An electric scooter special-shaped bottom plate integrated injection molding device

Abstract

The application discloses a special-shaped bottom plate integrated injection molding device of an electric scooter, which comprises an upper mold mechanism, a lower mold mechanism and the like.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, and in particular to an integrated injection molding device for irregularly shaped base plates of electric scooters. Background Technology

[0002] Scooters are a means of transportation, and to further enhance their mobility, electric scooters have been developed. For example, Chinese patent CN211943637U discloses an electric scooter including a frame, a handlebar, a brake cable, and a rear wheel. The frame and handlebar are hollow structures, and the brake cable is housed within them. A wear-resistant spring is fitted at the bends of the brake cable, and the rear wheel has a braking device. One end of the brake cable is connected to the braking device. Placing the brake cable inside the frame and handlebar effectively prevents it from being worn down by external factors, and the internal design prevents the user from tripping. The wear-resistant spring at the bends of the brake cable prevents internal wear.

[0003] One end of the scooter's frame base is typically bent upwards to connect to the handlebars. When the frame base shell is manufactured using injection molding, it usually consists of a base plate and multiple upper shells mounted on the base plate. To facilitate assembly and improve the overall integrity of the upper shells, irregularly shaped base plates are often manufactured using a one-piece injection molding process.

[0004] When injection molding irregularly shaped scooter base plates, the large rectangular through holes on the flat parts of the base plate, used for later battery pack installation and removal, make the flat parts of the base plate prone to deformation when detached from the mold. Furthermore, the curved, upward-curving ends of the base plate have tubular structures for connecting to the handlebars, resulting in a large contact area between the base plate end and the mold. The curved surfaces on the top and bottom also make ejection difficult, and the ejector pins can easily damage the surface of the base plate. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated injection molding device for irregularly shaped base plates of electric scooters, which effectively removes the irregularly shaped base plates after injection molding, thus avoiding damage to the irregularly shaped base plates during the removal process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an integrated injection molding device for irregularly shaped base plates of electric scooters, comprising:

[0007] The upper mold mechanism includes an upper mold core, a cavity is provided on the upper mold core, and a first insertion seat and a second insertion seat are provided on the bottom surface of the cavity. The first insertion seat is detachably installed on the bottom surface of the cavity, and the second insertion seat is detachably installed on the bottom surface of the cavity.

[0008] The lower mold mechanism includes a lower mold core and an ejector plate. The shape of the lower mold core matches that of the upper mold core. After the lower mold core and the upper mold core are assembled, they form a molding cavity for injection molding a non-circular base plate. The lower mold core is provided with a first molding insert and a second molding insert. The first molding insert is detachably installed on the lower mold core, and the second molding insert is detachably installed on the lower mold core. The first molding insert is provided with a first insertion hole corresponding to the position of the first insertion seat, and the second molding insert is provided with a second insertion hole corresponding to the position of the second insertion seat. A first support plate is provided on one opposite side of the first molding insert. The first support plate is elastically connected to the first molding insert. A first groove for receiving the first support plate is provided on the side wall of the first molding insert. A second support plate is provided on one side of the second molding insert. The second support plate is elastically connected to the second molding insert. A second groove for receiving the second support plate is provided on the second molding insert. The ejector plate is provided with a plurality of ejector pins, which pass through the lower mold core.

[0009] As a further description of the above technical solution:

[0010] The first connector has a cuboid structure, and the shape of the first connector hole matches the first connector.

[0011] As a further description of the above technical solution:

[0012] A first tongue is provided on the side of the first socket, the first tongue is elastically connected to the first socket, and a first guide slope is provided on the lower side of the first tongue.

[0013] As a further description of the above technical solution:

[0014] The first plug-in socket is provided with a first threaded rod at its top, and the first threaded rod is threadedly connected to the bottom surface of the cavity.

[0015] As a further description of the above technical solution:

[0016] The lower mold core is provided with a first mounting groove, and the first molding insert is inserted into the first mounting groove.

[0017] As a further description of the above technical solution:

[0018] The first molded insert includes a top plate and side plates arranged circumferentially along the top plate. A first insertion hole is provided on the top plate, and a first support piece is provided on the side plate.

[0019] As a further description of the above technical solution:

[0020] A first protrusion with a shape matching the bottom opening of the first molded insert is provided on the bottom surface of the first mounting groove.

