thermoforming mold

Abstract

The application discloses a hot forming die, which comprises a die body, a ejector rod arranged in the die body, a sealing assembly sleeved on the ejector rod and connected with the die body at one end, and a first sealing ring located at a connecting surface of the sealing assembly and the die body and adapted to seal between the sealing assembly and the die body. The hot forming die can improve the sealing effect and avoid water leakage in the hot bath hot forming process.

Description

Technical Field

[0001] This application relates to the field of molds, and in particular to a thermoforming mold. Background Technology

[0002] In related technologies, most thermoforming molds adopt a direct hydraulic cylinder ejection mechanism. The principle is that the hydraulic cylinder directly links with the ejector rod to achieve product ejection and the movement of moving parts. Currently, many car models commonly use hot-bath galvanizing processes. For existing thermoforming hydraulic cylinder ejection devices, the hydraulic cylinder directly links with the ejector rod to complete product ejection. There is a gap between the ejector rod and the mold body, causing liquid to easily leak through these gaps during the hot bath process. This interferes with the normal operation of the hot bath process, making the existing mold structure unable to meet the strict sealing requirements of the hot bath process and difficult to adapt to the hot bath galvanizing process. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this application is to provide a thermoforming mold that can improve the sealing effect and avoid water leakage problems that occur during hot bath thermoforming processes.

[0004] A thermoforming mold according to an embodiment of this application includes: a mold body; an ejector pin that passes through the mold body; a sealing assembly that is sleeved on the ejector pin and one end of the sealing assembly is connected to the mold body; and a first sealing ring that is located at the connection surface between the sealing assembly and the mold body and is adapted to seal between the sealing assembly and the mold body.

[0005] According to the embodiments of this application, the thermoforming mold has a sealing component and a first sealing ring. The sealing component can be sleeved on the ejector rod, and one end of the sealing component can be connected to the mold body. The first sealing ring can be located at the connection surface between the sealing component and the mold body, and the first sealing ring can seal between the sealing component and the mold body. Therefore, during the thermoforming process in the hot bath, liquid leakage from the sealing component and the mold body is prevented, thereby improving the sealing effect and avoiding the problem of water leakage during the hot bath thermoforming process.

[0006] In some embodiments of this application, the sealing assembly includes: a first sealing element connected to the mold body, wherein the first sealing ring is located at the connection surface between the first sealing element and the mold body; and a second sealing element connected to the first sealing element, wherein the second sealing element is clearance-fitted with the push rod.

[0007] In some embodiments of this application, a first mounting groove is formed on the side of the first seal facing the mold body, and a portion of the first sealing ring is received within the first mounting groove.

[0008] In some embodiments of this application, the first sealing member has a flanged portion on the side facing the mold body; the flanged portion has a through-hole first mounting hole, the mold body has a second mounting hole corresponding to the first mounting hole, and the thermoforming mold further includes a first fastener, which is sequentially inserted through the first mounting hole and the second mounting hole.

[0009] In some embodiments of this application, the first sealing member has a first positioning member formed on the side facing the mold body, and the mold body has a second positioning member that cooperates with the first positioning member.

[0010] In some embodiments of this application, the sealing assembly further includes a second sealing ring, which is located at the connection surface between the first seal and the second seal and is adapted to seal between the first seal and the second seal.

[0011] In some embodiments of this application, the second sealing element includes: a first sealing portion, which is sleeved on the top rod and has a clearance fit with the top rod, the first sealing portion being connected to the first sealing element, and a second sealing ring being located at the connection surface between the first sealing portion and the first sealing element; and a second sealing portion, which is connected to the first sealing portion and is sleeved on the top rod and has a clearance fit with the top rod.

[0012] In some embodiments of this application, a second mounting groove is formed on the side of the first sealing portion facing the first sealing member, and a portion of the second sealing ring is received in the second mounting groove.

[0013] In some embodiments of this application, the first sealing portion has a through-hole third mounting hole, the first sealing member has a fourth mounting hole corresponding to the third mounting hole, and the thermoforming mold further includes a second fastener, which is sequentially inserted through the third mounting hole and the fourth mounting hole.

[0014] In some embodiments of this application, a third positioning member is formed on the side of the first sealing portion facing the first sealing member, and a fourth positioning member is formed on the first sealing member to cooperate with the third positioning member.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a thermoforming mold according to an embodiment of this application; Figure 2 yes Figure 1 Schematic diagram of the cross section of AA; Figure 3 yes Figure 1 A schematic diagram of the structure of the first sealing element; Figure 4 yes Figure 1 Schematic diagram of the structure of the second seal and the push rod; Figure 5 This is another structural schematic diagram of a thermoforming mold according to an embodiment of this application; Figure 6 yes Figure 5 A schematic diagram of the cross-section of BB.

