 is the pushing plate, 62 is the guide post, 621 is the compression spring, 63 is the push rod motor, 631 is the electric push rod, 7 is the push rod, 71 is the mounting plate. Detailed implementation manners

[0021] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following provides a detailed description of specific embodiments of the present utility model with reference to the accompanying drawings.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "upper", "lower", etc. are based on the orientation or positional relationships during the normal use of the product.

[0023] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0024] Refer to Figures 1-5, an embodiment of the present utility model provides a thermoforming processing device for a globe hemisphere film with a positioning mechanism, including: a frame 1, on which an electric heating element 2 and a first driving part for driving the lifting of the electric heating element 2 are arranged; a placing platform 101 for placing a flat sheet 3 of the hemisphere film to be processed is arranged on the frame 1; the upper part of the electric heating element 2 is hemispherical and is placed below the flat sheet 3 of the hemisphere film; a pressing cover 4 corresponding to the upper part of the electric heating element 2 and a second driving part for driving the lifting of the pressing cover 4 are arranged on the frame 1; the pressing cover 4 is placed above the placing platform 101; a pressing part 401 is arranged at the bottom of the pressing cover 4; after the pressing cover 4 is pressed down, the flat sheet 3 of the hemisphere film is pressed between the pressing part 401 and the placing platform 101; a positioning mechanism is arranged between the electric heating element 2 and the flat sheet 3 of the hemisphere film, and the positioning mechanism includes a positioning column 201 and a jack 301 that is movably inserted into the positioning column 201; the positioning column 201 is arranged at the upper end of the electric heating element 2, and the jack 301 is opened on the flat sheet 3 of the hemisphere film. The present utility model is provided with a positioning mechanism. When processing and forming, the flat sheet 3 of the hemisphere film is not prone to displacement, the roundness, uniformity and accuracy of the hemisphere film after forming are improved, and the yield rate is increased; two hemisphere films can be processed from one flat sheet 3 of the hemisphere film at the same time, and the processing efficiency is high; during processing, first place the flat sheet 3 of the hemisphere film to be processed on the placing platform 101, drive the pressing cover 4 to descend through the second driving part to press the flat sheet 3 of the hemisphere film, then drive the electric heating element 2 to jack up the flat sheet 3 of the hemisphere film through the first driving part to make it deform into a hemispherical shape by heating, then reset through the first driving part and the second driving part, take out the formed flat sheet 3 of the hemisphere film, and place a new flat sheet 3 of the hemisphere film to be processed again.

[0025] Refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 , the positioning column 201 is cylindrical, the jack 301 is circular, and the jack 301 can not only play a positioning role during processing, but also be used as an installation hole for the rotating shaft of the globe. The positioning mechanism has a simple structure and reasonable design; a guiding inclined surface 202 for facilitating the insertion into the jack 301 is annularly arranged on the upper part of the positioning column 201, which is convenient for the operator to place the flat sheet 3 of the hemisphere film at the processing position and reduces the operation difficulty; the positioning column 201 is made of heat-insulating and high-temperature-resistant resin, plastic or ceramic material to avoid excessive heat transfer from the electric heating element 2 to the positioning column 201 to cause its temperature rise and avoid the positioning column 201 being too hot to damage the flat sheet 3 of the hemisphere film; a slot 402 corresponding to the positioning column 201 is arranged on the pressing cover 4. When the pressing cover 4 is pressed down and the electric heating element 2 jacks up, the positioning column 201 is driven to move up and insert into the slot 402 to avoid interference between the positioning column 201 and the pressing cover 4.

[0026] Refer to Figures 1-3, a circular placement ring 5 is provided on the frame 1, a placement platform 101 is formed on the upper side of the placement ring 5, and an avoidance groove 51 corresponding to the electric heating element 2 is formed inside the placement ring 5, so that the electric heating element 2 can pass through the avoidance groove 51 and eject upward; a pressure ring 403 corresponding to the placement ring 5 is provided on the lower side of the pressure cover 4, and a pressing portion 401 is formed on the lower side of the pressure ring 403, with good pressing effect, and the hemispherical film flat sheet 3 is not easily displaced during processing.