[0021] As a further description of the above technical solution:

[0022] The upper mold mechanism also includes an upper template and an upper mold base. The upper mold core is embedded in the upper mold base, and the upper template is provided with a glue inlet, which is connected to the cavity.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] 1. In this invention, when the irregularly shaped base plate is demolded after injection molding, the upper mold core drives the first molding insert and the second molding insert on the lower mold core to detach from the lower mold core. The first support piece extending from the side of the first molding insert after detaching from the lower mold core and the second support piece extending from the side of the second molding insert after detaching from the lower mold core assist the ejector pin in separating the irregularly shaped base plate from the lower mold core, effectively improving the demolding effect of the irregularly shaped base plate and avoiding surface damage caused by simply using ejector pins for demolding. Furthermore, the first molding insert and the second molding insert maintain support for the irregularly shaped base plate during the demolding process, preventing deformation of the irregularly shaped base plate.

[0025] 2. In this invention, the first molding insert is a rectangular shell with an opening at the bottom, which facilitates the insertion and fixing of the first molding insert with the lower mold core, and also facilitates the insertion and removal of the first insertion seat by hand from the bottom opening of the first molding insert. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the mold parting process for an integrated injection molding device for an irregularly shaped base plate of an electric scooter.

[0028] Figure 2 This is a schematic diagram of the mold closing process for an integrated injection molding device for an irregularly shaped base plate of an electric scooter.

[0029] Figure 3 This is a preliminary mold parting diagram of an integrated injection molding device for an irregularly shaped base plate of an electric scooter.

[0030] Figure 4 This is a schematic diagram of the material removal process for an integrated injection molding device for an irregularly shaped base plate of an electric scooter.

[0031] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0032] Figure 6 This is a schematic diagram of the first connector in an integrated injection molding device for an irregularly shaped base plate of an electric scooter.

[0033] Figure 7 This is a schematic diagram of the material cutting process for an integrated injection molding device for irregularly shaped base plates of an electric scooter.

[0034] Figure 8 This is a top-view structural diagram of an integrated injection molding device for irregularly shaped base plates of an electric scooter.

[0035] Figure 9 This is a cross-sectional view of an irregularly shaped base plate in an integrated injection molding device for an electric scooter.

[0036] Legend:

[0037] 1. Upper mold mechanism; 11. Upper mold core; 111. Cavity; 12. Upper template; 121. Glue inlet; 13. Upper mold base; 2. Lower mold mechanism; 21. Lower mold core; 211. First mounting groove; 212. First protrusion; 22. Ejector plate; 221. Ejector pin; 3. First insertion seat; 31. First insertion tongue; 311. First guide slope; 32. First threaded rod; 4. Second insertion seat; 5. First molding insert; 51. First insertion hole; 52. First support piece; 53. Top plate; 54. Side plate; 6. Second molding insert; 61. Second support piece; 9. Irregular bottom plate; 91. Rectangular through hole; 92. Tubular structure. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] Please see Figure 1-9 This invention provides a technical solution: an integrated injection molding device for irregularly shaped base plates of electric scooters, comprising:

[0041] The upper mold mechanism 1 includes an upper mold core 11, a cavity 111 is provided on the upper mold core 11, a first insertion seat 3 and a second insertion seat 4 are provided on the bottom surface of the cavity 111, the first insertion seat 3 is detachably installed on the bottom surface of the cavity 111, and the second insertion seat 4 is detachably installed on the bottom surface of the cavity 111.

[0042] The lower mold mechanism 2 includes a lower mold core 21 and an ejector plate 22. The shape of the lower mold core 21 matches that of the upper mold core 11. After the lower mold core 21 and the upper mold core 11 are assembled, they form a molding cavity for injection molding a non-circular base plate 9. The lower mold core 21 is provided with a first molding insert 5 and a second molding insert 6. The first molding insert 5 is detachably installed on the lower mold core 21, and the second molding insert 6 is detachably installed on the lower mold core 21. The first molding insert 5 is provided with a first insertion hole 51 corresponding to the position of the first insertion seat 3, and the second molding insert 6 is provided with a second insertion hole 51 corresponding to the position of the second insertion seat 3. The second insertion hole of the seat 4, the first molded insert 5 is provided with a first support piece 52 on one opposite side, the first support piece 52 is elastically connected to the first molded insert 5, the side wall of the first molded insert 5 is provided with a first groove for receiving the first support piece 52, the second molded insert 6 is provided with a second support piece 61 on one side, the second support piece 61 is elastically connected to the second molded insert 6, the second molded insert 6 is provided with a second groove for receiving the second support piece 61, the ejector plate 22 is provided with a plurality of ejector pins 221, the ejector pins 221 pass through the lower mold core 21.

[0043] When the irregularly shaped base plate 9 is demolded after injection molding, the upper mold core 11 drives the first molding insert 5 and the second molding insert 6 on the lower mold core 21 to detach from the lower mold core 21. The first support piece 52 extending from the side of the first molding insert 5 after detaching from the lower mold core 21 and the second support piece 61 extending from the side of the second molding insert 6 after detaching from the lower mold core 21 assist the ejector pin 221 in separating the irregularly shaped base plate 9 from the lower mold core 21, effectively improving the demolding effect of the irregularly shaped base plate 9 and avoiding surface damage caused by simply using the ejector pin 221 for demolding. Furthermore, the first molding insert 5 and the second molding insert 6 maintain support for the irregularly shaped base plate 9 during the demolding process, preventing deformation of the irregularly shaped base plate 9.