[0017] Figure label: 10. Thermoforming molds; 11. Mold body; 12. Ejector pin; 13. Sealing assembly; 131. First seal; 1311. First mounting groove; 1312. Flanged portion; 1313, First mounting hole; 1314, Fourth mounting hole; 132. Second sealing element; 1321. First sealing part; 1322. Second sealing part; 1323, Second mounting groove; 1324, Third mounting hole; 133, Second sealing ring; 14. First sealing ring; 15. Lower mold; 16. Hydraulic cylinder. Detailed Implementation

[0018] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0019] The following is for reference. Figures 1-6 The thermoforming mold 10 according to an embodiment of the present application is described. The thermoforming mold 10 includes a mold body 11, an ejector pin 12, a sealing assembly 13, and a first sealing ring 14.

[0020] The ejector rod 12 passes through the mold body 11. The sealing assembly 13 is sleeved on the ejector rod 12, and one end of the sealing assembly 13 is connected to the mold body 11. The first sealing ring 14 is located at the connection surface between the sealing assembly 13 and the mold body 11 and is adapted to seal between the sealing assembly 13 and the mold body 11.

[0021] Currently, many car models are equipped with hot bath galvanizing. For the existing hot forming cylinder ejection device, the cylinder directly links the ejection rod to complete the product ejection. There is a gap between the ejection rod and the mold body, which makes it easy for liquid to leak from these gaps during the hot bath process, interfering with the normal operation of the hot bath process. This makes the existing mold structure unable to meet the strict sealing requirements of the hot bath process and difficult to adapt to the hot bath galvanizing process.

[0022] In response, this application provides a thermoforming mold 10, which can improve the sealing effect and avoid water leakage during the hot bath thermoforming process.

[0023] Specifically, the thermoforming mold 10 includes a mold body 11, an ejector pin 12, a sealing assembly 13, and a first sealing ring 14. The mold body 11 can be the upper mold, and the ejector pin 12 can pass through the mold body 11. The ejector pin 12 can eject the product. One end of the ejector pin 12 can be poweredly connected to a hydraulic cylinder 16, which can be fixedly connected to the lower mold 15. The hydraulic cylinder 16 has an output rod, one end of which is connected to the inner cavity of the hydraulic cylinder 16, and the other end of which is connected to the ejector pin 12. The output rod can drive the ejector pin 12 to move, thereby realizing the function of the ejector pin 12 ejecting the product. In some embodiments, the ejector pin 12 is made of SKD11, and its hardness meets the material standards.

[0024] Furthermore, the sealing component 13 can be sleeved on the ejector rod 12. Optionally, the sealing component 13 and the ejector rod 12 can be fitted with a clearance. In some embodiments, the clearance tolerance between the sealing component 13 and the ejector rod 12 can be 0.01 mm. The first sealing ring 14 can be located at the connection surface between the sealing component 13 and the mold body 11, and the first sealing ring 14 can seal the sealing component 13 and the mold body 11, thereby ensuring that the thermoforming mold 10 remains sealed during the hot bath thermoforming process, avoiding water leakage, and preventing product performance defects caused by insufficient water volume or low water temperature during the hot bath process, thus ensuring the smooth movement of the ejector rod 12 of the thermoforming mold 10 and the realization of the process.

[0025] In short, the thermoforming mold 10 of this application embodiment has a sealing component 13 and a first sealing ring 14. The sealing component 13 can be sleeved on the push rod 12, and one end of the sealing component 13 can be connected to the mold body 11. The first sealing ring 14 can be located at the connection surface between the sealing component 13 and the mold body 11, and the first sealing ring 14 can seal the sealing component 13 and the mold body 11. Therefore, during the thermoforming process in the hot bath, liquid is prevented from leaking between the sealing component 13 and the mold body 11, thereby improving the sealing effect and avoiding the problem of water leakage during the hot bath thermoforming process.

[0026] like Figure 1 and Figure 2 In some embodiments of this application, the sealing assembly 13 may include a first sealing element 131 and a second sealing element 132. The first sealing element 131 can be connected to the mold body 11. Optionally, the first sealing element 131 and the mold body 11 can be detachably connected by screws or bolts. The first sealing ring 14 can be located at the connection surface between the first sealing element 131 and the mold body 11, thereby sealing the first sealing element 131 and the mold body 11. The first sealing element 131 may also have a cavity structure. During the hot bath thermoforming process, liquid can flow into the cavity through the gap between the ejector rod 12 and the mold body 11. The first sealing ring 14 ensures that the liquid in the cavity does not flow to the outside, improving the sealing effect. The second sealing element 132 can be connected to the first sealing element 131, and the second sealing element 132 can be clearance-fitted with the ejector rod 12. The second sealing element 132 can guide the ejector rod 12.