[0027] Refer to Figures 1-3 , the first driving part includes a lifting plate 61, guide posts 62 and a push rod motor 63. There are four guide posts 62, which are located at the four corner positions of the lifting plate 61, so that the lifting of the lifting plate 61 is stable, and then the upward ejection of the electric heating element 2 is stable, and the molding is stable during processing; the electric push rod 631 of the push rod motor 63 is connected to the lower side of the lifting plate 61, the guide posts 62 extend in the vertical direction, the lifting plate 61 is slidably arranged on the guide posts 62, and the push rod motor 63 is a rack-type push rod motor; a compression spring 621 is sleeved on the guide posts 62, one end of the compression spring 621 abuts against the frame 1, and the other end of the compression spring 621 abuts against the lower side of the lifting plate 61. The compression spring is used to assist the lifting plate to slide upward, increasing the force for the electric heating element to eject and form, avoiding the influence on the forming quality due to insufficient upward ejection force, and the use is reliable; a travel switch 102 for limiting the lifting position of the lifting plate 61 is provided on the frame 1, and a push plate 611 for triggering the travel switch 102 is provided on the lifting plate 61; there are two travel switches, corresponding to the upper limit position switch and the lower limit position switch respectively, and there are two push plates corresponding to the travel switches. When the lifting plate rises and falls to the limit position, the corresponding push plate triggers the corresponding travel switch to control the push rod motor to stop rotating; a switch button for controlling the operation of the push rod motor can be provided on the frame.

[0028] Refer to Figures 1-3, the heating element 2 includes a first heating element 21 and a second heating element 22. Both the first heating element 21 and the second heating element 22 are arranged on the lifting plate 61. The pressing cover 4 includes a first pressing cover 41 and a second pressing cover 42. The first pressing cover 41 corresponds to the first heating element 21, and the second pressing cover 42 corresponds to the second heating element 22. The hemispherical film flat sheet 3 includes an integral first hemispherical film flat sheet 31 and a second hemispherical film flat sheet 32. The first hemispherical film flat sheet 31 is placed between the first pressing cover 41 and the first heating element 21, and the second hemispherical film flat sheet 32 is placed between the second pressing cover 42 and the second heating element 22, capable of simultaneously processing two hemispherical films from one hemispherical film flat sheet, with high processing efficiency. The two hemispherical films processed by this processing device are integrally connected and require subsequent processes such as shearing for separation. The second driving part includes a push rod 7 that moves up and down in the vertical direction. The lower end of the push rod 7 is connected with a mounting plate 71. The pressing cover 4 is connected to the lower side of the mounting plate 71. The push rod 7 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 with good thermoplasticity, facilitating thermoforming processing. The frame 1 is provided with a support plate 11. The upper side of the support plate 11 is used to install a driving member 12 for driving the push rod 7. In this embodiment, the driving member 12 is a cylinder. The frame 1 is provided with a sliding guide rod 13. The mounting plate 71 is slidably mounted on the guide rod 13. The upper side of the mounting plate 71 is connected with a slide rod 14 that slidably penetrates the support plate 11, making the up and down sliding of the mounting plate 71 more stable. When the mounting plate 71 and the pressing cover 4 slide, they are not prone to tilting, ensuring the stability of processing.

[0029] For the globe hemispherical film thermoforming processing device with a positioning mechanism of the present utility model, during processing and forming, the hemispherical film flat sheet is not prone to displacement, improving the roundness, uniformity, and precision of the formed hemispherical film, and increasing the yield rate. It can simultaneously process two hemispherical films from one hemispherical film flat sheet, with high processing efficiency. The jack can not only play a positioning role during processing but also be used as the installation hole for the rotating shaft of the globe. The positioning mechanism has a simple structure and a reasonable design. The upper part of the positioning post is annularly provided with a guiding inclined surface for facilitating the insertion into the jack, making it easy for the operator to place the hemispherical film flat sheet at the processing position and reducing the operation difficulty. When the pressing cover is pressed down, when the heating element moves upward, it drives the positioning post to move upward and insert into the slot, avoiding interference between the positioning post and the pressing cover. The guide post extends in the vertical direction, and the lifting plate is slidably arranged on the guide post, making the lifting of the lifting plate stable, and further making the upward movement of the heating element stable, with stable forming during processing. A compression spring is sleeved on the guide post, and the compression spring is used to assist in driving the lifting plate to slide upward, increasing the force for the heating element to move upward and form, avoiding the influence on the forming quality due to insufficient upward force, and being reliable in use.