[0044] The first socket 3 has a cuboid structure, and the shape of the first socket 51 matches that of the first socket 3.

[0045] A first tongue 31 is provided on the side of the first insertion seat 3. The first tongue 31 is elastically connected to the first insertion seat 3, and a first guide slope 311 is provided on the lower side of the first tongue 31. When the first insertion seat 3 is inserted into the first molding insert 5, the first guide slope 311 on the lower side of the first tongue 31 contacts the edge of the first insertion hole 51. As the upper mold core 11 moves to the lower mold core 21, the first tongue 31 is squeezed back into the side of the first insertion seat 3 through the first guide slope 311. After the first tongue 31 has completely passed through the first insertion hole 51, the upper mold core 11 and the lower mold core 21 are joined together. The first tongue 31 extends out under the elastic force of the elastic element and abuts against the back of the top plate of the first molding insert 5 around the first insertion hole 51. In this way, when the upper mold core 11 and the lower mold core 21 are separated, the first insertion seat 3 can pull the first molding insert 5 out of the lower mold core 21.

[0046] The structure of the second connector 4 is the same as that of the first connector 3, and the insertion principle between the second connector and the second molded insert 6 is also the same as that between the first connector 3 and the first molded insert 5. The difference is that the dimensions of the first connector 3 and the second connector 4 are different.

[0047] The first connector 3 has a first threaded rod 32 on its top, which is threaded to the bottom surface of the cavity 111, thus enabling the first connector 3 to be detachable. The second connector 4 is installed in the same way.

[0048] The lower mold core 21 is provided with a first mounting groove 211, and the first molding insert 5 is inserted into the first mounting groove 211 to facilitate the first molding insert 5 to be removed from the lower mold core 21.

[0049] The first molding insert 5 includes a top plate 53 and side plates 54 arranged circumferentially along the top plate 53. A first insertion hole 51 is provided on the top plate 53, and a first support piece 52 is provided on the side plate 54. The first molding insert 5 is a cuboid shell with an opening at the bottom, which facilitates the insertion and fixing of the first molding insert 5 with the lower mold core, and also allows the first insertion seat 3 to be disassembled by reaching in from the bottom opening of the first molding insert 5.

[0050] A first protrusion 212, matching the shape of the bottom opening of the first molded insert 5, is provided on the bottom surface of the first mounting groove 211. When the first molded insert 5 is inserted into the first mounting groove 211, the first protrusion 212 effectively positions and supports the first molded insert 5, preventing deformation of the first molded insert 5. The second molded insert 6 has the same installation principle and structure as the first molded insert 5.

[0051] The upper mold mechanism 1 also includes an upper mold plate 12 and an upper mold base 13. The upper mold core 11 is embedded in the upper mold base 13. The upper mold plate 12 is provided with a glue inlet 121, which is connected to the cavity 111. Molten raw material enters the cavity 111 through the glue inlet 121, thereby realizing molding.

[0052] Working principle: During injection molding of the irregularly shaped base plate 9, the upper mold mechanism 1 and the lower mold mechanism 2 close, and the lower mold core 21 and the upper mold core 11 are assembled to form a molding cavity for injection molding the irregularly shaped base plate 9. At this time, the first insertion seat 3 passes through the first insertion hole 51 at the top of the first molding insert 5 and is inserted into the first molding insert 5. At the same time, the second insertion seat 4 is inserted into the second molding insert 6. The first molding insert 5 is used to form the rectangular through hole 91 of the irregularly shaped base plate 9, and the second molding insert 6 is used to form the tubular structure 92 at the end of the irregularly shaped base plate 9.

[0053] When the irregularly shaped base plate 9 is demolded after molding, the upper mold mechanism 1 and the lower mold mechanism 2 first perform preliminary mold separation. At this time, the upper mold core 11 detaches from the lower mold core 21 and the irregularly shaped base plate 9 on the lower mold core 21. The first molding insert 5 and the second molding insert 6 are then pulled upwards. When the preliminary mold separation process ends, the upper mold core 11 completely detaches from the irregularly shaped base plate 9. At this time, the first support piece 52 on the side of the first molding insert 5 has not detached from the mounting groove of the first molding insert 5 on the lower mold core 21. The first support piece 52 is still stored in the first groove on the side of the first molding insert 5, and the second support piece 61 is similarly still stored in the second groove.