[0027] like Figure 3 As shown, in some embodiments of this application, a first mounting groove 1311 may be formed on the side of the first sealing member 131 facing the mold body 11. The first mounting groove 1311 may be recessed towards the interior of the first sealing member 131, and a portion of the first sealing ring 14 may be accommodated within the first mounting groove 1311. The first mounting groove 1311 can serve to position the first sealing ring 14, facilitating its installation. Specifically, the first sealing ring 14 may fit against the inner wall of the first mounting groove 1311 and the mold body 11 respectively, thereby achieving the function of sealing between the first sealing member 131 and the mold body 11.

[0028] like Figure 3 , Figure 5 and Figure 6As shown, in some embodiments of this application, the first sealing member 131 may have a flange 1312 on the side facing the mold body 11, and the flange 1312 may have a through first mounting hole 1313. The mold body 11 may have a second mounting hole, and the first mounting hole 1313 and the second mounting hole may be correspondingly arranged. The thermoforming mold 10 may also include a first fastener, which may be sequentially inserted into the first mounting hole 1313 and the second mounting hole to fix the first sealing member 131 to the mold body 11. In some embodiments, there may be multiple first mounting holes 1313, which may be arranged at intervals along the circumference of the first sealing member 131. There may also be multiple second mounting holes, which may be correspondingly arranged with the multiple first mounting holes 1313. There may also be multiple first fasteners, and each first fastener may be threadedly connected to the corresponding first mounting hole 1313 and the second mounting hole. This arrangement can improve the connection strength between the first sealing member 131 and the mold body 11.

[0029] In some embodiments of this application, a first positioning member is formed on the side of the first sealing member 131 facing the mold body 11, and a second positioning member is formed on the mold body 11. The second positioning member can cooperate with the first positioning member. In some embodiments, the first positioning member can be one of a positioning pin and a positioning hole, and the second positioning member can be the other of a positioning pin and a positioning hole. By cooperating with the positioning pin and the positioning hole, the outer wall of the positioning pin fits against the inner wall of the positioning hole, thereby achieving the function of positioning the first sealing member 131 and the mold body 11, which facilitates the subsequent installation of the first sealing member 131 and the mold body 11.

[0030] like Figure 2 and Figure 4 As shown, in some embodiments of this application, the sealing assembly 13 further includes a second sealing ring 133. The second sealing ring 133 may be located at the connection surface between the first sealing member 131 and the second sealing member 132, and the second sealing ring 133 can seal between the first sealing member 131 and the second sealing member 132, thereby ensuring that the sealing assembly 13 remains sealed during the hot bath thermoforming process and avoiding water leakage.

[0031] like Figure 4As shown, in some embodiments of this application, the second sealing element 132 includes a first sealing portion 1321 and a second sealing portion 1322. The first sealing portion 1321 can be sleeved on the push rod 12 and can be clearance-fitted with the push rod 12. The first sealing portion 1321 can be connected to the first sealing element 131, and the second sealing ring 133 can be located at the connection surface between the first sealing portion 1321 and the first sealing element 131. The second sealing portion 1322 can be connected to the first sealing portion 1321 and can be sleeved on the push rod 12. The second sealing portion 1322 can be clearance-fitted with the push rod 12. Optionally, the clearance tolerance between the second sealing portion 1322 and the push rod 12 can be 0.01 mm. In some embodiments, the edges of both the first sealing portion 1321 and the second sealing portion 1322 are chamfered with R6 to avoid interference between the edges and other parts.

[0032] like Figure 4 As shown, in some embodiments of this application, a second mounting groove 1323 is formed on the side of the first sealing portion 1321 facing the first sealing member 131. The second mounting groove 1323 is recessed towards the inside of the first sealing portion 1321, and a portion of the second sealing ring 133 can be accommodated within the second mounting groove 1323. The second mounting groove 1323 can position the second sealing ring 133 to facilitate its installation. Specifically, the second sealing ring 133 can fit against the inner wall of the second mounting groove 1323 and the first sealing member 131 respectively, thereby achieving a seal between the first sealing portion 1321 and the first sealing member 131.