[0030] 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 refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A globe hemisphere film thermoforming processing device with a positioning mechanism, characterized in that, Comprising: A frame (1), on which there are arranged a heating element (2) and a first driving part for driving the lifting of the heating element (2). On the frame (1), there is a placing platform (101) for placing the hemispherical film flat sheet (3) to be processed. The upper part of the heating element (2) is hemispherical and is placed below the hemispherical film flat sheet (3). On the frame (1), there is a pressing cover (4) corresponding to the upper part of the heating element (2) and a second driving part for driving the lifting of the pressing cover (4). The pressing cover (4) is placed above the placing platform (101). A pressing part (401) is arranged at the bottom of the pressing cover (4). After the pressing cover (4) is pressed down, the hemispherical film flat sheet (3) is pressed between the pressing part (401) and the placing platform (101). A positioning mechanism is arranged between the heating element (2) and the hemispherical film flat sheet (3). The positioning mechanism includes a positioning column (201) and a jack (301) that is movably inserted into the positioning column (201). The positioning column (201) is arranged at the upper end of the heating element (2), and the jack (301) is formed on the hemispherical film flat sheet (3).

2. The globe hemisphere film thermoforming processing device with a positioning mechanism according to claim 1, characterized in that, The positioning column (201) is cylindrical, and the jack (301) is circular.

3. The globe hemisphere film thermoforming processing device with a positioning mechanism according to claim 2, characterized in that, An inclined guiding surface (202) for facilitating the insertion into the jack (301) is annularly arranged on the upper part of the positioning column (201).

4. The globe hemisphere film thermoforming processing device with a positioning mechanism as described in claim 1, wherein, The positioning column (201) is made of heat-insulating and high-temperature-resistant resin, plastic or ceramic material.

5. The thermoforming processing device for the globe hemisphere film with a positioning mechanism according to claim 1, characterized in that, A slot (402) corresponding to the positioning column (201) is arranged on the pressing cover (4).

6. The thermoforming processing device for the globe hemisphere film with a positioning mechanism as described in claim 1, characterized in that, An annular placing ring (5) is arranged on the frame (1). The placing platform (101) is formed on the upper side of the placing ring (5). An avoidance groove (51) corresponding to the heating element (2) is formed inside the placing ring (5). A pressing ring (403) corresponding to the placing ring (5) is arranged on the lower side of the pressing cover (4). The pressing part (401) is formed on the lower side of the pressing ring (403).

7. The globe hemisphere film thermoforming processing device with a positioning mechanism according to claim 1, characterized in that, The first driving part includes a lifting plate (61), a guide post (62) and a push rod motor (63). The electric push rod (631) of the push rod motor (63) is connected to the lower side of the lifting plate (61). The guide post (62) extends in the vertical direction, and the lifting plate (61) is slidably arranged on the guide post (62).

8. The globe hemisphere film thermoforming processing device with a positioning mechanism according to claim 7, characterized in that, A compression spring (621) is sleeved on the guide post (62). One end of the compression spring (621) abuts against the frame (1), and the other end abuts against the lower side of the lifting plate (61). A travel switch (102) for limiting the lifting position of the lifting plate (61) is arranged on the frame (1). A push plate (611) for triggering the travel switch (102) is arranged on the lifting plate (61).

9. The thermoforming processing device for the globe hemisphere film with a positioning mechanism as described in claim 7, wherein, The electric heating element (2) includes a first electric heating element (21) and a second electric heating element (22). Both the first electric heating element (21) and the second electric heating element (22) are arranged on the lifting plate (61). The pressing cover (4) includes a first pressing cover (41) and a second pressing cover (42). The first pressing cover (41) corresponds to the first electric heating element (21), and the second pressing cover (42) corresponds to the second electric heating element (22). The hemispherical membrane flat sheet (3) includes an integral first hemispherical membrane flat sheet (31) and a second hemispherical membrane flat sheet (32). The first hemispherical membrane flat sheet (31) is placed between the first pressing cover (41) and the first electric heating element (21), and the second hemispherical membrane flat sheet (32) is placed between the second pressing cover (42) and the second electric heating element (22).

10. The thermoforming processing device for the globe hemisphere film with a positioning mechanism according to any one of claims 1-9, characterized in that, The second driving part includes a push rod (7) that moves up and down in the vertical direction. The lower end of the push rod (7) is connected with a mounting plate (71). The pressing cover (4) is connected to the lower side of the mounting plate (71). The push rod (7) is a pneumatic push rod or an electric push rod. The hemispherical membrane flat sheet (3) is made of PVC material.

Images