[0054] Afterwards, the upper mold mechanism 1 and the lower mold mechanism 2 perform a second mold separation. The upper mold core 11 continues to move away from the lower mold core 21. At the same time, the ejector plate 22, driven by the external drive device, moves the ejector pin 221. The ejector pin 221 pushes the irregular base plate 9 away from the lower mold core 21. After the irregular base plate 9 is pushed away from the lower mold core 21, it can accommodate the gap between the thickness of the first support piece 52 and the thickness of the second support piece 61. At this time, the first molding insert 5, which moves with the upper mold core 11, disengages from the mounting groove on the lower mold core 21. The first support piece 52 extends and abuts against the bottom surface of the irregular base plate 9. Similarly, the second support piece 61 extends and abuts against the bottom surface of the end of the irregular base plate 9. Then, the upper mold core 11 uses the first molding insert 5 and the second molding insert 6 to drive the irregular base plate 9, and together with the ejector pin 221, achieves the separation of the irregular base plate 9 from the lower mold core 21.

[0055] Finally, the first insertion seat 3 and the second insertion seat 4 on the upper mold core 11 are disassembled, so that the first molding insert 5 and the second molding insert 6, together with the irregular base plate 9, are separated from the upper mold core 11. Finally, the first insertion seat 3 and the first molding insert 5, the second insertion seat 4 and the second molding insert 6 are separated, and the irregular base plate 9 is removed.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An integrated injection molding device for irregularly shaped base plates of electric scooters, characterized in that, include: The upper mold mechanism (1) includes an upper mold core (11), on which a cavity (111) is provided. A first insertion seat (3) and a second insertion seat (4) are provided on the bottom surface of the cavity (111). The first insertion seat (3) is detachably installed on the bottom surface of the cavity (111), and the second insertion seat (4) is detachably installed on the bottom surface of the cavity (111). The lower mold mechanism (2) includes a lower mold core (21) and an ejector plate (22). The shape of the lower mold core (21) matches that of the upper mold core (11). After the lower mold core (21) and the upper mold core (11) are assembled, they form a molding cavity for injection molding a non-circular base plate (9). The lower mold core (21) is provided with a first molding insert (5) and a second molding insert (6). The first molding insert (5) is detachably installed on the lower mold core (21), and the second molding insert (6) is detachably installed on the lower mold core (21). The first molding insert (5) is provided with a first insertion hole (51) corresponding to the position of the first insertion seat (3), and the second molding insert (6) is provided with a second insertion hole (51) corresponding to the position of the second insertion seat (3). The second insertion hole of the connector (4), the first molded insert (5) is provided with a first support piece (52) on one opposite side, the first support piece (52) is elastically connected to the first molded insert (5), the first molded insert (5) is provided with a first groove for receiving the first support piece (52) on the side wall, the second molded insert (6) is provided with a second support piece (61) on one side, the second support piece (61) is elastically connected to the second molded insert (6), the second molded insert (6) is provided with a second groove for receiving the second support piece (61), the ejector plate (22) is provided with a plurality of ejector pins (221), the ejector pins (221) are inserted into the lower mold core (21); The first socket (3) is a cuboid structure, and the shape of the first socket (51) matches the first socket (3). The first plug (3) has a first tongue (31) on its side, the first tongue (31) is elastically connected to the first plug (3), and the lower side of the first tongue (31) has a first guide slope (311).

2. The integrated injection molding device for irregularly shaped base plates of electric scooters according to claim 1, characterized in that, The first plug-in seat (3) is provided with a first threaded rod (32) at the top, and the first threaded rod (32) is threadedly connected to the bottom surface of the cavity (111).

3. The integrated injection molding device for irregularly shaped base plates of electric scooters according to claim 1, characterized in that, The lower mold core (21) is provided with a first mounting groove (211), and the first molding insert (5) is inserted into the first mounting groove (211).

4. The integrated injection molding device for irregularly shaped base plates of electric scooters according to claim 3, characterized in that, The first molded insert (5) includes a top plate (53) and a side plate (54) arranged circumferentially along the top plate (53), the first insertion hole (51) is provided on the top plate (53), and the first support piece (52) is provided on the side plate (54).

5. The integrated injection molding device for irregularly shaped base plates of electric scooters according to claim 4, characterized in that, The bottom surface of the first mounting groove (211) is provided with a first protrusion (212) whose shape matches the bottom opening of the first molded insert (5).

6. The integrated injection molding device for irregularly shaped base plates of electric scooters according to claim 1, characterized in that, The upper mold mechanism (1) further includes an upper template (12) and an upper mold base (13). The upper mold core (11) is embedded in the upper mold base (13). The upper template (12) is provided with a glue inlet (121), which is connected to the cavity (111).

Images