[0033] like Figure 4 As shown, in some embodiments of this application, the first sealing portion 1321 may have a through-hole 1324 formed on the side facing the first sealing member 131, and the first sealing member 131 may have a fourth mounting hole 1314. The fourth mounting hole 1314 may be correspondingly arranged with the third mounting hole 1324. The thermoforming mold 10 may also include a second fastener, which may be sequentially inserted into the third mounting hole 1324 and the fourth mounting hole 1314 to fix the first sealing portion 1321 to the first sealing member 131. In this embodiment, there can be multiple third mounting holes 1324, which can be arranged at intervals along the circumference of the first seal 131. Similarly, there can be multiple fourth mounting holes 1314, which can be corresponding to the multiple third mounting holes 1324. There can also be multiple second fasteners, each of which can be threaded to the corresponding third mounting hole 1324 and fourth mounting hole 1314. This arrangement can improve the connection strength between the first sealing part 1321 and the first seal 131.

[0034] In some embodiments of this application, a third positioning member is formed on the side of the first sealing part 1321 facing the first sealing member 131, and a fourth positioning member is formed on the first sealing member 131. The fourth positioning member can cooperate with the third positioning member. In some embodiments, the third positioning member can be one of a positioning pin and a positioning hole, and the fourth positioning member can be the other of a positioning pin and a positioning hole. By cooperating with the positioning pin and the positioning hole, the outer wall of the positioning pin fits against the inner wall of the positioning hole, thereby achieving the function of positioning the first sealing part 1321 and the first sealing member 131, which facilitates the subsequent installation of the first sealing part 1321 and the first sealing member 131.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0037] In the description of this application, "multiple" means two or more.

[0038] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0039] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermoforming mold, characterized in that, include: Mold body (11); Top rod (12), the top rod (12) is inserted through the mold body (11); A sealing assembly (13) is sleeved on the push rod (12), and one end of the sealing assembly (13) is connected to the mold body (11); A first sealing ring (14) is located at the connection surface between the sealing component (13) and the mold body (11) and is adapted to seal between the sealing component (13) and the mold body (11).

2. The thermoforming mold according to claim 1, characterized in that, The sealing assembly (13) includes: The first sealing element (131) is connected to the mold body (11), and the first sealing ring (14) is located at the connection surface between the first sealing element (131) and the mold body (11). The second seal (132) is connected to the first seal (131) and is clearance-fitted with the top rod (12).

3. The thermoforming mold according to claim 2, characterized in that, The first sealing member (131) has a first mounting groove (1311) recessed into the first sealing member (131) on the side facing the mold body (11), and a portion of the first sealing ring (14) is received in the first mounting groove (1311).

4. The thermoforming mold according to claim 3, characterized in that, The first seal (131) has a flange (1312) on the side facing the mold body (11). The flange (1312) has a through first mounting hole (1313), and the mold body (11) has a second mounting hole corresponding to the first mounting hole (1313). The thermoforming mold also includes a first fastener, which is sequentially inserted into the first mounting hole (1313) and the second mounting hole.

5. The thermoforming mold according to claim 4, characterized in that, The first sealing member (131) has a first positioning member formed on the side facing the mold body (11), and the mold body (11) has a second positioning member that cooperates with the first positioning member.

6. The thermoforming mold according to claim 2, characterized in that, The sealing assembly (13) further includes: The second sealing ring (133) is located at the connection surface of the first sealing member (131) and the second sealing member (132) and is adapted to seal between the first sealing member (131) and the second sealing member (132).

7. The thermoforming mold according to claim 6, characterized in that, The second seal (132) includes: The first sealing part (1321) is sleeved on the top rod (12) and has a clearance fit with the top rod (12). The first sealing part (1321) is connected to the first sealing element (131). The second sealing ring (133) is located at the connection surface between the first sealing part (1321) and the first sealing element (131). The second sealing part (1322) is connected to the first sealing part (1321), and the second sealing part (1322) is sleeved on the top rod (12) and has a clearance fit with the top rod (12).

8. The thermoforming mold according to claim 7, characterized in that, The first sealing portion (1321) has a second mounting groove (1323) recessed towards the inside of the first sealing member (131) on the side facing the first sealing part (1321), and a portion of the second sealing ring (133) is received in the second mounting groove (1323).

9. The thermoforming mold according to claim 7, characterized in that, The first sealing part (1321) has a through-hole (1324), and the first sealing member (131) has a fourth mounting hole (1314) corresponding to the third mounting hole (1324). The thermoforming mold also includes a second fastener, which is sequentially inserted through the third mounting hole (1324) and the fourth mounting hole (1314).

10. The thermoforming mold according to claim 7, characterized in that, The first sealing portion (1321) has a third positioning member formed on the side facing the first sealing member (131), and the first sealing member (131) has a fourth positioning member that cooperates with the third positioning member.

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